CN110554533A - Dodging device and light-emitting equipment comprising same - Google Patents
Dodging device and light-emitting equipment comprising same Download PDFInfo
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- CN110554533A CN110554533A CN201810554757.3A CN201810554757A CN110554533A CN 110554533 A CN110554533 A CN 110554533A CN 201810554757 A CN201810554757 A CN 201810554757A CN 110554533 A CN110554533 A CN 110554533A
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0944—Diffractive optical elements, e.g. gratings, holograms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1086—Beam splitting or combining systems operating by diffraction only
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
Abstract
the invention discloses a light homogenizing device and a light-emitting device comprising the same. According to the light homogenizing device, when light emitted by the light source passes through the light splitting layer, wavefront conversion occurs, and the emergent angle of the light is changed to enable the light to be scattered; when the emergent light passes through the light homogenizing sheet, the light is further scattered, and light distribution with extremely high uniformity is obtained; finally, the uniform light excites the fluorescent material or quantum dots, changing and broadening the illumination spectrum, forming uniform visible light.
Description
Technical Field
The invention relates to a light homogenizing device and light emitting equipment comprising the same, and belongs to the field of light sources.
Background
The backlight is a light source device for illuminating a passive light emitting display device such as a liquid crystal display. The backlight plate has the advantages of high light utilization efficiency, high uniformity, low power consumption, light weight and easy integration. The backlight plate is combined with a liquid crystal screen, is applied to illumination or photographic equipment such as a digital camera and the like, automobile instrument panels, navigation instruments, electric toys, notebook computer display screens, lamp devices, scanners and the like, and brings great convenience to life of people.
The backlight plate is generally composed of a light source, a light guide plate, an optical film, and the like; the light guide plate is made of optical acrylic/PC plates, and then materials with extremely high reflectivity and no light absorption are used for printing light guide points on the bottom surface of the optical acrylic plates by using laser engraving, V-shaped cross grid engraving and UV screen printing technologies. The optical-grade acrylic sheet is used for absorbing the light emitted from the lamp to stay on the surface of the optical-grade acrylic sheet, when the light irradiates each light guide point, the reflected light can be diffused towards each angle, and then the reflected light is damaged and is emitted from the front surface of the light guide plate. The light guide plate can uniformly emit light through various light guide points with different densities and sizes. The reflecting sheet is used for reflecting the light with the bottom surface exposed back to the light guide plate so as to improve the use efficiency of the light.
Due to the wide application of light guide plates, numerous researchers have made many innovations and attempts to design them, and further improvement of uniformity and utilization efficiency is desired. Patent 201510198194.5 proposes designing two orientations of V-grooves in the reflector layer and improving the uniformity of the light output by changing the area ratio of the V-grooves parallel to the incident plane to the V-grooves perpendicular to the incident plane. Patent 201521088224.9 proposes to design circular convex strips and transition circular arc surfaces on the light exit surface to improve the uniformity and brightness of the light exit. Patent 201621198948.3 proposes to lay cylinder type punctiform structural layer at the light guide plate internal layer, and the bar structural layer is laid to the extexine, extrudes integratively through three-layer crowded equipment altogether with leaded light substrate three, constitutes a novel light guide plate. The light guide plate also improves the light emitting efficiency and the uniformity to a certain extent. As shown in fig. 1-2, which is a schematic structural diagram of a typical light guide plate in the prior art, light emitted from LED light bars is irradiated to the light guide plate, and since light guide points printed by laser engraving, V-shaped cross grid engraving, and UV screen printing techniques are distributed on the bottom surface of the light guide plate, when incident light is irradiated to the light guide points, the reflection conditions are destroyed, and thus, the reflected light is diffused at various angles and emitted from the front surface of the light guide plate. The light guide plate can uniformly emit light through various light guide points with different densities and sizes. The device can not control the on-off and brightness of local light, and the brightness uniformity can not be obviously improved.
Obviously, the light guide plate structures emit light passively, and brightness change of a certain area cannot be actively controlled or adjusted; meanwhile, the surface structure of the light guide layer generally adopts a dot matrix or a grid formed by silk screen printing, and the structure usually has the phenomenon of ink falling, is difficult to store and has short service life; the lattice or grid structure itself limits further improvement of the light extraction efficiency and the brightness uniformity to some extent.
In order to reach the high brightness uniformity in practical application, the local brightness is controllable and adjustable, and the service life is long, the application provides a novel dodging device.
Disclosure of Invention
the invention aims to provide a light homogenizing device and a light emitting device comprising the light homogenizing device, so that uniform light can be emitted through adjustment of a light splitting layer and a spectrum modulation layer, and the actual requirement is met.
the term "led (light Emitting diode)" herein means "light Emitting diode" unless otherwise specified.
"doe (differential Optical elements)" herein means "diffractive Optical elements, generally defined as a type of Optical elements that are formed by etching a relief structure with two or more step depths on the surface of a substrate or a conventional Optical device to form a phase-only, in-line reproduction, and with extremely high diffraction efficiency based on the theory of light wave diffraction, using computer-aided design, and using a very large scale integrated circuit fabrication process".
Unless specifically indicated herein "fluorescence" is "a type of photoluminescence, a substance that absorbs electromagnetic radiation (light) and emits new electromagnetic radiation (light)".
The "light uniformizing plate" herein can convert a point light source or a line light source into a surface light source, similarly to the "light guide plate", unless otherwise specified.
Unless specifically indicated, the term "quantum dot" as used herein refers to a nano-scale semiconductor that emits light of a specific frequency by applying a certain electric field or light pressure to the nano-semiconductor material, and the frequency of the emitted light varies with the size of the nano-semiconductor.
In order to achieve the purpose, the invention provides the following technical scheme:
In one aspect, the present invention provides a light uniformizing device, which includes a light splitting layer and a broadened spectrum layer, wherein light emitted from a light source is scattered by the light splitting layer, and modulated and broadened by the broadened spectrum layer.
Further, the light splitting layer is a diffractive optical element.
Furthermore, a light splitting structure is arranged on the diffraction optical element.
Further, the light splitting structure is a micro-nano structure.
Further, the arrangement structure of the light splitting structure is pixel type, distributed all over, distributed evenly along the periphery of the diffraction optical element or distributed in a local part of the diffraction optical element.
Further, when the light splitting structure is locally distributed on the diffractive optical element, the locally distributed structure is wholly in a ring shape or a square shape.
Further, a light homogenizing sheet is arranged between the light splitting layer and the spectrum modulation layer and used for scattering light emitted from the light splitting layer.
Further, the spectrum modulation layer is a fluorescent layer or a quantum dot layer.
In another aspect, the present invention also provides a light emitting apparatus, which includes a light source and the light uniformizing device as described above.
Further, the light source is an active light source, and the active light source is an LED light source.
The invention has the beneficial effects that: when light passes through the light splitting layer, wave front conversion is generated, one part of light directly penetrates through the light splitting layer, and the other part of light is diffracted through the diffraction element to scatter the light, so that the emergent angle of the light is changed to scatter the light; when the emergent light passes through the light homogenizing sheet, the light is further scattered, and light distribution with extremely high uniformity is obtained; finally, the uniform light excites the fluorescent substance or quantum dots, changes (modulates) and broadens the illumination spectrum to form uniform visible light; the light emitted by the light uniformizing device has the remarkable technical advantages of high brightness uniformity, controllable and adjustable local light and brightness, long service life, environmental protection, energy conservation and the like, is easy to realize industrialization, can bring revolutionary change to the whole industry, and has extremely high economic value and social value.
In addition, the light-emitting device utilizes the LED array light source to emit light actively, and the extremely high brightness uniformity of the light is ensured through the light scattering of the designed DOE; the LED lamp can actively emit light, adjust the brightness and the brightness of a designated area, greatly improve the brightness uniformity, protect the environment, save the energy and prolong the service life.
In addition, the diffraction optical element and the light homogenizing sheet can be industrially produced by the existing nano-imprinting technology, the manufacturing process is mature, the product consistency is easy to guarantee, the price is controllable, and the cost is low.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
drawings
FIG. 1 is a schematic view of a typical light guide plate in the prior art;
FIG. 2 is a light traveling diagram of the light guide plate of FIG. 1;
FIG. 3 is a schematic structural diagram of a light uniformizing apparatus according to the present invention;
FIG. 4 is a perspective view of the light unifying apparatus in FIG. 3;
FIG. 5 is a schematic structural diagram of a local light switch controlled by the dodging device according to the present invention;
FIG. 6 is a schematic view of the structure of the light homogenizing device of the present invention for adjusting the local light intensity;
FIG. 7a is a schematic structural diagram of a diffractive optical element in a light uniformizing device according to the present invention;
FIG. 7b is a schematic structural diagram of the diffractive optical element in the light uniformizing device of the present invention in a distributed manner;
Fig. 8a is a schematic structural view when the light uniformizing structures of the diffractive optical element in the light uniformizing device of embodiment 1 of the invention are uniformly distributed along the periphery of the diffractive optical element;
FIG. 8b is a light field distribution diagram of the dodging device of FIG. 8a when light emitted from a single LED passes through the diffractive optical element;
FIG. 8c is a light ray tracing diagram of the light unifying apparatus in FIG. 8 a;
FIG. 9a is a schematic structural diagram of the diffractive optical element when the local distribution structure of the diffractive optical element in the light uniformizing device of embodiment 2 of the invention is annular as a whole;
FIG. 9b is a light field distribution diagram of the dodging device of FIG. 9a when light emitted from a single LED passes through the diffractive optical element;
FIG. 9c is a light ray tracing diagram of the light unifying apparatus in FIG. 9 a;
FIG. 10a is a schematic structural view of the diffractive optical element when the local distribution structure of the diffractive optical element in the light unifying apparatus according to embodiment 3 of the present invention is square as a whole;
FIG. 10b is a light field distribution diagram of the dodging device of FIG. 10a when light emitted from a single LED passes through the diffractive optical element;
FIG. 10c is a light ray tracing diagram of the light unifying apparatus in FIG. 10 a;
Wherein: 1. the light source comprises an active light emitting source, 2, a diffraction optical element, 201, a light splitting structure, 3, a spectrum modulation layer and 4, a light homogenizing sheet.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 3-4, a light uniformizing device according to an embodiment of the present invention includes a light splitting layer and a spectrum modulation layer 3, wherein light emitted from a light source is scattered by the light splitting layer, and then modulated and spectrum-broadened by the spectrum modulation layer 3. In specific implementation, the light splitting layer can be a diffractive optical element 2, the diffractive optical element 2 can be any relief structure with two or more step depths, and the spectrum modulation layer 3 can be a fluorescent layer or a quantum dot layer; the spectral modulation layer 3 is preferably a quantum dot layer so that when light is absorbed, light of a specific frequency range is emitted, the frequency of the emitted light varying with the change in the size of the nano-semiconductor.
In the above embodiment, even light piece 4 is still equipped with between diffractive optical element 2 and the spectrum modulation layer 3, even light piece 4 is used for the light scattering that will send from diffractive optical element 2, make the more even ejection of light, when the light that the whole or partial light source of LED light source sent passes through the DOE that has designed, carry out the even light of first time through the wavefront conversion of DOE, the even light of second takes place when the light of outgoing passes through even light piece 4, its light is fully scattered to two-layer even light structure assurance, realize high luminance uniformity and distribute. In specific implementation, the light uniformizing sheet 4 may be any object with rough surface structure such as ground glass or microstructure on the surface, which can scatter light.
The light emitting device of the embodiment of the invention comprises the light uniformizing device and a light source, wherein the light source can be an active light emitting source 1, and in the specific implementation, the active light emitting source 1 can be an LED light source.
In the above embodiment, the LED light source 1 is an LED array, and each LED independently controls a switch, so that the LED light source 1 can be locally regulated and controlled, and the light emitted finally can be controlled and regulated, and the brightness of the light can meet the user requirements, specifically, the switch and the brightness of the LED can be controlled and regulated in any designated area, and since the LED is independently controlled to be turned on only when the light is needed in some areas, the light cannot be obtained in other places where the light is not needed, and the brightness of the light can be regulated to enable the light to emit different brightness required by the user; in addition, the service life of the LED can reach 10 ten thousand hours, no harmful metal is contained, and the price is civilian, so the light-emitting device has the advantages of long service life, environmental protection, energy conservation, low cost and the like. As shown in fig. 5, the LED array light source contains 9 LEDs, and each LED can be independently controlled to be switched on and off. When only certain areas are required, such as only light at the eye shown, 3 LEDs numbered a can be turned on while the rest are turned off, and uniform illumination can be obtained at the eye when the light of the LED numbered a passes through the DOE, the dodging sheet 4, the spectral modulation layer 3 (fluorescent layer or quantum dot layer) in sequence. While other places where light is not needed do not get light. As shown in fig. 6, a light uniformizing apparatus of an array light source of LEDs is explained. The LED array light source comprises 9 LEDs, and the brightness of each LED can be independently adjusted. When the brightness of some regions needs to be adjusted, the LEDs in the corresponding regions can be adjusted, for example, the LEDs numbered a and b (please confirm) are dimmed, and the LEDs numbered c are brightened, so that when the light passes through the DOE, the light homogenizing sheet 4, and the spectrum modulation layer 3 (fluorescent layer or quantum dot layer) in sequence, uniform illumination with different brightness can be obtained in the corresponding regions.
In the above embodiment, the diffractive optical element 2 is provided with the light splitting structure 201, the light splitting structure may be a micro-nano structure, the arrangement structure of the light splitting structure 201 may be in a pixel type, a distribution type, and a uniform distribution along the periphery of the diffractive optical element 2, or a partial distribution structure in the diffractive optical element 2, and the specific structural shape of the light splitting structure 201 is designed according to the required visible light, so that the light source forms the required visible light through the light uniformizing device, and the brightness uniformity is large.
As shown in fig. 7a, the arrangement structure of the light splitting structure 201 is pixel-type, and each pixel-type DOE corresponds to one LED; as shown in fig. 7b, the arrangement of the light splitting structure 201 is distributed throughout, and the whole DOE is covered with the required structure.
In the above-described embodiment, when the light splitting structure 201 is locally distributed on the diffractive optical element 2, the locally distributed structure is entirely in a ring shape or a square shape.
in the above embodiment, the light emitted from the LED light source 1 is light in an ultraviolet band, and the light in the ultraviolet band is uniformly scattered by the diffractive optical element and the light-homogenizing sheet in sequence, and then enters the spectrum modulation layer to emit uniform white light.
In the above embodiment, the diffractive optical element 2, the dodging sheet 4, and the spectrum modulation layer 3 are sequentially disposed in parallel on the LED light source 1.
Example 1
the light splitting structures 201 in the light uniformizing device of the present embodiment are uniformly distributed along the periphery of the diffractive optical element, as shown in fig. 8a-c, specifically, the light field is designed as 8 surrounding bright spots for explanation. Light emitted by the LED is scattered into 8 bright spots and a plurality of bright spots with low brightness after passing through the designed diffractive optical element 2; the bright spots are further scattered after being incident on the light uniformizing sheet 4 to form illumination with extremely high brightness uniformity; finally, the light passes through the phosphor or quantum dots, modulating and broadening the illumination spectrum to form the desired visible light.
Example 2
The local distribution structure in the light uniformizing device of the present embodiment is annular as a whole, and as shown in fig. 9a-c, the light emitted from the LED light source is scattered into annular light after passing through the designed diffractive optical element 2; the light rays are further scattered after being incident to the light uniformizing sheet 4, and illumination with extremely high brightness uniformity is formed; finally, these rays pass through a spectral modulation layer 3 (fluorescent substance or quantum dot), modulating and broadening the illumination spectrum, forming the desired visible light.
Example 3
The local distribution structure in the light uniformizing device of the present embodiment is annular as a whole, and as shown in fig. 10a-c, the light emitted by the LED is scattered into square light after passing through the designed diffractive optical element 2; the light rays are further scattered after being incident to the light uniformizing sheet 4, and illumination with extremely high brightness uniformity is formed; finally, the light passes through the phosphor or quantum dots, modulating and broadening the illumination spectrum to form the desired visible light.
in conclusion, the beneficial effects of the invention are as follows: the LED array light source is used for emitting light actively, and the extremely high brightness uniformity of the light is ensured through the light scattered by the designed DOE; the LED array light source illuminates the diffractive optical element, wave front conversion is generated when light passes through the diffractive optical element 2, and the emergent angle of the light is changed to scatter the light; when the emergent light passes through the light homogenizing sheet 4, the light is further scattered, and light distribution with extremely high uniformity is obtained; finally, the uniform light excites the fluorescent substance or quantum dots, changes (modulates) and broadens the illumination spectrum to form uniform visible light; the light emitted by the light uniformizing device has the remarkable technical advantages of high brightness uniformity, controllable and adjustable local light and brightness, long service life, environmental protection, energy conservation and the like, is easy to realize industrialization, can bring revolutionary changes to the whole industry, and has extremely high economic value and social value.
in addition, the light-emitting device utilizes the LED array light source to emit light actively, and the extremely high brightness uniformity of the light is ensured through the light scattering of the designed DOE; the LED lamp can actively emit light, adjust the brightness and the brightness of a designated area, greatly improve the brightness uniformity, protect the environment, save the energy and prolong the service life.
In addition, the diffractive optical element 2 and the uniform light sheet 4 can be industrially produced by the existing nanoimprint technology, the manufacturing process is mature, the product consistency is easy to guarantee, the price is controllable, and the cost is low.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
the above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The light homogenizing device is characterized by comprising a light splitting layer and a widened spectrum layer, wherein light emitted by a light source is scattered through the light splitting layer, and then modulated and spectrum widened through the widened spectrum layer.
2. the dodging device according to claim 1, wherein the light splitting layer is a diffractive optical element.
3. The dodging device according to claim 2, wherein a light splitting structure is arranged on the diffractive optical element.
4. The dodging device according to claim 3, wherein the light splitting structure is a micro-nano structure.
5. the dodging device according to claim 4, wherein the arrangement of the light splitting structures is pixelized, distributed throughout, distributed uniformly around the periphery of the diffractive optical element, or partially distributed throughout the diffractive optical element.
6. The light unifying apparatus according to claim 5, wherein when the light splitting structure is locally distributed on the diffractive optical element, the locally distributed structure is wholly in a ring shape or a square shape.
7. the light unifying apparatus according to any one of claims 1 to 6, wherein a light unifying sheet is further provided between the light splitting layer and the spectrum modulation layer, the light unifying sheet being configured to scatter the light emitted from the light splitting layer.
8. A light unifying apparatus according to any one of claims 1 to 6 wherein the spectral modulation layer is a phosphor layer or a quantum dot layer.
9. A light emitting apparatus comprising a light source and the light unifying device according to any one of claims 1 to 8.
10. the light emitting apparatus of claim 9, wherein the light source is an active light source, and wherein the active light source is an LED light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810554757.3A CN110554533A (en) | 2018-06-01 | 2018-06-01 | Dodging device and light-emitting equipment comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810554757.3A CN110554533A (en) | 2018-06-01 | 2018-06-01 | Dodging device and light-emitting equipment comprising same |
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| CN110554533A true CN110554533A (en) | 2019-12-10 |
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| CN201810554757.3A Pending CN110554533A (en) | 2018-06-01 | 2018-06-01 | Dodging device and light-emitting equipment comprising same |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162278A (en) * | 2007-11-13 | 2008-04-16 | 苏州维旺科技有限公司 | Leaded light component structure in structure backlight module and preparation method thereof |
| CN106707624A (en) * | 2017-03-10 | 2017-05-24 | 京东方科技集团股份有限公司 | Display element, backlight source and display device |
| CN106838821A (en) * | 2017-02-21 | 2017-06-13 | 中国科学院半导体研究所 | One kind homogenizes white light source and its homogenizing method |
| CN208672972U (en) * | 2018-06-01 | 2019-03-29 | 苏州苏大维格光电科技股份有限公司 | A kind of dodging device and the luminaire including the dodging device |
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2018
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| CN101162278A (en) * | 2007-11-13 | 2008-04-16 | 苏州维旺科技有限公司 | Leaded light component structure in structure backlight module and preparation method thereof |
| CN106838821A (en) * | 2017-02-21 | 2017-06-13 | 中国科学院半导体研究所 | One kind homogenizes white light source and its homogenizing method |
| CN106707624A (en) * | 2017-03-10 | 2017-05-24 | 京东方科技集团股份有限公司 | Display element, backlight source and display device |
| CN208672972U (en) * | 2018-06-01 | 2019-03-29 | 苏州苏大维格光电科技股份有限公司 | A kind of dodging device and the luminaire including the dodging device |
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