CN217157070U - Double-lens projection device - Google Patents
Double-lens projection device Download PDFInfo
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- CN217157070U CN217157070U CN202220768062.7U CN202220768062U CN217157070U CN 217157070 U CN217157070 U CN 217157070U CN 202220768062 U CN202220768062 U CN 202220768062U CN 217157070 U CN217157070 U CN 217157070U
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Abstract
The utility model discloses a twin-lens projection arrangement, include: a light source for generating and outputting light; a collimating lens group which collimates the light emitted from the light source; an imaging chip capable of receiving and reflecting light; the prism system is used for totally reflecting the light transmitted by the collimating lens group onto the imaging chip and collimating and transmitting the light reflected by the imaging chip; the light splitting device is used for receiving the light transmitted by the prism system, separating the light to generate S polarized light and P polarized light, transmitting the P polarized light and reflecting the S polarized light; the projection main lens is used for receiving the P polarized light transmitted by the light splitting device and outputting the P polarized light to a screen; and the projection auxiliary lens is used for receiving the S polarized light reflected by the light splitting device and outputting the S polarized light to a screen projected by the projection main lens or other screens. The utility model discloses can remove the camera lens and form the picture of two not equidirectionals, can not reduce the luminance of projector when playing 3D moreover.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a twin-lens projection arrangement.
[ background of the invention ]
With the development of projection technology in recent years, projectors have been widely used in the fields of home, education, office, and the like, wherein projectors are more widely used because of the advantages of brightness, life, and color gamut. With the development of projection technology, the requirements on performance are higher and higher, and the performance mainly includes pictures, resolution, brightness, 3D film viewing and the like.
The camera lens of original projector is only one, very conventional only a direction can be carried out the projection, this function is when the projector is playing the 3D film, need increase a fixed polarizer equipment in the front of the camera lens, it is used for filtering and makes S light and P light divide the time-sharing and pass through, same time point or P light pass through promptly, or S light passes through, the vision difference through people' S eye synthesizes the 3D picture, only half light passes through equivalently, the film is played luminance and can be reduced.
Therefore, the present invention is based on the above disadvantages.
[ Utility model ] content
The utility model aims at overcoming prior art's not enough, providing a twin-lens projection arrangement, can remove the camera lens and form the picture of two not equidirectionals, also need not extra 3D equipment can be used to broadcast 3D, broadcast 3D moreover and can not reduce the luminance of projector.
The utility model discloses a realize through following technical scheme:
a dual lens projection apparatus, comprising:
a light source 1 for generating and outputting light;
a collimating lens group 8 for collimating the light emitted from the light source 1;
an imaging chip 2 capable of receiving light and reflecting the light;
the prism system 3 is used for totally reflecting the light transmitted by the collimating lens group 8 to the imaging chip 2 and collimating and transmitting the light reflected by the imaging chip 2;
a light splitting device 4 for receiving the light transmitted by the prism system 3, splitting the light to generate S-polarized light and P-polarized light, transmitting the P-polarized light, and reflecting the S-polarized light;
the projection main lens 5 is used for receiving the P polarized light transmitted by the light splitting device 4 and outputting the P polarized light to a screen;
and the projection auxiliary lens 6 is used for receiving the S polarized light reflected by the light splitting device 4 and outputting the S polarized light to a screen projected by the projection main lens 5 or other screens.
The dual-lens projection apparatus as described above is characterized in that the prism system 3 includes a first prism 31 for receiving the light emitted from the light source 1 and totally reflecting the light to the imaging chip 2, the first prism 31 can transmit the light reflected by the imaging chip 2, and a second prism 32 is disposed on the first prism 31 and can collimate and transmit the light transmitted by the first prism 31 to the light splitting device 4.
The dual-lens projector as described above is characterized in that the beam splitter 4 is rotatably disposed between the second prism 32 and the main projection lens 5, and the beam splitter 4 is rotatable to transmit the P-polarized light perpendicular to the direction of transmission of the light from the second prism 32 or to transmit the P-polarized light and reflect the S-polarized light at an acute angle to the direction of transmission of the light from the second prism 32.
The dual-lens projection device is characterized in that the projection secondary lens 6 can rotate relative to the projection primary lens 5 until the optical axis of the emitted light is parallel or forms an included angle, and a reflective mirror 7 capable of receiving the S-polarized light reflected by the light splitting device 4 and reflecting the S-polarized light to the projection secondary lens 6 is rotatably arranged between the light splitting device 4 and the projection secondary lens 6.
The two-lens projector is characterized in that the beam splitter 4 is a flat mirror coated with a light-deflecting film for reflecting the S-polarized light.
The above-mentioned dual-lens projection apparatus is characterized in that the collimating lens group 8 includes two first collimating lenses 81 and two second collimating lenses 82 with different light receiving angles.
Compared with the prior art, the utility model discloses there is following advantage:
1. the utility model discloses an increase a beam splitter in prism system light outlet, realize the separation of P polarized light and S polarized light, then throw out and synthesize the 3D picture again from projection main lens and projection secondary lens respectively, can realize the projection of 3D picture, need not additionally add 3D equipment outside projection arrangement, and the picture fuses and has improved luminance, so a projector also can accomplish the luminance that can not reduce the projector, also can form the picture of two not equidirectional through removing the projection secondary lens.
2. The utility model discloses in, the beam split device is rotatable to perpendicular to second prism 32 transmission light outgoing direction and with the transmission of P polarized light for only P polarized light can get into the projection main lens, realizes the single-lens projection, or rotatory to become the acute angle with second prism 32 transmission light outgoing direction and with the transmission of P polarized light with S polarized light reflection, make P polarized light and S polarized light get into projection main lens and projection auxiliary lens respectively, realize the twin-lens projection.
3. The utility model discloses a rotating vice camera lens of projection and reflector, can form the picture of two not equidirectionals, satisfy different projection positions and carry out the demand of projection simultaneously.
[ description of the drawings ]
Fig. 1 is a schematic structural view in an initial state of the present invention;
fig. 2 is a schematic structural diagram of the present invention after the projection auxiliary lens rotates.
[ detailed description ] embodiments
The invention will be further described with reference to the accompanying drawings:
as shown in fig. 1 to 2, a dual lens projection apparatus includes: a light source 1 for generating and outputting light; a collimating lens group 8 for collimating the light emitted from the light source 1; an imaging chip 2 capable of receiving light and reflecting the light; the prism system 3 is used for totally reflecting the light transmitted by the collimating lens group 8 to the imaging chip 2 and collimating and transmitting the light reflected by the imaging chip 2; a light splitting device 4 for receiving the light transmitted by the prism system 3, splitting the light to generate S-polarized light and P-polarized light, transmitting the P-polarized light, and reflecting the S-polarized light; the projection main lens 5 is used for receiving the P polarized light transmitted by the light splitting device 4 and outputting the P polarized light to a screen; and the projection auxiliary lens 6 is used for receiving the S polarized light reflected by the light splitting device 4 and outputting the S polarized light to a screen projected by the projection main lens 5 or other screens. The utility model discloses an it increases a beam splitting device 4 to export at prism system 3 light, realize the separation of P polarized light and S polarized light, then throw out and synthesize the 3D picture again from projection main lens 5 and projection auxiliary lens 6 respectively, can realize the projection of 3D picture, need not additionally add 3D equipment outside projection arrangement, and the picture fuses and has improved luminance, such a projector also can accomplish the luminance that can not reduce the projector, also can form the picture of two not equidirectional through removing the projection auxiliary lens.
Specifically, the prism system 3 includes a first prism 31 for receiving the light emitted from the light source 1 and totally reflecting the light to the imaging chip 2, the first prism 31 can transmit the light reflected from the imaging chip 2, and a second prism 32 for collimating and transmitting the light transmitted from the first prism 31 to the light splitting device 4 is disposed on the first prism 31. There is a tiny air gap between the first prism 31 and the second prism 32, and since the optical path of different light in a beam of light is different under the same physical distance after passing through the first prism 31 and the air, the light will deflect at the inclined plane of the first prism 31 and will not vertically exit to the lens, therefore, in this embodiment, the second prism 32 is arranged on the first prism 31 to supplement the optical path difference, so that the distance from the incident prism system 3 to the exit prism system 3 is the same, and the angle is not deflected.
Specifically, the light splitting device 4 is rotatably provided between the second prism 32 and the projection main lens 5, and the light splitting device 4 is rotatable to transmit the P-polarized light perpendicularly to the exit direction of the light transmitted by the second prism 32, or to transmit the P-polarized light and reflect the S-polarized light at an acute angle to the exit direction of the light transmitted by the second prism 32. The light splitting device can rotate to be perpendicular to the emergent direction of the transmission light of the second prism 32 to transmit the P polarized light, so that only the P polarized light can enter the projection main lens to realize single-lens projection, or rotate to form an acute angle with the emergent direction of the transmission light of the second prism 32 to transmit the P polarized light and reflect the S polarized light, so that the P polarized light and the S polarized light respectively enter the projection main lens and the projection auxiliary lens to realize double-lens projection.
In addition, the projection auxiliary lens 6 can rotate relative to the projection main lens 5 until the optical axis of the emitted light is parallel or forms an included angle, and a reflector 7 which can receive the S polarized light reflected by the light splitting device 4 and reflect the S polarized light to the projection auxiliary lens 6 is rotatably arranged between the light splitting device 4 and the projection auxiliary lens 6. By rotating the projection auxiliary lens 6 and the reflector 7, two pictures in different directions can be formed, and the requirement of simultaneous projection at different projection positions is met. Specifically, as shown in fig. 2, when the projection is required to be performed on two screens arranged at 90 °, the light splitting device 4 rotates 45 ° to make the P-polarized light and the S-polarized light exit in a direction perpendicular to each other, the reflective mirror 7 rotates to be parallel to the S-polarized light, so that the P-polarized light enters the projection main lens 5, the S-polarized light enters the projection auxiliary lens 6 and is projected onto the pictures in two different directions, both the viewer in front of the screen projected by the projection main lens 5 and the viewer in front of another screen projected by the projection auxiliary lens 6 can simultaneously view the pictures, the use is convenient, a plurality of projection devices do not need to be arranged, and the cost can be saved.
In this embodiment, the light splitting device 4 is a flat mirror coated with a light polarizing film for reflecting S-polarized light. Of course, the light splitting device 4 is not limited to a single lens, and other structures capable of splitting light are also within the scope of the present patent.
In this embodiment, the collimating lens group 8 includes two first collimating lenses 81 and second collimating lenses 82 with different light receiving angles, and the light angle emitted by the light source is modified into parallel light by passing through the two lenses at a small point, so as to avoid light deflection.
Claims (6)
1. A dual lens projection apparatus, comprising:
a light source (1) for generating and outputting light;
a collimating lens group (8) that collimates the light emitted from the light source (1);
an imaging chip (2) capable of receiving light and reflecting the light;
the prism system (3) is used for totally reflecting the light transmitted by the collimating lens group (8) to the imaging chip (2) and collimating and transmitting the light reflected by the imaging chip (2);
the light splitting device (4) is used for receiving the light transmitted by the prism system (3), splitting the light to generate S polarized light and P polarized light, transmitting the P polarized light and reflecting the S polarized light;
the projection main lens (5) is used for receiving the P polarized light transmitted by the light splitting device (4) and outputting the P polarized light to a screen;
and the projection auxiliary lens (6) is used for receiving the S-polarized light reflected by the light splitting device (4) and outputting the S-polarized light to a screen projected by the projection main lens (5) or other screens.
2. The dual-lens projection apparatus of claim 1, wherein: the prism system (3) comprises a first prism (31) which receives light emitted by the light source (1) and totally reflects the light to the imaging chip (2), the first prism (31) can transmit the light reflected by the imaging chip (2), and a second prism (32) which can collimate the light transmitted by the first prism (31) to the light splitting device (4) is arranged on the first prism (31).
3. The dual-lens projection apparatus of claim 2, wherein: the light splitting device (4) is rotatably arranged between the second prism (32) and the projection main lens (5), and the light splitting device (4) can be rotated to be vertical to the emergent direction of the transmitted light of the second prism (32) to transmit the P polarized light or rotated to form an acute angle with the emergent direction of the transmitted light of the second prism (32) to transmit the P polarized light and reflect the S polarized light.
4. The dual-lens projection apparatus of claim 1, wherein: the projection auxiliary lens (6) can rotate relative to the projection main lens (5) until the optical axis of the emitted light is parallel or forms an included angle, and a reflector (7) capable of receiving the S polarized light reflected by the light splitting device (4) and reflecting the S polarized light to the projection auxiliary lens (6) is rotatably arranged between the light splitting device (4) and the projection auxiliary lens (6).
5. The dual-lens projection apparatus of claim 1, wherein: the light splitting device (4) is a plane mirror with a surface coated with a light-deflecting film for reflecting S-polarized light.
6. The dual-lens projection apparatus of claim 1, wherein: the collimating lens group (8) comprises a first collimating lens (81) and a second collimating lens (82) which have different light receiving angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220768062.7U CN217157070U (en) | 2022-04-02 | 2022-04-02 | Double-lens projection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220768062.7U CN217157070U (en) | 2022-04-02 | 2022-04-02 | Double-lens projection device |
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| CN217157070U true CN217157070U (en) | 2022-08-09 |
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| CN202220768062.7U Active CN217157070U (en) | 2022-04-02 | 2022-04-02 | Double-lens projection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114077142A (en) * | 2021-10-29 | 2022-02-22 | 歌尔光学科技有限公司 | Projection device, control method of projection device and projection system |
| CN114077143A (en) * | 2021-10-29 | 2022-02-22 | 歌尔光学科技有限公司 | Projection device, control method of projection device and projection system |
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2022
- 2022-04-02 CN CN202220768062.7U patent/CN217157070U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114077142A (en) * | 2021-10-29 | 2022-02-22 | 歌尔光学科技有限公司 | Projection device, control method of projection device and projection system |
| CN114077143A (en) * | 2021-10-29 | 2022-02-22 | 歌尔光学科技有限公司 | Projection device, control method of projection device and projection system |
| CN114077143B (en) * | 2021-10-29 | 2024-04-30 | 歌尔光学科技有限公司 | Projection device, control method of projection device and projection system |
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