CN116989293A - Directional non-imaging polarized lens and light-emitting device - Google Patents
Directional non-imaging polarized lens and light-emitting device Download PDFInfo
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- CN116989293A CN116989293A CN202211709517.9A CN202211709517A CN116989293A CN 116989293 A CN116989293 A CN 116989293A CN 202211709517 A CN202211709517 A CN 202211709517A CN 116989293 A CN116989293 A CN 116989293A
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- reflecting surface
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- polarized lens
- directional non
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- 238000003384 imaging method Methods 0.000 title claims abstract description 50
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 230000001788 irregular Effects 0.000 claims description 11
- 238000005286 illumination Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005406 washing Methods 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000004313 glare Effects 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 241001465382 Physalis alkekengi Species 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/68—Details of reflectors forming part of the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The application belongs to the technical field of lamps and provides a directional non-imaging polarized lens, wherein the directional non-imaging polarized lens is arranged on an LED luminous body, the LED luminous body is arranged on a substrate, a cavity is arranged on the end face, close to the LED luminous body, of the directional non-imaging polarized lens, the cavity is sleeved on the periphery of the LED luminous body, and the inner wall of the cavity is an incident surface; the directional non-imaging polarized lens is provided with a reflecting surface and an emergent surface, the reflecting surface is arranged in the end face, the outer side wall and the end face part area far away from the LED luminous body, of the directional non-imaging polarized lens, and the emergent surface is arranged in all the end face part area far away from the LED luminous body, of the directional non-imaging polarized lens; the exit face and the entrance face overlap in a partial region. The application can realize the directional emission of light rays and simultaneously ensure that heat is not accumulated in the directional non-imaging polarized lens, and can realize good directional wall washing scene type illumination effect in special application environments with non-adjustable lamp angles.
Description
Technical Field
The application belongs to the technical field of lamps, and particularly relates to a directional non-imaging polarized lens and a light-emitting device.
Background
Along with the improvement of illumination quality, people have higher and higher requirements on scene wall washing illumination effect. The wall surface illumination visible light invisible lamp is required, in order to achieve the purpose of scene wall washing illumination visual effect, the number of more illumination lamps is generally increased, and a remote illumination scheme is adopted, so that on one hand, the cost is increased dramatically, and a certain economic burden is brought to enterprises and consumers. On the other hand, in order to meet the requirement of GB50034-2010 building illumination standard glare value, strong light rays with partial visible angles are shielded by an object which is completely opaque, and the result of the effect is that the rapid increase of the heating value of the lamp is brought, the circuit short circuit is extremely easy to cause fire, the fire is extremely easy to cause potential safety hazard. In order to control the cost and reduce the use quantity of the luminous bodies, a scheme of multi-lens combination is generally adopted, however, the existing lenses are limited by factors such as self shape, the light energy distribution and light energy utilization effects are still not ideal, and the effect of well realizing the wall washing directional irradiation in a special application environment with the angle of the lamp not adjustable still cannot be achieved.
Disclosure of Invention
In order to overcome the prior art, the application aims to provide the directional non-imaging polarized lens which can well realize the wall washing directional irradiation in special application environments.
The technical scheme adopted for solving the technical problems is as follows: an oriented non-imaging polarized lens, the oriented non-imaging polarized lens is mounted on an LED illuminant, the LED illuminant is mounted on a substrate, the end face of the directional non-imaging polarized lens, which is close to the LED luminous body, is provided with a cavity, the cavity is sleeved on the periphery of the LED luminous body, and the inner wall of the cavity is an incident surface; the directional non-imaging polarized lens is provided with a reflecting surface and an emergent surface, the reflecting surface is arranged in the end face, the outer side wall and the end face part area far away from the LED luminous body, of the directional non-imaging polarized lens, and the emergent surface is arranged in all the end face part area far away from the LED luminous body, of the directional non-imaging polarized lens; the exit face and the entrance face overlap in a partial region.
The working principle of the scheme is as follows: the method comprises the steps that an incidence surface, a reflection surface and an emergent surface are arranged on the directional non-imaging polarized lens, wherein the incidence surface is sleeved on the outer side of an LED luminous body, light rays emitted by the LED luminous body enter the directional non-imaging polarized lens through the incidence surface, after entering the directional non-imaging polarized lens, part of the light rays directly emit from the emergent surface, the rest of the light rays are directed to the reflection surface, and then the light rays are directed to the emergent surface through refraction of the reflection surface, so that the light rays are converged to the emergent surface and emitted from the emergent surface, and a directional light source is formed; and secondly, the emergent surface and the incident surface are overlapped in a partial area, so that partial light rays are emitted from the overlapped part to play a role in guiding.
Preferably, one side of the cavity, which faces away from the LED luminous body, is continuously narrowed inwards, irregular grains are formed in the end portion of the cavity, the portion, provided with the irregular grains, of the cavity is a second incidence surface, and the rest portions, except the second incidence surface, of the cavity are first incidence surfaces.
Preferably, the first incident surface satisfies the numerical formula y=ax of parabolic cambered surface 2 Wherein a= -0.482 to-0.215, and the parabolic cambered surface of the first incident surface is perpendicular to the substrate surface.
Preferably, the second incident surface satisfies the numerical formula of parabolic cambered surface, where y=bx 2 Wherein b= -0.308 to-0.132, and the parabolic cambered surface of the second incident surface is perpendicular to the substrate surface.
Preferably, the reflecting surface includes a first reflecting surface, a second reflecting surface and a third reflecting surface; the third reflecting surface is an end surface close to the LED luminous body, the second reflecting surface is the outer side wall of the directional non-imaging polarized lens, and the first reflecting surface is arranged on an end surface far away from the third reflecting surface; the emergent surface comprises a first emergent surface and a second emergent surface, and the first emergent surface is completely overlapped with the first reflecting surface; one side of the second reflecting surface is connected with one side of the third reflecting surface, the other side of the second reflecting surface is connected with one side of the first reflecting surface and one side of the second emergent surface respectively, and the other side of the first reflecting surface is connected with the other side of the second emergent surface.
Preferably, the first exit surface and the first reflection surface satisfy a numerical formula y=cx of parabolic cambered surface 2 Wherein c=0.04 to 0.06.
Preferably, the second exit surface satisfies the numerical formula y=dx of a parabolic arc surface 2 Wherein d= -0.06 to-0.04.
Preferably, the second reflecting surface is a cylindrical surface, and the surfaces of the second reflecting surface and the third reflecting surface are provided with a complete reflecting layer.
Preferably, the first reflecting surface is an inward cambered surface, and the surface of the first reflecting surface is provided with an incomplete reflecting layer.
A light emitting device includes an LED emitter and a directional non-imaging polarized lens.
Compared with the prior art, the application has the beneficial effects that:
1. through setting up incident plane, reflecting surface and exit face on directional non-imaging polarized lens, light enters into directional non-imaging polarized lens from the incident plane, partial light is penetrated out from the exit face, other light also accessible reflecting surface is penetrated out from exit face, direct with light reflection through the reflecting surface is penetrated out, let light all penetrate out from the exit face, guarantee when realizing that light directional penetrating out that the heat can not pile up in directional non-imaging polarized lens's inside, in the special application environment of non-adjustable lamps and lanterns angle, can realize fine directional wall washing class scene type illuminating effect, can greatly reduced lamps and lanterns's quantity, the cost is saved, the improvement illuminating effect and illumination quality, prevent that the glare from producing, improve the comfort level of vision.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of the directional non-imaging polarized lens;
FIG. 2 is an overall schematic diagram of the directional non-imaging polarized lens;
FIG. 3 is a top view of the directional non-imaging polarized lens;
FIG. 4 is a schematic view of a cavity;
FIG. 5 is a schematic view of light;
1. a cavity; 2. an incidence surface; 20. a first incident surface; 21. a second incident surface; 3. a reflecting surface; 30. a first reflecting surface; 31. a second reflecting surface; 32. a third reflective surface; 4. an exit surface; 40. a first exit surface; 41. a second exit surface; 5. LED luminous body 6, base plate.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. The embodiments of the present application and the features in the embodiments may be combined with each other without collision. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, and the described embodiments are merely some, rather than all, embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.
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 this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
As shown in fig. 1-4, a directional non-imaging polarized lens according to an embodiment of the application may include an entrance face 2, a reflective face 3, and an exit face 4.
In some alternative embodiments, the shape of the directional non-imaging polarized lens is a cylinder, one end of the cylinder is provided with a cavity 1 approximately half an ellipse, wherein one inward side of the cavity 1 is narrower than one outward side of the cavity 1, one inward side of the cavity 1 is provided with irregular lines, the portion covered with the irregular lines is a first incident surface 20, the other portion of the cavity 1 is a smooth surface, the portion of the smooth surface is a second incident surface 21, when the directional non-imaging polarized lens is installed, the cavity 1 is sleeved on the periphery of the LED illuminant 5, the LED illuminant 5 is installed on the substrate 6, the reason for this is that most of the light of the LED illuminant 5 is emitted from the right front, only about 30% -40% of the light is emitted from the side of the cavity 1, therefore, when most of the light passes through the first incident surface 20 provided with the irregular lines, the light is subjected to diffuse refraction, the light is prevented from being converged at the end of the cavity 1 too much to generate excessive heat, and about 30% -40% of the second incident surface is not required, and the cost is reduced due to the fact that the light is not required to be emitted from the second incident surface too much heat, and thus the cost is reduced.
The section of the cylinder provided with the cavity 1 is provided with a third reflecting surface 32, the outer side wall of the cylinder is provided with a second reflecting surface 31, the other end of the cylinder is composed of two cambered surfaces, wherein one outwards cambered surface is a second emergent surface 41, and one inwards cambered surface is a first emergent surface and a first reflecting surface 30. Wherein, a layer of total reflection is coated on the outer layers of the second reflection surface 31 and the third reflection surface 32, when the light enters the second reflection surface 31 and the third reflection surface 32, a layer of incomplete reflection is coated on the surface of the first reflection surface 30, when the light reaches the first reflection surface 30, about 30% of the light is transmitted out from the first reflection surface 30, and the rest 70% of the light is reflected by the incomplete reflection layer.
In a further preferred embodiment, as shown in the cross-sectional view of the directional non-imaging polarized lens in fig. 3, the first incident surface 20 is a parabolic curve at one end, and the numerical formula of the parabolic curve y=ax2, where a= -0.482 to-0.215. The above numerical formula is obtained by using the conventional lens placement direction, that is, when the LED luminary 5 is located at the bottom, the parabolic cambered surface opening is downward, and of course, the product can be placed in various directions as required, and the shape and structure of the second incident surface 21 will not be changed due to the placement direction. In one embodiment, a= -0.413.
In a further preferred embodiment, as shown in the cross-sectional view of the directional non-imaging polarized lens in fig. 3, the second incident surface 21 is also parabolic at one end, and the numerical formula of the cambered surface of the parabola satisfies y=bx2, where b= -0.308 to-0.132. The above numerical formula is obtained by the conventional placement direction of the lens, and the second incident surface 21 is connected to the first incident surface 20, so that the shape and structure of the second incident surface 21 are not changed by the placement direction. In one embodiment, b= -0.294.
In a further preferred embodiment, the second incident surface 21 is provided with irregular lines, a plurality of curved surfaces with three-dimensional etched lines, each three-dimensional etched line has a height of 0.125-0.186 mm, the shape is irregular three-dimensional etched lines, and the serial number of the pattern plate can be MT-11100, MT-11305 or MT-11310. More preferably, the card is MT-11305 with a height of 0.1285mm. The second incident surface 21 is provided with irregular lines, so that light beams with very concentrated light can be effectively uniformly dispersed and spread.
In a further preferred embodiment, the first exit surface 40 and the first reflective surface 30 satisfy the numerical formula y=cx2 of parabolic cambered surfaces, where c=0.04-0.06, where the numerical formula is obtained in the conventional placement direction of the lens, the first exit surface 40 and the first reflective surface 30 are completely overlapped, and 30% of the light is emitted from the first reflective surface 30, and since the first reflective surface 30 can be approximately regarded as a concave mirror structure, the light is emitted and converged through the first reflective surface 30, so that an optical path is projected onto a road or a wall for guiding.
In a further preferred embodiment, the second exit surface 41 is a parabolic arc surface, the numerical formula of which is y=dx2, where d= -0.06-0.04. The above numerical formula is obtained by the conventional placement direction of the lens, and since the second exit surface 41 is connected to the first exit surface 40, the second reflection surface 31 can be approximately regarded as a convex mirror structure, and light rays are emitted and dispersed through the second exit surface 41, so that glare is prevented, and visual comfort is improved.
In a further preferred embodiment, the surface of the first reflecting surface 30 is coated with a composite coating material with a reflectivity of 70% and a transmissivity of 30%, the thickness of the coating composite material is 0.13-0.15 μm, and the composite material is nickel+chromium+PET.
In a further preferred embodiment, the surfaces of the second reflecting surface 31 and the third reflecting surface 32 are coated with a composite coating material with reflectivity of 100%, the thickness of the coating composite material is 0.32-0.4 micrometers, and the composite material is nickel+chromium+PET.
In a further embodiment, a travel path of the light from the LED luminary 5 is specifically described, where the light L1 enters from the first incident surface 20, is refracted by the first incident surface 20, and is directly directed to the second exit surface 41, and finally is directed to the wall surface as the light L1-1 by refraction of the second exit surface 41.
In a further embodiment, another route of light passing through the LED luminary 5 is specifically described, the light L1 enters from the first incident surface 20, is refracted by the parabola and directed to the second reflecting surface 31, and is directed to the first reflecting surface 30 by the refraction of the second reflecting surface 31, then 70% of the light L1-2 is reflected, and is emitted from the second emitting surface 41 as the light 1-3 and projected in front, and another 30% of the light is emitted from the first emitting surface 40 as the light L1-4, and is converged by the first emitting surface 40 to form a light path.
In a further embodiment, another path of light from the LED luminary 5 is specifically described, the light L2 is incident from the second incident surface 21, the light L2 is dispersed into a plurality of light L2-1 by the scattering effect of the irregular pattern, and the light L2-2 is projected to the wall surface by refraction of the second exit surface 41.
In a further embodiment, another route of light passing from the LED luminary 5 is specifically described, where the light L3 enters from the first incident surface 20, passes through the refraction of the first incident surface 20, and is directed to the second reflecting surface 31, and is directed to the second exit surface 41 by the refraction of the second reflecting surface 31, and finally exits from the second exit surface 41 as the light L3-1 and is projected in front.
In a further embodiment, another route of light passing from the LED luminary 5 is specifically described, where the light L4 enters from the first incident surface 20, passes through the refraction of the first incident surface 20, and is directed to the third reflective surface 32, and is directed to the second exit surface 41 by the refraction of the third reflective surface 32, and finally exits from the second exit surface 41 as the light L4-1 and is projected in front.
The present application is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present application are within the scope of the technical proposal of the present application.
Claims (10)
1. An oriented non-imaging polarized lens mounted on an LED luminary mounted on a substrate, characterized in that,
the directional non-imaging polarized lens is provided with a cavity close to the end face of the LED luminous body, the cavity is sleeved on the periphery of the LED luminous body, and the inner wall of the cavity is an incident surface;
the LED illuminating device comprises an LED illuminating body, a directional non-imaging polarizing lens, a reflecting surface, an emergent surface and a reflecting surface, wherein the reflecting surface and the emergent surface are arranged on the directional non-imaging polarizing lens, the reflecting surface is arranged on the end surface of the directional non-imaging polarizing lens, which is close to the LED illuminating body, the outer side wall of the directional non-imaging polarizing lens and the end surface part area far away from the LED illuminating body, and the emergent surface is arranged on the whole area of the directional non-imaging polarizing lens, which is far away from the end surface of the LED illuminating body; the exit face and the entrance face overlap in a partial region.
2. The directional non-imaging polarized lens of claim 1, wherein,
the cavity is continuously narrowed inwards at one side, facing away from the LED luminous body, of the cavity, irregular grains are formed in the end portion of the cavity, the portion, provided with the irregular grains, of the cavity is a second incidence surface, and the rest portions, except the second incidence surface, of the cavity are first incidence surfaces.
3. The directional non-imaging polarized lens according to claim 2, wherein,
the first incident surface satisfies the numerical formula y=ax of parabolic cambered surface 2 Wherein a= -0.482 to-0.215, and the parabolic cambered surface of the first incident surface is perpendicular to the surface of the substrate.
4. The directional non-imaging polarized lens according to claim 2, wherein,
the second incident surface satisfies the numerical formula of parabolic cambered surface to express y=bx 2 Wherein b= -0.308 to-0.132, and the parabolic cambered surface of the second incident surface is perpendicular to the surface of the substrate.
5. The directional non-imaging polarized lens of claim 1, wherein,
the reflecting surface comprises a first reflecting surface, a second reflecting surface and a third reflecting surface;
the third reflecting surface is an end surface close to the LED luminous body, the second reflecting surface is an outer side wall of the directional non-imaging polarized lens, and the first reflecting surface is arranged on an end surface far away from the third reflecting surface;
the emergent surface comprises a first emergent surface and a second emergent surface, and the first emergent surface is completely overlapped with the first reflecting surface;
one side of the second reflecting surface is connected with one side of the third reflecting surface, the other side of the second reflecting surface is connected with one side of the first reflecting surface and one side of the second emergent surface respectively, and the other side of the first reflecting surface is connected with the other side of the second emergent surface.
6. The directional non-imaging polarized lens of claim 5, wherein,
the first emergent surface and the first reflecting surface meet the numerical formula of parabolic cambered surfacey＝cx 2 Wherein c=0.04-0.06, and parabolic cambered surfaces of the first emergent surface and the first reflecting surface are perpendicular to the surface of the substrate.
7. The directional non-imaging polarized lens of claim 5, wherein,
the second emergent surface meets the numerical formula y=dx of the parabolic cambered surface 2 Wherein d= -0.06 to-0.04, and the parabolic cambered surface of the second emergent surface is perpendicular to the surface of the substrate.
8. The directional non-imaging polarized lens of claim 5, wherein,
the second reflecting surface is a cylindrical surface, and the surfaces of the second reflecting surface and the third reflecting surface are provided with complete reflecting layers.
9. The directional non-imaging polarized lens of claim 5, wherein,
the first reflecting surface is an inward cambered surface, and the surface of the first reflecting surface is provided with an incomplete reflecting layer.
10. A light emitting device comprising an LED luminary and the directional non-imaging polarized lens of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211709517.9A CN116989293A (en) | 2022-12-29 | 2022-12-29 | Directional non-imaging polarized lens and light-emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211709517.9A CN116989293A (en) | 2022-12-29 | 2022-12-29 | Directional non-imaging polarized lens and light-emitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116989293A true CN116989293A (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211709517.9A Pending CN116989293A (en) | 2022-12-29 | 2022-12-29 | Directional non-imaging polarized lens and light-emitting device |
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| Country | Link |
|---|---|
| CN (1) | CN116989293A (en) |
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2022
- 2022-12-29 CN CN202211709517.9A patent/CN116989293A/en active Pending
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