CN208421511U - A kind of camera chain - Google Patents
A kind of camera chain Download PDFInfo
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- CN208421511U CN208421511U CN201820901718.1U CN201820901718U CN208421511U CN 208421511 U CN208421511 U CN 208421511U CN 201820901718 U CN201820901718 U CN 201820901718U CN 208421511 U CN208421511 U CN 208421511U
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- 230000003287 optical effect Effects 0.000 claims abstract description 37
- 230000004888 barrier function Effects 0.000 claims description 6
- 230000008033 biological extinction Effects 0.000 claims description 5
- 229910052755 nonmetal Inorganic materials 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 239000004922 lacquer Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
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Abstract
The utility model discloses a kind of camera chains, including multiple video cameras, and with the one-to-one right-angle prism of each video camera；Wherein, the opposite placement angle between two neighboring right-angle prism is fixed；The inclined-plane of each right-angle prism is reflecting surface；Each right-angle prism is used to that light to be made successively to be emitted to corresponding video camera after the refraction of the second right-angle surface of the first right-angle surface refraction of right-angle prism, slant reflection, right-angle prism；And the virtual optical center for making the extended line of the incident ray on inclined-plane converge the correspondence video camera to be formed is overlapped.Due to passing through setting and the one-to-one right-angle prism of multiple video cameras, and the opposite placement angle between two neighboring right-angle prism is set, corresponding right-angle prism can be used and convert the optical center inside each video camera to the virtual optical center outside each video camera and to overlap, therefore, image parallactic is efficiently solved the problems, such as.
Description
Technical Field
The utility model relates to the field of optical technology, especially, relate to a camera system.
Background
In the prior art, a camera system including a plurality of cameras is mainly used for seamlessly splicing images shot by the plurality of cameras into a whole image through an algorithm. In specific implementation, generally, the optical centers of the cameras are made to approach as close as possible by adjusting the placement positions of the cameras, so that the projection distances of the same point in different cameras are consistent, the requirements of an image stitching algorithm are further met, and image parallax is eliminated. However, since the optical centers are located inside the cameras, the optical centers of different cameras cannot be overlapped by adopting a scheme of adjusting the positions of the cameras, so that the images shot by different cameras have parallax.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides a camera system for solving the technical problem in the prior art that the images of a plurality of cameras have parallax.
Therefore, an embodiment of the present invention provides a camera system, which includes a plurality of cameras, and right-angle prisms corresponding to the cameras one-to-one; wherein,
the relative placing angle between two adjacent right-angle prisms is fixed;
the inclined plane of each right-angle prism is a reflecting surface;
each right-angle prism is used for enabling light rays to be refracted by a first right-angle surface of the right-angle prism, reflected by the inclined surface and refracted by a second right-angle surface of the right-angle prism in sequence and then to be emitted to the corresponding camera; and virtual optical centers corresponding to the cameras formed by converging extension lines of incident light rays of the inclined planes are overlapped.
In a possible implementation manner, in the camera system provided by the embodiment of the present invention, two adjacent cameras have partially overlapped shooting viewing angles.
In a possible implementation manner, in the camera system provided by the embodiment of the present invention, the right-angle prism is an isosceles right-angle prism.
In one possible implementation manner, in the camera system provided by the embodiment of the present invention, the refractive index of the right-angle prism is greater than or equal to 1.8, and the horizontal field angle of each camera is less than or equal to 40 °.
In one possible implementation manner, in the camera system provided by the embodiment of the present invention, the inclined plane has a reflective film.
In a possible implementation manner, in the above-mentioned camera system provided in the embodiment of the present invention, each of the right-angle prisms are spliced with each other, and adjacent two splicing surfaces between the right-angle prisms are the first right-angle surface, the second right-angle surface and a surface outside the inclined surface.
In a possible implementation manner, in the camera system provided in an embodiment of the present invention, the splicing surface is an extinction surface;
the extinction surface is used for eliminating stray light between two adjacent right-angle prisms.
In a possible implementation manner, in the camera system provided in the embodiment of the present invention, the camera system further includes: the light barrier is arranged between two adjacent cameras and is coplanar with the splicing surface;
the light barrier is used for ensuring that two adjacent cameras respectively only receive emergent rays of the corresponding right-angle prisms.
In a possible implementation manner, in the camera system provided in the embodiment of the present invention, the camera system further includes: the polarizer is arranged between the camera and the corresponding right-angle prism;
the polarizer is used for eliminating the reflected polarized light on the non-metal surface.
In a possible implementation manner, in the camera system provided in the embodiment of the present invention, the polarizer is a circular polarizer.
The utility model discloses beneficial effect as follows:
the embodiment of the utility model provides a camera system, including a plurality of cameras to and the right angle prism with each camera one-to-one; the relative placing angle between two adjacent right-angle prisms is fixed; the inclined plane of each right-angle prism is a reflecting surface; each right-angle prism is used for enabling light rays to be refracted by a first right-angle surface of the right-angle prism, reflected by an inclined surface and refracted by a second right-angle surface of the right-angle prism in sequence and then to be emitted to a corresponding camera; and virtual optical centers of corresponding cameras formed by converging extension lines of incident light rays of the inclined planes are superposed. Because the right-angle prisms which are in one-to-one correspondence with the cameras are arranged, and the relative placing angle between every two adjacent right-angle prisms is set, the corresponding right-angle prisms can be adopted to convert the optical center inside each camera into the virtual optical center which is positioned outside each camera and is overlapped with each other, and therefore the problem of image parallax is effectively solved.
Drawings
Fig. 1 is a schematic structural diagram of a camera system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a virtual optical center of a camera according to an embodiment of the present invention;
fig. 3 is a schematic diagram of virtual optical center coincidence of the cameras provided by the embodiment of the present invention;
FIG. 4a is a schematic diagram of the right-angle prisms before being spliced;
fig. 4b is a schematic diagram of the right-angle prisms after splicing.
Detailed Description
The following describes in detail a specific implementation of a camera system according to an embodiment of the present invention with reference to the accompanying drawings. It should be noted that the embodiments described in this specification are only some embodiments of the present invention, and not all embodiments; and in case of conflict, the embodiments and features of the embodiments in the present application may be combined with each other; in addition, based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without any creative work belong to the protection scope of the present invention.
Specifically, the embodiment of the present invention provides a camera system, as shown in fig. 1, including a plurality of cameras 101, and right-angle prisms 102 corresponding to the cameras 101 one to one; wherein,
as shown in fig. 2 and 3, the relative arrangement angle between two adjacent right-angle prisms 102 is fixed;
the inclined plane S1 of each right-angle prism 102 is a reflecting surface;
each right-angle prism 102 is used for enabling light rays to be refracted by a first right-angle surface S2, reflected by an inclined surface S1 and refracted by a second right-angle surface S3 of the right-angle prism 102 in sequence and then to be emitted to the corresponding camera 101; and the virtual optical centers O' of the corresponding cameras 101 formed by converging the extended lines of the incident light rays of the inclined surface S1 are made to coincide.
The embodiment of the utility model provides an among the above-mentioned camera system, owing to through setting up the right angle prism 102 with a plurality of camera 101 one-to-one to set up the relative angle of putting between two adjacent right angle prisms 102, can adopt the right angle prism 102 that corresponds to turn into the inside optical center O of each camera 101 and lie in the outside virtual optical center O' of each camera 101 and coincidence each other, consequently, effectively solved image parallax problem. Compared with a plane prism, the right-angle prism 102 is adopted to enable the position of a virtual optical center O' which is formed by the light rays firstly refracted by the first right-angle surface S2 and then reflected by the inclined surface S1 to be farther, so that the adjustment angle is smaller and more flexible.
Specifically, in the camera system provided by the embodiment of the present invention, as shown in fig. 2, when the light is refracted from the first right-angle surface S2 of the right-angle prism 102 at the view angle V1 and enters the right-angle prism 102, the view angle becomes V2, and the reflection occurs on the inclined surface S1 of the right-angle prism 102 to generate a mirror image, the incident light of the inclined surface S1 (i.e. the refracted light of the first right-angle surface S2) forms a virtual optical center O' equivalent to the optical center O inside the camera 101 on the optical axis extension line of the right-angle prism 102 after the inclined surface S1, and the view angle V2 to the light is equal to the view angle V3 generated by the reflected light of the inclined surface S1; then, the reflected light of the inclined plane S1 is refracted out of the right-angle prism 102 by the second right-angle surface S3 of the right-angle prism 102, and enters the camera 101 at a viewing angle V4, and the viewing angle V4, which is formed by the optical center O inside the camera 101, is equal to the viewing angle V1 of the light of the first right-angle surface S2.
As can be seen from the above description, the optical center O inside the camera 101 can be converted into the virtual optical center O ' equivalent to the optical center O on the optical axis extension line of the right-angle prism 102 by the right-angle prism 102, so that when the camera system includes a plurality of cameras 101, the optical centers O inside the cameras 101 can be all externalized into the virtual optical centers O ' on the optical axis extension lines of the corresponding right-angle prisms 102 by providing the right-angle prisms 102 corresponding to the cameras 101 one by one, and the virtual optical centers O ' of the cameras 101 can be overlapped by setting the relative placement angles of the right-angle prisms 102, so as to eliminate the parallax of the same point in the images captured by the different cameras 101.
Further, in the above-mentioned camera system provided by the embodiment of the present invention, not only the virtual optical centers O' of the cameras 101 can coincide, but also, as shown in fig. 3, the shooting angles of any two adjacent cameras 101 can also partially coincide (the shaded portion in fig. 3), so that the blind area of the whole shot image caused by the angle difference of the cameras 101 can be avoided. And in particular implementations, the coincident camera images can be resolved by image processing. Further, the size of the overlapping portion of the shooting angles of the two adjacent cameras 101 can be adjusted by the size of the refractive index of the right-angle prism 102.
Preferably, in order to adjust the virtual optical centers O' of the cameras 101 to coincide at a point, the right-angle prism 102 is an isosceles right-angle prism in the camera system provided by the embodiment of the present invention.
In the above-described camera system provided by the embodiment of the present invention, the inclined plane S1 of which each rectangular prism 102 is a reflecting surface can be implemented in the following, but not limited to, two possible ways.
Specifically, the first possible implementation manner is: the right-angle prism 102 has a refractive index of 1.8 or more, and the horizontal angle of view of each camera 101 is 40 ° or less. That is, the right-angle prism 102 made of a high refractive index material is selected, and under the condition that the horizontal field angle of the camera 101 is not more than 40 °, the reflection angle of the marginal ray of the viewing angle V2 on the inclined plane S1 is larger than the total emission critical angle, so that the total reflection occurs on the inclined plane S1. Of course, the refractive index of the right-angle prism 102 and the horizontal angle of view of the camera 101 may be other values as long as the edge light of the angle of view V2 can be totally reflected on the inclined surface S1, and the refractive index is not particularly limited herein.
A second possible implementation is: the inclined surface S1 has a reflection film, that is, specular reflection of light is achieved by plating the reflection film on the inclined surface S1.
In addition, in practical implementation, since the first possible implementation method does not need to plate a reflective film on the inclined surface S1 of the right-angle prism 102, so as to ensure the system life, it is preferable to select the first possible implementation method to implement the reflective function of the inclined surface S1 of the right-angle prism 102.
In specific implementation, because the relative placement angle between each rectangular prism 102 is fixed, in order to flexibly adjust the placement angle of all rectangular prisms 102, preferably, in the camera system provided in the embodiment of the present invention, as shown in fig. 4a and 4b, each rectangular prism 102 can be spliced into a whole, and the splicing surface between two adjacent rectangular prisms 102 is the surface S4 outside the first rectangular surface S2, the second rectangular surface S3 and the inclined surface S1.
Specifically, in the camera system provided by the embodiment of the present invention, each right-angle prism 102 may be formed into a whole prism by gluing, and of course, other splicing methods known to those skilled in the art may also be used, which is not limited herein.
Further, because the light in two adjacent right-angle prisms 102 may be incident to each other through the splicing surface S4 and become useless and can influence the parasitic light of the imaging effect, then, in the above-mentioned camera system that the embodiment of the present invention provides, the splicing surface S4 can be set as the extinction surface to eliminate the parasitic light between two adjacent right-angle prisms 102.
When the embodiment of the utility model provides an in the above-mentioned camera system that provides, can paint black lacquer after the concatenation face S4 to be about to splice carries out dull polish processing before the concatenation to adopt black lacquer to eliminate the parasitic light between the adjacent right angle prism 102, prevent that the light of adjacent right angle prism 102 from getting into each other. Of course, other extinction methods known to those skilled in the art may be used, and are not specifically limited herein.
In practical implementation, most of the emergent light of the rectangular prism 102 may enter the corresponding camera 101, and the rest of the emergent light enters the camera 101 adjacent to the corresponding camera 101, so that the embodiment of the present invention provides the above-mentioned camera system, as shown in fig. 1, which may further include: and the light barrier 103 is arranged between two adjacent cameras 102 and is coplanar with the splicing surface, so that the two adjacent cameras 101 are ensured to respectively only receive the emergent rays of the corresponding right-angle prisms 102. Further, the light barrier 103 may be fixed to the housing of the camera 101.
In practical implementation, light in the surrounding environment, generally, the reflection polarized light of the non-metal surface, may also enter the camera 101, and further affect the image capturing effect, so that, preferably, in the camera system provided in the embodiment of the present invention, as shown in fig. 1, the camera system may further include: the polarizer 104 is disposed between the camera 101 and the corresponding right-angle prism 102, so that the polarizer 104 is used to eliminate the reflected polarized light on the non-metal surface, and only the emergent light of the corresponding right-angle prism 102 enters the camera 101, thereby ensuring the image capturing effect.
Preferably, to ensure that the light entering the camera 101 is still close to natural light, the polarizer 104 is a circular polarizer in the camera system provided by the embodiment of the present invention. Of course, in the implementation, the polarizer 104 may be a linear polarizer, but compared with a circular polarizer, the use of the linear polarizer reduces the energy of the light incident on the camera 101 by 50%, which affects the shooting effect.
The embodiment of the utility model provides an above-mentioned camera system, including a plurality of cameras to and the right angle prism with each camera one-to-one; the relative placing angle between two adjacent right-angle prisms is fixed; the inclined plane of each right-angle prism is a reflecting surface; each right-angle prism is used for enabling light rays to be refracted by a first right-angle surface of the right-angle prism, reflected by an inclined surface and refracted by a second right-angle surface of the right-angle prism in sequence and then to be emitted to a corresponding camera; and virtual optical centers of corresponding cameras formed by converging extension lines of incident light rays of the inclined planes are superposed. Because the right-angle prisms which are in one-to-one correspondence with the cameras are arranged, and the relative placing angle between every two adjacent right-angle prisms is set, the corresponding right-angle prisms can be adopted to convert the optical center inside each camera into the virtual optical center which is positioned outside each camera and is overlapped with each other, and therefore the problem of image parallax is effectively solved. Compared with a plane prism, the right-angle prism is adopted, so that incident light is refracted by the first right-angle surface firstly, and then reflected by the inclined surface to form a superposed virtual optical center, the position of the superposed virtual optical center is farther, and the adjustment angle is smaller and more flexible.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A camera system comprising a plurality of cameras, characterized by further comprising: the right-angle prisms correspond to the cameras one to one; wherein,
the relative placing angle between two adjacent right-angle prisms is fixed;
the inclined plane of each right-angle prism is a reflecting surface;
each right-angle prism is used for enabling light rays to be refracted by a first right-angle surface of the right-angle prism, reflected by the inclined surface and refracted by a second right-angle surface of the right-angle prism in sequence and then to be emitted to the corresponding camera; and virtual optical centers corresponding to the cameras formed by converging extension lines of incident light rays of the inclined planes are overlapped.
2. The camera system of claim 1, wherein the shooting angles of view of two adjacent cameras partially coincide.
3. The camera system of claim 1, wherein the right angle prism is an isosceles right angle prism.
4. The camera system of claim 1, wherein the right angle prism has a refractive index greater than or equal to 1.8 and a horizontal field angle of each of the cameras is less than or equal to 40 °.
5. The camera system of claim 1, wherein the angled surface has a reflective film.
6. The camera system according to any one of claims 1 to 5, wherein the right-angle prisms are spliced to each other, and a splicing surface between two adjacent right-angle prisms is a surface other than the first right-angle surface, the second right-angle surface, and the inclined surface.
7. The camera system of claim 6, wherein the stitching surface is a matte surface;
the extinction surface is used for eliminating stray light between two adjacent right-angle prisms.
8. The camera system of claim 6, further comprising: the light barrier is arranged between two adjacent cameras and is coplanar with the splicing surface;
the light barrier is used for ensuring that two adjacent cameras respectively only receive emergent rays of the corresponding right-angle prisms.
9. The camera system of any one of claims 1-5, further comprising: the polarizer is arranged between the camera and the corresponding right-angle prism;
the polarizer is used for eliminating the reflected polarized light on the non-metal surface.
10. The camera system of claim 9, wherein the polarizer is a circular polarizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820901718.1U CN208421511U (en) | 2018-06-11 | 2018-06-11 | A kind of camera chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820901718.1U CN208421511U (en) | 2018-06-11 | 2018-06-11 | A kind of camera chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208421511U true CN208421511U (en) | 2019-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820901718.1U Active CN208421511U (en) | 2018-06-11 | 2018-06-11 | A kind of camera chain |
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| Country | Link |
|---|---|
| CN (1) | CN208421511U (en) |
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2018
- 2018-06-11 CN CN201820901718.1U patent/CN208421511U/en active Active
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