CN212012715U - Device for expanding focal length of camera and terminal thereof - Google Patents
Device for expanding focal length of camera and terminal thereof Download PDFInfo
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- CN212012715U CN212012715U CN202020734298.XU CN202020734298U CN212012715U CN 212012715 U CN212012715 U CN 212012715U CN 202020734298 U CN202020734298 U CN 202020734298U CN 212012715 U CN212012715 U CN 212012715U
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Abstract
The utility model provides a device and terminal for extending camera focus relates to camera technical field. The device includes main screen and vice screen: the main screen is provided with a rear camera, the area of the auxiliary screen corresponding to the rear camera on the main screen is provided with a hole structure, and the hole structure is provided with a lens; when the auxiliary screen is folded to the back of the main screen, the center of the lens on the auxiliary screen is aligned with the center of the rear camera on the main screen. This disclosed embodiment is through the folding characteristic who utilizes the double screen cell-phone, when the vice screen is folded main screen back, set up in the extension of getting the thing camera lens that the physics camera lens of vice screen can regard as the rearmounted camera of main screen, thereby the focus of the rearmounted camera of main screen has indirectly been lengthened, and then guaranteed under the prerequisite that does not increase cell-phone thickness, the extension of rearmounted focus of making a video recording has been realized, the focus distance of rearmounted camera has been increased, and this disclosed embodiment only brings and sets up the trompil structure at the vice screen, and the increase of the small cost of the camera lens is set up in the trompil structure.
Description
Technical Field
The present disclosure relates to the field of camera technologies, and in particular, to a device for extending a focal length of a camera and a terminal thereof.
Background
In the smart phone industry, the thickness of the whole smart phone is thinner and thinner, and the camera spelling at the point of sale of the smart phone also reaches the stage of white fever. Because the flexible space of the camera is very limited, therefore, on the premise of not changing the physical focal length of the camera, it is very difficult to improve the shooting distance of the camera, and the high-cost camera is often not favored by consumers, if the shooting distance is to be improved (i.e. higher multiple zooming), the thickness of the whole mobile phone is increased invisibly, which is contrary to the current ultra-thin idea selected by consumers, so that on the premise of not increasing the thickness of the mobile phone, improving the shooting distance of the mobile phone is a technical problem in the industry.
SUMMERY OF THE UTILITY MODEL
The embodiment of the disclosure provides a device and a terminal for extending the focal length of a camera, and the technical scheme is as follows:
the device for expanding the focal length of the camera comprises a main screen and an auxiliary screen:
the main screen is provided with a rear camera, the auxiliary screen is provided with a hole structure corresponding to the area of the rear camera on the main screen, and the hole structure is provided with a lens;
when the auxiliary screen is folded to the back of the main screen, the center of the lens on the auxiliary screen is aligned with the center of the rear camera on the main screen.
In one embodiment, the diameter of the lens on the secondary screen is the same as the diameter of the lens of the rear camera on the primary screen.
In one embodiment, an aperture is disposed on the lens.
In one embodiment, the aperture has a diameter of 8 mm.
In one embodiment, the aperture has a light transmittance of not less than 90%.
In one embodiment, a black coating is provided around the aperture.
In one embodiment, a circular opening structure is arranged on the auxiliary screen corresponding to the area of the rear camera on the main screen, and a circular lens is arranged on the circular opening structure.
In one embodiment, the imaging focal length L of the rear camera on the main screen is:
L＝L1+d1+d2
wherein L is1Is the maximum visible focal length of the rear camera on the main screen, d1Thickness of the sub-screen, d2Is the thickness of the lens on the secondary screen.
The embodiment of the disclosure also provides a terminal, which comprises the device for extending the focal length of the camera.
According to the embodiment of the disclosure, by utilizing the folding characteristic of the dual-screen mobile phone, when the auxiliary screen is folded to the back of the main screen, the physical lens arranged on the auxiliary screen can be used as an extension of the object taking lens of the rear camera of the main screen, so that the focal length of the rear camera of the main screen is indirectly lengthened, the lengthening of the focal length of the rear camera is realized on the premise of not increasing the thickness of the mobile phone, and the focusing distance of the rear camera is increased; and the embodiment of the present disclosure only brings an increase in the small cost of providing the opening structure on the sub-screen and providing the lens on the opening structure.
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
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic structural diagram of an apparatus for extending a focal length of a camera provided in the disclosed embodiments;
FIG. 2 is a schematic diagram of optical imaging of a camera of a mobile phone in the prior art;
fig. 3 is a schematic diagram of optical imaging of a mobile phone camera in an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a schematic structural diagram of an apparatus for extending a focal length of a camera according to the disclosed embodiment. As shown in fig. 1, the device includes a main screen 101 and a sub-screen 102:
a rear camera 1011 is arranged on the main screen 101, an opening structure is arranged on the auxiliary screen 102 corresponding to the rear camera 1011 on the main screen 101, and a lens 1021 is arranged on the opening structure;
when the sub-screen 102 is folded to the back of the main screen 101, the center of the lens 1021 on the sub-screen 102 is aligned with the center of the rear camera 1011 on the main screen 101.
Fig. 2 is a schematic diagram of optical imaging of a camera of a mobile phone in the prior art. As shown in fig. 2, when there is no secondary screen as the focal length extension, the lens inside the rear camera head of the mobile phone is used as the light incident point, if the focal length of the incident lens is not increased, the size of the image P of the object S inside the mobile phone is determined by the distance between the object S and the camera lens a, and the maximum shooting distance is L1That is, under a predetermined imaging size, the mobile phone can shoot the farthest object image with a distance L1。
Fig. 3 is a schematic diagram of optical imaging of a mobile phone camera in an embodiment of the present disclosure. As shown in fig. 3, when an optical lens structure a1 (lens 1021 in the embodiment of the present disclosure) is added before an original camera lens (rear camera 1011 in the embodiment of the present disclosure), this lens structure can be used as an incident light lens of the original camera lens, on the premise that the shooting position of the mobile phone and the position of the object to be shot are not moved, the object to be shot S is imaged as P1 inside the mobile phone, which is further forward than the original position, and if the imaging position is to be consistent with the original position, the object to be shot S needs to be moved L away from the mobile phone2The distance of (d); or moving the mobile phone L in the direction far away from the shooting object2The distance of (c). Therefore, the device in the embodiment of the disclosure can prolong the shooting focal length of the mobile phone by L2Is a distance of L2Depending on the thickness d of the secondary screen of the handset1And thickness d of lens on sub-screen2And (4) summing.
As can be seen, in the embodiment of the present disclosure, when the sub-screen 102 is rotated 180 ° counterclockwise along the rotation axis 103 in fig. 1, the lens 1021 on the sub-screen 102 coincides with the center of the rear camera 1011 on the main screen 101, and external light enters the rear camera 1011 on the main screen 101 through the lens 1021 on the sub-screen 102 to form an image inside the mobile phone. Wherein, when the sub-screen 102 is rotated by 180 ° counterclockwise along the rotation axis 103 in fig. 1, the imaging focal length L of the rear camera on the main screen in the embodiment of the present disclosure becomes:
L＝L1+d1+d2；
therefore, the imaging focal length L of the rear camera in the embodiment of the present disclosure is larger than the imaging focal length L of the camera of the mobile phone in the prior art1Prolong d1+d2The distance of (c).
According to the embodiment of the disclosure, by utilizing the folding characteristic of the dual-screen mobile phone, when the auxiliary screen is folded to the back of the main screen, the physical lens arranged on the auxiliary screen can be used as an extension of the object taking lens of the rear camera of the main screen, so that the focal length of the rear camera of the main screen is indirectly lengthened, the lengthening of the focal length of the rear camera is realized on the premise of not increasing the thickness of the mobile phone, and the focusing distance of the rear camera is increased; and the embodiment of the present disclosure only brings an increase in the small cost of providing the opening structure on the sub-screen and providing the lens on the opening structure.
In one embodiment, as shown in FIG. 1, the diameter of the lens 1021 on the secondary screen 102 is the same as the diameter of the lens of the rear camera 101 on the primary screen 101.
The diameter of the lens on the auxiliary screen is the same as that of the lens of the rear camera on the main screen, so that incident light entering along the lens on the auxiliary screen can completely enter the lens of the rear camera on the main screen.
In one embodiment, an aperture is disposed on the lens.
Preferably, the light transmittance of the aperture is not less than 90%.
Optionally, the aperture has a diameter of 8 mm.
In one embodiment, a black coating is provided around the aperture.
The embodiment of the disclosure prevents the ambient light from being dry by providing the black coating layer around the aperture.
In one embodiment, as shown in fig. 1, a circular opening structure is arranged on the auxiliary screen 102 corresponding to the area of the rear camera 1011 on the main screen 101, and a circular lens 1011 is arranged on the circular opening structure.
The embodiment of the disclosure also provides a terminal, which comprises the device for extending the focal length of the camera.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (9)
1. An apparatus for extending a focal length of a camera, the apparatus comprising a primary screen and a secondary screen:
the main screen is provided with a rear camera, the auxiliary screen is provided with a hole structure corresponding to the area of the rear camera on the main screen, and the hole structure is provided with a lens;
when the auxiliary screen is folded to the back of the main screen, the center of the lens on the auxiliary screen is aligned with the center of the rear camera on the main screen.
2. The apparatus according to claim 1, wherein the diameter of the lens of the secondary screen is the same as the diameter of the lens of the rear camera of the primary screen.
3. The apparatus for extending the focal length of a camera according to claim 1 or 2, wherein an aperture is provided on the lens.
4. The apparatus according to claim 3, wherein the light transmittance of the aperture is not less than 90%.
5. The apparatus for extending the focal length of a camera according to claim 4, wherein the aperture has a diameter of 8 mm.
6. The apparatus of claim 3, wherein a black coating is disposed around the aperture.
7. The device for extending the focal length of a camera according to claim 1 or 2, wherein the area of the secondary screen corresponding to the rear camera on the primary screen is provided with a circular opening structure, and a circular lens is arranged on the circular opening structure.
8. The apparatus according to claim 5, wherein the calculation formula of the imaging focal length L of the rear camera on the main screen is as follows:
L＝L1+d1+d2
wherein L is1Is the maximum visible focal length of the rear camera on the main screen, d1Thickness of the sub-screen, d2Is the thickness of the lens on the secondary screen.
9. A terminal characterized in that it comprises the device for extending the focal length of a camera according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020734298.XU CN212012715U (en) | 2020-05-07 | 2020-05-07 | Device for expanding focal length of camera and terminal thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020734298.XU CN212012715U (en) | 2020-05-07 | 2020-05-07 | Device for expanding focal length of camera and terminal thereof |
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| CN212012715U true CN212012715U (en) | 2020-11-24 |
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| CN202020734298.XU Active CN212012715U (en) | 2020-05-07 | 2020-05-07 | Device for expanding focal length of camera and terminal thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113395371A (en) * | 2021-06-09 | 2021-09-14 | 京东方科技集团股份有限公司 | Display panel, display device and terminal |
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- 2020-05-07 CN CN202020734298.XU patent/CN212012715U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113395371A (en) * | 2021-06-09 | 2021-09-14 | 京东方科技集团股份有限公司 | Display panel, display device and terminal |
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