WO2022174724A1 - 光学镜头、摄像头模组和电子设备 - Google Patents

光学镜头、摄像头模组和电子设备 Download PDF

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Publication number
WO2022174724A1
WO2022174724A1 PCT/CN2022/073773 CN2022073773W WO2022174724A1 WO 2022174724 A1 WO2022174724 A1 WO 2022174724A1 CN 2022073773 W CN2022073773 W CN 2022073773W WO 2022174724 A1 WO2022174724 A1 WO 2022174724A1
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WIPO (PCT)
Prior art keywords
lens
optical lens
optical
refractive power
image
Prior art date
Application number
PCT/CN2022/073773
Other languages
English (en)
French (fr)
Inventor
张凯元
曼森·丹尼尔
徐运强
肖流长
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to US18/547,116 priority Critical patent/US20240134165A1/en
Priority to EP22755497.9A priority patent/EP4279973A1/en
Publication of WO2022174724A1 publication Critical patent/WO2022174724A1/zh

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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
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/04—Reversed telephoto objectives
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/95—Computational photography systems, e.g. light-field imaging systems
    • H04N23/958—Computational photography systems, e.g. light-field imaging systems for extended depth of field imaging

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 imaging lens of the photographing equipment As the application of photographing equipment becomes more and more popular, the requirements for the imaging lens of the photographing equipment are getting higher and higher.
  • the imaging lens is required to have a large field of view.
  • the current wide-angle lens or ultra-wide-angle lens can meet the requirements of large field of view imaging.
  • the larger the field of view of the imaging lens the more severe the distortion of the captured image.
  • Embodiments of the present application provide an optical lens capable of making a captured image with less distortion, a camera module including the optical lens, and an electronic device including the camera module.
  • an optical lens capable of making a captured image with less distortion
  • a camera module including the optical lens and an electronic device including the camera module.
  • the present application by optimizing the number of lenses in the optical lens and the lens parameters, it is possible to ensure that the optical lens can have a larger field of view, and the imaging of the optical lens has less distortion.
  • an optical lens in a first aspect, includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from the object side to the image side;
  • the first lens is a lens that bends to the image side , the first lens has negative refractive power;
  • each of the first to seventh lenses includes an object side facing the object side and an image side facing the image side, and the sixth lens and the seventh lens have an object side and an image side are free-form surfaces, and the object side surface of the sixth lens and/or the seventh lens has at least one inflection point, and the optical lens satisfies the following relationship:
  • FOV is the field of view of the optical lens
  • DIST is the distortion parameter of the imaging of the optical lens.
  • the optical lens is used as the boundary, the side where the subject is located is the object side, and the surface of the lens facing the object side can be called the object side; with the optical lens as the boundary, the image of the subject is The side on which it is located is the image side, and the surface of the lens facing the image side can be called the image side.
  • the optical lens includes seven lenses.
  • the optimal coordination of the parameters of each lens is realized, so that the optical lens can ensure that the imaging of the optical lens has a large field of view. less distortion.
  • the first lens is a lens that is curved toward the image side, and the first lens is a lens with negative refractive power, so that scenes in a larger field of view can enter the optical lens, improving the The field of view of the optical lens.
  • the object side surface of the sixth lens and/or the seventh lens has at least one inflection point, so that the sixth lens and/or the seventh lens can better adjust optical distortion and eliminate aberrations , so that the distortion of the optical lens can be further reduced, so as to ensure that the optical lens can have a large field of view, but also have a small distortion and achieve a better optical effect.
  • the FOV of the optical lens is greater than or equal to 125°, and
  • the object side surface of the first lens has at least one inflection point, which can further effectively improve the optical incident angle of the optical lens, thereby increasing the field of view of the optical lens.
  • the first lens having at least one inflection point on the side of the object can have a better distortion correction effect, thereby further reducing the distortion of the optical lens and improving the optical effect of the optical lens.
  • the optical lens satisfies the following relationship:
  • D1 is the aperture size of the first lens
  • IMH is the diagonal length of the effective pixel area on the imaging surface of the optical lens.
  • the aperture size D1 of the first lens and the imaging image height IMH of the optical lens satisfy the above relationship, that is, it can ensure that the aperture size of the first lens is relatively similar to the imaging image height of the optical lens, avoiding the first The aperture of the lens is too small to ensure that the optical lens has a better field of view. In addition, it can also avoid that the imaging image height of the optical lens is too small, thereby ensuring that the imaging of the optical lens has high resolution.
  • the optical lens satisfies the following relationship:
  • F# is the aperture F value of the optical lens.
  • the optical lens when the aperture F value of the optical lens satisfies the above relationship, the optical lens can have a sufficient amount of incident light, thereby ensuring that the imaging of the optical lens can have a good optical effect.
  • the optical lens satisfies the following relationship: 0.8 ⁇
  • TTL is the total optical length of the optical lens
  • IMH is the diagonal length of the effective pixel area on the imaging surface of the optical lens.
  • the optical lens satisfies the following relationship:
  • f is the focal length of the optical lens
  • TTL is the total optical length of the optical lens.
  • the optical lens satisfies the following relationship:
  • f1 is the focal length of the first lens; f is the focal length of the optical lens.
  • the focal length of the first lens and the focal length of the optical lens satisfy the above-mentioned relational expressions, and the focal power of the first lens can be reasonably distributed, so that the first lens can play a better role in increasing the field of view , and cooperate to correct the aberration of the optical lens, reduce the generation of distortion, and improve the imaging quality of the optical lens.
  • the optical lens satisfies the following relationship:
  • f7 is the focal length of the seventh lens
  • f is the focal length of the optical lens.
  • the focal length of the seventh lens and the focal length of the optical lens satisfy the above relationship, and the focal length of the seventh lens can be reasonably allocated to correct the aberration of the optical lens and reduce the occurrence of distortion. Improve the imaging quality of optical lenses.
  • each of the first lens to the seventh lens has a refractive power; the combined refractive power of the second lens and the third lens is positive refractive power, and the combined refractive power of the fourth lens and the fifth lens is is negative refractive power, and the combined refractive power of the sixth lens and the seventh lens is negative refractive power.
  • each lens has optical power, so as to ensure that each lens can play a certain optical effect, so as to ensure that the optical effect required by the optical lens can be achieved, and at the same time, the number of lenses of the optical lens can be reduced as much as possible. , reducing the total optical length of the optical lens, thereby realizing the miniaturization of the optical lens.
  • the combined refractive power of the second lens and the third lens is positive refractive power
  • the combined refractive power of the fourth lens and the fifth lens is negative refractive power
  • the sixth lens and the seventh lens are negative refractive power.
  • the combined power of the lens is negative power, so as to realize the optimal cooperation between each lens and reduce the distortion of the optical lens.
  • the combined power of the fourth lens and the fifth lens is negative power
  • the combined power of the sixth lens and the seventh lens is negative power, which can expand the beam of light to ensure
  • the optical lens has a large image height, so that the optical lens can match the photosensitive element with a large incident angle of the chief ray, and the imaging resolution of the optical lens is improved.
  • the fourth lens and the seventh lens are both negative refractive powers, and the fourth lens and the seventh lens can diffuse light, so as to ensure that the optical lens has a larger image height, so that the The optical lens can match the photosensitive element with a large incident angle of the chief ray to improve the imaging resolution of the optical lens.
  • the fourth lens and the seventh lens can cooperate with other lenses to correct the chromatic aberration and distortion of the optical lens, so that the optical lens can achieve better optical effects.
  • the present application further 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 light is projected to the photosensitive element after passing through the optical lens.
  • the optical image obtained after passing through the optical lens is converted into an electrical signal by the photosensitive element, and then subsequent steps such as image processing are performed, so that an image with better imaging quality can be obtained.
  • the optical lens of the present application can ensure that in the case of having a larger field of view, the imaging distortion of the optical lens can also be small, so as to obtain a better imaging effect. Therefore, in the present application, the camera module including the above-mentioned optical lens can also capture images with a large angle of view and small distortion, that is, the camera module can have a good imaging effect.
  • the present application also provides an electronic device, the electronic device includes an image processor and the above-mentioned camera module, the image processor is connected in communication with the camera module, and the camera module is used for acquiring image data and inputting the image data to the camera module.
  • the image processor is used to process the image data output therein.
  • the image data of the camera module is processed by an image processor, so as to obtain better captured pictures or images.
  • the camera module of the present application can capture images with a large angle of view and small distortion, and can have a good imaging effect. Therefore, the electronic device of the present application can capture imaging with a large field of view and small distortion, and can have a good imaging effect.
  • FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of an electronic device according to another embodiment of the present application.
  • FIG. 3 is a schematic diagram of the imaging principle of the electronic device shown in FIG. 2 .
  • FIG. 4 is a schematic structural diagram of a camera module according to some embodiments of the present application.
  • FIG. 5 is a schematic cross-sectional view of the seventh lens shown in FIG. 3 .
  • FIG. 6 is a schematic cross-sectional view of a plurality of lenses of the optical lens according to the first embodiment of the present application.
  • FIG. 7 is a spherical chromatic aberration diagram of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the optical lens of the first embodiment.
  • FIG. 8 is an astigmatic field curve diagram of light with a wavelength of 555 nm after passing through the optical lens of the first embodiment.
  • FIG. 9 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens of the first embodiment.
  • FIG. 10 is a schematic cross-sectional view of a plurality of lenses of an optical lens according to a second embodiment of the present application.
  • FIG. 11 is a spherical chromatic aberration diagram of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passing through the optical lens of the second embodiment.
  • FIG. 12 is an astigmatic field curve diagram of light with a wavelength of 555 nm after passing through the optical lens of the second embodiment.
  • FIG. 13 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens of the second embodiment.
  • FIG. 14 is a schematic cross-sectional view of a plurality of lenses of an optical lens according to a third embodiment of the present application.
  • 15 is a spherical chromatic aberration diagram of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passing through the optical lens of the third embodiment.
  • FIG. 16 is an astigmatic field curve diagram of light with a wavelength of 555 nm passing through the optical lens of the third embodiment.
  • FIG. 17 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens of the third embodiment.
  • FIG. 18 is a schematic cross-sectional view of a plurality of lenses of an optical lens according to a fourth embodiment of the present application.
  • FIG. 19 is a spherical chromatic aberration diagram of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the optical lens of the fourth embodiment.
  • FIG. 20 is a graph of the astigmatic field curve after light with a wavelength of 555 nm passes through the optical lens of the fourth embodiment.
  • FIG. 21 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens of the fourth embodiment.
  • FIG. 22 is a schematic cross-sectional view of a plurality of lenses of an optical lens according to a fifth embodiment of the present application.
  • FIG. 23 is a spherical chromatic aberration diagram of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the optical lens of the fifth embodiment.
  • FIG. 24 is an astigmatic field curve diagram of light with a wavelength of 555 nm after passing through the optical lens of the fifth embodiment.
  • FIG. 25 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens of the fifth embodiment.
  • 26 is a schematic cross-sectional view of a plurality of lenses of an optical lens according to a sixth embodiment of the present application.
  • FIG. 27 is a spherical chromatic aberration diagram of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passing through the optical lens of the sixth embodiment.
  • FIG. 28 is a graph of the astigmatic field curve of light with a wavelength of 555 nm after passing through the optical lens of the sixth embodiment.
  • FIG. 29 is a distortion diagram of light with a wavelength of 555 nm passing through the optical lens of the sixth embodiment.
  • Focal length (focal length, f for short), also known as focal length, is a measure of the concentration or divergence of light in an optical system. The vertical distance from the optical center of the lens group to the focal plane.
  • Aperture is a device used to control the amount of light passing through the lens to the photosensitive element.
  • the aperture size is expressed in F-number/F-number.
  • Aperture F value (F#) 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 is, the more light will enter in the same unit time; the larger the aperture F value, the smaller the depth of field, and the background content of the photo will be blurred.
  • 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 refractive power also known as negative refractive 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 end of the optical lens away from the imaging surface to the imaging surface, which is the main factor forming the height of the camera.
  • Abbe number namely dispersion coefficient
  • dispersion coefficient is the difference ratio of refractive index of optical material at different wavelengths, which represents the degree of material dispersion.
  • 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.
  • Object side with the optical lens as the boundary, the side where the scene to be imaged is the object side.
  • the side where the image of the scene to be imaged is located is the image side.
  • Object side the surface of the lens facing the object side is called the object side.
  • Image side the surface of the lens facing the image side is called the image side.
  • Distortion is the difference between where points appear in an image and where they would be in an ideal system.
  • the field of view refers to the angle formed by the lens of the optical instrument as the vertex and the angle formed by the two edges of the maximum range that the object image of the object to be measured can pass through the lens.
  • a free-form surface refers to a surface that cannot be composed of elementary analytical surfaces, but is composed of curved surfaces that change freely in complex ways, the so-called free-form curved surfaces.
  • the present application provides an electronic device, which can be a mobile phone, a tablet, a computer, a video camera, a camera, or other electronic device with a photographing or video recording function.
  • 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 mobile phone.
  • the electronic device 1000 may be a device with a photographing function in other forms, such as a tablet or a camera.
  • the electronic device 1000 includes a camera module 100 and an image processor 200 communicatively connected to the camera module 100 .
  • the camera 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 camera module 100 and the image processor 200 may include data transmission through electrical connection such as wiring connection, or may also be realized through optical cable connection or wireless transmission and other methods capable of 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 or store it in the memory.
  • the image processor 200 may be an image processing chip or a digital signal processing (digital signal processing, DSP) chip.
  • the camera module 100 is disposed on the back of the electronic device 1000 and is a rear camera of the electronic device 1000 . It can be understood that, in some embodiments, the camera module 100 may also be disposed on the front of the electronic device 1000 as a front camera of the electronic device 1000 . Both the front camera and the rear camera can be used for selfies, and can also be used by the photographer to capture other subjects.
  • FIG. 2 is a schematic structural diagram of an electronic device 1000 according to another embodiment of the present application.
  • the electronic device 1000 has two rear cameras, and the two camera modules 100 are both connected to the image processor 200 for communication, so that the image processor 200 realizes the connection between the two camera modules 100 The image data is processed to get a better shot or image.
  • the installation position of the camera module 100 of the electronic device 1000 in the embodiment shown in FIG. 1 is only schematic, and in some other embodiments, the camera module 100 may also be installed at other positions on the mobile phone.
  • the camera module 100 can be installed in the upper middle or upper right corner of the back of the mobile phone; alternatively, the camera module 100 can also be installed not on the main body of the mobile phone, but on a part that is movable or rotatable relative to the mobile phone, for example, the part can be Extend, retract or rotate from the main body of the phone.
  • This application does not make any limitation on the installation position of the camera module 100 .
  • FIG. 2 is a schematic structural diagram of an electronic device 1000 according to another embodiment of the present application
  • FIG. 3 is a schematic diagram of an imaging principle of the electronic device 1000 shown in FIG. 2
  • the electronic device 1000 further includes an analog-to-digital converter (also referred to as an A/D converter) 300 .
  • the analog-to-digital converter 300 is connected between the camera module 100 and the image processor 200 .
  • the analog-to-digital converter 300 is used to convert the analog image signal generated by the camera module 100 into a digital image signal and transmit it to the image processor 200, and then process the digital image signal through the image processor 200, and finally through the display screen or display.
  • Image or video display is an analog-to-digital converter
  • 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. image can be retrieved from storage at any time and displayed on the display (see Figure 2).
  • 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 structural diagram of an embodiment of the present application, and the positions and structures of the camera module 100 , the image processor 200 , the analog-to-digital converter 300 , and the memory 400 shown therein are only schematic.
  • the camera 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 image side of the optical lens 10 refers to the imaging side of the optical lens 10 close to the scene to be imaged.
  • the camera module 100 is working, the scene to be imaged is imaged on the photosensitive element 20 after passing through the optical lens 10 .
  • the working principle of the camera module 100 is as follows: the light L reflected by the scene to be imaged 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
  • the converted analog image signal S1 is transmitted to the analog-to-digital converter 300 to be converted into a digital image signal S2 by the analog-to-digital converter 300 to the image processor 200 .
  • the photosensitive element 20 is a semiconductor chip with hundreds of thousands to millions of photodiodes on the surface. When irradiated by light, electric charges will be generated, thereby completing the conversion of optical signals into electrical signals.
  • the photosensitive element 20 can be any device capable of converting optical signals into electrical signals.
  • the photosensitive element 20 may be a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS).
  • the optical lens 10 affects the imaging quality and imaging effect.
  • the optical lens 10 includes a plurality of lenses arranged from the object side to the image side, which mainly use the refraction principle of the lenses to perform imaging. Specifically, the light of the object to be imaged forms a clear image on the focal plane through the optical lens 10, and records the image of the scene through the photosensitive element 20 located on the focal plane. Adjacent lenses may have an air gap, or they may be arranged in close contact. The main functions of each lens are different, and the best image quality can be obtained through the cooperation between different lenses.
  • the optical lens 10 further includes an infrared filter 30 , and the infrared filter 30 is located between the photosensitive element 20 and the lens of the optical lens 10 .
  • the light refracted by each lens of 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 30 can filter out the unnecessary light projected on the photosensitive element 20, prevent the photosensitive element 20 from producing false colors or ripples, so as to improve its effective resolution and color reproduction, and can avoid some specific light from the outside. Damage to the photosensitive element 20 protects the photosensitive element 20 .
  • the optical lens 10 further includes a lens barrel 10a, a plurality of lenses of the optical lens 10 are fixed in the lens barrel 10a, and the plurality of lenses fixed in the lens barrel 10a are coaxially arranged.
  • a plurality of lenses are fixed in the lens barrel 10a, the distance between the lenses is fixed, and the optical lens 10 is a lens with a fixed focal length.
  • the multiple lenses of the optical lens 10 can be relatively moved in the lens barrel 10a to change the distance between the multiple lenses, so that the focal length of the optical lens 10 can be changed, and the optical lens 10 can be focusing.
  • the infrared filter 30 may be fixed to the end of the lens barrel 10a of the optical lens 10 facing the image side.
  • the camera module 100 further includes a holder 50 and a circuit board 60 and other structures.
  • the fixed base 50 includes a receiving cavity.
  • One end of the optical lens 10 is installed in the receiving cavity of the fixed base 50 and is fixed with the cavity wall of the receiving cavity.
  • the optical lens 10 is fixed relative to the fixed base 50 and cannot move relative to the fixed base 50 .
  • the circuit board 60 is fixed on the side of the fixing base 50 away from the optical lens 10 .
  • the circuit board 60 is used to transmit electrical signals.
  • the circuit board 60 can be a flexible printed circuit (FPC) or a printed circuit board (PCB), wherein the FPC can be a single-sided flexible board, a double-sided flexible board, a multi-layer flexible board, a rigid-flex board Or flexible circuit boards with mixed structures, etc.
  • FPC flexible printed circuit
  • PCB printed circuit board
  • the infrared filter 30 can be fixed to the cavity wall of the fixing base 50 and located between the optical lens 10 and the circuit board 60 ; or, it can also be supported and fixed above the circuit board 60 by a bracket.
  • the photosensitive element 20 is fixed on the circuit board 60 by bonding or patching.
  • the photosensitive element 20 is located on the image side of the optical lens 10 and is disposed opposite to the optical lens 10 , and the optical image generated by the optical lens 10 can be projected to the photosensitive element 20 .
  • the analog-to-digital converter 300 , the image processor 200 , the memory 400 , etc. are also integrated on the circuit board 60 by bonding or patching, so as to realize the photosensitive element 20 and the analog-to-digital converter 300 through the circuit board 60 . , a communication connection between the image processor 200, the memory 400, and the like.
  • one end of the optical lens 10 is installed in the receiving cavity of 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 .
  • This ensures that when multiple lenses in the optical lens 10 move relatively to change the focal length of the optical lens 10, the optical lens 10 can always image on the photosensitive element 20, ensuring that the camera module 100 can always have a good imaging effect.
  • the cavity wall of the receiving cavity of the fixing base 50 is provided with internal threads
  • the outer wall of the lens barrel 10 a is provided with external threads
  • the lens barrel 10 a is threadedly connected with the fixing base 50 .
  • the lens barrel 10 a By driving the lens barrel 10 a to rotate relative to the fixed base 50 , the lens barrel 10 a moves in the axial direction relative to the fixed base 50 , 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 (for example, the lens barrel 10a and the fixed base 50 are connected by sliding rails), No detailed enumeration is given here.
  • the optical lens 10 includes a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , a fifth lens 15 , and a first lens 11 , a second lens 12 , a fourth lens 14 , a fifth lens 15 , and a third Six lenses 16 and seventh lenses 17 .
  • the first lens 11 , the second lens 12 , the third lens 13 , the fourth lens 14 , the fifth lens 15 , the sixth lens 16 and the seventh lens 17 are all arranged coaxially.
  • each of the optical lenses 10 is a lens with a positive refractive power or a negative refractive power, so as to ensure that each lens can play a certain optical effect, so as to ensure the optical lens 10 needs to achieve.
  • the number of lenses of the optical lens 10 is reduced as much as possible, and the total optical length of the optical lens 10 is reduced, thereby realizing the miniaturization of the optical lens 10 .
  • the flat mirror does not count as a lens of the optical lens 10 of the present application.
  • the plane mirror cannot be counted as the fifth lens 15 in the embodiment of the present application.
  • each lens of the optical lens 10 can bring different optical properties, so that an optical lens with a larger angle of view and smaller imaging distortion can be obtained by combining lenses with different optical properties 10.
  • the first lens 11 is a lens curved toward the image side of the optical lens 10 , and the first lens 11 has a negative refractive power, so that a scene within a larger field of view can enter the optical lens 10 , The field of view of the optical lens 10 is increased.
  • the lens curved to the image side of the optical lens 10 means that the edge of the object side of the lens is closer to the image side of the optical lens 10 than the center of the object side of the lens, and the edge of the image side of the lens is relative to the image side of the lens.
  • the center of the side surface is closer to the image side of the optical lens 10 .
  • the object side surface of the sixth lens 16 and/or the seventh lens 17 has at least one inflection point, so that the sixth lens 16 and/or the seventh lens 17 can better adjust the optical distortion, eliminate the The effect of aberration can further reduce the distortion of the optical lens 10, thereby ensuring that the optical lens 10 can have a large field of view, but also has a small distortion and achieve better optical effects.
  • the inflection point of the object side surface mentioned in this application refers to the inflection point on the contour line where the plane passing through the axis of the lens intersects the object side surface. Therefore, the inflection point mentioned in this application refers to the boundary point between the concave arc and the convex arc of the contour line where the plane passing through the axis of the lens intersects the object side surface.
  • FIG. 5 which is a schematic cross-sectional view of the seventh lens 17 shown in FIG. 3 . 5 is obtained by cutting the seventh lens 17 through the plane of the axis of the seventh lens 17 . Therefore, the free curve 171 in FIG.
  • FIG. 5 is the plane passing through the axis of the seventh lens 17 and the object side of the seventh lens 17 . intersecting contour lines.
  • the FOV of the optical lens 10 is greater than or equal to 125°, and
  • the combined refractive power of the second lens 12 and the third lens 13 is positive refractive power, and the light incident from the first lens 11 can be converged, so as to reduce the loss of light and make the light converge as much as possible
  • the optical lens 10 is transmitted to the photosensitive element 20; the combined refractive power of the fourth lens 14 and the fifth lens 15 is negative refractive power, which can be used to expand the light beam, thereby increasing the amount of light formed in the photosensitive element 20.
  • the image height of the optical lens 10 enables the optical lens 10 to match the photosensitive element with a large incident angle of the chief ray, thereby improving the imaging resolution of the optical lens 10; the combined refractive power of the sixth lens 16 and the seventh lens 17 is negative refractive power , can also be used to expand the beam, thereby further increasing the image height of the image formed on the photosensitive element 20, so that the optical lens 10 can match the photosensitive element with a large incident angle of the chief ray, and further improve the optical lens 10. imaging resolution.
  • the focal length f1 of the first lens 11 of the optical lens 10 and the focal length f of the optical lens 10 satisfy: 1.5 ⁇
  • the optical power of the first lens 11 can be reasonably distributed, so that the first lens 11 can play the role of The function of increasing the angle of view is better, and it can better cooperate with other lenses to correct the aberration of the optical lens 10 , reduce the generation of distortion, and improve the imaging quality of the optical lens 10 .
  • the object side surface of the first lens 11 also has at least one inflection point, which can further effectively improve the optical incident angle of the optical lens 10 , thereby increasing the field of view of the optical lens 10 .
  • the first lens 11 having at least one inflection point on the object side can have a better distortion correction effect, thereby further reducing the distortion of the optical lens 10 and improving the optical effect of the optical lens 10 .
  • the aperture size D1 of the first lens 11 of the optical lens 10 and the image height IMH of the optical lens 10 satisfy the relationship: 0.5 ⁇
  • the aperture size D1 of the first lens 11 and the imaging image height IMH of the optical lens 10 satisfy the above-mentioned relational expression, that is, it can be ensured that the aperture size of the first lens and the imaging image height of the optical lens 10 are relatively similar. It is avoided that the aperture of the first lens is too small, so as to ensure that the optical lens 10 has a better field of view. In addition, it can also avoid that the imaging image height of the optical lens 10 is too small, thereby ensuring that the imaging of the optical lens 10 has high resolution.
  • the focal length f7 of the seventh lens 17 of the optical lens 10 and the focal length f of the optical lens 10 satisfy: 2.5 ⁇
  • the focal power of the seventh lens 17 can be reasonably distributed, and can better cooperate with other lenses to correct the optical lens 10 aberration, reduce the generation of distortion, and improve the imaging quality of the optical lens 10.
  • both the fourth lens 14 and the seventh lens 17 have negative refractive power.
  • the fourth lens 14 and the seventh lens 17 both have negative refractive power, which can diffuse light, so as to ensure that the optical lens 10 has a larger image height, so that the optical lens 10 can match
  • the photosensitive element with a large incident angle of the chief ray improves the imaging resolution of the optical lens 10 .
  • the fourth lens 14 and the seventh lens 17 can cooperate with other lenses to correct the chromatic aberration and distortion of the optical lens 10 , so that the optical lens 10 can achieve better optical effects.
  • the aperture F value (F#) of the optical lens 10 satisfies the relationship: 1.5 ⁇ F# ⁇ 2.8.
  • the optical lens 10 when the aperture F value of the optical lens 10 satisfies the above relationship, the optical lens 10 can have a sufficient amount of incident light, thereby ensuring that the imaging of the optical lens 10 can have good optical effects.
  • the total optical length TTL of the optical lens 10 and the image height IMH of the optical lens 10 satisfy the relationship: 0.8 ⁇
  • the total optical length TTL of the optical lens 10 and the imaging image height IMH of the optical lens 10 satisfy the above relationship, it can ensure that the imaging of the optical lens 10 has a high resolution, and at the same time, each of the optical lens 10
  • the arrangement of the lenses can be more compact, so that the optical length of the optical lens 10 can be shortened, so that the optical lens 10 can be miniaturized, which is convenient for use in the small electronic device 1000 .
  • the focal length f of the optical lens 10 and the total optical length TTL of the optical lens 10 satisfy the relationship: 0.1 ⁇
  • the focal length f and the total optical length TTL of the optical lens 10 satisfy the above relationship, it can ensure that the arrangement of the lenses of the optical lens 10 can be more compact, and the distance between the lenses of the optical lens 10 and the imaging surface can also be smaller. , so as to ensure that the total optical length of the optical lens 10 can be short, so that the optical lens 10 can be miniaturized, and it is convenient to use in the small electronic device 1000 .
  • 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 axial thickness of the multiple lenses of the optical lens 10 , and it is not easy to manufacture an optical lens structure with a complex shape. Therefore, in some embodiments of the present application, considering the manufacturing cost, efficiency and optical effect, the specific application materials of different lenses are reasonably matched according to needs.
  • FIG. 6 is a schematic cross-sectional view of multiple lenses of the optical lens 10 according to the first embodiment of the present application.
  • the optical lens 10 has seven lenses, which are a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , a fifth lens 15 , a sixth lens 16 and a seventh lens 17 .
  • the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16 and the seventh lens 17 are arranged in order from the object side to the image side, and each lens is coaxial set up.
  • the first lens 11 has negative refractive power
  • the second lens 12 has positive refractive power
  • the third lens 13 has positive refractive power
  • the fourth lens 14 has negative refractive power
  • the fifth lens 15 has negative refractive power
  • the sixth lens 16 has positive refractive power
  • the seventh lens 17 has negative refractive power.
  • the materials of the first lens 11 to the seventh lens 17 are all optical plastics, so that the manufacture of each lens of the optical lens 10 is relatively simple and convenient, and the manufacturing cost of the optical lens 10 can be reduced.
  • the design parameters of the optical lens 10 according to the first embodiment of the present application are as follows in Table 1.
  • S1 represents the object side of the first lens 11
  • S2 represents the image side of the first lens 11
  • S3 represents the object side of the second lens 12
  • S4 represents the image side of the second lens 12
  • S5 represents the object side of the third lens 13 Side
  • S6 represents the image side of the third lens 13
  • S7 represents the object side of the fourth lens 14
  • S8 represents the image side of the fourth lens 14
  • S9 represents the object side of the fifth lens
  • S10 represents the image of the fifth lens 15 Side
  • S11 represents the object side of the sixth lens 16
  • S12 represents the image side of the sixth lens 16
  • S13 represents the object side of the seventh lens 17
  • S14 represents the image side of the seventh lens 17
  • S15 represents the optical filter 30
  • the object side, S16 represents the image side of the optical filter 30 .
  • the first lens 11 is a lens that is curved toward the image side of the optical lens 10, and the first lens 11 has a negative refractive power, so that a scene in a larger field of view can enter the optical lens 10, improving the performance of the optical lens 10.
  • the angle of view of the optical lens 10; the combined refractive power of the second lens 12 and the third lens 13 is positive refractive power, which can converge the light incident from the first lens 11 to reduce light loss and make the light converge as much as possible
  • the optical lens 10 is transmitted to the photosensitive element 20; the combined refractive power of the fourth lens 14 and the fifth lens 15 is negative refractive power, which can be used to expand the light beam, thereby increasing the amount of light formed in the photosensitive element 20.
  • the image height of the optical lens 10 enables the optical lens 10 to match the photosensitive element with a large incident angle of the chief ray, thereby improving the imaging resolution of the optical lens 10; the combined refractive power of the sixth lens 16 and the seventh lens 17 is negative refractive power , can also be used to expand the beam, thereby further increasing the image height of the image formed on the photosensitive element 20, so that the optical lens 10 can match the photosensitive element with a large incident angle of the chief ray, and further improve the optical lens 10. imaging resolution.
  • the object sides of the first lens 11 , the sixth lens 16 and the seventh lens 17 all have at least one inflection point, so the first lens 11 , the sixth lens 16 and the seventh lens 17 all have better
  • the functions of adjusting optical distortion and eliminating aberration can further reduce the distortion of the optical lens 10, so as to ensure that the optical lens 10 can have a large field of view, and also have a small distortion, so as to achieve better Optical effect.
  • the surface shapes of the object side surface and the image side surface of each lens of the optical lens 10 are high-order aspheric surfaces, and the high-order aspheric coefficients of each lens can be optimized through the cooperation between the lenses. Effectively correct peripheral aberrations such as astigmatism and distortion, especially peripheral aberrations at large viewing angles are well corrected.
  • Table 2 shows the aspheric coefficients of the optical lens 100 according to the first embodiment of the present application, as shown in Table 2.
  • A4, A6, A8, A10, A12, A14, A16, A20, A22, A24, A26, A28, A30 are aspheric coefficients. It should be noted that in this application, symbols such as A4, A6, A8, A10, A12, A14, A16, A20, A22, A24, A26, A28, and A30 have the same meaning, and will not be repeated when they appear again in the future. Repeat. It should be noted that each parameter in the table is expressed in scientific notation. For example, 4.748E-01 refers to 4.748 ⁇ 10 -1 ; -6.324E-10 refers to -6.324 ⁇ 10 -10 .
  • 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
  • A2, A4, A6, A8, A10,..., A26, A28, A30 is the aspheric coefficient.
  • Each lens of the optical lens 10 of the present embodiment can be designed and obtained by substituting the parameters in Table 2 into the above formula.
  • Each lens of the optical lens 10 of the present embodiment is designed according to the parameters in the above-mentioned Tables 1 and 2, so that the optical lens 10 of the present embodiment can have the basic parameters shown in Table 3 below.
  • f1 represents the focal length of the first mirror 11
  • f2 represents the focal length of the second mirror 12
  • f3 represents the focal length of the third mirror 13
  • f4 represents the focal length of the fourth mirror 14
  • f5 represents the focal length of the fifth mirror 15
  • f6 represents the focal length of the first mirror 15.
  • the focal length of the six lenses 16, f7 represents the focal length of the seventh lens 17, f represents the focal length of the optical lens 10, TTL represents the total optical length of the optical lens 10, IMH represents the diagonal length of the effective pixel area on the photosensitive element 20, and FOV represents the optical lens
  • the field of view angle of 10 10 is the aperture F value of the optical lens 10
  • DIST represents the maximum optical distortion of the optical lens 10 in the entire field of view
  • D1 represents the aperture of the first lens 11. It should be noted that in this application, symbols such as f1, f2, f3, f4, f5, f6, f7, f, TTL, FOV, IMH, DIST, and D1 have the same meaning, and will not be repeated when they appear again in the future. Repeat.
  • the maximum angle of view of the optical lens 10 is 140°, and the maximum optical distortion
  • (unit is %) 17.6% is guaranteed within the entire field of view.
  • the optical lens 10 in this manner can also have smaller optical distortion under the condition of having a larger field of view, so as to obtain a better imaging effect.
  • the aperture value F# of the optical lens 10 in this embodiment is 2.193, that is, the aperture value F# of the optical lens 10 in this embodiment is small, so that the optical lens 10 can be used well under low illumination.
  • the ratio of the aperture D1 of the first lens 11 to the diagonal length of the effective pixel area on the imaging surface of the optical lens 10 is
  • 0.839, that is, the aperture D1 of the first lens 11 and the optical lens 10
  • the difference in the diagonal lengths of the effective pixel areas on the imaging surface is not much different, so as to ensure that the first lens 11 has a larger aperture, so that the optical lens 10 can have a larger field of view, and at the same time, the imaging of the optical lens 10 is also guaranteed. It can be larger, so that the photosensitive element with a large incident angle of the chief ray can be matched, and the imaging resolution of the optical lens 10 can be improved.
  • the ratio between the distance TTL from the object side of the first lens L1 of the system to the imaging surface of the imaging lens on the optical axis and the diagonal length of the effective pixel area on the imaging surface of the system is
  • 1.038.
  • the total optical length TTL of the optical lens 10 is basically the same as the image height IMH of the optical lens 10 , so that the imaging of the optical lens 10 can have higher resolution, and the arrangement of the lenses of the optical lens 10 It can be more compact, so that the optical length of the optical lens 10 can be shortened, so that the optical lens 10 can be miniaturized, and it is convenient to be used in a small electronic device 1000 .
  • 0.213.
  • the distance between the lenses of the optical lens 10 and the imaging surface can also be smaller, so as to ensure that the total optical length of the optical lens 10 can be shorter.
  • the optical lens 10 can be miniaturized, and it is convenient to be used in a small electronic device 1000 .
  • 7-9 are characterization diagrams of the optical performance of the optical lens 10 of the first embodiment.
  • FIG. 7 shows a spherical chromatic aberration diagram of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passing through the optical lens 10 of the first embodiment.
  • the ordinate of FIG. 7 represents the normalized pupil coordinates, and the abscissa represents the spherical chromatic aberration value, and the unit is millimeter. As can be seen from FIG.
  • the spherical chromatic aberration of light of different wavelength bands after passing through the optical lens 10 is small, that is, the spherical chromatic aberration of the imaging of the optical lens 10 of this embodiment is small, so the The optical lens 10 has better optical imaging effect.
  • FIG. 8 shows an astigmatic field curve after light with a wavelength of 555 nm passes through the optical lens 10 of the first embodiment.
  • the ordinate of FIG. 8 represents the angle of the field of view, and the unit is degree (°), and the unit of the abscissa is the astigmatic field curvature of the optical lens 10 , and the unit is millimeter (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dotted line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • the astigmatic field curvature of the light passing through the optical lens 10 of the present embodiment in both the sagittal direction and the meridional direction is small, that is, the astigmatic field curvature of the image formed by the optical lens 10 of the present embodiment is small.
  • the optical lens 10 in this manner has a better optical imaging effect.
  • FIG. 9 shows a distortion diagram of light with a wavelength of 555 nm passing through the optical lens 10 of the first embodiment.
  • the ordinate of FIG. 9 represents the field of view angle, in degrees (°), and the abscissa is the distortion value of light with a wavelength of 555 nm passing through the optical lens 10 of the first embodiment, in %.
  • the distortion of the light after passing through the optical lens 10 of this embodiment is small, that is, the distortion of the image formed by the optical lens 10 of this embodiment is small, so the optical lens 10 of this embodiment can achieve a larger field of view In the case of angle, it also has less distortion, so it has better optical imaging effect.
  • FIG. 10 is a schematic cross-sectional view of multiple lenses of the optical lens 10 according to the second embodiment of the present application.
  • the optical lens 10 has seven lenses, which are a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , a fifth lens 15 , a sixth lens 16 and a seventh lens 17 .
  • the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16 and the seventh lens 17 are arranged in order from the object side to the image side, and each lens is coaxial set up.
  • the first lens 11 has negative refractive power
  • the second lens 12 has positive refractive power
  • the third lens 13 has positive refractive power
  • the fourth lens 14 has positive refractive power
  • the fifth lens 15 has negative refractive power
  • the third lens 13 has positive refractive power.
  • the six mirrors 16 have positive refractive power
  • the seventh mirror 17 has positive refractive power.
  • the materials of the first lens 11 to the seventh lens 17 are all optical plastics, so that the manufacture of each lens of the optical lens 10 is relatively simple and convenient, and the manufacturing cost of the optical lens 10 can be reduced.
  • the design parameters of the optical lens 10 according to the second embodiment of the present application are as follows in Table 4.
  • the first lens 11 is a lens that is curved toward the image side of the optical lens 10, and the first lens 11 has a negative refractive power, so that a scene in a larger field of view can enter the optical lens 10, improving the performance of the optical lens 10.
  • the angle of view of the optical lens 10; the combined refractive power of the second lens 12 and the third lens 13 is positive refractive power, which can converge the light incident from the first lens 11 to reduce light loss and make the light as much as possible to converge
  • the optical lens 10 is transmitted to the photosensitive element 20; the combined refractive power of the fourth lens 14 and the fifth lens 15 is negative refractive power, which can be used to expand the light beam, thereby increasing the amount of light formed on the photosensitive element 20.
  • the image height of the optical lens 10 is high, so that the optical lens 10 can match the photosensitive element with a large incident angle of the chief ray, and the imaging resolution of the optical lens 10 is improved.
  • the object sides of the first lens 11 , the sixth lens 16 and the seventh lens 17 all have at least one inflection point, so the first lens 11 , the sixth lens 16 and the seventh lens 17 all have better
  • the functions of adjusting optical distortion and eliminating aberration can further reduce the distortion of the optical lens 10, so as to ensure that the optical lens 10 can have a large field of view, and also have a small distortion, so as to achieve better Optical effect.
  • the surface shapes of the object side surface and the image side surface of each lens of the optical lens 10 are high-order aspheric surfaces, and the high-order aspheric coefficients of each lens can be optimized through the cooperation between the lenses. Effectively correct peripheral aberrations such as astigmatism and distortion, especially peripheral aberrations at large viewing angles are well corrected.
  • Table 5 shows the aspheric coefficients of the optical lens 100 according to the second embodiment of the present application, as shown in Table 5.
  • 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
  • A2, A4, A6, A8, A10,..., A26, A28, A30 is the aspheric coefficient.
  • Each lens of the optical lens 10 of the present embodiment can be designed and obtained by substituting the parameters in Table 5 into the above formula.
  • Each lens of the optical lens 10 of the present embodiment is designed according to the parameters in the above-mentioned Tables 4 and 5, so that the optical lens 10 of the present embodiment can have the basic parameters shown in Table 6 below.
  • f1 represents the focal length of the first mirror 11
  • f2 represents the focal length of the second mirror 12
  • f3 represents the focal length of the third mirror 13
  • f4 represents the focal length of the fourth mirror 14
  • f5 represents the focal length of the fifth mirror 15
  • f6 represents the focal length of the first mirror 15.
  • the focal length of the six lenses 16, f7 represents the focal length of the seventh lens 17
  • f represents the focal length of the optical lens
  • TTL represents the total optical length of the optical lens 10
  • IMH represents the diagonal length of the effective pixel area on the photosensitive element 20
  • FOV represents the optical lens 10
  • F# is the aperture F value of the optical lens 10
  • DIST represents the maximum optical distortion of the optical lens 10 in the entire field of view
  • D1 represents the aperture of the first lens 11.
  • the maximum angle of view of the optical lens 10 is 143.6°, and the maximum optical distortion
  • (unit is %) 19.6% is guaranteed in the entire field of view.
  • the optical lens 10 in this manner can also have smaller optical distortion under the condition of having a larger field of view, so as to obtain a better imaging effect.
  • the aperture value F# of the optical lens 10 in this embodiment is 2, that is, the aperture value F# of the optical lens 10 in this embodiment is small, so that the optical lens 10 can be used well under low illumination.
  • the ratio of the aperture D1 of the first lens 11 to the diagonal length of the effective pixel area on the imaging surface of the optical lens 10 is
  • 0.961, that is, the aperture D1 of the first lens 11 and the optical lens 10
  • the ratio between the distance TTL from the object side of the first lens L1 of the system to the imaging surface of the imaging lens on the optical axis and the diagonal length of the effective pixel area on the imaging surface of the system is
  • 1.025.
  • the total optical length TTL of the optical lens 10 is basically the same as the image height IMH of the optical lens 10 , so that the imaging of the optical lens 10 can have higher resolution, and the arrangement of the lenses of the optical lens 10 It can be more compact, so that the optical length of the optical lens 10 can be shortened, so that the optical lens 10 can be miniaturized, and it is convenient to be used in a small electronic device 1000 .
  • 0.198.
  • the distance between the lenses of the optical lens 10 and the imaging surface can also be smaller, so as to ensure that the total optical length of the optical lens 10 can be shorter.
  • the optical lens 10 can be miniaturized, and it is convenient to be used in a small electronic device 1000 .
  • 11-13 are graphs showing the optical performance of the optical lens 10 according to the second embodiment.
  • FIG. 11 shows a spherical chromatic aberration diagram of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passing through the optical lens 10 of the second embodiment.
  • the ordinate of FIG. 11 represents the normalized pupil coordinates, and the abscissa represents the spherical chromatic aberration value, and the unit is millimeter. As can be seen from FIG.
  • the spherical chromatic aberration of light of different wavelength bands after passing through the optical lens 10 is small, that is, the spherical chromatic aberration of the imaging of the optical lens 10 of this embodiment is small, so the The optical lens 10 has better optical imaging effect.
  • FIG. 12 shows an astigmatic field curve after light with a wavelength of 555 nm passes through the optical lens 10 of the second embodiment.
  • the ordinate of FIG. 12 represents the angle of the field of view, and the unit is degree (°), and the unit of the abscissa is the astigmatic field curvature of the optical lens 10 , and the unit is millimeter (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dashed line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • the astigmatic field curvature of the light passing through the optical lens 10 of this embodiment is small in both the sagittal direction and the meridional direction, that is, the astigmatic field curvature of the image formed by the optical lens 10 of this embodiment is small.
  • the optical lens 10 in this manner has a better optical imaging effect.
  • FIG. 13 shows a distortion diagram of light having a wavelength of 555 nm passing through the optical lens 10 of the second embodiment.
  • the ordinate of Fig. 13 represents the field angle, in degrees (°), and the abscissa is the distortion value of light having a wavelength of 555 nm passing through the optical lens 10 of the second embodiment, and the unit is %.
  • the distortion of the light after passing through the optical lens 10 of this embodiment is small, that is, the distortion of the image formed by the optical lens 10 of this embodiment is small, so the optical lens 10 of this embodiment can achieve a larger field of view In the case of angle, it also has less distortion, so it has better optical imaging effect.
  • FIG. 14 is a schematic cross-sectional view of multiple lenses of the optical lens 10 according to the third embodiment of the present application.
  • the optical lens 10 has seven lenses, which are a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , a fifth lens 15 , a sixth lens 16 and a seventh lens 17 .
  • the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16 and the seventh lens 17 are arranged in order from the object side to the image side, and each lens is coaxial set up.
  • the first lens 11 has negative refractive power
  • the second lens 12 has positive refractive power
  • the third lens 13 has positive refractive power
  • the fourth lens 14 has negative refractive power
  • the fifth lens 15 has positive refractive power
  • the third lens 13 has positive refractive power.
  • the six mirrors 16 have positive refractive power
  • the seventh mirror 17 has negative refractive power.
  • the materials of the first lens 11 to the seventh lens 17 are all optical plastics, so that the manufacture of each lens of the optical lens 10 is relatively simple and convenient, and the manufacturing cost of the optical lens 10 can be reduced.
  • the design parameters of the optical lens 10 according to the third embodiment of the present application are as follows in Table 7.
  • the first lens 11 is a lens that is curved toward the image side of the optical lens 10, and the first lens 11 has a negative refractive power, so that a scene in a larger field of view can enter the optical lens 10, improving the performance of the optical lens 10.
  • the angle of view of the optical lens 10; the combined refractive power of the second lens 12 and the third lens 13 is positive refractive power, which can converge the light incident from the first lens 11 to reduce light loss and make the light converge as much as possible
  • the optical lens 10 is transmitted to the photosensitive element 20; the combined refractive power of the fourth lens 14 and the fifth lens 15 is negative refractive power, which can be used to expand the light beam, thereby increasing the amount of light formed in the photosensitive element 20.
  • the image height of the optical lens 10 enables the optical lens 10 to match the photosensitive element with a large incident angle of the chief ray, thereby improving the imaging resolution of the optical lens 10; the combined refractive power of the sixth lens 16 and the seventh lens 17 is negative refractive power , can also be used to expand the beam, thereby further increasing the image height of the image formed on the photosensitive element 20, so that the optical lens 10 can match the photosensitive element with a large incident angle of the chief ray, and further improve the optical lens 10. imaging resolution.
  • the object sides of the first lens 11 , the sixth lens 16 and the seventh lens 17 all have at least one inflection point, so the first lens 11 , the sixth lens 16 and the seventh lens 17 all have better
  • the functions of adjusting optical distortion and eliminating aberration can further reduce the distortion of the optical lens 10, so as to ensure that the optical lens 10 can have a large field of view, and also have a small distortion, so as to achieve better Optical effect.
  • the surface shapes of the object side surface and the image side surface of each lens of the optical lens 10 are high-order aspheric surfaces, and the high-order aspheric coefficients of each lens can be optimized through the cooperation between the lenses. Effectively correct peripheral aberrations such as astigmatism and distortion, especially peripheral aberrations at large viewing angles are well corrected.
  • Table 8 shows the aspheric coefficients of the optical lens 100 according to the third embodiment of the present application, as shown in Table 8.
  • 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
  • A2, A4, A6, A8, A10,..., A26, A28, A30 is the aspheric coefficient.
  • Each lens of the optical lens 10 of the present embodiment can be designed and obtained by substituting the parameters in Table 8 into the above formula.
  • Each lens of the optical lens 10 of the present embodiment is designed according to the parameters in the above-mentioned Tables 7 and 8, so that the optical lens 10 of the present embodiment can have the basic parameters shown in Table 9 below.
  • the maximum field of view angle of the optical lens 10 is 128°, and the maximum optical distortion
  • (unit is %) 38% is guaranteed within the entire field of view.
  • the optical lens 10 in this manner can also have smaller optical distortion under the condition of having a larger field of view, so as to obtain a better imaging effect.
  • the aperture value F# of the optical lens 10 in this embodiment is 2.193, that is, the aperture value F# of the optical lens 10 in this embodiment is small, so that the optical lens 10 can be used well under low illumination.
  • the ratio of the aperture D1 of the first lens 11 to the diagonal length of the effective pixel area on the imaging surface of the optical lens 10 is
  • 0.790, that is, the aperture D1 of the first lens 11 and the optical lens 10
  • the difference in the diagonal lengths of the effective pixel areas on the imaging surface is not much different, so as to ensure that the first lens 11 has a larger aperture, so that the optical lens 10 can have a larger field of view, and at the same time, the imaging of the optical lens 10 is also guaranteed. It can be larger, so that the photosensitive element with a large incident angle of the chief ray can be matched, and the imaging resolution of the optical lens 10 can be improved.
  • the ratio between the distance TTL from the object side of the first lens L1 of the system to the imaging surface of the imaging lens on the optical axis and the diagonal length of the effective pixel area on the imaging surface of the system is
  • 1.078.
  • the total optical length TTL of the optical lens 10 is basically the same as the image height IMH of the optical lens 10 , so that the imaging of the optical lens 10 can have higher resolution, and the arrangement of the lenses of the optical lens 10 It can be more compact, so that the optical length of the optical lens 10 can be shortened, so that the optical lens 10 can be miniaturized, and it is convenient to be used in a small electronic device 1000 .
  • 0.141.
  • the distance between the lenses of the optical lens 10 and the imaging surface can also be smaller, so as to ensure that the total optical length of the optical lens 10 can be shorter.
  • the optical lens 10 can be miniaturized, and it is convenient to be used in a small electronic device 1000 .
  • 15-17 are graphs showing the optical performance of the optical lens 10 according to the third embodiment.
  • FIG. 15 shows a spherical chromatic aberration diagram 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.
  • the ordinate of FIG. 15 represents the normalized pupil coordinates, and the abscissa represents the spherical chromatic aberration value, and the unit is millimeter. As can be seen from FIG.
  • the spherical chromatic aberration of light of different wavelength bands after passing through the optical lens 10 is small, that is, the spherical chromatic aberration of the imaging of the optical lens 10 of this embodiment is small, so the The optical lens 10 has better optical imaging effect.
  • FIG. 16 shows an astigmatic field curve after light with a wavelength of 555 nm passes through the optical lens 10 of the third embodiment.
  • the ordinate of FIG. 16 represents the angle of the field of view, and the unit is degrees (°), and the unit of the abscissa is the astigmatic field curvature of the optical lens 10 , and the unit is millimeters (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dotted line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • the astigmatic field curvature of the light passing through the optical lens 10 of the present embodiment in both the sagittal direction and the meridional direction is small, that is, the astigmatic field curvature of the image formed by the optical lens 10 of the present embodiment is small.
  • the optical lens 10 in this manner has a better optical imaging effect.
  • FIG. 17 shows a distortion diagram of light having a wavelength of 555 nm passing through the optical lens 10 of the third embodiment.
  • the ordinate in FIG. 17 represents the field of view angle, in degrees (°), and the abscissa is the distortion value of light with a wavelength of 555 nm passing through the optical lens 10 of the third embodiment, in %.
  • the distortion of the light after passing through the optical lens 10 of this embodiment is small, that is, the distortion of the image formed by the optical lens 10 of this embodiment is small, so the optical lens 10 of this embodiment can achieve a larger field of view In the case of angle, it also has less distortion, so it has better optical imaging effect.
  • FIG. 18 is a schematic cross-sectional view of multiple lenses of the optical lens 10 according to the fourth embodiment of the present application.
  • the optical lens 10 has seven lenses, which are a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , a fifth lens 15 , a sixth lens 16 and a seventh lens 17 .
  • the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16 and the seventh lens 17 are arranged in order from the object side to the image side, and each lens is coaxial set up.
  • the first lens 11 has negative refractive power
  • the second lens 12 has positive refractive power
  • the third lens 13 has positive refractive power
  • the fourth lens 14 has negative refractive power
  • the fifth lens 15 has negative refractive power
  • the sixth lens 16 has positive refractive power
  • the seventh lens 17 has negative refractive power.
  • the materials of the first lens 11 to the seventh lens 17 are all optical plastics, so that the manufacture of each lens of the optical lens 10 is relatively simple and convenient, and the manufacturing cost of the optical lens 10 can be reduced.
  • the design parameters of the optical lens 10 according to the fourth embodiment of the present application are as follows in Table 10.
  • the first lens 11 is a lens that is curved toward the image side of the optical lens 10, and the first lens 11 has a negative refractive power, so that a scene in a larger field of view can enter the optical lens 10, improving the performance of the optical lens 10.
  • the angle of view of the optical lens 10; the combined refractive power of the second lens 12 and the third lens 13 is positive refractive power, which can converge the light incident from the first lens 11 to reduce light loss and make the light converge as much as possible
  • the optical lens 10 is transmitted to the photosensitive element 20; the combined refractive power of the fourth lens 14 and the fifth lens 15 is negative refractive power, which can be used to expand the light beam, thereby increasing the amount of light formed in the photosensitive element 20.
  • the image height of the optical lens 10 enables the optical lens 10 to match the photosensitive element with a large incident angle of the chief ray, thereby improving the imaging resolution of the optical lens 10; the combined refractive power of the sixth lens 16 and the seventh lens 17 is negative refractive power , can also be used to expand the beam, thereby further increasing the image height of the image formed on the photosensitive element 20, so that the optical lens 10 can match the photosensitive element with a large incident angle of the chief ray, and further improve the optical lens 10. imaging resolution.
  • the object sides of the first lens 11 , the sixth lens 16 and the seventh lens 17 all have at least one inflection point, so the first lens 11 , the sixth lens 16 and the seventh lens 17 all have better
  • the functions of adjusting optical distortion and eliminating aberration can further reduce the distortion of the optical lens 10, so as to ensure that the optical lens 10 can have a large field of view, and also have a small distortion, so as to achieve better Optical effect.
  • the surface shapes of the object side surface and the image side surface of each lens of the optical lens 10 are high-order aspheric surfaces, and the high-order aspheric coefficients of each lens can be optimized through the cooperation between the lenses. Effectively correct peripheral aberrations such as astigmatism and distortion, especially peripheral aberrations at large viewing angles are well corrected.
  • Table 11 shows the aspheric coefficients of the optical lens 100 according to the fourth embodiment of the present application, as shown in Table 11.
  • 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 quadratic surface constant
  • A2, A4, A6, A8, A10, ..., A26, A28, A30 is the aspheric coefficient.
  • Each lens of the optical lens 10 of the present embodiment can be designed and obtained by substituting the parameters in Table 11 into the above formula.
  • Each lens of the optical lens 10 of the present embodiment is designed according to the parameters in the above-mentioned Tables 10 and 11, so that the optical lens 10 of the present embodiment can have the basic parameters shown in Table 12 below.
  • 2.093;
  • 4.404;
  • 2.808;
  • 3.809;
  • 3.690;
  • 1.236;
  • 3.69.
  • different lenses can take on different roles, so as to ensure that the lens can have relatively small distortion under the condition that the lens can have large, and make the optical
  • the imaging of the lens 10 can have higher resolution, so that the lens can obtain a better imaging effect.
  • the overall optical length of the optical lens 10 can be reduced as much as possible, thereby realizing miniaturization of the optical lens 10 .
  • the maximum angle of view of the optical lens 10 is 131°, and the maximum optical distortion
  • (unit is %) 17.6% is guaranteed in the entire field of view.
  • the optical lens 10 in this manner can also have smaller optical distortion under the condition of having a larger field of view, so as to obtain a better imaging effect.
  • the aperture value F# of the optical lens 10 in this embodiment is 1.510, that is, the aperture value F# of the optical lens 10 in this embodiment is small, so that the optical lens 10 can be used well under low illumination.
  • the ratio of the aperture D1 of the first lens 11 to the diagonal length of the effective pixel area on the imaging surface of the optical lens 10 is
  • 1.290, that is, the aperture D1 of the first lens 11 and the optical lens 10
  • the difference in the diagonal lengths of the effective pixel areas on the imaging surface is not much different, so as to ensure that the first lens 11 has a larger aperture, so that the optical lens 10 can have a larger field of view, and at the same time, the imaging of the optical lens 10 is also guaranteed. It can be larger, so that the photosensitive element with a large incident angle of the chief ray can be matched, and the imaging resolution of the optical lens 10 can be improved.
  • the ratio between the distance TTL from the object side of the first lens L1 of the system to the imaging surface of the imaging lens on the optical axis and the diagonal length of the effective pixel area on the imaging surface of the system is
  • 1.633.
  • the total optical length TTL of the optical lens 10 is not much different from the image height IMH of the optical lens 10 , so that the imaging of the optical lens 10 can have higher resolution, and at the same time, the arrangement of the lenses of the optical lens 10 The cloth can be more compact, so that the optical length of the optical lens 10 can be shortened, so that the optical lens 10 can be miniaturized, and it is convenient to use in the small electronic device 1000 .
  • 0.135.
  • the distance between the lenses of the optical lens 10 and the imaging surface can also be smaller, so as to ensure that the total optical length of the optical lens 10 can be shorter.
  • the optical lens 10 can be miniaturized, and it is convenient to be used in a small electronic device 1000 .
  • 19-21 are graphs showing the optical performance of the optical lens 10 according to the fourth embodiment.
  • FIG. 19 shows a spherical chromatic aberration diagram of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passing through the optical lens 10 of the fourth embodiment.
  • the ordinate of FIG. 19 represents the normalized pupil coordinates
  • the abscissa represents the spherical chromatic aberration value, in millimeters. It can be seen from FIG. 19 that in this embodiment, the spherical chromatic aberration of the light of different wavelength bands after passing through the optical lens 10 is small, that is, the spherical chromatic aberration of the imaging of the optical lens 10 of this embodiment is small, so the The optical lens 10 has better optical imaging effect.
  • FIG. 20 shows an astigmatic field curve after light with a wavelength of 555 nm passes through the optical lens 10 of the fourth embodiment.
  • the ordinate of FIG. 20 represents the angle of the field of view, and the unit is degrees (°), and the unit of the abscissa is the astigmatic field curvature of the optical lens 10 , and the unit is millimeters (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dashed line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • the astigmatic field curvature of the light passing through the optical lens 10 of this embodiment is small in both the sagittal direction and the meridional direction, that is, the astigmatic field curvature of the image formed by the optical lens 10 of this embodiment is small.
  • the optical lens 10 in this manner has a better optical imaging effect.
  • FIG. 21 shows a distortion diagram of light having a wavelength of 555 nm passing through the optical lens 10 of the fourth embodiment.
  • the ordinate of FIG. 21 represents the field of view angle, in degrees (°), and the abscissa is the distortion value of light with a wavelength of 555 nm passing through the optical lens 10 of the fourth embodiment, and the unit is %.
  • the distortion of the light after passing through the optical lens 10 of this embodiment is small, that is, the distortion of the image formed by the optical lens 10 of this embodiment is small, so the optical lens 10 of this embodiment can achieve a larger field of view In the case of angle, it also has less distortion, so it has better optical imaging effect.
  • FIG. 22 is a schematic cross-sectional view of multiple lenses of the optical lens 10 according to the fifth embodiment of the present application.
  • the optical lens 10 has seven lenses, which are a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , a fifth lens 15 , a sixth lens 16 and a seventh lens 17 .
  • the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16 and the seventh lens 17 are arranged in order from the object side to the image side, and each lens is coaxial set up.
  • the first lens 11 has negative refractive power
  • the second lens 12 has positive refractive power
  • the third lens 13 has positive refractive power
  • the fourth lens 14 has positive refractive power
  • the fifth lens 15 has negative refractive power
  • the third lens 13 has positive refractive power.
  • the six mirrors 16 have positive refractive power
  • the seventh mirror 17 has negative refractive power.
  • the materials of the first lens 11 to the seventh lens 17 are all optical plastics, so that the manufacture of each lens of the optical lens 10 is relatively simple and convenient, and the manufacturing cost of the optical lens 10 can be reduced.
  • the design parameters of the optical lens 10 according to the fifth embodiment of the present application are as follows in Table 13.
  • the first lens 11 is a lens that is curved toward the image side of the optical lens 10, and the first lens 11 has a negative refractive power, so that a scene in a larger field of view can enter the optical lens 10, improving the performance of the optical lens 10.
  • the angle of view of the optical lens 10; the combined refractive power of the second lens 12 and the third lens 13 is positive refractive power, which can converge the light incident from the first lens 11 to reduce light loss and make the light as much as possible to converge
  • the optical lens 10 is transmitted to the photosensitive element 20; the combined refractive power of the fourth lens 14 and the fifth lens 15 is negative refractive power, which can be used to expand the light beam, thereby increasing the amount of light formed on the photosensitive element 20.
  • the image height of the optical lens 10 is high, so that the optical lens 10 can match the photosensitive element with a large incident angle of the chief ray, and improve the imaging resolution of the optical lens 10; the combined refractive power of the sixth lens 16 and the seventh lens 17 is negative refractive power , can also be used to expand the beam, thereby further increasing the image height of the image formed on the photosensitive element 20, so that the optical lens 10 can match the photosensitive element with a large incident angle of the chief ray, and further improve the optical lens 10. imaging resolution.
  • the object sides of the first lens 11 , the sixth lens 16 and the seventh lens 17 all have at least one inflection point, so the first lens 11 , the sixth lens 16 and the seventh lens 17 all have better
  • the functions of adjusting optical distortion and eliminating aberration can further reduce the distortion of the optical lens 10, so as to ensure that the optical lens 10 can have a large field of view, and also have a small distortion, so as to achieve better Optical effect.
  • the surface shapes of the object side surface and the image side surface of each lens of the optical lens 10 are high-order aspheric surfaces, and the high-order aspheric coefficients of each lens can be optimized through the cooperation between the lenses. Effectively correct peripheral aberrations such as astigmatism and distortion, especially peripheral aberrations at large viewing angles are well corrected.
  • Table 14 shows the aspheric coefficients of the optical lens 100 according to the fifth embodiment of the present application, as shown in Table 14.
  • 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
  • A2, A4, A6, A8, A10,..., A26, A28, A30 is the aspheric coefficient.
  • each lens element of the optical lens 10 of the present embodiment can be designed.
  • Each lens of the optical lens 10 of the present embodiment is designed according to the parameters in the above-mentioned Tables 13 and 14, so that the optical lens 10 of the present embodiment can have the basic parameters shown in Table 15 below.
  • f1 represents the focal length of the first mirror 11
  • f2 represents the focal length of the second mirror 12
  • f3 represents the focal length of the third mirror 13
  • f4 represents the focal length of the fourth mirror 14
  • f5 represents the focal length of the fifth mirror 15
  • f6 represents the focal length of the first mirror 15.
  • the focal length of the six lenses 16, f7 represents the focal length of the seventh lens 17
  • f represents the focal length of the optical lens
  • TTL represents the total optical length of the optical lens 10
  • IMH represents the diagonal length of the effective pixel area on the photosensitive element 20
  • FOV represents the optical lens 10
  • F# is the aperture F value of the optical lens 10
  • DIST represents the maximum optical distortion of the optical lens 10 in the entire field of view
  • D1 represents the aperture of the first lens 11.
  • the maximum field of view angle of the optical lens 10 is 131°, and the maximum optical distortion
  • (unit is %) 32.4% is guaranteed in the entire field of view.
  • the optical lens 10 in this manner can also have smaller optical distortion under the condition of having a larger field of view, so as to obtain a better imaging effect.
  • the aperture value F# of the optical lens 10 in this embodiment is 2.727, that is, the aperture value F# of the optical lens 10 in this embodiment is small, so that the optical lens 10 can be used well under low illumination.
  • the ratio of the aperture D1 of the first lens 11 to the diagonal length of the effective pixel area on the imaging surface of the optical lens 10 is
  • 1.029, that is, the aperture D1 of the first lens 11 and the optical lens 10
  • the ratio between the distance TTL from the object side of the first lens L1 of the system to the imaging surface of the imaging lens on the optical axis and the diagonal length of the effective pixel area on the imaging surface of the system is
  • 1.470.
  • the total optical length TTL of the optical lens 10 is basically the same as the image height IMH of the optical lens 10 , so that the imaging of the optical lens 10 can have higher resolution, and the arrangement of the lenses of the optical lens 10 It can be more compact, so that the optical length of the optical lens 10 can be shortened, so that the optical lens 10 can be miniaturized, and it is convenient to be used in a small electronic device 1000 .
  • 0.227.
  • the distance between the lenses of the optical lens 10 and the imaging surface can also be smaller, so as to ensure that the total optical length of the optical lens 10 can be shorter.
  • the optical lens 10 can be miniaturized, and it is convenient to be used in a small electronic device 1000 .
  • 23 to 25 are diagrams showing the optical performance of the optical lens 10 according to the fifth embodiment.
  • FIG. 23 shows a spherical chromatic aberration diagram of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passing through the optical lens 10 of the fifth embodiment.
  • the ordinate of FIG. 23 represents the normalized pupil coordinates
  • the abscissa represents the spherical chromatic aberration value, in millimeters. It can be seen from FIG. 23 that in this embodiment, the spherical chromatic aberration of the light of different wavelength bands after passing through the optical lens 10 is small, that is, the spherical chromatic aberration of the imaging of the optical lens 10 of this embodiment is small, so the The optical lens 10 has better optical imaging effect.
  • FIG. 24 shows an astigmatic field curve after light with a wavelength of 555 nm passes through the optical lens 10 of the fifth embodiment.
  • the ordinate of FIG. 24 represents the angle of the field of view, and the unit is degrees (°), and the unit of the abscissa is the astigmatic field curvature value of the optical lens 10 , and the unit is millimeters (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dotted line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • the astigmatic field curvature of the light passing through the optical lens 10 of this embodiment is small in both the sagittal direction and the meridional direction, that is, the astigmatic field curvature of the image formed by the optical lens 10 of this embodiment is small.
  • the optical lens 10 in this manner has a better optical imaging effect.
  • FIG. 25 shows a distortion diagram of light having a wavelength of 555 nm passing through the optical lens 10 of the fifth embodiment.
  • the ordinate of FIG. 25 represents the field angle, in degrees (°), and the abscissa is the distortion value of light with a wavelength of 555 nm passing through the optical lens 10 of the fifth embodiment, and the unit is %.
  • the distortion of the light after passing through the optical lens 10 of this embodiment is small, that is, the distortion of the image formed by the optical lens 10 of this embodiment is small, so the optical lens 10 of this embodiment can achieve a larger field of view In the case of angle, it also has less distortion, so it has better optical imaging effect.
  • FIG. 26 is a schematic cross-sectional view of multiple lenses of the optical lens 10 according to the sixth embodiment of the present application.
  • the optical lens 10 has seven lenses, which are a first lens 11 , a second lens 12 , a third lens 13 , a fourth lens 14 , a fifth lens 15 , a sixth lens 16 and a seventh lens 17 .
  • the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16 and the seventh lens 17 are arranged in order from the object side to the image side, and each lens is coaxial set up.
  • the first lens 11 has negative refractive power
  • the second lens 12 has positive refractive power
  • the third lens 13 has positive refractive power
  • the fourth lens 14 has positive refractive power
  • the fifth lens 15 has negative refractive power
  • the third lens 13 has positive refractive power.
  • the six mirrors 16 have positive refractive power
  • the seventh mirror 17 has negative refractive power.
  • the materials of the first lens 11 to the seventh lens 17 are all optical plastics, so that the manufacture of each lens of the optical lens 10 is relatively simple and convenient, and the manufacturing cost of the optical lens 10 can be reduced.
  • the design parameters of the optical lens 10 according to the sixth embodiment of the present application are as follows in Table 16.
  • the first lens 11 is a lens that is curved toward the image side of the optical lens 10, and the first lens 11 has a negative refractive power, so that a scene in a larger field of view can enter the optical lens 10, improving the performance of the optical lens 10.
  • the angle of view of the optical lens 10; the combined refractive power of the second lens 12 and the third lens 13 is positive refractive power, which can converge the light incident from the first lens 11 to reduce light loss and make the light converge as much as possible
  • the optical lens 10 is transmitted to the photosensitive element 20; the combined refractive power of the fourth lens 14 and the fifth lens 15 is negative refractive power, which can be used to expand the light beam, thereby increasing the amount of light formed on the photosensitive element 20.
  • the image height of the optical lens 10 is high, so that the optical lens 10 can match the photosensitive element with a large incident angle of the chief ray, and improve the imaging resolution of the optical lens 10; the combined refractive power of the sixth lens 16 and the seventh lens 17 is negative refractive power , can also be used to expand the beam, thereby further increasing the image height of the image formed on the photosensitive element 20, so that the optical lens 10 can match the photosensitive element with a large incident angle of the chief ray, and further improve the optical lens 10. Image resolution.
  • the object sides of the first lens 11 , the sixth lens 16 and the seventh lens 17 all have at least one inflection point, so the first lens 11 , the sixth lens 16 and the seventh lens 17 all have better
  • the functions of adjusting optical distortion and eliminating aberration can further reduce the distortion of the optical lens 10, so as to ensure that the optical lens 10 can have a large field of view, and also have a small distortion, so as to achieve better Optical effect.
  • the surface shapes of the object side surface and the image side surface of each lens of the optical lens 10 are high-order aspheric surfaces, and the high-order aspheric coefficients of each lens can be optimized through the cooperation between the lenses. Effectively correct peripheral aberrations such as astigmatism and distortion, especially peripheral aberrations at large viewing angles are well corrected.
  • Table 17 shows the aspheric coefficients of the optical lens 100 according to the sixth embodiment of the present application, as shown in Table 17.
  • 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 quadratic surface constant
  • A2, A4, A6, A8, A10, ..., A26, A28, A30 is the aspheric coefficient.
  • Each lens of the optical lens 10 of the present embodiment can be designed and obtained by substituting the parameters in Table 17 into the above formula.
  • Each lens of the optical lens 10 of the present embodiment is designed according to the parameters in the above-mentioned Tables 16 and 17, so that the optical lens 10 of the present embodiment can have the basic parameters shown in Table 18 below.
  • the maximum field of view angle of the optical lens 10 is 140°, and the maximum optical distortion
  • (unit is %) 30% is guaranteed within the entire field of view.
  • the optical lens 10 in this manner can also have smaller optical distortion under the condition of having a larger field of view, so as to obtain a better imaging effect.
  • the aperture value F# of the optical lens 10 in this embodiment is 2.193, that is, the aperture value F# of the optical lens 10 in this embodiment is small, so that the optical lens 10 can be used well under low illumination.
  • the ratio of the aperture D1 of the first lens 11 to the diagonal length of the effective pixel area on the imaging surface of the optical lens 10 is
  • 0.678, that is, the aperture D1 of the first lens 11 and the optical lens 10
  • the ratio between the distance TTL from the object side of the first lens L1 of the system to the imaging surface of the imaging lens on the optical axis and the diagonal length of the effective pixel area on the imaging surface of the system is
  • 0.833.
  • the total optical length TTL of the optical lens 10 is basically the same as the image height IMH of the optical lens 10 , so that the imaging of the optical lens 10 can have higher resolution, and the arrangement of the lenses of the optical lens 10 It can be more compact, so that the optical length of the optical lens 10 can be shortened, so that the optical lens 10 can be miniaturized, and it is convenient to be used in a small electronic device 1000 .
  • 0.200.
  • the distance between the lenses of the optical lens 10 and the imaging surface can also be smaller, so as to ensure that the total optical length of the optical lens 10 can be shorter.
  • the optical lens 10 can be miniaturized, and it is convenient to be used in a small electronic device 1000 .
  • 27-29 are graphs showing the optical performance of the optical lens 10 according to the sixth embodiment.
  • FIG. 27 shows a spherical chromatic aberration diagram of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passing through the optical lens 10 of the sixth embodiment.
  • the ordinate of FIG. 27 represents the normalized pupil coordinates
  • the abscissa represents the spherical chromatic aberration value in millimeters.
  • the spherical chromatic aberration of light of different wavelength bands after passing through the optical lens 10 is small, that is, the spherical chromatic aberration of the imaging of the optical lens 10 of this embodiment is small, so the The optical lens 10 has better optical imaging effect.
  • FIG. 28 shows an astigmatic field curve after light with a wavelength of 555 nm passes through the optical lens 10 of the sixth embodiment.
  • the ordinate of FIG. 28 represents the angle of the field of view, and the unit is degrees (°), and the unit of the abscissa is the astigmatic field curvature value of the optical lens 10 , and the unit is millimeter (mm).
  • the solid line represents the field curvature value of the light with the central wavelength (555 nm) on the meridional image plane, and the dashed line represents the field curvature value of the light with the central wavelength (555 nm) on the sagittal image plane.
  • the astigmatic field curvature of the light passing through the optical lens 10 of this embodiment is small in both the sagittal direction and the meridional direction, that is, the astigmatic field curvature of the image formed by the optical lens 10 of this embodiment is small.
  • the optical lens 10 in this manner has a better optical imaging effect.
  • FIG. 29 shows a distortion diagram of light having a wavelength of 555 nm passing through the optical lens 10 of the sixth embodiment.
  • the ordinate of FIG. 29 represents the field of view angle in degrees (°), and the abscissa is the distortion value of the optical lens 10 according to the sixth embodiment of light with a wavelength of 555 nm, in %.
  • the distortion of the light after passing through the optical lens 10 of this embodiment is small, that is, the distortion of the image formed by the optical lens 10 of this embodiment is small, so the optical lens 10 of this embodiment can achieve a larger field of view In the case of angle, it also has less distortion, so it has better optical imaging effect.
  • the first lens 11 is a lens that is curved toward the image side, and the first lens 11 is a lens with negative refractive power, so that a scene in a larger field of view can enter the optical lens 10 Inside, the field of view of the optical lens 10 is improved.
  • the object side surface of the sixth lens 16 and/or the seventh lens 17 has at least one inflection point, so that the sixth lens 16 and/or the seventh lens 17 can better adjust the optical distortion, eliminate the The effect of aberration can further reduce the distortion of the optical lens 10, thereby ensuring that the optical lens 10 can have a large field of view, but also has a small distortion and achieve better optical effects.
  • the object side surface of the first lens 11 is also a surface with at least one inflection point, so that the first lens 11 can also better adjust optical distortion and eliminate aberrations, thereby further reducing
  • the small distortion of the optical lens 10 ensures that the optical lens 10 can have a large angle of view and at the same time have a small distortion.
  • the diameter D1 of the first lens 11 is also matched with the size of the diagonal length IMH of the effective pixel area on the imaging surface of the optical lens 10, so as to ensure that the optical lens 10 has a larger field of view, Can have high imaging resolution.
  • the optical power of the first lens 11 and the optical power of the seventh lens 17 can be Reasonable distribution is obtained, so as to cooperate with the correction of the aberration of the optical lens 10 , reduce the occurrence of distortion, and improve the imaging quality of the optical lens 10 .

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Abstract

一种光学镜头、摄像头模组和电子设备。通过各镜片的参数优化配合，从而使得光学镜头在能够具有较大的视场范围的情况下，还保证光学镜头的成像具有较小的畸变。具体的，第一镜片为向像侧弯曲的镜片，且第一镜片为具有负光焦度的镜片，从而使得更大视场范围内的景象能够进入光学镜头内，提高光学镜头的视场角。并且，第六镜片和/或第七镜片的物侧面具有至少一个反曲点，使得第六镜片和/或第七镜片具有较好的调整光学畸变、消除像差的作用，从而能够进一步的减小光学镜头的畸变，从而保证光学镜头能够具有较大的视场角的同时，具有较小的畸变。

Description

光学镜头、摄像头模组和电子设备
本申请要求于2021年02月22日提交中国专利局，申请号为202110198855.X、申请名称为“光学镜头、摄像头模组和电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施方式涉及镜头领域，具体涉及一种光学镜头、摄像头模组和电子设备。
背景技术
随着拍摄设备的应用越来越普及，对于拍摄设备的成像镜头的要求越来越高。例如，要求成像镜头能够实现具有较大的视场范围。目前的广角镜头或者超广角镜头即能够满足大视场成像的要求。但是，成像镜头的视场角度越大，拍摄得到的影像的畸变通常越严重。
发明内容
本申请实施方式提供一种能够使拍摄得到的成像具有较小的畸变的光学镜头、包括该光学镜头的摄像头模组、以及包括该摄像头模组的电子设备。本申请中，通过对光学镜头中的镜片数量及镜片参数的优化配合，实现在保证光学镜头能够具有较大的视场范围的情况下，还保证光学镜头的成像具有较小的畸变。
第一方面，提供了一种光学镜头。光学镜头包括自物侧至像侧依次排列的第一镜片、第二镜片、第三镜片、第四镜片、第五镜片、第六镜片及第七镜片；第一镜片为向像侧弯曲的镜片，第一镜片具有负光焦度；第一镜片至第七镜片中每片镜片均包括朝向物侧的物侧面以及朝向像侧的像侧面，第六镜片与第七镜片的物侧面及像侧面均为自由曲面，且第六镜片和/或第七镜片的物侧面具有至少一个反曲点，光学镜头满足下列关系式：
FOV≥125°；|DIST|≤40％；
其中，FOV为光学镜头的视场角；DIST为光学镜头的成像的畸变参数。
需要说明的是，本申请实施方式中以光学镜头为界，被摄物体所在的一侧为物侧，镜片朝向物侧的表面可以称为物侧面；以光学镜头为界，被摄物体的图像所在的一侧为像侧，镜片朝向像侧的表面可以称为像侧面。
本申请中，光学镜头包括七片镜片，通过设计各个镜片的参数，实现各个镜片的参数的优化配合，从而使得光学镜头在能够具有较大的视场范围的情况下，保证光学镜头的成像具有较小的畸变。具体的，本申请实施方式中，第一镜片为向像侧弯曲的镜片，且第一镜片为具有负光焦度的镜片，从而使得更大视场范围内的景象能够进入光学镜头内，提高光学镜头的视场角。并且，本申请实施方式中，第六镜片和/或第七镜片的物侧面具有至少一个反曲点，使得第六镜片和/或第七镜片具有较好的调整光学畸变、消除像差的作用，从而能够进一步的减小光学镜头的畸变，从而保证光学镜头能够具有较大的视场角的情况下，还具有较小的畸变，实现较好的光学效果。具体的，本申请实施方式中，光学镜头的FOV≥125°，|DIST|≤40％，即本申请实施方式的光学镜头具有较大的视场角的情况下，还具有较小的畸变。
一些实施方式中，第一镜片的物侧面具有至少一个反曲点，能够进一步有效的提高光学 镜头的光学入射角，从而提高光学镜头的视场角。并且，物侧面具有至少一个反曲点的第一镜片能够具有较好的畸变矫正效果，从而进一步的减小光学镜头的畸变，提高光学镜头的光学效果。
一些实施方式中，光学镜头满足下列关系式：
0.5≤|D1/IMH|≤1.5；
其中，D1为第一镜片的口径大小，IMH为光学镜头的成像面上的有效像素区域对角线长。
本申请实施方式中，第一镜片的口径大小D1与光学镜头的成像的像高IMH满足上述的关系式，即能够保证第一镜头的口径大小与光学镜头的成像像高较为相近，避免第一镜头的口径过小，从而保证光学镜头具有较好的视场角。并且，也能够避免光学镜头的成像像高过小，从而保证光学镜头的成像具有较高的解析力。
一些实施方式中，光学镜头满足下列关系式：
1.5≤F#≤2.8；
其中，F#为光学镜头的光圈F值。本申请实施方式中，光学镜头的光圈F值满足上述关系式时，光学镜头能够具有足够的入光量，从而保证光学镜头的成像能够具有较好的光学效果。
一些实施方式中，光学镜头满足下列关系式：0.8≤|TTL/IMH|≤1.5；
其中，TTL为光学镜头的光学总长；IMH为光学镜头的成像面上的有效像素区域对角线长。本申请实施方式中，光学镜头的光学总长及成像的像高满足上述关系式时，能够保证光学镜头的成像具有较高的解析力的同时，光学镜头的各镜片的排布能够更加的紧凑，从而使得光学镜头的光学总长能够较短，使得光学镜头能够实现小型化，便于在小型的电子设备中使用。
一些实施方式中，光学镜头满足下列关系式：
0.1≤|f/TTL|≤0.4；
其中，f为光学镜头的焦距；TTL为光学镜头的光学总长。光学镜头的光学总长及焦距满足上述关系式时，能够保证光学镜头的各镜片的排布能够更加的紧凑的同时，光学镜头的镜片至成像面之间的距离也能够较小，从而保证光学镜头的光学总长能够较短，使得光学镜头能够实现小型化，便于在小型的电子设备中使用。
一些实施方式中，光学镜头满足下列关系式：
1.5≤|f1/f|≤2；
f1为第一镜片的焦距；f为光学镜头的焦距。本申请实施方式中，第一镜片的焦距及光学镜头的焦距满足上述关系式，第一镜片的光焦度能够得到合理的分配，从而第一镜片能够起到较好的增加视场角的作用，并配合修正光学镜头的像差，减小畸变情况的产生，提高光学镜头的成像品质。
一些实施方式中，光学镜头满足下列关系式：
2.5≤|f7/f|≤4；
其中，f7为第七镜片的焦距；f为光学镜头的焦距。本申请实施方式中，第七镜片的焦距及光学镜头的焦距满足上述关系式，第七镜片的光焦度能够得到合理的分配，以配合修正光学镜头的像差，减小畸变情况的产生，提高光学镜头的成像品质。
一些实施方式中，第一镜片至第七镜片中每片镜片均具有光焦度；第二镜片及第三镜片 的组合光焦度为正光焦度，第四镜片及第五镜片的组合光焦度为负光焦度，第六镜片及第七镜片的组合光焦度为负光焦度。
本实施方式中，每片镜片均具有光焦度，从而保证每片镜片均能够起到一定的光学效果，以保证实现光学镜头所需达到的光学效果的同时，尽量减小光学镜头的镜片数量，减小光学镜头的光学总长，从而实现光学镜头的小型化。并且，本申请实施方式中，第二镜片及第三镜片的组合光焦度为正光焦度，第四镜片及第五镜片的组合光焦度为负光焦度，第六镜片及第七镜片的组合光焦度为负光焦度，从而实现各个镜片之间的优化配合，以减小光学镜头的畸变。并且，第四镜片及第五镜片的组合光焦度为负光焦度，第六镜片及第七镜片的组合光焦度为负光焦度，能够起到对光线的扩束作用，以保证光学镜头具有较大的像高，从而使得光学镜头能够匹配大主光线入射角的感光元件，提高光学镜头的成像解析力。
本申请一些实施方式中，第四镜片及第七镜片均为负光焦度，第四镜片及第七镜片能够起到对光线的扩散作用，以保证光学镜头具有较大的像高，从而使得光学镜头能够匹配大主光线入射角的感光元件，提高光学镜头的成像解析力。并且，第四镜片及第七镜片能够与其它镜片以配合矫正光学镜头的色差以及畸变，从而使得光学镜头能够实现更好的光学效果。
第二方面，本申请还提供一种摄像头模组，该摄像头模组包括感光元件和上述的光学镜头，感光元件位于光学镜头的像侧，光线经光学镜头后投射至感光元件。
通过感光元件将经过光学镜头后得到的光学图像转为电信号，再进行图像处理等后续步骤，从而能够得到成像质量较好的像。并且，本申请的光学镜头能够保证在具有较大的视场角的情况下，光学镜头的成像的畸变也能够较小，从而得到较好的成像效果。因此，本申请中，包括上述的光学镜头的摄像头模组也能够拍摄得到大视场角、小畸变的成像，即摄像头模组能够具有良好的成像效果。
第三方面，本申请还提供一种电子设备，该电子设备包括图像处理器和上述摄像头模组，图像处理器与摄像头模组通信连接，摄像头模组用于获取图像数据并将图像数据输入到图像处理器中，图像处理器用于对输出其中的图像数据进行处理。
本申请中，通过图像处理器实现对摄像头模组的图像数据进行处理，以得到更好的拍摄图片或影像。并且，本申请的摄像头模组能够拍摄得到大视场角、小畸变的成像，能够具有良好的成像效果。因此，本申请的电子设备能够拍摄得到大视场角、小畸变的成像，能够具有良好的成像效果。
附图说明
图1是本申请一种实施方式的电子设备的结构示意图。
图2是本申请另一种实施方式的电子设备的结构示意图。
图3是图2所示电子设备的成像原理示意图。
图4是本申请一些实施方式的摄像头模组的结构示意图。
图5是图3中所示的第七镜片的截面示意图。
图6是本申请第一实施方式的光学镜头的多片镜片的截面示意图。
图7是波长分别为650nm、610nm、555nm、510nm、470nm的光经过第一实施例的光学镜头后的球色差图。
图8是波长为555nm的光经过第一实施例的光学镜头后的像散场曲图。
图9是波长为555nm的光经过第一实施例的光学镜头的畸变图。
图10是本申请第二实施方式的光学镜头的多片镜片的截面示意图。
图11是波长分别为650nm、610nm、555nm、510nm、470nm的光经过第二实施例的光学镜头后的球色差图。
图12是波长为555nm的光经过第二实施例的光学镜头后的像散场曲图。
图13是波长为555nm的光经过第二实施例的光学镜头的畸变图。
图14是本申请第三实施方式的光学镜头的多片镜片的截面示意图。
图15是波长分别为650nm、610nm、555nm、510nm、470nm的光经过第三实施例的光学镜头后的球色差图。
图16是波长为555nm的光经过第三实施例的光学镜头后的像散场曲图。
图17是波长为555nm的光经过第三实施例的光学镜头的畸变图。
图18是本申请第四实施方式的光学镜头的多片镜片的截面示意图。
图19是波长分别为650nm、610nm、555nm、510nm、470nm的光经过第四实施例的光学镜头后的球色差图。
图20是波长为555nm的光经过第四实施例的光学镜头后的像散场曲图。
图21是波长为555nm的光经过第四实施例的光学镜头的畸变图。
图22是本申请第五实施方式的光学镜头的多片镜片的截面示意图。
图23是波长分别为650nm、610nm、555nm、510nm、470nm的光经过第五实施例的光学镜头后的球色差图。
图24是波长为555nm的光经过第五实施例的光学镜头后的像散场曲图。
图25是波长为555nm的光经过第五实施例的光学镜头的畸变图。
图26是本申请第六实施方式的光学镜头的多片镜片的截面示意图。
图27是波长分别为650nm、610nm、555nm、510nm、470nm的光经过第六实施例的光学镜头后的球色差图。
图28是波长为555nm的光经过第六实施例的光学镜头后的像散场曲图。
图29是波长为555nm的光经过第六实施例的光学镜头的畸变图。
具体实施方式
下面将结合附图，对本申请实施方式中的技术方案进行描述。
为方便理解，下面先对本申请所涉及的技术术语进行解释和描述。
焦距(focal length，简称f)，也称为焦长，是光学系统中衡量光的聚集或发散的度量方式，指无限远的景物通过镜片或镜片组在焦平面结成清晰影像时，镜片或镜片组的光学中心至焦平面的垂直距离。
光圈，是用来控制光线透过镜头照射至感光元件的光量的装置。表达光圈大小用F数/F值表示。
光圈F值(F#)，是镜头的焦距/镜头通光直径得出的相对值(相对孔径的倒数)。光圈F值愈小，在同一单位时间内的进光量便愈多；光圈F值越大，景深越小，拍照的背景内容将会虚化。
正光焦度，也可以称为正折光力，表示镜片有正的焦距、有会聚光线的效果。
负光焦度，也可以称为负折光力，表示镜片有负的焦距、有发散光线的效果。
光学总长(total track length，TTL)，指从光学镜头远离成像面的一端至成像面的总长度， 是形成相机高度的主要因素。
阿贝数，即色散系数，是光学材料在不同波长下的折射率的差值比，代表材料色散程度。
光轴，是一条垂直穿过理想镜片中心的光线。与光轴平行的光线射入凸镜片时，理想的凸镜应是所有的光线会聚在镜片后的一点，这个会聚所有光线的一点，即为焦点。
物侧，以光学镜头为界，待成像景物所在的一侧为物侧。
像侧，以光学镜头为界，待成像景物的图像所在的一侧为像侧。
物侧面，镜片朝向物侧的表面称为物侧面。
像侧面，镜片朝向像侧的表面称为像侧面。
畸变(distortion)是指图像中点显示位置与它们在理想系统中所处位置之间的差距。
视场角(field of view，FOV)是指以光学仪器的镜头为顶点，以被测目标的物像可通过镜头的最大范围的两条边缘构成的夹角。
自由曲面，是指不能由初等解析曲面组成，而由复杂方式自由变化的曲线曲面即所谓的自由曲线曲面组成的曲面。
本申请提供一种电子设备，电子设备可以为手机、平板、电脑、摄像机、照相机或其他形态的具有拍照或摄像功能的电子设备。请参阅图1，图1所示为本申请一种实施方式的电子设备1000的结构示意图。本实施方式中，电子设备1000为手机。其它实施方式中，电子设备1000可以为平板、照相机等其它形态的具有拍摄功能的设备。
电子设备1000包括摄像头模组100以及与摄像头模组100通信连接的图像处理器200。摄像头模组100用于获取图像数据并将图像数据输入到图像处理器200中，以便图像处理器200对图像数据进行处理。其中，摄像头模组100与图像处理器200的通信连接可以包括通过走线连接等电连接方式进行数据传输，也可以通过光缆连接或无线传输等其它能够实现数据传输的方式实现通信连接。
图像处理器200的功能是通过一系列复杂的数学算法运算，对数字图像信号进行优化处理，最后把处理后的信号传到显示器上或存储至存储器中。图像处理器200可以是图像处理芯片或数字信号处理(digital signal processing，DSP)芯片。
图1所示实施方式中，摄像头模组100设于电子设备1000的背面，为电子设备1000的后置摄像头。可以理解的是，一些实施方式中，摄像头模组100还可设于电子设备1000的正面，作为电子设备1000的前置摄像头。前置摄像头及后置摄像头均可以用于自拍，也可以用于拍摄者拍摄其他对象。
一些实施方式中，摄像头模组100有多个，多个是指为两个或者两个以上。多个摄像头模组100能够进行配合工作，从而实现较佳的拍摄效果。请参阅图2，图2所示为本申请另一种实施方式的电子设备1000的结构示意图。图2所示实施方式中，电子设备1000的后置摄像头有两个，两个摄像头模组100均与图像处理器200进行通信连接，以通过图像处理器200实现对两个摄像头模组100的图像数据进行处理，以得到更好的拍摄图片或影像。
应理解，图1所示实施方式的电子设备1000的摄像头模组100的安装位置仅仅是示意性的，在一些其他的实施方式中，摄像头模组100也可以安装于手机上的其他位置。例如，摄像头模组100可以安装于手机背面的上部中间或右上角；或者，摄像头模组100还可以不设置在手机主体上，而设置在相对手机可移动或转动的部件上，例如该部件可以从手机主体上外伸、收回或旋转等。本申请对摄像头模组100的安装位置不做任何限定。
请参阅图2及图3，图2是本申请另一种实施方式的电子设备1000的结构示意图，图3 为图2所示电子设备1000的成像原理示意图。一些实施方式中，电子设备1000还包括模数转换器(也可称为A/D转换器)300。请参见图2，模数转换器300连接于摄像头模组100与图像处理器200之间。模数转换器300用于将摄像头模组100产生的模拟图像信号转换为数字图像信号并传输至图像处理器200，再通过图像处理器200对数字图像信号进行处理，最终通过显示屏或者显示器进行图像或者影像显示。
一些实施方式中，电子设备1000还包括存储器400，存储器400与图像处理器200通信连接，图像处理器200对图像数字信号加工处理以后再将图像传输至存储器400中，以便于在后续需要查看图像时能够随时从存储中查找图像并在显示屏上进行显示(请参见图2)。一些实施方式中，图像处理器200还会对处理后的图像数字信号进行压缩，再存储至存储器400中，以节约存储器400空间。需要说明的是，图2仅为本申请实施方式的结构示意图，其中所示的摄像头模组100、图像处理器200、模数转换器300、存储器400的位置结构等均仅为示意。
请参阅图3，摄像头模组100包括光学镜头10以及感光元件20。感光元件20位于光学镜头10的像侧。其中，光学镜头10的像侧是指光学镜头10靠近待成像景物的成像的一侧。当摄像头模组100进行工作时，待成像景物通过光学镜头10后在感光元件20上成像。具体的，摄像头模组100的工作原理为：待成像景物反射的光线L通过光学镜头10生成光学图像并投射到感光元件20的表面，感光元件20将光学图像转为电信号即模拟图像信号S1并将转换得到的模拟图像信号S1传输至模数转换器300，以通过模数转换器300转换为数字图像信号S2给图像处理器200。
感光元件20是一种半导体芯片，表面包含有几十万到几百万的光电二极管，受到光照射时，会产生电荷，从而完成将光学信号转化为电信号。可选的，感光元件20可以为任意能够将光学信号转化为电信号的器件。例如，感光元件20可以是电荷耦合元件(charge coupled device，CCD)，也可以是互补金属氧化物导体器件(complementary metal-oxide semiconductor，CMOS)。
光学镜头10影响成像质量和成像效果。光学镜头10包括从物侧至像侧排列的多片镜片，其主要利用镜片的折射原理进行成像。具体的，待成像物体的光线通过光学镜头10在焦平面上形成清晰的影像，并通过位于焦平面上的感光元件20记录景物的影像。相邻的镜片之间可以具有空气间隔，也可以紧贴设置。各片镜片起到的主要作用不同，通过不同镜片之间的配合以得到最佳的成像质量。
一些实施方式中，光学镜头10还包括红外滤光片30，红外滤光片30位于感光元件20与光学镜头10的镜片之间。经光学镜头10的各镜片折射后的光线照射至红外滤光片30上，并经红外滤光片30传输至感光元件20。红外滤光片30可以滤掉投射至感光元件20上的不必要的光线，防止感光元件20产生伪色或波纹，以提高其有效分辨率和彩色还原性，并能够避免外界的一些特定光线对感光元件20的损坏，保护感光元件20。
请参阅图4，图4所示为本申请一些实施方式的摄像头模组100的结构示意图。一些实施方式中，光学镜头10还包括镜筒10a，光学镜头10的多片镜片固定于镜筒10a内，且固定于镜筒10a内的多片镜片同轴设置。本申请实施方式中，多片镜片固定于镜筒10a内，各镜片之间的距离固定，光学镜头10为固定焦距的镜头。本申请的其它一些实施方式中，光学镜头10的多片镜片能够在镜筒10a内进行相对移动，以改变多片镜片之间的距离，从而能够改变光学镜头10的焦距，实现光学镜头10的调焦。红外滤光片30可以固定于光学镜头10的 镜筒10a朝向像侧的一端。
摄像头模组100还包括固定基座(holder)50以及线路板60等结构。
固定基座50包括收容腔，光学镜头10的一端安装于固定基座50的收容腔，并与收容腔的腔壁固定，光学镜头10相对于固定基座50固定，不能相对固定基座50移动。线路板60固定于固定基座50背离光学镜头10的一侧。线路板60用于传输电信号。线路板60可以是柔性电路板(flexible printed circuit，FPC)或印刷电路板(printed circuit board，PCB)，其中，FPC可以是单面柔性板、双面柔性板、多层柔性板、刚柔性板或混合结构的柔性电路板等。对于摄像头模组100包括的其他元件在此不再一一详述。红外滤光片30可以与固定基座50的腔壁固定，并位于光学镜头10与线路板60之间；或者，也可以通过支架支撑固定于线路板60的上方。感光元件20通过键合或者贴片等方式固定于线路板60上。并且，感光元件20位于光学镜头10的像侧并与光学镜头10相对设置，光学镜头10生成的光学图像能够投射至感光元件20。一些实施方式中，模数转换器300、图像处理器200、存储器400等也通过键合或者贴片等方式集成于线路板60上，从而通过线路板60实现感光元件20、模数转换器300、图像处理器200、存储器400等之间的通信连接。
可以理解的是，本申请的其它一些实施方式中，光学镜头10的一端安装于固定基座50的收容腔内并能够相对固定基座50进行移动，从而改变光学镜头10与感光元件20之间的距离，从而保证光学镜头10内的多片镜片相对移动以改变光学镜头10的焦距时，光学镜头10始终能在感光元件20上成像，保证摄像头模组100始终能够具有较好的成像效果。具体的，一些实施例中，固定基座50的收容腔的腔壁设有内螺纹，镜筒10a的外壁设有外螺纹，镜筒10a与固定基座50进行螺纹连接。通过驱动镜筒10a相对固定基座50旋转，从而使得镜筒10a相对固定基座50产生轴向方向的移动，使得光学镜头10的镜片靠近或远离感光元件20。可以理解的是，镜筒10a还可以以其它的方式与固定基座50连接，并实现相对固定基座50的移动(例如，镜筒10a与固定基座50之间通过滑轨进行连接)，在此不进行详细列举。
请重新参阅图3，本申请中，光学镜头10中包括自物侧至像侧依次排列的第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17。其中，第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17均同轴设置。本申请实施方式中，光学镜头10的各均为具有正光焦度或负光焦度的镜片，从而保证每片镜片均能够起到一定的光学效果，以保证实现光学镜头10所需达到的光学效果的同时，尽量减小光学镜头10的镜片数量，减小光学镜头10的光学总长，从而实现光学镜头10的小型化。当在多片镜片之间插入平面镜时，平面镜不算作为本申请的光学镜头10的镜片。例如，在第四镜片14、第五镜片15之间插入平面镜时，平面镜不能算作本申请实施方式的第五镜片15。
本申请实施方式中，光学镜头10的各镜片能够带来不同的光学性能，从而通过具有不同的光学性能的镜片进行组合得到具有较大的视场角，同时具有较小的成像畸变的光学镜头10。本申请实施方式中，第一镜片11为向光学镜头10的像侧弯曲的镜片，且第一镜片11具有负光焦度，从而使得更大视场范围内的景象能够进入光学镜头10内，提高光学镜头10的视场角。其中，向光学镜头10的像侧弯曲的镜片是指镜片的物侧面的边缘相对于镜片的物侧面的中心更加的靠近光学镜头10的像侧，且镜片的像侧面的边缘相对于镜片的像侧面的中心更加的靠近光学镜头10的像侧。并且，本申请实施方式中，第六镜片16和/或第七镜片17的物侧面具有至少一个反曲点，使得第六镜片16和/或第七镜片17具有较好的调整光学畸变、消 除像差的作用，从而能够进一步的减小光学镜头10的畸变，从而保证光学镜头10能够具有较大的视场角的情况下，还具有较小的畸变，实现较好的光学效果。需要说明的是，本申请中所说的物侧面的反曲点是指经过镜片的轴线的平面与物侧面相交的轮廓线上的反曲点。因此，本申请所说的反曲点是指经过镜片的轴线的平面与物侧面相交的轮廓线的凹弧与凸弧的分界点。例如，请参阅图5，图5所示为图3中所示的第七镜片17的截面示意图。其中，图5为经第七镜片17的轴线的平面截开第七镜片17得到，因此，图5中的自由曲线171即为经过第七镜片17的轴线的平面与第七镜片17的物侧面相交的轮廓线。图5中，自由曲线171上凹弧与凸弧的分界点有两个，分别为A点及B点，即图3所示实施方式的第七镜片17的物侧面具有两个反曲点。
本申请实施方式中，光学镜头10的FOV≥125°，|DIST|≤40％，即本申请实施方式的光学镜头10具有较大的视场角的情况下，还具有较小的畸变。
本申请的一些实施方式中，第二镜片12及第三镜片13的组合光焦度为正光焦度，能够从第一镜片11入射的光线进行会聚，以减少光线损失，使得光线尽量多的汇聚光学镜头10中，并传输至感光元件20上；第四镜片14及第五镜片15的组合光焦度为负光焦度，能够用于对光束进行扩束，从而增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力；第六镜片16及第七镜片17的组合光焦度为负光焦度，也能够用于对光束进行扩束，从而进一步的增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，进一步的提高光学镜头10的成像解析力。
本申请的一些实施方式中，光学镜头10的第一镜片11的焦距f1与光学镜头10的焦距f满足：1.5≤|f1/f|≤2。本申请实施方式中，通过限制第一镜片11的焦距f1与光学镜头10的焦距f的比值的范围，使得第一镜片11的光焦度能够得到合理的分配，从而第一镜片11能够起到较好的增加视场角的作用，并能够较好的配合其它的镜片以修正光学镜头10的像差，减小畸变情况的产生，提高光学镜头10的成像品质。
一些实施方式中，第一镜片11的物侧面也具有至少一个反曲点，能够进一步有效的提高光学镜头10的光学入射角，从而提高光学镜头10的视场角。并且，物侧面具有至少一个反曲点的第一镜片11能够具有较好的畸变矫正效果，从而进一步的减小光学镜头10的畸变，提高光学镜头10的光学效果。
一些实施方式中，光学镜头10的第一镜片11的口径大小D1与光学镜头10的成像的像高IMH满足关系式：0.5≤|D1/IMH|≤1.5。本申请实施方式中，第一镜片11的口径大小D1与光学镜头10的成像的像高IMH满足上述的关系式，即能够保证第一镜头的口径大小与光学镜头10的成像像高较为相近，避免第一镜头的口径过小，从而保证光学镜头10具有较好的视场角。并且，也能够避免光学镜头10的成像像高过小，从而保证光学镜头10的成像具有较高的解析力。
一些实施方式中，光学镜头10的第七镜片17的焦距f7与光学镜头10的焦距f满足：2.5≤|f7/f|≤4。本申请实施方式中，第七镜片17的焦距及光学镜头10的焦距满足上述关系式时，第七镜片17的光焦度能够得到合理的分配，能够更好的配合其它的镜片以修正光学镜头10的像差，减小畸变情况的产生，提高光学镜头10的成像品质。
一些实施方式中，第四镜片14及第七镜片17均为负光焦度。本申请实施方式中，第四镜片14及第七镜片17均具有负光焦度，能够起到对光线的扩散作用，以保证光学镜头10具 有较大的像高，从而使得光学镜头10能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力。并且，第四镜片14及第七镜片17能够与其它镜片以配合矫正光学镜头10的色差以及畸变，从而使得光学镜头10能够实现更好的光学效果。
一些实施方式中，光学镜头10的光圈F值(F#)满足关系式：1.5≤F#≤2.8。本申请实施方式中，光学镜头10的光圈F值满足上述关系式时，光学镜头10能够具有足够的入光量，从而保证光学镜头10的成像能够具有较好的光学效果。
一些实施方式中，光学镜头10的光学总长TTL与光学镜头10的成像的像高IMH满足关系式：0.8≤|TTL/IMH|≤1.5。本申请实施方式中，光学镜头10的光学总长TTL及光学镜头10的成像的像高IMH满足上述关系式时，能够保证光学镜头10的成像具有较高的解析力的同时，光学镜头10的各镜片的排布能够更加的紧凑，从而使得光学镜头10的光学长度能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
一些实施方式中，光学镜头10的焦距f及光学镜头10的光学总长TTL满足关系式：0.1≤|f/TTL|≤0.4。光学镜头10的焦距f及光学总长TTL满足上述关系式时，能够保证光学镜头10的各镜片的排布能够更加的紧凑的同时，光学镜头10的镜片至成像面之间的距离也能够较小，从而保证光学镜头10的光学总长能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
本申请的一些实施方式中，光学镜头10的各镜片可以为塑料材质、玻璃材质或者其它的复合材料。其中，塑料材质能够容易的制得各种形状复杂的光学镜片结构。玻璃材质的镜片的折射率n1满足：1.50≤n1≤1.90，其相对于塑料镜片的折射率范围(1.55-1.65)来说，折射率可选择的范围较大，更容易得到较薄但性能较好的玻璃镜片，有利于减小光学镜头10的多片镜片的轴上厚度，不容易制得形状复杂的光学镜片结构。因此，本申请的一些实施方式中，考虑制作成本、效率以及光学效果，根据需要合理的搭配不同镜片的具体应用材质。
下面将结合图6至图29更加详细地描述本申请实施方式的一些具体的而非限制性的例子。
请参阅图6，图6所示为本申请第一实施方式的光学镜头10的多片镜片的截面示意图。本实施方式中，光学镜头10的镜片为七片，分别为第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17，第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17自物侧至像侧依次设置，且各片镜片同轴设置。其中，第一镜片11具有负光焦度，第二镜片12具有正光焦度，第三镜片13具有正光焦度，第四镜片14具有负光焦度，第五镜片15具有负光焦度，第六镜片16具有正光焦度，第七镜片17具有负光焦度。
本实施方式中，第一镜片11至第七镜片17的材料均为光学塑料，使得光学镜头10的各镜片制作较为的简单方便，并能够降低光学镜头10的制作成本。
依据上文的关系式，本申请第一实施方式的光学镜头10的设计参数如下表1。
表1第一实施方式的光学镜头10的设计参数
面号 表面类型 曲率半径 厚度 折射率 阿贝数 焦距 圆锥系数
S1 非球面 -1.8759 0.5000 1.5459 56.1354 -2.287 -1.0000
S2 非球面 4.0860 0.8656        
S3 非球面 2.6572 1.2000 1.6446 23.5412 4.168  
S4 非球面 198.8034 0.0739        
S5 非球面 12.9313 0.5678 1.5459 56.1354 2.675  
S6 非球面 -1.6205 0.0614        
S7 非球面 23.8691 0.2300 1.6776 19.2459 -7.730  
S8 非球面 4.2788 0.1072        
S9 非球面 -2.3403 0.4982 1.5704 37.3165 -3.955  
S10 非球面 67.4063 0.1046        
S11 非球面 1.3464 0.9606 1.5459 56.1354 1.650 -1.0000
S12 非球面 -2.0364 0.0300       -1.0000
S13 非球面 1.6218 0.3600 1.6669 20.3532 -3.948 -27.5500
S14 非球面 0.9145 0.7264       -5.0458
S15 球面 无穷 0.2100 1.5183 64.1664    
S16 球面 无穷 0.3099        
其中，S1表示第一镜片11的物侧面，S2表示第一镜片11的像侧面，S3表示第二镜片12的物侧面，S4表示第二镜片12的像侧面，S5表示第三镜片13的物侧面，S6表示第三镜片13的像侧面，S7表示第四镜片14的物侧面，S8表示第四镜片14的像侧面，S9表示第五镜片15的物侧面，S10表示第五镜片15的像侧面，S11表示第六镜片16的物侧面，S12表示第六镜片16的像侧面，S13表示第七镜片17的物侧面，S14表示第七镜片17的像侧面，S15表示光学滤光片30的物侧面，S16表示光学滤光片30的像侧面。需要说明的是，本申请中，S1、S2、S3、S4、S5、S6、S7、S8、S9、S10、S11、S12、S13、S14、S15、S16等符号表示的意义均相同，在后续再次出现时不再进行赘述。
本实施方式中，第一镜片11为向光学镜头10的像侧弯曲的镜片，且第一镜片11具有负光焦度，从而使得更大视场范围内的景象能够进入光学镜头10内，提高光学镜头10的视场角；第二镜片12及第三镜片13的组合光焦度为正光焦度，能够从第一镜片11入射的光线进行会聚，以减少光线损失，使得光线尽量多的汇聚光学镜头10中，并传输至感光元件20上；第四镜片14及第五镜片15的组合光焦度为负光焦度，能够用于对光束进行扩束，从而增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力；第六镜片16及第七镜片17的组合光焦度为负光焦度，也能够用于对光束进行扩束，从而进一步的增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，进一步的提高光学镜头10的成像解析力。
本实施方式中，第一镜片11、第六镜片16及第七镜片17的物侧面均具有至少一个反曲点，因而第一镜片11、第六镜片16及第七镜片17均具有较好的调整光学畸变、消除像差的作用，从而能够进一步的减小光学镜头10的畸变，从而保证光学镜头10能够具有较大的视场角的情况下，还具有较小的畸变，实现较好的光学效果。
本实施方式中，光学镜头10的各镜片的物侧面及像侧面的表面面型均为高次非球面，能够通过各镜片之间的配合，能够使各镜片的高次非球面系数达到最佳效能，以有效修正像散、畸变等外围像差，尤其是大视角时周边的像差得到良好的修正。
表2示出了本申请第一实施例的光学镜头100的非球面系数，如表2所示。
表2第一实施例的光学镜头10各个透镜的非球面系数
面号 A4 A6 A8 A10 A12 A14 A16
S1 4.748E-01 -5.565E-01 5.451E-01 -4.114E-01 2.329E-01 -9.859E-02 3.124E-02
S2 3.936E-01 1.014E+00 -7.449E+00 2.545E+01 -5.562E+01 8.273E+01 -8.500E+01
S3 -2.091E-02 -3.977E-02 -2.585E-02 8.809E-02 -1.574E-01 1.679E-01 -1.001E-01
S4 -3.304E-02 7.742E-01 -1.425E+01 1.623E+02 -1.106E+03 4.585E+03 -1.129E+04
S5 -4.369E-02 5.921E-02 1.674E+01 -3.944E+02 4.088E+03 -2.341E+04 7.639E+04
S6 -4.853E-01 3.946E-01 8.163E+00 -7.056E+01 2.849E+02 -6.958E+02 1.026E+03
S7 -7.968E-01 1.293E+00 -6.037E+00 3.409E+01 -1.293E+02 2.861E+02 -3.660E+02
S8 -5.673E-02 -7.034E-01 2.607E+00 -5.069E+00 6.108E+00 -4.600E+00 2.023E+00
S9 4.275E-01 -2.288E-01 -1.365E+00 4.711E+00 -7.722E+00 7.578E+00 -4.539E+00
S10 -5.626E-01 1.287E+00 -2.355E+00 3.249E+00 -3.356E+00 2.473E+00 -1.206E+00
S11 -5.451E-01 1.072E+00 -1.892E+00 2.604E+00 -2.636E+00 1.934E+00 -1.019E+00
S12 1.239E-01 -7.471E-02 -5.744E-02 2.019E-01 -1.882E-01 9.186E-02 -2.653E-02
S13 7.829E-02 -7.511E-01 1.947E+00 -3.252E+00 3.822E+00 -3.214E+00 1.950E+00
S14 -1.692E-01 2.521E-01 -3.076E-01 2.770E-01 -1.764E-01 7.889E-02 -2.472E-02
面号 A18 A20 A22 A24 A26 A28 A30
S1 -7.404E-03 1.303E-03 -1.677E-04 1.531E-05 -9.377E-07 3.456E-08 -5.787E-10
S2 5.928E+01 -2.616E+01 5.505E+00 7.885E-01 -8.398E-01 2.122E-01 -1.964E-02
S3 3.225E-02 -4.534E-03 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S4 1.515E+04 -8.530E+03 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S5 -1.332E+05 9.633E+04 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S6 -8.324E+02 2.780E+02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S7 2.471E+02 -6.497E+01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S8 -4.271E-01 2.055E-02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S9 1.539E+00 -2.275E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S10 3.451E-01 -4.352E-02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S11 3.776E-01 -9.324E-02 1.320E-02 -3.515E-04 -2.166E-04 3.534E-05 -1.829E-06
S12 4.577E-03 -4.371E-04 1.781E-05 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S13 -8.584E-01 2.736E-01 -6.243E-02 9.929E-03 -1.044E-03 6.526E-05 -1.833E-06
S14 5.363E-03 -7.752E-04 6.692E-05 -2.053E-06 -1.895E-07 2.111E-08 -6.324E-10
其中，A4、A6、A8、A10、A12、A14、A16、A20、A22、A24、A26、A28、A30是非球面系数。需要说明的是，本申请中，A4、A6、A8、A10、A12、A14、A16、A20、A22、A24、A26、A28、A30等符号表示的意义均相同，在后续再次出现时不再进行赘述。需要说明的是，表格中的各参数为科学计数法表示。例如，4.748E-01是指4.748×10 -1；-6.324E-10是指-6.324×10 -10。
在本实施例中，所有非球面面型的镜片均满足如下公式：
Figure PCTCN2022073773-appb-000001
其中，z为非球面的矢高，r为非球面的径向坐标，c为非球面顶点球曲率，K为二次曲面常数，A2、A4、A6、A8、A10、…、A26、A28、A30为非球面系数。
通过将表2中的参数代入至上述公式即能够设计得到本实施方式的光学镜头10的各镜片。根据上述表1及表2中的各参数设计本实施方式的光学镜头10的各镜片，使得本实施方式的光学镜头10能够具有如下表3所示的基本参数。
表3第一实施方式的光学镜头10基本参数
|f1/f| 1.575 f(mm) 1.453
|f2/f| 2.87 TTL(mm) 6.810
|f3/f| 1.842 IMH(mm) 6.559
|f4/f| 5.322 FOV(°) 140°
|f5/f| 2.723 F# 2.193
|f6/f| 1.136 |DIST| 17.6％
|f7/f| 2.718 D1 5.470
其中，f1表示第一镜片11的焦距，f2表示第二镜片12的焦距，f3表示第三镜片13的焦距，f4表示第四镜片14的焦距，f5表示第五镜片15的焦距，f6表示第六镜片16的焦距，f7表示第七镜片17的焦距，f表示光学镜头10的焦距，TTL表示光学镜头10的光学总长，IMH表示感光元件20上有效像素区域对角线长，FOV表示光学镜头10的视场角，F#为光学镜头10的光圈F值，DIST表示光学镜头10在全视场范围内的最大光学畸变，D1表示第一镜片11的口径。需要说明的是，本申请中，f1、f2、f3、f4、f5、f6、f7、f、TTL、FOV、IMH、DIST、D1等符号表示的意义均相同，在后续再次出现时不再进行赘述。
根据上述光学镜头10的基本参数可知，本实施方式中，|f1/f|＝1.575；|f2/f|＝2.87；|f3/f|＝1.842；|f4/f|＝5.322；|f5/f|＝2.723；|f6/f|＝1.136；|f7/f|＝2.718。本实施方式中，通过配置光学镜头10的各个镜片的焦距不同，从而使得不同的镜片能够承担不同的作用，以保证镜片能够具有较大的情况下，还能够具有较小的畸变，且使得光学镜头10的成像能够具有较高的解析力，从而使镜片得到较好的成像效果。并且，能够尽量减小光学镜头10的光学总长，实现光学镜头10的小型化。
本实施例中，光学镜头10的最大视场角为140°，全视场范围内保证最大光学畸变|DIST|(单位为％)＝17.6％，相对于一般的光学镜头10来说，本实施方式的光学镜头10能够在具有较大的视场角的情况下，还能够具有较小的光学畸变，从而获得较好的成像效果。
本实施方式的光学镜头10的光圈值F#为2.193，即本实施方式的光学镜头10的光圈值F#较小，使得该光学镜头10在低照度下能够较好的使用。
本实施方式中，第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长的比值为|D1/IMH|＝0.839，即第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长相差不大，从而保证第一镜片11具有较大的口径，以使得光学镜头10能够具有较大的视场角的同时，保证光学镜头10的成像也能够较大，从而能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力。
本实施方式中，系统第一透镜L1的物侧面至成像镜头的成像面在光轴上的距离TTL和系统的成像面上有效像素区域对角线长的比值为|TTL/IMH|＝1.038。本实施方式中，光学镜头10的光学总长TTL与光学镜头10的成像的像高IMH基本相同，使得光学镜头10的成像能够具有较高的解析力的同时，光学镜头10的各镜片的排布能够更加的紧凑，从而使得光学镜头10的光学长度能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
本实施方式中，光学镜头10的焦距f与光学镜头10的光学总长TTL的比值|f/TTL|＝0.213。本实施方式中，光学镜头10的各镜片的排布能够更加的紧凑的同时，光学镜头10的镜片至成像面之间的距离也能够较小，从而保证光学镜头10的光学总长能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
图7-图9为第一实施例的光学镜头10的光学性能的表征图。
具体的，图7示出了波长分别为650nm、610nm、555nm、510nm、470nm的光经过第一实施例的光学镜头10后的球色差图。图7的纵坐标表示的是归一化瞳孔坐标，横坐标表示球色差值，单位为毫米。从图7中可以看出，本实施例中，不同波段的光经光学镜头10后的球色差均较小，即本实施方式的光学镜头10的成像的球色差较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图8中示出了波长为555nm的光经过第一实施例的光学镜头10后的像散场曲图。图8的纵坐标表示视场角度，单位为度(°)，横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。从图中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图9中示出了波长为555nm的光经过第一实施例的光学镜头10的畸变图。图9的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第一实施例的光学镜头10的畸变值，单位为％。从图中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小，因而本实施方式的光学镜头10能够实现较大的视场角的情况下，还具有较小的畸变，从而具有较好的光学成像效果。
请参阅图10，图10所示为本申请第二实施方式的光学镜头10的多片镜片的截面示意图。本实施方式中，光学镜头10的镜片为七片，分别为第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17，第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17自物侧至像侧依次设置，且各片镜片同轴设置。其中，第一镜片11具有负光焦度，第二镜片12具有正光焦度，第三镜片13具有正光焦度，第四镜片14具有正光焦度，第五镜片15具有负光焦度，第六镜片16具有正光焦度，第七镜片17具有正光焦度。
本实施方式中，第一镜片11至第七镜片17的材料均为光学塑料，使得光学镜头10的各镜片制作较为的简单方便，并能够降低光学镜头10的制作成本。
依据上文的关系式，本申请第二实施方式的光学镜头10的设计参数如下表4。
表4第二实施方式的光学镜头10的设计参数
面号 表面类型 曲率半径 厚度 折射率 阿贝数 焦距 圆锥系数
S1 非球面 16.6058 0.3138 1.5463 55.9861 -2.006 5.7593
S2 非球面 1.0213 0.5697       -0.9491
S3 非球面 2.5750 0.8296 1.6563 21.5228 4.527 0.3634
S4 非球面 16.8380 0.4540       -41.6851
S5 非球面 -3.7842 0.3863 1.5463 55.9861 8.028 9.2231
S6 非球面 -2.1047 0.0873       -13.6914
S7 非球面 4.5894 1.0181 1.5463 55.9861 1.632 20.7521
S8 非球面 -1.0195 0.1101       -1.4190
S9 非球面 -1.4672 0.2858 1.6499 22.4774 -1.578 -1.3091
S10 非球面 3.6638 0.1173       -1.4678
S11 非球面 -25.9375 0.6624 1.5463 55.9861 2.708 72.9444
S12 非球面 -1.4121 0.0611       -0.3384
S13 非球面 1.9601 0.7464 1.5463 55.9861 11.886 -0.3030
S14 非球面 2.4300 0.4221       -0.1011
S15 球面 无穷 0.2100 1.5183 64.1664    
S16 球面 无穷 0.5152        
本实施方式中，第一镜片11为向光学镜头10的像侧弯曲的镜片，且第一镜片11具有负光焦度，从而使得更大视场范围内的景象能够进入光学镜头10内，提高光学镜头10的视场角；第二镜片12及第三镜片13的组合光焦度为正光焦度，能够从第一镜片11入射的光线进行会聚，以减少光线损失，使得光线尽量多的汇聚光学镜头10中，并传输至感光元件20上；第四镜片14及第五镜片15的组合光焦度为负光焦度，能够用于对光束进行扩束，从而增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力。
本实施方式中，第一镜片11、第六镜片16及第七镜片17的物侧面均具有至少一个反曲点，因而第一镜片11、第六镜片16及第七镜片17均具有较好的调整光学畸变、消除像差的作用，从而能够进一步的减小光学镜头10的畸变，从而保证光学镜头10能够具有较大的视场角的情况下，还具有较小的畸变，实现较好的光学效果。
本实施方式中，光学镜头10的各镜片的物侧面及像侧面的表面面型均为高次非球面，能够通过各镜片之间的配合，能够使各镜片的高次非球面系数达到最佳效能，以有效修正像散、畸变等外围像差，尤其是大视角时周边的像差得到良好的修正。
表5示出了本申请第二实施方式的光学镜头100的非球面系数，如表5所示。
表5第二实施方式的光学镜头10各个透镜的非球面系数
面号 A4 A6 A8 A10 A12 A14 A16
S1 1.304E-03 2.520E-04 -1.663E-05 5.055E-08 2.762E-09 0.000E+00 0.000E+00
S2 -7.015E-02 -3.080E-03 9.631E-02 -1.862E-01 2.079E-01 -1.412E-01 5.856E-02
S3 -5.128E-02 4.046E-02 1.918E-03 -2.817E-02 3.976E-02 -3.426E-02 1.797E-02
S4 4.612E-02 8.374E-02 -8.167E-02 3.965E-02 4.789E-05 -9.459E-04 -4.635E-05
S5 3.969E-02 -9.866E-02 4.328E-01 -1.249E+00 3.060E+00 -5.343E+00 6.034E+00
S6 1.555E-02 -3.218E-01 1.655E+00 -4.444E+00 7.218E+00 -7.488E+00 5.645E+00
S7 1.490E-01 -4.163E-02 -1.546E+00 6.772E+00 -1.241E+01 -8.170E-01 4.662E+01
S8 3.133E-01 -9.965E-01 4.011E+00 -1.413E+01 3.026E+01 -4.076E+01 3.517E+01
S9 -1.610E-01 1.393E+00 -6.059E+00 1.937E+01 -4.881E+01 8.360E+01 -9.082E+01
S10 -6.040E-01 1.550E+00 -2.681E+00 3.291E+00 -3.001E+00 2.036E+00 -9.848E-01
S11 -1.413E-01 3.767E-01 -4.364E-01 2.522E-01 -5.410E-02 -1.481E-02 5.870E-03
S12 1.065E-01 1.213E-02 -1.210E-02 2.961E-04 1.208E-03 6.347E-05 1.360E-05
S13 -6.628E-02 -1.835E-02 1.043E-02 -2.211E-03 -2.448E-04 8.491E-05 3.283E-07
S14 -3.490E-02 -1.746E-02 9.173E-03 -2.292E-03 2.777E-04 -1.387E-05 -8.031E-08
面号 A18 A20 A22 A24 A26 A28 A30
S1 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S2 -1.446E-02 1.949E-03 -1.102E-04 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S3 -5.489E-03 8.962E-04 -6.061E-05 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S4 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S5 -4.142E+00 1.567E+00 -2.498E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S6 -3.782E+00 2.064E+00 -5.457E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S7 -8.675E+01 6.915E+01 -2.124E+01 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S8 -1.894E+01 5.820E+00 -7.810E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S9 5.914E+01 -2.079E+01 2.988E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S10 3.146E-01 -5.857E-02 4.774E-03 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S11 4.190E-03 -2.732E-03 4.507E-04 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S12 7.385E-07 1.887E-07 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S13 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S14 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
在本实施例中，所有非球面面型的镜片均满足如下公式：
Figure PCTCN2022073773-appb-000002
其中，z为非球面的矢高，r为非球面的径向坐标，c为非球面顶点球曲率，K为二次曲面常数，A2、A4、A6、A8、A10、…、A26、A28、A30为非球面系数。
通过将表5中的参数代入至上述公式即能够设计得到本实施方式的光学镜头10的各镜片。根据上述表4及表5中的各参数设计本实施方式的光学镜头10的各镜片，使得本实施方式的光学镜头10能够具有如下表6所示的基本参数。
表6第二实施方式的光学镜头10基本参数
|f1/f| 1.478 f(mm) 1.357
|f2/f| 3.335 TTL(mm) 6.851
|f3/f| 5.914 IMH(mm) 6.683
|f4/f| 1.202 FOV(°) 143.6°
|f5/f| 1.162 F# 2
|f6/f| 1.995 |DIST| 19.6％
|f7/f| 8.757 D1 6.420
其中，f1表示第一镜片11的焦距，f2表示第二镜片12的焦距，f3表示第三镜片13的焦距，f4表示第四镜片14的焦距，f5表示第五镜片15的焦距，f6表示第六镜片16的焦距，f7表示第七镜片17的焦距，f表示光学镜头10的焦距，TTL表示光学镜头10的光学总长，IMH表示感光元件20上有效像素区域对角线长，FOV表示光学镜头10的视场角，F#为光学镜头10的光圈F值，DIST表示光学镜头10在全视场范围内的最大光学畸变，D1表示第一镜片11的口径。需要说明的是，本申请中，f1、f2、f3、f4、f5、f6、f7、f、TTL、FOV、IMH、DIST、D1等符号表示的意义均相同，在后续再次出现时不再进行赘述。
根据上述光学镜头10的基本参数可知，本实施方式中，|f1/f|＝1.478；|f2/f|＝3.335；|f3/f|＝5.914；|f4/f|＝1.202；|f5/f|＝1.162；|f6/f|＝1.995；|f7/f|＝8.757。本实施方式中，通过配置光学镜头10的各个镜片的焦距不同，从而使得不同的镜片能够承担不同的作用，以保证镜片能够具有较大的情况下，还能够具有较小的畸变，且使得光学镜头10的成像能够具有较高的解析力，从而使镜片得到较好的成像效果。并且，能够尽量减小光学镜头10的光学总长，实现光学镜头10的小型化。
本实施例中，光学镜头10的最大视场角为143.6°，全视场范围内保证最大光学畸变|DIST|(单位为％)＝19.6％，相对于一般的光学镜头10来说，本实施方式的光学镜头10能够在具有较大的视场角的情况下，还能够具有较小的光学畸变，从而获得较好的成像效果。
本实施方式的光学镜头10的光圈值F#为2，即本实施方式的光学镜头10的光圈值F#较小，使得该光学镜头10在低照度下能够较好的使用。
本实施方式中，第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长的比值为|D1/IMH|＝0.961，即第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长相差不大，从而保证第一镜片11具有较大的口径，以使得光学镜头10能够具有较大的视场角的同时，保证光学镜头10的成像也能够较大，从而能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力。
本实施方式中，系统第一透镜L1的物侧面至成像镜头的成像面在光轴上的距离TTL和系统的成像面上有效像素区域对角线长的比值为|TTL/IMH|＝1.025。本实施方式中，光学镜头10的光学总长TTL与光学镜头10的成像的像高IMH基本相同，使得光学镜头10的成像能够具有较高的解析力的同时，光学镜头10的各镜片的排布能够更加的紧凑，从而使得光学镜头10的光学长度能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
本实施方式中，光学镜头10的焦距f与光学镜头10的光学总长TTL的比值|f/TTL|＝0.198。本实施方式中，光学镜头10的各镜片的排布能够更加的紧凑的同时，光学镜头10的镜片至成像面之间的距离也能够较小，从而保证光学镜头10的光学总长能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
图11-图13为第二实施方式的光学镜头10的光学性能的表征图。
具体的，图11示出了波长分别为650nm、610nm、555nm、510nm、470nm的光经过第二实施方式的光学镜头10后的球色差图。图11的纵坐标表示的是归一化瞳孔坐标，横坐标表示球色差值，单位为毫米。从图11中可以看出，本实施例中，不同波段的光经光学镜头10后的球色差均较小，即本实施方式的光学镜头10的成像的球色差较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图12中示出了波长为555nm的光经过第二实施方式的光学镜头10后的像散场曲图。图12的纵坐标表示视场角度，单位为度(°)，横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。从图中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图13中示出了波长为555nm的光经过第二实施方式的光学镜头10的畸变图。图13的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第二实施方式 的光学镜头10的畸变值，单位为％。从图中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小，因而本实施方式的光学镜头10能够实现较大的视场角的情况下，还具有较小的畸变，从而具有较好的光学成像效果。
请参阅图14，图14所示为本申请第三实施方式的光学镜头10的多片镜片的截面示意图。本实施方式中，光学镜头10的镜片为七片，分别为第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17，第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17自物侧至像侧依次设置，且各片镜片同轴设置。其中，第一镜片11具有负光焦度，第二镜片12具有正光焦度，第三镜片13具有正光焦度，第四镜片14具有负光焦度，第五镜片15具有正光焦度，第六镜片16具有正光焦度，第七镜片17具有负光焦度。
本实施方式中，第一镜片11至第七镜片17的材料均为光学塑料，使得光学镜头10的各镜片制作较为的简单方便，并能够降低光学镜头10的制作成本。
依据上文的关系式，本申请第三实施方式的光学镜头10的设计参数如下表7。
表7第三实施方式的光学镜头10的设计参数
面号 表面类型 曲率半径 厚度 折射率 阿贝数 焦距 圆锥系数
S1 非球面 -1.80656 0.58079 1.54587 56.13540 -2.138 -1.00000
S2 非球面 3.67000 0.87764        
S3 非球面 2.70073 1.21423 1.64458 23.54117 4.090  
S4 非球面 -91.55744 0.10000        
S5 非球面 12.78957 0.54150 1.54587 56.13540 2.664  
S6 非球面 -1.61595 0.10930        
S7 非球面 -38.62257 0.23135 1.67757 19.24591 -4.802  
S8 非球面 3.56158 0.10110        
S9 非球面 -15.77142 0.47485 1.57039 37.31646 4.798  
S10 非球面 -2.35748 0.14149        
S11 非球面 -2.12659 0.93958 1.54587 56.13540 2.577  
S12 非球面 -0.97867 0.11132       -1.00000
S13 非球面 0.75857 0.32010 1.66692 20.35321 -25.947 -27.30447
S14 非球面 0.60403 0.72431       -5.93048
S15 球面 无穷 0.21000 1.51827 64.16641    
S16 球面 无穷 0.29603        
本实施方式中，第一镜片11为向光学镜头10的像侧弯曲的镜片，且第一镜片11具有负光焦度，从而使得更大视场范围内的景象能够进入光学镜头10内，提高光学镜头10的视场角；第二镜片12及第三镜片13的组合光焦度为正光焦度，能够从第一镜片11入射的光线进行会聚，以减少光线损失，使得光线尽量多的汇聚光学镜头10中，并传输至感光元件20上；第四镜片14及第五镜片15的组合光焦度为负光焦度，能够用于对光束进行扩束，从而增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力；第六镜片16及第七镜片17的组合光焦度为负光焦度，也能够用于对光束进行扩束，从而进一步的增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，进一步的提高光学镜头10的成像解析力。
本实施方式中，第一镜片11、第六镜片16及第七镜片17的物侧面均具有至少一个反曲点，因而第一镜片11、第六镜片16及第七镜片17均具有较好的调整光学畸变、消除像差的作用，从而能够进一步的减小光学镜头10的畸变，从而保证光学镜头10能够具有较大的视场角的情况下，还具有较小的畸变，实现较好的光学效果。
本实施方式中，光学镜头10的各镜片的物侧面及像侧面的表面面型均为高次非球面，能够通过各镜片之间的配合，能够使各镜片的高次非球面系数达到最佳效能，以有效修正像散、畸变等外围像差，尤其是大视角时周边的像差得到良好的修正。
表8示出了本申请第三实施方式的光学镜头100的非球面系数，如表8所示。
表8第三实施方式的光学镜头10各个透镜的非球面系数
面号 A4 A6 A8 A10 A12 A14 A16
S1 4.813E-01 -5.548E-01 5.259E-01 -3.779E-01 2.019E-01 -8.031E-02 2.389E-02
S2 1.237E-01 4.142E+00 -2.768E+01 1.073E+02 -2.785E+02 5.088E+02 -6.718E+02
S3 -3.907E-02 9.575E-02 -5.148E-01 1.224E+00 -1.899E+00 1.891E+00 -1.150E+00
S4 4.601E-02 -1.145E+00 1.181E+01 -5.608E+01 3.537E+01 8.639E+02 -3.970E+03
S5 -3.621E-02 3.816E-01 -7.614E+00 6.701E+01 -3.263E+02 7.902E+02 -6.128E+02
S6 -2.757E-01 -9.199E-01 7.202E+00 5.767E+00 -2.386E+02 1.069E+03 -2.268E+03
S7 -9.788E-01 5.293E+00 -4.226E+01 2.249E+02 -7.471E+02 1.538E+03 -1.918E+03
S8 -3.857E-01 1.278E+00 -4.104E+00 8.237E+00 -9.706E+00 5.983E+00 -9.739E-01
S9 -5.358E-02 1.281E+00 -5.791E+00 1.320E+01 -1.820E+01 1.576E+01 -8.365E+00
S10 1.161E+00 -3.305E+00 5.185E+00 -5.514E+00 4.012E+00 -1.813E+00 3.646E-01
S11 1.707E+00 -3.979E+00 5.942E+00 -6.320E+00 4.762E+00 -2.309E+00 4.982E-01
S12 2.732E-01 1.162E+00 -3.319E+00 3.916E+00 -2.597E+00 1.058E+00 -2.711E-01
S13 8.006E-01 -3.448E+00 8.531E+00 -1.355E+01 1.417E+01 -1.008E+01 5.018E+00
S14 -1.094E-01 -1.735E-01 7.641E-01 -1.180E+00 1.064E+00 -6.332E-01 2.619E-01
面号 A18 A20 A22 A24 A26 A28 A30
S1 -5.313E-03 8.780E-04 -1.061E-04 9.105E-06 -5.247E-07 1.820E-08 -2.870E-10
S2 6.486E+02 -4.582E+02 2.342E+02 -8.427E+01 2.025E+01 -2.916E+00 1.903E-01
S3 3.894E-01 -5.629E-02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S4 7.260E+03 -4.974E+03 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S5 -9.010E+02 1.402E+03 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S6 2.425E+03 -1.056E+03 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S7 1.326E+03 -3.880E+02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S8 -7.876E-01 3.185E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S9 2.490E+00 -3.187E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S10 3.507E-02 -2.012E-02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S11 1.619E-01 -1.729E-01 6.755E-02 -1.530E-02 2.098E-03 -1.619E-04 5.403E-06
S12 4.268E-02 -3.778E-03 1.440E-04 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S13 -1.773E+00 4.461E-01 -7.895E-02 9.539E-03 -7.416E-04 3.288E-05 -6.134E-07
S14 -7.724E-02 1.639E-02 -2.487E-03 2.635E-04 -1.853E-05 7.780E-07 -1.476E-08
在本实施例中，所有非球面面型的镜片均满足如下公式：
Figure PCTCN2022073773-appb-000003
其中，z为非球面的矢高，r为非球面的径向坐标，c为非球面顶点球曲率，K为二次曲面常数，A2、A4、A6、A8、A10、…、A26、A28、A30为非球面系数。
通过将表8中的参数代入至上述公式即能够设计得到本实施方式的光学镜头10的各镜片。根据上述表7及表8中的各参数设计本实施方式的光学镜头10的各镜片，使得本实施方式的光学镜头10能够具有如下表9所示的基本参数。
表9第三实施方式的光学镜头10基本参数
|f1/f| 2.138 f(mm) 1.000
|f2/f| 4.090 TTL(mm) 7.074
|f3/f| 2.664 IMH(mm) 6.559
|f4/f| 4.802 FOV(°) 128°
|f5/f| 4.798 F# 2.193
|f6/f| 2.577 |DIST| 38％
|f7/f| 25.947 D1 5.182
根据上述光学镜头10的基本参数可知，本实施方式中，|f1/f|＝2.138；|f2/f|＝4.090；|f3/f|＝2.664；|f4/f|＝4.802；|f5/f|＝4.798；|f6/f|＝2.577；|f7/f|＝25.947。本实施方式中，通过配置光学镜头10的各个镜片的焦距不同，从而使得不同的镜片能够承担不同的作用，以保证镜片能够具有较大的情况下，还能够具有较小的畸变，且使得光学镜头10的成像能够具有较高的解析力，从而使镜片得到较好的成像效果。并且，能够尽量减小光学镜头10的光学总长，实现光学镜头10的小型化。
本实施例中，光学镜头10的最大视场角为128°，全视场范围内保证最大光学畸变|DIST|(单位为％)＝38％，相对于一般的光学镜头10来说，本实施方式的光学镜头10能够在具有较大的视场角的情况下，还能够具有较小的光学畸变，从而获得较好的成像效果。
本实施方式的光学镜头10的光圈值F#为2.193，即本实施方式的光学镜头10的光圈值F#较小，使得该光学镜头10在低照度下能够较好的使用。
本实施方式中，第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长的比值为|D1/IMH|＝0.790，即第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长相差不大，从而保证第一镜片11具有较大的口径，以使得光学镜头10能够具有较大的视场角的同时，保证光学镜头10的成像也能够较大，从而能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力。
本实施方式中，系统第一透镜L1的物侧面至成像镜头的成像面在光轴上的距离TTL和系统的成像面上有效像素区域对角线长的比值为|TTL/IMH|＝1.078。本实施方式中，光学镜头10的光学总长TTL与光学镜头10的成像的像高IMH基本相同，使得光学镜头10的成像能够具有较高的解析力的同时，光学镜头10的各镜片的排布能够更加的紧凑，从而使得光学镜头10的光学长度能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
本实施方式中，光学镜头10的焦距f与光学镜头10的光学总长TTL的比值|f/TTL|＝0.141。本实施方式中，光学镜头10的各镜片的排布能够更加的紧凑的同时，光学镜头10的镜片至成像面之间的距离也能够较小，从而保证光学镜头10的光学总长能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
图15-图17为第三实施方式的光学镜头10的光学性能的表征图。
具体的，图15示出了波长分别为650nm、610nm、555nm、510nm、470nm的光经过第三实施方式的光学镜头10后的球色差图。图15的纵坐标表示的是归一化瞳孔坐标，横坐标表示球色差值，单位为毫米。从图15中可以看出，本实施例中，不同波段的光经光学镜头10后的球色差均较小，即本实施方式的光学镜头10的成像的球色差较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图16中示出了波长为555nm的光经过第三实施方式的光学镜头10后的像散场曲图。图16的纵坐标表示视场角度，单位为度(°)，横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。从图中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图17中示出了波长为555nm的光经过第三实施方式的光学镜头10的畸变图。图17的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第三实施方式的光学镜头10的畸变值，单位为％。从图中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小，因而本实施方式的光学镜头10能够实现较大的视场角的情况下，还具有较小的畸变，从而具有较好的光学成像效果。
请参阅图18，图18所示为本申请第四实施方式的光学镜头10的多片镜片的截面示意图。本实施方式中，光学镜头10的镜片为七片，分别为第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17，第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17自物侧至像侧依次设置，且各片镜片同轴设置。其中，第一镜片11具有负光焦度，第二镜片12具有正光焦度，第三镜片13具有正光焦度，第四镜片14具有负光焦度，第五镜片15具有负光焦度，第六镜片16具有正光焦度，第七镜片17具有负光焦度。
本实施方式中，第一镜片11至第七镜片17的材料均为光学塑料，使得光学镜头10的各镜片制作较为的简单方便，并能够降低光学镜头10的制作成本。
依据上文的关系式，本申请第四实施方式的光学镜头10的设计参数如下表10。
表10第四实施方式的光学镜头10的设计参数
面号 表面类型 曲率半径 厚度 折射率 阿贝数 焦距 圆锥系数
S1 非球面 -2.89602 0.73863 1.54587 56.13540 -2.302 -1.00000
S2 非球面 2.42016 1.09262        
S3 非球面 4.41499 1.83715 1.64458 23.54117 4.844  
S4 非球面 -8.92539 0.10210        
S5 非球面 14.03408 0.48126 1.54587 56.13540 3.089  
S6 非球面 -1.89322 0.10000        
S7 非球面 8.32643 0.22000 1.67757 19.24591 -4.190  
S8 非球面 2.09466 0.10000        
S9 非球面 -16.59189 0.56876 1.57039 37.31646 -4.059  
S10 非球面 2.72396 0.10000        
S11 非球面 1.13294 1.29908 1.54587 56.13540 1.359 -1.00000
S12 非球面 -1.27996 0.10000       -1.00000
S13 非球面 0.98228 0.22000 1.66692 20.35321 -4.059 -13.96630
S14 非球面 0.65618 0.50358       -4.19519
S15 球面 无穷 0.23100 1.51827 64.16641    
S16 球面 无穷 0.33232        
本实施方式中，第一镜片11为向光学镜头10的像侧弯曲的镜片，且第一镜片11具有负光焦度，从而使得更大视场范围内的景象能够进入光学镜头10内，提高光学镜头10的视场角；第二镜片12及第三镜片13的组合光焦度为正光焦度，能够从第一镜片11入射的光线进行会聚，以减少光线损失，使得光线尽量多的汇聚光学镜头10中，并传输至感光元件20上；第四镜片14及第五镜片15的组合光焦度为负光焦度，能够用于对光束进行扩束，从而增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力；第六镜片16及第七镜片17的组合光焦度为负光焦度，也能够用于对光束进行扩束，从而进一步的增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，进一步的提高光学镜头10的成像解析力。
本实施方式中，第一镜片11、第六镜片16及第七镜片17的物侧面均具有至少一个反曲点，因而第一镜片11、第六镜片16及第七镜片17均具有较好的调整光学畸变、消除像差的作用，从而能够进一步的减小光学镜头10的畸变，从而保证光学镜头10能够具有较大的视场角的情况下，还具有较小的畸变，实现较好的光学效果。
本实施方式中，光学镜头10的各镜片的物侧面及像侧面的表面面型均为高次非球面，能够通过各镜片之间的配合，能够使各镜片的高次非球面系数达到最佳效能，以有效修正像散、畸变等外围像差，尤其是大视角时周边的像差得到良好的修正。
表11示出了本申请第四实施方式的光学镜头100的非球面系数，如表11所示。
表11第四实施方式的光学镜头10各个透镜的非球面系数
面号 A4 A6 A8 A10 A12 A14 A16
S1 2.216E-01 -1.687E-01 1.099E-01 -5.659E-02 2.210E-02 -6.441E-03 1.394E-03
S2 9.607E-03 1.754E+00 -7.799E+00 2.037E+01 -3.421E+01 3.725E+01 -2.485E+01
S3 1.546E-03 -1.218E-01 3.456E-01 -6.649E-01 7.997E-01 -6.070E-01 2.818E-01
S4 -6.676E-03 -4.435E-01 4.025E+00 -1.879E+01 4.787E+01 -5.399E+01 -9.951E+00
S5 -3.638E-02 1.273E-01 -2.572E+00 1.752E+01 -6.784E+01 1.540E+02 -2.003E+02
S6 -9.275E-02 -5.846E-01 1.899E+00 -5.783E-01 -1.818E+01 6.516E+01 -1.004E+02
S7 -3.076E-01 -1.234E+00 4.552E+00 -1.115E+01 1.962E+01 -2.074E+01 9.858E+00
S8 -1.826E-01 -4.732E-01 1.710E+00 -3.142E+00 3.988E+00 -3.488E+00 1.947E+00
S9 -7.133E-02 5.293E-01 -1.155E+00 1.437E+00 -1.105E+00 5.162E-01 -1.303E-01
S10 -8.298E-01 1.497E+00 -2.293E+00 2.477E+00 -1.708E+00 6.786E-01 -1.242E-01
S11 -6.338E-01 1.179E+00 -1.933E+00 2.473E+00 -2.403E+00 1.762E+00 -9.689E-01
S12 2.563E-01 -3.719E-01 4.281E-01 -3.334E-01 1.689E-01 -5.473E-02 1.129E-02
S13 6.016E-01 -2.579E+00 4.925E+00 -6.327E+00 6.017E+00 -4.333E+00 2.354E+00
S14 3.848E-01 -1.682E+00 3.121E+00 -3.642E+00 2.939E+00 -1.701E+00 7.155E-01
面号 A18 A20 A22 A24 A26 A28 A30
S1 -2.232E-04 2.623E-05 -2.226E-06 1.323E-07 -5.208E-09 1.214E-10 -1.264E-12
S2 7.450E+00 2.593E+00 -3.853E+00 1.904E+00 -5.151E-01 7.595E-02 -4.798E-03
S3 -7.286E-02 8.033E-03 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S4 7.796E+01 -4.937E+01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S5 1.351E+02 -3.640E+01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S6 6.210E+01 6.543E+00 -1.751E+01 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S7 2.644E-02 -1.235E+00 2.498E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S8 -6.151E-01 8.332E-02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S9 1.149E-02 8.812E-04 -3.797E-05 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S10 7.139E-05 2.337E-03 -1.189E-04 1.999E-05 0.000E+00 0.000E+00 0.000E+00
S11 3.966E-01 -1.194E-01 2.588E-02 -3.914E-03 3.902E-04 -2.298E-05 6.034E-07
S12 -1.490E-03 1.331E-04 -9.830E-06 6.596E-07 -2.464E-08 0.000E+00 0.000E+00
S13 -9.532E-01 2.837E-01 -6.084E-02 9.116E-03 -9.032E-04 5.309E-05 -1.400E-06
S14 -2.195E-01 4.886E-02 -7.777E-03 8.603E-04 -6.271E-05 2.705E-06 -5.225E-08
在本实施例中，所有非球面面型的镜片均满足如下公式：
Figure PCTCN2022073773-appb-000004
其中，z为非球面的矢高，r为非球面的径向坐标，c为非球面顶点球曲率，K为二次曲面常数，A2、A4、A6、A8、A10、…、A26、A28、A30为非球面系数。
通过将表11中的参数代入至上述公式即能够设计得到本实施方式的光学镜头10的各镜片。根据上述表10及表11中的各参数设计本实施方式的光学镜头10的各镜片，使得本实施方式的光学镜头10能够具有如下表12所示的基本参数。
表12第四实施方式的光学镜头10基本参数
|f1/f| 2.093 f(mm) 1.100
|f2/f| 4.404 TTL(mm) 8.126
|f3/f| 2.808 IMH(mm) 4.977
|f4/f| 3.809 FOV(°) 131°
|f5/f| 3.690 F# 1.510
|f6/f| 1.236 |DIST| 17.6％
|f7/f| 3.69 D1 6.420
根据上述光学镜头10的基本参数可知，本实施方式中，f1/f|＝2.093；|f2/f|＝4.404；|f3/f|＝2.808；|f4/f|＝3.809；|f5/f|＝3.690；|f6/f|＝1.236；|f7/f|＝3.69。本实施方式中，通过配置光学镜头10的各个镜片的焦距不同，从而使得不同的镜片能够承担不同的作用，以保证镜片能够具有较大的情况下，还能够具有较小的畸变，且使得光学镜头10的成像能够具有较高的解析力，从而使镜片得到较好的成像效果。并且，能够尽量减小光学镜头10的光学总长，实现光学镜头10的小型化。
本实施例中，光学镜头10的最大视场角为131°，全视场范围内保证最大光学畸变|DIST|(单位为％)＝17.6％，相对于一般的光学镜头10来说，本实施方式的光学镜头10能够在具有较大的视场角的情况下，还能够具有较小的光学畸变，从而获得较好的成像效果。
本实施方式的光学镜头10的光圈值F#为1.510，即本实施方式的光学镜头10的光圈值F#较小，使得该光学镜头10在低照度下能够较好的使用。
本实施方式中，第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长的比值为|D1/IMH|＝1.290，即第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长相差不大，从而保证第一镜片11具有较大的口径，以使得光学镜头10能够具有较大的视场角的同时，保证光学镜头10的成像也能够较大，从而能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力。
本实施方式中，系统第一透镜L1的物侧面至成像镜头的成像面在光轴上的距离TTL和系统的成像面上有效像素区域对角线长的比值为|TTL/IMH|＝1.633。本实施方式中，光学镜头10的光学总长TTL与光学镜头10的成像的像高IMH相差不大，使得光学镜头10的成像能够具有较高的解析力的同时，光学镜头10的各镜片的排布能够更加的紧凑，从而使得光学镜头10的光学长度能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
本实施方式中，光学镜头10的焦距f与光学镜头10的光学总长TTL的比值|f/TTL|＝0.135。本实施方式中，光学镜头10的各镜片的排布能够更加的紧凑的同时，光学镜头10的镜片至成像面之间的距离也能够较小，从而保证光学镜头10的光学总长能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
图19-图21为第四实施方式的光学镜头10的光学性能的表征图。
具体的，图19示出了波长分别为650nm、610nm、555nm、510nm、470nm的光经过第四实施方式的光学镜头10后的球色差图。图19的纵坐标表示的是归一化瞳孔坐标，横坐标表示球色差值，单位为毫米。从图19中可以看出，本实施例中，不同波段的光经光学镜头10后的球色差均较小，即本实施方式的光学镜头10的成像的球色差较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图20中示出了波长为555nm的光经过第四实施方式的光学镜头10后的像散场曲图。图20的纵坐标表示视场角度，单位为度(°)，横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。从图中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图21中示出了波长为555nm的光经过第四实施方式的光学镜头10的畸变图。图21的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第四实施方式的光学镜头10的畸变值，单位为％。从图中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小，因而本实施方式的光学镜头10能够实现较大的视场角的情况下，还具有较小的畸变，从而具有较好的光学成像效果。
请参阅图22，图22所示为本申请第五实施方式的光学镜头10的多片镜片的截面示意图。本实施方式中，光学镜头10的镜片为七片，分别为第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17，第一镜片11、第二镜片12、第三 镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17自物侧至像侧依次设置，且各片镜片同轴设置。其中，第一镜片11具有负光焦度，第二镜片12具有正光焦度，第三镜片13具有正光焦度，第四镜片14具有正光焦度，第五镜片15具有负光焦度，第六镜片16具有正光焦度，第七镜片17具有负光焦度。
本实施方式中，第一镜片11至第七镜片17的材料均为光学塑料，使得光学镜头10的各镜片制作较为的简单方便，并能够降低光学镜头10的制作成本。
依据上文的关系式，本申请第五实施方式的光学镜头10的设计参数如下表13。
表13第五实施方式的光学镜头10的设计参数
面号 表面类型 曲率半径 厚度 折射率 阿贝数 焦距 圆锥系数
S1 非球面 -3.51374 0.68598 1.54587 56.13540 -2.952  
S2 非球面 3.18183 1.04535        
S3 非球面 3.57211 1.52452 1.64458 23.54117 5.064  
S4 非球面 -31.51479 0.10000        
S5 非球面 38.87307 0.46029 1.54587 56.13540 3.133  
S6 非球面 -1.78167 0.10000        
S7 非球面 -23.17261 0.20721 1.67757 19.24591 -4.352  
S8 非球面 3.39137 0.10000        
S9 非球面 -10.26463 0.63239 1.57039 37.31646 -13.635  
S10 非球面 32.81986 0.20977        
S11 非球面 1.76800 1.61462 1.54587 56.13540 2.390 -1.00000
S12 非球面 -3.37372 0.12689        
S13 非球面 3.02950 0.69029 1.66692 20.35321 -4.110 -34.47560
S14 非球面 1.30784 0.60259       -5.56959
S15 球面 无穷 0.23100 1.51827 64.16641    
S16 球面 无穷 0.33232        
本实施方式中，第一镜片11为向光学镜头10的像侧弯曲的镜片，且第一镜片11具有负光焦度，从而使得更大视场范围内的景象能够进入光学镜头10内，提高光学镜头10的视场角；第二镜片12及第三镜片13的组合光焦度为正光焦度，能够从第一镜片11入射的光线进行会聚，以减少光线损失，使得光线尽量多的汇聚光学镜头10中，并传输至感光元件20上；第四镜片14及第五镜片15的组合光焦度为负光焦度，能够用于对光束进行扩束，从而增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力；第六镜片16及第七镜片17的组合光焦度为负光焦度，也能够用于对光束进行扩束，从而进一步的增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，进一步的提高光学镜头10的成像解析力。
本实施方式中，第一镜片11、第六镜片16及第七镜片17的物侧面均具有至少一个反曲点，因而第一镜片11、第六镜片16及第七镜片17均具有较好的调整光学畸变、消除像差的作用，从而能够进一步的减小光学镜头10的畸变，从而保证光学镜头10能够具有较大的视场角的情况下，还具有较小的畸变，实现较好的光学效果。
本实施方式中，光学镜头10的各镜片的物侧面及像侧面的表面面型均为高次非球面，能够通过各镜片之间的配合，能够使各镜片的高次非球面系数达到最佳效能，以有效修正像散、 畸变等外围像差，尤其是大视角时周边的像差得到良好的修正。
表14示出了本申请第五实施方式的光学镜头100的非球面系数，如表14所示。
表14第五实施方式的光学镜头10各个透镜的非球面系数
面号 A4 A6 A8 A10 A12 A14 A16
S1 1.761E-01 -1.210E-01 7.504E-02 -3.683E-02 1.361E-02 -3.702E-03 7.280E-04
S2 2.252E-01 -1.540E-01 6.291E-01 -2.813E+00 7.969E+00 -1.479E+01 1.886E+01
S3 -8.075E-03 -3.483E-02 4.948E-02 -9.270E-02 1.086E-01 -7.989E-02 3.378E-02
S4 -3.564E-02 -2.539E-01 2.495E+00 -1.418E+01 5.095E+01 -1.137E+02 1.552E+02
S5 -2.623E-02 -4.232E-01 4.282E+00 -3.325E+01 1.682E+02 -5.490E+02 1.104E+03
S6 -1.732E-01 1.582E-01 -1.264E+00 5.484E+00 -1.433E+01 1.998E+01 -1.315E+01
S7 -4.393E-01 -2.202E-02 2.647E-01 -1.349E+00 8.489E+00 -2.622E+01 3.756E+01
S8 -2.457E-01 8.279E-02 7.338E-02 2.462E-01 -1.075E+00 1.575E+00 -1.180E+00
S9 -4.616E-02 2.065E-01 -3.004E-01 1.783E-01 6.229E-02 -1.600E-01 9.826E-02
S10 -3.351E-01 3.378E-01 -3.729E-01 3.997E-01 -3.563E-01 2.212E-01 -8.496E-02
S11 -2.021E-01 1.964E-01 -2.119E-01 2.176E-01 -1.829E-01 1.171E-01 -5.632E-02
S12 1.132E-02 1.365E-01 -2.261E-01 1.968E-01 -1.030E-01 3.380E-02 -6.972E-03
S13 -7.410E-02 2.156E-02 6.255E-02 -1.539E-01 1.778E-01 -1.268E-01 6.126E-02
S14 -7.830E-02 6.320E-02 -3.057E-02 -8.306E-04 1.358E-02 -1.102E-02 5.053E-03
面号 A18 A20 A22 A24 A26 A28 A30
S1 -1.007E-04 9.237E-06 -4.737E-07 2.097E-09 1.372E-09 -8.039E-11 1.565E-12
S2 -1.697E+01 1.088E+01 -4.948E+00 1.561E+00 -3.249E-01 4.021E-02 -2.242E-03
S3 -6.866E-03 4.350E-04 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S4 -1.191E+02 4.006E+01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S5 -1.237E+03 5.877E+02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S6 -1.541E+00 9.935E+00 -7.030E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S7 -2.098E+01 -3.411E+00 5.911E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S8 4.545E-01 -7.123E-02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S9 -2.724E-02 3.020E-03 -3.770E-05 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S10 1.830E-02 -1.883E-03 1.446E-04 -3.126E-05 0.000E+00 0.000E+00 0.000E+00
S11 2.022E-02 -5.353E-03 1.018E-03 -1.334E-04 1.124E-05 -5.355E-07 1.058E-08
S12 8.729E-04 -5.978E-05 1.670E-06 -7.406E-09 1.380E-09 0.000E+00 0.000E+00
S13 -2.091E-02 5.134E-03 -9.035E-04 1.113E-04 -9.105E-06 4.437E-07 -9.732E-09
S14 -1.538E-03 3.245E-04 -4.779E-05 4.822E-06 -3.177E-07 1.230E-08 -2.123E-10
在本实施例中，所有非球面面型的镜片均满足如下公式：
Figure PCTCN2022073773-appb-000005
其中，z为非球面的矢高，r为非球面的径向坐标，c为非球面顶点球曲率，K为二次曲面常数，A2、A4、A6、A8、A10、…、A26、A28、A30为非球面系数。
通过将表14中的参数代入至上述公式即能够设计得到本实施方式的光学镜头10的各镜 片。根据上述表13及表14中的各参数设计本实施方式的光学镜头10的各镜片，使得本实施方式的光学镜头10能够具有如下表15所示的基本参数。
表15第五实施方式的光学镜头10基本参数
|f1/f| 1.485 f(mm) 1.990
|f2/f| 2.548 TTL(mm) 8.775
|f3/f| 1.577 IMH(mm) 5.969
|f4/f| 2.190 FOV(°) 131°
|f5/f| 6.861 F# 2.727
|f6/f| 1.203 |DIST| 32.4％
|f7/f| 2.068 D1 6.14
其中，f1表示第一镜片11的焦距，f2表示第二镜片12的焦距，f3表示第三镜片13的焦距，f4表示第四镜片14的焦距，f5表示第五镜片15的焦距，f6表示第六镜片16的焦距，f7表示第七镜片17的焦距，f表示光学镜头10的焦距，TTL表示光学镜头10的光学总长，IMH表示感光元件20上有效像素区域对角线长，FOV表示光学镜头10的视场角，F#为光学镜头10的光圈F值，DIST表示光学镜头10在全视场范围内的最大光学畸变，D1表示第一镜片11的口径。需要说明的是，本申请中，f1、f2、f3、f4、f5、f6、f7、f、TTL、FOV、IMH、DIST、D1等符号表示的意义均相同，在后续再次出现时不再进行赘述。
根据上述光学镜头10的基本参数可知，本实施方式中，|f1/f|＝1.485；|f2/f|＝2.548；|f3/f|＝1.577；|f4/f|＝2.190；|f5/f|＝6.861；|f6/f|＝1.203；|f7/f|＝2.068。本实施方式中，通过配置光学镜头10的各个镜片的焦距不同，从而使得不同的镜片能够承担不同的作用，以保证镜片能够具有较大的情况下，还能够具有较小的畸变，且使得光学镜头10的成像能够具有较高的解析力，从而使镜片得到较好的成像效果。并且，能够尽量减小光学镜头10的光学总长，实现光学镜头10的小型化。
本实施例中，光学镜头10的最大视场角为131°，全视场范围内保证最大光学畸变|DIST|(单位为％)＝32.4％，相对于一般的光学镜头10来说，本实施方式的光学镜头10能够在具有较大的视场角的情况下，还能够具有较小的光学畸变，从而获得较好的成像效果。
本实施方式的光学镜头10的光圈值F#为2.727，即本实施方式的光学镜头10的光圈值F#较小，使得该光学镜头10在低照度下能够较好的使用。
本实施方式中，第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长的比值为|D1/IMH|＝1.029，即第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长相差不大，从而保证第一镜片11具有较大的口径，以使得光学镜头10能够具有较大的视场角的同时，保证光学镜头10的成像也能够较大，从而能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力。
本实施方式中，系统第一透镜L1的物侧面至成像镜头的成像面在光轴上的距离TTL和系统的成像面上有效像素区域对角线长的比值为|TTL/IMH|＝1.470。本实施方式中，光学镜头10的光学总长TTL与光学镜头10的成像的像高IMH基本相同，使得光学镜头10的成像能够具有较高的解析力的同时，光学镜头10的各镜片的排布能够更加的紧凑，从而使得光学镜头10的光学长度能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
本实施方式中，光学镜头10的焦距f与光学镜头10的光学总长TTL的比值|f/TTL|＝0.227。 本实施方式中，光学镜头10的各镜片的排布能够更加的紧凑的同时，光学镜头10的镜片至成像面之间的距离也能够较小，从而保证光学镜头10的光学总长能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
图23-图25为第五实施方式的光学镜头10的光学性能的表征图。
具体的，图23示出了波长分别为650nm、610nm、555nm、510nm、470nm的光经过第五实施方式的光学镜头10后的球色差图。图23的纵坐标表示的是归一化瞳孔坐标，横坐标表示球色差值，单位为毫米。从图23中可以看出，本实施例中，不同波段的光经光学镜头10后的球色差均较小，即本实施方式的光学镜头10的成像的球色差较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图24中示出了波长为555nm的光经过第五实施方式的光学镜头10后的像散场曲图。图24的纵坐标表示视场角度，单位为度(°)，横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。从图中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图25中示出了波长为555nm的光经过第五实施方式的光学镜头10的畸变图。图25的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第五实施方式的光学镜头10的畸变值，单位为％。从图中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小，因而本实施方式的光学镜头10能够实现较大的视场角的情况下，还具有较小的畸变，从而具有较好的光学成像效果。
请参阅图26，图26所示为本申请第六实施方式的光学镜头10的多片镜片的截面示意图。本实施方式中，光学镜头10的镜片为七片，分别为第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17，第一镜片11、第二镜片12、第三镜片13、第四镜片14、第五镜片15、第六镜片16及第七镜片17自物侧至像侧依次设置，且各片镜片同轴设置。其中，第一镜片11具有负光焦度，第二镜片12具有正光焦度，第三镜片13具有正光焦度，第四镜片14具有正光焦度，第五镜片15具有负光焦度，第六镜片16具有正光焦度，第七镜片17具有负光焦度。
本实施方式中，第一镜片11至第七镜片17的材料均为光学塑料，使得光学镜头10的各镜片制作较为的简单方便，并能够降低光学镜头10的制作成本。
依据上文的关系式，本申请第六实施方式的光学镜头10的设计参数如下表16。
表16第六实施方式的光学镜头10的设计参数
面号 表面类型 曲率半径 厚度 折射率 阿贝数 焦距 圆锥系数
S1 非球面 -1.71211 0.47669 1.54587 56.13540 -1.585 -1.00000
S2 非球面 1.92088 0.88937        
S3 非球面 3.22331 1.14534 1.64458 23.54117 5.274  
S4 非球面 21.94607 0.10605        
S5 非球面 5.96646 0.55641 1.54587 56.13540 2.781  
S6 非球面 -1.96902 0.09958        
S7 非球面 8.15948 0.23568 1.67757 19.24591 -12.211  
S8 非球面 4.06023 0.10004        
S9 非球面 -2.30367 0.48375 1.57039 37.31646 -3.684  
S10 非球面 25.75454 0.11505        
S11 非球面 1.36534 0.81936 1.54587 56.13540 1.553 -1.00000
S12 非球面 -1.76261 0.15016       -1.00000
S13 非球面 1.12876 0.23679 1.66692 20.35321 -3.481 -21.94598
S14 非球面 0.69577 0.75370       -5.80035
S15 球面 无穷 0.21000 1.51827 64.16641    
S16 球面 无穷 0.33356        
本实施方式中，第一镜片11为向光学镜头10的像侧弯曲的镜片，且第一镜片11具有负光焦度，从而使得更大视场范围内的景象能够进入光学镜头10内，提高光学镜头10的视场角；第二镜片12及第三镜片13的组合光焦度为正光焦度，能够从第一镜片11入射的光线进行会聚，以减少光线损失，使得光线尽量多的汇聚光学镜头10中，并传输至感光元件20上；第四镜片14及第五镜片15的组合光焦度为负光焦度，能够用于对光束进行扩束，从而增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力；第六镜片16及第七镜片17的组合光焦度为负光焦度，也能够用于对光束进行扩束，从而进一步的增大形成于感光元件20上的成像的像高，使得光学镜头10能够匹配大主光线入射角的感光元件，进一步的提高光学镜头10的成像解析力。
本实施方式中，第一镜片11、第六镜片16及第七镜片17的物侧面均具有至少一个反曲点，因而第一镜片11、第六镜片16及第七镜片17均具有较好的调整光学畸变、消除像差的作用，从而能够进一步的减小光学镜头10的畸变，从而保证光学镜头10能够具有较大的视场角的情况下，还具有较小的畸变，实现较好的光学效果。
本实施方式中，光学镜头10的各镜片的物侧面及像侧面的表面面型均为高次非球面，能够通过各镜片之间的配合，能够使各镜片的高次非球面系数达到最佳效能，以有效修正像散、畸变等外围像差，尤其是大视角时周边的像差得到良好的修正。
表17示出了本申请第六实施方式的光学镜头100的非球面系数，如表17所示。
表17第六实施方式的光学镜头10各个透镜的非球面系数
面号 A4 A6 A8 A10 A12 A14 A16
S1 5.484E-01 -6.867E-01 7.035E-01 -5.450E-01 3.109E-01 -1.304E-01 4.040E-02
S2 -2.928E+00 3.655E+01 -2.213E+02 8.422E+02 -2.167E+03 3.926E+03 -5.126E+03
S3 1.991E-01 -1.404E+00 4.800E+00 -1.056E+01 1.480E+01 -1.314E+01 7.158E+00
S4 -5.505E-01 1.540E+01 -2.426E+02 2.282E+03 -1.332E+04 4.873E+04 -1.084E+05
S5 2.503E-02 -1.027E+00 1.137E+01 -8.622E+01 4.239E+02 -1.395E+03 2.897E+03
S6 -1.284E+00 1.368E+01 -1.191E+02 6.725E+02 -2.459E+03 5.741E+03 -8.257E+03
S7 -7.962E-01 5.805E-01 2.123E+00 -1.231E+01 2.091E+01 4.177E+00 -7.021E+01
S8 -1.082E-01 -4.544E-01 2.129E+00 -5.032E+00 7.519E+00 -7.261E+00 4.374E+00
S9 3.433E-01 4.035E-02 -1.439E+00 3.198E+00 -3.660E+00 2.484E+00 -1.007E+00
S10 -5.694E-01 1.225E+00 -2.069E+00 2.640E+00 -2.515E+00 1.672E+00 -7.123E-01
S11 -5.927E-01 1.295E+00 -2.626E+00 4.158E+00 -4.819E+00 4.071E+00 -2.524E+00
S12 3.442E-01 -6.303E-01 7.778E-01 -5.977E-01 3.095E-01 -1.107E-01 2.675E-02
S13 1.838E-02 -2.901E-01 3.961E-01 -2.075E-01 -5.485E-02 1.744E-01 -1.469E-01
S14 -1.656E-01 2.426E-01 -2.939E-01 2.626E-01 -1.658E-01 7.338E-02 -2.278E-02
面号 A18 A20 A22 A24 A26 A28 A30
S1 -9.252E-03 1.559E-03 -1.905E-04 1.640E-05 -9.429E-07 3.245E-08 -5.055E-10
S2 4.879E+03 -3.388E+03 1.697E+03 -5.973E+02 1.400E+02 -1.963E+01 1.245E+00
S3 -2.179E+00 2.835E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S4 1.341E+05 -7.054E+04 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S5 -3.400E+03 1.684E+03 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S6 6.662E+03 -2.311E+03 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S7 9.648E+01 -4.183E+01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S8 -1.490E+00 2.197E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S9 2.265E-01 -2.207E-02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S10 1.742E-01 -1.868E-02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S11 1.150E+00 -3.835E-01 9.206E-02 -1.544E-02 1.711E-03 -1.122E-04 3.282E-06
S12 -4.135E-03 3.664E-04 -1.409E-05 0.000E+00 0.000E+00 0.000E+00 0.000E+00
S13 7.528E-02 -2.625E-02 6.362E-03 -1.057E-03 1.149E-04 -7.359E-06 2.106E-07
S14 4.914E-03 -7.135E-04 6.388E-05 -2.532E-06 -9.114E-08 1.398E-08 -4.361E-10
在本实施例中，所有非球面面型的镜片均满足如下公式：
Figure PCTCN2022073773-appb-000006
其中，z为非球面的矢高，r为非球面的径向坐标，c为非球面顶点球曲率，K为二次曲面常数，A2、A4、A6、A8、A10、…、A26、A28、A30为非球面系数。
通过将表17中的参数代入至上述公式即能够设计得到本实施方式的光学镜头10的各镜片。根据上述表16及表17中的各参数设计本实施方式的光学镜头10的各镜片，使得本实施方式的光学镜头10能够具有如下表18所示的基本参数。
表18第六实施方式的光学镜头10基本参数
|f1/f| 1.163 f(mm) 1.36
|f2/f| 4.202 TTL(mm) 6.81
|f3/f| 2.042 IMH(mm) 8.172
|f4/f| 8.964 FOV(°) 140°
|f5/f| 2.705 F# 2.193
|f6/f| 1.140 |DIST| 30％
|f7/f| 2.556 D1 5.54
根据上述光学镜头10的基本参数可知，本实施方式中，|f1/f|＝1.163；|f2/f|＝4.202；|f3/f|＝2.042；|f4/f|＝8.964；|f5/f|＝2.705；|f6/f|＝1.140；|f7/f|＝2.556。本实施方式中，通过配置光学镜头10的各个镜片的焦距不同，从而使得不同的镜片能够承担不同的作用，以保证镜片能够具有较大的情况下，还能够具有较小的畸变，且使得光学镜头10的成像能够具有较高的解析力，从而使镜片得到较好的成像效果。并且，能够尽量减小光学镜头10的光学总长，实现 光学镜头10的小型化。
本实施例中，光学镜头10的最大视场角为140°，全视场范围内保证最大光学畸变|DIST|(单位为％)＝30％，相对于一般的光学镜头10来说，本实施方式的光学镜头10能够在具有较大的视场角的情况下，还能够具有较小的光学畸变，从而获得较好的成像效果。
本实施方式的光学镜头10的光圈值F#为2.193，即本实施方式的光学镜头10的光圈值F#较小，使得该光学镜头10在低照度下能够较好的使用。
本实施方式中，第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长的比值为|D1/IMH|＝0.678，即第一镜片11的口径D1与光学镜头10的成像面上有效像素区域对角线长相差不大，从而保证第一镜片11具有较大的口径，以使得光学镜头10能够具有较大的视场角的同时，保证光学镜头10的成像也能够较大，从而能够匹配大主光线入射角的感光元件，提高光学镜头10的成像解析力。
本实施方式中，系统第一透镜L1的物侧面至成像镜头的成像面在光轴上的距离TTL和系统的成像面上有效像素区域对角线长的比值为|TTL/IMH|＝0.833。本实施方式中，光学镜头10的光学总长TTL与光学镜头10的成像的像高IMH基本相同，使得光学镜头10的成像能够具有较高的解析力的同时，光学镜头10的各镜片的排布能够更加的紧凑，从而使得光学镜头10的光学长度能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
本实施方式中，光学镜头10的焦距f与光学镜头10的光学总长TTL的比值|f/TTL|＝0.200。本实施方式中，光学镜头10的各镜片的排布能够更加的紧凑的同时，光学镜头10的镜片至成像面之间的距离也能够较小，从而保证光学镜头10的光学总长能够较短，使得光学镜头10能够实现小型化，便于在小型的电子设备1000中使用。
图27-图29为第六实施方式的光学镜头10的光学性能的表征图。
具体的，图27示出了波长分别为650nm、610nm、555nm、510nm、470nm的光经过第六实施方式的光学镜头10后的球色差图。图27的纵坐标表示的是归一化瞳孔坐标，横坐标表示球色差值，单位为毫米。从图27中可以看出，本实施例中，不同波段的光经光学镜头10后的球色差均较小，即本实施方式的光学镜头10的成像的球色差较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图28中示出了波长为555nm的光经过第六实施方式的光学镜头10后的像散场曲图。图28的纵坐标表示视场角度，单位为度(°)，横坐标单位为光学镜头10的像散场曲值，单位为毫米(mm)。其中，实线表示中心波长(555nm)的光在子午像面的场曲值，虚线表示中心波长(555nm)的光在弧矢像面的场曲值。从图中可知，光经本实施方式的光学镜头10后在弧矢方向和子午方向的像散场曲均较小，即本实施方式的光学镜头10的成像的像散场曲较小，因而本实施方式的光学镜头10的具有较好的光学成像效果。
图29中示出了波长为555nm的光经过第六实施方式的光学镜头10的畸变图。图29的纵坐标表示视场角度，单位为度(°)，横坐标单位为波长为555nm的光经过第六实施方式的光学镜头10的畸变值，单位为％。从图中可知，经本实施方式的光学镜头10后光线的畸变较小，即本实施方式的光学镜头10的成像的畸变较小，因而本实施方式的光学镜头10能够实现较大的视场角的情况下，还具有较小的畸变，从而具有较好的光学成像效果。
本申请实施方式中，通过在成像用的光学镜头10中设置七片镜片，并通过各镜片的参数优化配合，从而使得光学镜头10在能够具有较大的视场范围的情况下，还能够保证光学镜头 10的成像具有较小的畸变。具体的，本申请实施方式中，第一镜片11为向像侧弯曲的镜片，且第一镜片11为具有负光焦度的镜片，从而使得更大视场范围内的景象能够进入光学镜头10内，提高光学镜头10的视场角。并且，本申请实施方式中，第六镜片16和/或第七镜片17的物侧面具有至少一个反曲点，使得第六镜片16和/或第七镜片17具有较好的调整光学畸变、消除像差的作用，从而能够进一步的减小光学镜头10的畸变，从而保证光学镜头10能够具有较大的视场角的情况下，还具有较小的畸变，实现较好的光学效果。一些实施方式中，第一镜片11的物侧面也为具有至少一个反曲点的表面，从而使得第一镜片11也能够具有较好的调整光学畸变、消除像差的作用，从而能够进一步的减小光学镜头10的畸变，保证光学镜头10能够具有较大的视场角的同时，具有较小的畸变。一些实施方式中，还通过第一镜片11的口径D1与光学镜头10的成像面上的有效像素区域对角线长IMH的尺寸配合，从而保证光学镜头10具有较大的视场角的同时，能够具有较高的成像解析力。一些实施方式中，通过限制第一镜片11的焦距f1及第七镜片17的焦距f1与光学镜头10的焦距f，从而使得第一镜片11的光焦度及第七镜片17的光焦度能够得到合理的分配，从而配合修正光学镜头10的像差，减小畸变情况的产生，提高光学镜头10的成像品质。
以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (12)

  1. 一种光学镜头，其特征在于，包括自物侧至像侧依次排列的第一镜片、第二镜片、第三镜片、第四镜片、第五镜片、第六镜片及第七镜片；所述第一镜片为向所述像侧弯曲的镜片，所述第一镜片具有负光焦度；
    所述第一镜片至所述第七镜片中每片镜片均包括朝向所述物侧的物侧面以及朝向所述像侧的像侧面，所述第六镜片与所述第七镜片的物侧面及像侧面均为自由曲面，且所述第六镜片和/或所述第七镜片的物侧面具有至少一个反曲点，所述光学镜头满足下列关系式：
    FOV≥125°；|DIST|≤40％；
    其中，FOV为所述光学镜头的视场角；DIST为所述光学镜头的成像的畸变参数。
  2. 根据权利要求1所述的光学镜头，其特征在于，所述第一镜片的物侧面具有至少一个反曲点。
  3. 根据权利要求1所述的光学镜头，其特征在于，所述光学镜头满足下列关系式：
    0.5≤|D1/IMH|≤1.5；
    其中，D1为所述第一镜片的口径大小，IMH为所述光学镜头的成像面上的有效像素区域对角线长。
  4. 根据权利要求1所述的光学镜头，其特征在于，所述光学镜头满足下列关系式：
    1.5≤F#≤2.8；
    其中，F#为所述光学镜头的光圈F值。
  5. 根据权利要求1所述的光学镜头，其特征在于，所述光学镜头满足下列关系式：0.8≤|TTL/IMH|≤1.5；
    其中，TTL为所述光学镜头的光学总长；IMH为所述光学镜头的成像面上的有效像素区域对角线长。
  6. 根据权利要求1或5所述的光学镜头，其特征在于，所述光学镜头满足下列关系式：
    0.1≤|f/TTL|≤0.4；
    其中，f为所述光学镜头的焦距；TTL为所述光学镜头的光学总长。
  7. 根据权利要求1所述的光学镜头，其特征在于，所述光学镜头满足下列关系式：
    1.5≤|f1/f|≤2；
    f1为所述第一镜片的焦距；f为所述光学镜头的焦距。
  8. 根据权利要求1或7所述的光学镜头，其特征在于，所述光学镜头满足下列关系式：
    2.5≤|f7/f|≤4；
    其中，f7为所述第七镜片的焦距；f为所述光学镜头的焦距。
  9. 根据权利要求1所述的光学镜头，其特征在于，所述第二镜片及所述第三镜片的组合光焦度为正光焦度，所述第四镜片及所述第五镜片的组合光焦度为负光焦度，所述第六镜片及所述第七镜片的组合光焦度为负光焦度。
  10. 根据权利要求1或9所述的光学镜头，其特征在于，所述第四镜片与所述第七镜片均为负光焦度。
  11. 一种摄像头模组，其特征在于，包括感光元件和如权利要求1至10任一项所述的光学镜头，所述感光元件位于所述光学镜头的像侧，光线经所述光学镜头后投射至所述感光元 件。
  12. 一种电子设备，其特征在于，包括图像处理器和如权利要求11所述的摄像头模组，所述图像处理器与所述摄像头模组通信连接，所述摄像头模组用于获取图像数据并将所述图像数据输入到所述图像处理器中，所述图像处理器用于对输出其中的所述图像数据进行处理。
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