WO2025246781A1 - 一种光学镜头、摄像头模组以及电子设备 - Google Patents

一种光学镜头、摄像头模组以及电子设备

Info

Publication number
WO2025246781A1
WO2025246781A1 PCT/CN2025/092068 CN2025092068W WO2025246781A1 WO 2025246781 A1 WO2025246781 A1 WO 2025246781A1 CN 2025092068 W CN2025092068 W CN 2025092068W WO 2025246781 A1 WO2025246781 A1 WO 2025246781A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
optical
optical lens
camera module
light
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/CN2025/092068
Other languages
English (en)
French (fr)
Inventor
祖嘉琦
王新权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honor Device Co Ltd
Original Assignee
Honor Device Co Ltd
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.)
Filing date
Publication date
Application filed by Honor Device Co Ltd filed Critical Honor Device Co Ltd
Publication of WO2025246781A1 publication Critical patent/WO2025246781A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/02—Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length
    • 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
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles

Definitions

  • This application relates to the field of terminal equipment technology, and in particular to an optical lens, a camera module, and an electronic device.
  • telephoto imaging systems for long-distance shooting are widely used in electronic devices.
  • telephoto imaging systems are generally large, occupying a significant amount of internal space and hindering the trend towards thinner and lighter electronic devices.
  • This application provides an optical lens, a camera module, and an electronic device to address the problem that telephoto imaging systems are large in size and occupy a lot of space, which is not conducive to the development trend of thinner and lighter electronic devices.
  • an optical lens comprising a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged sequentially from the object side to the image side, wherein the object side of the first lens is convex and the image side of the first lens is concave; the first lens has positive optical power, the second lens has negative optical power, and the fifth lens has positive optical power.
  • the optical lens satisfies the conditions: TD/TTL ⁇ 0.35, FNO ⁇ 2.6.
  • the optical lens provided in the first aspect of this application has a convex object-side surface and a concave image-side surface. This means that the incident light rays diverge first after passing through the object-side surface of the first lens and then converge after passing through the image-side surface of the first lens, thereby making the light rays reflected to the second lens converge, so that the light rays can pass through subsequent lenses and converge on the imaging surface.
  • the dimensions of the first to fifth lenses satisfy the aforementioned conditions, which helps to reduce the overall length of the lens group, thereby reducing the space occupied by the optical lens within the electronic device. Additionally, it facilitates increasing the entrance pupil diameter of the imaging system, thus improving image quality in low-light environments.
  • the object-side surfaces of both the second and fifth lenses are convex, and the image-side surfaces of both lenses are concave.
  • light rays passing through the second and fifth lenses first diverge and then converge, thereby causing the light rays reflected by the fifth lens to converge on the imaging plane, further reducing the size of the lens group.
  • the distance BFL between the image-side surface of the fifth lens and the imaging surface of the optical lens along the optical axis satisfies the condition: TD/BFL ⁇ 0.48. This increases the back focal length of the imaging system, allowing for more possible optical path configurations after the fourth lens, thus further reducing the overall height of the imaging system.
  • the focal length of the optical lens is f, and the optical lens satisfies the condition: 1.0 ⁇ TTL/f ⁇ 1.2. This allows for a more reasonable setting of the optical lens length, achieving a better balance between the size of the imaging system and image quality. In other words, it reduces the size of the optical lens while still maintaining image quality.
  • the focal length of the first lens is f1
  • the focal length of the fifth lens is f5
  • the optical lens satisfies the condition: 0 ⁇ f1/f5 ⁇ 0.5.
  • the focal length of the second lens is f2
  • the focal length of the third lens is f3
  • the optical lens satisfies the condition: -5 ⁇ f/f2 + f/f3 ⁇ -0.4. This allows for a more reasonable allocation of the optical power of the second and third lenses, resulting in smoother light paths and helping to reduce aberrations in the imaging system.
  • the center thickness of the first lens is CT1
  • the center thickness of the second lens is CT2
  • the center thickness of the third lens is CT3
  • the center thickness of the fourth lens is CT4
  • the center thickness of the fifth lens is CT5.
  • the optical lens satisfies the condition: 0.7 ⁇ CT1/(CT2 + CT3 + CT4 + CT5) ⁇ 1.7. This allows for better control of the thickness of each lens, thereby reducing the volume of the lens group and thus the length of the optical lens.
  • the distance between the first lens and the second lens is T12
  • the distance between the second lens and the third lens is T23
  • the distance between the third lens and the fourth lens is T34
  • the distance between the fourth lens and the fifth lens is T45.
  • the optical lens satisfies the condition: 0.15 ⁇ (T12 + T23 + T34 + T45) / TD ⁇ 0.3. This way, while compressing the volume of the lens group, it also ensures reasonable assembly space between adjacent lenses.
  • the radius of curvature of the object-side surface of the second lens is R21, and the radius of curvature of the image-side surface of the second lens is R22; along the optical axis of the optical lens, the center thickness of the second lens is CT2, and the optical lens satisfies the condition: 0.15 ⁇ R21/R22*CT2 ⁇ 0.4.
  • the radius of curvature of the image-side surface of the second lens is R22
  • the radius of curvature of the object-side surface of the third lens is R31
  • the distance between the second and third lenses along the optical axis of the optical lens is T23
  • the optical lens satisfies the condition: -0.1 ⁇ R22/R31*T23 ⁇ 0.1.
  • the optical lens further includes a prism disposed on the side of the fifth lens away from the first lens.
  • the prism is either a reflective or a transmissive type.
  • the optical lens further includes an aperture stop, which is disposed on the side of the first lens away from the fifth lens.
  • the aperture stop can limit the magnitude of the speed of light, which is beneficial for improving image quality.
  • a camera module comprising an optical lens and an imaging component.
  • the optical lens is the optical lens described in any of the above technical solutions.
  • the imaging component is disposed on the light-emitting side of the optical lens.
  • the camera module provided in the second aspect of this application because it includes the optical lens described in any of the above technical solutions, is able to solve the same technical problem and achieve the same technical effect.
  • the camera module further includes a reflecting prism disposed on the light-incident side of the optical lens.
  • the camera module forms a periscope camera module, which helps to reduce the thickness of the electronic device and increases the shooting distance of the camera module.
  • an electronic device comprising a housing and a camera module.
  • the housing has a light-transmitting opening.
  • the camera module is as described in any of the above technical solutions, and is disposed within the housing with its light-incident surface facing the light-transmitting opening.
  • the electronic device provided in the third aspect of this application since it includes the camera module described in any of the above technical solutions, is able to solve the same technical problem and achieve the same technical effect.
  • Figure 1 is a structural diagram of an electronic device provided in an embodiment of this application.
  • Figure 2 is an exploded view of an electronic device provided in an embodiment of this application.
  • FIG. 3 is a structural diagram of a camera module provided in an embodiment of this application.
  • Figure 4 is a structural diagram of an optical lens provided in an embodiment of this application.
  • Figure 5 is a structural diagram of another optical lens provided in an embodiment of this application.
  • Figure 6 is a structural diagram of another electronic device (including the optical lens shown in Figure 5) provided in an embodiment of this application;
  • Figure 7 is a structural diagram of another optical lens provided in an embodiment of this application.
  • Figure 8 is a structural diagram of another electronic device (including the optical lens shown in Figure 7) provided in an embodiment of this application;
  • Figure 9 is a schematic diagram of the various parameters and dimensions of the optical lens provided in the embodiment of this application.
  • Figure 10 is an axial chromatic difference characteristic curve of a camera module provided in Example 1 of this application;
  • Figure 11 is a field curvature characteristic curve diagram of a camera module provided in Example 1 of this application.
  • Figure 12 is a distortion characteristic curve of a camera module provided in Example 1 of this application.
  • Figure 13 is an axial chromatic difference characteristic curve of the camera module provided in Example 2 of this application.
  • Figure 14 is a field curvature characteristic curve diagram of the camera module provided in Example 2 of the present application.
  • Figure 15 is a distortion characteristic curve of the camera module provided in Example 2 of this application.
  • Figure 16 is an axial chromatic difference characteristic curve of the camera module provided in Example 3 of this application.
  • Figure 17 is a field curvature characteristic curve of the camera module provided in Example 3 of this application.
  • Figure 18 is a distortion characteristic curve of the camera module provided in Example 3 of this application.
  • Figure 19 is an axial chromatic difference characteristic curve of the camera module provided in Example 4 of this application.
  • Figure 20 is a field curvature characteristic curve diagram of the camera module provided in Example 4 of this application.
  • Figure 21 is a distortion characteristic curve of the camera module provided in Example 4 of this application.
  • Figure 22 is an axial chromatic difference characteristic curve of the camera module provided in Example 5 of this application.
  • Figure 23 is a field curvature characteristic curve diagram of the camera module provided in Example 5 of this application.
  • Figure 24 is a distortion characteristic curve of the camera module provided in Example 5 of this application.
  • Figure 25 is an axial chromatic difference characteristic curve of the camera module provided in Example Six of this application.
  • Figure 26 is a field curvature characteristic curve of a camera module provided in Example Six of this application.
  • Figure 27 is a distortion characteristic curve of a camera module provided in Example Six of this application.
  • first,” “second,” etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with “first,” “second,” etc., may explicitly or implicitly include one or more of that feature.
  • connection shall be interpreted broadly.
  • connection may be a fixed connection, a detachable connection, or an integral part; it may be a direct connection or an indirect connection through an intermediate medium.
  • the optical axis is the direction in which light rays travel through an optical system, with the principal ray serving as a reference for the central field of view.
  • the optical axis is a ray that passes perpendicularly through the center of an ideal lens.
  • an ideal convex lens should cause all the light rays to converge at a single point behind the lens; this point is the focal point.
  • Focal length also known as focal length, is a measure of the convergence or divergence of light in an optical system. It refers to the distance from the optical center of a lens to the focal point when a distant object is focused on the focal plane.
  • the optical center is the point on the lens where the direction of light propagation remains unchanged regardless of the direction of light passing through it.
  • the focal length is fixed.
  • changes in the optical center result in changes in the focal length, therefore the focal length can be adjusted.
  • the aperture is a device used to control the amount of light passing through the lens and entering the sensor inside the camera body; it is usually located inside the lens.
  • the aperture f-number is a relative value derived from the lens's focal length divided by its light-gathering diameter. A smaller f-number allows more light to enter the lens within the same time frame. A larger f-number results in a shallower depth of field, blurring the background and creating an effect similar to a telephoto lens.
  • Optical power is equal to the difference between the image-side convergence and the object-side convergence, and it characterizes the ability of an optical system to deflect light rays.
  • optical power is generally expressed as the reciprocal of the image-side focal length.
  • Optical power characterizes the ability of an optical system to refract an incident parallel beam of light. The higher the optical power value, the more pronounced the refraction of the parallel beam. When the optical power is greater than 0, the refraction is converging; when the optical power is less than 0, the refraction is diverging; when the optical power is equal to 0, it is plane refraction, in which case the axial parallel beam remains axially parallel after refraction, and no refraction occurs.
  • Total track length refers to the total length from the lens head to the imaging plane, and is a major factor in determining the camera height.
  • the Abbe number also known as the dispersion coefficient, is the ratio of the difference in refractive index of an optical material at different wavelengths, representing the degree of dispersion of the material.
  • the field of view (FOV) in optical instruments is the angle between the two edges of the lens, representing the maximum range through which the image of the target object can pass through the lens.
  • the size of the FOV determines the field of view of the optical instrument; a larger FOV results in a wider field of view but a lower optical magnification.
  • the object side and the image side are defined by the lens.
  • the side where the subject is locked is called the object side, and the surface of the lens closest to the object side can be called the object side surface.
  • the side where the image of the subject is located is called the image side, and the surface of the lens closest to the image side can be called the image side surface.
  • An aperture stop is the edge, frame, or specially designed perforated barrier of an optical element in an optical assembly used to limit the size of an imaging beam or a unit of imaging space.
  • An aperture stop is an instrument that restricts the imaging of a point light source along the optical axis.
  • the aperture stop limits the size of the imaging beam.
  • the presence of the aperture stop directly affects image quality, including image sharpness, brightness, and depth of field.
  • the entrance pupil is the common entrance for light beams emitted from all points on the surface of an object.
  • the entrance pupil diameter is the effective aperture that restricts the incident light beam.
  • Aberration refers to the difference between the result obtained by non-paraxial ray tracing and paraxial ray tracing in a real optical system.
  • Aberrations are mainly classified into spherical aberration, coma, field curvature, astigmatism, distortion, chromatic aberration, and wave aberration.
  • Color difference refers to the change in the color of light.
  • Distortion also known as image distortion, refers to the degree of distortion in the image formed by an optical system relative to the object itself. Distortion occurs due to the spherical aberration of the aperture. The height of the intersection point between the principal ray from different fields of view and the Gaussian image plane is not equal to the ideal image height; this difference is the distortion. Therefore, distortion only changes the imaging position of an off-axis object point on the ideal plane, causing a distortion in the image shape, but it does not affect the image's sharpness.
  • Optical distortion refers to the degree of deformation calculated in optical theory.
  • Telephoto lenses also known as telescopic lenses or telephoto lenses, are essential for photographing distant objects. They effectively capture details of distant scenes and can photograph subjects that are difficult to approach. Especially in wildlife photography, a suitable telephoto lens can provide photographers with numerous creative opportunities.
  • telephoto lenses due to their long focal length, telephoto lenses require significant axial space for optical path adjustments, resulting in an excessively large overall optical length. This makes it difficult to miniaturize the lens design, thus hindering the trend towards thinner and lighter mobile electronic devices.
  • the electronic device can be a portable electronic device or other types of electronic devices.
  • the electronic device can be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a monitor, a camera, a personal computer, a laptop computer, a wearable device, etc.
  • PDA personal digital assistant
  • the following description uses a mobile phone as an example.
  • Figure 1 is a structural diagram of the electronic device 10 provided in an embodiment of this application
  • Figure 2 is an exploded view of the electronic device 10 provided in an embodiment of this application.
  • the electronic device 10 is a mobile phone, and the electronic device 10 can have an approximately rectangular plate-like structure.
  • the electronic device 10 may include a display module 100, a housing 200, a circuit board 300, and a camera module 400.
  • an XYZ coordinate system is established, defining the width direction of electronic device 10 as the X-axis, the length direction as the Y-axis, and the thickness direction as the Z-axis. It is understood that the coordinate system of electronic device 10 can be flexibly set according to actual needs; this application only provides an example and should not be considered a specific limitation thereof.
  • Figures 1 and 2 only schematically show some components included in electronic device 10; the actual shape, size, position, and structure of these components are not limited by Figures 1 and 2.
  • the aforementioned display module 100 is used to display images, videos, etc.
  • the display module 100 may include a light-transmitting cover 110 and a display screen 120 (also known as a display panel), with the light-transmitting cover 110 and the display screen 120 stacked together.
  • the material of the light-transmitting cover 110 includes, but is not limited to, glass.
  • the light-transmitting cover 110 can be a common light-transmitting cover 110, used to protect the display screen 120 from damage caused by external forces and to provide dust protection.
  • the light-transmitting cover 110 can also be a touch-enabled light-transmitting cover 110, enabling the electronic device 10 to have touch functionality, thus making it more convenient for users. Therefore, this application does not impose any special limitations on the specific material of the light-transmitting cover 110.
  • the aforementioned display screen 120 can be a flexible display screen 120 or a rigid display screen 120.
  • the display screen 120 can be an organic light-emitting diode (OLED) display screen 120, an active-matrix organic light-emitting diode (AMOLED) display screen 120, a mini light-emitting diode display screen 120, a micro light-emitting diode display screen 120, a micro organic light-emitting diode display screen 120, a quantum dot light-emitting diode (QLED) display screen 120, or a liquid crystal display (LCD) display screen 120.
  • OLED organic light-emitting diode
  • AMOLED active-matrix organic light-emitting diode
  • mini light-emitting diode display screen 120 a mini light-emitting diode display screen 120
  • a micro light-emitting diode display screen 120 a micro organic light-emitting diode display screen 120
  • the aforementioned housing 200 is used to protect the electronic components inside the electronic device 10.
  • the housing 200 may include a rear cover 210 and a frame 220.
  • the rear cover 210 is located on the side of the display screen 120 away from the light-transmitting cover plate 110 and is stacked with the light-transmitting cover plate 110 and the display screen 120.
  • the frame 220 is located between the light-transmitting cover plate 110 and the rear cover 210.
  • the frame 220 is fixed to the rear cover 210.
  • the frame 220 can be fixed to the rear cover 210 by means of adhesive bonding, threaded connection, welding, snap-fit, etc.; alternatively, the frame 220 can also be integrally formed with the rear cover 210, that is, the frame 220 and the rear cover 210 form a single structural component.
  • the light-transmitting cover plate 110 can be glued to the frame 220, so that the light-transmitting cover plate 110, the rear cover 210, and the frame 220 form a receiving cavity inside the electronic device 10, within which the aforementioned circuit board 300 and electronic components are disposed.
  • the housing 200 may further include a middle plate 230, which is disposed within the accommodating cavity and located on the side of the display screen 120 away from the light-transmitting cover 110.
  • the middle plate 230 is fixedly connected to the frame 220 to form the mid-frame of the electronic device 10.
  • the middle plate 230 and the frame 220 can be fixedly connected by adhesive, threaded connection, welding, snap-fit, or other methods; alternatively, the middle plate 230 and the frame 220 can be an integrally formed structure, i.e., the middle plate 230 and the frame 220 form a single structural component.
  • the middle plate 230 divides the accommodating cavity into two independent spaces. One space is located between the light-transmitting cover 110 and the middle plate 230, and the display screen 120 is located within this space. The other space is located between the middle plate 230 and the rear cover 210, and the circuit board 300 is located within this space.
  • the aforementioned circuit board 300 is used to house electronic components inside the electronic device 10 and to achieve electrical connections between these components.
  • the circuit board 300 can be fixed to the middle plate 230 by means of adhesive bonding, threaded connection, soldering, snap-fitting, etc. Therefore, this application does not impose any special limitations on the fixing method of the circuit board 300.
  • electronic components are used to implement various functions of the electronic device 10.
  • electronic components may include the aforementioned camera module 400, control chips (e.g., system-on-chip, SOC), graphics processing unit (GPU), universal flash storage (UFS), flash module, and capacitors, resistors, inductors, etc.
  • control chips e.g., system-on-chip, SOC
  • GPU graphics processing unit
  • UFS universal flash storage
  • flash module and capacitors, resistors, inductors, etc.
  • the aforementioned camera module 400 is used to capture video or images.
  • the camera module 400 may include a main camera, a wide-angle camera, and a telephoto camera, and its structural form may include upright and periscope types.
  • the camera module 400 can be electrically connected to the aforementioned circuit board 300 via a flexible connector (e.g., an FPC board, flexible printed circuit board 300).
  • the camera module 400 has a light-incident surface, which can serve as the light-incident surface for the lens inside the camera module 400.
  • the light-incident surface of the camera module 400 faces the rear cover 210, which has a light-transmitting opening 211.
  • the camera module 400 is positioned at the light-transmitting opening 211, with its light-incident surface facing the opening 211.
  • the electronic device 10 may also include a camera decorative cover 500, which is fixed to the light-transmitting opening 211.
  • the camera decorative cover 500 has a light-transmitting window 510, with the light-incident surface of the camera module 400 facing the light-transmitting window 510, allowing external light to pass through the light-transmitting window 510 and enter the camera module 400, thereby enabling the electronic device 10 to capture videos or images.
  • the camera module 400 described above can be positioned near one edge of the back cover 210, as shown in Figures 1 and 2. In other examples, the camera module 400 can also be positioned at other locations on the back cover 210, such as the central area of the upper side of the back cover 210. Therefore, this application does not impose any special limitation on the relative position of the camera module 400 and the back cover 210.
  • the camera module 400 may include an optical lens 410 and an imaging component 420.
  • the optical lens 410 may include multiple lenses, and the imaging component 420 may include a filter 421 and an image sensor 422.
  • the surface of the image sensor 422 facing the filter 421 is the imaging surface.
  • the camera module 400 can be a telephoto camera, meaning its optical lens 410 is a telephoto lens with a focal length greater than that of a standard lens. Therefore, the camera module 400 can capture images of distant objects or scenes, broadening the shooting scenarios of the electronic device 10 and improving the user experience.
  • telephoto lenses their larger focal length requires more axial space, resulting in a larger overall optical length. Therefore, applying a telephoto lens to the electronic device 10 occupies a significant amount of space, hindering its slimness and lightweight design. For example, using a telephoto lens in a direct-lit camera module 400 would result in a larger dimension of the camera module 400 along the thickness direction (i.e., the Z-axis direction) of the electronic device 10, thus making it difficult to reduce the overall thickness of the electronic device 10.
  • FIG 4 is a structural diagram of an optical lens 410 provided in an embodiment of this application.
  • the optical lens 410 can be applied to the camera module 400 or electronic device 10.
  • the optical lens 410 includes a first lens 411, a second lens 412, a third lens 413, a fourth lens 414, and a fifth lens 415 arranged sequentially from the object side to the image side.
  • the object side of the first lens 411 is convex, and the image side of the first lens 411 is concave.
  • the first lens 411 has positive optical power
  • the second lens 412 has negative optical power
  • the fifth lens 415 has positive optical power.
  • the convex surface diverges and reflects light to the concave surface, while the concave surface converges and reflects light to adjacent lenses.
  • the convex surface of a lens has the ability to diverge light rays, and the concave surface has the ability to converge them.
  • the incident light rays diverge first after passing through the object side of the first lens 411, and then converge after passing through the image side of the first lens 411, so that the light rays reflected to the second lens 412 are converging, so that the light rays can pass through the subsequent lenses and converge on the imaging surface.
  • the object-side surfaces of the second lens 412 and the fifth lens 415 may both be convex, and the image-side surfaces of the second lens 412 and the fifth lens 415 may both be concave. This ensures that the light rays passing through the second lens 412 and the fifth lens 415 diverge first and then converge, thereby enabling the light rays emitted from the fifth lens 415 to converge on the imaging surface, which is beneficial for further reducing the length of the lens group.
  • the object-side surface and image-side surface of the third lens 413 and the fourth lens 414 described above can be concave or convex. They can have positive or negative optical power. Therefore, the embodiments of this application do not impose special limitations on the specific structure of the third lens 413 and the fourth lens 414.
  • Figure 5 is a structural diagram of another optical lens 410 provided in an embodiment of this application
  • Figure 6 is a structural diagram of another electronic device 10 (including the optical lens 410 provided in Figure 5) provided in an embodiment of this application.
  • the optical lens 410 may further include a prism 416, which is disposed on the side of the fifth lens 415 away from the first lens 411, i.e., the prism 416 is disposed on the image side of the fifth lens 415.
  • the optical lens 410 can adapt to the structural requirements of different electronic devices 10 on the camera module 400.
  • the propagation direction of the light emitted from the fifth lens 415 can be changed by the prism 416, so that the propagation directions of the incident light and the outgoing light of the prism 416 are different.
  • the incident light of the prism 416 is in the same direction as the optical axis of the plurality of lenses, and the outgoing light of the prism 416 propagates in a direction parallel to the XY plane.
  • Figure 7 is a structural diagram of another optical lens 410 provided in an embodiment of this application
  • Figure 8 is a structural diagram of another electronic device 10 (including the optical lens shown in Figure 7) provided in an embodiment of this application.
  • the aforementioned prism 416 can also be a transmissive type, that is, the prism 416 is applied in a periscope-type camera module 400, that is, the camera module 400 shown in Figure 3 also includes a reflecting prism 423, and the optical lens 410 is disposed on the light-emitting side of the reflecting prism 423. Under the action of the prism 416, it is beneficial to further increase the total optical length, thereby increasing the shooting distance of the camera module 400.
  • the periscope-type camera module 400 is also beneficial to reduce the thickness of the electronic device 10, which is more conducive to the thinning of the electronic device 10.
  • the lens of the optical lens 410 can be made of glass, which has advantages such as high transmittance, low scattering and absorption rates, and good chemical stability.
  • glass can be made of silicates, borosilicates, oxalates, fluorides, etc.
  • the lens of the optical lens 410 can also be made of plastic. This has advantages such as low cost, easy processing, and light weight.
  • PMMA polymethyl methacrylate
  • PC polycarbonate
  • first lens 411, second lens 412, third lens 413, fourth lens 414, and fifth lens 415 included in the aforementioned optical lens 410 can be made of the same material or different materials.
  • first lens 411 and second lens 412 can be made of glass, while the third lens 413, fourth lens 414, and fifth lens 415 can be made of plastic. Therefore, this application does not impose any special limitations on the lens material and structural distribution of the optical lens 410.
  • the lens group structure consisting of multiple lenses (including the first lens 411, the second lens 412, the third lens 413, the fourth lens 414, and the fifth lens 415) not only meets the performance and imaging quality requirements of the optical lens 410, such as focal length, spherical aberration, astigmatism, and field curvature, but also has enough parameter variables to optimize the layout and structure of the optical lens 410, so as to further shorten the total optical length of the optical lens 410 under the premise of the same imaging quality.
  • Figure 9 is a schematic diagram of the various parameters and dimensions of the optical lens 410 provided in this embodiment.
  • the left side of the figure represents the object side
  • the right side represents the image side
  • the dashed line represents the optical axis.
  • the maximum distance between the object side of the first lens 411 and the image side of the fifth lens 415 is TD
  • the maximum distance between the object side of the first lens 411 and the imaging plane of the optical lens 410 is TTL (i.e., the aforementioned total optical length)
  • the aperture value of the lens is FNO.
  • the optical lens 410 satisfies the conditions: TD/TTL ⁇ 0.35, FNO ⁇ 2.6.
  • the TD/TTL value can be 0.1, 0.12, 0.15, 0.18, 0.2, 0.22, 0.24, 0.26, 0.28, 0.3, 0.31, 0.32, 0.33, 0.34, etc.
  • FNO can be 2.59, 2.55, 2.53, 2.51, 2.5, 2.49, 2.48, 2.46, 2.44, 2.42, 2.4, 2.38, 2.35, 2.3, 2.2, 2.1, 2.0, 1.8, 1.5, etc.
  • the dimensions of the first lens 411 to the fifth lens 415 meet the above conditions, which helps to reduce the overall length of the lens group, thereby reducing the space occupied by the optical lens 410 within the electronic device 10. It also helps to increase the entrance pupil diameter of the imaging system, thereby improving the imaging quality in low-light environments.
  • the distance BFL between the image-side surface of the fifth lens 415 and the imaging surface of the lens is preferably such that TD/BFL ⁇ 0.48.
  • This is beneficial for increasing the back focal length of the imaging system of the optical lens 410, allowing for more possible optical path configurations after the fourth lens 414, thereby further reducing the overall height of the imaging system.
  • the value of TD/BFL can be 0.47, 0.46, 0.45, 0.43, 0.41, 0.40, 0.38, 0.36, 0.34, 0.32, 0.3, 0.28, 0.25, 0.2, 0.1, etc.
  • the focal length of the optical lens 410 is f
  • the focal length of the first lens 411 is f1
  • the focal length of the second lens 412 is f2
  • the focal length of the third lens 413 is f3
  • the focal length of the fourth lens 414 is f4
  • the focal length of the fifth lens 415 is f5.
  • the optical lens 410 can satisfy the condition: 1.0 ⁇ TTL/f ⁇ 1.2.
  • the TTL/f value can be 1.05, 1.06, 1.08, 1.1, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19, etc. This allows for a more reasonable setting of the length of the optical lens 410, achieving a better balance between the size of the imaging system and image quality. In other words, it ensures image quality while reducing the size of the optical lens 410.
  • the aforementioned optical lens 410 also satisfies the condition: 0 ⁇ f1/f5 ⁇ 0.5.
  • the values of f1/f5 can be 0.01, 0.01, 0.05, 0.1, 0.11, 0.15, 0.2, 0.25, 0.27, 0.3, 0.35, 0.4, 0.41, 0.42, 0.43, 0.45, 0.47, 0.48, etc. This allows for a more reasonable allocation of the optical power of the first lens 411 and the fifth lens 415, enabling the optical fiber to be properly deflected at the first lens 411 and the fifth lens 415, which helps reduce aberrations and sensitivity of the imaging system.
  • the aforementioned optical lens 410 can also satisfy the condition: -5 ⁇ f/f2 + f/f3 ⁇ -0.4.
  • the values of f/f2 + f/f3 can be -4.5, -4.3, -4.17, -4.11, -4, -3.5, -3, -2, -1.5, -1.09, -0.92, -0.7, -0.54, -0.5, -0.41, etc. This allows for a more rational allocation of the optical power of the second lens 412 and the third lens 413, resulting in smoother light paths and thus better reducing aberrations in the imaging system.
  • the center thickness of the first lens 411 is CT1
  • the center thickness of the second lens 412 is CT2
  • the center thickness of the third lens 413 is CT3
  • the center thickness of the fourth lens 414 is CT4
  • the center thickness of the fifth lens 415 is CT5.
  • the distance between the first lens 411 and the second lens 412 is T12
  • the distance between the second lens 412 and the third lens 413 is T23
  • the distance between the third lens 413 and the fourth lens 414 is T34
  • the distance between the fourth lens 414 and the fifth lens 415 is T45.
  • the aforementioned optical lens 410 can satisfy the condition: 0.7 ⁇ CT1/(CT2+CT3+CT4+CT5) ⁇ 1.7.
  • CT1/(CT2+CT3+CT4+CT5) can be 0.72, 0.8, 0.82, 0.9, 1, 1.1, 1.15, 1.2, 1.34, 1.4, 1.5, 1.53, 1.6, etc. This facilitates control over the thickness of each lens, thereby reducing the volume of the lens group and thus the length of the optical lens 410.
  • the optical lens 410 can also satisfy the condition: 0.15 ⁇ (T12 + T23 + T34 + T45) / TD ⁇ 0.3.
  • the value of (T12 + T23 + T34 + T45) / TD can be 0.16, 0.17, 0.18, 0.19, 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, etc. In this way, while compressing the volume of the lens group, it is still possible to ensure a reasonable assembly space between adjacent lenses.
  • the center thickness of the lens and the distance between two adjacent lenses are based on the point through which the optical axis passes on the lens. That is, the distance through which the optical axis passes through the lens is the center thickness of the lens, and the length of the optical axis between two adjacent lenses is the distance between the two adjacent lenses.
  • the radius of curvature of the object side of the second lens 412 is R21
  • the radius of curvature of the image side of the second lens 412 is R22.
  • the optical lens 410 can satisfy the condition: 0.15 ⁇ R21/R22*CT2 ⁇ 0.4.
  • the value of R21/R22*CT2 can be 0.16, 0.17, 0.18, 0.19, 0.2, 0.23, 0.25, 0.26, 0.28, 0.3, 0.31, 0.35, 0.38, etc.
  • the light rays passing through the first lens 411 can be smoothly transitioned to subsequent lenses, which is beneficial for correcting the aberrations introduced by the first lens 411, thereby improving the image quality.
  • the radius of curvature of the object-side surface of the third lens 413 is R31
  • the optical lens 410 can also satisfy the condition: -0.1 ⁇ R22/R31*T23 ⁇ 0.1.
  • the value of R22/R31*T23 can be -0.09, -0.08, -0.07--0.06, -0.05, -0.01, 0, 0.0005, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.091, etc.
  • Example 1 a camera module 400 is provided, which includes the aforementioned optical lens 410.
  • the parameters of the optical lens 410 (including the values of the aforementioned conditional expressions) are shown in Table 1.
  • Figure 10 is an axial chromatic difference characteristic curve of the camera module 400 provided in Example 1 of the present application embodiment.
  • Figure 11 is a field curvature characteristic curve of the camera module 400 provided in Example 1 of the present application embodiment.
  • Figure 12 is a distortion characteristic curve of the camera module 400 provided in Example 1 of the present application embodiment.
  • the camera module 400 Since the axial chromatic aberration, field curvature, and distortion curves of the camera module 400 are smaller off the zero point on the vertical axis, as can be seen from Figures 10, 11, and 12, the camera module 400 provided in this example has smaller axial chromatic aberration, field curvature, and distortion, and has better optical performance, thereby ensuring that the camera module 400 has good imaging quality.
  • Example 2 a camera module 400 is provided, which includes the aforementioned optical lens 410.
  • the parameters of the optical lens 410 (including the values of the aforementioned conditional expressions) are shown in Table 5.
  • Figure 13 is an axial chromatic difference characteristic curve of the camera module 400 provided in Example 2 of the present application embodiment.
  • Figure 14 is a field curvature characteristic curve of the camera module 400 provided in Example 2 of the present application embodiment.
  • Figure 15 is a distortion characteristic curve of the camera module 400 provided in Example 2 of the present application embodiment.
  • the camera module 400 Since the axial chromatic aberration, field curvature, and distortion of the camera module 400 are smaller on the vertical axis than zero, as can be seen from Figures 13, 14, and 15, the camera module 400 provided in this example has smaller axial chromatic aberration, field curvature, and distortion, and better optical performance, thus ensuring that the camera module 400 has good imaging quality.
  • Example 3 a camera module 400 is provided, which includes the aforementioned optical lens 410.
  • the parameters of the optical lens 410 (including the values of the aforementioned conditional expressions) are shown in Table 9.
  • Figure 16 is an axial chromatic difference characteristic curve of the camera module 400 provided in Example 3 of the present application embodiment.
  • Figure 17 is a field curvature characteristic curve of the camera module 400 provided in Example 3 of the present application embodiment.
  • Figure 18 is a distortion characteristic curve of the camera module 400 provided in Example 3 of the present application embodiment.
  • the camera module 400 Since the axial chromatic aberration, field curvature, and distortion of the camera module 400 are smaller on the vertical axis than zero, as can be seen from Figures 16, 17, and 18, the camera module 400 provided in this example has smaller axial chromatic aberration, field curvature, and distortion, and better optical performance, thus ensuring that the camera module 400 has good imaging quality.
  • Example 4 a camera module 400 is provided, which includes the aforementioned optical lens 410.
  • the parameters of the optical lens 410 are shown in Table 13.
  • Figure 19 is an axial chromatic difference characteristic curve of the camera module 400 provided in Example 4 of the present application embodiment.
  • Figure 20 is a field curvature characteristic curve of the camera module 400 provided in Example 4 of the present application embodiment.
  • Figure 21 is a distortion characteristic curve of the camera module 400 provided in Example 4 of the present application embodiment.
  • the camera module 400 Since the axial chromatic aberration, field curvature, and distortion of the camera module 400 are smaller on the vertical axis than zero, as can be seen from Figures 19, 20, and 21, the camera module 400 provided in this example has smaller axial chromatic aberration, field curvature, and distortion, and better optical performance, thus ensuring that the camera module 400 has good imaging quality.
  • Example 5 a camera module 400 is provided, which includes the aforementioned optical lens 410.
  • the parameters of the optical lens 410 are shown in Table 17.
  • Figure 22 is an axial chromatic difference characteristic curve of the camera module 400 provided in Example 5 of the present application embodiment.
  • Figure 23 is a field curvature characteristic curve of the camera module 400 provided in Example 5 of the present application embodiment.
  • Figure 24 is a distortion characteristic curve of the camera module 400 provided in Example 5 of the present application embodiment.
  • the camera module 400 Since the axial chromatic aberration, field curvature, and distortion of the camera module 400 are smaller on the vertical axis than zero, as can be seen from Figures 22, 23, and 24, the camera module 400 provided in this example has smaller axial chromatic aberration, field curvature, and distortion, and better optical performance, thus ensuring that the camera module 400 has good imaging quality.
  • Example 6 a camera module 400 is provided, which includes the aforementioned optical lens 410.
  • the parameters of the optical lens 410 are shown in Table 21.
  • Figure 25 is an axial chromatic difference characteristic curve of the camera module 400 provided in Example 6 of the present application embodiment.
  • Figure 26 is a field curvature characteristic curve of the camera module 400 provided in Example 6 of the present application embodiment.
  • Figure 27 is a distortion characteristic curve of the camera module 400 provided in Example 6 of the present application embodiment.
  • the camera module 400 Since the axial chromatic aberration, field curvature, and distortion of the camera module 400 are smaller on the vertical axis than zero, as can be seen from Figures 25, 26, and 27, the camera module 400 provided in this example has smaller axial chromatic aberration, field curvature, and distortion, and better optical performance, thus ensuring that the camera module 400 has good imaging quality.

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Abstract

本申请提供一种光学镜头、摄像头模组以及电子设备，涉及终端设备技术领域。用于解决长焦成像系统体积较大，占用空间大，不利于电子设备的轻薄化发展趋势的问题。上述光学镜头，该光学镜头包括由物侧至像侧依次设置的第一透镜、第二透镜、第三透镜、第四透镜以及第五透镜，第一透镜的物侧面为凸面，第一透镜的像侧面为凹面；第一透镜具有正光焦度，第二透镜具有负光焦度，第五透镜具有正光焦度。沿光学镜头的光轴方向，第一透镜的物侧面与第五透镜的像侧面之间的最大距离为TD，第一透镜的物侧面与光学镜头的成像面之间的最大距离为TTL，光学镜头的光圈值为FNO，光学镜头满足条件：TD/TTL＜0.35，FNO＜2.6。

Description

一种光学镜头、摄像头模组以及电子设备
本申请要求于2024年5月31日提交国家知识产权局、申请号为202410711057.6、发明名称为“一种光学镜头、摄像头模组以及电子设备”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
本申请涉及终端设备技术领域，尤其涉及一种光学镜头、摄像头模组以及电子设备。
背景技术
随着电子设备(例如，手机)的快速发展，用户对电子设备拍摄水平的要求也越来越高，因此，用于远距离拍摄的长焦成像系统被广泛应用于电子设备。但是，长焦成像系统一般体积较大，导致占用电子设备内部空间较大，不利于电子设备的轻薄化发展趋势。
发明内容
本申请实施例提供一种光学镜头、摄像头模组以及电子设备，用于解决长焦成像系统体积较大，占用空间大，不利于电子设备的轻薄化发展趋势的问题。
为达到上述目的，本申请的实施例采用如下技术方案：
第一方面，提供了一种光学镜头，该光学镜头包括由物侧至像侧依次设置的第一透镜、第二透镜、第三透镜、第四透镜以及第五透镜，第一透镜的物侧面为凸面，第一透镜的像侧面为凹面；第一透镜具有正光焦度，第二透镜具有负光焦度，第五透镜具有正光焦度；
沿光学镜头的光轴方向，第一透镜的物侧面与第五透镜的像侧面之间的最大距离为TD，第一透镜的物侧面与光学镜头的成像面之间的最大距离为TTL，光学镜头的光圈值为FNO，光学镜头满足条件：TD/TTL＜0.35，FNO＜2.6。
本申请第一方面提供的光学镜头，由于第一透镜的物侧面为凸面，第一透镜的像侧面为凹面，即入射光线经过第一透镜的物侧面先发散，然后经过第一透镜的像侧面后会聚，从而使反射至第二透镜的光线呈会聚状，以便于光线经过后续透镜并会聚在成像面上。
此外，第一透镜至第五透镜的尺寸满足上述条件，有利于减小透镜组的整体长度，从而有利于减小光学镜头在电子设备内占用的空间。并且，有利于增大成像系统的入瞳直径，以提升在暗光环境下的成像质量。
本申请第一方面的一种可能的实现方式中，第二透镜和第五透镜的物侧面均为凸面，第二透镜和第五透镜的像侧面均为凹面。在该结构下，经过第二透镜和第五透镜的光线均先发散，后会聚，从而使得经过第五透镜反射的光线会聚在成像面上，以更进一步减小透镜组的尺寸。
本申请第一方面的一种可能的实现方式中，沿光学镜头的光轴方向，第五透镜的像侧面与光学镜头的成像面之间的距离BFL，光学镜头满足条件：TD/BFL＜0.48。这样一来，有利于增加光学镜头的成像系统的后焦长度，使得第四透镜之后的光路具有更多可能的形态，从而更加有利于减小成像系统的整体高度。
本申请第一方面的一种可能的实现方式中，光学镜头的焦距为f，光学镜头满足条件：1.0＜TTL/f＜1.2。这样一来，能够更加合理的设置光学镜头的长度尺寸，使成像系统的尺寸与成像质量得到更好的平衡。也即是，在减小光学镜头尺寸的同时，还能够保证成像质量。
本申请第一方面的一种可能的实现方式中，第一透镜的焦距为f1，第五透镜的焦距为f5，光学镜头满足条件：0＜f1/f5＜0.5。这样一来，能够更加合理的分配第一透镜和第五透镜的光焦度，以使光纤在第一透镜和第五透镜处合理偏折，有利于降低成像系统的像差以及敏感度。
本申请第一方面的一种可能的实现方式中，第二透镜的焦距为f2，第三透镜的焦距为f3，光学镜头满足条件：-5＜f/f2+f/f3＜-0.4。这样一来，能够更加合理的分配第二透镜和第三透镜的光焦度，使得光线走势平滑，有利于降低成像系统的像差。
本申请第一方面的一种可能的实现方式中，沿光学镜头的光轴方向，第一透镜的中心厚度为CT1，第二透镜的中心厚度为CT2，第三透镜的中心厚度为CT3，第四透镜的中心厚度为CT4，第五透镜的中心厚度为CT5，光学镜头满足条件：0.7＜CT1/(CT2+CT3+CT4+CT5)＜1.7。这样一来，能够有利于控制各个透镜的厚度尺寸，从而缩小透镜组的体积，以减小光学镜头的长度尺寸。
本申请第一方面的一种可能的实现方式中，沿光学镜头的光轴方向，第一透镜与第二透镜之间的距离为T12，第二透镜与第三透镜之间的距离为T23,第三透镜与第四透镜之间的距离为T34，第四透镜与第五透镜之间的距离为T45，光学镜头满足条件：0.15＜(T12+T23+T34+T45)/TD＜0.3。这样一来，在压缩透镜组的体积的同时，还能够保证相邻透镜之间具有合理的装配空间。
本申请第一方面的一种可能的实现方式中，第二透镜的物侧面的曲率半径为R21，第二透镜的像侧面的曲率半径为R22；沿光学镜头的光轴方向，第二透镜的中心厚度为CT2，光学镜头满足条件：0.15＜R21/R22*CT2＜0.4。这样一来，通过有效控制第二透镜的形状，使经过第一透镜的光线良好的过渡至后续透镜，有利于矫正第一透镜引入的像差，从而提升成像质量。
本申请第一方面的一种可能的实现方式中，第二透镜的像侧面的曲率半径为R22，第三透镜的物侧面的曲率半径为R31；沿光学镜头的光轴方向，第二透镜与第三透镜之间的距离为T23，光学镜头满足条件：-0.1＜R22/R31*T23＜0.1。这样一来，通过控制第二透镜和第三透镜相邻表面的形状，从而有利于第二透镜出射的光线顺利进入第三透镜，以矫正部分像差，提升成像质量。
本申请第一方面的一种可能的实现方式中，光学镜头还包括棱镜，棱镜设置于第五透镜远离第一透镜的一侧。在该结构下，能够通过棱镜改变第五透镜射出的光线的路径，从而适应不同的摄像头模组。
本申请第一方面的一种可能的实现方式中，棱镜为反射型或透射型。
本申请第一方面的一种可能的实现方式中，光学镜头还包括光阑，光阑设置于第一透镜远离第五透镜的一侧。在该结构下，光阑能够限制呈现光速的大小，有利于提升成像质量。
第二方面，提供了一种摄像头模组，该摄像头模组包括光学镜头和成像组件。光学镜头为如上任一技术方案所述的光学镜头。成像组件设置于光学镜头的出光侧。
本申请第二方面提供的摄像头模组，由于包括如上任一技术方案所述的光学镜头，因此，能够解决相同的技术问题，并取得相同的技术效果。
本申请第二方面的一种可能的实现方式中，摄像头模组还包括反射棱镜，反射棱镜设置于光学镜头的入光侧。在该结构下，摄像头模组形成潜望式摄像头模组，从而有利于减小电子设备的厚度尺寸，并有利于增加摄像头模组的拍摄距离。
第三方面，提供了一种电子设备，该电子设备包括外壳和摄像头模组。外壳上开设有透光口。摄像头模组为如上任一技术方案所述的摄像头模组，摄像头模组设置于外壳内，且摄像头模组的入光面朝向透光口。
本申请第三方面提供的电子设备，由于包括如上任一技术方案所述的摄像头模组，因此，能够解决相同的技术问题，并取得相同的技术效果。
附图说明
图1为本申请实施例提供的一种电子设备的结构图；
图2为本申请实施例提供的一种电子设备的爆炸图；
图3为本申请实施例提供的一种摄像头模组的结构图；
图4为本申请实施例提供的一种光学镜头的结构图；
图5为本申请实施例提供的另一种光学镜头的结构图；
图6为本申请实施例提供的另一种电子设备(包括图5提供的光学镜头)的结构图；
图7为本申请实施例提供的又一种光学镜头的结构图；
图8为本申请实施例提供的又一种电子设备(包括图7提供的光学镜头)的结构图；
图9为本申请实施例提供的光学镜头的各项参数尺寸示意图；
图10为本申请实施例的示例一提供的摄像头模组的轴向色差特征曲线图；
图11为本申请实施例的示例一提供的摄像头模组的场曲特征曲线图；
图12为本申请实施例的示例一提供的摄像头模组的畸变特征曲线图；
图13为本申请实施例的示例二提供的摄像头模组的轴向色差特征曲线图；
图14为本申请实施例的示例二提供的摄像头模组的场曲特征曲线图；
图15为本申请实施例的示例二提供的摄像头模组的畸变特征曲线图；
图16为本申请实施例的示例三提供的摄像头模组的轴向色差特征曲线图；
图17为本申请实施例的示例三提供的摄像头模组的场曲特征曲线图；
图18为本申请实施例的示例三提供的摄像头模组的畸变特征曲线图；
图19为本申请实施例的示例四提供的摄像头模组的轴向色差特征曲线图；
图20为本申请实施例的示例四提供的摄像头模组的场曲特征曲线图；
图21为本申请实施例的示例四提供的摄像头模组的畸变特征曲线图；
图22为本申请实施例的示例五提供的摄像头模组的轴向色差特征曲线图；
图23为本申请实施例的示例五提供的摄像头模组的场曲特征曲线图；
图24为本申请实施例的示例五提供的摄像头模组的畸变特征曲线图；
图25为本申请实施例的示例六提供的摄像头模组的轴向色差特征曲线图；
图26为本申请实施例的示例六提供的摄像头模组的场曲特征曲线图；
图27为本申请实施例的示例六提供的摄像头模组的畸变特征曲线图。
附图标记：10-电子设备；100-显示模组；110-透光盖板；120-显示屏；200-外壳；210-后盖；211-透光口；220-边框；230-中板；300-电路板；400-摄像头模组；410-光学镜头；411-第一透镜；412-第二透镜；413-第三透镜；414-第四透镜；415-第五透镜；416-棱镜；417-光阑417；420-成像组件；421-滤光片；422-图像传感器；423-反射棱镜；500-摄像头装饰盖；510-透光窗口。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。
以下，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”等的特征可以明示或者隐含地包括一个或者更多个该特征。
此外，本申请中，“上”、“下”等方位术语是相对于附图中的部件示意置放的方位来定义的，应当理解到，这些方向性术语是相对的概念，它们用于相对于的描述和澄清，其可以根据附图中部件所放置的方位的变化而相应地发生变化。
在本申请中，除非另有明确的规定和限定，术语“连接”应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或成一体；可以是直接相连，也可以通过中间媒介间接相连。
为方便理解，首先对本申请实施例中可能涉及的部分技术术语进行解释。
光轴，为光学系统传导光线的方向，参考中心视场的主光线。即光轴是一条垂直穿过理想透镜中心的光线。与光轴平行的光线射入凸透镜时，理想的凸透镜应使所有的光线会聚在凸透镜后的一点，该点即为焦点。
焦距(focal length)，也称为焦长，是光学系统中衡量光的聚集或者发散的度量方式，指无线远的景物通过透镜在焦平面结成清晰影响时，透镜的光学中心至焦点的距离。其中，光学中心是指透镜上任意方向的光线通过时，光线的传播方向不变的点。对于定焦镜头来说，其光学中心的位置是固定不变的，因此，焦距固定；对于变焦镜头来说，其光学中心的变化带来焦距的变化，因此，焦距可以调节。
光圈，是用来控制光线透过镜头，进入机身内感光面光量的装置，通常设置于镜头内。
光圈F值，是镜头的焦距/镜头通光直径得出的相对值。光圈F值越小，在同一单位时间内的进光量越多。光圈F值越大，景深越小，拍照的背景内容将会虚化，类似长焦距镜头的效果。
光焦度(focal power)，等于像方(像侧)光束会聚度与物方(物侧)光束会聚度之差，它表征光学系统偏折光线的能力。在近似认为空气的折射率为1时，一般光焦度表示为像方焦距的倒数。
光焦度表征光学系统对入射平行光束的屈折本领。光焦度的数值越大，平行光束屈折越厉害。当光焦度大于0时，屈折是会聚性的；当光焦度小于0时，屈折是发散性的；当光焦度等于0时，即为平面折射，此时，沿轴平行光束经折射后仍是沿轴平行光线，不出现屈折现象。
光学总长(total track length，TTL)，指从镜筒头部指成像面的总长度，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，代表材料色散程度大小。
视场角(field of view，FOV)，在光学仪器中，以光学仪器的镜头为顶点，以被测目标的物象可通过镜头的最大范围的两条边缘构成的夹角，称为视场角。视场角的大小决定了光学仪器的视野范围，视场角越大，视野就越大，光学倍率就越小。
物侧、像侧，以镜头为界，被摄物体锁在的一侧为物侧，镜头靠近物侧的表面可以称为物侧面；以镜头为界，被摄物体的图像所在的一侧为像侧，镜头靠近像侧的表面可以称为像侧面。
光阑，指用来限制成像光束大小或成像空间单位的光具组件中光学元件的边缘、框架或特别设置的带孔屏障。
孔径光阑，是限制光轴上点光源成像的仪器，孔径光阑限制了成像光束的大小。孔径光阑的存在直接影响成像质量，包括像的清晰度、亮度和景深等。
入瞳，是物面上所有各点发出的光束的共同入口。
入瞳直径，是限制入射光束的有效孔径。
像差(aberration)，是指实际光学系统中，由非近轴光线追迹所得的结果和近轴
光线追迹所得的结果不一致，与高斯光学(一级近似理论或近轴光线)的理想状况的偏差。
像差主要分为球差、彗差、场曲、像散、畸变、色差以及波像差。
色差，是指改变光的颜色。
畸变(distortion)，也称为失真，光学系统对物体所成的像相对于物体本身而言的失真程度。畸变是由于光阑球差的影响，不同视场的主光线通过光学系统后与高斯像面的交点高度不等于理想像高，两者之差就是畸变。因此畸变只改变轴外物点在理想面上的成像位置，使像的形状产生失真，但不影响像的清晰度。
光学畸变(optical distortion)是指光学理论上计算所得到的变形度。
长焦距镜头又称远摄镜头、望远镜头。在拍摄远处物体的过程当中，需要用上长焦距镜头，它能很好地表现远处景物的细节，拍摄到一些不容易接近的拍摄体。特别是在野生动物拍摄中，合适的长焦距镜头可以给摄影爱好者很多的创作机会。然而，长焦距镜头由于焦距较大，因此需要较大的轴向空间以供系统光路进行调整，由此导致镜头的光学总长过大，镜头外形难以实现小型化，进而无法满足移动电子设备轻薄化的发展趋势。
基于此，本申请实施例提供一种电子设备。具体地，该电子设备可以是便携式电子装置或者其他类型的电子装置。例如，电子设备可以是手机、平板电脑(tablet personal computer)、膝上型电脑(laptop computer)、个人数码助理(personal digital assistant，PDA)、监控器、照相机、个人计算机、笔记本电脑、可穿戴设备等。以下为了方便说明，均是以电子设备为手机为例进行的举例说明。
请参阅图1和图2，图1为本申请实施例提供的电子设备10的结构图，图2为本申请实施例提供的电子设备10的爆炸图。由上述可知，在本实施例中，该电子设备10为手机，且电子设备10可以呈近似矩形板状结构。该电子设备10可以包括显示模组100、外壳200、电路板300以及摄像头模组400。
为方便下文描述，建立XYZ坐标系，定义电子设备10的宽度方向为X轴方向，电子设备10的长度方向为Y轴方向，电子设备10的厚度方向为Z轴方向。可以理解的是，电子设备10的坐标系可以根据实际需要进行灵活设置，本申请仅给出了一种示例，并不能认为是对本申请构成的特殊限制。图1和图2仅示意性的示出了电子设备10包括的一些部件，这些部件的实际形状、实际大小、实际位置和实际构造不受图1和图2的限制。
上述显示模组100用于显示图像、视频等。显示模组100可以包括透光盖板110和显示屏120(英文名称：panel，也成为显示面板)，透光盖板110与显示屏120层叠设置。该透光盖板110的材质包括但不限于玻璃。例如，透光盖板110可以采用普通的透光盖板110，用于保护显示屏120，以避免显示屏120因外力导致损坏，并且能够起到防尘作用。或者，透光盖板110也可以采用具有触控功能的透光盖板110，以使电子设备10具有触控功能，从而使用户使用更加方便。因此，本申请对于透光盖板110的具体材质不作特殊限定。
此外，上述显示屏120可以采用柔性显示屏120，也可以采用刚性显示屏120。例如，显示屏120可以为有机发光二极管(organic light-emitting diode，OLED)显示屏120，有源矩阵有机发光二极体或主动矩阵有机发光二极体(active-matrix organic light-emitting diode，AMOLED)显示屏120，迷你发光二极管(mini light-emitting diode)显示屏120，微型发光二极管(micro light-emitting diode)显示屏120，微型有机发光二极管(micro organic light-emitting diode)显示屏120，量子点发光二极管(quantum dot light emitting diode，QLED)显示屏120，液晶显示屏120(liquid crystal display，LCD)。
上述外壳200用于保护电子设备10内部的电子器件。外壳200可以包括后盖210和边框220，后盖210位于显示屏120远离透光盖板110的一侧，并与透光盖板110、显示屏120层叠设置，边框220位于透光盖板110与后盖210之间。边框220固定于后盖210上，示例性地，边框220可以通过粘接、螺纹连接、焊接、卡接等方式固定于后盖210上；或者，边框220也可以与后盖210为一体成型结构，即边框220与后盖210形成一个结构件整体。透光盖板110可以通过胶粘固定于边框220上，以使透光盖板110、后盖210以及边框220围成电子设备10内部的容纳腔，上述电路板300以及电子器件均设置于该容纳腔内。
在一些实施例中，上述外壳200还可以包括中板230，中板230设置于上述容纳腔内，且中板230位于显示屏120远离透光盖板110的一侧。该中板230与边框220固定连接，形成电子设备10的中框，示例性地，中板230与边框220之间可以通过胶粘、螺纹连接、焊接、卡接等方式固定连接；或者，中板230与边框220也可以为一体成型结构，即中板230与边框220形成一个结构件整体。中板230将上述容纳腔分隔为两个相互独立的空间，其中一个空间位于透光盖板110与中板230之间，显示屏120位于该空间内。另一个空间位于中板230与后盖210之间，上述电路板300位于该空间内。
上述电路板300用于设置电子设备10内部的电子器件，并实现电子器件之间的电连接。其中，电路板300可以通过胶粘、螺纹连接、焊接、卡接等方式固定于中板230上。因此，本申请对于电路板300的固定方式不作特殊限定。
并且，电子器件用于实现电子设备10的各种功能。例如，电子器件可以为上述摄像头模组400、控制芯片(例如系统级芯片，System on Chip，SOC)、图形控制芯片(graphics processing unit，GPU)、通用存储器(universal flash storage，UFS)、闪光灯模组以及电容、电阻、电感等。
上述摄像头模组400用于实现视频或者图片的拍摄。摄像头模组400可以包括主摄像头、广角摄像头以及长焦摄像头等，且摄像头模组400的结构形式可以包括直立式和潜望式。该摄像头模组400可以通过柔性连接件(例如，FPC板，flexible printed circuit，柔性电路板300)与上述电路板300电连接。
摄像头模组400具有入光面，该入光面可以以为摄像头模组400内部镜头的入光面。摄像头模组400的入光面朝向上述后盖210，后盖210上开设有透光口211，摄像头模组400设置于透光口211处，且摄像头模组400的入光面朝向该透光口211。在一些示例中，电子设备10还可以包括摄像头装饰盖500，摄像头装饰盖500固定于透光口211处，摄像头装饰盖500上具有透光窗口510，摄像头模组400的入光面与该透光窗口510相对，以使得外界的光线能够穿过透光窗口510进入摄像头模组400，从而实现电子设备10拍摄视频或者图片。
可以理解的是，上述摄像头模组400可以如图1和图2所示设置于后盖210靠近一侧边沿的位置处。在另一些示例中，摄像头模组400也可以设置于后盖210上的其他位置，例如，后盖210上侧的中部区域。因此，本申请对于摄像头模组400与后盖210的相对位置不作特殊限定。
其中，请参阅图3，图3为本申请实施例提供的一种摄像头模组400的结构图。该摄像头模组400可以包括光学镜头410和成像组件420。光学镜头410可以包括多个透镜，成像组件420可以包括滤光片421和图像传感器422，图像传感器422朝向滤光片421的表面即为成像面。
例如，摄像头模组400可以为长焦摄像头，即其光学镜头410为长焦距镜头，该镜头的焦距大于标准镜头的焦距。因此，该摄像头模组400能够对远处物体或者景物进行拍摄，使得电子设备10的拍摄场景更加广泛，有利于提升用户体验。
但是，由前述对长焦距镜头的描述可知，长焦距镜头的焦距较大，需要的轴向空间较大，导致长焦距镜头的光学总长较大。因此，将长焦距镜头应用于电子设备10时，会占用较大的空间，不利于电子设备10的轻薄化。例如，对于直下式的摄像头模组400，使用长焦距镜头时，则会导致摄像头模组400沿电子设备10厚度方向(即Z轴方向)的尺寸较大，即不利于减小电子设备10的厚度尺寸。
为解决上述问题，请参阅图4，图4为本申请实施例提供的一种光学镜头410的结构图，该光学镜头410可以应用于上述摄像头模组400或者电子设备10中。该光学镜头410包括由物侧至像侧依次设置的第一透镜411、第二透镜412、第三透镜413、第四透镜414以及第五透镜415，第一透镜411的物侧为凸面，第一透镜411的像侧为凹面；第一透镜411具有正光焦度、第二透镜412具有负光焦度，第五透镜415具有正光焦度。
其中，透镜的凸面用于将光线发散并反射至凹面，透镜的凹面用于将光线会聚并反射至相邻的透镜，从而经过多个透镜将光线会聚在成像面上。即透镜的凸面具有发散光线的能力，透镜的凹面具有会聚光线的能力。
这样一来，由于第一透镜411的物侧面为凸面，第一透镜411的像侧面为凹面，即入射光线经过第一透镜411的物侧面先发散，然后经过第一透镜411的像侧面后会聚，从而使反射至第二透镜412的光线呈会聚状，以便于光线经过后续透镜并会聚在成像面上。
在一些实施例中，上述第二透镜412和第五透镜415的物侧面也可以均为凸面，第二透镜412和第五透镜415的像侧面均为凹面。以使经过第二透镜412和第五透镜415的光线均为先发散后会聚，从而使得由第五透镜415出射的光线能够会聚在成像面上，有利于更进一步减小透镜组的长度尺寸。
在另一些实施例中，上述第三透镜413和第四透镜414的物侧面和像侧面可以是凹面，也可以是凸面。可以具有正光焦度，也可以具有负光焦度。因此，本申请实施例对于第三透镜413和第四透镜414的具体结构不作特殊限定。
此外，请参阅图5和图6，图5为本申请实施例提供的另一种光学镜头410的结构图，图6为本申请实施例提供的另一种电子设备10(包括图5提供的光学镜头410)的结构图。该光学镜头410还可以包括棱镜416，棱镜416设置于第五透镜415远离第一透镜411的一侧，即棱镜416设置于第五透镜415的像侧。在该结构下，能够使得光学镜头410适应不同电子设备10对摄像头模组400的结构要求。
示例性地，在上述棱镜416为反射型的情况下，通过该棱镜416可以改变第五透镜415射出的光线的传播方向，以使得该棱镜416的入射光线与出射光线的传播方向不同，例如，棱镜416的入射光线与上述多个透镜的光轴方向相同，棱镜416的出射光线沿平行于XY平面的方向传播。从而在保证该光学镜头410具有较长的光学总长的同时，还能有利于减小该光学镜头410的长度尺寸，即有利于减小电子设备10的厚度尺寸。
或者，请参阅图7和图8，图7为本申请实施例提供的又一种光学镜头410的结构图，图8为本申请实施例提供的又一种电子设备10(包括图7提供的光学镜头)的结构图。上述棱镜416也可以为透射型，即该棱镜416应用于潜望式的摄像头模组400中，即图3所示的摄像头模组400还包括反射棱镜423，光学镜头410设置于上述反射棱镜423的出光侧，在该棱镜416的作用下，有利于进一步增加光学总长，从而有利于增加摄像头模组400的拍摄距离。同时，该潜望式的摄像头模组400还有利于减小电子设备10的厚度尺寸，更有利于电子设备10的薄型化。
在另一些实施例中，上述光学镜头410的透镜可以采用玻璃材质，其具有高透过率、较低的散射和吸收率，以及化学稳定性较好等优点。例如，可以采用硅酸盐、硼硅酸盐、草酸盐、氟化物等物质。或者，光学镜头410的透镜也可以采用塑料材料。其具有成本低、加工难度低、重量轻等优点。例如，可以采用PMMA材料(Polymethyl Methacrylate，聚甲基丙烯酸甲酯)、PC材料(Polycarbonate，聚碳酸酯)等。
此外，上述光学镜头410包括的第一透镜411、第二透镜412、第三透镜413、第四透镜414以及第五透镜415可以采用相同的材料制成，也可以采用不同的材料制成。例如，第一透镜411和第二透镜412采用玻璃材质，第三透镜413、第四透镜414以及第五透镜415采用塑料材质。因此，本申请对于光学镜头410的透镜材质以及结构分布不作特殊限定。
在此基础上，上述由多个透镜构成的透镜组(包括第一透镜411、第二透镜412、第三透镜413、第四透镜414以及第五透镜415)结构，除了能够满足光学镜头410焦距、球差、像散、场曲等性能和成像质量的要求外，还具有足够多的参数变量进行光学镜头410的布局和结构的优化，以实现在相同成像质量的前提下，进一步缩短光学镜头410的光学总长。
其中，请参阅图9，图9为本申请实施例提供的光学镜头410的各项参数尺寸示意图。图中左侧为物侧，右侧为像侧，且虚线表示光轴。沿光学镜头410的光轴方向，第一透镜411的物侧面与第五透镜415的像侧面之间的最大距离为TD，第一透镜411的物侧面与光学镜头410的成像面之间的最大距离为TTL(即上述光学总长)，镜头的光圈值为FNO，该光学镜头410满足条件：TD/TTL＜0.35，FNO＜2.6。
例如，TD/TTL的数值可以为0.1、0.12、0.15、0.18、0.2、0.22、0.24、0.26、0.28、0.3、0.31、0.32、0.33、0.34等。
并且，FNO的数值可以为2.59、2.55、2.53、2.51、2.5、、2.49、2.48、2.46、2.44、2.42、2.4、2.38、2.35、2.3、2.2、2.1、2.0、1.8、1.5等。
这样一来，第一透镜411至第五透镜415的尺寸满足上述条件，有利于减小透镜组的整体长度，从而有利于减小光学镜头410在电子设备10内占用的空间。还有利于增大成像系统的入瞳直径，以提升在暗光环境下的成像质量。
在一些实施例中，沿光学镜头410的光轴方向，第五透镜415的像侧面与镜头的成像面之间的距离BFL，光学镜头410乐意满足：TD/BFL＜0.48。这样一来，有利于增加光学镜头410的成像系统的后焦长度，使得第四透镜414之后的光路具有更多可能的形态，从而更加有利于减小成像系统的整体高度。例如，TD/BFL的数值可以为0.47、0.46、0.45、0.43、0.41、0.40、0.38、0.36、0.34、0.32、0.3、0.28、0.25、0.2、0.1等。
此外，在上述光学镜头410中，光学镜头410的焦距为f，第一透镜411的焦距为f1，第二透镜412的焦距为f2，第三透镜413的焦距为f3，第四透镜414的焦距为f4，第五透镜415的焦距为f5。
在一些实施例中，光学镜头410可以满足：1.0＜TTL/f＜1.2。例如，TTL/f的数值可以为1.05、1.06、1.08、1.1、1.11、1.12、1.13、1.14、1.15、1.16、1.17、1.18、1.19等。这样一来，能够更加合理的设置光学镜头410的长度尺寸，使成像系统的尺寸与成像质量得到更好的平衡。也即是，在减小光学镜头410尺寸的同时，还能够保证成像质量。
上述光学镜头410还满足：0＜f1/f5＜0.5。例如，f1/f5的数值可以为0.01、0.01、0.05、0.1、0.11、0.15、0.2、0.25、0.27、0.3、0.35、0.4、0.41、0.42、0.43、0.45、0.47、0.48等。这样一来，能够更加合理的分配第一透镜411和第五透镜415的光焦度，以使光纤在第一透镜411和第五透镜415处合理偏折，有利于降低成像系统的像差以及敏感度。
此外，上述光学镜头410还可以满足：-5＜f/f2+f/f3＜-0.4。例如，f/f2+f/f3的数值可以为-4.5、-4.3、-4.17、-4.11、-4、-3.5、-3、-2、-1.5、-1.09、-0.92、-0.7、-0.54、-0.5、-0.41等。这样一来，能够更加合理的分配第二透镜412和第三透镜413的光焦度，使得光线走势平滑，从而更有利于降低成像系统的像差。
在另一些实施例中，沿光学镜头410的光轴方向，第一透镜411的中心厚度为CT1，第二透镜412的中心厚度为CT2，第三透镜413的中心厚度为CT3，第四透镜414的中心厚度为CT4，第五透镜415的中心厚度为CT5。第一透镜411与第二透镜412之间的距离为T12，第二透镜412与第三透镜413之间的距离为T23，第三透镜413与第四透镜414之间的距离为T34，第四透镜414与第五透镜415之间的距离为T45。
上述光学镜头410可以满足：0.7＜CT1/(CT2+CT3+CT4+CT5)＜1.7。例如，CT1/(CT2+CT3+CT4+CT5)的数值可以为0.72、0.8、0.82、0.9、1、1.1、1.15、1.2、1.34、1.4、1.5、1.53、1.6等。这样一来，能够有利于控制各个透镜的厚度尺寸，从而缩小透镜组的体积，以减小光学镜头410的长度尺寸。
此外，该光学镜头410还可以满足：0.15＜(T12+T23+T34+T45)/TD＜0.3。例如，(T12+T23+T34+T45)/TD的数值可以为0.16、0.17、0.18、0.19、0.2、0.21、0.22、0.23、0.24、0.25、0.26、0.27、0.28、0.29等。这样一来，在压缩透镜组的体积的同时，还能够保证相邻透镜之间具有合理的装配空间。
可以理解的是，上述透镜的中心厚度以及相邻两个透镜之间的距离，均以透镜上光轴穿过的点为基准，即光轴穿过透镜的距离为透镜的中心厚度，相邻两个透镜之间的光轴长度即为相邻两个透镜之间的距离。
在上述基础上，第二透镜412的物侧面的曲率半径为R21，第二透镜412的像侧面的曲率半径为R22，光学镜头410可以满足条件：0.15＜R21/R22*CT2＜0.4。例如，R21/R22*CT2的数值可以为0.16、0.17、0.18、0.19、0.2、0.23、0.25、0.26、0.28、0.3、0.31、0.35、0.38等。这样一来，通过有效控制第二透镜412的形状，使经过第一透镜411的光线良好的过渡至后续透镜，有利于矫正第一透镜411引入的像差，从而提升成像质量。
此外，第三透镜413的物侧面的曲率半径为R31，该光学镜头410还可以满足条件：-0.1＜R22/R31*T23＜0.1。例如，R22/R31*T23的数值可以为-0.09、-0.08、-0.07--0.06、-0.05、-0.01、0、0.0005、0.01、0.02、0.03、0.04、0.05、0.06、0.07、0.08、0.09、0.091等。这样一来，通过控制第二透镜412和第三透镜413相邻表面的形状，从而有利于第二透镜412出射的光线顺利进入第三透镜413，以矫正部分像差，提升成像质量。
基于此，以下对应用上述光学镜头410(光学镜头410均满足上述条件)的摄像头模组400进行举例说明。
示例一
在示例一中，提供一种摄像头模组400，该摄像头模组400包括上述光学镜头410，光学镜头410的各项参数(包括上述条件式的数值)如表1所示。
表1
上述光学镜头410的各个透镜的相关参数如表2所示。
表2
上述光学镜头410的各个透镜的屈折力正负分布，以及物侧面和像侧面的凹凸分布情况如表3所示。
表3
上述光学镜头410的各个透镜的非球面系数如表4所示。
表4
基于此，请参阅图10、图11以及图12，图10为本申请实施例的示例一提供的摄像头模组400的轴向色差特征曲线图，图11为本申请实施例的示例一提供的摄像头模组400的场曲特征曲线图，图12为本申请实施例的示例一提供的摄像头模组400的畸变特征曲线图。
由于摄像头模组400的轴向色差、场曲以及畸变曲线偏离零点的纵坐标轴越小越好，因此，由图10、图11以及图12可以看出，本示例提供的摄像头模组400的轴向色差、场曲以及畸变较小，具有较好的光学性能，从而能够保证摄像头模组400具有良好的成像质量。
示例二
在示例二中，提供一种摄像头模组400，该摄像头模组400包括上述光学镜头410，光学镜头410的各项参数(包括上述条件式的数值)如表5所示。
表5
上述光学镜头410的各个透镜的相关参数如表6所示。
表6
上述光学镜头410的各个透镜的屈折力正负分布，以及物侧面和像侧面的凹凸分布情况如表7所示。
表7
上述光学镜头410的各个透镜的非球面系数如表8所示。
表8
基于此，请参阅图13、图14以及图15，图13为本申请实施例的示例二提供的摄像头模组400的轴向色差特征曲线图，图14为本申请实施例的示例二提供的摄像头模组400的场曲特征曲线图，图15为本申请实施例的示例二提供的摄像头模组400的畸变特征曲线图。
由于摄像头模组400的轴向色差、场曲以及畸变偏离零点的纵坐标轴越小越好，因此，由图13、图14以及图15可以看出，本示例提供的摄像头模组400的轴向色差、场曲以及畸变较小，具有较好的光学性能，从而能够保证摄像头模组400具有良好的成像质量。
示例三
在示例三中，提供一种摄像头模组400，该摄像头模组400包括上述光学镜头410，光学镜头410的各项参数(包括上述条件式的数值)如表9所示。
表9
上述光学镜头410的各个透镜的相关参数如表10所示。
表10

上述光学镜头410的各个透镜的屈折力正负分布，以及物侧面和像侧面的凹凸分布情况如表11所示。
表11
上述光学镜头410的各个透镜的非球面系数如表12所示。
表12
基于此，请参阅图16、图17以及图18，图16为本申请实施例的示例三提供的摄像头模组400的轴向色差特征曲线图，图17为本申请实施例的示例三提供的摄像头模组400的场曲特征曲线图，图18为本申请实施例的示例三提供的摄像头模组400的畸变特征曲线图。
由于摄像头模组400的轴向色差、场曲以及畸变偏离零点的纵坐标轴越小越好，因此，由图16、图17以及图18可以看出，本示例提供的摄像头模组400的轴向色差、场曲以及畸变较小，具有较好的光学性能，从而能够保证摄像头模组400具有良好的成像质量。
示例四
在示例四中，提供一种摄像头模组400，该摄像头模组400包括上述光学镜头410，光学镜头410的各项参数(包括上述条件式的数值)如表13所示。
表13
上述光学镜头410的各个透镜的相关参数如表14所示。
表14

上述光学镜头410的各个透镜的屈折力正负分布，以及物侧面和像侧面的凹凸分布情况如表15所示。
表15
上述光学镜头410的各个透镜的非球面系数如表16所示。
表16
基于此，请参阅图19、图20以及图21，图19为本申请实施例的示例四提供的摄像头模组400的轴向色差特征曲线图，图20为本申请实施例的示例四提供的摄像头模组400的场曲特征曲线图，图21为本申请实施例的示例四提供的摄像头模组400的畸变特征曲线图。
由于摄像头模组400的轴向色差、场曲以及畸变偏离零点的纵坐标轴越小越好，因此，由图19、图20以及图21可以看出，本示例提供的摄像头模组400的轴向色差、场曲以及畸变较小，具有较好的光学性能，从而能够保证摄像头模组400具有良好的成像质量。
示例五
在示例五中，提供一种摄像头模组400，该摄像头模组400包括上述光学镜头410，光学镜头410的各项参数(包括上述条件式的数值)如表17所示。
表17
上述光学镜头410的各个透镜的相关参数如表18所示。
表18

上述光学镜头410的各个透镜的屈折力正负分布，以及物侧面和像侧面的凹凸分布情况如表19所示。
表19
上述光学镜头410的各个透镜的非球面系数如表20所示。
表20
基于此，请参阅图22、图23以及图24，图22为本申请实施例的示例五提供的摄像头模组400的轴向色差特征曲线图，图23为本申请实施例的示例五提供的摄像头模组400的场曲特征曲线图，图24为本申请实施例的示例五提供的摄像头模组400的畸变特征曲线图。
由于摄像头模组400的轴向色差、场曲以及畸变偏离零点的纵坐标轴越小越好，因此，由图22、图23以及图24可以看出，本示例提供的摄像头模组400的轴向色差、场曲以及畸变较小，具有较好的光学性能，从而能够保证摄像头模组400具有良好的成像质量。
示例六
在示例六中，提供一种摄像头模组400，该摄像头模组400包括上述光学镜头410，光学镜头410的各项参数(包括上述条件式的数值)如表21所示。
表21
上述光学镜头410的各个透镜的相关参数如表22所示。
表22
上述光学镜头410的各个透镜的屈折力正负分布和凹凸分布情况如表23所示。
表23
上述光学镜头410的各个透镜的非球面系数如表24所示。
表24
基于此，请参阅图25、图26以及图27，图25为本申请实施例的示例六提供的摄像头模组400的轴向色差特征曲线图，图26为本申请实施例的示例六提供的摄像头模组400的场曲特征曲线图，图27为本申请实施例的示例六提供的摄像头模组400的畸变特征曲线图。
由于摄像头模组400的轴向色差、场曲以及畸变偏离零点的纵坐标轴越小越好，因此，由图25、图26以及图27可以看出，本示例提供的摄像头模组400的轴向色差、场曲以及畸变较小，具有较好的光学性能，从而能够保证摄像头模组400具有良好的成像质量。
在本说明书的描述中，具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述，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所述权利要求的保护范围为准。

Claims (16)

  1. 一种光学镜头，其特征在于，包括由物侧至像侧依次设置的第一透镜、第二透镜、第三透镜、第四透镜以及第五透镜，所述第一透镜的物侧面为凸面，所述第一透镜的像侧面为凹面；所述第一透镜具有正光焦度，所述第二透镜具有负光焦度，所述第五透镜具有正光焦度；
    沿所述光学镜头的光轴方向，所述第一透镜的物侧面与所述第五透镜的像侧面之间的最大距离为TD，所述第一透镜的物侧面与所述光学镜头的成像面之间的最大距离为TTL，所述光学镜头的光圈值为FNO，所述光学镜头满足条件：TD/TTL＜0.35，FNO＜2.6。
  2. 根据权利要求1所述的光学镜头，其特征在于，所述第二透镜和所述第五透镜的物侧面均为凸面，所述第二透镜和所述第五透镜的像侧面均为凹面。
  3. 根据权利要求1或2所述的光学镜头，其特征在于，沿所述光学镜头的光轴方向，所述第五透镜的像侧面与所述光学镜头的成像面之间的距离BFL，所述光学镜头满足条件：TD/BFL＜0.48。
  4. 根据权利要求1～3任一项所述的光学镜头，其特征在于，所述光学镜头的焦距为f，所述光学镜头满足条件：1.0＜TTL/f＜1.2。
  5. 根据权利要求1～4任一项所述的光学镜头，其特征在于，所述第一透镜的焦距为f1，所述第五透镜的焦距为f5，所述光学镜头满足条件：0＜f1/f5＜0.5。
  6. 根据权利要求1～5任一项所述的光学镜头，其特征在于，所述第二透镜的焦距为f2，所述第三透镜的焦距为f3，所述光学镜头满足条件：-5＜f/f2+f/f3＜-0.4。
  7. 根据权利要求1～6任一项所述的光学镜头，其特征在于，沿所述光学镜头的光轴方向，所述第一透镜的中心厚度为CT1，所述第二透镜的中心厚度为CT2，所述第三透镜的中心厚度为CT3，所述第四透镜的中心厚度为CT4，所述第五透镜的中心厚度为CT5，所述光学镜头满足条件：0.7＜CT1/(CT2+CT3+CT4+CT5)＜1.7。
  8. 根据权利要求1～7任一项所述的光学镜头，其特征在于，沿所述光学镜头的光轴方向，所述第一透镜与所述第二透镜之间的距离为T12，所述第二透镜与所述第三透镜之间的距离为T23,所述第三透镜与所述第四透镜之间的距离为T34，所述第四透镜与所述第五透镜之间的距离为T45，所述光学镜头满足条件：0.15＜(T12+T23+T34+T45)/TD＜0.3。
  9. 根据权利要求1～8任一项所述的光学镜头，其特征在于，所述第二透镜的物侧面的曲率半径为R21，所述第二透镜的像侧面的曲率半径为R22；沿所述光学镜头的光轴方向，所述第二透镜的中心厚度为CT2，所述光学镜头满足条件：0.15＜R21/R22*CT2＜0.4。
  10. 根据权利要求1～9任一项所述的光学镜头，其特征在于，所述第二透镜的像侧面的曲率半径为R22，所述第三透镜的物侧面的曲率半径为R31；沿所述光学镜头的光轴方向，所述第二透镜与所述第三透镜之间的距离为T23，所述光学镜头满足条件：-0.1＜R22/R31*T23＜0.1。
  11. 根据权利要求1～10任一项所述的光学镜头，其特征在于，所述光学镜头还包括棱镜，所述棱镜设置于所述第五透镜远离所述第一透镜的一侧。
  12. 根据权利要求11所述的光学镜头，其特征在于，所述棱镜为反射型或透射型。
  13. 根据权利要求1～11任一项所述的光学镜头，其特征在于，所述光学镜头还包括光阑，所述光阑设置于所述第一透镜远离所述第五透镜的一侧。
  14. 一种摄像头模组，其特征在于，包括：
    光学镜头，为权利要求1～13任一项所述的光学镜头；
    成像组件，设置于所述光学镜头的出光侧。
  15. 根据权利要求14所述的摄像头模组，其特征在于，所述摄像头模组还包括反射棱镜，所述反射棱镜设置于所述光学镜头的入光侧。
  16. 一种电子设备，其特征在于，包括：
    外壳，所述外壳上开设有透光口；
    摄像头模组，为权利要求14或15所述的摄像头模组，所述摄像头模组设置于所述外壳内，且所述摄像头模组的入光面朝向所述透光口。
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