CN218497332U - Projection optical machine and projection equipment - Google Patents
Projection optical machine and projection equipment Download PDFInfo
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- CN218497332U CN218497332U CN202222369893.XU CN202222369893U CN218497332U CN 218497332 U CN218497332 U CN 218497332U CN 202222369893 U CN202222369893 U CN 202222369893U CN 218497332 U CN218497332 U CN 218497332U
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- air duct
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Abstract
The embodiment of the utility model provides a projection ray apparatus and projection equipment relates to projection ray apparatus heat dissipation field. The projection optical machine comprises a shell, a lens component, optical lenses, a display, a fan and a heat exchanger, wherein the shell is provided with an air channel, the lens component is arranged outside the air channel, the air channel is only sealed with the optical lenses and the display, the optical lenses are communicated with the air channel, the display is communicated with the air channel, the fan is arranged inside the air channel, air flow generated by the fan is used for dissipating heat of the optical lenses and the display through the air channel, the heat exchanger is partially arranged inside the air channel, the heat exchanger is used for dissipating heat of the air flow inside the air channel, and the air flow after heat dissipation flows to the fan. The projection optical machine is characterized in that under the condition of heat dissipation, air flow generated by the fan blows to the optical lenses and the display through the air duct to dissipate heat of the optical lenses and the display, the heat exchanger transfers heat carried by the air flow to the outside of the air duct to cool, and the cooled air flow flows back to the fan through the air duct to circulate.
Description
Technical Field
The utility model relates to a projection ray apparatus heat dissipation field particularly, relates to a projection ray apparatus and projection equipment.
Background
Projection displays are now widely used for near-eye displays, and projectors are generally classified into home projection, commercial projection, and the like. Currently available projection technologies include DLP, LCOS, LCD, and LBS. In the LCD projection technology, most of the light energy is converted into heat energy due to low light transmittance. In order to ensure the performance and reliability of the LCD, heat dissipation measures are required to be taken to control the temperature within a reasonable range.
The projection light machine in the prior art can generate a lot of heat in the using process, and the heat is generally radiated by adopting an air cooling mode. The heat dissipation mode among the prior art exists and leads to the dust to get into the ray apparatus easily to influence the luminance of ray apparatus, and then influence the problem of the performance of ray apparatus.
SUMMERY OF THE UTILITY MODEL
The utility model provides a projection ray apparatus and projection equipment, it can alleviate the problem that the dust got into the ray apparatus in the heat dissipation process, avoids influencing the luminance of ray apparatus, ensures the performance of ray apparatus.
The embodiment of the utility model discloses a can realize like this:
the embodiment of the utility model provides a projection ray apparatus, it includes:
the shell is provided with an air duct;
the lens assembly is arranged outside the air duct;
an optical lens in communication with the air duct;
a display in communication with the air duct;
the fan is arranged inside the air duct, and the airflow generated by the fan is used for dissipating heat of the optical lens and the display through the air duct;
the heat exchanger is partially arranged inside the air duct and used for dissipating heat of air flow inside the air duct, and the dissipated air flow flows to the fan.
Optionally, the housing includes a top plate, a side wall plate, and a bottom plate, the top edge of the side wall plate is connected to the top plate, the bottom edge of the side wall plate is connected to the bottom plate, and the top plate, the side wall plate, and the bottom plate together form the air duct.
Optionally, the housing is in a shape of a Chinese character 'ao', and the optical lens and the display are both disposed at a notch of the housing to communicate with the air duct.
Optionally, the heat exchanger is disposed adjacent to a side of the housing on which the optical lens is disposed.
Optionally, the fan is disposed on an opposite side of the housing from the side on which the heat exchanger is disposed.
Optionally, the heat exchanger has a heat absorption end and a heat release end, the heat absorption end of the heat exchanger is disposed inside the air duct, the heat release end is disposed outside the air duct, the heat absorption end of the heat exchanger is configured to transfer heat circulating inside the air duct to the heat release end to dissipate heat of the air flow inside the air duct, and the dissipated air flow flows to the air inlet of the fan.
Optionally, the air duct is provided with an inlet and an outlet, the inlet is used for inputting cooling liquid or cooling airflow into the air duct, and the outlet is used for discharging the cooling liquid or cooling airflow with heat.
Optionally, the projection optical engine further includes a heat-cold exchanger, and the heat-cold exchanger is disposed outside the air duct and connected to the air duct.
Optionally, the projection light engine further includes a pressure device, and the pressure device is disposed outside the air duct and connected to the air duct.
The embodiment of the utility model provides a projection equipment is still provided, include the projection ray apparatus.
The utility model discloses projection ray apparatus and projection equipment's beneficial effect includes, for example:
the projection optical machine comprises a shell, a lens component, an optical lens, a display, a fan and a heat exchanger, wherein the shell is provided with an air channel, the lens component is arranged outside the air channel, the optical lens is communicated with the air channel, the display is communicated with the air channel, the fan is arranged inside the air channel, air flow generated by the fan is used for dissipating heat of the optical lens and the display through the air channel, the heat exchanger is partially arranged inside the air channel, the heat exchanger is used for dissipating heat of the air flow inside the air channel, and the air flow after heat dissipation flows to the fan. The projection optical machine is arranged outside the air duct under the condition of heat dissipation, the lens assembly is arranged outside the air duct, the air duct only forms sealing with the optical lenses and the display, air flow generated by the fan blows heat of the optical lenses and the display away from the optical lenses and the display through the air duct, the heat of the optical lenses and the display can be dissipated, other lenses corresponding to the air duct can be dissipated, the dissipated air flows to the heat exchanger through the air duct, the heat exchanger transfers the heat carried by the air flow to the outside of the air duct, the air flow inside the air duct is cooled, and the cooled air flow flows back to the fan through the air duct to circulate. This projection ray apparatus adopts closed radiating mode to dispel the heat to optical lens and display, can alleviate the problem that the dust got into the ray apparatus in the heat dissipation process, avoids influencing the luminance of ray apparatus, ensures the performance of ray apparatus.
The projection equipment comprises a projection light machine. This projection ray apparatus is under radiating condition, the lens subassembly sets up in the outside in wind channel, the wind channel only forms sealedly with optical lens and display, the air current that the fan produced blows to optical lens and display through the wind channel and has taken away the heat of optical lens and display, not only can dispel the heat to optical lens and display, can also dispel the heat to all the other lenses corresponding with the wind channel position, wind after the heat dissipation flows to heat exchanger through the wind channel, heat transfer to the wind channel outside with the air current area is cooled down to the inside air current in wind channel, the air current after the cooling flows through the wind channel and gets back to the fan with this circulation. This projection ray apparatus adopts closed radiating mode to dispel the heat to optical lens and display, can alleviate the problem that the dust got into the ray apparatus in the heat dissipation process, avoids influencing the luminance of ray apparatus, ensures the performance of ray apparatus.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings which are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and it is also possible for those skilled in the art to obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a first viewing angle of a projection light engine according to an embodiment;
fig. 2 is a schematic structural diagram of a second viewing angle of a projection optical engine according to the embodiment;
fig. 3 is a schematic structural diagram of a third view angle of the projection optical engine according to the embodiment.
Icon: 10-a housing; 11-an air duct; 12-a top plate; 13-side coaming; 14-a base plate; 20-an optical lens; 30-a display; 40-a fan; 41-air inlet; 42-air outlet; 50-a heat exchanger; 51-a heat sink end; 511-gas inlet; 512-air outlet; 52-heat release end; 100-projection light machine.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are only used to distinguish one description from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Projection displays are now widely used for near-eye displays, and projectors are generally classified into home projection, commercial projection, and the like. Currently available projection technologies include DLP, LCOS, LCD, and LBS. In the LCD projection technology, most of the light energy is converted into heat energy due to low light transmittance. In order to ensure the performance and reliability of the LCD, heat dissipation measures are required to be taken at the LCD to control the temperature within a reasonable range.
The related art projection light engine generates a lot of heat during use, and generally adopts an air cooling mode to dissipate the heat. The heat dissipation mode among the prior art has and leads to the dust to get into the ray apparatus easily to influence the luminance of ray apparatus, and then influence the problem of the performance of ray apparatus.
Referring to fig. 1-3, the present embodiment provides a projection apparatus, which includes a light projector 100. This projection equipment can effectively improve above-mentioned technical problem, can alleviate the problem that the dust got into the ray apparatus in the heat dissipation process, avoids influencing the luminance of ray apparatus, ensures the performance of ray apparatus.
Referring to fig. 1 and 2, the projection optical machine 100 includes a housing 10, a lens assembly, an optical lens 20, a display 30, a fan 40, and a heat exchanger 50, where the housing 10 is provided with an air duct 11, the lens assembly is disposed outside the air duct 11, the optical lens 20 is communicated with the air duct 11, the display 30 is communicated with the air duct 11, the fan 40 is disposed inside the air duct 11, an air flow generated by the fan 40 is used for dissipating heat of the optical lens 20 and the display 30 through the air duct 11, the heat exchanger 50 is partially disposed inside the air duct 11, the heat exchanger 50 is used for dissipating heat of the air flow inside the air duct 11, and the dissipated air flow flows to the fan 40.
In particular, since the LCD used in the LCD projection system of the prior art is a transmissive optical path system, heat dissipation cannot be performed by heat conduction in the backlight optical path. The system needs to adopt an air cooling mode to carry out heat convection and heat dissipation on the LCD. In the air-cooled heat dissipation mode, the dustproof performance is the biggest bottleneck affecting the brightness of the system. The heat dissipation mode among the prior art has and leads to the dust to get into the ray apparatus easily to influence the luminance of ray apparatus, and then influence the problem of the performance of ray apparatus. In order to solve the technical problem, in the case of heat dissipation, in the projection optical engine 100 provided in this embodiment, the wind generated by the fan 40 is blown to the optical lens 20 and the display 30 through the air duct 11, the wind blown out of the optical lens 20 and the display 30 takes away heat of the optical lens 20 and the display 30, so that not only the optical lens 20 and the display 30 can be dissipated, but also the rest of the lenses corresponding to the position of the air duct 11 can be dissipated, the wind after heat dissipation flows to the heat exchanger 50 through the air duct 11, the heat exchanger 50 transfers the heat carried by the air flow to the outside of the air duct 11, the air flow inside the air duct 11 is cooled, and the air flow after cooling flows back to the fan 40 through the air duct 11 to circulate. This projection optical machine 100 adopts closed radiating mode to dispel the heat to optical lens 20 and display 30, can alleviate the problem that the dust got into the ray apparatus in the heat dissipation process, avoids influencing the luminance of ray apparatus, ensures the performance of ray apparatus.
In the present embodiment, the optical lens 20 and the display 30 are disposed at the same position in the wind tunnel 11.
The lens assembly includes a lens and a reflector, both of which are disposed outside the air duct 11.
The heat exchanger 50 has a heat absorbing end 51 and a heat releasing end 52, the heat absorbing end 51 of the heat exchanger 50 is disposed inside the air duct 11, the heat releasing end 52 is disposed outside the air duct 11, the heat absorbing end 51 of the heat exchanger 50 is used for transferring heat circulating inside the air duct 11 to the heat releasing end 52 to dissipate heat of air flow inside the air duct 11, the dissipated air flow flows to the air inlet 41 of the fan 40, and the air outlet 42 of the fan 40 is disposed toward the optical lens 20 and the display 30.
Referring to fig. 3, in the present embodiment, the housing 10 includes a top plate 12, side panels 13 and a bottom plate 14, wherein the top edges of the side panels 13 are connected to the top plate 12, the bottom edges of the side panels 13 are connected to the bottom plate 14, and the top plate 12, the side panels 13 and the bottom plate 14 together form the air duct 11.
Referring to fig. 1-3, in order to achieve the enclosed heat dissipation, the housing 10 is shaped like a Chinese character 'ao', and the optical lens 20 and the display 30 are disposed at the notch of the housing 10 to communicate with the air duct.
Specifically, the heat exchanger 50 is disposed at an adjacent side to the side of the housing 10 where the optical lens 20 is disposed.
More, the fan 40 is disposed at an opposite side of the case 10 to the side where the heat exchanger 50 is disposed.
It should be noted that the air generated by the fan 40 is sucked back to the fan 40 through the optical lens 20, the display 30 and the heat exchanger 50, so as to complete the heat dissipation of the optical engine in a cycle. The fan 40 is used for internal circulation to provide cooling air flow for the optical lens 20 and the display 30, and the heat exchanger 50 is used for external circulation to carry out heat removal in the air duct 11.
It should be noted that the heat absorbing end 51 of the heat exchanger 50 is provided with an air inlet 511 and an air outlet 512, the air inlet 511 faces the optical lens 20 and the display 30, and the air outlet 512 faces the air inlet 41 of the fan 40.
It should be noted that, the orientation mentioned in this embodiment may be a direct orientation or an indirect orientation, and is not limited in detail herein.
It can be understood that the wind carrying away the heat of the optical lens 20 and the display 30 enters the heat exchanger 50 through the air inlet 511, the heat of the wind can be discharged through the heat releasing end 52 of the heat exchanger 50 to achieve cooling, and the cooled wind is discharged back to the fan 40 through the air outlet 512.
In addition, the air duct 11 is provided with an inlet and an outlet, so that cooling liquid or cooling air flow can be introduced into the air duct 11 through the inlet, and the cooling liquid or cooling air flow with heat can be discharged out of the air duct 11 through the outlet.
In this embodiment, the projection light engine 100 further includes a heat-cold exchanger, the heat-cold exchanger is disposed outside the air duct 11, and the heat-cold exchanger is connected to the air duct 11.
Specifically, the heat-cold exchanger is connected to two pipes, which are a liquid inlet pipe and a liquid outlet pipe, respectively, the liquid inlet pipe is communicated with the inlet of the air duct 11, and the liquid outlet pipe is communicated with the outlet of the air duct 11.
More, the optical projection engine 100 further includes a pressure device, the pressure device is disposed outside the air duct 11 and connected to the air duct 11, and the pressure device can input the cooling liquid into the air duct 11.
Specifically, the pressure gauge is arranged in the liquid inlet pipe, and is used for pumping cooling liquid into the air duct 11 through the liquid inlet pipe, and the cooling liquid enters the liquid outlet pipe through the outlet of the air duct 11 after the cooling liquid flows inside the air duct 11, and reaches the heat-cold exchanger for heat-cold exchange treatment.
In this embodiment, the press is a water pump.
The working principle of the optical projection engine 100 according to the embodiment is as follows:
the fan 40 is started, wind generated by the fan 40 reaches the optical lens 20 and the display 30 along the air duct 11, the wind can carry away heat of the optical lens 20 and the display 30 to dissipate heat of the optical lens 20 and the display 30, then reaches the heat exchanger 50 through the optical lens 20 and the display 30, the wind carrying away heat of the optical lens 20 and the display 30 enters the heat exchanger 50 through the air inlet 511, the wind with heat transfers the heat to the heat dissipating end 52 through the heat absorbing end 51 of the heat exchanger 50, the heat dissipating end 52 exchanges heat with the outside to achieve internal circulation cooling, and the cooled wind returns to the fan 40 along the air duct 11 through the air outlet 512 to continue the next circulation heat dissipating operation.
The optical projector 100 and the projection apparatus provided in this embodiment have at least the following advantages:
because the LCD used in the LCD projection system in the prior art is a transmissive optical path system, heat dissipation cannot be performed by heat conduction in the backlight optical path. The system needs to adopt an air cooling mode to carry out heat convection and heat dissipation on the LCD. In the air-cooled heat dissipation mode, the dustproof performance is the biggest bottleneck affecting the brightness of the system. The heat dissipation mode among the prior art exists and leads to the dust to get into the ray apparatus easily to influence the luminance of ray apparatus, and then influence the problem of the performance of ray apparatus. In order to solve the technical problem, in the case of heat dissipation, in the projection optical engine 100 provided in this embodiment, the wind generated by the fan 40 is blown to the optical lens 20 and the display 30 through the air duct 11, the wind blown out of the optical lens 20 and the display 30 takes away heat of the optical lens 20 and the display 30, so that not only the optical lens 20 and the display 30 can be dissipated, but also the rest of the lenses corresponding to the position of the air duct 11 can be dissipated, the wind after heat dissipation flows to the heat exchanger 50 through the air duct 11, the heat exchanger 50 transfers the heat carried by the air flow to the outside of the air duct 11, the air flow inside the air duct 11 is cooled, and the air flow after cooling flows back to the fan 40 through the air duct 11 to circulate. This projection optical machine 100 adopts closed radiating mode to dispel the heat to optical lens 20 and display 30, can alleviate the problem that the dust got into the ray apparatus in the heat dissipation process, avoids influencing the luminance of ray apparatus, ensures the performance of ray apparatus.
The optical projection engine 100 utilizes the fan 40 to perform internal circulation and the heat exchanger 50 to perform external circulation to commonly dissipate heat of the optical lens 20 and the display 30, and the heat dissipation effect is good. And the inner loop heat dissipation mode that fan 40 formed has avoided the dust to get into the ray apparatus, has solved dustproof problem.
The projection light engine 100 has relatively independent heat dissipation, reducing dependency on the light engine.
To sum up, the embodiment of the utility model provides a projection ray apparatus 100 and projection equipment, this projection ray apparatus 100 includes shell 10, the lens subassembly, optical lens piece 20, display 30, fan 40 and heat exchanger 50, shell 10 is equipped with wind channel 11, the lens subassembly sets up in the outside of wind channel 11, optical lens piece 20 sets up in wind channel 11, display 30 sets up in wind channel 11, fan 40 sets up in wind channel 11, the air current that fan 40 produced is used for dispelling the heat to optical lens piece 20 and display 30 via wind channel 11, heat exchanger 50 part sets up in the inside in wind channel 11, heat exchanger 50 is used for dispelling the heat to the inside air current in wind channel 11, the air current after the heat dissipation flows to fan 40. In the case of heat dissipation of the projection light engine 100, the lens assembly is disposed outside the air duct 11, the air duct 11 only forms a seal with the optical lens 20 and the display 30, the air generated by the fan 40 is blown to the optical lens 20 and the display 30 through the air duct 11, the heat of the optical lens 20 and the display 30 is taken away by the air blown out of the optical lens 20 and the display 30, the heat of the optical lens 20 and the display 30 can be dissipated, not only can the optical lens 20 and the display 30 be dissipated, but also the rest of the lenses corresponding to the position of the air duct 11 can be dissipated, the dissipated air flows to the heat exchanger 50 through the air duct 11, the heat carried by the air flow is transferred to the outside of the air duct 11 by the heat exchanger 50, the air flow inside the air duct 11 is cooled, and the cooled air flow flows back to the fan 40 through the air duct 11 to circulate. This projection optical machine 100 adopts closed radiating mode to dispel the heat to optical lens 20 and display 30, can alleviate the problem that the dust got into the ray apparatus in the heat dissipation process, avoids influencing the luminance of ray apparatus, ensures the performance of ray apparatus.
The projection device includes a light engine 100. In the case of heat dissipation of the projection light engine 100, the lens assembly is disposed outside the air duct 11, the air duct 11 only forms a seal with the optical lens 20 and the display 30, the air generated by the fan 40 is blown to the optical lens 20 and the display 30 through the air duct 11, the heat of the optical lens 20 and the display 30 is taken away by the air blown out of the optical lens 20 and the display 30, the heat of the optical lens 20 and the display 30 can be dissipated, not only can the optical lens 20 and the display 30 be dissipated, but also the rest of the lenses corresponding to the position of the air duct 11 can be dissipated, the dissipated air flows to the heat exchanger 50 through the air duct 11, the heat carried by the air flow is transferred to the outside of the air duct 11 by the heat exchanger 50, the air flow inside the air duct 11 is cooled, and the cooled air flow flows back to the fan 40 through the air duct 11 to circulate. This projection optical machine 100 adopts closed radiating mode to dispel the heat to optical lens 20 and display 30, can alleviate the problem that the dust got into the ray apparatus in the heat dissipation process, avoids influencing the luminance of ray apparatus, ensures the performance of ray apparatus.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A projection light engine, comprising:
the air conditioner comprises a shell (10), wherein the shell (10) is provided with an air duct (11);
the lens assembly is arranged outside the air duct;
an optical lens (20), the optical lens (20) being in communication with the air duct (11);
a display (30), the display (30) in communication with the air duct (11);
a fan (40), wherein the fan (40) is arranged inside the air duct (11), and the air flow generated by the fan (40) is used for dissipating heat of the optical lens (20) and the display (30) through the air duct (11);
the heat exchanger (50) is partially arranged inside the air duct (11), the heat exchanger (50) is used for dissipating heat of air flow inside the air duct (11), and the dissipated air flow flows to the fan (40).
2. The light projector of claim 1, wherein the housing (10) comprises a top plate (12), a side wall (13) and a bottom plate (14), wherein a top edge of the side wall (13) is connected to the top plate (12), a bottom edge of the side wall (13) is connected to the bottom plate (14), and the top plate (12), the side wall (13) and the bottom plate (14) together form the air duct (11).
3. The optical projection engine according to claim 1, wherein the housing (10) is in a shape of Chinese character 'ao', and the optical lens (20) and the display (30) are disposed at a gap of the housing (10) to communicate with the air duct (11).
4. The projection light machine according to claim 3, characterized in that the heat exchanger (50) is arranged adjacent to the side of the housing (10) on which the optical lens (20) is arranged.
5. The light projector as claimed in claim 4, characterized in that the fan (40) is arranged on the opposite side of the housing (10) on which the heat exchanger (50) is arranged.
6. The projection light engine according to claim 1, wherein the heat exchanger (50) has a heat absorbing end (51) and a heat dissipating end (52), the heat absorbing end (51) of the heat exchanger (50) is disposed inside the air duct (11), the heat dissipating end (52) is disposed outside the air duct (11), the heat absorbing end (51) of the heat exchanger (50) is configured to transfer heat circulating inside the air duct (11) to the heat dissipating end (52) to dissipate heat of the air flow inside the air duct (11), and the dissipated air flow flows to the air inlet (41) of the fan (40).
7. The projection light engine according to claim 1, wherein the air duct (11) is provided with an inlet for receiving cooling liquid or cooling air into the air duct (11) and an outlet for discharging the cooling liquid or cooling air with heat.
8. The optical projection engine according to claim 1, further comprising a heat-cold exchanger disposed outside the air duct (11) and connected to the air duct (11).
9. The optical projection engine according to claim 1, further comprising a pressure device disposed outside the air duct (11) and connected to the air duct (11).
10. A projection apparatus comprising the light engine of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222369893.XU CN218497332U (en) | 2022-09-06 | 2022-09-06 | Projection optical machine and projection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222369893.XU CN218497332U (en) | 2022-09-06 | 2022-09-06 | Projection optical machine and projection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218497332U true CN218497332U (en) | 2023-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222369893.XU Active CN218497332U (en) | 2022-09-06 | 2022-09-06 | Projection optical machine and projection equipment |
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| Country | Link |
|---|---|
| CN (1) | CN218497332U (en) |
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2022
- 2022-09-06 CN CN202222369893.XU patent/CN218497332U/en active Active
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Effective date of registration: 20230905 Address after: 644000 No. 2, section 4, west section of Changjiang North Road, Lingang Economic Development Zone, Yibin City, Sichuan Province Patentee after: Yibin Jimi photoelectric Co.,Ltd. Address before: No. 3, Floor 6, No. 98-1, Xinsheng Street, Xuyang Town, Rong County, Zigong City, Sichuan Province, 643100 Patentee before: Yu Tao |