CN116540398A - Wavelength conversion device and light source device - Google Patents
Wavelength conversion device and light source device Download PDFInfo
- Publication number
- CN116540398A CN116540398A CN202210087927.8A CN202210087927A CN116540398A CN 116540398 A CN116540398 A CN 116540398A CN 202210087927 A CN202210087927 A CN 202210087927A CN 116540398 A CN116540398 A CN 116540398A
- Authority
- CN
- China
- Prior art keywords
- light
- wavelength conversion
- excited
- conversion device
- light source
- Prior art date
- 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.)
- Pending
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 138
- 239000000463 material Substances 0.000 claims abstract description 97
- 230000005284 excitation Effects 0.000 claims abstract description 62
- 239000000919 ceramic Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 38
- 210000000887 face Anatomy 0.000 description 24
- 239000000843 powder Substances 0.000 description 22
- 238000010586 diagram Methods 0.000 description 14
- 230000003287 optical effect Effects 0.000 description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 6
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 229910052581 Si3N4 Inorganic materials 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 208000020564 Eye injury Diseases 0.000 description 3
- 238000004590 computer program Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000012736 patent blue V Nutrition 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- 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
-
- 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
- G03B21/16—Cooling; Preventing overheating
-
- 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
- G03B21/206—Control of light source other than position or intensity
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Optical Filters (AREA)
Abstract
The application discloses a wavelength conversion device, the wavelength conversion device includes: a first face and at least two second faces, each of the at least two second faces having a wavelength converting material; the wavelength conversion material is irradiated by the incident excitation light to excite excited light, and the excited light exits from the first surface; the emission mode of the excited light comprises: one path of the excited light is emitted through the first surface, and the other path of the excited light is emitted through the first surface after being reflected by the second surface. The application also discloses a light source device.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a wavelength conversion device and a light source device.
Background
In the related art, a fluorescent wheel provided in a projection apparatus is excited from one surface of the fluorescent wheel by a light source to generate fluorescence. In this way, there is a problem that the local temperature of the wavelength conversion material is too high, which causes saturation of the wavelength conversion material, resulting in lower conversion efficiency of the wavelength conversion material.
Disclosure of Invention
The application mainly provides a wavelength conversion device and a light source device, which can reduce the rate of temperature rise of a wavelength conversion material and further can improve the conversion efficiency of the wavelength conversion material.
The technical scheme of the application is realized as follows:
in a first aspect, embodiments of the present application provide a wavelength conversion device, the device including: a first face and at least two second faces, each of the at least two second faces having a wavelength converting material; the wavelength conversion material is irradiated by the incident excitation light to excite excited light, and the excited light exits from the first surface; the emission mode of the excited light comprises: one path of the excited light is emitted through the first surface, and the other path of the excited light is emitted through the first surface after being reflected by the second surface.
In a second aspect, embodiments of the present application provide a light source device, including: a wavelength conversion device and at least one light source.
The application provides a wavelength conversion device and light source device, wavelength conversion device includes: a first face and at least two second faces, each of the at least two second faces having a wavelength converting material; the wavelength conversion material is irradiated by the incident excitation light to excite excited light, and the excited light exits from the first surface; the emission mode of the excited light comprises: one path of the excited light is emitted through the first surface, and the other path of the excited light is emitted through the first surface after being reflected by the second surface. Thus, when the excited light irradiates the wavelength conversion material to emit excited light, the wavelength conversion material on at least two second faces is excited to emit excited light, but the wavelength conversion material on one second face is not excited to emit excited light, so that the temperature of the wavelength conversion material can be prevented from rising faster, the temperature rising rate of the wavelength conversion material is reduced, and the conversion efficiency of the wavelength conversion material can be improved.
Drawings
Fig. 1 is an optional structural schematic diagram of a wavelength conversion device according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present disclosure;
fig. 11 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present disclosure;
fig. 12 is an alternative structural schematic diagram of a wavelength conversion device provided in an embodiment of the present application;
fig. 13 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present disclosure;
Fig. 14 is a schematic structural diagram of an alternative wavelength conversion device according to an embodiment of the present application.
Detailed Description
For the purposes, technical solutions and advantages of the embodiments of the present application, the specific technical solutions of the embodiments of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are illustrative of the embodiments of the present application, but are not intended to limit the scope of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the present application belong. The terminology used herein in the description of the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The present application is further described in detail below with reference to the accompanying drawings and specific examples.
As shown in fig. 1, an embodiment of the present application provides a light source device 100, where the device 100 includes: a first face 101 and at least two second faces 102, each of the at least two second faces having a wavelength converting material; the wavelength conversion material is irradiated by the incident excitation light to excite excited light, and the excited light exits from the first surface; the emission mode of the excited light comprises: one path of the excited light is emitted through the first surface, and the other path of the excited light is emitted through the first surface after being reflected by the second surface.
Here, as shown in fig. 1, at least two second faces 102 include: a second side 1021 and a second side 1022. The incident excitation light irradiates the wavelength conversion material on the second surface 1021 and the second surface 1022, and then emits excited light, which is emitted through the first surface 101. The second surface may be understood as an incident surface, the first surface may be understood as an exit surface, and the incident excitation light excites the wavelength conversion material on the incident surface to emit excited light, and after the excited light is emitted, the excited light may exit through the exit surface.
In this embodiment of the present application, the emission mode for the excited light includes: one path of excited light is emitted from the first surface, and the other path of excited light is emitted from the first surface after being reflected by the second surface.
As shown in fig. 1, one path of incident excitation light is excited by the wavelength conversion material disposed on the second surface 1021 to emit excited light, all the excited light is emitted through the first surface 101, and the other path of incident excitation light is excited by the wavelength conversion material disposed on the second surface 1022 to emit excited light, and is reflected by the second surface 1021 to be emitted through the first surface 101. Therefore, the wavelength conversion material is excited from two directions, so that the saturation of the efficiency of the wavelength conversion material caused by the overhigh power density on the wavelength conversion material can be avoided, and the light efficiency of the system is improved. Further, the excitation light passing through the second surface 1022 comprises all excitation and partial excitation, and the residual excitation light in the case of partial excitation is reflected and emitted after being excited by the second surface 1021, so that the full utilization of the excitation light is facilitated, the excitation efficiency is improved, and the light efficiency is further improved; further, the incident light of the second surface 1022 is reflected and emitted by the second surface 1021, the incident light of the second surface 1021 is transmitted and emitted, the area of the incident light of the second surface 1022 reflected by the second surface 1021 and the area of the incident light of the second surface 1021 are staggered, two incident lights can be obtained, the incident lights are incident lights with different wavelengths and the same color, the second surface 1021 is provided with a coating area, wherein a part of the area of the second surface 1021 transmits a set wave band, and a part of the area of the second surface 1021 reflects another set wave band, so that the incident lights with different wavelengths and the same color can be obtained.
Specifically, if the excitation light incident through the second surface 1022 is blue laser light, the wavelength conversion material disposed on the second surface 1022 is green wavelength conversion material, and the color of the excited light is green; if the excitation light incident through the second surface 1021 is blue laser light, the wavelength conversion material provided on the second surface 1021 is red wavelength conversion material, and the color of the excited light is red.
One path of incident excitation light is excited by a wavelength conversion material arranged on the second surface 1021 to emit excited light, part of the excited light is emitted through the first surface 101, the other part of the excited light is emitted through the first surface 101 after being reflected by the second surface 1022, and the other path of incident excitation light is excited by the wavelength conversion material arranged on the second surface 1022 to emit excited light, and the excited light is emitted through the first surface 101 after being reflected by the second surface 1021. Therefore, the part of the excited light after reflection can be mixed with the excited light directly emitted from the first surface, so that the mixed excited light is more biased to sky blue, the visual effect is better, and the user experience can be improved. The defects of human eye injury caused by the partial violet of the picture and the shorter wavelength of the existing blue light which is excited only once are overcome.
Here, after the incident excitation light irradiates the wavelength conversion material on the second surface 1021, the excited light can be emitted, and another part of the residual excited light can be emitted through the first surface 101 after being reflected again by the second surface 1022, so that the excitation light can be fully utilized, and the excitation efficiency can be improved.
In the case where the light source is ultraviolet light, the ultraviolet light may emit blue light of a first wavelength after illuminating the wavelength conversion material on the second surface 1021, and the blue light of the first wavelength may be reflected to the second surface 2022 to be excited again, thereby emitting blue light of a second wavelength. Wherein the second wavelength is a longer wavelength than the first wavelength. Therefore, the method can avoid the picture from being purple, thereby having better visual effect, and also can avoid the defect of human eye injury caused by shorter wavelength, thereby overcoming the defects of the existing picture from being purple and the defect of human eye injury caused by shorter wavelength.
Specifically, if the excitation light incident through 1022 is blue laser, the wavelength conversion material disposed on the second surface 1022 is green, and the color of the excited light is green; if the excitation light incident through the second surface 1021 is blue laser light, the wavelength conversion material provided on the second surface 1021 is red, and the color of the excited light is red.
In some embodiments, the emitting of the excited light through the first surface includes: part of the excited light directly exits through the first surface, and part of the excited light exits through the first surface after being reflected by the second surface; alternatively, the excited light directly exits through the first surface.
In an example, as shown in fig. 1, in a case where a part of the excitation light directly exits through the first surface, and a part of the excitation light exits through the first surface after being reflected by the second surface, after the incident excitation light excites the wavelength conversion material disposed on the second surface 1022 to emit the excited light, a part of the excited light may directly exit through the first surface 101, and another part of the excited light exits through the first surface 101 after being reflected by the second surface 1021.
In another example, as shown in fig. 1, in a case where a part of the excitation light directly exits through the first face, and a part of the excitation light exits through the first face after being reflected by the second face, the incident excitation light may directly exit through the first face 101 after exciting the wavelength conversion material disposed on the second face 1021 to emit the excited light, and another part of the excited light may exit through the first face 101 after being reflected by the second face 1022.
In yet another example, as shown in fig. 1, in the case where the excited light directly exits through the first face, the incident excited light may all directly exit through the first face 101 after exciting the wavelength conversion material disposed on the second face 1021 to emit the excited light.
In this embodiment, after the incident excitation light irradiates the wavelength conversion material disposed on the second surface 1021, a part of the excitation light may be successfully excited, and another part of the excitation light may not be successfully excited, so as to form residual excitation light, and the residual excitation light may be excited through the second surface 1022. Similarly, after the incident excitation light irradiates the wavelength conversion material disposed on the second surface 1022, a portion of the excitation light may be successfully excited, and another portion of the excitation light may not be successfully excited, thereby becoming residual excitation light, which may be excited through the second surface 1021. The proportion of the excitation light that can be successfully excited and the proportion of the residual excitation light that cannot be successfully excited are not limited in any way.
In one example, after the incident excitation light irradiates the wavelength conversion material disposed on the second face 1021, 95% of the excitation light may be successfully excited, and 5% of the excitation light may not be successfully excited, so as to become residual excitation light, and the residual excitation light may be excited through the second face 1022.
In practical applications, 2% to 10% of the excitation light may not be successfully excited to become residual excitation light, which is not limited in any way in the embodiments of the present application.
In an embodiment of the present application, the color of the spectrum in the excited light may include at least one of the following: red and green.
In one example, the colors of the spectrum in the excited light include: and red.
In another example, the color of the spectrum in the excited light includes: green.
In yet another example, the colors of the spectrum in the excited light include: red and green.
In this embodiment, a film layer having a function of transmitting excitation light and reflecting excited light may be plated on each of the at least two second surfaces.
In one example, as shown in fig. 1, the at least two second faces include: the second surface 1021 and the second surface 1022, wherein the second surface 1021 is plated with a first film layer, the second surface 1022 is plated with a second film layer, after the wavelength conversion material on the second surface 1021 is irradiated by the incident excitation light to emit the excited light, the first film layer reflects the excited light emitted by the second surface 1022 to the first surface 101 and emits the excited light through the first surface 101; similarly, after the wavelength conversion material on the second surface 1022 emits the excited light by the incident excitation light, the second film reflects the excited light emitted from the second surface 1021 to the first surface 101, and emits the excited light through the first surface 101.
The embodiment of the application provides a wavelength conversion device, which comprises: a first face and at least two second faces, each of the at least two second faces having a wavelength converting material; the wavelength conversion material is irradiated by the incident excitation light to excite excited light, and the excited light exits from the first surface; the emission mode of the excited light comprises: one path of the excited light is emitted through the first surface, and the other path of the excited light is emitted through the first surface after being reflected by the second surface. Thus, when the excited light irradiates the wavelength conversion material to emit excited light, the wavelength conversion material excited on at least two second faces emits excited light, but not the wavelength conversion material excited on one second face emits excited light, so that the temperature of the wavelength conversion material can be prevented from rising faster, the temperature rising rate of the wavelength conversion material is reduced, and the conversion efficiency of the wavelength conversion material can be improved.
In some embodiments, the state of the wavelength conversion device comprises: a rotational state or a stationary state.
Here, in the case where the wavelength conversion device is in a rotated state, the positions of the first face and the at least two second faces included in the wavelength conversion device change, but the relative positions of the first face and the at least two second faces will remain unchanged.
In this embodiment of the present application, the first motor may drive the wavelength conversion device to rotate.
In one example, the first motor 201 rotates the wavelength conversion device.
In an embodiment of the present application, for each of the at least two second faces, the color of the wavelength conversion material disposed on each second face may include: any one of red R, green G, blue B and yellow Y.
In an example, as shown in fig. 3, a second surface 301, a second surface 302, a second surface 303, a second surface 304, a second surface 305, and a second surface 306 are sequentially provided. Wherein the wavelength converting material coated on the second face 301 is yellow or red in color, and the wavelength converting material coated on the second face 302 is green or yellow in color.
Here, when the color of the wavelength conversion material is yellow or red, the excited light may contain more red light, and the position of the first surface corresponding to the emergent light may be plated with a film layer that transmits red and reflects other colors, so that more vivid red can be obtained, and the color gamut of the light source output is increased. When the wavelength conversion material is green or yellow, the second surface may be coated with a film layer that transmits green and reflects other colors at the position corresponding to the emitted light, so that a more vivid green color may be obtained. When the wavelength conversion material is blue, the second surface may be coated with a material such as green powder, or the second surface may not be coated with a material such as clear powder, which is not limited in this embodiment. When the green powder is coated on the second surface, the wavelength of the blue light wave band can be changed, so that the phenomenon of over-violet blue light in the projection light source is avoided, and when the green powder is not coated on the emergent surface, the excited light can be directly transmitted from the second surface.
In some embodiments, the wavelength converting materials are symmetrically arranged along the circumferential direction.
In one example, as shown in fig. 3, the blue wavelength converting materials are symmetrically arranged in a circumferential direction, e.g., clockwise.
In some embodiments, the wavelength conversion material comprises at least one of a fluorescent material, a ceramic fluorescent sheet, a glass fluorescent sheet.
In one example, the wavelength conversion material includes: fluorescent material.
In another example, a wavelength conversion material includes: ceramic fluorescence piece.
In yet another example, the wavelength conversion material includes: and (5) a glass fluorescent sheet.
In yet another example, the wavelength conversion material includes: fluorescent materials and ceramic fluorescent sheets.
In some embodiments, the wavelength conversion material is disposed on a thermally conductive substrate, the second face being disposed on the thermally conductive substrate; the material of the heat conducting substrate comprises: transparent heat conductive material.
Here, the material of the heat conductive substrate may further include: high temperature resistant materials.
The transparent thermally conductive material may include at least one of: silicon carbide (SiC), aluminum nitride (AIN), silicon nitride (SiN), diamond. Wherein for SiC, it may include: silicon carbide crystals, silicon carbide ceramics, for AIN, may include: aluminum nitride crystal, aluminum nitride ceramic, silicon nitride crystal, and silicon nitride ceramic.
Among these, for materials of silicon carbide, aluminum nitride, silicon nitride, may include: at least one of monocrystalline material, polycrystalline material, and ceramic.
For diamond materials, this may include: at least one of monocrystalline material and polycrystalline material.
In some embodiments, the wavelength conversion device further comprises: and a first filter member provided on the first surface, the first filter member being configured to filter the excited light passing through the first surface.
In some embodiments, the first filter element comprises at least one of: coating and filtering.
In one example, the first filter component includes: and (5) coating.
In another example, the first filter component includes: an optical filter.
In yet another example, the first filter component includes: coating and optical filter.
In some embodiments, the wavelength conversion device further comprises: the first light homogenizing device is arranged below the first filtering component and is used for homogenizing the excited light filtered by the first filtering component.
In an example, as shown in fig. 4, the wavelength conversion device further includes: a first light homogenizing device 401.
In some embodiments, the first light homogenizing device may include at least one of: light stick and compound eye.
In an example, the first light homogenizing device includes: and (3) a light bar.
In another example, a first light homogenizing device includes: and (5) compound eyes.
In yet another example, the first light homogenizing device includes: optical wand and compound eye.
In some embodiments, the wavelength conversion device further comprises: and the second filter component is arranged on the first surface in an extending way and is used for filtering the excited light.
In an example, as shown in fig. 5, the wavelength conversion device further includes: a second filter member 501 is provided to extend on the first surface 101.
In some embodiments, the second filter element comprises: an optical filter.
In some embodiments, the wavelength conversion device further comprises: and the light reflecting device is used for reflecting the excited light.
In an example, as shown in fig. 6, the wavelength conversion device 100 further includes: a light reflecting means 601.
Here, the embodiment of the present application does not limit this in any way with respect to the number of light reflecting means. For example, as shown in fig. 6, the number of the light reflecting devices is 2.
In some embodiments, the wavelength conversion device further comprises: the second light homogenizing device is arranged above the second filtering component and is used for homogenizing the excited light reflected by the reflecting device.
In an example, as shown in fig. 7, the wavelength conversion device further includes: a second light homogenizing device 701.
In some embodiments, the second light homogenizing device comprises at least one of: light stick and compound eye.
In some embodiments, the wavelength conversion device further comprises: the device comprises at least one light source and at least one focusing lens group for shaping the light beam of the at least one light source, wherein each light source in the at least one light source corresponds to one focusing lens group.
In an example, as shown in fig. 8, the wavelength conversion device 100 further includes: at least one light source 801, and at least one focusing optic set 802 that beam-shapes the at least one light source 103.
Here, the at least one light source may include one light source, or may be other number of light sources, for example, two or more light sources, which is not limited in any way in the embodiment of the present application.
In an example, as shown in fig. 8, for the case where at least one light source includes two light sources, at least one light source 801 includes: a light source 801a and a light source 801b.
The at least one focusing lens group may include one focusing lens group, or may be other number of focusing lens groups, such as two or more focusing lens groups, which is not limited in any way in the embodiments of the present application.
Here, for each focusing lens group, one focusing lens may be included in the focusing lens group, or two or more focusing lenses may be included, which is not limited in any way in the embodiment of the present application.
For a light source, the types of light source may include: one or more of blue laser, ultraviolet Light, and Light-emitting Diode (LED). Wherein, the light emitted by the light source can be light with color, and the color of the light can comprise: blue, violet, etc., the color of the light emitted by the light source in the embodiments of the present application is not limited in any way.
In the embodiment of the present application, in the case where the number of light sources is 2 or more, that is, at least two light sources, the types of the light sources included in the at least two light sources may be one or more.
In one example, the wavelength conversion device includes a light source, and the light source is a blue laser.
In another example, the wavelength conversion device includes two light sources, and the two light sources are respectively: blue laser light and ultraviolet light.
Here, in the case where the wavelength conversion device includes a plurality of light sources, each of the plurality of light sources may be the same or different, and the embodiment of the present application is not limited in any way.
In an example, the wavelength conversion device comprises two light sources 801a and 801b, wherein the light sources 801a and 801b may be the same excitation light source.
In another example, the wavelength conversion device includes two light sources 801a and 801b, wherein the light source 801a is a blue laser and the light source 801b may be a different light source than an excitation light source, such as: an LED.
Here, each of the at least one light source may emit excitation light to irradiate the wavelength conversion material disposed on the second face, thereby emitting excited light.
In this embodiment of the present application, the light sources that excite the wavelength conversion materials on the different second surfaces may be the same light source or different light sources, which is not limited in any way.
In an example, where there are two second faces, the wavelength converting materials on both second faces are excited by the same light source.
In another example, where there are three second faces, the wavelength converting materials on different second faces may be excited by different light sources.
In the embodiment of the present application, the number of the second faces and the number of the light sources in the wavelength conversion device are not limited in any way.
In this embodiment, the light rays of the different second faces can be directly or indirectly emitted to the first face at the same time. The light of the second surface is directly emitted to the first surface, which is understood as that the first surface is located in the emitting direction of the light of the excited light emitted by the second surface, and at this time, the light of the excited light emitted by the second surface is directly irradiated on the first surface. The indirect emission of the light of the second surface to the first surface is understood to mean that the first surface is not located in the emission direction of the light of the excited light emitted by the second surface, and needs to be reflected to the first surface by means of a reflecting surface that reflects the excited light. In the case that the light of the second surface is indirectly emitted to the first surface, the first surface may be a reflective layer for the excited light surface, or may be another second surface. When the second surface can reflect the excited light, it has a semi-transmission function, that is, can transmit the light emitted from the light source, and can reflect the excited light emitted from the other second surface.
In an example, as shown in fig. 1, the second surface 1021 and the second surface 1022 emit the excited light emitted by the excitation of the light source through the first surface 101, and an included angle between the second surface 1021 and the second surface 1022 may be a first included angle, and the first included angle ranges from 0 degrees to 90 degrees, preferably 45 degrees. Thus, since the included angle between the at least two second surfaces is 0 to 90 degrees, the excited light emitted from the at least two second surfaces can be emitted through the first surface after the light source excites the wavelength conversion material arranged on the at least two second surfaces to emit the excited light.
In this embodiment of the present application, the at least two second faces include: the first phosphor screen and the second phosphor screen, the wavelength conversion device further includes: the first lens is arranged between a first light source and the first fluorescent surface, the second lens is arranged at a position corresponding to the second fluorescent surface, and the first light source is a light source corresponding to the first fluorescent surface;
the first lens is used for transmitting the light rays emitted by the first light source to the first fluorescent surface and reflecting the light rays emitted by the first light source to the second lens;
the second lens is used for reflecting the light rays reflected by the first lens to the second fluorescent surface.
In one example, as shown in fig. 9, the at least two second faces include: a first fluorescent surface 1021 and a second fluorescent surface 1022, wherein the first light source is a light source 801a corresponding to the first fluorescent surface 1021, and the apparatus 100 further comprises: a first lens 901 and a second lens 902, the second lens 902 comprising: a second lens 9021 and a second lens 9022, wherein the first lens 901 is disposed between the first light source 801a and the first fluorescent surface 1021, and the second lens 902 is disposed at a position corresponding to the second fluorescent surface 1022. After the light emitted by the first light source 801a irradiates the first lens 901, a part of the light will be transmitted to the first fluorescent surface 1021, another part of the light will be reflected to the second lens 902, and the second lens 902 reflects the light reflected by the first lens 901 to the second fluorescent surface 1022, where after another part of the light is reflected to the second lens 902, the reflected light will sequentially pass through the second lens 9021 and the second lens 9022 to be reflected, so that the reflected light irradiates the second fluorescent surface 1022.
Here, the number of the second lenses may be set according to actual requirements, and the embodiment of the present application is not limited in any way.
The placement positions of the first lens, the second lens, and the focusing lens group shown in fig. 9 are only examples, and may be set according to actual use requirements in practical applications.
In this embodiment of the present application, as shown in fig. 10, the wavelength conversion device further includes: the color wheel 1001 filters excited light emitted from the first surface 101 when the color wheel 1001 rotates.
In this embodiment of the present application, as shown in fig. 11, the wavelength conversion device further includes: and a second motor 1101 for driving the color wheel to rotate.
The embodiment of the application provides a light source device, which comprises: a wavelength conversion device and at least one light source.
In some embodiments, each of the at least one light source comprises one or more of: blue laser, ultraviolet light and light emitting diodes.
In one example, a light source includes: blue laser.
In another example, a light source includes: blue laser light and ultraviolet light.
In yet another example, a light source includes: blue laser, ultraviolet light and light emitting diodes.
The embodiment of the application provides a projection method, which is applied to a light source device, wherein the light source device comprises: a wavelength conversion device;
irradiating the wavelength conversion materials on at least two second faces with incident excitation light to excite excited light;
the excited light exits through the first face.
In the related art, a transmissive fluorescent wheel provided in a projector is inferior in temperature resistance, and at the same time, phosphor is easily saturated after the temperature is too high, which easily causes a problem of reduced efficiency gain. Here, the phosphor may be understood as the wavelength conversion material described in the above embodiments.
The embodiment of the application provides a wavelength conversion device, which can excite fluorescent powder coated on a transmission type fluorescent wheel from a plurality of surfaces, so that the temperature rising speed of the fluorescent powder can be reduced, and the heat dissipation pressure of the fluorescent wheel is reduced.
As shown in fig. 12, 1 and 4 are excitation light sources, preferably blue lasers, and may be blue LEDs, which are not limited in this embodiment of the present application.
2. 3, 5, 6, 8 and 9 are focusing lenses, which can focus and shape the laser emitted by the excitation light source.
Here, the focus lens is the focus lens provided in the focus lens group described in the above embodiment.
And 7, a transmission type fluorescent wheel, wherein fluorescent powder is coated on the transmission type fluorescent wheel, and the fluorescent powder can excite fluorescence after receiving laser emitted by an excitation light source.
Here, the transmissive fluorescent wheel is the wavelength conversion device described in the above embodiment.
And 10 is a color filter color wheel, and the color filter color wheel can filter fluorescence to obtain a vivid color.
And 11 is a light bar, and light can be homogenized.
The transmissive fluorescent wheel is explained in detail below.
As shown in fig. 13, 71 denotes an incident surface, and the material of the incident surface may include: light-transmitting and high-heat-conductivity, high-temperature-resistant materials, such as: sapphire.
An antireflection film or a blue-transparent and anti-fluorescent film may be coated on the incident surface.
And 72, a fluorescent powder device is arranged at the side edge of the fluorescent wheel, fluorescent powder can be arranged at the inner side of the fluorescent wheel, and a blue-transparent anti-fluorescence film can be plated at the outer side of the fluorescent wheel close to the air surface. Wherein, the materials of the fluorescent powder device can comprise: fluorescent ceramics, or sapphire.
And 73, an emission surface, on which an antireflection film may be coated, so that both blue light and fluorescence can be transmitted.
Here, the exit face is the second face described in the above embodiment.
The phosphor device is shown at 74 and disposed on the inclined surface, and phosphor may be disposed on the inner side of the surface near 73, and a blue-transparent anti-fluorescent film may be coated on the side near 71.
The whole fluorescent wheel can be fixed by pressing, pasting, mechanical and other modes of the motor metal part.
The fluorescent wheel can be provided with different partitions, the same fluorescent powder is arranged on 72 and 74, red powder, yellow powder, green powder or a direct blue light transmission section can be arranged according to the requirement, and the partitions can be arranged into 3 sections, 4 sections, 6 sections or 8 sections.
The projection method provided in the embodiment of the present application will be described in detail below based on fig. 13.
The blue laser source 1 irradiates the transmission type fluorescent wheel 7 after being focused by the focusing lenses 2 and 3, and the surface of the excited fluorescent powder 74 and 71 can transmit blue and reflect fluorescence, and meanwhile, the blue laser source 4 irradiates the transmission type fluorescent wheel 7 after being focused by the focusing lenses 5 and 6, and excites the fluorescent powder 72, and the fluorescent powder is reflected by the inclined surface 74 and then is emitted from the fluorescent wheel 73, so that fluorescence is obtained.
The transmissive fluorescent wheel 7 is a rotating body, and corresponds to different partitions at different times, and when corresponding to a red powder region, 72 and 74 are red fluorescent powder or yellow fluorescent powder, and when corresponding to a green region, 72 and 74 are green fluorescent powder.
The embodiment of the application also provides a light source device, as shown in fig. 14, 1 is an excitation light source, 2, 3, 9, 11, 12 and 14 are focusing lenses, and 4, 8 and 10 are semi-transparent and semi-reflective lenses. The semi-transparent and semi-reflective lens is the second lens described in the above embodiments.
It should be noted that, the data processing system provided in the embodiment of the present application includes each logic unit, which may be implemented by a processor in an electronic device; of course, the method can also be realized by a specific logic circuit; in practice, the processor may be a central processing unit (CPU, central Processing Unit), a microprocessor (MPU, micro Processor Unit), a digital signal processor (DSP, digital Signal Processor) or a Field programmable gate array (FPGA, field-Programmable Gate Array), or the like.
The description of the system embodiments above is similar to that of the method embodiments above, with similar benefits as the method embodiments. For technical details not disclosed in the system embodiments of the present application, please refer to the description of the method embodiments of the present application for understanding.
It should be noted that, in the embodiment of the present application, if the above-mentioned page display method is implemented in the form of a software function module, and sold or used as a separate product, the page display method may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributing to the related art, and the computer software product may be stored in a storage medium, and include several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, an optical disk, or other various media capable of storing program codes. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.
The embodiment of the application also provides electronic equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the projection method is realized when the processor executes the computer program.
Accordingly, embodiments of the present application provide a storage medium, that is, a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the projection method provided in the above embodiments.
It should be noted here that: the description of the storage medium embodiments above is similar to that of the method embodiments described above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the storage medium embodiments of the present application, please refer to the description of the method embodiments of the present application for understanding.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read Only Memory (ROM), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the integrated units described above may be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributing to the related art, and the computer software product may be stored in a storage medium, and include several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a removable storage device, a ROM, a magnetic disk, or an optical disk.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application. The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read Only Memory (ROM), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the integrated units described above may be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributing to the related art, and the computer software product may be stored in a storage medium, and include several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a removable storage device, a ROM, a magnetic disk, or an optical disk.
The foregoing is merely an embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (14)
1. A wavelength conversion device, the device comprising: a first face and at least two second faces, each of the at least two second faces having a wavelength converting material; the wavelength conversion material is irradiated by the incident excitation light to excite excited light, and the excited light exits from the first surface; the emission mode of the excited light comprises: one path of the excited light is emitted through the first surface, and the other path of the excited light is emitted through the first surface after being reflected by the second surface.
2. The wavelength conversion device according to claim 1, wherein the state of the wavelength conversion device comprises: a rotational state or a stationary state.
3. The wavelength conversion device according to claim 1, wherein one of the excited light exits through the first face comprises: part of the excited light directly exits through the first surface, and part of the excited light exits through the first surface after being reflected by the second surface; alternatively, the excited light directly exits through the first surface.
4. The wavelength conversion device according to claim 1, wherein the wavelength conversion materials are symmetrically arranged in a circumferential direction.
5. The wavelength conversion device according to claim 1, wherein the wavelength conversion material comprises at least one of: fluorescent material, ceramic fluorescent sheet, glass fluorescent sheet.
6. The wavelength conversion device according to claim 1, wherein the wavelength conversion material is disposed on a thermally conductive substrate, and the second face is disposed on the thermally conductive substrate; the material of the heat conducting substrate comprises: transparent heat conductive material.
7. The wavelength conversion device according to claim 1, further comprising: and a first filter member provided on the first surface, the first filter member being configured to filter the excited light passing through the first surface.
8. The wavelength conversion device of claim 7, further comprising: the first light homogenizing device is arranged below the first filtering component and is used for homogenizing the excited light filtered by the first filtering component.
9. The wavelength conversion device according to claim 1, further comprising: and the second filter component is arranged on the first surface in an extending way and is used for filtering the excited light.
10. The wavelength conversion device according to claim 9, further comprising: and the light reflecting device is used for reflecting the excited light.
11. The wavelength conversion device according to claim 10, further comprising: the second light homogenizing device is arranged above the second filtering component and is used for homogenizing the excited light reflected by the reflecting device.
12. The wavelength conversion device according to claim 1, further comprising: the device comprises at least one light source and at least one focusing lens group for shaping the light beam of the at least one light source, wherein each light source in the at least one light source corresponds to one focusing lens group.
13. A light source device, characterized in that the light source device comprises: the wavelength conversion device according to any one of claims 1 to 12 and at least one light source.
14. A light source device as recited in claim 13, wherein each of said at least one light source comprises one or more of: blue laser, ultraviolet light and light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087927.8A CN116540398A (en) | 2022-01-25 | 2022-01-25 | Wavelength conversion device and light source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087927.8A CN116540398A (en) | 2022-01-25 | 2022-01-25 | Wavelength conversion device and light source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116540398A true CN116540398A (en) | 2023-08-04 |
Family
ID=87452949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210087927.8A Pending CN116540398A (en) | 2022-01-25 | 2022-01-25 | Wavelength conversion device and light source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116540398A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890397A (en) * | 2012-07-31 | 2013-01-23 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and projection system |
| US20190179220A1 (en) * | 2016-08-09 | 2019-06-13 | Appotronics Corporation Limited | Light-source system and projection device |
| CN110716380A (en) * | 2019-11-25 | 2020-01-21 | 成都极米科技股份有限公司 | Light source system and projector |
| CN210323743U (en) * | 2019-09-30 | 2020-04-14 | 无锡视美乐激光显示科技有限公司 | Light source device and projection system |
-
2022
- 2022-01-25 CN CN202210087927.8A patent/CN116540398A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890397A (en) * | 2012-07-31 | 2013-01-23 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and projection system |
| US20190179220A1 (en) * | 2016-08-09 | 2019-06-13 | Appotronics Corporation Limited | Light-source system and projection device |
| CN210323743U (en) * | 2019-09-30 | 2020-04-14 | 无锡视美乐激光显示科技有限公司 | Light source device and projection system |
| CN110716380A (en) * | 2019-11-25 | 2020-01-21 | 成都极米科技股份有限公司 | Light source system and projector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101973262B1 (en) | Light source device and image display apparatus | |
| CN108803213B (en) | Wavelength conversion filter module and lighting system | |
| US20170351166A1 (en) | Device for converting wavelength and projection light source | |
| CN208937894U (en) | Wavelength converter and projection arrangement | |
| JP2014142369A (en) | Illumination optical system and electronic apparatus using the same | |
| JP2019528482A (en) | Laser LED hybrid light source for projection display | |
| KR20210041539A (en) | Specular color correction for phosphor lighting systems | |
| CN210072201U (en) | Wavelength conversion module and projection device | |
| CN104345535B (en) | LASER Light Source and projection arrangement | |
| TWI634380B (en) | Color wheel module and light source module | |
| CN112236706B (en) | Efficient and uniform laser excitation type white light generator | |
| CN110887022A (en) | Wavelength conversion device and light source system | |
| US11713864B2 (en) | Light source system | |
| KR20120106473A (en) | Lighting apparatus using laser | |
| CN111007688B (en) | Light source device | |
| JP5469014B2 (en) | Projection display | |
| CN116540398A (en) | Wavelength conversion device and light source device | |
| CN111198475A (en) | Blue light generation method and illumination system | |
| JP2007258466A (en) | Illuminating device, and light-emitting device | |
| CN110865502A (en) | Laser light source device and laser projection system | |
| CN111679424B (en) | Wavelength conversion device and light source equipment | |
| CN112731747A (en) | Wavelength conversion device, light source system and projection device | |
| JP5491571B2 (en) | Projection display | |
| CN219936274U (en) | Light source system and projection equipment | |
| CN112051702B (en) | Light source assembly, light-emitting device and projection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |