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US-12625415-B2 - Terminal device, camera and photographing apparatus

US12625415B2US 12625415 B2US12625415 B2US 12625415B2US-12625415-B2

Abstract

A terminal device, a camera, and a photographing apparatus are provided. The terminal device includes a first board and a first camera; the first board includes a light-transmitting area; the first camera includes a prism, a lens group, and a photosensitive element, the prism includes an object side and an image side, light transmitting through the light-transmitting area sequentially pass through the object side of the prism, the image side of the prism, and the lens group to irradiate onto the photosensitive element, a field of view of the light that the photosensitive element can receive is within a preset value range, and an optical axis of the lens group is not parallel to a vertical line of the light-transmitting area; and the preset value range is greater than or equal to 55°.

Inventors

  • Zhidong Yin
  • Jie Meng
  • Xinhui Duan

Assignees

  • BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

Dates

Publication Date
20260512
Application Date
20230921
Priority Date
20230531

Claims (18)

  1. 1 . A terminal device, comprising: a first board and a first camera; wherein the first board comprises a light-transmitting area; wherein the first camera comprises a prism, a lens group, and a photosensitive sensor, the prism comprises an object side and an image side, light transmitting through the light-transmitting area sequentially pass through the object side of the prism, the image side of the prism, and the lens group to irradiate onto the photosensitive sensor, a field of view of the light that the photosensitive sensor receives is within a preset value range, and an optical axis of the lens group is not parallel to a vertical line of the light-transmitting area; and wherein the preset value range is greater than or equal to 55°, wherein a refractive index nl of the prism satisfies n1≥1.7, and wherein a first equivalent side length is equal to a second equivalent side length of the prism, which are both Y 1 , and the first equivalent side length Y 1 satisfies 0.74Y≤Y 1 ≤0.88Y; wherein: the first equivalent side length is a length of a projection of the object side of the prism on a straight line where the optical axis of the lens group is located, and the second equivalent side length is a length of the projection of the image side of the prism on the vertical line of the light-transmitting area; and Y = ( Q · H 2 ⁢ F + T 2 ⁢ Q ) · 1 1 - 2 ⁢ X 1 - X 2 , wherein, X = 1 n ⁢ 1 · 1 1 + 4 ⁢ Q 2 , Q indicates an optical factor of the first camera, F indicates an aperture factor of the first camera, H indicates a body diagonal length of the photosensitive sensor, and T indicates a distance between the object side of the first lens and the image side of the prism.
  2. 2 . The terminal device according to claim 1 , wherein the vertical line of the light-transmitting area is perpendicular to the first board, and the optical axis of the lens group is perpendicular to the vertical line of the light-transmitting area.
  3. 3 . The terminal device according to claim 1 , wherein an optical factor Q of the first camera satisfies 0.5≤Q≤0.9, wherein the optical factor Q is a ratio of a combined focal length f of the lens group to a body diagonal length H of the photosensitive sensor.
  4. 4 . The terminal device according to claim 1 , wherein the first camera further comprises a diaphragm, and an aperture factor F of the first camera satisfies 1.0<F<1.95, wherein the aperture factor F is a ratio of a combined focal length f of the lens group to a clear aperture D of the diaphragm.
  5. 5 . The terminal device according to claim 4 , wherein the diaphragm is located in a light exit direction of the image side of the prism, and is located between the prism and a first lens, and the first lens is a lens closest to the prism in the lens group.
  6. 6 . The terminal device according to claim 5 , wherein there is a first distance T 1 between the diaphragm and the first lens, and T 1 >0.
  7. 7 . The terminal device according to claim 5 , wherein a ratio of a first length L 1 of the first camera to the combined focal length f of the lens group satisfies (L 1 /f)≥1.05, and wherein the first length L 1 of the first camera is a distance from the diaphragm to the photosensitive sensor.
  8. 8 . The terminal device according to claim 5 , wherein the first lens comprises an object side protruded toward the image side of the prism; and the diaphragm is sleeved at an outer ring of the object side of the first lens.
  9. 9 . The terminal device according to claim 8 , wherein a ratio of a first length L 1 of the first camera to the combined focal length f of the lens group satisfies (L 1 /f)≥1.05, and wherein the first length L 1 of the first camera is a distance from the object side of the first lens to the photosensitive sensor.
  10. 10 . The terminal device according to claim 8 , wherein a distance T between the object side of the first lens and the image side of the prism satisfies 0.02 mm≤T≤1 mm.
  11. 11 . A camera, comprising: a prism, a lens group and a photosensitive sensor; wherein the prism comprises an object side and an image side; wherein light transmitting through the prism sequentially pass through the object side of the prism, the image side of the prism, and the lens group to irradiate onto the photosensitive sensor, a field of view of the light that the photosensitive sensor receives is within a preset value range, and an optical axis of the lens group is not parallel to an optical axis of the object side of the prism; and wherein the preset value range is greater than or equal to 55°, wherein a refractive index nl of the prism satisfies n≥1.7, and wherein a first equivalent side length is equal to a second equivalent side length of the prism, which are both Y 1 , and the first equivalent side length Y 1 satisfies 0.74Y≤Y 1 ≤0.88Y; wherein: the first equivalent side length is a length of a projection of the object side of the prism on a straight line where the optical axis of the lens group is located, and the second equivalent side length is a length of the projection of the image side of the prism on the vertical line of the light-transmitting area; and Y = ( Q · H 2 ⁢ F + T 2 ⁢ Q ) · 1 1 - 2 ⁢ X 1 - X 2 , wherein, X = 1 n ⁢ 1 · 1 1 + 4 ⁢ Q 2 , Q indicates an optical factor of the first camera, F indicates an aperture factor of the first camera, H indicates a body diagonal length of the photosensitive sensor, and T indicates a distance between the object side of the first lens and the image side of the prism.
  12. 12 . The camera according to claim 11 , wherein each optical axis of the lens group is perpendicular to the optical axis of the object side of the prism.
  13. 13 . The camera according to claim 11 , wherein an optical factor Q of the camera satisfies 0.5≤Q≤0.9, wherein the optical factor Q is a ratio of a combined focal length f of the lens group to a body diagonal length H of the photosensitive sensor.
  14. 14 . The camera according to claim 11 , wherein the camera further comprises a diaphragm, and an aperture factor F of the camera satisfies 1.0<F<1.95, wherein the aperture factor F is a ratio of a combined focal length f of the lens group to a clear aperture D of the diaphragm.
  15. 15 . The camera according to claim 14 , wherein the diaphragm is located in a light exit direction of the image side of the prism, and is located between the prism and a first lens, and the first lens is a lens closest to the prism in the lens group.
  16. 16 . The camera according to claim 15 , wherein there is a first distance T 1 between the diaphragm and the first lens, and T 1 >0.
  17. 17 . The camera according to claim 15 , wherein a ratio of a first length L 1 of the camera to the combined focal length f of the lens group satisfies (L 1 /f)≥1.05, and wherein the first length L 1 of the camera is a distance from the diaphragm to the photosensitive sensor.
  18. 18 . A photographing apparatus, comprising: a camera, wherein the camera comprises a prism, a lens group and a photosensitive sensor; wherein the prism comprises an object side and an image side; wherein light transmitting through the prism sequentially pass through the object side of the prism, the image side of the prism, and the lens group to irradiate onto the photosensitive sensor, a field of view of light that the photosensitive sensor receives is within a preset value range, and an optical axis of the lens group is not parallel to an optical axis of the object side of the prism; and wherein the preset value range is greater than or equal to 55°, wherein a refractive index nl of the prism satisfies n1≥1.7, and wherein a first equivalent side length is equal to a second equivalent side length of the prism, which are both Y 1 , and the first equivalent side length Y 1 satisfies 0.74Y≤Y 1 ≤0.88Y; wherein: the first equivalent side length is a length of a projection of the object side of the prism on a straight line where the optical axis of the lens group is located, and the second equivalent side length is a length of the projection of the image side of the prism on the vertical line of the light-transmitting area; and Y = ( Q · H 2 ⁢ F + T 2 ⁢ Q ) · 1 1 - 2 ⁢ X 1 - X 2 , wherein, X = 1 n ⁢ 1 · 1 1 + 4 ⁢ Q 2 , Q indicates an optical factor of the first camera, F indicates an aperture factor of the first camera, H indicates a body diagonal length of the photosensitive sensor, and T indicates a distance between the object side of the first lens and the image side of the prism.

Description

CROSS REFERENCE The present disclosure is filed based upon and claims priority to Chinese Application No. 202310640224.8 filed on May 31, 2023, the contents of which are incorporated herein by reference in their entireties for all purposes. TECHNICAL FIELD The present disclosure relates to the technical field of optical imaging, and in particular to a terminal device, a camera and a photographing apparatus. BACKGROUND Nowadays, portable terminal devices have gradually tended to be miniaturized. At the same time, each brand chooses to upgrade the photographing performance of the terminal device to enhance the competitiveness of the product. At present, in order to ensure better photographing performance of the terminal device, it is usually necessary to configure a large number of lenses in the camera of the terminal device, and multiple optical elements are stacked in the thickness direction of the terminal, resulting in a relatively large size of the terminal in the thickness direction, which is not conducive to the miniaturization of photographing apparatus. SUMMARY Embodiments of the present disclosure provide a terminal device, a camera, and a photographing apparatus. The technical solution is as follows: In a first aspect, the present disclosure provides a terminal device, where the terminal device includes a first board and a first camera; the first board includes a light-transmitting area;the first camera includes a prism, a lens group, and a photosensitive element, the prism includes an object side and an image side, light transmitting through the light-transmitting area sequentially pass through the object side of the prism, the image side of the prism, and the lens group to irradiate onto the photosensitive element, a field of view of the light that the photosensitive element receives is within a preset value range, and an optical axis of the lens group is not parallel to a vertical line of the light-transmitting area; andthe preset value range is greater than or equal to 55°. In a second aspect, the present disclosure provides a camera, where the camera includes a prism, a lens group and a photosensitive element; the prism includes an object side and an image side;light transmitting through the prism sequentially pass through the object side of the prism, the image side of the prism, and the lens group to irradiate onto the photosensitive element, a field of view of the light that the photosensitive element receives is within a preset value range, and an optical axis of the lens group is not parallel to an optical axis of the object side of the prism; andthe preset value range is greater than or equal to 55°. In a third aspect, the embodiment of the present disclosure provides a photographing apparatus including the camera according to the second aspect and the implementations thereof. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort. FIG. 1 is a schematic structural diagram of a terminal device illustrated in an embodiment of the present disclosure; FIG. 2 is a schematic structural diagram of a camera illustrated in an embodiment of the present disclosure; FIG. 3 is a schematic structural diagram of a terminal device illustrated in an embodiment of the present disclosure; FIG. 4 is a schematic structural diagram of a camera illustrated in an embodiment of the present disclosure; FIG. 5 is a graph showing an aberration characteristic of a camera illustrated in an embodiment of the present disclosure; FIG. 6 is a schematic structural diagram of a camera illustrated in an embodiment of the present disclosure; FIG. 7 is a graph showing an aberration characteristic of a camera illustrated in an embodiment of the present disclosure; FIG. 8 is a schematic structural diagram of a camera illustrated in an embodiment of the present disclosure; FIG. 9 is a graph showing an aberration characteristic of a camera illustrated in an embodiment of the present disclosure; FIG. 10A is a schematic structural diagram of a camera illustrated in an embodiment of the present disclosure; FIG. 10B is a schematic structural diagram of a camera illustrated in an embodiment of the present disclosure; FIG. 11 is a schematic structural diagram of a camera illustrated in an embodiment of the present disclosure; and FIG. 12 is a schematic structural diagram of a camera illustrated in an embodiment of the present disclosure. DETAILED DESCR