CN203810291U - Fluorescent powder color wheel with diffuse reflection base plate based optical design - Google Patents
Fluorescent powder color wheel with diffuse reflection base plate based optical design Download PDFInfo
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- CN203810291U CN203810291U CN201420077450.6U CN201420077450U CN203810291U CN 203810291 U CN203810291 U CN 203810291U CN 201420077450 U CN201420077450 U CN 201420077450U CN 203810291 U CN203810291 U CN 203810291U
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- Optical Elements Other Than Lenses (AREA)
Abstract
The utility model relates to a fluorescent powder color wheel with the diffuse reflection base plate based optical design. The fluorescent powder color wheel comprises a diffuse reflection base plate (10), and a fluorescent powder plate layer (20) that is arranged on the diffuse reflection base plate (10). According to the fluorescent powder color wheel with the diffuse reflection base plate based optical design, spots on the base plate, produced by a laser beam passing through the fluorescent powder plate layer, is diffused to some extent, thus the utilization efficiency of fluorescent powder in the fluorescent powder color wheel is raised, the overall lighting efficiency of the fluorescent powder color wheel is raised, and the problem of local heating of the fluorescent powder color wheel is also reduced.
Description
Technical field
The utility model relates to a kind of method that fluorescent powder color wheel is made and light path is optimized of new type of substrate, refer more particularly to a kind of diffuse reflection substrate manufacture fluorescent powder color wheel that utilizes, improve fluorescent material utilization ratio, strengthen fluorescent powder color wheel whole lighting efficiency, improve the problem of fluorescent powder color wheel local pyrexia, and utilize diffuse reflection substrate to carry out the method that light path is optimized in optical design.
Background technology
Now, increasing projector selects mainly to utilize LED (light Emitting Diode) or LD (Laser Diode) as display light source, and wherein a kind of pattern is that the light that directly utilizes polychrome excitation source to send the different wave length such as red, green or blue is realized colored demonstration as light source; Another is to utilize a kind of redness green or blue as light source, recycles it and excites, changes out other two kinds of three primary colors, finally by modulation light path, realizes colour projection and shows.US Patent No. 7547114B2 proposes a kind of method that produces high brightness sequential coloured light, and it is luminous that the method is collected excitation source focus on a fluorescent material rotating disk fluorescence excitation powder material, and along with the rotation of rotating disk produces the color sequence of light of periodic timing; Use the method can produce the projection light source of high brightness.The fluorescent powder color wheel using by this principle, the general fluorescence pink colour section/lamella that is coated with one or more different colours, different excitation spectrums on substrate, thereby by LED or LD light source, inspire the light of different wave length color, and using this light source as projector.
At present, the making of fluorescent powder color wheel is to be mainly coated with fluorescent material on certain has the substrate of high reflectance, with this, improves the utilization ratio of fluorescent material, strengthens the whole lighting efficiency of fluorescent powder color wheel.Therefore the substrate that, common fluorescent powder color wheel is used mostly is and is coated with metal high-reflecting film as the mirror metal material of aluminium film or silverskin etc.Because laser spot diameter is generally in 1.5 ~ 2mm left and right, and the width of fluorescence pink colour section is generally in about 4 ~ 4.5mm (these parameters specifically depend on the light path design of receiving optical lens etc.), the laser of incident is the scattering process due to fluorescent powder grain at fluorescence pink colour intersegmental part, hot spot can expand to some extent, about 3mm left and right, therefore at the diverse location of fluorescence pink colour intersegmental part, the light distribution of incident laser is inhomogeneous, and this just means that a part of fluorescence pink colour section is not fully utilized; And less laser facula unit energy is excessively strong, can make the temperature drift of local fluorescence pink colour section, luminous efficiency also can correspondingly be reduced, the life-span of local fluorescent material look section and substrate is exerted an adverse impact simultaneously.
And, due in complete machine light path for the demand of light diffusion, in light path design, often need to add other opticses with diffused light function (as diffusion sheet etc.), be combined with fluorescent powder color wheel, complicated complete machine light path design, has increased light-source system cost.
In order to solve the defect of above-mentioned existing conventional fluorescent pink colour wheel and the not enough problem of improving one's methods, the utility model proposes " utilizing the design of substrate diffuse reflection optics to improve fluorescent material utilization ratio and the method to the optimization of light path design thereof ".
Utility model content
The utility model is in order to solve the foregoing problems of existing fluorescent powder color wheel, a kind of irreflexive substrate that has is provided, to improve the utilization rate to fluorescent material in fluorescent powder color wheel, strengthen the whole lighting efficiency of fluorescent powder color wheel, improve the problem of fluorescent powder color wheel local pyrexia, and can be optimized light path design.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: utilize substrate diffuse reflection (wave band 100 ~ 760nm, diffuse reflectance 10% ~ 100%, comprising specular reflectivity, transmissivity, absorptivity and scattered power) optical design, on substrate, be coated with fluorescent material, make fluorescent powder color wheel.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: utilize substrate diffuse reflection (wave band 100 ~ 760nm, diffuse reflectance 10% ~ 100%, comprising specular reflectivity, transmissivity, absorptivity and scattered power) optical design, make the substrate of fluorescent powder color wheel itself there is the astigmatism functions of certain diffusion sheet, thereby can replace in existing light path some optics that plays astigmatism effect (as diffusion sheet, with the colour wheel of diffusion sheet etc.).
The diffuse reflection substrate that the utility model is related, finger is full spectrum (100nm-760nm) diffuse reflection (diffuse reflectance 10% ~ 100%) mirror-reflection in visible ray and ultraviolet light range, transmitance and absorptivity sum are 1% ~ 80%) substrate, but be not limited to above wave-length coverage.The heat that this substrate can produce the colour wheel of making when fluorescent material is excited simultaneously carries out playing the function of high efficiency and heat radiation.
The related diffuse reflection baseplate material of the utility model comprises metal, nonmetal, two kinds of organic material or inorganic material or composite substrate or above-mentioned materials and two or more composite base plates, also comprise and there is the irreflexive metal of certain limit, high-molecular organic material is as high whiteness nylon/plastics/Teflon etc., high whiteness nonmetallic compound material is as pottery (comprising the ceramic body that sintering is crossed and the ceramic idiosome that sintering is not crossed) etc., but is not limited to above-mentioned material.
The irreflexive formation processing method of substrate surface comprises: adopt powder metallurgy sintered mode or the high pressure mode such as cold pressing to obtain the homogenous material system of high whiteness or the metallic compound of heterogeneous material system mixture as single-phase or multiphase ceramic, cermet etc., and obtain the nonmetallic surfaces such as high polymer that have high irreflexive metal surface or have high whiteness; 2) for all surface roughening process of metal surface or nonmetallic surface, such as surface sand-blasting roughening process etc.; 3) substrate surface is realized the composite surface material preparation technology of high diffuse-reflective material coating or coating, comprise modes such as adopting thermal spraying or flame-spraying or electric arc plating, adopt conventional spraying, electrochemistry plate or are coated with ceramic glaze or swabbing mode, at described substrate surface, form one or more layers film with high diffuse effect or coating or glaze layer or coating.But be not limited in above several mode.4) substrate surface can be made the three-dimensional convex-concave structure with submillimeter level, is beneficial to further strengthen dispersion effect.。
The surface diffuse reflectance treatment process of substrate diffuse reflection film or coating or coating or glaze layer or substrate body, its finish materials can select to have the material system of surperficial high diffuse reflective characteristics, as high purity aluminium oxide, magnesia, titanium oxide, zirconia, barium monoxide, calcium phosphate, barium phosphate, barium sulfate, calcium silicates, calcium carbonate, boron nitride, zirconium silicate, (oxygen) zirconium chloride, the quartzy nitride that waits, oxide, sulfide, phosphide, boride, aluminate, silicate, borate, carbonate, one or several in the contour whiteness material of chloride and high white clay, but be not limited in above different materials.
The surface with diffuse reflection or scattering of substrate can be all surfaces of substrate, side or surface or the side of part.
The shape of diffuse reflection substrate can be triangle, circle, and square or other any regular or irregularly shaped, substrate can carry out or not carry out any extruding, cutting, the machinings such as laser or any type of processing mode.
The light path design that the existence of diffuse reflection substrate is optimized includes but not limited to: in conjunction with excitation beam being produced to the combination of reflection and scattering process, save the optics with diffusion function, simplify light path, save optical path space etc.
The purpose of this utility model is to provide a kind of novel fluorescent powder color wheel diffuse reflection substrate optical design, the hot spot that excitation beam is formed on substrate through fluorescent material lamella carries out diffusion to a certain degree, to improve the fluorescent material utilization ratio of fluorescent powder color wheel, strengthen the whole lighting efficiency of fluorescent powder color wheel, improve the problem of fluorescent powder color wheel local pyrexia, and utilize diffuse reflection substrate to carry out optical design and optimize light path.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the hot spot schematic diagram of existing common fluorescent powder color wheel board structure and formation.
Fig. 2 is the fluorescent powder color wheel board structure of the utility model embodiment mono-and the hot spot schematic diagram of formation.
Fig. 3 is the fluorescent powder color wheel board structure schematic diagram of the utility model embodiment five.
Fig. 4 is the fluorescent powder color wheel board structure schematic cross-section of the utility model embodiment five.
Fig. 5 is the hot spot schematic diagram that high specular reflectivity 98% substrate forms.
Fig. 6 is the hot spot schematic diagram that diffuse reflectance 80% substrate forms.
Fig. 7 is the hot spot schematic diagram that diffuse reflectance 97% substrate forms.
The specific embodiment
Embodiment mono-:
On the circular substrate 10 of the metallic aluminium that is 40mm at diameter, carrying out surface diffuse reflectance layer 501 processes, adopt in 100nm ~ 760nm wave-length coverage, on the white glaze material coating of diffuse reflectance 80% and aluminium base 10, form diffuse reflector 501, the reflectivity of substrate integral body is 98%, wherein diffuse reflectance is 80%, and specular reflectivity is 18%.Mode by a glue or spraying or printing on the surface of diffuse reflector 501 is coated with fluorescent material, forms fluorescent material lamella 20, and the width of fluorescent material lamella 20 is 4mm, and thickness is 0.2mm.The laser beam 102 that LASER Light Source 101 sends is injected fluorescent material lamella 20 with the incidence angle of 45 degree, under the scattering process of fluorescent powder grain itself and the diffuse reflection effect of substrate, on fluorescent material lamella 20, form the hot spot 32 of 3.5mm diameter, and formed folded light beam 103.The folded light beam 103 that 40 pairs of fluorescent material of receipts optical lens inspire is received light.With under similarity condition, compare with common silver-plated metal aluminum substrate, the reflectivity of substrate 10 is that the diffuse reflectance of 98%(substrate surface 501 is 80%, specular reflectivity is 18%), the reflectivity on silver-plated metal aluminum substrate surface is as a comparison similarly 98%, in this case, the substrate and the duplicate experiment condition that adopt same material, found that, the light efficiency of the fluorescent powder color wheel of the present embodiment has improved 6%.Concrete data are in Table 1.
Embodiment bis-:
On the ceramic circular substrate 10 that is 40mm at diameter, carrying out surface diffuse reflectance layer 501 processes, adopt in 100nm ~ 760nm wave-length coverage, diffuse reflectance be the coating of 10% white glaze material with ceramic circular substrate 10 on form diffuse reflector 501, the reflectivity of substrate integral body is 98%, wherein diffuse reflectance is 10%, and specular reflectivity is 18%.Mode by a glue or spraying or printing on the surface of diffuse reflector 501 is coated with fluorescent material, forms fluorescent material lamella 20, and the width of fluorescent material lamella 20 is 4mm, and thickness is 0.2mm.The laser beam 102 that LASER Light Source 101 sends is injected fluorescent material lamella 20 with the incidence angle of 45 degree, under the scattering process of fluorescent powder grain itself and the diffuse reflection effect of substrate, on fluorescent material lamella 20, form the hot spot 32 of 3.5mm diameter, and formed folded light beam 103.The folded light beam 103 that 40 pairs of fluorescent material of receipts optical lens inspire is received light.The reflectivity on silver-plated metal aluminum substrate surface is as a comparison similarly 98%, in this case, adopts substrate and the duplicate experiment condition of same material, found that, the light efficiency of the fluorescent powder color wheel of the present embodiment has improved 1%.Concrete data are in Table 1.
Embodiment tri-:
On the circular substrate 10 of the metallic iron that is 40mm at diameter, carrying out surface diffuse reflectance layer 501 processes, adopt in 100nm ~ 760nm wave-length coverage, diffuse reflectance is to form diffuse reflector 501 on 60% white glaze material coating and the circular substrate that belongs to iron, the reflectivity of substrate integral body is 98%, wherein diffuse reflectance is 60%, and specular reflectivity is 18%.Mode by a glue or spraying or printing on the surface of diffuse reflector 501 is coated with fluorescent material, forms fluorescent material lamella 20, and the width of fluorescent material lamella 20 is 4mm, and thickness is 0.2mm.The laser beam 102 that LASER Light Source 101 sends is injected fluorescent material lamella 20 with the incidence angle of 45 degree, under the scattering process of fluorescent powder grain itself and the diffuse reflection effect of substrate, on fluorescent material lamella 20, form the hot spot 32 of 3.5mm diameter, and formed folded light beam 103.The folded light beam 103 that 40 pairs of fluorescent material of receipts optical lens inspire is received light.The reflectivity on silver-plated metal aluminum substrate surface is as a comparison similarly 98%, in this case, adopts substrate and the duplicate experiment condition of same material, found that, the light efficiency of the fluorescent powder color wheel of the present embodiment has improved 3%.Concrete data are in Table 1.
Embodiment tetra-:
On the circular substrate 10 of the metallic copper that is 40mm at diameter, carrying out surface diffuse reflectance layer 501 processes, adopt in 100nm ~ 760nm wave-length coverage, diffuse reflectance be the coating of 60% white glaze material with the circular substrate of metallic copper on form diffuse reflector 501, the reflectivity of substrate integral body is 98%, wherein diffuse reflectance is 60%, and specular reflectivity is 18%.Mode by a glue or spraying or printing on the surface of diffuse reflector 501 is coated with fluorescent material, forms fluorescent material lamella 20, and the width of fluorescent material lamella 20 is 4mm, and thickness is 0.2mm.The laser beam 102 that LASER Light Source 101 sends is injected fluorescent material lamella 20 with the incidence angle of 45 degree, under the scattering process of fluorescent powder grain itself and the diffuse reflection effect of substrate, on fluorescent material lamella 20, form the hot spot 32 of 3.5mm diameter, and formed folded light beam 103.The folded light beam 103 that 40 pairs of fluorescent material of receipts optical lens inspire is received light.The reflectivity on silver-plated metal aluminum substrate surface is as a comparison similarly 98%, in this case, adopts substrate and the duplicate experiment condition of same material, found that, the light efficiency of the fluorescent powder color wheel of the present embodiment has improved 0.5%.Concrete data are in Table 1
Embodiment five:
Figure 5 shows that the utility model is used fluorescent powder color wheel board structure.Use the metallic aluminium circular ring plate substrate 11 that diameter is 50mm, mechanical presses processing mode, while take substrate 11 horizontal positioned, the lowest surfaces of upper surface is datum level, be pre-formed that to take metallic aluminium circular ring plate substrate external diameter be benchmark, width is 4mm, the degree of depth is-0.2mm that angle is the recessed fluorescent powder coating region 20 of 300 degree.By spraying coating process, on the surface of the non-recessed area of substrate 11, form and there is the diffuse reflector 502 of high diffuse reflectance 70%, and finally make fluorescent powder color wheel.The high diffuse reflection region 502 of this fluorescent powder color wheel, can play light diffusion to the segment beam of LASER Light Source, has saved the use of diffusion sheet in light path, has optimized light path design.
Above-described embodiment is only several instantiation of the present utility model, not the utility model technical scope is done to any restriction.Any modification that every foundation technical spirit of the present utility model is made embodiment above, equivalent variations and modification, all still belong to technology contents of the present utility model and category.
Table 1 is the silver-plated high mirror-reflection substrate of the standard of the diffuse reflection substrate in all embodiment of the present utility model, makes respectively the light efficiency comparable situation after fluorescent powder color wheel.
| Embodiment | The specular reflectivity in substrate surface reflecting layer | The diffuse reflectance of substrate surface layer | The transmitance of substrate surface layer adds absorptivity | The fluorescent powder color wheel of making excite light efficiency comparison (20W) |
| Embodiment mono- | 18% | 80% | 2% | 1.06 |
| Embodiment bis- | 88% | 10% | 2% | 1.01 |
| Embodiment tri- | 37% | 60% | 3% | 1.03 |
| Embodiment tetra- | - | 97% | 3% | 1.005 |
| Contrast standard sample | 93% | 5% | 2% | 1.00 |
Note: contrast standard sample refers to the fluorescent powder coating carrying out after the high reflection of plating silver film on metal aluminum substrate and makes fluorescent powder color wheel.
Claims (4)
1. utilize diffuse reflection substrate to carry out a fluorescent powder color wheel for optical design, it is characterized in that, comprise diffuse reflection substrate (10) and be arranged on the fluorescent material lamella (20) on diffuse reflection substrate (10).
2. a kind of fluorescent powder color wheel that utilizes diffuse reflection substrate to carry out optical design according to claim 1, is characterized in that, the exciting light of any wavelength of the applicable optical wavelength range 100-760 nm of described diffuse reflection substrate (10).
3. a kind of fluorescent powder color wheel that utilizes diffuse reflection substrate to carry out optical design according to claim 1, is characterized in that, between described diffuse reflection substrate (10) and fluorescent material lamella (20), establishes diffuse reflection coating.
4. a kind of fluorescent powder color wheel that utilizes diffuse reflection substrate to carry out optical design according to claim 1, it is characterized in that, the surface with diffuse reflection or scattering of diffuse reflection substrate (10) is all or part of surface of substrate, or all or part of side of substrate.
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| CN201420077450.6U CN203810291U (en) | 2014-02-24 | 2014-02-24 | Fluorescent powder color wheel with diffuse reflection base plate based optical design |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912848A (en) * | 2014-02-24 | 2014-07-09 | 扬州吉新光电有限公司 | Fluorescent powder color wheel for optical design by using diffuse reflection substrate and manufacture method of fluorescent powder color wheel |
| 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 |
| CN110376728A (en) * | 2018-04-12 | 2019-10-25 | 深圳光峰科技股份有限公司 | Color block component and light-source system and projection device |
-
2014
- 2014-02-24 CN CN201420077450.6U patent/CN203810291U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912848A (en) * | 2014-02-24 | 2014-07-09 | 扬州吉新光电有限公司 | Fluorescent powder color wheel for optical design by using diffuse reflection substrate and manufacture method of fluorescent powder color wheel |
| CN103912848B (en) * | 2014-02-24 | 2016-07-06 | 扬州吉新光电有限公司 | A kind of fluorescent powder color wheel utilizing diffuse-reflectance substrate to carry out optical design and preparation method thereof |
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| CN110376728B (en) * | 2018-04-12 | 2022-03-15 | 深圳光峰科技股份有限公司 | Color wheel assembly, light source system and projection equipment |
| CN114518650A (en) * | 2018-04-12 | 2022-05-20 | 深圳光峰科技股份有限公司 | Color wheel assembly, light source system and projection equipment |
| US11822052B2 (en) | 2018-04-12 | 2023-11-21 | Appotronics Corporation Limited | Colour wheel assembly, light source system, and projection device |
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Inventor after: Yang Shengqiang Inventor after: Zhou Hengrong Inventor before: Zhou Jixin Inventor before: Qian Xianglin Inventor before: Yang Shengqiang Inventor before: Zhou Hengrong |
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Effective date of registration: 20180724 Address after: 200131 all parts of No. 33, 76 East Road three, Shanghai free trade trial area, Shanghai. Patentee after: MATERION PRECISION OPTICS (SHANGHAI) LTD. Address before: 225200 Jiangsu Yangzhou Jiangdu Economic Development Zone Bridge Industrial Concentration Area Patentee before: YANGZHOU JIXIN PHOTOELECTRIC CO.,LTD. |
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Commission number: 5W115519 Conclusion of examination: Declare that the technical scheme of claims 1, 3 and 4 that "the surface with diffuse reflection or scattering of the diffuse reflection substrate (10) is all or part of the side of the substrate" is invalid, and maintain the patent validity on the basis of the technical scheme of claims 2 and 4 that "the surface with diffuse reflection or scattering of the diffuse reflection substrate (10) is all or part of the surface of the substrate". Decision date of declaring invalidation: 20190129 Decision number of declaring invalidation: 38799 Denomination of utility model: Fluorescent powder color wheel for optical design by using diffuse reflection substrate and manufacture method of fluorescent powder color wheel Granted publication date: 20140903 Patentee: MATERION PRECISION OPTICS (SHANGHAI) LTD. |
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Granted publication date: 20140903 |
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