WO2018192579A1 - Module d'appareil photographique - Google Patents

Module d'appareil photographique Download PDF

Info

Publication number
WO2018192579A1
WO2018192579A1 PCT/CN2018/083981 CN2018083981W WO2018192579A1 WO 2018192579 A1 WO2018192579 A1 WO 2018192579A1 CN 2018083981 W CN2018083981 W CN 2018083981W WO 2018192579 A1 WO2018192579 A1 WO 2018192579A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
spherical
camera module
image sensor
disposed
Prior art date
Application number
PCT/CN2018/083981
Other languages
English (en)
Chinese (zh)
Inventor
郑志羿
袁亮
罗朝兵
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.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2018192579A1 publication Critical patent/WO2018192579A1/fr

Links

Images

Classifications

    • 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
    • H04N23/50—Constructional details
    • H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils

Definitions

  • the present disclosure relates to the field of electronic technologies, and in particular, to a camera module.
  • the camera module includes a spherical lens 101 , an image sensor 102 , and a casing 103 .
  • the surface of the object facing the camera module is a object surface.
  • the point inside is called an object point
  • the spherical lens 101 is used to refract the light signal reflected by each object point in the object surface onto the surface 1021 of the image sensor on which the photosensitive device is disposed, and the surface 1021 on which the photosensitive device is disposed is based on the received light signal.
  • the light signals of different directions reflected by the object point are condensed by the spherical lens 101, and then converge at a point, which is called the focus corresponding to the object point.
  • the process of dropping the focus on the surface 1021 on which the photosensitive device is disposed is referred to as focusing, and it is possible to ensure that the image formed by the object point is clear after focusing.
  • the object point A corresponds to the focus A1, and when the focus A1 falls on the surface 1021 on which the photosensitive device is disposed by focusing, the image formed by the object point A is clear.
  • the image plane composed of the focus A1, the focus B1, and the focus C1 is a curved surface.
  • the image formed by C is distorted, and the resulting image is sharply centered and surrounded by distortion. Similarly, when focusing on object point B, the resulting image will be sharp and center-distorted. That is, regardless of which object point of the object is focused, there is always an aberration between the generated image and the object image, resulting in poor imaging of the camera module.
  • the embodiment of the present disclosure provides a camera module, which can solve the problem of poor imaging performance of the camera module in the related art, and the camera module includes: a spherical lens and a spherical image sensor;
  • the spherical lens includes a first mirror surface and a second mirror surface, the first mirror surface is a convex spherical surface, and a convex direction of the first mirror surface is away from the second mirror surface, and the second mirror surface is a plane or a convex surface a spherical surface, in a case where the second mirror surface is a convex spherical surface, a convex direction of the second mirror surface is away from the first mirror surface;
  • a surface of the spherical image sensor in which the photosensitive device is disposed is a concave spherical surface, and an opening of the concave spherical surface faces the second mirror surface, and an optical axis of the spherical lens and a central axis of the surface on which the photosensitive device is disposed are in the same Straight line
  • the convex spherical surface refers to a spherical surface whose outer surface is a reflecting surface
  • the concave spherical surface refers to a spherical surface whose inner surface is a reflecting surface
  • the first mirror surface is for receiving an optical signal reflected by each object point on the object surface of the object to be photographed, and the second mirror surface is for refracting the light signal to the surface on which the photosensitive device is disposed,
  • the object surface refers to a surface of the object facing the first mirror surface, and a point in the object plane is an object point;
  • the surface of the photosensitive device is configured to generate an image surface corresponding to the object surface according to the light signal, and the image surface is formed on the surface on which the photosensitive device is disposed, and the image surface is also A concave spherical surface, and the curvature of the image surface is equal to the curvature of the surface on which the photosensitive device is disposed.
  • the curvature of the surface of the image sensor in which the image sensor is disposed is equal to the curvature of the image plane corresponding to the object surface, the focus corresponding to each object point can be dropped regardless of which object point of the object surface is focused.
  • the image generated by each object point is ensured to be clear, the aberration is corrected, and the imaging effect of the camera module is improved.
  • the spherical image sensor further includes an upper side surface, a lower side surface, and a back spherical surface opposite to the surface on which the photosensitive device is disposed;
  • the upper side surface and the lower side surface are respectively parallel to a central axis of the surface on which the photosensitive member is disposed, and a curvature of the back spherical surface is equal to a curvature of a surface on which the photosensitive device is disposed.
  • the camera module further includes: a telephoto lens group, the telephoto lens group is located between the spherical lens and the spherical image sensor, and the telephoto lens group respectively Separating from the spherical lens and the spherical image sensor, the telephoto lens group includes at least one lens, and an optical axis of each of the at least one lens is in line with an optical axis of the spherical lens;
  • the adder lens group is used to increase the focal length of the camera module.
  • the focal length of the camera module can be increased, and the image distortion caused when the spherical lens captures the object surface can be corrected.
  • the adder lens group includes a plurality of lenses, and a curvature of a mirror surface of each of the plurality of lenses toward the spherical lens is different from each of the other lenses toward the spherical lens. The curvature of the mirror.
  • the camera module further includes a first lens barrel, the first lens barrel has a first through hole, and the spherical lens and the distance increasing lens group are located at the first a through hole, the spherical image sensor being located outside the first barrel, and an optical axis of the spherical lens, a central axis of the surface on which the photosensitive device is disposed, and each lens in the pair of lens units
  • the optical axis and the central axis of the first through hole are all on the same straight line;
  • the inner diameter of the first through hole is less than or equal to 5 mm, and an inner diameter of the first through hole is larger than a larger value of a height value of the spherical lens and a height value of the distance increasing lens group, the spherical surface
  • the height direction of the lens and the height direction of the camera module are both perpendicular to the linear direction in which the optical axis of the spherical lens is located.
  • the first equivalent focal length of the camera module is greater than or equal to 20% of a radius of curvature of the surface on which the photosensitive device is disposed, and the first equivalent focal length refers to The distance between the focal point of the virtual lens and the center of the virtual lens when the spherical lens and the adder lens group are equivalent to one virtual lens, and the first equivalent focal length is according to the spherical lens a focal length, a focal length of the increasing lens group, and a distance between the spherical lens and the increasing lens group are determined based on a preset simulation algorithm;
  • the first equivalent focal length of the camera module may be greater than 20% of the radius of curvature of the spherical image sensor, thereby satisfying the requirement of the user to shoot a distant object surface.
  • a ratio between the first equivalent focal length and a first optical path length of the camera module is greater than or equal to 1.5, the first optical path length being between the surface on which the photosensitive device is disposed and the first mirror surface The maximum distance.
  • the first optical path length of the camera module is small, which can meet the requirement of a smaller thickness of the camera module.
  • the mechanical back focus of the camera module is greater than or equal to 0.65 mm, and the mechanical back focus is the lens closest to the spherical image sensor in the increasing lens group toward the The maximum distance between the surface of the spherical image sensor and the surface on which the photosensitive device is disposed.
  • the mechanical back focus of the camera module is greater than 0.65 mm, and the remaining space available for design is large, and the flexibility is high.
  • the camera module further includes a fixing block and a circuit board, the fixing block includes a first fixing surface and a second fixing surface, and the circuit board includes a first circuit board surface;
  • the spherical image sensor further includes a back spherical surface opposite to the surface on which the photosensitive device is disposed, and the back spherical surface is attached to the first fixed surface;
  • the second fixing surface is attached to the surface of the first circuit board.
  • the circuit board further includes a second circuit board surface opposite to the first circuit board surface, the thickness of the camera module refers to the second circuit board surface and the a distance between end faces of the first end of the first barrel, the first end being an end of the first barrel opposite the spherical image sensor, the thickness being less than or equal to 6.5 mm.
  • the camera module further includes a filter
  • the filter is disposed between the spherical lens and the spherical image sensor, the spherical lens is isolated from the filter, and the filter is isolated from the spherical image sensor;
  • the filter is perpendicular to a line of the optical axis of the spherical lens, the projection of the spherical lens in the first plane and the projection of the spherical image sensor in the first plane both fall on the filter a range of projections of the light sheet in the first plane, the first plane being a plane perpendicular to a line of the optical axis of the spherical lens;
  • the filter is configured to transmit an optical signal having a wavelength within a specified range, the specified range including a first specified range and a second specified range, the first specified range being greater than or equal to 400 nanometers and less than or equal to 700 nanometers
  • the second specified range is a range greater than or equal to 800 nanometers and less than or equal to 900 nanometers.
  • the camera module can ensure iris recognition and expand the function of the camera module.
  • the camera module further includes a spacer between the spherical lens and the spherical image sensor, the spherical lens is isolated from the spacer, and The spacer is isolated from the spherical image sensor, the spacer being perpendicular to a line along which the optical axis of the spherical lens is located;
  • the spacer includes an inner hole, and the amount of light refracted to the surface on which the photosensitive device is disposed can be adjusted by adjusting the size of the inner hole, and the projection of the spacer in the second plane falls on the spherical lens
  • the second plane refers to a plane perpendicular to the line in which the optical axis is located.
  • the camera module further includes an IR light emitting diode (IR led);
  • IR led IR light emitting diode
  • the IR LED is configured to emit a specified optical signal, and the wavelength of the specified optical signal is in the second specified range. After the specified optical signal is reflected by the iris of the human eye, the obtained optical signal passes through the spherical lens. Refractive to the filter, and filtered by the filter, and transmitted to the surface on which the photosensitive device is disposed, the surface of the photosensitive device being configured to generate the iris based on the received light signal image.
  • the camera module further includes a wide-angle lens, a planar image sensor, and a second lens barrel, wherein the second lens barrel has a second through hole, and the wide-angle lens is located in the a two-pass hole, the planar image sensor is located outside the second lens barrel, and an optical axis of the wide-angle lens, a central axis of the planar image sensor, and a central axis of the second through hole are all on the same line on.
  • the wide-angle lens includes a first wide-angle lens mirror and a second wide-angle lens mirror.
  • the first wide-angle lens mirror surface is a convex spherical surface, and a convex direction of the first wide-angle lens mirror faces away from the second wide-angle lens mirror surface
  • the second wide-angle lens mirror surface is a plane or a convex spherical surface, in the second
  • the convex direction of the second wide-angle lens mirror faces away from the first wide-angle lens mirror.
  • the first wide-angle lens mirror is for receiving an optical signal reflected by each object point in the object surface
  • the second wide-angle lens mirror is for refracting the optical signal to a surface of the planar image sensor configured with the photosensitive device
  • the planar image sensor is configured with a surface of the photosensitive device for generating an image of the object plane based on the received light signal.
  • FIG. 1 is a schematic structural diagram of a camera module provided by a related art
  • FIG. 2 is a schematic diagram of focusing by using a camera module provided by the related art
  • FIG. 3 is a schematic diagram of focusing by using a camera module provided by the related art
  • FIG. 4 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of focusing by using a camera module provided by an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of focusing by using a camera module provided by an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic diagram of performing iris recognition by using a camera module provided by an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • the camera module includes a spherical lens 201 and a spherical image sensor 202 .
  • the spherical lens 201 includes a first mirror surface 2011 and a second mirror surface 2012.
  • the first mirror surface 2011 is a convex spherical surface, and the convex direction of the first mirror surface 2011 is away from the second mirror surface 2012.
  • the second mirror surface 2012 is a plane or The convex spherical surface (FIG. 4 is only a plane), and in the case where the second mirror surface 2012 is a convex spherical surface, the protruding direction of the second mirror surface 2012 is away from the first mirror surface 2011.
  • the convex spherical surface refers to a spherical surface whose outer surface is a reflecting surface
  • the spherical surface refers to a curved surface having an equal curvature radius.
  • the spherical lens 201 may be a positive focal length lens, and the positive focal length lens may form a real image when the object surface is photographed, the real image and the object surface are on both sides of the positive focal length lens, or the spherical lens 201 may be a negative focal length lens.
  • the negative focal length lens can form a virtual image when the object surface is photographed, and the virtual image and the object plane are on the same side of the negative focal length lens.
  • the surface 2021 of the spherical image sensor 202 in which the photosensitive device is disposed is a concave spherical surface, and the opening of the concave spherical surface faces the second mirror surface 2012, the optical axis of the spherical lens 201 and the surface on which the photosensitive device is disposed.
  • the central axes of the 2021 are on the same line.
  • the surface of the object facing the first mirror surface 2011 is the object surface, and the point in the object surface is the object point.
  • the first mirror surface 2011 is configured to receive an optical signal reflected by each object point on the object surface of the object to be photographed, and the second mirror surface 2012 is configured to refract the light signal to the surface 2021 on which the photosensitive device is disposed.
  • the surface 2021 of the photosensitive device is configured to generate an image surface corresponding to the object surface based on the light signal.
  • the image plane is an image obtained by capturing the object by using the camera module; or the image plane is an image obtained by capturing the object surface of the object by using the camera module, and the image plane is formed in the configuration.
  • the image plane is also a concave spherical surface, and the curvature of the image plane is equal to the curvature of the surface on which the photosensitive member is disposed.
  • the object to be photographed refers to a target photographed by the camera module, and may be a human, a plant or an animal.
  • the photosensitive device may be a charge coupled device (CCD) or a metal oxide semiconductor device (Complementary Metal-Oxide). Semiconductor, CMOS), etc.
  • the curvature of the image plane is equal to the curvature of the surface 2021 on which the photosensitive device is disposed, the image plane is formed on the surface on which the photosensitive device is disposed, and the image is generated according to the image plane, and the first mirror surface 2011 can be corrected.
  • the aberration caused by the shooting since the curvature of the image plane is equal to the curvature of the surface 2021 on which the photosensitive device is disposed, the image plane is formed on the surface on which the photosensitive device is disposed, and the image is generated according to the image plane, and the first mirror surface 2011 can be corrected. The aberration caused by the shooting.
  • the object point A corresponds to the focus point A3
  • the object point B corresponds to the focus point B3.
  • the object point C corresponds to the focus C3, and the image plane composed of the focus A3, the focus B3, and the focus C3 is equal to the curvature of the surface 2021 on which the photosensitive member is disposed.
  • the focus A3 falls on the surface 2021 on which the photosensitive device is disposed
  • the focus B3 and the focus C3 also fall on the surface 2021 on which the photosensitive device is disposed
  • the focus B3 and the focus C3 also fall on the surface 2021 on which the photosensitive device is disposed, that is, which object point is focused on the object surface.
  • a reference object surface may be disposed at a specified position from the spherical lens 201, and the reference object surface may be simulated by the spherical lens 201 to obtain a reference image surface corresponding to the reference object surface.
  • the reference image plane is a surface composed of respective focal points corresponding to respective object points in the reference object plane, and the curvature of the reference image plane is determined, and the curvature of the surface 2021 on which the photosensitive device is disposed is set as the curvature of the reference image plane, thereby determining
  • the arrangement is configured to have the shape of the surface 2021 of the photosensitive device.
  • the designated position may be a position that is opposite to the transmission direction of the optical signal and the distance from the spherical lens 201 is a preset distance, and the preset distance may be determined according to the setting requirement.
  • the curvature of the reference image plane can be determined by a preset simulation algorithm, which can implement the function of the analog photographing, and can acquire the curvature of the image plane corresponding to the object surface for the determined object plane. Then, when performing the simulation, the surface shape of the spherical lens 201, the refractive index of each point on the first mirror surface 2011 and the second mirror surface 2012, and the minimum thickness and the maximum thickness of the spherical lens 201 can be obtained, and the reference object surface is obtained. The distance between the specified position and the spherical lens 201 is input, and the parameter and the distance are input to a preset simulation algorithm capable of outputting the curvature of the reference image plane.
  • the minimum distance between the object surface and the first mirror surface 2011 is far greater than the maximum between the spherical lens 201 and the surface 2021 where the photosensitive device is disposed, regardless of the position of the object surface.
  • the distance can be considered to be located at the infinity of the spherical lens 201, and the size of the object surface is also much larger than the size of the spherical lens 201 and the size of the surface 2021 on which the photosensitive device is disposed, so that it can be considered that for the camera module
  • the difference between the position and size of the object surface is negligible.
  • the surface 2021 of the photosensitive device will be disposed.
  • the curvature is set equal to the curvature of the reference image plane, so that the curvature of the surface 2021 of the photosensitive device is not much different from the curvature of the image surface corresponding to any object surface, and any object surface can be photographed. Correct aberrations to ensure clear images.
  • the curvature of the surface of the photosensitive device is equal to the curvature of the image surface corresponding to the object surface
  • the image point corresponding to each object point of the object surface is corresponding to each object point.
  • the focus can be placed on the surface of the photosensor, ensuring that the images generated by each object point are clear, correcting the aberration, and improving the imaging effect of the camera module.
  • the lens for correcting the aberration is not required, and the loss to the optical signal can be reduced, and the transmission to the surface 2021 where the photosensitive device is disposed is increased. The amount of light passing through ensures a clearer image.
  • the spherical image sensor 202 further includes an upper surface 2022, a lower surface 2023, and a photosensitive surface.
  • the surface 2021 of the device is opposite the back spherical surface 2024.
  • the upper side surface 2022 and the lower side surface 2023 are respectively parallel to a central axis of the surface 2021 on which the photosensitive member is disposed, and the curvature of the back spherical surface 2024 is equal to the curvature of the surface 2021 on which the photosensitive member is disposed.
  • FIG. 7 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • the camera module further includes: a telephoto lens group 203, where the telephoto lens group 203 is located.
  • the spherical lens 201 and the spherical image sensor 202 are separated from the spherical lens 201 and the spherical image sensor 202, respectively.
  • the adder lens group 203 includes at least one lens (only one lens is taken as an example), and an optical axis of each of the at least one lens is in line with an optical axis of the spherical lens 201, and the distance lens is
  • the group 203 is for increasing the focal length of the camera module, and is also capable of correcting image distortion caused when the spherical lens 201 is photographed on the object surface.
  • the focal length of the camera module is determined according to the focal length of the spherical lens 201, the focal length of the increasing lens group 203, and the maximum distance between the spherical lens 201 and the increasing lens group 203, it is determined by a preset simulation algorithm.
  • the ideal focal length of the camera module can be determined according to the requirements of the camera module, and the focal length of the spherical lens 201 can be determined.
  • the distance increasing lens is calculated according to a preset simulation algorithm.
  • the theoretical maximum distance between the group 203 and the spherical lens 201 and the theoretical focal length of the increasing lens group 203, and the increasing distance lens group 203 matching the theoretical maximum distance and the theoretical focal length are set, thereby ensuring that the focal length of the camera module is an ideal focal length.
  • the adder lens group 203 may include a plurality of lenses, and the curvature of each of the plurality of lenses toward the mirror surface of the spherical lens 201 is different from the curvature of each of the lenses toward the mirror surface of the spherical lens 201.
  • the lens may include a first increasing lens surface and a second increasing lens surface, and the first increasing lens surface 2031 is closer to the second mirror 2012, and the second increasing The surface 2021 on which the photosensitive device is disposed is closer to the lens mirror 2032.
  • the first increasing lens surface of any lens may be a plane or a curved surface; in the case where the first increasing lens surface is a curved surface, the first increasing lens surface may be convex or concave; further, in the first increasing lens In the case where the mirror surface is convex, the first increasing lens surface may be a spherical surface.
  • the second increasing lens surface of any lens may also be a plane or a curved surface.
  • the second increasing lens surface may be convex or concave; further, in the In the case where the mirror of the second increasing lens is convex, the mirror of the second increasing lens may be a spherical surface.
  • any of the lenses may be either a positive focal length lens or a negative focal length lens.
  • the plurality of lenses in the adder lens group can be of different types.
  • the curvature of the reference image plane formed by the two is different for the camera mode including the adder lens group 203.
  • the reference object plane is simulated by both the spherical lens 201 and the adder lens group 203 to obtain a reference image plane, and the curvature of the surface 2021 on which the photosensitive device is disposed is set as the curvature of the reference image plane. Then, referring to Fig. 8, when focusing is performed, it is also ensured that the image plane is formed on the surface 2021 on which the photosensitive member is disposed.
  • a surface shape of the spherical lens 201, a refractive index of each point on the first mirror surface 2011 and the second mirror surface 2012, and a minimum thickness and a maximum thickness of the spherical lens 201 may be acquired; and each lens in the lens group 203 is increased.
  • the preset simulation algorithm is capable of outputting the curvature of the reference image plane.
  • the camera module may further include a first lens barrel 204 having a first through hole therein, the spherical lens 201 and the distance increasing lens group 203 being located.
  • the first through hole, the spherical image sensor is located outside the first lens barrel 204, and an optical axis of the spherical lens 201, a central axis of the surface 2021 where the photosensitive device is disposed, and each of the distance increasing lens groups 203
  • the optical axis of the lens and the central axis of the first through hole are all on the same straight line.
  • the inner diameter of the first through hole is less than or equal to 5 mm, and the inner diameter of the first through hole is larger than a larger value of the height value of the spherical lens 201 and the height value of the distance increasing lens group 203, and the height of the spherical lens 201
  • the direction and the height direction of the camera module are both perpendicular to the linear direction of the optical axis of the spherical lens 201.
  • the first lens barrel 204 is configured to protect the spherical lens 201 and the distance increasing lens group 203, and prevent the spherical lens 201 and the distance increasing lens group 203 from being subjected to dust.
  • the light signal reflected by the object surface is along the first lens barrel.
  • the first through hole of the 204 can be transmitted to the spherical lens 201, and the optical signal refracted by the adder lens group 203 can be transmitted to the spherical image sensor 202.
  • the spherical lens 201 and the widening lens group 203 can be equivalent to one virtual lens, and the distance between the focus of the virtual lens and the center of the virtual lens is defined as the first equivalent.
  • the first equivalent focal length may be determined according to a focal length of the spherical lens 201, a focal length of the increasing lens group 203, a distance between the spherical lens 201 and the increasing lens group 203, based on a preset simulation algorithm, the first The equivalent focal length may be greater than or equal to 20% of the radius of curvature of the surface 2021 on which the photosensitive device is disposed, thereby satisfying the user's need to photograph a distant object surface.
  • the second point to be explained is that the smaller the optical path length of the camera module, the smaller the thickness.
  • the maximum distance between the surface 2021 configured with the photosensitive device and the first mirror surface 2011 may be defined as a first optical path length, and the ratio between the first equivalent focal length and the first optical path length Greater than or equal to 1.5, because the first optical path length is small, it can meet the requirement of smaller thickness of the camera module.
  • the third point that needs to be explained is that the larger the mechanical back focus of the camera module, the larger the remaining space available for design, and the higher the flexibility.
  • the mechanical back focus is the increased distance.
  • the lens closest to the spherical image sensor 202 in the lens group 203 faces the maximum distance between the surface of the spherical image sensor 202 and the surface 2021 on which the photosensitive member is disposed.
  • the mechanical back focus is greater than 0.65 mm and the flexibility is high.
  • the first equivalent focal length of the camera module provided in this embodiment may be 7.76 mm, and the first optical path length may be 4.15 mm.
  • FIG. 10 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • the camera module further includes a fixed block 205 and a circuit board 206.
  • the fixing block 205 is used to fix the spherical image sensor 202, and the spherical image sensor 202 includes a back spherical surface 2024 opposite to the surface 2021 on which the photosensitive device is disposed.
  • the fixed block includes a first fixing surface 2051 and a second fixing surface 2052.
  • the curvature of a fixed surface 2051 is equal to the curvature of the back spherical surface 2024, and the back spherical surface 2024 is attached to the first fixing surface 2051.
  • the bonding manner may be glue bonding or bonding of other materials.
  • the circuit board 206 includes a first circuit board surface 2061 and a second circuit board surface 2062.
  • the second fixing surface 2052 is attached to the first circuit board surface 2061.
  • the bonding manner can also be glue bonding or other materials. Bonding.
  • the distance between the end surface of the first end 2041 of the first lens barrel 204 and the surface 2062 of the second circuit board may be defined as the thickness of the camera module, and the first end refers to the first end.
  • One end of the lens barrel 204 is away from the end of the spherical image sensor 202, and the thickness is less than or equal to 6.5 mm.
  • FIG. 11 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • the camera module further includes a filter 207 on the basis of the foregoing embodiment.
  • the filter 207 is disposed between the spherical lens 201 and the spherical image sensor 202, and the spherical lens 201 is isolated from the filter 207, and the filter 207 is isolated from the spherical image sensor 202.
  • the filter 207 is perpendicular to a line of the optical axis of the spherical lens 201.
  • the filter 207 is capable of transmitting a wavelength within a specified range. That is, when an optical signal having a wavelength within the specified range is transmitted to the filter 207, it can be transmitted from the filter 207, and when an optical signal whose wavelength is not within the specified range is transmitted to the filter 207, It cannot be transmitted from the filter 207.
  • the specified range includes a first specified range and a second specified range, the first specified range being greater than or equal to 400 nanometers and less than or equal to 700 nanometers, being a wavelength range of visible light signals, the second specified range being greater than or equal to The range of 800 nm and less than or equal to 900 nm is the wavelength range of the infrared light signal.
  • the visible light signal when the visible light signal is reflected by the object surface, the visible light signal can be transmitted from the filter 207 and transmitted to the surface 2021 on which the photosensitive device is disposed, and the surface 2021 on which the photosensitive device is disposed can generate the object surface under the irradiation of the visible light signal.
  • the object surface reflects the infrared light signal
  • the infrared light signal can be transmitted from the filter 207 and transmitted to the surface 2021 on which the photosensitive device is disposed, and the surface 2021 on which the photosensitive device is disposed can generate the object surface in the infrared light. The image under the signal.
  • the object surface reflects other optical signals than the visible light signal and the infrared light signal
  • the other light signals cannot be transmitted from the filter 207, and cannot be transmitted to the surface 2021 on which the photosensitive device is disposed, thereby avoiding other light.
  • the signal interferes with the surface 2021 of the photosensor.
  • FIG. 12 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure.
  • the camera module further includes a spacer 208 between the spherical lens 201 and the spherical image sensor 202, the spherical lens 201 and the pad.
  • the sheet 208 is isolated and the spacer 208 is isolated from the spherical image sensor 202, which is perpendicular to the line of the optical axis of the spherical lens 201.
  • the spacer 208 includes an inner hole, and the amount of light refracted to the surface 2021 of the photosensitive device can be adjusted by adjusting the size of the inner hole, and the projection of the spacer 208 in the second plane falls on the spherical lens 201.
  • the second plane refers to a plane perpendicular to the line in which the optical axis is located.
  • the radius of the inner hole can be adjusted according to the requirement of the degree of brightness of the generated image, and the aperture of the camera module can be controlled, that is, the amount of light transmitted to the surface 2021 on which the photosensitive device is disposed can be controlled. For example, when a brighter image is to be generated, the radius of the inner hole can be increased, the aperture of the camera module can be increased, and the amount of light transmitted to the surface 2021 on which the photosensitive device is disposed can be increased. Similarly, when a darker image is to be generated, the radius of the inner hole can be reduced, the aperture of the camera module can be reduced, and the amount of light refracted onto the surface 2021 on which the photosensitive device is disposed can be reduced.
  • the camera module further includes an IR led 209, and the camera module can perform iris recognition by setting an IR led 209.
  • the IR led 209 is configured to transmit a designated optical signal, and the wavelength of the designated optical signal is in the second specified range, which is an infrared optical signal.
  • the specified light signal is irradiated to the iris of the human eye and reflected by the iris of the human eye, the obtained optical signal passes through the spherical lens 201, is refracted to the filter 207, filtered by the filter 207, and transmitted to the iris 207.
  • the surface 2021 of the photosensitive device is configured to generate an image of the iris based on the received light signal.
  • the spherical image sensor 202 can be 1/3 inch in size, the number of pixels can be 12 million, the first equivalent focal length can be 15 mm, and the first optical path length can be 5 mm.
  • the iris recognition of the camera module The distance is 80 cm, and the iris recognition distance is used to specify the maximum distance between the iris and the spherical lens 201 when the image of the iris is generated. Then, as long as the distance between the iris and the spherical lens 201 is less than 80 cm, the surface 2021 of the photosensitive device is disposed to generate an image of the iris.
  • the size of the spherical image sensor 202 means that the spherical image sensor 202 is flattened along the curved direction of the surface 2021 on which the photosensitive device is disposed, so that the surface 2021 on which the photosensitive device is disposed becomes a plane, the plane is diagonal length.
  • the present disclosure further provides a camera system including the camera module shown in FIG. 4 and an IR led 209 disposed outside the camera module, the IR led 209 and the camera module. Isolated.
  • the camera module further includes a wide-angle lens 211, a planar image sensor 212, and a second lens barrel 213 having a second through hole therein, the wide-angle lens 211 is located at the second through hole, the planar image sensor 212 is located outside the second lens barrel 213, and the wide-angle lens 211
  • the optical axis, the central axis of the planar image sensor 212, and the central axis of the second through hole are all on the same straight line.
  • the wide-angle lens 211 includes a first wide-angle lens mirror 2111 and a second wide-angle lens mirror 2112.
  • the first wide-angle lens surface 2111 is a convex spherical surface, and the convex direction of the first wide-angle lens surface 2111 is away from the second wide-angle lens surface 2112.
  • the second wide-angle lens surface 2112 is a plane or a convex spherical surface. In the case where the wide-angle lens mirror 2112 is a convex spherical surface, the convex direction of the second wide-angle lens mirror 2112 is away from the first wide-angle lens mirror 2111.
  • the first wide-angle lens mirror 2111 is configured to receive an optical signal reflected by each object point in the object plane
  • the second wide-angle lens mirror 2112 is configured to refract the optical signal to the surface 2121 of the planar image sensor 212 configured with the photosensitive device, the configuration A surface 2121 having a photosensitive device is used to generate an image of the object plane based on the received light signal.
  • the planar image sensor 212 and the spherical image sensor 202 can be fixed on the circuit board 206, and the electrical connection is realized through the circuit board 206.
  • the number of pixels of the spherical image sensor 202 and the planar image sensor 212 may each be 12 million.
  • the size of the spherical image sensor 202 and the size of the planar image sensor 212 may both be 1/2.86 inches, although other sizes may be used, and the size of the spherical image sensor 202 may be slightly smaller than the size of the planar image sensor 212.
  • the size of 212 refers to the length of the diagonal of the surface 2121 on which the photosensitive device is disposed.
  • the wide-angle lens 211 and the planar image sensor 212 are also provided.
  • the change of the structure causes the camera module provided in this embodiment to be different from the camera module of the embodiment shown in FIG.
  • the first optical path length of the camera module is 5 mm
  • the first equivalent focal length is 15 mm
  • the second optical path length is 4.15 mm
  • the second equivalent focal length is 3.86 mm.
  • the second optical path length is long.
  • the second equivalent focal length is the focal length of the wide-angle lens 211, and the second equivalent focal length is smaller than the first equivalent focal length.
  • the wide-angle lens 211 and the spherical lens 201 are combined to jointly capture a target object, and the angle of view of the image can be increased with respect to the single object captured by the spherical lens 201.
  • the smaller the focal length of the lens the larger the angle of view of the photographing and the smaller the farthest distance that can be photographed.
  • the larger the focal length of the lens the smaller the angle of view of the shot and the greater the distance that can be captured.
  • the first equivalent focal length of the camera module is large, and the farthest distance a that can be captured is large and the angle of view x is small.
  • the second equivalent focal length of the wide-angle lens 211 is small, and the farthest distance b that can be photographed is small and the angle of view y is large.
  • the target object having a large distance and a small viewing angle can be imaged by the spherical lens 201 to generate a first image
  • the target object having a small distance and a large angle of view can be imaged by the wide-angle lens 211 to generate a second image, which will be first.
  • the image and the second image are combined into a third image, and the third image includes both a target having a large viewing angle and a target having a large distance.
  • the size of the captured image can be adjusted.
  • the camera module can adjust the size of the captured image by optical zoom, which refers to the manner in which the size of the image is adjusted by changing the focal length.
  • the camera module can adjust the first equivalent focal length of the spherical lens 201 by adjusting the distance between the spherical lens 201 and the spherical image sensor 202, and can adjust the wide-angle lens by adjusting the distance between the wide-angle lens 211 and the planar image sensor 212.
  • the second equivalent focal length of 211 By adjusting the first equivalent focal length and the second equivalent focal length, optical zoom can be achieved to adjust the size of the image. During optical zooming, the resolution of the image is always the same.
  • the multiple of the optical zoom is a magnification when the size of the image is adjusted by changing the focal length, and the multiple of the optical zoom is equal to the ratio between the first equivalent focal length and the second equivalent focal length of the camera module.
  • the multiples of the optical zoom of the camera module provided in this embodiment may be greater than 1 time and less than or equal to 3.88 times. Then, the image may be enlarged by 3.88 times under the premise of ensuring that the resolution of the image remains unchanged.
  • the camera module can adjust the size of the captured image by using a digital zoom, where the image size is adjusted by an image processing algorithm, and the camera module can store the image.
  • the processing algorithm processes the generated image through an image processing algorithm to realize digital zoom, thereby adjusting the size of the image.
  • the resolution of the image changes. The larger the multiple of the digital zoom, the lower the resolution of the image.
  • the multiple of the digital zoom is a magnification when the size of the image is adjusted by an image processing algorithm.
  • the multiple of the digital zoom of the camera module provided in this embodiment may be greater than 1 time and less than or equal to 14.9 times, that is, the image may be enlarged by up to 14.9 times without requiring resolution.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Lenses (AREA)

Abstract

La présente invention relève du domaine technique de l'électronique. L'invention concerne un module d'appareil photographique. Le module d'appareil photographique comprend : une lentille sphérique et un capteur d'image sphérique. La lentille sphérique comprend une première surface de lentille et une seconde surface de lentille. La première surface de lentille est une surface sphérique convexe. La surface d'un composant photosensible disposé dans le capteur d'image sphérique est une surface sphérique concave. Une surface d'imagerie est formée sur la surface pourvue du composant photosensible, la surface d'imagerie est une surface sphérique concave, et la courbure de la surface d'imagerie est égale à la courbure de la surface pourvue du composant photosensible. La présente invention permet une correction d'aberration.
PCT/CN2018/083981 2017-04-21 2018-04-20 Module d'appareil photographique WO2018192579A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710267126.9 2017-04-21
CN201710267126.9A CN106973203B (zh) 2017-04-21 2017-04-21 摄像头模组

Publications (1)

Publication Number Publication Date
WO2018192579A1 true WO2018192579A1 (fr) 2018-10-25

Family

ID=59334001

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/083981 WO2018192579A1 (fr) 2017-04-21 2018-04-20 Module d'appareil photographique

Country Status (2)

Country Link
CN (1) CN106973203B (fr)
WO (1) WO2018192579A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112861738A (zh) * 2021-02-10 2021-05-28 北京极豪科技有限公司 一种光学模组及电子设备

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106973203B (zh) * 2017-04-21 2020-11-17 华为机器有限公司 摄像头模组
CN108769477A (zh) * 2018-06-07 2018-11-06 信利光电股份有限公司 一种摄像模组
CN109151273B (zh) * 2018-08-27 2020-09-04 彭波 一种光扇立体摄像机及立体测量方法
KR102185056B1 (ko) * 2019-01-09 2020-12-01 삼성전기주식회사 카메라 모듈
CN110515258A (zh) * 2019-08-05 2019-11-29 肯维捷斯（武汉）科技有限公司 一种近摄照明器及包含该照明器的成像设备
CN111093031B (zh) * 2019-12-31 2021-06-15 维沃移动通信有限公司 图像生成方法及电子设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009103897A (ja) * 2007-10-23 2009-05-14 Komatsulite Mfg Co Ltd 撮像レンズ
KR100920600B1 (ko) * 2007-11-08 2009-10-08 삼성전기주식회사 초소형 촬상 광학계
CN102998772A (zh) * 2011-09-13 2013-03-27 索尼公司 镜头光学单元和成像器件
CN104270555A (zh) * 2014-09-19 2015-01-07 上海集成电路研发中心有限公司 一种曲面cmos图像传感器摄像模组
CN104580869A (zh) * 2013-10-10 2015-04-29 华为技术有限公司 一种光场相机
CN104730688A (zh) * 2015-04-17 2015-06-24 张家港中贺自动化科技有限公司 一种宽视场高分辨率光学系统
CN105393155A (zh) * 2013-06-21 2016-03-09 微软技术许可有限责任公司 用于弯曲的传感器系统的透镜
CN106973203A (zh) * 2017-04-21 2017-07-21 华为机器有限公司 摄像头模组

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1327261C (zh) * 2005-09-05 2007-07-18 长春理工大学 一种光学非球面检测准万能补偿镜
US9104018B2 (en) * 2012-03-30 2015-08-11 Canon Kabushiki Kaisha Imaging apparatus having a curved image surface
CN106231018A (zh) * 2016-09-20 2016-12-14 深圳市金立通信设备有限公司 一种双摄像头模组及终端、双摄像头模组的装配方法
CN106550181B (zh) * 2016-11-09 2020-01-03 华为机器有限公司 摄像头模组和终端设备

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009103897A (ja) * 2007-10-23 2009-05-14 Komatsulite Mfg Co Ltd 撮像レンズ
KR100920600B1 (ko) * 2007-11-08 2009-10-08 삼성전기주식회사 초소형 촬상 광학계
CN102998772A (zh) * 2011-09-13 2013-03-27 索尼公司 镜头光学单元和成像器件
CN105393155A (zh) * 2013-06-21 2016-03-09 微软技术许可有限责任公司 用于弯曲的传感器系统的透镜
CN104580869A (zh) * 2013-10-10 2015-04-29 华为技术有限公司 一种光场相机
CN104270555A (zh) * 2014-09-19 2015-01-07 上海集成电路研发中心有限公司 一种曲面cmos图像传感器摄像模组
CN104730688A (zh) * 2015-04-17 2015-06-24 张家港中贺自动化科技有限公司 一种宽视场高分辨率光学系统
CN106973203A (zh) * 2017-04-21 2017-07-21 华为机器有限公司 摄像头模组

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112861738A (zh) * 2021-02-10 2021-05-28 北京极豪科技有限公司 一种光学模组及电子设备

Also Published As

Publication number Publication date
CN106973203B (zh) 2020-11-17
CN106973203A (zh) 2017-07-21

Similar Documents

Publication Publication Date Title
WO2018192579A1 (fr) Module d'appareil photographique
CN113721348B (zh) 摄像用光学镜组及电子装置
CN109828345B (zh) 光学取像镜头、取像装置及电子装置
TWI629535B (zh) 影像擷取光學系統、取像裝置及電子裝置
TWI626488B (zh) 影像擷取光學鏡頭、取像裝置及電子裝置
TWI656374B (zh) 光學影像擷取鏡片組、取像裝置及電子裝置
KR101649467B1 (ko) 촬영 렌즈 광학계
TWI477805B (zh) 影像拾取系統鏡片組及取像裝置
CN111443459B (zh) 光学成像镜头及取像装置
TWI443371B (zh) 取像系統鏡頭組
TW201819980A (zh) 取像光學鏡片系統、取像裝置及電子裝置
CN108398771A (zh) 光学取像镜片系统、取像装置及电子装置
TW201928438A (zh) 取像用光學鏡頭、取像裝置及電子裝置
TWI627467B (zh) 成像系統鏡頭組、取像裝置及電子裝置
TW201827878A (zh) 影像擷取光學鏡組、取像裝置及電子裝置
TW201932901A (zh) 光學攝像鏡組、取像裝置及電子裝置
TW201831944A (zh) 影像擷取光學透鏡組、取像裝置及電子裝置
WO2020125383A1 (fr) Lentille et dispositif terminal
TW201821851A (zh) 影像擷取光學鏡片系統、取像裝置及電子裝置
TW201913162A (zh) 影像鏡片系統組、取像裝置及電子裝置
TWI616678B (zh) 影像擷取鏡片系統、取像裝置及電子裝置
US20120147247A1 (en) Optical system and imaging apparatus including the same
KR102378519B1 (ko) 단초점 렌즈 및 이를 포함한 촬영 장치
CN114967044B (zh) 成像透镜组及摄像模组
KR20090089234A (ko) 촬상 렌즈 시스템

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18788448

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18788448

Country of ref document: EP

Kind code of ref document: A1