CN113382217A - Laser television - Google Patents
Laser television Download PDFInfo
- Publication number
- CN113382217A CN113382217A CN202010117226.5A CN202010117226A CN113382217A CN 113382217 A CN113382217 A CN 113382217A CN 202010117226 A CN202010117226 A CN 202010117226A CN 113382217 A CN113382217 A CN 113382217A
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- Prior art keywords
- temperature
- semiconductor refrigerator
- fluorescent powder
- motor
- current
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000004065 semiconductor Substances 0.000 claims abstract description 84
- 239000000843 powder Substances 0.000 claims abstract description 43
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 35
- 238000005057 refrigeration Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 101100208381 Caenorhabditis elegans tth-1 gene Proteins 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3144—Cooling systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3161—Modulator illumination systems using laser light sources
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a laser television, which comprises a color wheel, a motor, a semiconductor refrigerator and a driving circuit thereof, wherein the semiconductor refrigerator is arranged on a motor shaft, the semiconductor refrigerator is controlled to work by the semiconductor refrigerator driving circuit, when the temperature of the motor during starting is lower than a first threshold temperature, the semiconductor refrigerator driving circuit outputs a first current to drive the semiconductor refrigerator, so that the semiconductor refrigerator heats the motor shaft, the heat is transferred to the motor from the motor shaft, and the temperature of the motor is raised until the temperature reaches the first threshold temperature, thereby ensuring that the motor can be normally started at a low temperature; after the color wheel is started, the irradiation temperature of the fluorescent powder is increased by the laser source, the semiconductor refrigerator driving circuit outputs a second current opposite to the current direction of the first current to drive the semiconductor refrigerator, the semiconductor refrigerator refrigerates the motor shaft, and cold energy is transmitted to the color wheel from the motor shaft to cool the fluorescent powder, so that the temperature of the fluorescent powder is not higher than a second threshold temperature, and the fluorescent powder is prevented from being burnt due to high temperature.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a laser television.
Background
The light source of the monochromatic laser television adopts blue laser to generate three primary colors by matching with a fluorescent wheel and a color filtering wheel; the blue laser excites the fluorescent powder on the fluorescent wheel to generate light with various broad-spectrum primary colors, and the three primary colors with the final required wavelength are formed through the color filtering wheel.
In the light source of the laser television, the color wheel structure is composed of the following parts: the motor, the metal substrate, the fluorescent powder and other auxiliary materials; as shown in fig. 1, the phosphor is pasted onto an annular metal substrate 11, the metal substrate 11 is mounted onto a motor shaft 12, and the motor shaft 12 is fixed to the light source housing by screws; based on this connection structure, the temperature of phosphor powder can be transmitted to the light source shell and dispel the heat.
Because the laser energy density is high, the temperature of a laser focusing point can burn the fluorescent powder in a short time, and therefore the color wheel needs to rotate continuously, so that the laser can be uniformly irradiated on the whole fluorescent wheel, the heat is uniformly spread, and the fluorescent powder is prevented from being burnt due to high temperature; the excitation efficiency of the phosphor is also related to the temperature of the phosphor, such as a fitting curve of the relationship between the excitation efficiency of the phosphor and the temperature shown in fig. 2, the excitation efficiency of the phosphor decreases with the increase of the temperature, and the excitation efficiency decreases sharply when the temperature exceeds t 0; however, the heat dissipation of the existing fan is limited by the influence of the ambient temperature, and the heat dissipation effect is poor when the ambient temperature is high; on the other hand, when the temperature is too high, the motor is also at risk of burning; when the temperature is too low, the motor has the risk of being unable to start at low temperature due to the characteristics of internal bearings, lubricating oil and the like; therefore, in the light source of the laser television, there are limitations of high-temperature use conditions and low-temperature use conditions.
Disclosure of Invention
The invention aims to provide a laser television, wherein a semiconductor refrigerating device is used at a motor shaft of a color wheel, and the control of refrigeration and heating is realized by controlling the current direction output to the semiconductor refrigerating device by a driving circuit of the semiconductor refrigerating device, so that the normal starting of a motor at low temperature and the cooling of fluorescent powder at high temperature can be realized.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a laser television, comprising: a color wheel with phosphor attached thereon; the motor is used for driving the color wheel to rotate, and the color wheel is arranged on a motor shaft; further comprising: the semiconductor refrigerator is fixed with the motor shaft; the semiconductor refrigerator driving circuit is used for outputting a first current to drive the semiconductor refrigerator so that the temperature of the motor is higher than a first threshold temperature; outputting a second current to drive the semiconductor refrigerator so that the temperature of the fluorescent powder is not higher than a second threshold temperature; wherein the first current and the second current have current directions opposite to each other.
Compared with the prior art, the technical scheme of the invention has the following technical effects: the laser television comprises a motor shaft of a color wheel, a semiconductor refrigerator, a semiconductor refrigeration driving circuit, a semiconductor refrigerator driving circuit, a motor shaft of the color wheel, a motor temperature control circuit and a power supply circuit, wherein the semiconductor refrigerator is arranged on the motor shaft of the color wheel, the semiconductor refrigeration driving circuit controls the work of the semiconductor refrigerator, when the motor temperature during starting is lower than a first threshold temperature, the semiconductor refrigerator driving circuit outputs a first current to drive the semiconductor refrigerator, so that the semiconductor refrigerator heats the motor shaft, the heat is transferred to the motor from the motor shaft, the temperature of the motor is raised until the first threshold temperature is reached, and the normal starting of the motor at low temperature is ensured; after the color wheel is started, the irradiation temperature of the fluorescent powder is increased by the laser source, the semiconductor refrigerator driving circuit outputs a second current opposite to the first current in direction to drive the semiconductor refrigerator, so that the semiconductor refrigerator refrigerates the motor shaft, cold energy is transmitted to the color wheel from the motor shaft to cool the fluorescent powder, the temperature of the fluorescent powder is not higher than a second threshold temperature, and the fluorescent powder is prevented from being burnt due to high temperature.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a color wheel of a laser television in the prior art;
FIG. 2 is a fitting graph of the relationship between the excitation efficiency of the phosphor and the temperature of the phosphor;
FIG. 3 is a schematic structural diagram of a color wheel in a laser television according to the present invention;
FIG. 4 is a schematic diagram of the operation of the semiconductor refrigerator of the present invention;
fig. 5 is a functional architecture diagram of a laser television according to a first embodiment of the present invention;
FIG. 6 is a schematic diagram of the working relationship of the color wheel, the semiconductor cooler and the driving circuit thereof according to the first embodiment of the present invention;
fig. 7 is a functional architecture diagram of a laser television according to a second embodiment of the present invention;
FIG. 8 is a schematic diagram of the working relationship of the color wheel, the semiconductor refrigerator and the driving circuit thereof according to the second embodiment of the present invention;
FIG. 9 is a schematic view of the semiconductor cooler according to the second embodiment of the present invention;
fig. 10 is a functional architecture diagram of a laser television according to a third embodiment of the present invention.
Detailed Description
The technical solution in 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.
The laser television provided by the invention comprises a color wheel 1 and a motor for driving the color wheel 1 to rotate, wherein the color wheel 1 is arranged on an output shaft of the motor, namely a motor shaft 12, the color wheel 1 comprises a metal substrate 11, and fluorescent powder is attached to the metal substrate; the refrigerator also comprises a semiconductor refrigerator (TEC) 3 and a semiconductor refrigerator driving circuit, wherein the semiconductor refrigerator 3 is fixed on the motor shaft 12; the semiconductor refrigerator driving circuit is used for outputting a first current I1 to drive the semiconductor refrigerator 3 so that the temperature of the motor is higher than a first threshold temperature Tth 1; and outputting a second current I2 to drive the semiconductor refrigerator 3 so that the temperature of the phosphor is not higher than a second threshold temperature Tth 2; the first current I1 is here opposite to the second current I2.
By changing the direction of the current flowing through the semiconductor cooler 3, the semiconductor cooler device 3 can both cool and heat. In the embodiment of the invention, the cold end of the semiconductor refrigerator 3 is connected to the surface of the motor shaft 12, the hot end is connected with the radiator, when the first reverse current I1 is input to the semiconductor refrigerator 3, heat is transferred from the hot end to the cold end, so that the temperature of the motor shaft is raised, and when the second forward current I2 is input to the semiconductor refrigerator 3, heat is transferred from the cold end to the hot end, so that the temperature of the motor shaft is lowered.
As shown in fig. 4, when the PADRV signal and the NADRV signal are low and high signals, respectively, and the PBDRV signal and the NBDRV signal are high and low signals, respectively, PA and NA are turned on, PB and NB are turned off, and the current direction of the semiconductor refrigerator is from left to right, as shown by the solid arrows in the figure; when the PADRV signal and the NADRV signal are high and low signals, respectively, and the PBDRV signal and the NBDRV signal are low and high signals, respectively, PA and NA are turned off, PB and NB are turned on, and the direction of the current of the semiconductor refrigerator is from right to left, as indicated by the dashed arrows in the figure. Therefore, when the current for driving the semiconductor refrigerator is changed, the cold end and the hot end of the semiconductor refrigerator are mutually switched in direction, so that the fixed equipment can be cooled or heated.
In the application of the invention, for the low-temperature starting of the color wheel, a first threshold temperature Tth1 is set, a motor which is higher than the first threshold temperature Tth1 can be normally started, whether the color wheel is in a low-temperature starting state can be judged by detecting the temperature of the motor before the color wheel is started, if yes, a semiconductor refrigerator is started, a first current I1 is input to the semiconductor refrigerator to heat the semiconductor refrigerator, the temperature of the semiconductor refrigerator is raised to be higher than the first threshold temperature Tth1, and then the color wheel is started to operate, so that the normal starting of the color wheel at the low temperature is ensured.
After the color wheel is started, the fluorescent powder is irradiated by a laser source to be heated rapidly, the fluorescent powder cannot be burnt when the temperature of the fluorescent powder is lower than the second threshold temperature Tth2 by setting a second threshold temperature Tth2, the fluorescent powder has the risk of being burnt when the temperature of the fluorescent powder is higher than the second threshold temperature Tth2, the semiconductor refrigerating device is started, a second current I2 is input to the semiconductor refrigerating device to refrigerate the motor shaft, and the cold energy is transmitted to the annular metal substrate 11 through the motor shaft, so that the temperature of the fluorescent powder attached to the annular metal substrate is reduced, and the temperature of the fluorescent powder is maintained below the second threshold temperature Tth 2.
Preferably, referring to fig. 2, the second threshold temperature Tth2 is set as a critical temperature t0 when the excitation efficiency of the phosphor decreases rapidly, so that the phosphor can be prevented from being burnt and the phosphor can have a better excitation efficiency;
the following describes in detail the temperature control scheme of the color wheel of the laser television according to several embodiments.
Example one
As shown in fig. 5 and 6, in the present embodiment, a first temperature sensor 21 for detecting the temperature of the motor shaft is mounted on the motor shaft 12 of the color wheel 1, and both end surfaces of the semiconductor refrigerator 3 are coated with a thermal conductive paste to achieve good thermal conductivity. The first temperature sensor 21 is a contact sensor, such as a thermistor, a thermocouple, etc., and for example, a negative temperature coefficient thermistor NTC, the NTC is a probe fixed on the surface of the motor shaft and a lead wire is used, and the lead wire can be externally connected to the power-on start module 5. The first temperature sensor 21 is installed as close to the motor as possible and avoids rotating-type components such as a nearby housing portion, the inside of a motor shaft, and the like, to make the detected temperature as close to the motor temperature as possible.
And a power-on starting module 5, configured to start the first temperature sensor 21 to detect a temperature at the motor when the laser television is powered on, start the semiconductor refrigerator 3 when the temperature of the motor is lower than a first threshold temperature Tth1, and control the semiconductor refrigerator driving circuit 4 to output a first current I1 to heat an end of the motor opposite to the motor shaft, where heat is transferred from the end to an end in contact with the motor shaft to heat the motor shaft, so as to heat the motor shaft, and when the temperature of the motor detected by the first temperature sensor 21 is higher than the first threshold temperature Tth1, send a start instruction to a driving circuit (not shown in the figure) of the color wheel, start the color wheel and normally start the display system, and turn off the semiconductor refrigerator 3 to stop heating the motor shaft.
The semiconductor refrigerator drive circuit 4 can be heated with maximum power to bring the motor to the starting temperature as quickly as possible.
Example two
In this embodiment, on the basis of the technical means of cooling the motor shaft by the semiconductor refrigerator to cool the phosphor, the efficiency of the phosphor can be accurately controlled by accurately controlling the temperature of the phosphor, thereby accurately controlling the light output of the whole device.
In this embodiment, referring to fig. 2, the second threshold temperature Tth2 is set to the temperature t1 with the best phosphor excitation efficiency, so that the phosphor can be prevented from being burnt and the best phosphor excitation efficiency can be ensured; and through the size that changes the electric current virtual value, can realize the regulation to the refrigeration volume, through the regulation to the refrigeration volume, can realize the accurate regulation to phosphor powder temperature to guarantee that phosphor powder's excitation efficiency remains at efficient excitation state all the time.
In this embodiment, as shown in fig. 7 and 8, in order to realize high-precision temperature control of the phosphor, a non-contact second temperature sensor 22 is configured for the color wheel to detect the temperature of the phosphor, such as a non-contact infrared temperature sensor, and is installed opposite to the circumference where the laser source 8 irradiates the color wheel, and is preferably installed at a symmetrical position of the irradiation point of the laser source.
As shown in fig. 9, the phosphor temperature control module 6 receives the temperature T1 of the phosphor detected by the second temperature sensor 22, and outputs the temperature difference value Δ T of the temperature T1 of the phosphor from the second threshold temperature Tth2 to the semiconductor refrigerator driving circuit 4, so that the semiconductor refrigerator driving circuit 4 outputs the second current based on the temperature difference value.
In this embodiment, the effective value of the second current I2 is adjusted by PWM (pulse width modulation), the temperature difference values are different, the effective value of the second current I2 output by PWM adjustment is also different, and the larger the temperature difference value is, the larger the current effective value is, that is, the larger the duty ratio of the constant current is.
EXAMPLE III
In this embodiment, the temperature of the phosphor is further controlled based on the first and second embodiments.
In this embodiment, as shown in fig. 10, the laser television further includes a refrigeration starting module 7, configured to receive the temperature of the phosphor detected by the second temperature sensor 22 after the color wheel is started, and start the semiconductor refrigerator 3 when the temperature of the phosphor reaches a third threshold temperature Tth 3; here, the third threshold temperature Tth3 is lower than the second threshold temperature Tth 2.
After the color wheel is started, the laser source excites the fluorescent powder to heat the fluorescent powder, during the period, the semiconductor refrigeration device 3 is not started, the second temperature sensor 22 is started to obtain the temperature of the fluorescent powder, when the temperature of the fluorescent powder reaches a third threshold temperature Tth3, the refrigeration starting module 7 starts the semiconductor refrigeration device 3, the fluorescent powder temperature control module 6 outputs a temperature difference value delta T to the semiconductor refrigeration device driving circuit 4, the semiconductor refrigeration device driving circuit 4 outputs a second current I2 to drive the semiconductor device 3 based on the temperature difference value delta T, so that the semiconductor refrigeration device 3 refrigerates the motor shaft 12, and cold energy is transmitted to the environmental metal substrate 11 from the motor shaft 12, so that the fluorescent powder is cooled, the temperature of the fluorescent powder is ensured to be below the second threshold temperature Tth2, the fluorescent powder is ensured not to be burnt, and the excitation efficiency is ensured to be optimal.
When the temperature difference Δ T between the temperature of the phosphor and the second threshold temperature Tth2 is smaller than the fourth threshold temperature Tth4, which is set to be smaller or zero, that is, when the temperature of the phosphor approaches the second threshold temperature Tth2, that is, approaches or reaches the optimum excitation temperature T1 of the phosphor, the semiconductor refrigerator driving circuit 4 repeatedly drives the semiconductor refrigerator 3 to switch between cooling and heating according to the set frequency, and the semiconductor refrigerator 3 is maintained at the second threshold temperature Tth2 to realize constant temperature control.
Through the repeated switching of the steps, the temperature of the fluorescent powder can be ensured to be stabilized near the optimal excitation temperature, and the accurate control of the temperature of the fluorescent powder is realized, so that the efficiency of the fluorescent powder can be accurately controlled, and the light output of the whole machine can be accurately controlled.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the 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 are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A laser television comprising:
a color wheel with phosphor attached thereon;
the motor is used for driving the color wheel to rotate, and the color wheel is arranged on a motor shaft;
it is characterized by also comprising:
the semiconductor refrigerator is fixed with the motor shaft;
the semiconductor refrigerator driving circuit is used for outputting a first current to drive the semiconductor refrigerator so that the temperature of the motor is higher than a first threshold temperature; outputting a second current to drive the semiconductor refrigerator so that the temperature of the fluorescent powder is not higher than a second threshold temperature;
wherein the first current and the second current have opposite current directions.
2. The laser television of claim 1, further comprising:
a first temperature sensor for detecting a temperature of the motor;
the starting module is used for starting the first temperature sensor and the semiconductor refrigerator when the laser television is started; and when the temperature of the motor detected by the first temperature sensor is higher than the first threshold temperature, sending a starting instruction to a driving circuit of the color wheel, and turning off the semiconductor refrigerator.
3. The laser television of claim 1,
the second temperature sensor is used for detecting the temperature of the fluorescent powder;
and the fluorescent powder temperature control module is used for receiving the temperature of the fluorescent powder detected by the second temperature sensor and outputting the temperature difference value between the temperature of the fluorescent powder and the second threshold temperature to the semiconductor refrigerator driving circuit, so that the semiconductor refrigerator driving circuit outputs the second current based on the temperature difference value.
4. The laser television of claim 3, wherein the semiconductor refrigerator driving circuit outputs the second current by PWM according to a temperature difference between the temperature of the phosphor and the second threshold temperature.
5. The laser television of claim 3, further comprising:
the refrigeration starting module is used for receiving the temperature of the fluorescent powder detected by the second temperature sensor and starting the semiconductor refrigerator when the temperature of the fluorescent powder reaches a third threshold temperature;
wherein the third threshold temperature is lower than the second threshold temperature.
6. The laser television of claim 1, wherein the second temperature sensor is a non-contact infrared temperature sensor mounted directly opposite the circumference where the laser source illuminates the color wheel.
7. The laser television of claim 6, wherein the second temperature sensors are installed at symmetrical positions of the irradiation point of the laser light source.
8. The laser television of claim 3, wherein the semiconductor refrigerator driving circuit drives the semiconductor refrigerator to switch before cooling and heating according to a set frequency when a temperature difference between the phosphor temperature and the second threshold temperature is less than a fourth threshold temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010117226.5A CN113382217B (en) | 2020-02-25 | 2020-02-25 | Laser television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010117226.5A CN113382217B (en) | 2020-02-25 | 2020-02-25 | Laser television |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113382217A true CN113382217A (en) | 2021-09-10 |
| CN113382217B CN113382217B (en) | 2024-04-26 |
Family
ID=77569256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010117226.5A Active CN113382217B (en) | 2020-02-25 | 2020-02-25 | Laser television |
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| Country | Link |
|---|---|
| CN (1) | CN113382217B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203587951U (en) * | 2013-11-07 | 2014-05-07 | 芜湖安曼特微显示科技有限公司 | Heat dissipation device of digital micromirror device |
| CN104661005A (en) * | 2013-11-21 | 2015-05-27 | 深圳市光峰光电技术有限公司 | Color wheel device, and light source device as well as projection system thereof |
| CN107272186A (en) * | 2017-06-27 | 2017-10-20 | 湖北久之洋信息科技有限公司 | A kind of projector stationary type fluorescent powder wheel system |
| CN108073026A (en) * | 2016-11-15 | 2018-05-25 | 深圳市光峰光电技术有限公司 | Light supply apparatus, light supply apparatus start method and dependent projections equipment |
| CN108073018A (en) * | 2016-11-15 | 2018-05-25 | 深圳市光峰光电技术有限公司 | The startup method of optic modulating device and dependent projections equipment |
| CN209879245U (en) * | 2019-07-04 | 2019-12-31 | 无锡视美乐激光显示科技有限公司 | Light source optical machine system and laser projection device |
-
2020
- 2020-02-25 CN CN202010117226.5A patent/CN113382217B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203587951U (en) * | 2013-11-07 | 2014-05-07 | 芜湖安曼特微显示科技有限公司 | Heat dissipation device of digital micromirror device |
| CN104661005A (en) * | 2013-11-21 | 2015-05-27 | 深圳市光峰光电技术有限公司 | Color wheel device, and light source device as well as projection system thereof |
| CN108073026A (en) * | 2016-11-15 | 2018-05-25 | 深圳市光峰光电技术有限公司 | Light supply apparatus, light supply apparatus start method and dependent projections equipment |
| CN108073018A (en) * | 2016-11-15 | 2018-05-25 | 深圳市光峰光电技术有限公司 | The startup method of optic modulating device and dependent projections equipment |
| CN107272186A (en) * | 2017-06-27 | 2017-10-20 | 湖北久之洋信息科技有限公司 | A kind of projector stationary type fluorescent powder wheel system |
| CN209879245U (en) * | 2019-07-04 | 2019-12-31 | 无锡视美乐激光显示科技有限公司 | Light source optical machine system and laser projection device |
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| Publication number | Publication date |
|---|---|
| CN113382217B (en) | 2024-04-26 |
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