CN111965929A - Novel total reflection type fluorescent wheel device - Google Patents
Novel total reflection type fluorescent wheel device Download PDFInfo
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- CN111965929A CN111965929A CN202010967026.9A CN202010967026A CN111965929A CN 111965929 A CN111965929 A CN 111965929A CN 202010967026 A CN202010967026 A CN 202010967026A CN 111965929 A CN111965929 A CN 111965929A
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- wheel device
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- total reflection
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
- G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
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- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
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- Projection Apparatus (AREA)
Abstract
The invention discloses a novel total reflection type fluorescent wheel device, which comprises a motor, a high heat conduction substrate turntable, a high reflection film, a fixing device, a fluorescent material area and a high diffuse reflection coating area, wherein the high reflection film is arranged on the motor; the motor is fixedly installed at the circle center of one side of the high-heat-conduction substrate turntable, the high-reflection film is attached to the other side of the high-heat-conduction substrate turntable, the fluorescent material area and the high-diffuse-reflection coating area are attached to the high-reflection film, and the motor and the high-heat-conduction substrate turntable are fixed together by the fixing device. The invention enables the blue laser and the fluorescence excited by the laser to share the light path design, simplifies the illumination system, reduces the assembly difficulty and the manufacturing cost of the illumination system, reduces the light energy loss of the blue laser and improves the light energy utilization rate. And the divergence angle of the blue laser after diffuse reflection is remarkably increased, the coherence is remarkably reduced, and even the appearance of interference speckles is eliminated, and an independent speckle elimination design is not required to be arranged for the blue laser part.
Description
Technical Field
The invention relates to the technical field of laser projection display, in particular to a novel total reflection type fluorescent wheel device which improves the utilization rate of blue light and reduces the appearance of speckles.
Background
The existing mainstream laser projection television generally adopts a scheme of exciting fluorescent powder by a blue laser, and three primary colors are realized by using a fluorescent wheel. The traditional fluorescent wheel structure is generally a fluorescent powder area and a blue light transmission area, the blue light transmission area is generally set to be a hollow-out or diffusion sheet, when blue laser penetrates through the fluorescent wheel, the blue laser passes through an independent blue laser light path and finally penetrates through a dichroic mirror and is combined with fluorescence excited by the laser, and three-primary-color illumination is achieved.
According to the existing scheme, blue laser penetrates through a fluorescent wheel, and although blue laser can be completely transmitted in a blue light transmission area of the fluorescent wheel in a mode of arranging a groove body, wind cutting noise is easily generated due to high-speed rotation of the fluorescent wheel. In the mode of arranging the diffusion sheet, because light spots reaching the diffusion sheet are small, fine dust particles are gathered on the diffusion sheet due to high light energy density, and the gathered dust particles can reduce the passing rate of laser, so that the utilization rate of the laser is reduced. In addition, blue laser need design solitary light path, and because laser wavelength's unicity and phase synchronism can lead to interfering the appearance of speckle, blue laser light path still need be equipped with independent dissipation spot design, this has not only increased the light path complexity, has reduced blue laser's utilization ratio, has still increased assembly degree of difficulty, manufacturing cost, has increased the light source module volume.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention adopts the technical scheme that: a novel total reflection type fluorescent wheel device comprises a motor, a high heat conduction substrate turntable, a high reflection film, a fixing device, a fluorescent material area and a high diffuse reflection coating area; the motor is fixedly installed at the circle center of one side of the high-heat-conduction substrate turntable, the high-reflection film is attached to the other side of the high-heat-conduction substrate turntable, the fluorescent material area and the high-diffuse-reflection coating area are attached to the high-reflection film, and the motor and the high-heat-conduction substrate turntable are fixed together by the fixing device. The high diffuse reflection material area is used for performing diffuse reflection on incident exciting light, the fluorescent material area is used for converting the incident exciting light into fluorescent light with different wavelengths, and the high reflection film is used for reflecting the incident laser light and the fluorescent light excited by the laser light.
Preferably, the fluorescent material area is an arc, the high diffuse reflection coating area is a high diffuse reflection coating arc section, the fluorescent material area and the high diffuse reflection coating arc section enclose a ring shape together, and the fixing device is located at the center of the ring.
Preferably, the fluorescent material region is composed of a red phosphor arc segment and a green phosphor arc segment.
Preferably, the fluorescent material region is composed of a red fluorescent powder arc segment and a yellow fluorescent powder arc segment.
Preferably, the fluorescent material region is composed of a green phosphor arc segment and a yellow phosphor arc segment.
Preferably, the fluorescent material region is composed of a red phosphor arc segment, a green phosphor arc segment, and a yellow phosphor arc segment.
Preferably, the coating in the high diffuse reflection coating area is uniformly dispersed nano particles, the nano particles have a good slow reflection effect, the high diffuse reflection coating area has a low absorption coefficient for blue light with the wavelength of 450 nm-485 nm, and the high diffuse reflection coating has a high heat conduction characteristic, so that heat generated by a light source can be quickly conducted out to avoid high temperature damage to devices.
Preferably, the coating of the high diffuse reflection coating area is one or more of barium sulfate, aluminum oxide, magnesium oxide, titanium oxide, boron nitride, zinc oxide, zirconium oxide, silicon oxide, aluminate, silicate, borate and carbonate.
Preferably, the coating particle size of the high diffuse reflection coating area is 0.1-50 um.
Preferably, the material of the high-reflection film is aluminum or silver.
The invention has the beneficial effects that: the novel total reflection type fluorescent wheel device provided by the invention enables the blue laser and the fluorescence excited by the laser to share the light path, simplifies the illumination system, reduces the assembly difficulty and the manufacturing cost of the illumination system, reduces the light energy loss of the blue laser and improves the light energy utilization rate. And the divergence angle of the blue laser after diffuse reflection is remarkably increased, the coherence is remarkably reduced, and even the appearance of interference speckles is eliminated, and an independent speckle elimination design is not required to be arranged for the blue laser part. In addition, the high diffuse reflection coating has high heat conduction characteristic, and can quickly conduct heat generated by the light source out to avoid high temperature damage to devices. Meanwhile, the phenomenon that the blue light utilization rate is reduced due to the fact that wind-cut noise or a gray layer is gathered on the diffusion sheet in two setting modes of a blue laser area of a traditional fluorescent wheel is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a novel total reflection type fluorescent wheel device disclosed in embodiment 1 of the present invention;
FIG. 2 is a right side view of the novel total reflection type fluorescent wheel device disclosed in embodiment 1 of the present invention;
FIG. 3 is a right side view of another novel total reflection type fluorescent wheel device disclosed in embodiment 1 of the present invention;
FIG. 4 is a schematic structural diagram of a novel total reflection type fluorescent wheel device disclosed in embodiment 2 of the present invention;
FIG. 5 is a right side view of the novel total reflection type fluorescent wheel device disclosed in embodiment 2 of the present invention;
FIG. 6 is a right side view of another novel total reflection type fluorescent wheel device disclosed in embodiment 2 of the present invention;
fig. 7 is a schematic structural view of a novel total reflection type fluorescent wheel device disclosed in embodiment 3 of the present invention;
FIG. 8 is a right side view of the novel total reflection type fluorescent wheel device disclosed in embodiment 3 of the present invention;
FIG. 9 is a right side view of another novel total reflection type fluorescent wheel device disclosed in embodiment 3 of the present invention;
fig. 10 is a schematic structural view of a novel total reflection type fluorescent wheel device disclosed in embodiment 4 of the present invention;
FIG. 11 is a right side view of the novel total reflection type fluorescent wheel device disclosed in embodiment 4 of the present invention;
fig. 12 is a right side view of another novel total reflection type fluorescent wheel device disclosed in embodiment 4 of the present invention.
Reference numerals: 1. a motor; 2. a high thermal conductivity substrate turntable; 3. high-reflection film; 4. a fixing device; 5. a red phosphor arc segment; 6. a green phosphor arc segment; 7. a yellow phosphor arc segment; 8. high diffuse reflection coating arc segment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings, but embodiments of the present invention are not limited thereto.
Example 1:
the embodiment provides a novel total reflection formula fluorescence wheel device, as shown in fig. 1, including motor 1, high heat conduction basement carousel 2, high anti-membrane 3, be used for fixing motor and carousel fixing device 4, red phosphor arc section 5, the green phosphor arc section 6, the high diffuse reflection coating arc section 8 of stimulated emission ruddiness of stimulated emission.
Specifically, a blue laser is selected as a light source of the total reflection type fluorescent wheel device, a high reflection film 3 attached to the surface of a high heat conduction substrate turntable 2 is used for reflecting blue laser and fluorescence excited by the laser, a red fluorescent powder arc section 5, a green fluorescent powder arc section 6 and a high diffuse reflection coating arc section 8 are attached to the surface of the high reflection film 3, the red fluorescent powder arc section 5, the green fluorescent powder arc section 6 and the high diffuse reflection coating arc section 8 are enclosed to form a ring shape, and a fixing device 4 is located in the center of the ring. The red phosphor segment 5 is used to produce red light, the green phosphor segment 6 is used to produce green light, and the high diffuse reflectance coating segment 8 causes diffuse reflectance of blue laser light. When the incident laser light is irradiated on the total reflection type fluorescent wheel device, the blue laser light and the red and green light excited by the laser light are reflected due to the existence of the high reflection film 3, and the reflected light is continuously used. And the blue laser is subjected to diffuse reflection after being irradiated on the arc-shaped section 8 of the high-diffuse-reflection coating, the divergence angle of the blue laser is remarkably increased, the coherence is remarkably reduced, and even the appearance of interference speckles is eliminated, and the reflected blue laser and the fluorescence excited by the laser can share a light path design.
The material of the high-reflection film 3 may be aluminum or silver. The high diffuse reflection coating in the high diffuse reflection coating arc section 8 is prepared from inorganic materials which are mainly excellent nano particles and are uniformly dispersed. The coating can comprise one or more of barium sulfate, aluminum oxide, magnesium oxide, titanium oxide, boron nitride, zinc oxide, zirconium oxide, silicon oxide, aluminate, silicate, borate, carbonate and the like, the particle size of the high diffuse reflection coating particles is 0.1-50um, the particle size has an excellent diffuse reflection effect, the high diffuse reflection coating has a high heat conduction characteristic, heat generated by a light source can be quickly conducted out, and high-temperature damage to devices can be avoided.
The red phosphor arc-shaped section 5, the green phosphor arc-shaped section 6 and the high diffuse reflection coating arc-shaped section 8 of the total reflection type fluorescent wheel device can be respectively provided with one section and are circumferentially and adjacently distributed, as shown in fig. 2; or may each have two segments and be circumferentially staggered as shown in figure 3.
Example 2:
this embodiment provides a novel total reflection formula fluorescence wheel device, as shown in fig. 4, including motor 1, high heat conduction basement carousel 2, high anti-membrane 3, be used for fixing motor and carousel fixing device 4, red phosphor arc section 5, the yellow phosphor arc section 7 of stimulated emission yellow light, high diffuse reflection coating arc section 8 of stimulated emission ruddiness.
Specifically, a blue laser is selected as a light source of the total reflection type fluorescent wheel device, a high reflection film 3 attached to the surface of a high heat conduction substrate turntable 2 is used for reflecting blue laser and fluorescence excited by the laser, a red fluorescent powder arc section 5, a yellow fluorescent powder arc section 7 and a high diffuse reflection coating arc section 8 are attached to the surface of the high reflection film 3, the red fluorescent powder arc section 5, the yellow fluorescent powder arc section 7 and the high diffuse reflection coating arc section 8 are enclosed to form a circular ring shape, and a fixing device 4 is located at the center of the circular ring. The red phosphor segment 5 is used to produce red light, the yellow phosphor segment 7 is used to produce yellow light, and the high diffuse reflectance coating segment 8 diffusely reflects blue laser light. When the incident laser light irradiates on the total reflection type fluorescent wheel device, the blue laser light and the red light and the yellow light excited by the laser light are reflected due to the existence of the high reflection film 3, and the reflected light is continuously used. And the blue laser is subjected to diffuse reflection after being irradiated on the arc-shaped section 8 of the high-diffuse-reflection coating, the divergence angle of the blue laser is remarkably increased, the coherence is reduced, the appearance of interference speckles is reduced or even eliminated, and the reflected blue laser and fluorescence excited by the blue laser can share a light path design.
The material of the high reflective film 3 and the high diffuse reflection paint in the high diffuse reflection paint arc segment 8 are the same as in example 1.
The red phosphor arc-shaped section 5, the yellow phosphor arc-shaped section 7 and the high diffuse reflection coating arc-shaped section 8 of the total reflection type phosphor wheel device can be respectively provided with one section and are circumferentially and adjacently distributed, as shown in fig. 5; or each may have two segments and be circumferentially staggered as shown in figure 6.
Example 3:
the embodiment provides a novel total reflection formula fluorescence wheel device, as shown in fig. 7, including motor 1, high heat conduction basement carousel 2, high anti-membrane 3, be used for fixing motor and carousel fixing device 4, the green phosphor arc section 6 of stimulated emission green glow, the yellow phosphor arc section 7 of stimulated emission yellow light, high diffuse reflection coating arc section 8.
Specifically, a blue laser is selected as a light source of the total reflection type fluorescent wheel device, a high reflection film 3 attached to the surface of a high heat conduction substrate turntable 2 is used for reflecting blue laser and fluorescence excited by the laser, a green fluorescent powder arc section 6, a yellow fluorescent powder arc section 7 and a high diffuse reflection coating arc section 8 are attached to the surface of the high reflection film 3, the green fluorescent powder arc section 6, the yellow fluorescent powder arc section 7 and the high diffuse reflection coating arc section 8 are enclosed to form a ring shape, and a fixing device 4 is located in the center of the ring. The green phosphor arc 6 is used to produce green light, the yellow phosphor arc 7 is used to produce yellow light, and the high diffuse reflectance paint arc 8 diffusely reflects blue laser light. When the incident laser light is irradiated on the total reflection type fluorescent wheel device, the blue laser light and the green and yellow light excited by the laser light are reflected due to the presence of the highly reflective film 3, and the reflected light continues to be used. And the blue laser is subjected to diffuse reflection after being irradiated on the arc-shaped section 8 of the high-diffuse-reflection coating, the divergence angle of the blue laser is remarkably increased, the coherence is reduced, the appearance of interference speckles is reduced or even eliminated, and the reflected blue laser and fluorescence excited by the blue laser can share a light path design.
The material of the high reflective film 3 and the high diffuse reflection paint in the high diffuse reflection paint arc segment 8 are the same as in example 1.
The green phosphor arc-shaped section 6, the yellow phosphor arc-shaped section 7 and the high diffuse reflection coating arc-shaped section 8 of the total reflection type fluorescent wheel device can be respectively provided with one section and are circumferentially and adjacently distributed, as shown in fig. 8; or each may have two segments and be circumferentially staggered as shown in figure 9.
Example 4:
the embodiment provides a novel total reflection formula fluorescence wheel device, as shown in fig. 10, including motor 1, high heat conduction basement carousel 2, high anti-membrane 3, be used for fixed motor and carousel fixing device 4, the red phosphor arc section 5 of stimulated emission ruddiness, the green phosphor arc section 6 of stimulated emission green glow, the yellow phosphor arc section 7 of stimulated emission yellow light, high diffuse reflection coating arc section 8.
Specifically, a blue laser is selected as a light source of the total reflection type fluorescent wheel device, a high reflection film 3 attached to the surface of a high heat conduction substrate turntable 2 is used for reflecting blue laser and fluorescence excited by the laser, a red fluorescent powder arc section 5, a green fluorescent powder arc section 6, a yellow fluorescent powder arc section 7 and a high diffuse reflection coating arc section 8 are attached to the surface of the high reflection film 3, the red fluorescent powder arc section 5, the green fluorescent powder arc section 6, the yellow fluorescent powder arc section 7 and the high diffuse reflection coating arc section 8 are enclosed to form a ring shape, and a fixing device 4 is located at the center of the ring. The red phosphor arc 5 is used to produce red light, the green phosphor arc 6 is used to produce green light, the yellow phosphor arc 7 is used to produce yellow light, and the high diffuse reflectance paint arc 8 causes diffuse reflectance of blue laser light. When the incident laser light is irradiated on the total reflection type fluorescent wheel device, the blue laser light and the red, green and yellow light excited by the laser light are reflected due to the presence of the highly reflective film 3, and the reflected light continues to be used. And the blue laser is subjected to diffuse reflection after being irradiated on the arc-shaped section 8 of the high-diffuse-reflection coating, the divergence angle of the blue laser is remarkably increased, the coherence is reduced, the appearance of interference speckles is reduced or even eliminated, and the reflected blue laser and fluorescence excited by the blue laser can share a light path design.
The material of the high reflective film 3 and the high diffuse reflection paint in the high diffuse reflection paint arc segment 8 are the same as in example 1.
The red phosphor arc-shaped section 5, the green phosphor arc-shaped section 6, the yellow phosphor arc-shaped section 7 and the high diffuse reflection coating arc-shaped section 8 of the total reflection type phosphor wheel device can be respectively provided with one section and are circumferentially and adjacently distributed, as shown in fig. 11; or each may have two segments and be circumferentially staggered as shown in fig. 12.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A novel total reflection type fluorescent wheel device is characterized by comprising a motor, a high heat conduction substrate turntable, a high reflection film, a fixing device, a fluorescent material area and a high diffuse reflection coating area; the motor is fixedly installed at the circle center of one side of the high-heat-conduction substrate turntable, the high-reflection film is attached to the other side of the high-heat-conduction substrate turntable, the fluorescent material area and the high-diffuse-reflection coating area are attached to the high-reflection film, and the motor and the high-heat-conduction substrate turntable are fixed together by the fixing device.
2. The novel total reflection type fluorescent wheel device as claimed in claim 1, wherein the fluorescent material region is an arc, the high diffuse reflection coating region is a high diffuse reflection coating arc section, the fluorescent material region and the high diffuse reflection coating arc section together enclose a circular ring, and the fixing device is located at the center of the circular ring.
3. The novel total reflective phosphor wheel assembly of claim 2, wherein said phosphor zone is comprised of a red phosphor arc and a green phosphor arc.
4. The novel total reflection type fluorescent wheel device as claimed in claim 2, wherein the fluorescent material region is composed of a red fluorescent powder arc segment and a yellow fluorescent powder arc segment.
5. The novel total reflective phosphor wheel assembly of claim 2, wherein said phosphor zone is comprised of green phosphor segments and yellow phosphor segments.
6. The novel total reflection type fluorescent wheel device of claim 2, wherein the fluorescent material region is composed of a red phosphor arc segment, a green phosphor arc segment, and a yellow phosphor arc segment.
7. The novel total reflection type fluorescent wheel device as claimed in any one of claims 1 to 6, wherein the coating of the high diffuse reflection coating region is uniformly dispersed nano-particles.
8. The novel total reflection type fluorescent wheel device as claimed in claim 7, wherein the coating of the high diffuse reflection coating area is one or more of barium sulfate, aluminum oxide, magnesium oxide, titanium oxide, boron nitride, zinc oxide, zirconium oxide, silicon oxide, aluminate, silicate, borate and carbonate.
9. The novel total reflection type fluorescent wheel device as claimed in claim 8, wherein the coating particle size of the high diffuse reflection coating area is 0.1-50 um.
10. The novel total reflection type fluorescent wheel device as claimed in claim 7, wherein the material of the high reflection film is aluminum or silver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010967026.9A CN111965929A (en) | 2020-09-15 | 2020-09-15 | Novel total reflection type fluorescent wheel device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010967026.9A CN111965929A (en) | 2020-09-15 | 2020-09-15 | Novel total reflection type fluorescent wheel device |
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| CN111965929A true CN111965929A (en) | 2020-11-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170111620A1 (en) * | 2015-10-14 | 2017-04-20 | Hisense Co., Ltd. | Fluorescent wheel, double-color laser source and laser projection equipment |
| CN109164589A (en) * | 2018-09-18 | 2019-01-08 | 无锡视美乐激光显示科技有限公司 | A kind of light splitting Multiplexing apparatus and light-source system |
| US20190377251A1 (en) * | 2018-06-11 | 2019-12-12 | Coretronic Corporation | Wavelength-converting element, projection apparatus, and manufacturing method of wavelength-converting element |
| CN110737085A (en) * | 2018-07-18 | 2020-01-31 | 深圳光峰科技股份有限公司 | Wavelength conversion device |
| CN111381419A (en) * | 2018-12-27 | 2020-07-07 | 深圳光峰科技股份有限公司 | Wavelength conversion device, preparation method thereof and light-emitting device |
-
2020
- 2020-09-15 CN CN202010967026.9A patent/CN111965929A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170111620A1 (en) * | 2015-10-14 | 2017-04-20 | Hisense Co., Ltd. | Fluorescent wheel, double-color laser source and laser projection equipment |
| US20190377251A1 (en) * | 2018-06-11 | 2019-12-12 | Coretronic Corporation | Wavelength-converting element, projection apparatus, and manufacturing method of wavelength-converting element |
| CN110737085A (en) * | 2018-07-18 | 2020-01-31 | 深圳光峰科技股份有限公司 | Wavelength conversion device |
| CN109164589A (en) * | 2018-09-18 | 2019-01-08 | 无锡视美乐激光显示科技有限公司 | A kind of light splitting Multiplexing apparatus and light-source system |
| CN111381419A (en) * | 2018-12-27 | 2020-07-07 | 深圳光峰科技股份有限公司 | Wavelength conversion device, preparation method thereof and light-emitting device |
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Application publication date: 20201120 |