CN220798319U

CN220798319U - Portable terminal device

Info

Publication number: CN220798319U
Application number: CN202322263160.2U
Authority: CN
Inventors: 张翔云; 陈沭
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-08-22
Filing date: 2023-08-22
Publication date: 2024-04-16
Anticipated expiration: 2033-08-22

Abstract

The present disclosure relates to a portable terminal device, and belongs to the technical field of terminal fittings. The portable terminal device includes a first board body and a first lens; the first plate body is provided with a light-transmitting area; the first lens comprises a first lens and a photosensitive element, and light rays transmitted through the light transmission area are irradiated onto the photosensitive element through the first lens; the shape of the projection of the first lens on the photosensitive element is polygonal. By adopting the method and the device, the space utilization rate inside the portable terminal equipment can be improved.

Description

Portable terminal device

Technical Field

The present disclosure relates to the field of terminal accessories, and in particular, to a portable terminal device.

Background

Today, the photographing function of a portable terminal device (e.g., a mobile phone) has become one of the most important functions, and manufacturers need to rationally design a first lens to reduce the overall size of the mobile phone.

Currently, a first lens of a mobile phone includes a lens group and a photosensitive element. In the lens group, a round lens is often used.

However, the outline of other functional elements in the mobile phone is mostly not arc-shaped, and a circular lens is adopted, so that a gap between the lens and the other functional elements is large, and the space utilization rate inside the mobile phone is low.

Disclosure of Invention

The embodiment of the disclosure provides a portable terminal device, which can solve the technical problems existing in the related art, and the technical scheme is as follows:

the embodiment of the disclosure provides portable terminal equipment, which comprises a first plate body and a first lens;

the first plate body is provided with a light-transmitting area;

the first lens comprises a first lens and a photosensitive element, and light rays transmitted through the light transmission area are irradiated onto the photosensitive element through the first lens;

the shape of the projection of the first lens on the photosensitive element is polygonal.

In one possible implementation, the first lens further includes a prism;

the prism is provided with a first object side surface and a first image side surface, and light rays transmitted through the light transmission area sequentially pass through the first object side surface, the first image side surface and the first lens to irradiate on the photosensitive element.

In one possible implementation, the photosensitive element is perpendicular to the optical axis of the first lens.

In one possible implementation, the shape of the projection of the first lens on the photosensitive element is rectangular.

In one possible implementation manner, the length of the projection in the first direction is a first value L1, the length of the projection in the second direction is a second value L2, the first value L1 is greater than the second value L2, and the first direction and the second direction are orthogonal to each other and are parallel to the photosensitive element.

In one possible implementation, the first lens has a second object side surface and a second image side surface, and the light transmitted through the light-transmitting region sequentially passes through the first object side surface, the first image side surface, the second object side surface, and the second image side surface to be irradiated onto the photosensitive element.

In one possible implementation manner, the focal length of the second object side in the first direction is a third value H1, the focal length of the second object side in the second direction is a fourth value H2, the third value H1 is not equal to the fourth value H2, and the first direction and the second direction are orthogonal to each other and are parallel to the photosensitive element.

In one possible implementation manner, the focal length of the second image side surface in the first direction is a fifth value H3, the focal length of the second image side surface in the second direction is a sixth value H4, and the fifth value H3 is not equal to the sixth value H4.

In one possible implementation, the second object-side surface is concave and the second image-side surface is convex.

In one possible implementation, the perpendicular to the light-transmitting region is perpendicular to the first plate body.

The technical scheme provided by the embodiment of the disclosure at least comprises the following beneficial effects:

the embodiment of the disclosure provides a portable terminal device in which a first lens includes a first lens and a photosensitive element, and light transmitted through the light-transmitting region is irradiated onto the photosensitive element through the first lens. The shape of the projection of the first lens on the photosensitive element is polygonal. That is, the outer contour of the first lens is polygonal. Therefore, the outlines of other functional elements in the mobile phone are mostly square, the first lens with the polygonal outer outline is adopted, the edge of the first lens can be arranged in parallel with the other functional elements, and compared with the circular lens, the gap between the lens and the other functional elements can be reduced, so that the space utilization rate in the mobile phone is improved.

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.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural view of a portable terminal device shown in an embodiment of the present disclosure;

fig. 2 is a schematic structural view of a portable terminal device according to an embodiment of the present disclosure;

fig. 3 is a schematic structural view of a portable terminal device according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a first lens projected onto a photosensitive element according to an embodiment of the present disclosure;

fig. 5 is a schematic structural view of a portable terminal device according to an embodiment of the present disclosure.

Description of the drawings

1. A first plate body;

11. a light-transmitting region;

2. a first lens;

21. a first lens; 22. a photosensitive element; 23. a prism;

211. a second object side; 212. a second image side surface; 231. a first object side surface; 232. a first image side surface; 233. a reflective surface.

Detailed Description

For the purposes of clarity, technical solutions and advantages of the present disclosure, the following further details the embodiments of the present disclosure with reference to the accompanying drawings.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," "third," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.

The embodiment of the disclosure provides a portable terminal device, which can be a smart phone or a tablet computer lamp, and the portable terminal device is taken as the smart phone for example to describe each component.

As shown in fig. 1 and 2 (fig. 1 is a front view of a portable terminal device, and fig. 2 is a left view of the portable terminal device), the portable terminal device includes a first plate body 1 and a first lens 2.

The portable terminal device may include a plurality of lenses, and the first lens 2 may be a tele lens of the plurality of lenses.

The first lens 2 includes a first lens 21 and a photosensitive element 22, and light transmitted through the light-transmitting region 11 is irradiated onto the photosensitive element 22 through the first lens.

The first lens 21 has a second object side 211 and a second image side 212, and a shape of the first lens 21 projected on the photosensitive element 22 is a polygon.

Therefore, the first lens 21 is not a circular lens, its outline is polygonal, and since the outline of other functional elements in the mobile phone is mostly square, the edge of the first lens 21 can be parallel to other functional elements by adopting the first lens 21 with polygonal outline, compared with the circular lens, the gap between the lens and other functional elements can be reduced, and the space utilization rate in the mobile phone can be improved.

In the portable terminal device, the first lens 2 may be a rear camera of the terminal device or may be a front camera of the terminal device.

For example, in the case where the first lens 2 is a rear camera in the terminal device, the first board 1 may be a back plate of the terminal device (i.e., a board structure disposed on a side of the terminal device opposite to the display surface of the display panel, which is a part of an external structure of the terminal device), and the back plate has at least a light-transmitting property; in the case where the first lens 2 is a front camera in a terminal device, the first plate 1 may be a screen cover in the terminal device (the screen cover is disposed above a display panel, which is a part of an external structure of the terminal device), the screen cover having a light-transmitting property.

As shown in fig. 1, the first plate body 1 has a light-transmitting region 11.

Illustratively, the light-transmitting region 11 may include a light-transmitting hole penetrating the first plate body 1; for example, the light-passing holes may be circular through holes, or the light-passing holes may be square through holes.

By way of example, the first plate body 1 may be a back plate of the terminal device, and the light-transmitting region 11 may be directly formed on the back plate; wherein the back plate may be a glass substrate or a part thereof may be a glass substrate. Alternatively, the first board body 1 may be a back board of the terminal device, on which the protruding portion is provided, and the light-transmitting area 11 is at least partially formed in the protruding portion; for example, a cover having light-transmitting properties is formed on the protruding portion, the cover forming the light-transmitting region 11; for another example, the protruding portion is formed with a cover member having light-transmitting properties and a through hole formed in the protruding portion, the cover member and the through hole forming the light-transmitting region 11; among other things, the cover may be a glass substrate, for example.

Alternatively, the first plate body 1 may have a rectangular plate-like structure, the light-passing hole is a circular through hole, and the axis of the light-passing hole is perpendicular to the first plate body 1.

Thus, the processing difficulty of the light passing hole can be reduced, and meanwhile, the assembly difficulty between the first plate body 1 and the first lens 2 is reduced.

In one example, the perpendicular to the light-transmitting region 11 is perpendicular to the first plate body 1. That is, the axis of the light-passing hole or the protruding portion is perpendicular to the first plate 1.

In some possible embodiments, the first lens 2 may be a periscope lens.

As shown in fig. 3, the first lens 2 further includes a prism 23, and the prism 23 is used to change the propagation direction of the light transmitted through the light-transmitting region 11.

The prism 23 has a first object side 231 and a first image side 232. The light transmitted through the light transmitting region 11 is irradiated onto the photosensitive element 22 through the first object side 231, the first image side 232, and the first lens 21 in this order.

The first object side 231 is located in the light emitting direction of the light transmitting region 11, that is, the axis of the light transmitting hole passes through the first object side 231.

The prism 23 also has a reflecting surface 233, the angle between the reflecting surface 233 and the first plate 1 being 45 °.

In this way, the light can vertically transmit through the light-transmitting region 11, and then, after being reflected by the reflecting surface 233, be irradiated onto the photosensitive element 22 in a direction parallel to the first plate body 1.

In one example, to ensure that prism 23 is capable of fully reflecting light transmitted through light-transmitting region 11, the projection of the light-transmitting aperture onto first object-side surface 231 of prism 23 along its axial direction may be entirely within the outer contour of first object-side surface 231 of prism 23.

Illustratively, as shown in fig. 3, the prism 23 may have a triangular prism structure, and the top and bottom surfaces of the triangular prism structure may each be isosceles right triangles and parallel to each other, and the three side walls are perpendicular to the top surface. The side walls of the two right-angle sides of the top surface are respectively a first object side surface 231 and a first image side surface 232 of the prism 23, and the side edge of the hypotenuse of the top surface is a reflecting surface 233 of the prism 23.

In one example, the photosensitive element 22 is perpendicular to the optical axis of the first lens 21.

In practice, when light is incident perpendicular to the first plate 1, the light beam transmitted through the light-transmitting region 11 is incident perpendicularly to the first object-side surface 231 of the prism 23, the incident light beam is reflected by the reflecting surface 233 of the prism 23, the light beam reflected by the reflecting surface 233 of the prism 23 is transmitted through the first image-side surface 232 of the prism 23 along a direction parallel to the first plate 1, and the photosensitive element 22 is in the light-emitting direction of the first lens 21, and after the photosensitive element 22 receives the light beam, the light beam can be processed, so as to obtain an image.

In one example, the shape of the projection of the first lens 21 on the photosensitive element 22 is rectangular.

As shown in fig. 4, the first lens 21 has a rectangular shape projected on the photosensitive element 22, the length of the projection in the first direction is a first value L1, and the length of the projection in the second direction is a second value L2, and the first value L1 is larger than the second value L2.

Wherein the first direction and the second direction are orthogonal to each other and are parallel to the photosensitive element 22.

The first value L1 is the length of the long axis of the first lens 21, and the second value L2 is the length of the short axis of the first lens 21, both of which are perpendicular to the optical axis.

In practice, when using a circular lens, since the lengths of the circular lens in the direction perpendicular to the optical axis thereof are all the same, the circular lens is limited by the thickness of the mobile phone, and the size of the circular lens is limited, resulting in a smaller light flux of the circular lens and poor imaging quality of the photosensitive element 22. With the first lens in the embodiment of the present disclosure, referring to fig. 5, the short axis of the first lens 21 may be disposed in the thickness direction of the mobile phone, and the long axis of the first lens 21 may be disposed in the length or width direction of the mobile phone. In this way, the first lens 21 is no longer a circular lens, and the dimensions of the first lens 21 in different directions are independent, so that the long axis dimension of the first lens 21 can be increased independently, the light passing amount of the first lens 21 is increased, and the imaging quality of the photosensitive element 22 is improved.

In practice, the maximum focal length that can be achieved by the lens is limited from a processing standpoint at the same size. In the related art, when a circular lens is used, the maximum focal length that the circular lens can achieve is very limited due to the limited thickness dimension of the mobile phone. With the first lens in the embodiment of the present disclosure, the long axis of the first lens 21 is disposed in the length or width direction of the mobile phone, and is not limited by the thickness of the mobile phone. In this way, the limit size corresponding to the first lens 21 in the long axis direction is improved, and accordingly, the focal length of the first lens 21 in the long axis direction can be improved, so that the depth of field sense of the long shot by the first lens 2 can be improved.

Alternatively, the ratio of the first value L1 to the second value L2 may lie in the interval [2,2.5 ].

In this way, the overall strength of the first lens 21 can be improved, and the processing difficulty thereof can be reduced.

Illustratively, the first value L1 may be 22mm and the second value L2 may be 10mm.

In some possible embodiments, the focal lengths of the object-side and image-side surfaces of the first lens 21 in different directions are different.

Referring to fig. 3, the curvature of the second object side 211 in the long axis direction (i.e., the L1 direction in the drawing, the first direction) is R1. Referring to fig. 5, the curvature of the second object side 211 in the short axis direction (i.e., the direction of L2 in the drawing, the second direction) is R2, r1+.r2.

Accordingly, the focal length of the second object side 211 in the first direction is a third value H1, the focal length of the second object side 211 in the second direction is a fourth value H2, and the third value H1 is not equal to the fourth value H2.

In one example, the curvature of the second object side 211 in the long axis direction is R1, the curvature of the second object side 211 in the short axis direction is R2, and R1 > R2 is satisfied.

In this way, the fourth value H2 of the focal length of the second object side 211 in the short axis direction can be made larger than the third value H1 of the focal length of the second object side 211 in the long axis direction.

Referring to fig. 3, the curvature of the second image side surface 212 in the long axis direction (i.e., the L1 direction in the drawing, the first direction) is R3. Referring to fig. 5, the curvature of the second image side surface 212 in the short axis direction (i.e., the direction of L2 in the drawing, the second direction) is R4, r3+.r4.

Accordingly, the focal length of the second image-side surface 212 in the first direction is a fifth value H3, the focal length of the second image-side surface 212 in the second direction is a sixth value H4, and the fifth value H3 is not equal to the sixth value H4.

In one example, the curvature of the second image side surface 212 in the long axis direction is R3, the curvature of the second image side surface 212 in the short axis direction is R4, and R3 > R4 is satisfied.

In the related art, a circular lens is generally employed in a portable terminal device, and for the circular lens, the focal length of the circular lens is the same in each direction perpendicular to the optical axis, that is, the focal length of the circular lens appears isotropic, which results in that when the circular lens is used, different directions of the lens cannot be set to different focal lengths according to actual needs. By adopting the first lens in the embodiment of the present disclosure, the focal lengths of the object side surface and the image side surface of the first lens 21 in different directions may be different, and the different directions of the lens may be set to different focal lengths according to actual needs, so as to improve the setting flexibility of the focal lengths of the lenses.

The outer contour of the first lens 21 in the embodiment of the present disclosure is polygonal, and focal lengths in the long axis direction and the short axis direction can be set independently. When the short axis of the first lens 21 is set in the thickness direction of the mobile phone, the curvature in the short axis direction can be set smaller, so as to improve the focal length of the first lens 21 in the short axis direction, and further improve the depth of field sense of the long shot by the first lens 2.

In one example, second object-side surface 211 is concave and second image-side surface 212 is convex.

In practice, the second object-side surface 211 is used to diverge light and the second image-side surface 212 is used to converge light.

Thus, when a plurality of lenses are sequentially arranged to form a lens group, the image side surface of each lens can be matched with the object side surface of the next lens, so that the length of the lens group in the optical axis direction is reduced, and the space utilization rate of the inside of the portable terminal is improved.

The foregoing description of the preferred embodiments of the present disclosure is provided for the purpose of illustration only, and is not intended to limit the disclosure to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and principles of the disclosure.

Claims

1. A portable terminal device, characterized in that the portable terminal device comprises a first plate body (1) and a first lens (2);

the first plate body (1) is provided with a light-transmitting area (11);

the first lens (2) comprises a first lens (21) and a photosensitive element (22), and light transmitted through the light-transmitting area (11) is irradiated onto the photosensitive element (22) through the first lens (21);

wherein the shape of the projection of the first lens (21) on the photosensitive element (22) is polygonal.

2. Portable terminal device according to claim 1, characterized in that the first lens (2) further comprises a prism (23);

the prism (23) has a first object side surface (231) and a first image side surface (232), and light transmitted through the light transmitting region (11) is irradiated onto the photosensitive element (22) through the first object side surface (231), the first image side surface (232) and the first lens (21) in order.

3. Portable terminal device according to claim 1 or 2, characterized in that the light sensitive element (22) is perpendicular to the optical axis of the first lens (21).

4. A portable terminal device according to claim 3, characterized in that the shape of the projection of the first lens (21) on the photosensitive element (22) is rectangular.

5. The portable terminal device according to claim 4, wherein the length of the projection in a first direction is a first value L1, the length of the projection in a second direction is a second value L2, the first value L1 is larger than the second value L2, and the first direction and the second direction are orthogonal to each other and are parallel to the photosensitive element (22).

6. The portable terminal device according to claim 2, wherein the first lens (21) has a second object side surface (211) and a second image side surface (212), and light transmitted through the light transmitting region (11) is irradiated onto the photosensitive element (22) through the first object side surface (231), the first image side surface (232), the second object side surface (211), and the second image side surface (212) in this order.

7. The portable terminal device according to claim 6, wherein a focal length of the second object side (211) in the first direction is a third value H1, a focal length of the second object side (211) in the second direction is a fourth value H2, the third value H1 is not equal to the fourth value H2, and the first direction, the second direction are orthogonal to each other and are all parallel to the photosensitive element (22).

8. The portable terminal device according to claim 7, wherein a focal length of the second image side surface (212) in the first direction is a fifth value H3, a focal length of the second image side surface (212) in the second direction is a sixth value H4, and the fifth value H3 is not equal to the sixth value H4.

9. The portable terminal device according to claim 6, wherein the second object side surface (211) is a concave surface and the second image side surface (212) is a convex surface.

10. Portable terminal device according to any of claims 1-2, 4-9, characterized in that the perpendicular of the light-transmitting area (11) is perpendicular to the first plate body (1).