CN206280919U - Light-emitting device - Google Patents
Light-emitting device Download PDFInfo
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- CN206280919U CN206280919U CN201621089940.3U CN201621089940U CN206280919U CN 206280919 U CN206280919 U CN 206280919U CN 201621089940 U CN201621089940 U CN 201621089940U CN 206280919 U CN206280919 U CN 206280919U
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- light
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Abstract
A kind of light-emitting device of disclosure, including light source and lens.The light that light source sends is divided into main region light and side area light.Lens have light out part and light in part, and light in part has accommodation space.Light source is arranged at accommodation space, and light in part has center and marginal zone, and center receives main region light, marginal zone connects center and respective side zonal ray, marginal zone has multiple connected wedge structures, from inside to outside sequential, and each wedge structure has incidence surface and reflecting surface.Side area light is incident by the incidence surface of each wedge structure, and is reflected by the corresponding reflecting surface of each incidence surface, and from light out part outgoing.The farthest wedge structure incidence surface lower end cusp in distance center area is most short with the vertical range of the plane for setting light source, and the vertical range of other respectively the wedge structure incidence surface lower end cusp and planes, can increase with the distance of center with each wedge structure and reduce.
Description
Technical field
The present invention relates to a kind of lighting device, more particularly to a kind of lensed light-emitting device of tool.
Background technology
Light emitting diode (Light Emitting Diode, LED) is because of its long lifespan, power consumption is few and heating degree is small
The advantages of, every articles for use of the scope in daily life are widely applied, wherein, it is more most commonly seen with lamp applications.
In general, when light emitting diode is applied to light-emitting device (such as light fixture), due to the need of some optical characteristics
Will, for example make light Quasi-straight light-focusing or homogenous diffusion, encapsulation when be accomplished by by the secondary optical lens with optical texture with
Light emitting diode is together encapsulated, and light-emitting device is reached desired optical characteristics.However, often having optical texture
Secondary optical lens will determine the overall thickness of light-emitting device.
Therefore, how a kind of luminous dress of the slim lens for having known light Quasi-straight light-focusing or homogenous diffusion effect concurrently is provided
Put, actually one of current important topic.
The content of the invention
This case provides a kind of light-emitting device, including light source and lens.
The light that light source sends is divided into main region light and side area light.Lens then have light out part and light in part,
And light in part has accommodation space.Light source is arranged at accommodation space, and light in part has center and marginal zone, and center receives
Main region light, and marginal zone connection center and respective side zonal ray, marginal zone simultaneously has multiple wedge shape knots being connected
Structure, sequential from inside to outside, and each wedge structure has incidence surface and reflecting surface.Side area light is by each wedge structure
Incidence surface it is incident, and reflected by the corresponding reflecting surface of each incidence surface, and from light out part outgoing.The farthest wedge in distance center area
The vertical range of shape structure incidence surface lower end cusp and the plane for setting light source is for most short, and other each wedge structure incidence surfaces
The vertical range of lower end cusp and plane, can increase with each wedge structure and reduce with the distance of the center.
In one embodiment, lens further include multiple micro-structurals, and light in part or light out part at least partly have
These micro-structurals.
This case also provides a kind of light-emitting device, including light source and lens.
The light that light source sends is divided into main region light and side area light.Lens then have light out part and light in part,
And light in part has accommodation space.Light source is arranged at accommodation space, and light in part has center and marginal zone, and center receives
Main region light, and marginal zone connection center and respective side zonal ray, marginal zone simultaneously has multiple wedge shape knots being connected
Structure, sequential from inside to outside, and each wedge structure has incidence surface and reflecting surface.Side area light is by each wedge structure
Incidence surface it is incident, and reflected by the corresponding reflecting surface of each incidence surface, and from light out part outgoing.It is farthest apart from the center
The vertical range of wedge structure incidence surface lower end cusp and the plane that light source is set for most short, and other respectively the wedge structure enter light
Face lower end cusp is identical with the vertical range of plane.
In one embodiment, lens further include multiple micro-structurals, and light in part or light out part at least partly have
These micro-structurals.
In one embodiment, light out part is plane, curved surface, concave surface, convex surface, micro lens faces, pizza faces, micro
Pizza faces, atomization face or irregular face.
This case provides a kind of light-emitting device, including light source and lens again.
The light that light source sends is divided into main region light and side area light.Lens then have light out part and light in part,
And light in part has accommodation space.Light source is arranged at accommodation space, and light in part has center and marginal zone, and center receives
Main region light, and marginal zone connection center and respective side zonal ray, marginal zone simultaneously has multiple wedge shape knots being connected
Structure, sequential from inside to outside, and each wedge structure has incidence surface and reflecting surface.Side area light is by each wedge structure
Incidence surface it is incident, and reflected by the corresponding reflecting surface of each incidence surface, and from light out part outgoing.It is farthest apart from the center
The vertical range of wedge structure incidence surface lower end cusp and the plane that light source is set for most short, and other respectively the wedge structure enter light
The vertical range of face lower end cusp and plane, can increase with the distance of center with each wedge structure and present and be first incremented by again
Successively decrease.
In one embodiment, lens further include multiple micro-structurals, and light in part or light out part at least partly have
These micro-structurals.
This case more provides a kind of light-emitting device, including light source and lens.
The light that light source sends is divided into main region light and side area light.Lens then have light out part and light in part,
And light in part has accommodation space.Light source is arranged at accommodation space, and light in part has center and marginal zone, and center receives
Main region light, and marginal zone connection center and respective side zonal ray, marginal zone simultaneously has multiple wedge shape knots being connected
Structure, sequential from inside to outside, and each wedge structure has incidence surface and reflecting surface.Side area light is by each wedge structure
Incidence surface it is incident, and reflected by the corresponding reflecting surface of each incidence surface, and from light out part outgoing.It is farthest apart from the center
The vertical range of wedge structure incidence surface lower end cusp and the plane that light source is set for most short, and other respectively the wedge structure enter light
The vertical range of face lower end cusp and plane, can increase with the distance of center with each wedge structure and present and be first incremented by again
Maintain an equal level.
In one embodiment, lens further include multiple micro-structurals, and light in part or light out part at least partly have
These micro-structurals.
In one embodiment, light out part is plane, curved surface, concave surface, convex surface, micro lens faces, pizza faces, micro
Pizza faces, atomization face or irregular face.
Brief description of the drawings
Fig. 1 is the schematic perspective view of this case light-emitting device.
Fig. 2 is confined explosion's schematic diagram of this case light-emitting device.
Fig. 3 A to Fig. 3 C are the generalized section of Fig. 1.
Fig. 3 D to Fig. 3 F are the generalized section of another form of this case lens.
Fig. 4 is the generalized section of another embodiment of this case lens.
Specific embodiment
Hereinafter with reference to relevant drawings, the light-emitting device according to this case preferred embodiment is illustrated.Wherein identical component will be with
Identical reference marks is illustrated.For the sake of clarity, related component non-immediate to this case will be omitted and do not drawn.
Referring to Fig. 1, Fig. 2, Fig. 3 A to Fig. 3 C, Fig. 1 is the schematic perspective view of this case light-emitting device 1, and Fig. 2 is this case
Confined explosion's schematic diagram of light-emitting device 1, Fig. 3 A to Fig. 3 C are the generalized section of Fig. 1.
In the present embodiment, light-emitting device 1 includes light source 12 and lens 13.Additionally, light-emitting device 1 further includes bottom
Plate 10, and lens 13 and light source 12 be all arranged on base plate 10, base plate 10 can be circuit board.And the light-emitting device 1 arranged in pairs or groups can
It is the light fixture of directive property, for example, can is Par lamps, MR16 lamps or Down lamp etc..
As shown in Fig. 2 and Fig. 3 A, lens 13 have light in part 13A and light out part 13B, and light in part 13A has accommodating sky
Between, it is used to accommodating light source 12.Consequently, it is possible to the emitted light of light source 12 leaves light-emitting device 1 after lens 13 are collimated.
The light that light source 12 sends is divided into main region light and side area light, and for the main region of corresponding light source 12
Light and side area light, the light in part 13A of lens 13 have center 131 and marginal zone 132.Center 131 receives master
Zonal ray, and the connection of marginal zone 132 center 131 and respective side zonal ray.Wherein, main region light hangs down with light source 12
Light in the range of the light wire clamp predetermined angle of straight outgoing.In certain embodiments, predetermined angle is 20-50 degree.Supplementary notes
, " light of light source vertical exit " described herein is defined as the light projected from the respectively light source center.
Additionally, marginal zone 132 has multiple connected wedge structure W, sequential from inside to outside, and each wedge structure has
There is incidence surface 132A and reflecting surface 132B.Side area light is incident by the incidence surface 132A of each wedge structure W, and is respectively entered
The corresponding reflecting surface 132B of smooth surface 132A are reflected, and from light out part 13B outgoing.
As shown in Fig. 3 A and Fig. 3 B, the farthest wedge structure W in distance center area 1314Incidence surface 132A lower ends cusps
Vertical range h41For most short, and the vertical range h of other each wedge structure W incidence surface 132A lower ends cusps, can be with each wedge shape
Structure W increases and reduces with the distance of center 131.Wherein, the vertical range h of incidence surface 132A lower ends cusp refers to each wedge shape
The vertical range of the incidence surface 132A lower end cusps of structure W and the plane of setting light source 12.Plane herein can be the present embodiment
Base plate 10.
Specifically, each wedge structure W1、W2、W3、W4Incidence surface 132A lower ends cusp vertical range h11、h21、h31、
h41, it will with each wedge structure W1、W2、W3、W4Reduced away from center 131, that is to say, that the most wedge structure of inner side
W1The vertical range h of incidence surface 132A lower ends cusp11It is maximum, wedge structure W2、W3Incidence surface 132A lower ends cusp it is vertical away from
From h21、h31Gradually to successively decrease, and outermost wedge structure W4The vertical range h of incidence surface 132A lower ends cusp41It is minimum.
Therefore, each wedge structure W of the present embodiment1、W2、W3、W4The vertical range h of each incidence surface 132A lower ends cusp11、h21、h31、h41
Relational expression be：h11>h21>h31>h41。
This case further provides for the different shape of the vertical range of each wedge structure incidence surface lower end cusp of lens；Enumerate
Following Fig. 3 D to Fig. 3 F explanations.As shown in Figure 3 D, in the present embodiment, the farthest wedge structure W in distance center area 1414Enter
The vertical range h of smooth surface 142A lower ends cusp42For most short, and other each wedge structure W incidence surface 142A lower ends cusps is vertical
It is all identical apart from h.Wherein, the vertical range h of incidence surface 142A lower ends cusp refers to the incidence surface 142A lower ends of each wedge structure W
The vertical range of the plane of cusp and setting light source 12.Plane herein can be the base plate 10 of the present embodiment.
Specifically, wedge structure W4Incidence surface 142A lower ends cusp vertical range h42For most short, and other each wedges
Shape structure W1、W2、W3Incidence surface 142A lower ends cusp vertical range h12、h22、h32It is then identical, that is to say, that most inner side
Wedge structure W1The vertical range h12 of incidence surface 142A lower ends cusp, can be equal to wedge structure W2、W3Incidence surface 142A lower ends point
The vertical range h of point22、h32, and outermost wedge structure W can be more than4The vertical range h of incidence surface 142A lower ends cusp42。
Therefore, each wedge structure W of the present embodiment1、W2、W3、W4The vertical range h of each incidence surface 142A lower ends cusp12、h22、h32、h42
Relational expression be：h12=h22=h32>h42。
As shown in FIGURE 3 E, in the present embodiment, the farthest wedge structure W in distance center area 1514Incidence surface 152A lower ends
The vertical range h of cusp43For most short, and the vertical range h of other each wedge structure W incidence surface 152A lower ends cusps, can be with
The distance of each wedge structure W and center 151 increases and presents first to be incremented by and successively decrease again.Wherein, incidence surface 152A lower ends cusp
Vertical range h refers to the vertical range of the incidence surface 152A lower end cusps with the plane for setting light source 12 of each wedge structure W.Herein
Plane can be the present embodiment base plate 10.
Specifically, wedge structure W4Incidence surface 152A lower ends cusp vertical range h43For most short, and other each wedges
Shape structure W1、W2、W3Incidence surface 152A lower ends cusp vertical range h13、h23、h33, can be with each wedge structure W and center
The distance in area 151 increases and to present first be incremented by and successively decrease again, that is to say, that outermost wedge structure W4Incidence surface 152A lower ends point
The vertical range h of point43For most short, and the most wedge structure W of inner side1The vertical range h of incidence surface 152A lower ends cusp13, can be small
In wedge structure W2The vertical range h of incidence surface 152A lower ends cusp23；And wedge structure W2Incidence surface 152A lower ends cusp hang down
Directly apart from h23, can also be more than wedge structure W3The vertical range h of incidence surface 152A lower ends cusp33.Therefore, each wedge of the present embodiment
Shape structure W1、W2、W3、W4The vertical range h of each incidence surface 152A lower ends cusp13、h23、h33、h43Relational expression be：h43<h13<
h33<h23Or h43<h33<h13<h23。
As illustrated in Figure 3 F, in the present embodiment, the farthest wedge structure W in distance center area 1614Incidence surface 162A lower ends
The vertical range h of cusp44For most short, and the vertical range h of other each wedge structure W incidence surface 162A lower ends cusps, can be with
The distance of each wedge structure W and center 161 increases and presents first to be incremented by and maintain an equal level again.Wherein, incidence surface 162A lower ends cusp
Vertical range h refers to the vertical range of the incidence surface 162A lower end cusps with the plane for setting light source 12 of each wedge structure W.Herein
Plane can be the present embodiment base plate 10.
Specifically, wedge structure W4Incidence surface 162A lower ends cusp vertical range h44For most short, and other each wedges
Shape structure W1、W2、W3Incidence surface 162A lower ends cusp vertical range h14、h24、h34, can be with each wedge structure W and center
The distance in area 161 increases and to present first be incremented by and maintain an equal level again, that is to say, that outermost wedge structure W4Incidence surface 162A lower ends point
The vertical range h of point44For most short, and the most wedge structure W of inner side1The vertical range h of incidence surface 162A lower ends cusp14, can be small
In wedge structure W2The vertical range h of incidence surface 162A lower ends cusp24；And wedge structure W2Incidence surface 162A lower ends cusp hang down
Directly apart from h24, wedge structure W can be equal to3The vertical range h of incidence surface 162A lower ends cusp34.Therefore, each wedge shape of the present embodiment
Structure W1、W2、W3、W4The vertical range h of each incidence surface 162A lower ends cusp14、h24、h34、h44Relational expression be：h44<h14<h24
=h34。
In the present embodiment, species, quantity and the spread configuration mode of light source 12 are not intended to limit.For species, light source
12 can be the luminous of luminous light-emitting diode chip for backlight unit, LED encapsulation body or dome, tengsten lamp or other point-like or wire
Element.Quantitatively, though diagram only draws a light source 12, it can be single or multiple, and single is to be sent out comprising multiple
Optical grain is encapsulated as a packaging body.For spread configuration mode, light source 12 may be disposed at the center of correspondence lens 13 or be in
Straight line, circle, arc, cross, array or other shapes are set.Additionally, the lens 13 of this case are in order to reach preferred effect,
Also can be adulterated some dissimilar materials, and can for example be adulterated scattering particles or colouring agent, and light color to lift dispersion effect or change.
Hereinafter will be described in detail the light transfer mode of light that light source 12 provided in lens 13.Referring to figure
2nd, there is Fig. 3 A to Fig. 3 C, lens 13 light in part 13A and light out part 13B, wherein light in part 13A to face light source 12 so that light source
12 light for being sent enter lens 13 from light in part 13A, and by lens 13 guide and from light in part 13A outgoing (Fig. 3 A arrows
It is light departure direction).And the ratio of the height and the width of the lens 13 of the present embodiment is between 0.1 to 0.6.It is preferred that ground level with
The ratio of width is between 0.2 to 0.4.
Specifically, the center 131 of the light in part 13A of the present embodiment can be a curved lenses, and marginal zone 132 encloses
Set around center 131.The connected wedge structure W of the multiple of the marginal zone 132 of this case embodiment is from inside to outside sequentially configured.
The number of each wedge structure W of marginal zone 132 is less than 6, is preferably ranges between 2 to 5, it is however generally that, the quantity of taper structure W
More, the directive property of overall light extraction is more preferably.
The reflecting surface 132B of each wedge structure W is connected with the incidence surface 132A of next wedge structure W, and the most wedge of inner side
Shape structure W1Incidence surface 132A connection center 131.In other words, each wedge structure W is sequentially connected and is set around center 131
Put, and outermost wedge structure W4Reflecting surface 132B be connected with incidence surface 132A.
As shown in Figure 3 C, in the present embodiment, the most wedge structure W of inner side1Angle of wedge tip and the center of light source 12 and
Angle [alpha] folded by edge1, the angle of wedge tip of outermost wedge structure W and the angle folded by light source center and edge can be more than
α4。
And the part lighting angle β in each wedge structure W light ranges that corresponding light source 12 sends respectively, and each wedge type knot
Lighting angle β corresponding to structure W is identical or different.Corresponding each lighting angle β is between 5 degree to 25 to each wedge structure W respectively
Between degree.
Additionally, the incidence surface 132A of each wedge structure W is received in the range of the predetermined angle that light source 12 is sent respectively
Light, and the light that will be received of reflecting surface 132B using each wedge structure W is totally reflected, for example, light source 12
Light is entered by incidence surface 132A, and is reflected by reflecting surface 132B.
Each wedge structure W is responsible for being totally reflected the light of the side area of light source 12, most inner side wedge structure W1It is responsible for
By lighting angle β1The light of interior side area is totally reflected, secondary one-level wedge structure W2It is responsible for lighting angle β2Interior
The light of side area is totally reflected, one-level wedge structure W again3It is responsible for lighting angle β3The light of interior side area
It is totally reflected and outermost wedge structure W4Then it is responsible for lighting angle β4The light of interior side area is totally reflected.
Lighting angle β1、β2、β3And β4Size can be with identical or different.
As shown in figure 4, in the present embodiment, lens 17 can more have multiple micro-structurals 171, and light in part 17A or light extraction
Portion 17B at least partly has those micro-structurals 171.The generation type of its micro-structural can be embossment style (embossment), spray
The mode such as sand atomization, casting, cutting type, etching formula or printing-type forms multiple in pre- on light in part 17A or light out part 17B
Determine concave point, salient point or the V-type groove of image distribution.
As shown in Fig. 3 A to Fig. 4, in the present embodiment, the light out part 13B of lens 13,14,15,16,17,14B, 15B,
16B, 17B can be plane, curved surface, concave surface, convex surface, micro lens faces, pizza faces, micro pizza faces, atomization face or
Irregular face.
In sum, the present invention is provided with center and marginal zone, and edge by by the light in part corresponding light source of lens
Area has more multiple wedge structures, can be provided with and known light-emitting device identical Quasi-straight light-focusing, uniform by each wedge structure
Thinner lens and light-emitting device in the case of the effect of radiating.
Illustrative is the foregoing is only, rather than is restricted person.Any spirit and scope without departing from this case, and it is entered
Capable equivalent modifications or change, are intended to be limited solely by appended claims.
Claims (10)
1. a kind of light-emitting device, including：
Light source, the light for sending is divided into main region light and side area light；And
Lens, with light out part and light in part, and the light in part has accommodation space, and the light source is arranged at the accommodation space, and
The light in part has center and marginal zone, and wherein the center receives the main region light, and the marginal zone connects the center
Area and to should side area light, the marginal zone simultaneously has multiple connected wedge structures, from inside to outside sequential, and each
The wedge structure has incidence surface and reflecting surface,
Wherein the side area light is incident by the incidence surface of the respectively wedge structure, and by the corresponding reflection of the respectively incidence surface
Face is reflected, and from the light out part outgoing,
Wedge structure incidence surface lower end cusp wherein farthest apart from the center and the vertical range of the plane that the light source is set
For most short, and the vertical range of other respectively the wedge structure incidence surface lower end cusp and the planes, can be with each wedge structure
Increase with the distance of the center and reduce.
2. light-emitting device according to claim 1, the wherein lens further include multiple micro-structurals, and the light in part or
The light out part at least partly has the micro-structural.
3. a kind of light-emitting device, including：
Light source, the light for sending is divided into main region light and side area light；And
Lens, with light out part and light in part, and the light in part has accommodation space, and the light source is arranged at the accommodation space, and
The light in part has center and marginal zone, and wherein the center receives the main region light, and the marginal zone connects the center
Area and to should side area light, the marginal zone simultaneously has multiple connected wedge structures, from inside to outside sequential, and each
The wedge structure has incidence surface and reflecting surface,
Wherein the side area light is incident by the incidence surface of the respectively wedge structure, and by the corresponding reflection of the respectively incidence surface
Face is reflected, and from the light out part outgoing,
Wedge structure incidence surface lower end cusp wherein farthest apart from the center and the vertical range of the plane that the light source is set
For most short, and other respectively the wedge structure incidence surface lower end cusp it is identical with the vertical range of the plane.
4. light-emitting device according to claim 3, the wherein lens further include multiple micro-structurals, and the light in part or
The light out part at least partly has those micro-structurals.
5. light-emitting device according to claim 3, the wherein light out part are plane, curved surface, concave surface, convex surface, micro
Lens faces, pizza faces, micro pizza faces, atomization face or irregular face.
6. a kind of light-emitting device, including：
Light source, the light for sending is divided into main region light and side area light；And
Lens, with light out part and light in part, and the light in part has accommodation space, and the light source is arranged at the accommodation space, and
The light in part has center and marginal zone, and wherein the center receives the main region light, and the marginal zone connects the center
Area and to should side area light, the marginal zone simultaneously has multiple connected wedge structures, from inside to outside sequential, and each
The wedge structure has incidence surface and reflecting surface,
Wherein the side area light is incident by the incidence surface of the respectively wedge structure, and by the corresponding reflection of the respectively incidence surface
Face is reflected, and from the light out part outgoing,
Wedge structure incidence surface lower end cusp wherein farthest apart from the center and the vertical range of the plane that the light source is set
For most short, and the vertical range of other respectively the wedge structure incidence surface lower end cusp and the planes, can be with each wedge structure
Increase with the distance of the center and present first to be incremented by and successively decrease again.
7. light-emitting device according to claim 6, the wherein lens further include multiple micro-structurals, and the light in part or
The light out part at least partly has the micro-structural.
8. a kind of light-emitting device, including：
Light source, the light for sending is divided into main region light and side area light；And
Lens, with light out part and light in part, and the light in part has accommodation space, and the light source is arranged at the accommodation space, and
The light in part has center and marginal zone, and wherein the center receives the main region light, and the marginal zone connects the center
Area and to should side area light, the marginal zone simultaneously has multiple connected wedge structures, from inside to outside sequential, and each
The wedge structure has incidence surface and reflecting surface,
Wherein the side area light is incident by the incidence surface of the respectively wedge structure, and by the corresponding reflection of the respectively incidence surface
Face is reflected, and from the light out part outgoing,
Wedge structure incidence surface lower end cusp wherein farthest apart from the center and the vertical range of the plane that the light source is set
For most short, and the vertical range of other respectively the wedge structure incidence surface lower end cusp and the planes, can be with each wedge structure
Increase with the distance of the center and present first to be incremented by and maintain an equal level again.
9. light-emitting device according to claim 8, the wherein lens further include multiple micro-structurals, and the light in part or
The light out part at least partly has the micro-structural.
10. light-emitting device according to claim 8, the wherein light out part are plane, curved surface, concave surface, convex surface, micro
Lens faces, pizza faces, micro pizza faces, atomization face or irregular face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621089940.3U CN206280919U (en) | 2016-09-28 | 2016-09-28 | Light-emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621089940.3U CN206280919U (en) | 2016-09-28 | 2016-09-28 | Light-emitting device |
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| Publication Number | Publication Date |
|---|---|
| CN206280919U true CN206280919U (en) | 2017-06-27 |
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ID=59085304
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621089940.3U Expired - Fee Related CN206280919U (en) | 2016-09-28 | 2016-09-28 | Light-emitting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020010748A1 (en) * | 2018-07-09 | 2020-01-16 | 上海彩丞新材料科技有限公司 | Thin film optical lens having microstructures, design method and lighting device |
| CN111256053A (en) * | 2020-01-23 | 2020-06-09 | 上海润廷电子科技有限公司 | Optical design method and lamp for forming uniform rectangular light spots and low glare |
-
2016
- 2016-09-28 CN CN201621089940.3U patent/CN206280919U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020010748A1 (en) * | 2018-07-09 | 2020-01-16 | 上海彩丞新材料科技有限公司 | Thin film optical lens having microstructures, design method and lighting device |
| CN111256053A (en) * | 2020-01-23 | 2020-06-09 | 上海润廷电子科技有限公司 | Optical design method and lamp for forming uniform rectangular light spots and low glare |
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Granted publication date: 20170627 Termination date: 20190928 |