CN106154701B - Laser light source's dustproof system and laser display system - Google Patents
Laser light source's dustproof system and laser display system Download PDFInfo
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- CN106154701B CN106154701B CN201510137804.0A CN201510137804A CN106154701B CN 106154701 B CN106154701 B CN 106154701B CN 201510137804 A CN201510137804 A CN 201510137804A CN 106154701 B CN106154701 B CN 106154701B
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Abstract
The invention provides a dust prevention system of a laser light source and a laser display system, which solve the technical problem of dust deposition on an optical lens in the laser light source. The dustproof system comprises an optical lens, a dustproof channel, an ion emitter and a fan; the optical lens, the ion emitter and the fan are arranged in the dustproof channel; and the ion emitter is disposed between the optical lens and the fan. The ion emitter generates charged ions in the dustproof channel, the fan drives the air with the charged particles to flow in the dustproof channel, when flowing air flows through the optical lens, dust deposited on the optical lens is blown up and taken away, and meanwhile, the charged particles neutralize the dust to enable the optical lens to be free from electrostatic influence and adsorb the dust, so that the dust is not deposited on the optical lens, the penetration rate of the optical lens is not reduced, and the brightness of the laser display system is ensured.
Description
Technical Field
The invention relates to the technical field of laser display, in particular to a dust prevention system of a laser light source and a laser display system.
Background
The laser light source in the laser display system, as shown in fig. 1, includes a laser 9, an optical lens 2 and a wavelength conversion device 10; an excitation light source emitted by the laser 9 penetrates through the optical lens 2, is collected into a small beam by the optical lens 2, and irradiates on the fluorescent material of the wavelength conversion device 10 to excite the fluorescent material to emit fluorescent light with a wavelength different from that of the excitation light source, so that tricolor light required in the laser display system is generated.
The optical lens 2 is used for converging an excitation light source emitted by a laser 9; the higher the transmittance, the more the amount of excitation light source passing through the optical lens, and the higher the brightness of the laser display system. Because the laser display system has a power-on device, static electricity is easily generated on the optical lens 2, and the static electricity can adsorb fine particles such as dust and the like; when dust is deposited on the optical lens 2, the transmittance of the optical lens 2 is reduced by the dust, and thus the amount of the excitation light source penetrating the optical lens 2 is reduced, so that the brightness of the entire laser display system is reduced.
To avoid the above problem, as shown in fig. 1, a light source housing 8 is generally used, in which the laser 9 and the optical lens 2 are sealed to prevent the entry of dust. However, although the whole laser light source is sealed in the light source housing 8, the sealing is not absolute, and especially when the temperature in the closed environment rises due to the heat generated by the laser 9, a pressure difference is generated between the inside and the outside of the light source housing to cause air flow, and the flowing air can carry fine dust into the light source housing 8 and be adsorbed by the static electricity on the optical lens 2 to be deposited on the optical lens 2, so that the penetration rate of the optical lens is reduced.
Disclosure of Invention
The embodiment of the application provides a laser light source's dustproof system and laser display system to solve the technical problem of the optical lens deposit dust among the laser light source.
In order to solve the above technical problem, the embodiment of the present application is implemented by using the following technical solutions:
the dustproof system of the laser light source comprises an optical lens, a dustproof channel, an ion emitter and a fan; the optical lens, the ion emitter and the fan are arranged in the dustproof channel; and the ion emitter is disposed between the optical lens and the fan.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following technical effects or advantages: the dustproof system of the laser light source provided by the embodiment of the application comprises a dustproof channel, an ion emitter and a fan; the optical lens, the ion emitter and the fan are all arranged in the dustproof channel; the ion emitter is arranged between the optical lens and the fan and emits charged ions; the fan runs to blow to the ion emitter, so that air in the dustproof channel flows, and the flowing air drives charged particles emitted by the ion emitter to flow to the optical lens together; when air with charged ions flows through the optical lens, dust deposited on the optical lens is blown and taken away, and simultaneously the charged ions in the air and the charges carried by the dust are neutralized, so that the optical lens is not influenced by static electricity to adsorb the dust; therefore, the technical problem of dust deposition on the optical lens in the laser light source is solved.
Drawings
FIG. 1 is a schematic view of a laser light source;
fig. 2 is an architecture diagram of a dust-proof system of a laser light source according to an embodiment of the present disclosure;
FIG. 3 is a block diagram of an enclosed dust-proof system of a laser light source according to an embodiment of the present disclosure;
fig. 4 is an architecture diagram of a dust-proof system of a laser light source according to an embodiment of the present disclosure;
fig. 5 is an architecture diagram of a dust-proof system of a laser light source according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a wavelength conversion device.
Detailed Description
The embodiment of the application provides a dust prevention system of a laser light source and a laser display system, so as to solve the technical problem that dust is deposited on an optical lens in the laser light source; the optical lens in the laser light source is placed in the dustproof channel, flowing air flow with charged ions is generated in the dustproof channel, when the flowing air flow flows through the optical lens, dust deposited on the optical lens is blown up and taken away, and meanwhile, the charged particles neutralize charges on the dust to enable the optical lens not to be influenced by static electricity to adsorb the dust, so that the dust is not deposited on the optical lens.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and specific embodiments.
As shown in fig. 2, the structure of the dust-proof system of the laser light source proposed in the embodiment of the present application includes an optical lens 2, a dust-proof channel 4, an ion emitter 5, and a fan 6; the optical lens 2, the ion emitter 5 and the fan 6 are all arranged in the dustproof channel 4; and the ion emitter 5 is placed between the optical lens 2 and the fan 6.
The ion emitter 5 functions to emit charged ions so that the air in the dust-proof passage 4 is filled with the charged ions. The fan 6 is operated toward the ion emitter 5, so that the air in the dustproof passage 4 flows toward the optical lens 2, and the flowing air drives the charged particles generated by the ion reflector 5 to flow together.
When the flowing air flows through the optical lens 2, dust deposited on the optical lens 2 is blown up and carried away; meanwhile, the charged particles neutralize the charges in the dust, so that the dust on the optical lens 2 is not influenced by static electricity and is adsorbed on the optical lens, and the dust adsorbed on the optical lens 2 is further released and is taken away by flowing air; therefore, the technical problem of dust deposition on the optical lens in the laser light source is solved; dust is not deposited on the optical lens 2, so that the penetration rate of the optical lens 2 is not reduced, the excitation light source can penetrate through the optical lens 2 to the maximum extent, and the brightness of the whole laser display system is ensured not to be reduced.
Preferably, the dust-proof passage 4 is an annular closed passage, as shown in fig. 3. When the fan 6 runs towards the optical lens 2, air is blown to circularly flow in the annular closed channel, charged ions are driven to flow together when the air flows through the ion reflector 5, the air with the charged ions blows up and takes away dust attached to the air when the air flows through the optical lens 2, the charged ions neutralize the charges in the dust, so that the dust is not influenced by static electricity and is adsorbed on the optical lens 2 again, the problem that the dust is deposited on the optical lens in the laser light source is solved, the optical lens can keep the highest penetration rate, and the brightness of the projection display system is ensured not to be reduced.
In the above solution, as shown in fig. 2 and 3, a dust filter 7 is disposed in the dust-proof passage 4; the dust filter 7 is used for filtering particles such as dust in the air. Dust particles are carried in the air as it flows through the optics lens 2 by the fan 6 to entrain dust. After the air carrying the dust particles passes through the dust filter 7, the dust particles are filtered and collected by the dust filter 7. Because this dust filter 7 is in laser display system, and the electrified device in the laser display system makes this dust filter 7 inevitable carry static yet, then because static influence, it adsorbs the dust that carries in the air more easily, plays the effect of filtering dust particle or other tiny particles, and static can further improve dust filter's filtration performance.
The dust filter 7, such as a filter screen, is preferably disposed between the ion emitter 5 and the fan 6, but the actual location is not limited thereto, and it may be disposed at any location in the dust-proof passage 4 that is advantageous for filtering dust, and is set according to the actual use condition. The dust filter 7 is not limited to a screen, and any filter device that can filter and collect dust may be used.
The dustproof system of the laser light source provided by the embodiment of the application comprises at least two optical lenses 2; the dust-proof channel comprises at least two dust-proof sub-channels 41, and each optical lens is arranged in one dust-proof sub-channel. As shown in fig. 4, two optical lenses 2 are included, and the dust-proof channel 4 includes two dust-proof sub-channels 41, and the two optical lenses are respectively disposed in one dust-proof sub-channel. The fan 6 blows the air in the dustproof channel 4 to the ion emitter 5, drives the charged particles to flow to the two dustproof sub-channels 41 together, and flows into the two dustproof sub-channels 41 respectively, blows and takes away the dust deposited on each optical lens 2, and neutralizes the charges on the dust, so that the dust is not influenced by static electricity and is adsorbed on the optical lens 2 again, thereby solving the problem of dust deposited on the optical lens in the laser light source, the optical lens can keep the most penetration rate, and the brightness of the projection display system is ensured not to be reduced.
As shown in fig. 5, the dust-proof system of the laser light source proposed in the embodiment of the present application further includes a light source housing 8 and a laser 9; the optical lens 2 and the laser 9 are enclosed in the light source housing 8 to form an enclosed laser light source, and the laser 9 is arranged on the light incident side of the optical lens 2. The light source housing 8 prevents dust from entering therein, and ensures that the optical lens 2 is not reduced in transmittance due to dust deposition as much as possible. However, even if the optical lens 2 and the laser 9 are enclosed in the light source housing 8, the sealing is not absolute, and especially when the laser 9 generates heat to raise the temperature in the enclosed environment, a pressure difference is generated inside and outside the light source housing 8 to cause air flow, and the flowing air can carry fine dust into the light source housing 8 and be adsorbed by static electricity on the optical lens 2 to be deposited on the optical lens 2, so that the penetration rate of the optical lens is reduced. When the dustproof system is applied to the closed laser light source, the connection position of the dustproof channel 4 and the light source shell 8 needs to be sealed, the dustproof channel 4 and the closed laser light source are ensured to be in the closed system, the fan 6 blows air to flow, charged ions generated by the ion generator 5 are driven to flow through the optical lenses 2 together, dust deposited on each optical lens 2 is blown up and taken away, charges on the dust are neutralized, the dust is not influenced by static electricity and is adsorbed on the optical lenses 2 again, the problem of dust deposited on the optical lenses in the closed laser light source is solved, the optical lenses can keep the optimal penetration rate, and the brightness of the projection display system cannot be reduced.
As shown in fig. 5, the dust-proof system of the laser light source according to the embodiment of the present application further includes a wavelength conversion device 10 disposed on the light-emitting side of the optical lens 2. The wavelength conversion device 10, as shown in fig. 6, includes a wavelength conversion layer 101, a fluorescent material 102 attached on the wavelength conversion layer, and a driving device 103 for driving the wavelength conversion layer to rotate; the driving device 103 is connected to the wavelength conversion layer 101 and is used for driving the wavelength conversion layer 101 to rotate periodically. The laser 9 generates an excitation light source to emit to the optical lens 2, and the excitation light source is converged into a small beam by the optical lens 2 to emit to the wavelength conversion device 10, and the fluorescent material 102 in the wavelength conversion device 10 is excited to emit fluorescent light with a wavelength different from that of the excitation light source, so that tricolor light of the laser display system is generated.
Based on the dustproof system of the laser light source, the embodiment of the application also provides a laser display system. The laser light source in the laser display system uses the dust-proof system of the laser light source. The dustproof system enables the optical lens in the laser light source to keep the optimal penetration rate and ensures that the brightness of the projection display system is not reduced.
In the dust-proof system of the laser light source and the laser display system provided by the embodiment of the application, the fan runs to blow to the ion emitter, so that air in the dust-proof channel flows, and the flowing air drives charged particles emitted by the ion emitter to flow to the optical lens together; when air with charged ions flows through the optical lens, dust deposited on the optical lens is blown and taken away, and simultaneously the charged ions in the air and the charges carried by the dust are neutralized, so that the optical lens is not influenced by static electricity to adsorb the dust; the air with dust is filtered and collected by the dust filter in the dust-proof channel, thereby solving the technical problem of dust deposition on the optical lens in the laser light source. The optical lens without dust deposition can keep the optimal penetration rate, and the excitation light source generated by the laser can penetrate through the optical lens as much as possible, so that the brightness of the laser display system is kept from being reduced, and the product quality of the laser display system is improved.
It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the spirit and scope of the present invention.
Claims (5)
1. Laser light source's dustproof system, including optical lens, characterized by, the system still includes: a dust-proof channel, an ion emitter and a fan; the optical lens, the ion emitter and the fan are arranged in the dustproof channel; and the ion emitter is disposed between the optical lens and the fan;
the dustproof channel is an annular closed channel;
the system further comprises a dust filter; the dust filter is arranged in the dust-proof channel;
the system further includes a light source housing; the optical lens is enclosed in the light source housing;
the system further comprises a laser; the laser is sealed in the light source shell and is arranged on the light inlet side of the optical lens;
the system further comprises a wavelength conversion device; the wavelength conversion device is arranged on the light emergent side of the optical lens.
2. The laser light source dust prevention system according to claim 1, wherein the system comprises at least two optical lenses; the dustproof channel comprises at least two dustproof sub-channels; each optical lens is arranged in one dustproof sub-channel.
3. The laser light source dust prevention system according to claim 1, wherein the dust filter is a screen.
4. The laser light source dust prevention system of claim 1, wherein the dust filter is disposed between the ion emitter and the fan.
5. Laser display system, characterized in that it comprises a dust-protection system of a closed laser light source according to any of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137804.0A CN106154701B (en) | 2015-03-27 | 2015-03-27 | Laser light source's dustproof system and laser display system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510137804.0A CN106154701B (en) | 2015-03-27 | 2015-03-27 | Laser light source's dustproof system and laser display system |
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| CN106154701A CN106154701A (en) | 2016-11-23 |
| CN106154701B true CN106154701B (en) | 2020-06-09 |
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| CN201510137804.0A Active CN106154701B (en) | 2015-03-27 | 2015-03-27 | Laser light source's dustproof system and laser display system |
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| CN110209004B (en) * | 2019-05-20 | 2021-02-09 | 郑州铁路职业技术学院 | Think political affairs education and use computer multimedia teaching device |
Citations (5)
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|---|---|---|---|---|
| JP2005106903A (en) * | 2003-09-29 | 2005-04-21 | Canon Inc | Dust removing device for projector |
| CN101546098A (en) * | 2008-03-28 | 2009-09-30 | 株式会社日立制作所 | Projection map display device |
| CN101726980A (en) * | 2008-10-30 | 2010-06-09 | 鸿富锦精密工业（深圳）有限公司 | Projector |
| CN103090320A (en) * | 2013-01-23 | 2013-05-08 | 海信集团有限公司 | Wavelength convertor, light source device and projector |
| CN204229107U (en) * | 2014-11-18 | 2015-03-25 | 海信集团有限公司 | A kind of projection display apparatus |
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2015
- 2015-03-27 CN CN201510137804.0A patent/CN106154701B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005106903A (en) * | 2003-09-29 | 2005-04-21 | Canon Inc | Dust removing device for projector |
| CN101546098A (en) * | 2008-03-28 | 2009-09-30 | 株式会社日立制作所 | Projection map display device |
| CN101726980A (en) * | 2008-10-30 | 2010-06-09 | 鸿富锦精密工业（深圳）有限公司 | Projector |
| CN103090320A (en) * | 2013-01-23 | 2013-05-08 | 海信集团有限公司 | Wavelength convertor, light source device and projector |
| CN204229107U (en) * | 2014-11-18 | 2015-03-25 | 海信集团有限公司 | A kind of projection display apparatus |
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Effective date of registration: 20200818 Address after: 266555 Qian WAN port road, Huangdao District, Qingdao, Shandong Province, No. 218 Patentee after: Qingdao Hisense Laser Display Co.,Ltd. Address before: 266100 No. 151, Zhuzhou Road, Qingdao, Shandong Patentee before: HISENSE Co.,Ltd. |