WO2022001589A1 - Objectif optique, module de dispositif de prise de vues et dispositif électronique - Google Patents

Objectif optique, module de dispositif de prise de vues et dispositif électronique Download PDF

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Publication number
WO2022001589A1
WO2022001589A1 PCT/CN2021/098725 CN2021098725W WO2022001589A1 WO 2022001589 A1 WO2022001589 A1 WO 2022001589A1 CN 2021098725 W CN2021098725 W CN 2021098725W WO 2022001589 A1 WO2022001589 A1 WO 2022001589A1
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WIPO (PCT)
Prior art keywords
lens
optical lens
optical
object side
image
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PCT/CN2021/098725
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English (en)
Chinese (zh)
Inventor
周勇
贾远林
陈洪福
周少飞
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华为技术有限公司
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Publication of WO2022001589A1 publication Critical patent/WO2022001589A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Definitions

  • the embodiments of the present application relate to the field of lenses, and in particular, to an optical lens, a camera module, and an electronic device.
  • the camera is required to have a small aperture F# value, a large chief ray incident angle, a large field of view and a small total optical length, so that the camera can have good night scene shooting, background blur and other functions, with high resolution Image performance, small length and other characteristics.
  • a camera generally can only meet one of the characteristics of having a small aperture F# value, a large chief ray incident angle, or a small total optical length, and it is difficult for a camera to have a small aperture F# value and a large chief ray incident simultaneously. angle, large field of view and small overall optical length.
  • Embodiments of the present application provide an optical lens, a camera module including the optical lens, and an electronic device including the camera module, aiming to obtain an optical lens capable of simultaneously having a small aperture F# value and a large principal ray incident angle and optical lenses with small optical total length and other performance.
  • an optical lens has five lenses or six lenses.
  • the five lenses are the first lens, the second lens, the third lens, the The fourth lens, the fifth lens;
  • the six lenses are the first lens, the second lens, the third lens, the fourth lens, the A supplemental lens, a fifth lens, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens each include an object side facing the object side and an object side facing the object side Like the side like the side.
  • the first lens has a negative power
  • the second lens has a positive power
  • the third lens has a positive power
  • the fourth lens has a positive power
  • the fifth lens has a negative power
  • the fifth lens is an M-shaped lens, and at least one inflection point exists on at least one of the object side and the image side of the fifth lens.
  • the aperture value F# of the optical lens satisfies: 0.8 ⁇ F# ⁇ 2.8; the relationship between the effective focal length EFFL of the optical lens and the total optical length TTL of the optical lens satisfies: 0.2 ⁇ EFFL/TTL ⁇ 0.9.
  • the first lens is a negative refractive power lens, which can effectively collect and condense the light outside the field of view into the optical system, which is beneficial to realize the design of a large field of view.
  • the second lens is a positive refractive power lens, which is conducive to converging light with a large aperture and a large field of view, reducing the diameter of the lens, and thus facilitating the realization of the design of a large aperture lens.
  • the third lens can correct the residual aberration of the lens and improve the image quality of the lens.
  • the refractive power of the third lens can be positive or negative.
  • the fourth lens is a positive focal power lens, which can bear the main focal power of the lens, which is beneficial to improve the aperture of the lens, which in turn facilitates the realization of a large aperture design.
  • the fifth lens is an M-shaped lens with negative refractive power, and at least one inflection point exists between the object side and the image measuring surface.
  • the M-shaped feature of the fifth lens is beneficial to improve the incident angle of the main light of the lens. It is beneficial to realize the design of large chief ray incident angle.
  • five lenses or six lenses with different structures and different focal powers are arranged in cooperation with each other, so that a small aperture F# value, a large chief ray incident angle and a large field of view can be obtained at the same time.
  • the aperture value F# of the optical lens satisfies: 0.8 ⁇ F# ⁇ 2.8
  • the aperture value F# of the optical lens satisfies: 0.8 ⁇ F# ⁇ 2.8. That is, the aperture value F# of the optical lens of the present application can be small, which can cover the application demand for large aperture in the market, and achieve the purpose of providing a large aperture lens.
  • the number of lenses of the optical lens is five or six, that is, the number of optical lenses in the present application is small, and the optical lens 10 can have a smaller total optical length through the coordination of the structure of the lens and the optical power.
  • the relationship between the effective focal length EFFL of the optical lens and the total optical length TTL of the optical lens satisfies: 0.2 ⁇ EFFL/TTL ⁇ 0.9, the optical lens can achieve a small total optical length, so that the optical lens can have a small
  • the characteristics of miniaturization are better suitable for miniaturized electronic equipment.
  • At least one of the second lens and the fourth lens is a glass lens
  • the other lenses of the optical lens are plastic lenses. Since the cost of plastic lenses is lower than that of glass lenses, in the embodiments of the present application, other lenses are plastic lenses.
  • the way of mixing materials and lenses can greatly reduce the cost of the lens, which is beneficial to realize the low-cost design of the optical lens.
  • the relationship between the refractive index of the glass lens and the temperature change satisfies dn/dT>0, and the refractive index of the plastic lens meets the temperature change relationship with dn/dT ⁇ 0. Therefore, the temperature characteristics of the glass lens and the plastic lens are used.
  • the optical lens can correct the optimal image plane drift (that is, temperature drift) of the optical lens due to environmental changes, so that the optical lens can image clearly in the full temperature range of at least -40°C to +85°C without the need for focusing methods such as motors.
  • at least one of the second lens and the fourth lens is a glass lens. Since the second lens and the fourth lens are both lenses with positive refractive power, the optimal image of the optical lens can be better achieved. Correction for surface drift.
  • Both the object side and the image side of the second lens are convex at the paraxial position, and the object side and the image side of the fourth lens are both convex at the paraxial position.
  • both the object side and the image side of the second lens and/or the fourth lens are convex at the paraxial position, which can make the second lens and/or the fourth lens
  • the value of dn/dT is larger, so that the second lens or the fourth lens can better correct the temperature drift of the optical lens.
  • the object side of the first lens is concave at the paraxial position.
  • the large aperture lens can be effectively diverged into a larger aperture, which is beneficial to the correction of the spherical aberration of the large aperture lens, and thus is conducive to the realization of the design of the large aperture lens.
  • the object side of the third lens is convex at the paraxial position, and the image side of the third lens is concave at the paraxial position.
  • the aberration generated by the third lens itself can be smaller, so that the residual aberration of the optical lens can be corrected better and the optical lens can be improved.
  • the effect of the imaging quality of the lens is convex at the paraxial position, and the image side of the third lens is concave at the paraxial position.
  • the object side surface of the fifth lens can be concave or convex at the paraxial position, and the image side surface is concave at the paraxial position, so as to better achieve the effect of increasing the incident angle of the chief ray of the optical lens.
  • the relationship between the focal length f 4 of the fourth lens and the focal length EFFL of the optical lens satisfies: 0.5 ⁇ f 4 /EFFL ⁇ 2.0.
  • the fourth lens bear the main optical power of the optical lens, when the focal length of the fourth lens and the focal length f 4 EFFL optical lens satisfies the above relation can be more easily implemented in large aperture designs.
  • the relationship between the effective focal length EFFL of the optical lens and the maximum image height IH of the optical lens satisfies: 0.4 ⁇ EFFL/IH ⁇ 2.0.
  • the optical lens when the above-mentioned relationship is satisfied for the optical lens, the optical lens can achieve a larger image height. Because under the same focal length, the larger the image height that the optical lens can obtain, the larger the field of view of the optical lens, and the higher the pixels of the photosensitive element that can be adapted, so that the optical lens can have a large field of view and high pixels. characteristics.
  • the relationship between the effective focal length EFFL, the aperture value F# of the optical lens and the total optical length TTL of the optical lens satisfies: 0.1 ⁇ EFFL/(F# ⁇ TTL) ⁇ 0.5.
  • the optical lens when the above-mentioned relationship is satisfied for the optical lens, the optical lens can have both the characteristics of large aperture and miniaturization.
  • the relationship between the effective focal length EFFL, the total optical length TTL, the maximum image height IH of the optical lens and the aperture number F# of the optical lens satisfies: (IH ⁇ EFFL)/(F# ⁇ TTL2) ⁇ 0.3.
  • the maximum image height IH of the optical lens is relatively large, and the aperture value F# and the total optical length TTL are relatively small. High pixel features.
  • the FOV of the optical lens satisfies 40° ⁇ FOV ⁇ 140°, that is, in the embodiments of the present application, the variation range of the FOV of the optical lens can be larger, so that it can be adjusted according to actual needs. Design an optical lens with any angle of view. In some embodiments of the present application, the maximum field angle of the optical lens can reach 140°, so that the optical lens can have a larger shooting field of view.
  • the Abbe number v2 of the second lens and the Abbe number v3 of the third lens satisfy the relationship:
  • the third lens can more easily achieve the purpose of correcting chromatic aberration, improve the imaging quality of the optical lens, and enhance the resolving power of the optical lens .
  • the Abbe number v4 of the fourth lens and the Abbe number v3 of the third lens satisfy the relationship:
  • the third lens can more easily achieve the purpose of correcting chromatic aberration, further improve the imaging quality of the optical lens, and enhance the resolution of the optical lens force.
  • the supplementary lens has optical power
  • the refractive power of the supplementary lens can be positive or negative, and the object side surface and the image side surface can be convex or concave at the paraxial position.
  • the supplementary lens is arranged between the fourth lens and the fifth lens, which can effectively correct the residual aberration of the system and improve the imaging quality of the optical lens. Furthermore, when the Abbe number of the supplementary lens and the Abbe number v4 of the fourth lens satisfy the above relationship, the purpose of correcting chromatic aberration can be more easily achieved.
  • the present application also provides a camera module, the camera module includes a photosensitive element and the above-mentioned optical lens, the photosensitive element is located on the image side of the optical lens, and the photosensitive element is used to The optical signal transmitted by the optical lens is converted into an electrical signal.
  • the camera module of the present application includes the optical lens and a photosensitive element.
  • the light reflected by the external scene is refracted by the optical lens and then imaged on the photosensitive element, and the photosensitive element converts the optical signal of the image into an electrical signal, thereby capturing an image.
  • the optical lens can simultaneously have a small aperture F# value, a large chief ray incident angle, and a large chief ray incident angle, the camera module can present better imaging in different application scenarios. Effect.
  • the present application provides an electronic device.
  • the electronic device includes an image processor and the camera module, the image processor is connected in communication with the camera module, and the camera module is used to acquire image data and input the image data to the image
  • the image processor is used for processing the image data outputted therein.
  • the image processor may be an image processing chip, or an image processing circuit, or an image processing algorithm code for performing image processing.
  • the electronic device including the camera module can be applied to various application scenarios, so as to improve the imaging quality of electronic devices and have better practical application value.
  • FIG. 1 is a schematic structural diagram of an electronic device according to the present application.
  • FIG. 2 is a schematic diagram of the internal structure of the electronic device according to the embodiment shown in FIG. 1 .
  • FIG. 3 is a schematic structural diagram of a lens module according to an embodiment of the present application.
  • FIG. 4 is a partial structural schematic diagram of the optical lens 10 according to the first embodiment of the present application.
  • FIG. 5 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the first embodiment.
  • FIG. 6 is an incident angle curve of the chief ray of the optical lens according to the first embodiment.
  • FIG. 7a is a temperature drift modulation contrast curve of the optical lens of the first embodiment at room temperature.
  • Fig. 7b is a temperature drift modulation contrast curve of the optical lens of the first embodiment at -30°C.
  • FIG. 7c is a temperature-drift modulation contrast curve of the optical lens of the first embodiment at +70°C.
  • FIG. 8 is a partial structural schematic diagram of the optical lens 10 according to the second embodiment of the present application.
  • FIG. 9 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the second embodiment.
  • FIG. 10 is an incident angle curve of the chief ray of the optical lens according to the second embodiment.
  • FIG. 11a is a temperature-drift modulation contrast curve of the optical lens of the second embodiment at room temperature.
  • Fig. 11b is a temperature-drift modulation contrast curve of the optical lens of the second embodiment at -30°C.
  • FIG. 11c is a temperature-drift modulation contrast curve of the optical lens of the second embodiment at +70°C.
  • FIG. 12 is a partial structural schematic diagram of the optical lens 10 according to the third embodiment of the present application.
  • FIG. 13 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the third embodiment.
  • FIG. 14 is an incident angle curve of the chief ray of the optical lens according to the third embodiment.
  • FIG. 15a is a temperature-drift modulation contrast curve of the optical lens of the third embodiment at room temperature.
  • Fig. 15b is a temperature drift modulation contrast curve of the optical lens of the third embodiment at -30°C.
  • FIG. 15c is a temperature-drift modulation contrast curve of the optical lens of the third embodiment at +70°C.
  • FIG. 16 is a partial structural schematic diagram of the optical lens 10 according to the fourth embodiment of the present application.
  • FIG. 17 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the fourth embodiment.
  • FIG. 18 is an incident angle curve of the chief ray of the optical lens according to the fourth embodiment.
  • FIG. 19a is a temperature drift modulation contrast curve of the optical lens of the fourth embodiment at room temperature.
  • FIG. 19b is a temperature-drift modulation contrast curve of the optical lens of the fourth embodiment at -30°C.
  • FIG. 19c is a temperature-drift modulation contrast curve of the optical lens of the fourth embodiment at +70°C.
  • FIG. 20 is a partial structural schematic diagram of the optical lens 10 according to the fifth embodiment of the present application.
  • 21 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the fifth embodiment.
  • FIG. 22 is an incident angle curve of the chief ray of the optical lens according to the fifth embodiment.
  • FIG. 23a is a temperature drift modulation contrast curve of the optical lens of the fifth embodiment at room temperature.
  • Fig. 23b is a temperature-drift modulation contrast curve of the optical lens of the fifth embodiment at -30°C.
  • FIG. 23c is a temperature-drift modulation contrast curve of the optical lens of the fifth embodiment at +70°C.
  • FIG. 24 is a partial structural schematic diagram of the optical lens 10 according to the sixth embodiment of the present application.
  • FIG. 25 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the sixth embodiment.
  • FIG. 26 is an incident angle curve of the chief ray of the optical lens according to the sixth embodiment.
  • FIG. 27a is a temperature drift modulation contrast curve of the optical lens of the sixth embodiment at room temperature.
  • FIG. 27b is a temperature-drift modulation contrast curve of the optical lens of the sixth embodiment at -30°C.
  • FIG. 27c is a temperature-drift modulation contrast curve of the optical lens of the sixth embodiment at +70°C.
  • FIG. 28 is a partial structural schematic diagram of the optical lens 10 according to the seventh embodiment of the present application.
  • 29 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the seventh embodiment.
  • FIG. 30 is an incident angle curve of the chief ray of the optical lens according to the seventh embodiment.
  • FIG. 31a is a temperature drift modulation contrast curve of the optical lens of the seventh embodiment at room temperature.
  • Fig. 31b is a temperature drift modulation contrast curve of the optical lens of the seventh embodiment at -30°C.
  • FIG. 31c is a temperature-drift modulation contrast curve of the optical lens of the seventh embodiment at +70°C.
  • FIG. 32 is a partial structural schematic diagram of the optical lens 10 according to the eighth embodiment of the present application.
  • 33 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the eighth embodiment.
  • FIG. 34 is an incident angle curve of the chief ray of the optical lens according to the eighth embodiment.
  • FIG. 35a is a temperature drift modulation contrast curve of the optical lens of the eighth embodiment at room temperature.
  • FIG. 35b is a temperature-drift modulation contrast curve of the optical lens of the eighth embodiment at -30°C.
  • FIG. 35c is a temperature-drift modulation contrast curve of the optical lens of the eighth embodiment at +70°C.
  • FIG. 36 is a partial structural schematic diagram of the optical lens 10 according to the ninth embodiment of the present application.
  • FIG. 37 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the ninth embodiment.
  • FIG. 38 is an incident angle curve of the chief ray of the optical lens according to the ninth embodiment.
  • FIG. 39a is a temperature drift modulation contrast curve of the optical lens of the ninth embodiment at room temperature.
  • FIG. 39b is a temperature-drift modulation contrast curve of the optical lens of the ninth embodiment at -30°C.
  • FIG. 39c is a temperature drift modulation contrast curve of the optical lens of the ninth embodiment at +70°C.
  • FIG. 40 is a partial structural schematic diagram of the optical lens 10 according to the tenth embodiment of the present application.
  • FIG. 41 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the tenth embodiment.
  • FIG. 42 is an incident angle curve of the chief ray of the optical lens according to the tenth embodiment.
  • FIG. 43a is a temperature-drift modulation contrast curve of the optical lens of the tenth embodiment at room temperature.
  • Fig. 43b is a temperature-drift modulation contrast curve of the optical lens of the tenth embodiment at -30°C.
  • FIG. 43c is a temperature-drift modulation contrast curve of the optical lens of the tenth embodiment at +70°C.
  • FIG. 44 is a partial structural schematic diagram of the optical lens 10 according to the eleventh embodiment of the present application.
  • FIG. 45 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the eleventh embodiment.
  • FIG. 46 is an incident angle curve of the chief ray of the optical lens according to the eleventh embodiment.
  • FIG. 47a is a temperature-drift modulation contrast curve of the optical lens of the eleventh embodiment at room temperature.
  • FIG. 47b is a temperature-drift modulation contrast curve of the optical lens of the eleventh embodiment at -30°C.
  • FIG. 47c is a temperature-drift modulation contrast curve of the optical lens of the eleventh embodiment at +70°C.
  • FIG. 48 is a partial structural schematic diagram of the optical lens 10 according to the twelfth embodiment of the present application.
  • 49 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the twelfth embodiment.
  • FIG. 50 is an incident angle curve of the chief ray of the optical lens according to the twelfth embodiment.
  • FIG. 51a is a temperature drift modulation contrast curve of the optical lens of the twelfth embodiment at room temperature.
  • Fig. 51b is a temperature-drift modulation contrast curve of the optical lens of the twelfth embodiment at -30°C.
  • Fig. 51c is a temperature drift modulation contrast curve of the optical lens of the twelfth embodiment at +70°C.
  • FIG. 52 is a partial structural schematic diagram of the optical lens 10 according to the thirteenth embodiment of the present application.
  • 53 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the thirteenth embodiment.
  • FIG. 54 is an incident angle curve of the chief ray of the optical lens according to the thirteenth embodiment.
  • FIG. 55a is a temperature drift modulation contrast curve of the optical lens of the thirteenth embodiment at room temperature.
  • FIG. 55b is a temperature-drift modulation contrast curve of the optical lens of the thirteenth embodiment at -30°C.
  • FIG. 55c is a temperature-drift modulation contrast curve of the optical lens of the thirteenth embodiment at +70°C.
  • FIG. 56 is a partial structural schematic diagram of the optical lens 10 according to the fourteenth embodiment of the present application.
  • FIG. 57 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the fourteenth embodiment.
  • FIG. 58 is an incident angle curve of the chief ray of the optical lens according to the fourteenth embodiment.
  • FIG. 59a is a temperature-drift modulation contrast curve of the optical lens of the fourteenth embodiment at room temperature.
  • Fig. 59b is a temperature-drift modulation contrast curve of the optical lens of the fourteenth embodiment at -30°C.
  • FIG. 59c is a temperature-drift modulation contrast curve of the optical lens of the fourteenth embodiment at +70°C.
  • FIG. 60 is a partial structural schematic diagram of the optical lens 10 according to the fifteenth embodiment of the present application.
  • 61 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the fifteenth embodiment.
  • FIG. 62 is an incident angle curve of the chief ray of the optical lens according to the fifteenth embodiment.
  • FIG. 63a is a temperature drift modulation contrast curve of the optical lens of the fifteenth embodiment at room temperature.
  • FIG. 63b is a temperature-drift modulation contrast curve of the optical lens of the fifteenth embodiment at -30°C.
  • FIG. 63c is a temperature-drift modulation contrast curve of the optical lens of the fifteenth embodiment at +70°C.
  • FIG. 64 is a partial structural schematic diagram of the optical lens 10 according to the sixteenth embodiment of the present application.
  • 65 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the sixteenth embodiment.
  • FIG. 66 is an incident angle curve of the chief ray of the optical lens according to the sixteenth embodiment.
  • FIG. 67a is a temperature drift modulation contrast curve of the optical lens of the sixteenth embodiment at room temperature.
  • Fig. 67b is a temperature-drift modulation contrast curve of the optical lens of the sixteenth embodiment at -30°C.
  • FIG. 67c is a temperature-drift modulation contrast curve of the optical lens of the sixteenth embodiment at +70°C.
  • FIG. 68 is a partial structural schematic diagram of the optical lens 10 according to the seventeenth embodiment of the present application.
  • 69 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the seventeenth embodiment.
  • FIG. 70 is an incident angle curve of the chief ray of the optical lens according to the seventeenth embodiment.
  • FIG. 71a is a temperature drift modulation contrast curve of the optical lens of the seventeenth embodiment at room temperature.
  • Fig. 71b is a temperature-drift modulation contrast curve of the optical lens of the seventeenth embodiment at -30°C.
  • Fig. 71c is a temperature drift modulation contrast curve of the optical lens of the seventeenth embodiment at +70°C.
  • FIG. 72 is a partial structural schematic diagram of the optical lens 10 according to the eighteenth embodiment of the present application.
  • 73 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens of the eighteenth embodiment.
  • FIG. 74 is an incident angle curve of the chief ray of the optical lens according to the eighteenth embodiment.
  • FIG. 75a is a temperature drift modulation contrast curve of the optical lens of the eighteenth embodiment at room temperature.
  • Fig. 75b is a temperature-drift modulation contrast curve of the optical lens of the eighteenth embodiment at -30°C.
  • FIG. 75c is a temperature-drift modulation contrast curve of the optical lens of the eighteenth embodiment at +70°C.
  • Focal length is a measure of the concentration or divergence of light in an optical system.
  • the focal length is the distance from the center of the lens to the imaging surface; for thick lenses or lens groups, the focal length is equal to the effective focal length (EFFL), which is the distance from the rear principal plane of the lens or lens group to the imaging surface. distance.
  • EFFL effective focal length
  • Aperture is a device used to control the amount of light that passes through the lens and enters the photosensitive surface of the fuselage. It is usually in the lens.
  • the aperture size is expressed in F/number.
  • Aperture F-number is the relative value (reciprocal of relative aperture) derived from the focal length of the lens/the lens clear diameter. The smaller the aperture F value, the more light will be admitted in the same unit of time. The larger the aperture F value, the smaller the depth of field, and the background content of the photo will be blurred, similar to the effect of a telephoto lens.
  • BFL Back Focal Length
  • Positive refractive power also known as positive refractive power, means that the lens has a positive focal length and has the effect of converging light.
  • Negative power also known as negative power, means that the lens has a negative focal length and has the effect of diverging light.
  • the total track length refers to the total length from the object side of the lens closest to the object side of the optical lens to the imaging surface, which is the main factor forming the height of the camera.
  • Abbe's number that is, dispersion coefficient, is the difference ratio of the refractive index of optical materials at different wavelengths, and represents the degree of dispersion of materials.
  • the size of the field of view determines the field of view of the optical instrument. The larger the field of view, the larger the field of view and the smaller the optical magnification.
  • Chief ray The ray passing through the center of the entrance and exit pupils of the system.
  • CRA Chief Ray Angle
  • Temperature drift the offset between the optimal image plane of the system at a certain temperature and the optimal image plane at room temperature.
  • Modulation Contrast Modulation Transfer Function, MTF: an evaluation of the system imaging quality.
  • the optical axis is a ray of light that passes perpendicularly through the center of an ideal lens.
  • the ideal convex lens should be the point where all the light rays converge at the back of the lens, and the point where all the rays converge is the focal point.
  • light travels along the optical axis its direction of transmission does not change.
  • the object side with the lens as the boundary, the side where the scene to be imaged is the object side.
  • the image side with the lens as the boundary, the side where the image of the scene to be imaged is located is the image side.
  • the surface of the lens close to the object side is called the object side.
  • Image side the surface of the lens close to the image side is called the image side.
  • the side where the subject is located is the object side, and the surface of the lens close to the object side can be called the object side; with the lens as the boundary, the side where the image of the subject is located is the image side, and the lens is close to the image side
  • the surface can be called like a side face.
  • Axial chromatic aberration also known as longitudinal chromatic aberration or positional chromatic aberration or axial aberration
  • positional chromatic aberration or axial chromatic aberration This is because the positions where the lens images the light of each wavelength are different, so that the images of different colors of light cannot be overlapped in the final imaging, and the complex color light is scattered to form dispersion.
  • magnification chromatic aberration also known as magnification chromatic aberration
  • the wavelength causes the magnification of the optical system to change, and the size of the image changes accordingly.
  • Distortion also known as distortion, refers to the degree of distortion of the image formed by the optical system on the object relative to the object itself. Distortion is due to the influence of the spherical aberration of the diaphragm. After the chief rays of different fields of view pass through the optical system, the height of the intersection with the Gaussian image plane is not equal to the ideal image height, and the difference between the two is the distortion. Therefore, the distortion only changes the imaging position of the off-axis object point on the ideal plane, which distorts the shape of the image, but does not affect the sharpness of the image.
  • Optical distortion refers to the degree of deformation calculated by optical theory.
  • the diffraction limit means that an ideal object point is imaged by an optical system. Due to the limitation of diffraction, it is impossible to obtain an ideal image point, but a Fraunhofer diffraction image. Since the aperture of the general optical system is all circular, the Fraunhofer diffraction image is the so-called Airy disk. In this way, the image of each object point is a diffused spot, and it is difficult to distinguish between two diffused spots when they are close together, which limits the resolution of the system. The larger the spot, the lower the resolution.
  • the on-axis thickness of multiple lenses refers to the distance from the intersection of the axis of the optical lens and the object side of the first lens to the intersection of the axis of the optical lens and the image side of the last lens.
  • the present application provides an electronic device, which can be a security surveillance camera, a vehicle-mounted camera, a smart phone, a tablet computer, a laptop computer, a video camera, a video recorder, a camera, or other devices with photographing or videography functions.
  • FIG. 1 is a schematic structural diagram of an electronic device 1000 according to an embodiment of the present application.
  • the electronic device 1000 is a security surveillance camera.
  • the electronic device 1000 is used as an example of a security surveillance camera for description.
  • FIG. 2 is a schematic diagram of the internal structure of the electronic device 1000 according to the embodiment shown in FIG. 1 .
  • the electronic device 1000 includes a lens module 100 and an image processor 200 communicatively connected to the lens module 100 .
  • the lens module 100 is used for acquiring image data and inputting the image data into the image processor 200 so that the image processor 200 can process the image data.
  • the communication connection between the lens module 100 and the image processor 200 may include data transmission through electrical connection such as wiring, or data transmission through coupling or the like. It can be understood that the communication connection between the lens module 100 and the image processor 200 may also be implemented in other ways capable of implementing data transmission.
  • the function of the image processor 200 is to optimize the digital image signal through a series of complex mathematical algorithm operations, and finally transmit the processed signal to the display for display.
  • the image processor 200 may be an image processing chip or a digital signal processing chip (DSP), and may be an image processing current or the like.
  • the electronic device 1000 further includes an analog-to-digital converter (also referred to as an A/D converter) 300 .
  • the analog-to-digital conversion module 300 is connected between the lens module 100 and the image processor 200 .
  • the analog-to-digital conversion module 300 is used to convert the signal generated by the lens module 100 into a digital image signal and transmit it to the image processor 200 , and then the digital image signal is processed by the image processor 200 .
  • the electronic device 1000 further includes a memory 400, the memory 400 is connected in communication with the image processor 200, and the image processor 200 processes the image digital signal and then transmits the image to the memory 400, so that the image needs to be viewed later. At any time, images can be retrieved from storage and displayed on the display. In some embodiments, the image processor 200 further compresses the processed image digital signal and stores it in the memory 400 to save the space of the memory 400 .
  • FIG. 2 is only a schematic diagram of the internal structure of the electronic device 1000 according to an embodiment of the present application, and the positions and structures of the lens module 100 , the image processor 200 , the analog-to-digital conversion module 300 and the memory 400 shown therein are for illustration only.
  • the electronic device 1000 further includes a housing 500, and the lens module 100, the image processor 200, the analog-to-digital conversion module 300, the memory 400 and other structures are accommodated in the housing 500, so that the structure is protected.
  • the housing 500 is provided with an opening 501
  • the lens module 100 is disposed toward the opening 501
  • the light outside the electronic device 1000 is irradiated into the lens module 100 through the opening 501 , that is, the lens module 100 can shoot through the opening 501 outside the electronic device 1000 . scenery.
  • the electronic device 1000 further includes a protective cover 502 .
  • the protective cover plate 502 is a transparent plate.
  • the protective cover plate 502 is fixed on the casing 500 and blocks the opening 501 , so as to prevent external water, dust and other impurities from entering the casing 500 through the opening 501 , thereby protecting each structure accommodated in the casing 500 .
  • the lens module 100 includes an optical lens 10 and a photosensitive element 20 .
  • the photosensitive element 20 is located on the image side of the optical lens 10
  • the photosensitive element 20 is located on the imaging surface of the optical lens 10 .
  • the imaging plane refers to the plane where the image obtained after the scene is imaged by the optical lens 10 is located.
  • the working principle of the lens module 100 is as follows: the light L reflected by the photographed scene generates an optical image through the optical lens 10 and projects it onto the surface of the photosensitive element 20 , and the photosensitive element 20 converts the optical image into an electrical signal, that is, an analog image signal S1 and The converted analog image signal S1 is transmitted to the analog-to-digital conversion module 300 to be converted into a digital image signal S2 by the analog-to-digital conversion module 300 to the image processor 200 .
  • the photosensitive element 20 is a semiconductor chip with hundreds of thousands to millions of photodiodes on its surface. When irradiated by light, charges will be generated and converted into digital signals by the analog-to-digital conversion module 300 chip.
  • the photosensitive element 20 may be a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS).
  • CMOS complementary metal-oxide semiconductor
  • the photosensitive element 20CCD of the charge-coupled device is made of a high-sensitivity semiconductor material, which can convert light into electric charge, and convert it into a digital signal through the analog-to-digital conversion module 300 chip.
  • a CCD consists of many photosensitive units, usually measured in megapixels.
  • CMOS Complementary metal oxide semiconductor
  • N (negatively charged) and P (positively charged) level semiconductors coexist on CMOS.
  • the optical lens 10 affects the imaging quality and imaging effect.
  • the light of the scene forms a clear image on the imaging surface after passing through the optical lens 10 , and records the image of the scene through the photosensitive element 20 located on the imaging surface.
  • the optical lens 10 includes a plurality of lenses arranged from the object side to the image side, and each lens is coaxially arranged. An image with better imaging effect is formed by the cooperation of each lens.
  • the object side refers to the side where the object to be photographed is located, and the image side refers to the side where the imaging plane is located.
  • the optical lens 10 may be a fixed focal length lens or a zoom lens.
  • the fixed focal length lens means that the positions of the lenses in each component are relatively fixed, so as to ensure that the focal length of the optical lens 10 is fixed and unchanged.
  • the zoom lens means that the respective lenses can be relatively moved, and the focal length of the optical lens 10 can be changed by moving the relative positions of different lenses.
  • the lens module 100 further includes a driving member, and the driving member is connected with at least one lens in the optical lens 10, so as to drive the lens to move forward through the driving member, thereby changing the distance between different lenses, Thus, the focal length of the optical lens 10 is changed.
  • the driving member can also drive the lens to move, so as to realize the fixed focus and anti-shake of the optical lens 10 .
  • the driving member may be various driving structures such as a motor, a motor, and a voice coil motor.
  • the optical lens 10 can move axially relative to the photosensitive element 20 , so that the optical lens 10 is close to or away from the photosensitive element 20 .
  • the optical lens 10 is a zoom lens
  • the focal length of the optical lens 10 is changed, the optical lens 10 is moved axially relative to the photosensitive element 20, so that the photosensitive element 20 can always be located on the imaging surface of the optical lens, which can ensure The optical lens 10 can image well at any focal length.
  • the distance between the lenses in the optical lens 10 is moved to change the focal length of the optical lens 10
  • the distance between the lenses in the optical lens 10 and the photosensitive element 20 can also be changed, So that the photosensitive element 20 is located on the imaging surface of the optical lens 10 .
  • the distance between the optical lens 10 and the photosensitive element 20 may not change.
  • FIG. 3 is a schematic structural diagram of a lens module 100 according to an embodiment of the present application.
  • the lens module 100 further includes a fixing base 50 (holder), an infrared filter 30 , a circuit board 60 and other structures.
  • the optical lens 10 further includes a lens barrel 10a, each lens of the optical lens 10 is fixed in the lens barrel 10a, and the lenses fixed in the lens barrel 10a are coaxially arranged.
  • the photosensitive element 20 is fixed on the circuit board 60 by bonding or patching, and the analog-to-digital conversion module 300, the image processor 200, the memory 400, etc. are also fixed on the circuit board 60 by bonding or patching, thereby
  • the communication connection among the photosensitive element 20 , the analog-to-digital conversion module 300 , the image processor 200 , the memory 400 and the like is realized through the circuit board 60 .
  • the fixing base is fixed on the circuit board 60 .
  • the circuit board 60 may be a flexible printed circuit (FPC) or a printed circuit board (PCB) for transmitting electrical signals, wherein the FPC may be a single-sided flexible board, a double-sided flexible board, a multi-layered Flexible board, rigid-flex board or flexible circuit board of mixed structure, etc.
  • FPC flexible printed circuit
  • PCB printed circuit board
  • the infrared filter 30 can be fixed on the circuit board 60 and located between the optical lens 10 and the photosensitive element 20 .
  • the light passing through the optical lens 10 is irradiated on the infrared filter 30 and transmitted to the photosensitive element 20 through the infrared filter 30 .
  • the infrared filter can eliminate unnecessary light projected on the photosensitive element 20 and prevent the photosensitive element 20 from generating false colors or ripples, so as to improve its effective resolution and color reproduction.
  • the infrared filter 30 may also be fixed on the end of the optical lens 10 facing the image side.
  • the infrared filter 30 may be replaced by an electromagnetic/electromechanical filter switch (IR-cut removable, ICR).
  • ICR electromagnetic/electromechanical filter switch
  • the ICR is located between the photosensitive element 20 and the lens 11 of the lens 10 .
  • the ICR will automatically install an infrared filter between the photosensitive element and the lens 11 of the optical lens.
  • the light refracted by each lens 11 of the lens 10 is irradiated on the infrared filter 30 and transmitted to the photosensitive element 20 through the infrared filter 30 .
  • the infrared filter 30 can filter out unnecessary light projected on the photosensitive element 20 to prevent the photosensitive element 20 from producing false color or ripples, so as to improve its effective resolution and color reproduction, so that the lens can be monitored in color mode.
  • the ICR can automatically remove the infrared filter, so that the lens can be automatically converted to black and white mode for monitoring, so as to ensure that the optical lens can be used in any illumination scene. Work.
  • the lens 10 further includes a diaphragm 12, and the diaphragm 12 may be disposed on the object side of the multiple lenses, or located between the lenses 11 near the object side among the multiple lenses.
  • the diaphragm 12 may be an aperture diaphragm 12, and the aperture diaphragm 12 is used to limit the amount of incoming light, so as to change the brightness of imaging.
  • the fixed base 50 is fixed on the circuit board 60
  • the optical lens 10 , the infrared filter 30 and the photosensitive element 20 are all accommodated in the fixed base 50
  • the lens 10 is sequentially stacked on the circuit board 60 , so that the light passing through the optical lens 10 can be irradiated on the infrared filter 30 and transmitted to the photosensitive element 20 through the infrared filter 30 .
  • the lens barrel 10 a of the optical lens 10 is connected to the fixed base 50 and can move relative to the fixed base 50 , thereby changing the distance between the optical lens 10 and the photosensitive element 20 .
  • the fixing base 50 includes a fixing barrel 51 , the inner wall of the fixing barrel 51 is provided with internal threads, the outer wall of the lens barrel 10 a is provided with external threads, and the lens barrel 10 a is threadedly connected with the fixing barrel 51 .
  • the lens barrel 10a is connected with a driving member for driving the lens barrel 10a to rotate, so that the lens barrel 10a moves relative to the fixed barrel 51 in the axial direction, so that the lens of the optical lens 10 is close to or away from the photosensitive element 20 .
  • the lens barrel 10a can also be connected to the fixed base 50 in other ways, and can move relative to the fixed base 50 .
  • each lens of the optical lens 10 is disposed in the lens barrel 10a, and can move relative to the lens barrel 10a, so that different lenses can be moved relative to each other, thereby performing focus adjustment.
  • the optical lens 10 may be a five-piece lens with five lenses or a six-piece lens with six lenses.
  • the optical lens 10 is a five-piece lens, and the five lenses included are a first lens 11 , a second lens 12 , and a third lens arranged in sequence from the object side to the image side. 13.
  • the first mirror 11 , the second mirror 12 , the third mirror 13 , the fourth mirror 14 and the fifth mirror 15 are all arranged coaxially, that is, the alignment directions of the mirrors are the same.
  • FIG. 28 is a schematic diagram showing a partial structure of the optical lens 10 according to the seventh embodiment of the present application. In the embodiment shown in FIG.
  • the optical lens 10 is a six-piece lens with six lenses, and the five lenses included are the first lens 11 , the second lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , the first lens 12 , and The third lens 13 , the fourth lens 14 , the supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 , the second lens 12 , the third lens 13 , the fourth lens 14 , the supplementary lens 16 and the fifth lens 15 are all coaxially arranged, that is, the arrangement direction of each lens is the same.
  • each lens in the present application is a lens with positive refractive power or negative bending power
  • the plane mirror when a plane mirror is inserted between the lenses, the plane mirror is not regarded as a lens of the optical lens 10 of the present application.
  • the plane mirror when a plane mirror is inserted between the first lens 11 and the second lens 12, the plane mirror cannot be counted as the second lens of the optical lens 10 of the present application.
  • the first lens 11 has a negative refractive power, which can effectively collect and condense the light outside the field of view into the optical system, which is beneficial to realize the design of a large field of view.
  • the optical lens 10 is applied to electronic structures such as monitoring equipment. Compared with the application of the optical lens 10 to structures such as mobile phones, the size of the diameter of the incident light hole of the optical lens is more limited. Therefore, the first lens 11 can be set as a negative power lens, which can more effectively collect and converge the light outside the field of view into the optical lens compared with the optical lens where the first lens is set as a positive power lens. in the system.
  • the large aperture lens can be effectively diverged into a larger aperture, which is conducive to the correction of spherical aberration of the large aperture lens, and is further conducive to realizing the large aperture of the optical lens 10. design. It can be understood that, in some embodiments of the present application, the object side of the first lens 11 at the paraxial position may also be a convex surface.
  • the second lens 12 has a positive refractive power, which is conducive to converging light with a large aperture and a large field of view, reducing the diameter of the lens, and further facilitating the realization of the large aperture design of the optical lens 10 .
  • both the object side and the image side of the second lens 12 are convex at the paraxial position. It can be understood that, in some embodiments, the object side surface and the image side surface of the second lens 12 may have only one surface that is convex, and the other surface that is concave or flat.
  • the third lens 13 has a refractive power, which can effectively correct the residual aberration of the optical lens 10 and improve the imaging quality of the optical lens 10 , wherein the refractive power of the third lens 13 can be positive or negative.
  • the object measuring surface of the third lens 13 is convex at the paraxial position, and the image side surface of the third lens 13 is concave at the paraxial position, so that the aberration generated by the third lens 13 itself can be small, so that it can be It plays the role of better correcting the residual aberration of the optical lens 10 and improving the imaging quality of the optical lens 10 .
  • the fourth lens 14 has a positive refractive power and can assume the main refractive power of the optical lens 10 , which is beneficial to improve the aperture of the optical lens 10 , and is further beneficial to realize the large aperture design of the optical lens 10 .
  • both the object side and the image side of the second lens 12 are convex at the paraxial position. It can be understood that, in some embodiments, the object side surface and the image side surface of the second lens 12 may have only one surface that is convex, and the other surface that is concave or flat.
  • the fifth lens 15 has a negative refractive power
  • the fifth lens 15 is an M-shaped lens, that is, the cross-section of the fifth lens 15 after being cut by a plane passing through the optical axis is M-shaped.
  • at least one inflection point exists on at least one of the object side surface and the image side surface of the fifth lens 15
  • the M-shaped feature of the fifth lens 15 is beneficial to improve the incident angle of the lens’s chief ray, which in turn is conducive to the realization of a large principal ray. Light incident angle design.
  • the object side of the fifth lens 15 can be concave or convex at the paraxial position, and the image side surface is concave at the paraxial position, which can better improve the incident angle of the chief ray of the optical lens. It can be understood that, in some embodiments or possible, the image side surface of the fifth lens 15 may also be a convex surface.
  • the optical power of the supplementary lens 16 can be positive or negative, and both the object side and the image side can be convex or concave at the paraxial position.
  • the supplementary lens 16 is arranged between the fourth lens 14 and the fifth lens 15, which can effectively correct the residual aberration of the system and improve the imaging quality of the optical lens 10. That is, in the present application, compared to the optical lens 10 with five lenses, the optical lens 10 with six lenses has one more light-filling lens 16, and the light-filling lens 16 can reduce the residual aberration of the optical lens 10, thereby reducing the residual aberration of the optical lens 10. Better image quality can be achieved.
  • the optical lens 10 having the performances such as a small aperture F# value, a large chief ray incident angle, and a large field angle can be obtained by cooperating with each other by setting lenses of different structures and different focal powers. So that the optical lens 10 can meet various usage scenarios and various usage requirements. For example, because the optical lens 10 has a smaller aperture F# value (ie, has a large aperture or an ultra-large aperture), the optical lens 10 can receive more light energy, so that the optical lens 10 can also image clearly in a low illumination environment. Since the optical lens 10 has a large incident angle of chief ray, the optical lens 10 of the present application can match a photosensitive element with a large incident angle of chief ray.
  • the optical lens 10 Since the optical lens 10 has a large field of view, a wider range of scenes can be photographed.
  • the electronic device is a monitoring device
  • the lens module included in the electronic device can have the characteristics of large aperture, high resolution and large field of view
  • the monitoring device can monitor a larger field of view and reduce the monitoring dead angle.
  • clear shooting can be performed in the case of low illumination, and operations such as large-magnification magnification can be performed on the imaging, so as to better meet the needs of actual use.
  • the number of lenses of the optical lens 10 is five or six, that is, the number of the optical lenses of the present application is small, and through the coordination of the structure and the optical power of the optical lens 10, it is possible to make The optical lens 10 has a small overall optical length.
  • each lens of the optical lens 10 may be made of plastic material, glass material or other composite materials.
  • the plastic material can easily produce various optical lens structures with complex shapes.
  • the refractive index n1 of the glass material lens satisfies: 1.50 ⁇ n1 ⁇ 1.90.
  • the refractive index can be selected in a larger range, and it is easier to obtain thinner but better performance.
  • a good glass lens is beneficial to reduce the on-axis thickness TTL1 of the multiple lenses of the optical lens 10 , thereby reducing the optical length TTL of the optical lens 10 .
  • each lens of the optical lens 10 is made of a mixture of plastic material and glass material, so as to ensure that the optical lens 10 can have a small optical length and at the same time reduce the manufacturing cost of the optical lens 10 .
  • the relationship between the refractive index of the glass lens and the temperature change satisfies dn/dT>0, and the refractive index of the plastic lens meets the temperature change relationship with dn/dT ⁇ 0. Therefore, the temperature characteristics of the glass lens and the plastic lens are used.
  • the optimal image plane drift of the optical lens 10 caused by environmental changes can be corrected, so that the optical lens 10 can perform focusing without a motor or the like, and can also image clearly in the full temperature range of at least -40°C to +85°C.
  • the optical lens 10 is a glass lens, and the other lenses of the optical lens 10 are plastic lenses.
  • the optical lens 10 is a five-piece lens, including five lenses, wherein the second lens 12 is a glass lens, and the first lens 11 , the third lens 13 , the fourth lens 14 and the fifth lens 15 are all plastic lenses.
  • the second lens 12 and the fourth lens 14 are all glass lenses, and the first lens 11 , the third lens 13 and the fifth lens 15 are all plastic lenses.
  • the second lens 12 and the fourth lens 14 are both lenses with positive refractive power
  • at least one lens among the second lens 12 and the fourth lens 14 is made of glass material, which can better realize the Correction of optimal image plane drift of the optical lens 10 .
  • the object side and the image side of the second lens 12 are convex at the paraxial position, and the object side and the image side of the fourth lens 14 are both convex at the paraxial position.
  • the second lens 12 and/or the fourth lens 14 are glass lenses
  • the object side and the image side of the second lens 12 and/or the fourth lens 14 are convex surfaces at the paraxial position, which can make the second lens 12 and/or the fourth lens 14 convex.
  • the value of dn/dT of the fourth lens 14 is larger, so that the second lens 12 or the fourth lens 14 can better correct the temperature drift of the optical lens.
  • the second lens 12 and/or the fourth lens 14 include the second lens 12 or the fourth lens, or three cases of the second lens 12 and the fourth lens 14 .
  • the value of dn/dT of the second lens 12 is larger, so that the second lens 12 It can better correct the temperature drift of the optical lens.
  • the aperture value F# of the optical lens 10 satisfies: 0.8 ⁇ F# ⁇ 2.8. That is, the aperture value F# of the optical lens of the present application can be small, which can cover the application requirements for large apertures in the market, and achieve the purpose of providing a large aperture lens, so that the optical lens 10 can also have a large aperture even when the illumination is insufficient. better shooting effect.
  • the relationship between the effective focal length EFFL of the optical lens 10 and the total optical length TTL of the optical lens 10 satisfies: 0.2 ⁇ EFFL/TTL ⁇ 0.9, for example, EFFL/TTL may be 0.5, 0.8.
  • the optical lens 10 when the optical lens 10 satisfies the above relationship, the optical lens 10 can achieve a smaller overall optical length, so that the optical lens 10 can have the characteristics of miniaturization, so as to be more suitable for use in miniaturized electronic equipment.
  • EFL, TTL, and EFL/TTL appearing in various positions in this application have the same meaning, and will not be repeated in subsequent appearances.
  • EFFL/TTL may be slightly less than 0.2, such as 0.19, 0.18, etc.; or TTL/EFL may also be slightly greater than 0.9, such as 0.95, 1.0, etc.
  • the relationship between the effective focal length EFFL of the optical lens 10 and the maximum image height IH of the optical lens 10 satisfies: 0.4 ⁇ EFFL/IH ⁇ 2.0.
  • the optical lens 10 when the optical lens 10 satisfies the above relationship, the optical lens 10 can achieve a larger image height, so that the optical lens 10 can have the characteristics of a large field of view and high pixels.
  • EFFL/IH may also be slightly less than 0.4, such as 0.35, 0.3, etc.; or EFFL/IH may also be slightly greater than 2.0, such as 2.5, 3.0, etc.
  • the relationship between the effective focal length EFFL, the aperture value F# of the optical lens 10 and the total optical length TTL of the optical lens 10 satisfies: 0.1 ⁇ EFFL/(F# ⁇ TTL) ⁇ 0.5.
  • the values of F# and TTL can be small, that is, the optical lens 10 can have the characteristics of large aperture and miniaturization.
  • EFFL/(F# ⁇ TTL) may also be slightly smaller than 0.1, such as 0.09, 0.08, etc.; or EFFL/(F# ⁇ TTL) may also be slightly larger than 0.5, such as is 0.55, 0.65, etc.
  • the relationship between the effective focal length EFFL, the total optical length TTL, the maximum image height IH of the optical lens 10 and the aperture number F# of the optical lens 10 satisfies: (IH ⁇ EFFL)/(F# ⁇ TTL2) ⁇ 0.3.
  • the values of F# and TTL are small, and the value of IH is large, so the optical lens 10 can have the characteristics of large aperture, miniaturization, large field of view, and high pixels.
  • (IH ⁇ EFFL)/(F# ⁇ TTL2) may also be slightly larger than 0.3, such as 0.35, 0.4, and the like.
  • the field of view FOV of the optical lens 10 satisfies 40° ⁇ FOV ⁇ 140°, that is, in the embodiments of the present application, the variation range of the field of view FOV of the optical lens 10 can be larger, so that it can be adjusted according to actual needs.
  • the optical lens 10 with any angle of view is designed.
  • the maximum field angle of the optical lens 10 can reach 140°, so that the optical lens 10 can have a larger shooting field of view.
  • the focal power of each component is allocated reasonably to optimize the focal length of each component , Abbe number and other optical parameters, so that the optical lens 10 can simultaneously have the performance of small aperture F# value, large chief ray incident angle and large field angle.
  • the relationship between the focal length f 4 of the fourth lens 14 and the focal length EFFL of the optical lens 10 satisfies: 0.5 ⁇ f 4 /EFFL ⁇ 2.0.
  • the fourth lens 14 since the fourth lens 14 mainly bear the optical lens 10 of the optical power, when the fourth lens 14 focal length F of the optical lens 4 with a focal length of 10 EFFL satisfy the above relationship, it is possible to more easily achieve a large aperture design.
  • the Abbe number v2 of the second lens 12 and the Abbe number v3 of the third lens 13 satisfy the relationship:
  • the third lens 13 can more easily achieve the purpose of correcting chromatic aberration, improve the imaging quality of the optical lens 10 , and enhance the optical lens 10 analytical power.
  • the Abbe number v4 of the fourth lens 14 and the Abbe number v3 of the third lens 13 satisfy the relationship:
  • the third lens 13 can more easily achieve the purpose of correcting chromatic aberration, further improve the imaging quality of the optical lens 10, and enhance the optical lens 10 resolution.
  • the optical lens 10 When the optical lens 10 is a six-piece lens, the optical lens 10 satisfies the relationship:
  • v5 For the Abbe number of the five-piece lens, for the six-piece optical lens 10 of the present application, v5 represents the Abbe number of the supplementary lens 16 .
  • the supplementary lens 16 and the Abbe number of the fourth lens satisfy the above relationship, the supplementary lens 16 can more easily achieve the purpose of correcting chromatic aberration.
  • z is the sag of the aspheric surface
  • r is the radial coordinate of the aspheric surface
  • c is the spherical curvature of the aspheric surface vertex
  • K is the quadratic surface constant
  • a i is the aspheric surface coefficient
  • ⁇ is the normalized axial coordinate.
  • lenses with different aspherical surfaces can be obtained, so that different lenses can achieve different optical effects, so that the optical lens 10 with required performance can be obtained through the cooperation of different aspherical lenses.
  • the optical lens 10 can simultaneously have a small aperture F# value, a large chief ray incident angle, and a large field of view.
  • the optical lens 10, so that the optical lens 10 can meet various usage scenarios and various usage requirements. At the same time, a better imaging effect can also be obtained.
  • FIG. 4 is a schematic diagram of a partial structure of the optical lens 10 according to the first embodiment of the present application.
  • the optical lens 10 is a five-piece lens, including five lenses, and the five lenses are, from the object side to the image side, a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , The fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, and its object side is concave at the paraxial position, and the image side is convex at the paraxial position.
  • the second lens 12 is a positive refractive power lens, and the object side surface and the image side surface are convex surfaces at the paraxial position.
  • the third lens 13 is a negative refractive power lens, the object side surface is convex at the paraxial position, and the image side surface is concave surface at the paraxial position.
  • the fourth lens 14 is a positive refractive power lens made of glass material, and the object side, the image side and the paraxial are convex surfaces.
  • the fifth lens 15 is an M-shaped lens with at least one inflection point on both the object side and the image side, the object side is concave at the paraxial position, and the image measuring surface is concave at the paraxial position.
  • the fourth lens 14 is a glass lens, and the other lenses (including the first lens 11 , the second lens 12 , the third lens 13 , and the fifth lens 15 ) are all plastic lenses.
  • EFFL Effective focal length of the optical lens 10.
  • Aperture value which is the relative value derived from the focal length of the lens / the diameter of the lens's light transmission (the reciprocal of the relative aperture). The smaller the aperture F value, the more light enters in the same unit time.
  • FOV the field of view of the optical lens 10 .
  • TTL the total optical length of the optical lens 10 .
  • IH The maximum image height of the optical lens 10.
  • f 4 the focal length of the fourth lens element from the object side to the image side of the optical lens 10 , for the present application, the focal length of the fourth lens element 14 .
  • v2 the Abbe number of the second lens element from the object side to the image side of the optical lens 10 , and for the present application, the Abbe number of the second lens element 12 .
  • v3 the Abbe number of the third lens element from the object side to the image side of the optical lens 10 , for the present application, the Abbe number of the third lens element 13 .
  • v4 the Abbe number of the fourth lens element from the object side to the image side of the optical lens 10 , for the present application, the Abbe number of the fourth lens element 14 .
  • the optical lens 10 provided in this embodiment has an F# value of 2.0, an overall optical length TTL of 11 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can simultaneously have a large Characteristics of aperture, large viewing angle, large image height (with high resolution) and small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and the image side of each lens need to be matched, so as to obtain Optical lens 10 having the optical parameters in Table 1.
  • Table 2 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application
  • Table 3 shows the optical lens in the embodiment of the present application.
  • Table 2 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the first embodiment
  • R1 the radius of curvature at the paraxial of the object side of the first lens element from the object side to the image side of the optical lens 10 .
  • it means the radius of curvature at the paraxial axis of the object side surface of the first lens 11 .
  • the paraxial is the area close to the optical axis of the lens.
  • R2 the radius of curvature at the paraxial of the image side of the first lens from the object side to the image side of the optical lens 10 .
  • it means the radius of curvature at the paraxial axis of the image side surface of the first lens 11 .
  • R3 The radius of curvature at the paraxial of the object side of the second lens element from the object side to the image side of the optical lens 10 .
  • the radius of curvature at the paraxial axis of the object side of the second lens 12 is meant.
  • R4 the radius of curvature at the paraxial of the image side of the second lens element from the object side to the image side of the optical lens 10 .
  • it refers to the radius of curvature at the paraxial axis of the image side of the second lens 12 .
  • Stop refers to the diaphragm of the optical lens 10, wherein Infinity means that the surface of the diaphragm is a plane.
  • R5 the radius of curvature at the paraxial of the object side of the third lens element from the object side to the image side of the optical lens 10 .
  • the radius of curvature at the paraxial axis of the object side surface of the third lens 13 is represented.
  • R6 the radius of curvature at the paraxial of the image side of the third lens element from the object side to the image side of the optical lens 10 .
  • the radius of curvature at the paraxial axis of the image side surface of the third lens 13 is represented.
  • R7 the radius of curvature at the paraxial of the object side of the fourth lens element from the object side to the image side of the optical lens 10 .
  • the radius of curvature at the paraxial axis of the object side of the fourth lens 14 is represented.
  • R8 the radius of curvature at the paraxial of the image side of the fourth lens element from the object side to the image side of the optical lens 10 .
  • the radius of curvature at the paraxial axis of the image side surface of the fourth lens 14 is represented.
  • R9 the radius of curvature at the paraxial of the object side of the fifth lens element from the object side to the image side of the optical lens 10 .
  • the radius of curvature at the paraxial position of the object side surface of the fifth lens 15 is shown.
  • R10 the radius of curvature at the paraxial of the image side of the fifth lens element from the object side to the image side of the optical lens 10. In the present embodiment, the radius of curvature at the paraxial position of the image side surface of the fifth lens 15 is shown.
  • the on-axis thickness of the first lens element from the object side to the image side of the optical lens 10 .
  • the on-axis thickness of the first lens 11 is meant.
  • d2 the on-axis thickness of the second lens element from the object side to the image side of the optical lens 10 .
  • the on-axis thickness of the second lens 12 is meant.
  • d3 On-axis thickness of the third lens element from the object side to the image side of the optical lens 10 .
  • the on-axis thickness of the third lens 13 is indicated.
  • d4 On-axis thickness of the fourth lens element from the object side to the image side of the optical lens 10 .
  • the on-axis thickness of the fourth lens 14 is represented.
  • d5 the on-axis thickness of the fifth lens element of the optical lens 10 from the object side to the image side.
  • the on-axis thickness of the fifth lens 15 is indicated.
  • a1 the on-axis distance between the image side surface of the first lens element and the object side surface of the second lens element from the object side to the image side of the optical lens 10 .
  • it means the on-axis distance between the image side surface of the first lens 11 and the object side surface of the second lens 12 .
  • a2 The axial distance between the image side of the second lens element and the object side surface of the third lens element from the object side to the image side of the optical lens 10 .
  • it means the on-axis distance between the image side surface of the second lens 12 and the object side surface of the third lens 13 .
  • a3 The axial distance between the image side of the third lens element from the object side to the image side of the optical lens 10 and the object side surface of the fourth lens element.
  • the on-axis distance between the image side surface of the third lens 13 and the object side surface of the fourth lens 14 is represented.
  • a4 The axial distance between the image side of the fourth lens element from the object side to the image side of the optical lens 10 and the object side surface of the fifth lens element.
  • the on-axis distance between the image side surface of the fourth lens 14 and the object side surface of the fifth lens 15 is represented.
  • a5 the on-axis distance from the image side of the fifth lens from the object side to the image side of the optical lens 10 to the object side of the lens adjacent to the image side of the fifth lens or the object side of the infrared filter 30 .
  • the optical lens 10 is a five-piece lens
  • the fifth lens is the fifth lens
  • the image side of the fifth lens 15 is adjacent to the infrared filter 30. Therefore, in this embodiment, a5 Indicates the axial distance between the image side of the fifth lens 15 and the object side of the infrared filter 30 .
  • n1 the refractive index of the first lens element of the optical lens 10 from the object side to the image side.
  • the index of refraction of the first lens 11 is represented.
  • n2 the refractive index of the second lens element of the optical lens 10 from the object side to the image side.
  • the index of refraction of the second lens 12 is represented.
  • n3 the refractive index of the third lens element from the object side to the image side of the optical lens 10 .
  • the index of refraction of the third lens 13 is represented.
  • n4 the refractive index of the fourth lens element of the optical lens 10 from the object side to the image side.
  • the index of refraction of the fourth mirror 14 is represented.
  • n5 the refractive index of the fifth lens element of the optical lens 10 from the object side to the image side.
  • the refractive index of the fifth mirror 15 is shown.
  • v1 the refractive index of the first lens element from the object side to the image side of the optical lens 10 .
  • the Abbe number of the first lens 11 is represented.
  • v2 Abbe number of the second lens element from the object side to the image side of the optical lens 10 .
  • the Abbe number of the second lens 12 is represented.
  • v3 Abbe number of the third lens element from the object side to the image side of the optical lens 10 .
  • the Abbe number of the third lens 13 is represented.
  • v4 Abbe number of the fourth lens element from the object side to the image side of the optical lens 10 .
  • the Abbe number of the fourth lens 14 is represented.
  • v5 Abbe number of the fifth lens element from the object side to the image side of the optical lens 10 .
  • the Abbe number of the fifth lens 15 is shown.
  • each parameter in the table is expressed in scientific notation.
  • -5.24E+00 means -5.24 ⁇ 10 0 ; 3.00E-01 means 3.00 ⁇ 10 ⁇ 1 .
  • the positive or negative of the curvature radius indicates that the optical surface is convex to the object side or the image side.
  • the curvature radius of the optical surface is a positive value;
  • the side or image side is convex to the image side, it is equivalent to the concave optical surface facing the object side, and the curvature radius of the optical surface is negative.
  • the object side surface and the image side surface of each lens are both aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 3 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • K is a quadratic surface constant, a4, a6, a8, a10, a12, a14, a16, a18, a20 and other symbols represent aspheric coefficients. It should be noted that when symbols such as K, a4, a6, a8, a10, a12, a14, a16, a18, and a20 appear again in this application, unless otherwise explained, the meanings are the same as those here. No further description will be given later.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the vector height of the aspheric surface
  • r is the radial coordinate of the aspheric surface
  • c is the spherical curvature of the aspheric surface vertex
  • K is the quadric surface constant
  • a4 a6, a8, a10, a12, a14, a16, a18, a20 is the aspheric coefficient.
  • FIG. 5-FIG. 7c are characterization diagrams of the optical performance of the optical lens 10 of the first embodiment.
  • FIG. 5 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the first embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 5 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, and the unit is millimeters. It can be seen from FIG. 5 that in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 6 shows the incident angle curve of the chief ray of the optical lens 10 according to the first embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • FIG. 6 is used to characterize the curve change of the incident angle of the chief ray at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 38.4°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • FIG. 7a is a temperature drift modulation transfer function (MTF) curve of the optical lens 10 of the first embodiment at normal temperature (22°C);
  • FIG. 7b is a temperature change of the optical lens 10 of the first embodiment at -30°C.
  • FIG. 7c is the temperature drift modulation contrast curve of the optical lens 10 of the first embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from FIG. 7a, FIG. 7b, and FIG.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is in the
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 8 is a schematic diagram of a partial structure of the optical lens 10 according to the second embodiment of the present application.
  • the optical lens 10 is a five-piece lens, including five lenses, and the five lenses are, from the object side to the image side, a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , The fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, and its object side is concave at the paraxial position, and its image side is convex at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and its object side and image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial positions are all convex;
  • the fifth lens 15 is an M-shaped lens, and both the object side and the image side have at least one inflection point, the object side is concave at the paraxial position, and the image measuring surface is concave at the paraxial position.
  • the fourth lens 14 is a glass lens, and the other lenses (including the first lens 11 , the second lens 12 , the third lens 13 , and the fifth lens 15 ) are all plastic lenses.
  • the optical lens 10 provided in this embodiment has an F# value of 2.0, an overall optical length TTL of 11 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can simultaneously have a large Aperture, large viewing angle, large image height (with high resolution) and a small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and the image side of each lens need to be matched, so as to obtain Optical lens 10 with the optical parameters in Table 4.
  • Table 5 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application
  • Table 6 shows the optical lens in the embodiment of the present application.
  • Table 5 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the second embodiment
  • the object side surface and the image side surface of each lens are both aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 6 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the sag of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspheric vertex
  • K is the quadratic surface constant
  • a4 a6, a8 , a10, a12, a14, a16, a18, and a20 are aspheric coefficients.
  • 9-11c are graphs showing the optical performance of the optical lens 10 according to the second embodiment.
  • FIG. 9 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the second embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 9 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, and the unit is millimeter.
  • the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 10 shows the incident angle curve of the chief ray of the optical lens 10 according to the second embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Fig. 10 is used to characterize the curve change of the incident angle of the chief ray at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 37.2°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 11a is a temperature-drift modulation contrast curve of the optical lens 10 of the second embodiment at normal temperature (22°C);
  • Fig. 11b is a temperature-drift modulation contrast curve of the optical lens 10 of the second embodiment at -30°C;
  • Fig. 11c It is the temperature drift modulation contrast curve of the optical lens 10 of the second embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from FIGS.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 12 is a schematic diagram showing a partial structure of the optical lens 10 according to the third embodiment of the present application.
  • the optical lens 10 is a five-piece lens, including five lenses.
  • the five lenses are, from the object side to the image side, a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , The fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, the object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and the object side and the image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial positions are all convex;
  • the fifth lens 15 is an M-shaped lens, and both the object side and the image side have at least one inflection point, the object side is concave at the paraxial position, and the image measuring surface is concave at the paraxial position.
  • the fourth lens 14 is a glass lens, and the other lenses (including the first lens 11 , the second lens 12 , the third lens 13 , and the fifth lens 15 ) are all plastic lenses.
  • EFFL Effective focal length of the optical lens 10.
  • Aperture value which is the relative value (reciprocal of relative aperture) derived from the focal length of the lens / the diameter of the lens's light transmission. The smaller the aperture F value, the more light enters in the same unit time.
  • FOV the field of view of the optical lens 10 .
  • TTL the total optical length of the optical lens 10
  • TTL is the sum of the back focal length BFL of the optical lens 10 and the on-axis thickness TTL1 of the multiple lenses of the optical lens 10 .
  • IH The maximum image height of the optical lens 10.
  • v2 Abbe number of the second lens 12.
  • v3 Abbe number of the third lens 13.
  • v4 Abbe number of the fourth lens 14.
  • the optical lens 10 provided in this embodiment has an F# value of 2.0, an overall optical length TTL of 11.5 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can have both The characteristics of large aperture, large viewing angle, large image height (with high resolution) and small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with the optical parameters in Table 7.
  • Table 8 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application
  • Table 9 shows the optical lens in the embodiment of the present application.
  • Table 8 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the third embodiment
  • the object side surface and the image side surface of each lens are aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 9 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the vector height of the aspheric surface
  • r is the radial coordinate of the aspheric surface
  • c is the spherical curvature of the aspheric surface vertex
  • K is the quadric surface constant
  • a4 a6, a8, a10, a12, a14, a16, a18, a20 is the aspheric coefficient.
  • 13-15c are characterization diagrams of the optical performance of the optical lens 10 of the third embodiment.
  • FIG. 13 is a schematic diagram illustrating the axial chromatic aberration of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the optical lens 10 of the third embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 13 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters.
  • the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 14 shows the incident angle curve of the chief ray of the optical lens 10 according to the third embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Fig. 14 is used to characterize the curve change of the incident angle of the chief ray at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 38.2°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 15a is a temperature-drift modulation contrast curve of the optical lens 10 of the third embodiment at normal temperature (22°C);
  • Fig. 15b is a temperature-drift modulation contrast curve of the optical lens 10 of the third embodiment at -30°C;
  • Fig. 15c It is the temperature drift modulation contrast curve of the optical lens 10 of the third embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 15a, Fig. 15b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is The temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 16 is a schematic diagram showing a partial structure of the optical lens 10 according to the fourth embodiment of the present application.
  • the optical lens 10 is a five-piece lens, including five lenses, and the five lenses are, from the object side to the image side, a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , The fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, and its object side is concave at the paraxial position, and its image side is convex at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and its object side and image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial positions are all convex;
  • the fifth lens 15 is an M-shaped lens, and both the object side and the image side have at least one inflection point, the object side is concave at the paraxial position, and the image measuring surface is concave at the paraxial position.
  • the fourth lens 14 is a glass lens, and the other lenses (including the first lens 11 , the second lens 12 , the third lens 13 , and the fifth lens 15 ) are all plastic lenses.
  • Focal length EFFL 5.22mm F# value 2.0 FOV 119° IH 9.5mm Overall Optical Length TTL 13.1mm EFFL/TTL 0.398 EFFL/IH 0.549 EFFL/(F# ⁇ TTL) 0.199 (IH ⁇ EFFL)/(F# ⁇ TTL2) 0.144 f4/EFFL 0.87
  • EFFL Effective focal length of the optical lens 10.
  • Aperture value which is the relative value derived from the focal length of the lens / the diameter of the lens's light transmission (the reciprocal of the relative aperture). The smaller the aperture F value, the more light enters in the same unit time.
  • FOV the field of view of the optical lens 10 .
  • TTL the total optical length of the optical lens 10 , TTL is the sum of the back focal length BFL of the optical lens 10 and the on-axis thickness TTL1 of the multiple lenses of the optical lens 10 .
  • IH The maximum image height of the optical lens 10.
  • v2 Abbe number of the second lens 12.
  • v3 Abbe number of the third lens 13.
  • v4 Abbe number of the fourth lens 14.
  • the optical lens 10 provided in this embodiment has an F# value of 2.0, an overall optical length TTL of 13.1 mm, an IH of 9.5 mm, and a FOV of 119°, that is, the optical lens 10 of this embodiment can have both The characteristics of large aperture, large viewing angle, large image height (with high resolution) and small optical length.
  • this embodiment increases the optical total length of the optical lens 10 by an appropriate amount, so that the field of view of the optical lens 10 of this embodiment is larger, and a larger field of view can be captured.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens and the surface coefficients of the object side and image side of each lens need to be matched to obtain Optical lens 10 with optical parameters in Table 10.
  • Table 11 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application
  • Table 12 shows the optical lens in the embodiment of the present application.
  • Table 11 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the fourth embodiment
  • the object side surface and the image side surface of each lens are both aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 12 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the sag of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 17-19c are graphs showing the optical performance of the optical lens 10 according to the fourth embodiment.
  • Fig. 17 is a schematic diagram showing the axial chromatic aberration of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the optical lens 10 of the fourth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 17 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters. It can be seen from FIG. 17 that in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 18 shows the incident angle curve of the chief ray of the optical lens 10 according to the fourth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Fig. 18 is used to characterize the curve change of the incident angle of the chief ray at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 42.3°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 19a is a temperature-drift modulation contrast curve of the optical lens 10 of the fourth embodiment at normal temperature (22°C);
  • Fig. 19b is a temperature-drift modulation contrast curve of the optical lens 10 of the fourth embodiment at -30°C;
  • Fig. 19c It is the temperature drift modulation contrast curve of the optical lens 10 of the fourth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 19a, Fig. 19b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 20 is a schematic diagram showing a partial structure of the optical lens 10 according to the fifth embodiment of the present application.
  • the optical lens 10 is a five-piece lens, including five lenses.
  • the five lenses are, from the object side to the image side, a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , The fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, and its object side is concave at the paraxial position, and its image side is convex at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and its object side and image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial positions are all convex;
  • the fifth lens 15 is an M-shaped lens, and both the object side and the image side have at least one inflection point, the object side is concave at the paraxial position, and the image measuring surface is concave at the paraxial position.
  • the fourth lens 14 is a glass lens, and the other lenses (including the first lens 11 , the second lens 12 , the third lens 13 , and the fifth lens 15 ) are all plastic lenses.
  • the optical lens 10 provided in this embodiment has an F# value of 2.0, an overall optical length TTL of 7.0 mm, an IH of 4.6 mm, and a FOV of 40°, that is, the optical lens 10 of this embodiment can have both The characteristics of large aperture, large viewing angle, large image height (with high resolution) and small optical length.
  • the optical lens 10 of the present embodiment is smaller in total optical length, and can be more suitable for use in miniaturized electronic devices.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens and the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with the optical parameters in Table 13.
  • Table 14 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application.
  • Table 15 shows the optical lens in this embodiment. Surface coefficient of each lens in 10.
  • Table 14 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the fifth embodiment
  • the object side surface and the image side surface of each lens are both aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 15 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the vector height of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 21-23c are characterization diagrams of the optical performance of the optical lens 10 of the fifth embodiment.
  • FIG. 21 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the fifth embodiment. It represents the focal depth position of the optical lens 10 on the image side of the optical lens 10 after light of different wavelengths passes through the optical lens 10.
  • the ordinate of FIG. 21 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters. It can be seen from FIG. 21 that in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 22 shows the incident angle curve of the chief ray of the optical lens 10 according to the fifth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Fig. 22 is used to characterize the curve change of the incident angle of the chief ray at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 27.8°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 23a is a temperature-drift modulation contrast curve of the optical lens 10 of the fifth embodiment at normal temperature (22°C);
  • Fig. 23b is a temperature-drift modulation contrast curve of the optical lens 10 of the fifth embodiment at -30°C;
  • Fig. 23c It is the temperature drift modulation contrast curve of the optical lens 10 of the fifth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from FIG. 23a, FIG. 23b, and FIG.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 24 is a schematic diagram showing a partial structure of the optical lens 10 according to the sixth embodiment of the present application.
  • the optical lens 10 is a five-piece lens, including five lenses.
  • the five lenses are, from the object side to the image side, a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , The fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, and its object side is concave at the paraxial position, and its image side is convex at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and its object side and image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial positions are all convex;
  • the fifth lens 15 is an M-shaped lens, and both the object side and the image side have at least one inflection point, the object side is concave at the paraxial position, and the image measuring surface is concave at the paraxial position.
  • the second lens 12 is a glass lens, and the other lenses (including the first lens 11 , the fourth lens 14 , the third lens 13 , and the fifth lens 15 ) are all plastic lenses.
  • the optical lens 10 provided in this embodiment has an F# value of 2.0, an overall optical length TTL of 10.5 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can have both The characteristics of large aperture, large viewing angle, large image height (with high resolution) and small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with optical parameters in Table 16.
  • Table 17 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application
  • Table 18 shows the optical lens in this embodiment.
  • Table 17 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the sixth embodiment
  • the object side surface and the image side surface of each lens are aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 18 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the vector height of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 25-27c are characterization diagrams of the optical performance of the optical lens 10 of the sixth embodiment.
  • FIG. 25 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the sixth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 25 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters. It can be seen from FIG. 25 that in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 26 shows the incident angle curve of the chief ray of the optical lens 10 according to the sixth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Figure 26 is used to characterize the curve change of the chief ray incident angle at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 27.8°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 27a is a temperature-drift modulation contrast curve of the optical lens 10 of the sixth embodiment at normal temperature (22°C);
  • Fig. 27b is a temperature-drift modulation contrast curve of the optical lens 10 of the sixth embodiment at -30°C;
  • Fig. 27c It is the temperature drift modulation contrast curve of the optical lens 10 of the sixth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 27a, Fig. 27b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 28 is a schematic diagram showing a partial structure of the optical lens 10 according to the seventh embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses, and the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, and its object side is concave at the paraxial position, and its image side is convex at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and its object side and image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial position is convex;
  • the supplementary lens 16 is a negative power lens, and the object side and the image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, and there are at least one object side and image side. For an inflection point, the object side is convex at the paraxial position, and the image measuring surface is concave at the paraxial position.
  • the fourth lens 14 is a glass lens, and the other lenses (including the first lens 11 , the second lens 12 , the third lens 13 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • Focal length EFFL 5.62mm F# value 1.5 FOV 94° IH 9.5mm Overall Optical Length TTL 14mm EFFL/TTL 0.40 EFFL/IH 0.592 EFFL/(F# ⁇ TTL) 0.267 (IH ⁇ EFFL)/(F# ⁇ TTL2) 0.182 f4/EFFL 0.95
  • v5 represents the Abbe number of the fifth lens element of the optical lens 10 from the object side to the image side.
  • the optical lens 10 is a six-piece lens
  • the fifth lens from the object side to the image side of the optical lens 10 is a supplementary lens. Therefore, in this embodiment, v5 represents the Abbe number of the supplementary lens 16 . Please refer to Table 1 for the meanings of other symbols in the table.
  • the optical lens 10 provided in this embodiment has an F# value of 1.5, an overall optical length TTL of 14 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can simultaneously have a large Aperture, large viewing angle, large image height (with high resolution) and a small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with optical parameters in Table 19.
  • Table 20 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application.
  • Table 21 shows the optical lens in the embodiment of the present application. Surface coefficient of each lens in 10.
  • Table 20 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the seventh embodiment
  • R9 represents the radius of curvature at the paraxial position of the object side of the fifth lens from the object side to the image side of the optical lens 10;
  • R10 represents the image side of the fifth lens of the optical lens 10 from the object side to the image side
  • the radius of curvature at the paraxial axis of since the optical lens 10 is a six-piece lens, the fifth lens from the object side to the image side of the optical lens 10 is a supplementary lens. Therefore, in this embodiment, R9 represents the near side of the object side of the supplementary lens 16 .
  • the radius of curvature at the axis, R10 represents the radius of curvature at the paraxial axis of the image side of the supplemental lens 16 .
  • R11 represents the radius of curvature at the paraxial side of the object side of the sixth lens from the object side to the image side of the optical lens 10;
  • R12 represents the paraxial position of the image side of the sixth lens from the object side to the image side of the optical lens 10 the radius of curvature.
  • the sixth lens element from the object side to the image side of the optical lens 10 is the fifth lens element 15 . Therefore, in this embodiment, R11 represents the radius of curvature at the paraxial position of the object side of the fifth lens element 15 , and R12 Indicates the radius of curvature at the paraxial axis of the image side surface of the fifth lens 15 .
  • d5 represents the on-axis thickness of the fifth lens element of the optical lens 10 from the object side to the image side.
  • the optical lens 10 since the optical lens 10 is a six-piece lens, the fifth lens from the object side to the image side of the optical lens 10 is a supplementary lens. Therefore, in this embodiment, d5 represents the on-axis thickness of the supplementary lens 16 .
  • d65 represents the on-axis thickness of the sixth lens element of the optical lens 10 from the object side to the image side.
  • the optical lens 10 is a six-piece lens
  • the sixth lens from the object side to the image side of the optical lens 10 is the fifth lens 15 . Therefore, in this embodiment, d6 represents the axis of the fifth lens 15 upper thickness.
  • a5 represents the axis of the optical lens 10 from the object side to the image side of the fifth lens on the image side to the object side of the lens adjacent to the image side of the fifth lens or the object side of the infrared filter 30 up the distance.
  • the optical lens 10 since the optical lens 10 is a six-piece lens, the fifth lens from the object side to the image side of the optical lens 10 is the supplementary lens 16, and the image side of the supplementary lens 16 is adjacent to the fifth lens 15. Therefore,
  • a5 represents the on-axis distance between the image side surface of the on-axis lens and the object side surface of the fifth lens 15 .
  • a6 represents the on-axis distance from the object side to the image side of the sixth lens on the image side of the optical lens 10 to the object side of the lens adjacent to the image side of the sixth lens or the object side of the infrared filter 30 .
  • the optical lens 10 is a six-piece lens
  • the sixth lens from the object side to the image side of the optical lens 10 is the fifth lens 15
  • the image side of the fifth lens 15 is adjacent to the infrared filter 30 Therefore, in this embodiment, a6 represents the axial distance between the image side surface of the fifth lens 15 and the object side surface of the infrared filter 30 .
  • n5 represents the refractive index of the fifth lens element from the object side to the image side of the optical lens 10 .
  • the fifth lens from the object side to the image side of the optical lens 10 is the supplementary lens 16, then in this embodiment, n6 represents the refractive index of the supplementary lens 16; n6 represents the object of the optical lens 10 Refractive index of the sixth element from the side to the image side.
  • the sixth lens from the object side to the image side of the optical lens 10 is the supplementary lens 16 , and in this embodiment, n6 represents the refractive index of the fifth lens 15 .
  • v5 represents the Abbe number of the fifth lens element from the object side to the image side of the optical lens 10 .
  • the fifth lens from the object side to the image side of the optical lens 10 is the supplementary lens 16
  • v5 represents the Abbe number of the supplementary lens 16
  • v6 represents the Abbe number of the sixth lens element from the object side to the image side of the optical lens 10 .
  • the sixth lens from the object side to the image side of the optical lens 10 is the supplementary lens 16
  • v6 represents the Abbe number of the fifth lens 15 .
  • the object side surface and the image side surface of each lens are both aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 21 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • R9 represents the radius of curvature at the paraxial position of the object side of the supplementary lens 16
  • R10 represents the radius of curvature at the paraxial position of the image side of the supplementary lens 16
  • R11 represents the paraxial radius of the object side of the fifth lens 15
  • Radius of curvature R12 represents the radius of curvature at the paraxial position of the image side surface of the fifth lens 15 ; please refer to Table 3 for the meanings of other symbols in the table except R9, R10, R11, and R12.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the vector height of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 29-31c are graphs showing the optical performance of the optical lens 10 according to the seventh embodiment.
  • FIG. 29 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the seventh embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 29 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters. It can be seen from FIG. 29 that, in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 30 shows the incident angle curve of the chief ray of the optical lens 10 according to the seventh embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Fig. 30 is used to characterize the curve change of the incident angle of the chief ray at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 37.9°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 31a is a temperature-drift modulation contrast curve of the optical lens 10 of the seventh embodiment at normal temperature (22°C);
  • Fig. 31b is a temperature-drift modulation contrast curve of the optical lens 10 of the seventh embodiment at -30°C;
  • Fig. 31c It is the temperature drift modulation contrast curve of the optical lens 10 of the seventh embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 32 is a schematic diagram showing a partial structure of the optical lens 10 according to the eighth embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses.
  • the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, and its object side is concave at the paraxial position, and its image side is convex at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and its object side and image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial position is convex;
  • the supplementary lens 16 is a negative power lens, and the object side and the image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, and there are at least one object side and image side. Inflection point, the object side is convex at the paraxial position, and the image measuring surface is convex at the paraxial position.
  • the fourth lens 14 is a glass lens, and the other lenses (including the first lens 11 , the second lens 12 , the third lens 13 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • the optical lens 10 provided in this embodiment has an F# value of 1.5, an overall optical length TTL of 14 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can simultaneously have a large Aperture, large viewing angle, large image height (with high resolution) and a small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with the optical parameters in Table 22.
  • Table 23 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application.
  • Table 24 shows the optical lens in this embodiment. Surface coefficient of each lens in 10.
  • Table 23 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the eighth embodiment
  • the object side surface and the image side surface of each lens are aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 24 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the vector height of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 33-35c are characterization diagrams of the optical performance of the optical lens 10 according to the eighth embodiment.
  • FIG. 33 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the eighth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 33 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters.
  • the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 34 shows the incident angle curve of the chief ray of the optical lens 10 according to the eighth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Figure 34 is used to characterize the curve change of the chief ray incident angle at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 38.8°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 35a is the temperature-drift modulation contrast curve of the optical lens 10 of the eighth embodiment at normal temperature (22°C);
  • Fig. 35b is the temperature-drift modulation contrast curve of the optical lens 10 of the eighth embodiment at -30°C;
  • Fig. 35c It is the temperature drift modulation contrast curve of the optical lens 10 of the eighth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 35a, Fig. 35b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is in the The temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 36 is a schematic diagram showing a partial structure of the optical lens 10 according to the ninth embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses, and the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, and its object side is concave at the paraxial position, and its image side is convex at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and its object side and image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial position is convex;
  • the supplementary lens 16 is a negative power lens, and the object side and the image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, and there are at least one object side and image side. Inflection point, the object side is convex at the paraxial position, and the image measuring surface is convex at the paraxial position.
  • the fourth lens 14 is a glass lens, and the other lenses (including the first lens 11 , the second lens 12 , the third lens 13 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • Focal length EFFL 5.67mm F# value 1.5 FOV 94° IH 9.5mm Overall Optical Length TTL 14mm EFFL/TTL 0.41 EFFL/IH 0.597 EFFL/(F# ⁇ TTL) 0.270 (IH ⁇ EFFL)/(F# ⁇ TTL2) 0.183 f4/EFFL 0.94
  • the optical lens 10 provided in this embodiment has an F# value of 1.5, an overall optical length TTL of 14 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can simultaneously have a large Aperture, large viewing angle, large image height (with high resolution) and a small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with the optical parameters in Table 25.
  • Table 26 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application
  • Table 27 shows the optical lens in the embodiment of the present application.
  • Table 26 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the ninth embodiment
  • the object side surface and the image side surface of each lens are both aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 27 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be limited by the following aspherical formula:
  • z is the sag of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 37-39c are graphs showing the optical performance of the optical lens 10 according to the ninth embodiment.
  • FIG. 37 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the ninth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 37 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters.
  • the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 38 shows the incident angle curve of the chief ray of the optical lens 10 according to the ninth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Fig. 38 is used to characterize the curve change of the incident angle of chief ray at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 42.5°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 39a is the temperature-drift modulation contrast curve of the optical lens 10 of the ninth embodiment at normal temperature (22°C);
  • Fig. 39b is the temperature-drift modulation contrast curve of the optical lens 10 of the ninth embodiment at -30°C;
  • Fig. 39c It is the temperature drift modulation contrast curve of the optical lens 10 of the ninth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 39a, Fig. 39b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 40 is a schematic diagram showing a partial structure of the optical lens 10 according to the tenth embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses, and the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, the object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and the object side and the image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial position is convex;
  • the supplementary lens 16 is a negative power lens, and the object side and the image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, and there are at least one object side and image side. Inflection point, the object side is convex at the paraxial position, and the image measuring surface is convex at the paraxial position.
  • the fourth lens 14 is a glass lens, and the other lenses (including the first lens 11 , the second lens 12 , the third lens 13 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • Focal length EFFL 5.77mm F# value 1.5 FOV 94° IH 9.5mm Overall Optical Length TTL 14mm EFFL/TTL 0.41 EFFL/IH 0.607 EFFL/(F# ⁇ TTL) 0.275 (IH ⁇ EFFL)/(F# ⁇ TTL2) 0.186 f4/EFFL 0.97
  • the optical lens 10 provided in this embodiment has an F# value of 1.5, an overall optical length TTL of 14 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can simultaneously have a large Aperture, large viewing angle, large image height (with high resolution) and a small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with optical parameters in Table 28.
  • Table 29 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application
  • Table 30 shows the optical lens in the embodiment of the present application.
  • Table 29 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the tenth embodiment
  • the object side surface and the image side surface of each lens are both aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 30 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the vector height of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 41-43c are characterization diagrams of the optical performance of the optical lens 10 according to the tenth embodiment.
  • FIG. 41 is a schematic diagram showing the axial chromatic aberration of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the optical lens 10 of the tenth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 41 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters. It can be seen from FIG. 41 that in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 42 shows the incident angle curve of the chief ray of the optical lens 10 according to the tenth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Figure 42 is used to characterize the curve change of the incident angle of chief ray at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 40.6°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 43a is the temperature-drift modulation contrast curve of the optical lens 10 of the tenth embodiment at normal temperature (22°C);
  • Fig. 43b is the temperature-drift modulation contrast curve of the optical lens 10 of the tenth embodiment at -30°C;
  • Fig. 43c It is the temperature drift modulation contrast curve of the optical lens 10 of the tenth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 43a, Fig. 43b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 44 is a schematic diagram showing a partial structure of the optical lens 10 according to the eleventh embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses.
  • the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, the object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and the object side and the image side are at the paraxial position.
  • the third lens 13 is a positive power lens, the object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is close to the image side.
  • the axis is convex;
  • the supplementary lens 16 is a negative power lens, and the object side and the image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, and both the object side and the image side have at least one reflection.
  • the curved point, the object side is convex at the paraxial position, and the image measuring surface is convex at the paraxial position.
  • the fourth lens 14 is a glass lens, and the other lenses (including the first lens 11 , the second lens 12 , the third lens 13 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • the optical lens 10 provided in this embodiment has an F# value of 1.5, an overall optical length TTL of 14 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can simultaneously have a large Aperture, large viewing angle, large image height (with high resolution) and a small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with optical parameters in Table 31.
  • Table 32 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application.
  • Table 33 shows the optical lens in this embodiment. Surface coefficient of each lens in 10.
  • the object side surface and the image side surface of each lens are aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 33 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the vector height of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 45-47c are characterization diagrams of the optical performance of the optical lens 10 according to the eleventh embodiment.
  • FIG. 45 is a schematic diagram of axial chromatic aberration of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the optical lens 10 of the eleventh embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of Fig. 45 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters. It can be seen from FIG. 45 that in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 46 shows the incident angle curve of the chief ray of the optical lens 10 according to the eleventh embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Figure 46 is used to characterize the curve change of the incident angle of chief ray at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 36.5°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 47a is a temperature-drift modulation contrast curve of the optical lens 10 of the eleventh embodiment at normal temperature (22°C);
  • Fig. 47b is a temperature-drift modulation contrast curve of the optical lens 10 of the eleventh embodiment at -30°C;
  • FIG. 47c is a temperature-drift modulation contrast curve of the optical lens 10 of the eleventh embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 47a, Fig. 47b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 48 is a schematic diagram showing a partial structure of the optical lens 10 according to the twelfth embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses.
  • the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, the object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and the object side and the image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial position is convex;
  • the supplementary lens 16 is a negative power lens, and the object side and the image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, and there are at least one object side and image side. Inflection point, the object side is convex at the paraxial position, and the image measuring surface is convex at the paraxial position.
  • the second lens 12 is a glass lens, and the other lenses (including the first lens 11 , the third lens 13 , the fourth lens 14 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • Focal length EFFL 5.48mm F# value 1.5 FOV 94° IH 9.5mm Overall Optical Length TTL 14mm EFFL/TTL 0.39 EFFL/IH 0.577 EFFL/(F# ⁇ TTL) 0.261 (IH ⁇ EFFL)/(F# ⁇ TTL2) 0.177 f4/EFFL 0.92
  • the optical lens 10 provided in this embodiment has an F# value of 1.5, an overall optical length TTL of 14 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can simultaneously have a large Aperture, large viewing angle, large image height (with high resolution) and a small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens and the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with optical parameters in Table 34.
  • Table 35 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application
  • Table 36 shows the optical lens in this embodiment.
  • the object side surface and the image side surface of each lens are both aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 36 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the sag of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 49-51c are graphs showing the optical performance of the optical lens 10 according to the twelfth embodiment.
  • FIG. 49 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the twelfth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 49 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters.
  • the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 50 shows the incident angle curve of the chief ray of the optical lens 10 according to the twelfth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Figure 50 is used to characterize the curve change of the incident angle of the chief ray at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 38.7°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 51a is a temperature-drift modulation contrast curve of the optical lens 10 of the twelfth embodiment at normal temperature (22°C);
  • Fig. 51b is a temperature-drift modulation contrast curve of the optical lens 10 of the twelfth embodiment at -30°C;
  • FIG. 51c is a temperature drift modulation contrast curve of the optical lens 10 of the twelfth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 51a, Fig. 51b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 52 is a schematic diagram showing a partial structure of the optical lens 10 according to the thirteenth embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses.
  • the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, the object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and the object side and the image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial position is convex;
  • the supplementary lens 16 is a positive power lens, and its object side and image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, and both the object side and the image side have at least one inverse.
  • the curved point, the object side is convex at the paraxial position, and the image measuring surface is convex at the paraxial position.
  • the second lens 12 is a glass lens, and the other lenses (including the first lens 11 , the third lens 13 , the fourth lens 14 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • Focal length EFFL 5.63mm F# value 1.5 FOV 94° IH 9.5mm Overall Optical Length TTL 14mm EFFL/TTL 0.40 EFFL/IH 0.592 EFFL/(F# ⁇ TTL) 0.268 (IH ⁇ EFFL)/(F# ⁇ TTL2) 0.182 f4/EFFL 0.94
  • the optical lens 10 provided in this embodiment has an F# value of 1.5, an overall optical length TTL of 14 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can simultaneously have a large Aperture, large viewing angle, large image height (with high resolution) and a small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens and the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with optical parameters in Table 37.
  • Table 38 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application.
  • Table 39 shows the optical lens in this embodiment. Surface coefficient of each lens in 10.
  • the object side surface and the image side surface of each lens are aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 39 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the sag of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 53-55c are characterization diagrams of the optical performance of the optical lens 10 according to the thirteenth embodiment.
  • FIG. 53 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the thirteenth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 53 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters. It can be seen from FIG. 53 that in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 54 shows the incident angle curve of the chief ray of the optical lens 10 according to the thirteenth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Figure 54 is used to characterize the curve change of the chief ray incident angle at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 38.8°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 55a is a temperature drift modulation contrast curve of the optical lens 10 of the thirteenth embodiment at normal temperature (22°C);
  • Fig. 55b is a temperature drift modulation contrast curve of the optical lens 10 of the thirteenth embodiment at -30°C;
  • FIG. 55c is a temperature drift modulation contrast curve of the optical lens 10 of the thirteenth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 55a, Fig. 55b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is The temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 56 is a schematic diagram of a part of the structure of the optical lens 10 according to the fourteenth embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses, and the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, the object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and the object side and the image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial position is convex;
  • the supplementary lens 16 is a negative power lens, and its object side and image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, its object side has no inflection point, and its object side is concave. It is concave at the paraxial position, and there is at least one inflection point on the image side surface, and the image measuring surface is convex at the paraxial position.
  • the second lens 12 is a glass lens, and the other lenses (including the first lens 11 , the third lens 13 , the fourth lens 14 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • the optical lens 10 provided in this embodiment has an F# value of 1.5, an overall optical length TTL of 14 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can simultaneously have a large Aperture, large viewing angle, large image height (with high resolution) and a small optical length.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and image side of each lens need to be matched to obtain Optical lens 10 with optical parameters in Table 40.
  • Table 41 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application.
  • Table 42 shows the optical lens in this embodiment. Surface coefficient of each lens in 10.
  • the object side surface and the image side surface of each lens are both aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 42 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the vector height of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 57-59c are characterization diagrams of the optical performance of the optical lens 10 according to the fourteenth embodiment.
  • FIG. 57 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the fourteenth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 57 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters. It can be seen from FIG. 57 that in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 58 shows the incident angle curve of the chief ray of the optical lens 10 according to the fourteenth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Figure 58 is used to characterize the curve change of the chief ray incident angle at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 38.8°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 59a is a temperature-drift modulation contrast curve of the optical lens 10 of the fourteenth embodiment at normal temperature (22°C);
  • Fig. 59b is a temperature-drift modulation contrast curve of the optical lens 10 of the fourteenth embodiment at -30°C;
  • FIG. 59c is a temperature-drift modulation contrast curve of the optical lens 10 of the fourteenth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 59a, Fig. 59b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 60 is a schematic diagram showing a partial structure of the optical lens 10 according to the fifteenth embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses.
  • the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, the object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and the object side and the image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial position is convex;
  • the supplementary lens 16 is a negative power lens, and its object side and image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, its object side has no inflection point, and its object side is concave. It is concave at the paraxial position, and there is at least one inflection point on the image side surface, and the image measuring surface is convex at the paraxial position.
  • the second lens 12 is a glass lens, and the other lenses (including the first lens 11 , the third lens 13 , the fourth lens 14 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • the optical lens 10 provided in this embodiment has an F# value of 2.0, an overall optical length TTL of 10 mm, an IH of 9.5 mm, and a FOV of 94°, that is, the optical lens 10 of this embodiment can simultaneously have a large Characteristics of aperture, large viewing angle, large image height (with high resolution) and small optical length.
  • the optical lens 10 of the present embodiment has a smaller total optical length, and can be more suitable for use in small electronic devices.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with the optical parameters in Table 43.
  • Table 44 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application.
  • Table 45 shows the optical lens in this embodiment. Surface coefficient of each lens in 10.
  • Table 44 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the fifteenth embodiment
  • the object side surface and the image side surface of each lens are aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 45 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the vector height of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 61-63c are characterization diagrams of the optical performance of the optical lens 10 according to the fifteenth embodiment.
  • FIG. 61 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the fifteenth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 61 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters. It can be seen from FIG. 61 that in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 62 shows the incident angle curve of the chief ray of the optical lens 10 according to the fifteenth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Figure 62 is used to characterize the curve change of the chief ray incident angle at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 39.0°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 63a is a temperature-drift modulation contrast curve of the optical lens 10 of the fifteenth embodiment at normal temperature (22°C);
  • Fig. 63b is a temperature-drift modulation contrast curve of the optical lens 10 of the fifteenth embodiment at -30°C;
  • FIG. 63c is a temperature-drift modulation contrast curve of the optical lens 10 of the fifteenth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 63a, Fig. 63b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is The temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 64 is a schematic diagram showing a partial structure of the optical lens 10 according to the sixteenth embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses.
  • the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, the object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and the object side and the image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial position is convex;
  • the supplementary lens 16 is a negative power lens, and its object side and image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, its object side has no inflection point, and its object side is concave. It is concave at the paraxial position, and there is at least one inflection point on the image side surface, and the image measuring surface is convex at the paraxial position.
  • the second lens 12 is a glass lens, and the other lenses (including the first lens 11 , the third lens 13 , the fourth lens 14 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • the optical lens 10 provided in this embodiment has an F# value of 2.0, an overall optical length TTL of 7 mm, an IH of 4.6 mm, and a FOV of 44°, that is, the optical lens 10 of this embodiment can simultaneously have a large Aperture, large viewing angle, large image height (with high resolution) and a small optical length.
  • the optical lens 10 of the present embodiment has a smaller total optical length, and can be more suitable for use in small electronic devices.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens and the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with optical parameters in Table 46.
  • Table 47 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application.
  • Table 48 shows the optical lens in this embodiment. Surface coefficient of each lens in 10.
  • Table 47 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the sixteenth embodiment
  • the object side surface and the image side surface of each lens are aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 48 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the sag of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 65-67c are characterization diagrams of the optical performance of the optical lens 10 according to the sixteenth embodiment.
  • FIG. 65 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the sixteenth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 65 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters. It can be seen from FIG. 65 that in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 66 shows the incident angle curve of the chief ray of the optical lens 10 according to the sixteenth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Figure 66 is used to characterize the curve change of the chief ray incident angle at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 27.4°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 67a is a temperature-drift modulation contrast curve of the optical lens 10 of the sixteenth embodiment at normal temperature (22°C);
  • Fig. 67b is a temperature-drift modulation contrast curve of the optical lens 10 of the sixteenth embodiment at -30°C;
  • FIG. 67c is a temperature-drift modulation contrast curve of the optical lens 10 of the sixteenth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 67a, Fig. 67b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is The temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 68 is a schematic diagram showing a partial structure of the optical lens 10 according to the seventeenth embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses, and the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, the object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and the object side and the image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial position is convex;
  • the supplementary lens 16 is a negative power lens, and its object side and image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, its object side has no inflection point, and its object side is concave. It is concave at the paraxial position, and there is at least one inflection point on the image side surface, and the image measuring surface is convex at the paraxial position.
  • the second lens 12 is a glass lens, and the other lenses (including the first lens 11 , the third lens 13 , the fourth lens 14 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • the optical lens 10 provided in this embodiment has an F# value of 2.0, an overall optical length TTL of 7 mm, an IH of 4.6 mm, and a FOV of 44°, that is, the optical lens 10 of this embodiment can simultaneously have a large Aperture, large viewing angle, large image height (with high resolution) and a small optical length.
  • the optical lens 10 of the present embodiment has a smaller total optical length, and can be more suitable for use in small electronic devices.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with optical parameters in Table 49.
  • Table 50 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application, and Table 51 shows the optical lens in this embodiment.
  • the object side surface and the image side surface of each lens are aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 51 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the sag of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 69-71c are characterization diagrams of the optical performance of the optical lens 10 according to the seventeenth embodiment.
  • FIG. 69 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the seventeenth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of Fig. 69 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters. It can be seen from FIG. 69 that in this embodiment, the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 70 shows the incident angle curve of the chief ray of the optical lens 10 according to the seventeenth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Figure 70 is used to characterize the curve change of the chief ray incident angle at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 37.6°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 71a is a temperature-drift modulation contrast curve of the optical lens 10 of the seventeenth embodiment at normal temperature (22°C);
  • Fig. 71b is a temperature-drift modulation contrast curve of the optical lens 10 of the seventeenth embodiment at -30°C;
  • FIG. 71c is a temperature-drift modulation contrast curve of the optical lens 10 of the seventeenth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from FIGS.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.
  • FIG. 72 is a schematic diagram showing a partial structure of the optical lens 10 according to the eighteenth embodiment of the present application.
  • the optical lens 10 is a six-piece lens, including six lenses, and the six lenses are, from the object side to the image side, a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, The supplementary lens 16 and the fifth lens 15 .
  • the first lens 11 is a negative refractive power lens, the object side is concave at the paraxial position, and the image side is concave at the paraxial position;
  • the second lens 12 is a positive refractive power lens, and the object side and the image side are at the paraxial position.
  • the third lens 13 is a negative power lens, and its object side is convex at the paraxial position, and the image side is concave at the paraxial position;
  • the fourth lens 14 is a positive power lens, and its object side is at the image side at The paraxial position is convex;
  • the supplementary lens 16 is a negative power lens, and its object side and image side are concave at the paraxial position;
  • the fifth lens 15 is an M-shaped lens, its object side has no inflection point, and its object side is concave. It is concave at the paraxial position, and there is at least one inflection point on the image side surface, and the image measuring surface is convex at the paraxial position.
  • the second lens 12 is a glass lens, and the other lenses (including the first lens 11 , the third lens 13 , the fourth lens 14 , the supplementary lens 16 , and the fifth lens 15 ) are all plastic lenses.
  • the optical lens 10 provided in this embodiment has an F# value of 2.0, an overall optical length TTL of 7 mm, an IH of 4.6 mm, and a FOV of 44°, that is, the optical lens 10 of this embodiment can simultaneously have a large Characteristics of aperture, large viewing angle, large image height (with high resolution) and small optical length.
  • the optical lens 10 of the present embodiment has a smaller total optical length, and can be more suitable for use in small electronic devices.
  • the parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens, as well as the surface coefficients of the object side and image side of each lens need to be matched, so as to obtain Optical lens 10 with optical parameters in Table 52.
  • Table 53 shows parameters such as the radius of curvature, thickness, refractive index, and Abbe number of each lens in the optical lens 10 in the embodiment of the present application.
  • Table 54 shows the optical lens in this embodiment. Surface coefficient of each lens in 10.
  • Table 53 The curvature radius, thickness, refractive index, and Abbe number of each lens in the optical lens 10 of the eighteenth embodiment
  • the object side surface and the image side surface of each lens are aspherical surfaces, and the surface coefficients and the surface coefficients are aspherical surface coefficients.
  • Table 54 shows the surface coefficients of each lens in the optical lens 10 in this embodiment.
  • the surface shapes of each of the first lens 11 to the fifth lens 15 are aspherical, which can be defined by the following aspherical formula:
  • z is the sag of the aspheric surface
  • r is the radial coordinate of the aspheric surface, that is, the distance from a point on the aspheric surface to the optical axis
  • c is the spherical curvature of the aspherical vertex
  • c is the spherical curvature of the aspherical vertex
  • K is the quadratic Surface constants
  • a4, a6, a8, a10, a12, a14, a16, a18, a20 are aspheric coefficients.
  • 73-75c are characterization diagrams of the optical performance of the optical lens 10 according to the eighteenth embodiment.
  • FIG. 73 is a schematic diagram of axial chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm respectively passes through the optical lens 10 of the eighteenth embodiment. It represents the focal depth positions of the light of different wavelengths on the image side of the optical lens 10 after passing through the optical lens 10 .
  • the ordinate of FIG. 73 represents the normalized pupil coordinates, and the abscissa represents the aberration in the axial direction, in millimeters.
  • the axial aberration is controlled within a small range, and the axial chromatic aberration of the optical lens 10 is well corrected.
  • FIG. 74 shows the incident angle curve of the chief ray of the optical lens 10 according to the eighteenth embodiment.
  • the abscissa represents the image height (IH), in millimeters (mm); the ordinate represents the chief ray incident angle (CRA), in degrees (°).
  • Figure 74 is used to characterize the curve change of the chief ray incident angle at different image heights.
  • the maximum principal ray incident angle of the optical lens 10 is 28.1°, and the optical lens 10 of this embodiment can be adapted to a detector with a large principal ray incident angle.
  • Fig. 75a is a temperature-drift modulation contrast curve of the optical lens 10 of the eighteenth embodiment at normal temperature (22°C);
  • Fig. 75b is a temperature-drift modulation contrast curve of the optical lens 10 of the eighteenth embodiment at -30°C;
  • FIG. 75c is a temperature-drift modulation contrast curve of the optical lens 10 of the eighteenth embodiment at +70°C.
  • the abscissa is the spatial frequency, and the unit is: lp/mm.
  • the ordinate is the modulation contrast MTF.
  • Each line in the figure represents the relationship between modulation contrast and spatial frequency at different image height positions. It can be seen from Fig. 75a, Fig. 75b, Fig.
  • the modulation contrast of the optical lens 10 is basically the same at different temperatures, that is, the optical lens 10 of this embodiment can image clearly under wide temperature conditions, that is, the optical lens 10 is
  • the temperature drift is smaller in a larger temperature variation range, so the optical lens 10 of this embodiment can have better imaging effects under different temperatures.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

L'invention concerne un objectif optique, un module de dispositif de prise de vues et un dispositif électronique. Une première lentille de l'objectif optique a une puissance focale négative, une deuxième lentille a une puissance focale positive, une troisième lentille a une puissance focale, une quatrième lentille a une puissance focale positive, une cinquième lentille a une puissance focale négative et est une lentille en forme de M et au moins l'une d'une face côté objet et d'une face côté image de la cinquième lentille a au moins un point d'inflexion. Au moyen de l'ajustement mutuel des lentilles ayant des structures différentes et des puissances focales différentes, l'objectif optique ayant simultanément des propriétés telles qu'une valeur F# de petite ouverture, un grand angle d'incidence de lumière principal, un grand angle de champ de vision et une petite longueur de piste totale peut être obtenu, de telle sorte que l'objectif optique peut satisfaire divers scénarios d'utilisation et diverses exigences d'utilisation.
PCT/CN2021/098725 2020-06-30 2021-06-07 Objectif optique, module de dispositif de prise de vues et dispositif électronique WO2022001589A1 (fr)

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