CN217718410U - Optical machine and projector - Google Patents
Optical machine and projector Download PDFInfo
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- CN217718410U CN217718410U CN202220690967.7U CN202220690967U CN217718410U CN 217718410 U CN217718410 U CN 217718410U CN 202220690967 U CN202220690967 U CN 202220690967U CN 217718410 U CN217718410 U CN 217718410U
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Abstract
The embodiment of the application provides an ray apparatus and projector, the ray apparatus includes: a light source generator for emitting a light beam; the display chip is used for imaging; the diaphragm is arranged on one side, used for imaging, of the display chip, a through hole is formed in the center of the diaphragm and used for allowing light rays from an imaging area of the display chip to pass through, and the part, located outside the through hole, of the diaphragm is used for blocking the light rays from the display chip and outside the imaging area of the display chip from passing through. Compared with the prior art, the optical machine of the embodiment of the application further comprises a diaphragm, a through hole is formed in the center of the diaphragm, and light rays from the imaging area of the display chip pass through the through hole and are projected to the outside to form projection. The part of the diaphragm outside the through hole blocks light from the display chip outside the imaging area to pass through, so that the projection range is limited, the gray edge outside the imaging area and stray light in the projection lens barrel are effectively removed, the contrast is improved, the definition of projection imaging is improved, and the display effect is improved.
Description
Technical Field
The present disclosure relates to optical machines, and particularly to an optical machine and a projector.
Background
With the continuous progress of projector technology, the requirements of people on the display effects of the projector, such as brightness, contrast and the like, are continuously improved. The quality of the display effect of the projector mainly depends on the optical machine. In the related art, the optical engine generally includes a light source for emitting a light beam, a display chip for forming a projection image, and other optical devices, the projection image being projected to the outside through a projection lens.
However, due to process limitations, part of light still enters the projection lens at a portion of the display chip outside the imaging area, which not only causes a gray edge to be generated outside the effective imaging area, but also causes part of light to be reflected multiple times in the projection lens barrel to form stray light, thereby affecting the definition of projection imaging and making the display effect worse.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the present application is to provide an optical machine and a projector, so as to improve the definition of projection imaging, thereby improving the display effect. The specific technical scheme is as follows:
an embodiment of a first aspect of the present application provides an optical machine, including: a light source generator for emitting a light beam; the display chip is used for imaging; the diaphragm sets up the one side that is used for the formation of image of display chip, the center department of diaphragm is provided with the through-hole, the through-hole is used for supplying to come from the light in the formation of image region of display chip passes through, the diaphragm be located the part outside the through-hole is used for blockking and comes from the light outside the formation of image region of display chip passes through.
The ray apparatus of this application embodiment includes light source generator and display chip, and light source generator is used for launching the light beam, and display chip is used for the formation of image. Compared with the prior art, the optical machine of the embodiment of the application further comprises a diaphragm, and the diaphragm is arranged on one side, used for imaging, of the display chip. And a through hole is formed in the center of the diaphragm, and light rays from the imaging area of the display chip are transmitted through the through hole and projected to the outside to form a projection. The part of the diaphragm outside the through hole blocks light from the display chip outside the imaging area to pass through, so that the projection range is limited, the gray edge outside the imaging area and stray light in the projection lens cone are effectively removed, the contrast is improved, the definition of projection imaging is improved, and the display effect is improved.
In addition, the optical machine according to the embodiment of the present application may further have the following additional technical features:
in some embodiments of the present application, the diaphragm is a plate-like structure.
In some embodiments of the present application, the diaphragm is a metal plate.
In some embodiments of the present application, the diaphragm has a thickness of 0.2mm to 0.4mm.
In some embodiments of the present application, a distance between the diaphragm and the display chip is less than or equal to 0.2mm.
In some embodiments of the present application, the light engine further comprises a first heat sink for dissipating heat from the light source generator.
In some embodiments of the present application, the first heat sink is a heat pipe heat sink.
In some embodiments of the present application, the optical machine further includes a second heat sink, and the second heat sink is configured to dissipate heat of the display chip.
In some embodiments of the present application, the display chip is an LCOS chip.
Embodiments of a second aspect of the present application provide a projector, including the light engine according to any of the above embodiments.
The projector of the embodiment of the application comprises an optical machine, wherein the optical machine comprises a light source generator and a display chip, the light source generator is used for emitting a light beam, and the display chip is used for imaging. Compared with the prior art, the optical machine of the embodiment of the application further comprises a diaphragm, and the diaphragm is arranged on one side, used for imaging, of the display chip. And a through hole is formed in the center of the diaphragm, and light rays from the imaging area of the display chip are transmitted through the through hole and projected to the outside to form a projection. The part of the diaphragm outside the through hole blocks light from the display chip outside the imaging area to pass through, so that the projection range is limited, the gray edge outside the imaging area and stray light in the projection lens cone are effectively removed, the contrast is improved, the definition of projection imaging is improved, and the display effect is improved.
Of course, it is not necessary for any product to achieve all of the above-described advantages at the same time for the practice of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of an optical engine according to an embodiment of the present application (no diaphragm is shown);
fig. 2 is a schematic layout diagram of a display chip and a stop of an optical machine according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
As shown in fig. 1 and fig. 2, an embodiment of the first aspect of the present application provides an optical engine, which includes a light source generator 1, a display chip 2, and a diaphragm 3. Wherein the light source generator 1 is adapted to emit a light beam. The display chip 2 is used for imaging. The diaphragm 3 is arranged on one side of the display chip 2 for imaging, a through hole 301 is arranged in the center of the diaphragm 3, the through hole 301 is used for allowing the light 4 from the imaging area 201 of the display chip 2 to pass through, and the part of the diaphragm 3 outside the through hole 301 is used for blocking the light 4 from the display chip 2 outside the imaging area 201.
The optical machine of the embodiment of the application comprises a light source generator 1 and a display chip 2, wherein the light source generator 1 is used for emitting light beams, and the display chip 2 is used for imaging. Compared with the related art, the optical machine of the embodiment of the application further comprises a diaphragm 3, and the diaphragm 3 is arranged on one side, used for imaging, of the display chip 2. A through hole 301 is provided at the center of the diaphragm 3, and the light 4 from within the imaging area 201 of the display chip 2 is passed through the through hole 301 and projected to the outside to form a projection. The part of the diaphragm 3, which is positioned outside the through hole 301, blocks the light 4 coming from the display chip 2 and outside the imaging area 201 from passing through, so that the projection range is limited, the gray edge outside the imaging area 201 and the stray light in the projection lens barrel are effectively removed, the contrast is improved, the definition of projection imaging is improved, and the display effect is improved.
In some embodiments of the present application, the diaphragm 3 is a plate-like structure, as shown in fig. 2. Therefore, the diaphragm 3 is simple in structure, convenient to manufacture and low in cost.
In some embodiments of the present application, the diaphragm 3 is a metal plate. In the embodiment of the present application, the diaphragm 3 is set as a metal plate, so that the portion of the diaphragm 3 located outside the through hole 301 effectively blocks the light 4 coming from the display chip 2 and outside the imaging area 201 from passing through, thereby effectively removing the gray edge outside the imaging area 201 and the stray light in the projection lens barrel, improving the contrast, further improving the definition of projection imaging, and improving the display effect.
In some embodiments of the present application, the diaphragm 3 has a thickness of 0.2mm to 0.4mm. In the embodiment of the application, the thickness of the diaphragm 3 is set to be 0.2mm-0.4mm, so that the influence of the diaphragm 3 on the light 4 passing through the through hole 301 can be reduced, and the definition of projection imaging can be improved.
In some embodiments of the present application, the distance between the diaphragm 3 and the display chip 2 is less than or equal to 0.2mm. In this application embodiment, through making the interval less than or equal to 0.2mm between diaphragm 3 and the display chip 2, can make the part that is located outside the through-hole 301 of diaphragm 3 block most from the light 4 that comes from outside the imaging region 201 of display chip 2 and pass through to can further get rid of the grey limit outside the imaging region 201 and the stray light in the projection lens cone, improve the contrast, and then improve the definition of projection formation of image, improve the display effect.
As shown in fig. 1, in some embodiments of the present application, the optical machine further comprises a first heat sink 5, the first heat sink 5 being used for dissipating heat of the light source generator 1. In the embodiment of the application, the light source generator 1 is cooled by arranging the first radiator 5, so that the light source generator 1 works in an ideal temperature range, the high-efficiency luminous efficiency is favorably realized, and the display effect is improved.
In some embodiments of the present application, the first heat sink 5 is a heat pipe heat sink. Therefore, the heat pipe radiator can transfer the heat generated by the light source generator 1 to one side far away from the light source generator 1, and the temperature of the light source generator 1 is effectively reduced. In addition, the heat conduction coefficient of the heat pipe radiator is far higher than that of a metal radiator, and the heat dissipation effect is better.
Specifically, the heat pipe radiator comprises a first heat exchange end and a second heat exchange end, a phase change medium capable of circularly flowing between the first heat exchange end and the second heat exchange end is arranged in the heat pipe radiator, and the first heat exchange end of the heat pipe radiator is connected with the light source generator 1. The first heat exchange end of the heat pipe radiator is a heat absorption end, and the second heat exchange end of the heat pipe radiator is a heat release end. The inside of heat pipe radiator is provided with the phase change medium, the phase change medium evaporates and vaporizes after absorbing the heat of light source generator 1 at the first heat transfer end of heat pipe radiator, steam flow direction heat pipe radiator's second heat transfer end is released heat and is condensed into liquid, the phase change medium after the condensation flows back to heat pipe radiator's first heat transfer end and continues to absorb heat, circulation through the phase change medium flows, thereby transmit the heat to heat pipe radiator's second heat transfer end by heat pipe radiator's first heat transfer end, effectively reduce the temperature of light source generator 1, make light source generator 1 work at the temperature range of ideal, thereby be favorable to realizing efficient luminous efficiency, improve display effect.
Further, a heat radiation fan 13 is provided at least on one side of the heat pipe radiator. In a specific embodiment, cooling fans 13 are respectively disposed at both sides of the heatpipe radiator. Through setting up radiator fan 13, strengthen the radiating effect, and then be favorable to realizing efficient luminous efficacy, improve the display effect.
As shown in fig. 1, in some embodiments of the present application, the optical engine further includes a second heat sink 6, and the second heat sink 6 is used for dissipating heat of the display chip 2. In the embodiment of the present application, the second heat sink 6 is disposed to enable the display chip 2 to work in an ideal temperature range, so as to improve color uniformity and optical reflection efficiency, thereby improving the display effect. Optionally, the second heat sink 6 is a metal heat sink.
In some embodiments of the present application, display chip 2 is an LCOS chip. LCOS (Liquid Crystal on Silicon), which is a Liquid Crystal On Silicon (LCOS) or Liquid Crystal On Silicon (LCOS), is a matrix Liquid Crystal display device based on a reflective mode. The ray 4 of the ray machine adopting the LCOS chip forms an image in a reflection mode instead of penetrating through the panel, so that the light utilization efficiency is higher, and the resolution ratio of the LCOS chip is higher. Compared with other display chips 2, the LCOS chip has the advantages of low cost and high brightness.
Further, as shown in fig. 1, the optical machine further includes a light combining module 7, a light shape adjusting module 8, an optical adjusting reflection module 9, a light uniformizing module 10, a polarization splitting module 11, and a lens module 12. The light combining module 7 is used for combining the light beams emitted by the light source generator 1 and forming light spots. The light shape adjusting module 8 is used for adjusting the shape of the light spot so that the shape of the light spot is matched with the display chip 2. The optical adjustment reflection module 9 is used for adjusting the energy density of the light spot so that the energy density of the light spot reaches a maximum value. The dodging module 10 is used for making the energy density distribution of the light spot uniform. The polarization splitting module 11 is configured to generate polarized light, and the polarized light is projected on the LCOS chip to generate a projection image on the LCOS chip. The lens module 12 is used to adjust the focal length, distortion, projection direction, size, etc. of the projected image. In the embodiment of the application, the optical machine is designed in a modularized mode, so that the assembly manufacturability and the assembly efficiency of the optical machine are improved.
Embodiments of a second aspect of the present application provide a projector including an optical machine according to any one of the above embodiments.
The projector of the embodiment of the application comprises an optical machine, wherein the optical machine comprises a light source generator 1 and a display chip 2, the light source generator 1 is used for emitting light beams, and the display chip 2 is used for imaging. Compared with the related art, the optical machine of the embodiment of the application further comprises a diaphragm 3, and the diaphragm 3 is arranged on one side, used for imaging, of the display chip 2. A through hole 301 is provided at the center of the diaphragm 3, and the light 4 from within the imaging area 201 of the display chip 2 is passed through the through hole 301 and projected to the outside to form a projection. The part of the diaphragm 3, which is positioned outside the through hole 301, blocks the light 4 from the display chip 2 outside the imaging area 201, so that the projection range is limited, the gray edge outside the imaging area 201 and the stray light in the projection lens barrel are effectively removed, the contrast is improved, the definition of projection imaging is improved, and the display effect is improved.
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. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above are merely preferred embodiments of the present application, and are not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the scope of protection of the present application.
Claims (10)
1. An optical bench, comprising:
a light source generator for emitting a light beam;
the display chip is used for imaging;
the diaphragm sets up the one side that is used for the formation of image of display chip, the center department of diaphragm is provided with the through-hole, the through-hole is used for supplying to come from the light in the formation of image region of display chip passes through, the diaphragm be located the part outside the through-hole is used for blockking and comes from the light outside the formation of image region of display chip passes through.
2. The optical bench of claim 1 wherein the diaphragm is a plate-like structure.
3. The optical bench of claim 2 wherein the diaphragm is a metal plate.
4. The optical bench of claim 2 wherein the stop has a thickness of 0.2mm to 0.4mm.
5. The optical bench of claim 1, wherein the distance between the diaphragm and the display chip is less than or equal to 0.2mm.
6. The optical bench of claim 1 further comprising a first heat sink for dissipating heat from the light source generator.
7. The optical bench of claim 6, wherein the first heat sink is a heat pipe heat sink.
8. The optical bench of claim 1, further comprising a second heat sink for dissipating heat from the display chip.
9. The optical bench of claim 1, wherein the display chip is an LCOS chip.
10. A projector comprising the light engine of any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220690967.7U CN217718410U (en) | 2022-03-28 | 2022-03-28 | Optical machine and projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220690967.7U CN217718410U (en) | 2022-03-28 | 2022-03-28 | Optical machine and projector |
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| Publication Number | Publication Date |
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| CN217718410U true CN217718410U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220690967.7U Active CN217718410U (en) | 2022-03-28 | 2022-03-28 | Optical machine and projector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117221500A (en) * | 2023-08-07 | 2023-12-12 | 宜宾市极米光电有限公司 | Projection apparatus and projection display method |
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- 2022-03-28 CN CN202220690967.7U patent/CN217718410U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117221500A (en) * | 2023-08-07 | 2023-12-12 | 宜宾市极米光电有限公司 | Projection apparatus and projection display method |
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