CN103968327A - Spread aspheric lens with rectangular light distribution spread and for display - Google Patents
Spread aspheric lens with rectangular light distribution spread and for display Download PDFInfo
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- CN103968327A CN103968327A CN201310177824.1A CN201310177824A CN103968327A CN 103968327 A CN103968327 A CN 103968327A CN 201310177824 A CN201310177824 A CN 201310177824A CN 103968327 A CN103968327 A CN 103968327A
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- 238000009826 distribution Methods 0.000 title abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 4
- 238000009792 diffusion process Methods 0.000 claims description 27
- 238000013461 design Methods 0.000 claims description 8
- 238000003892 spreading Methods 0.000 claims description 8
- 230000007480 spreading Effects 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000004513 sizing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910005540 GaP Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 239000011701 zinc Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
- G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lenses (AREA)
- Led Device Packages (AREA)
Abstract
The invention relates to a spread aspheric lens with rectangular light distribution spread and for display. The spread aspheric lens is suitable for an optical mechanism of light outputted from a light emitting component determined by an LED light-emitting component. The spread aspheric lens comprises a main body with a predetermined size, an incident surface formed by caving in from the center of the main body lower surface to allow the light outputted by the LED light-emitting component to be incident, a first exit surface and a second exit surface which are formed by protruding two sides of the center of the main body upper surface, a third exit surface formed at the edges of the first exit surface and the second exit surface in predetermined height, a recess arranged between the first exit surface and the second exit surface, and a plurality of fixing portions formed on the main body lower surface corresponding to the incident surface. With the above structure, the light outputted from LED package has rectangular light distribution, the spread aspheric lens is very suitable for the display, is simple in structure, and has high productivity.
Description
[technical field]
The present invention relates to have diffusion non-spherical lens for the photodistributed display of rectangle, specifically the required efficient light of final acquisition distributes, and the diffusion non-spherical lens of designs simplification.
[background technology]
General light emitting diode (Light Emitting Diode:LED) is to utilize semi-conductive P-N connected structure to produce the minority carrier of injection, utilizes the electric light conversion semiconductor devices of these recombination radiations.Emission wavelength is to occur changing according to the dopant species of adding on semiconductor, and for example gallium phosphide is, luminous the taking on a red color (wavelength 700nm) that zinc and elemental oxygen participate in, the luminous green (wavelength 550nm) that is that Nitrogen Atom participates in.Light emitting diode is less than traditional light source, and the life-span is long, and electric flux is directly changed into light energy and required electric power is few and excellent in efficiency.
LED is mainly used in illuminated display element or low-light (level) light source, from environmental protection, the aspect such as the life-span is long, power consumption is low, color rendering, high efficiency light-emitting, accurate control has lot of advantages, and the recent technical development along with high brightness and ultrathin, its range of application expanding day.
Nowadays, utilize described LED for various display unit, develop thereupon and much make to output to outside lens technologies from the light optimization of LED output.
The lens condition that is applicable to LED element is should export the light of the various design loads that can meet different industrial circles, and described lens to be exactly to make from the light of light source output more effectively by visualization by several different methods.Especially developing a kind of lens of realizing same light distribution efficiency when using the LED element that is equivalent on a small quantity light source.
[prior art document]
[patent documentation]
No. KR10-1144635, (patent documentation 1)
No. KR10-1069690, (patent documentation 2)
[summary of the invention]
[technical problem]
The object of this invention is to provide in the different display unit of a kind of purposes using LED element and finally make light more effectively export, and the display that reduces the quantity of LED element and improve optical efficiency is with spreading non-spherical lens, to solve described problem.
[technical scheme]
For the problem of the stating the technical solution adopted in the present invention solving is, a kind of diffusion non-spherical lens for the photodistributed display of rectangle that has is provided, this diffusion non-spherical lens is to be applicable to LED light-emitting component determine from the optics mechanism of the light of light-emitting component output, this composition comprises: main body, has both sizings; The plane of incidence, forms at described lower body part face indented central, makes from the light incident of LED light-emitting component output; The first exit facet and the second exit facet, protrude formation separately in described main body upper side central authorities both sides; The 3rd exit facet, forms so that both take the altitude is vertical at the edge of described the first exit facet edge and the second exit facet; Recess, is provided between described the first exit facet and the second exit facet; And fixed part, on described lower body part face, form, and with the described plane of incidence be as the criterion be equipped with a plurality of.
Described the first exit facet and the second exit facet are that aspheric surface meets following mathematical expression from design:
[mathematical expression]
(wherein, H be on optical axis to the distance of vertical direction, the distance that Z=is ordered to the high H its aspheric surface from the tangent plane on aspheric surface summit, the radius of curvature on R=aspheric surface summit, k=circular cone (Conic) constant)
Described the first exit facet and the second exit facet have the refractive index value of 1.4-1.6.
The described plane of incidence is to be as the criterion with section in the plane of described main body, and its section is from forming, and the plane of incidence condition that is equivalent to 0 degree meets 0.4<R<0.9, the condition of-1.5<k<1.
The described plane of incidence is to be as the criterion with section in the plane of described main body, and its section is from forming, and the plane of incidence condition that is equivalent to 25 degree meets 0.5<R<1.0, the condition of-1.5<k<1.
The described plane of incidence is to be as the criterion with section in the plane of described main body, its section is from forming, the condition that is equivalent to the plane of incidence of 60 degree meets 1.0<R<1.5, the condition of-1.5<k<1.
The described plane of incidence is to be as the criterion with section in the plane of described main body, its section is from forming, the condition that is equivalent to the plane of incidence of 90 degree meets 1.7<R<2.2, the condition of-1.5<k<1.
Described the 3rd exit facet is that, along the edge of described the first exit facet and the second exit facet, its amplitude is mutually different on each position.
[beneficial effect]
The beneficial effect of the present invention that forms as mentioned above and play a role is, circular light from LED element output is distributed and changes to rectangle form and to utilizing the optical accessories of LED element very effective, especially, can realize the light outgoing of unchanged (uniformity).
And according to rectangular image output, thereby the quantity of minimizing LED element is conducive to the design of tetragonal display unit.
[accompanying drawing explanation]
Fig. 1 is profile and the back perspective view of diffusion non-spherical lens for the photodistributed display of rectangle that have of the present invention.
Fig. 2 is the plane of diffusion non-spherical lens for the photodistributed display of rectangle that has of the present invention.
Fig. 3 is the profile of diffusion non-spherical lens for the photodistributed display of rectangle that has of the present invention.
Fig. 4 is each profile in diffusion non-spherical lens direction for the photodistributed display of rectangle that has of the present invention.
Fig. 5 to Fig. 8 is the light shooting angle diagram in diffusion non-spherical lens direction for the photodistributed display of rectangle that has of the present invention.
Fig. 9 is the light distribution diagram with the photodistributed non-spherical lens of rectangle of the present invention.
Figure 10 is the luminous intensity distribution distribution map of diffusion non-spherical lens of the present invention.
[symbol description]
100: lens
101: main body
110: the plane of incidence
120: the first exit facets
130: the second exit facets
131: the three exit facets
140: recess
200: fixed part
300:LED element
310:PCB
[specific embodiment]
Below in conjunction with accompanying drawing, to of the present invention have the photodistributed display of rectangle with diffusion non-spherical lens preferred embodiment be described in detail.
The present invention relates to have diffusion non-spherical lens for the photodistributed display of rectangle, this diffusion non-spherical lens determines to be applicable to LED light-emitting component from the optics mechanism of the light of light-emitting component output, and its composition comprises: have both main bodys of sizing; At described lower body part face indented central, form, make from the plane of incidence of the light incident of LED light-emitting component output; The first exit facet of formation is protruded respectively in both sides in described main body upper side central authorities; The second exit facet; Described the first exit facet edge with on the second exit facet edge with both the 3rd exit facets of the vertical formation of take the altitude; Be provided to the recess between described the first exit facet and the second exit facet; On described lower body part face, form and be as the criterion and be equipped with a plurality of fixed parts with the described plane of incidence.
The display with rectangular light issue of the present invention is to possess the plane of incidence (110) forming in main body (101) bottom surface central authorities with diffusion non-spherical lens (10), its composition is included in the first exit facet (120) and the second exit facet (130) that main body upper side central authorities both sides form respectively, and the design of the curvature value of each profile direction plane of incidence of lens is different from the constant of the cone and the non-spherical lens that can realize best optics outgoing is provided.
Fig. 1 is perspective view and the back perspective view of diffusion non-spherical lens for the photodistributed display of rectangle that have of the present invention.As shown in the figure, diffusion non-spherical lens of the present invention (100) is to be as the criterion and to possess exit facet to upper side with both main bodys of sizing (101), and lower face forms the plane of incidence consisting of the groove with the set degree of depth.
Also be that the rectangular part of lens sideway stance is regulated and the core of the rectangular form of ellipse luminous intensity distribution.Diffusion non-spherical lens of the present invention is the integrated or assembly structure of be realizing with the LED potted element of output light, in bottom surfaces, forms with fixed part (200) that both sizing protrudes and fixing or be engaged in external structure thing.
The upper side central authorities of main body have the recess (140) that forms groove, with described recess, are as the criterion and form respectively the first exit facet (120) and the second exit facet (130), refer to following narrating content.
Fig. 2 is the plane of diffusion non-spherical lens for the photodistributed display of rectangle that has of the present invention.In figure, along Plane Angle direction, demonstrate Support Line, the plane of incidence that the section shape face from all angles showing on the explanation Fig. 2 for key diagram 4 is as the criterion has different optical signature mutually.
Fig. 3 is the profile of diffusion non-spherical lens for the photodistributed display of rectangle that has of the present invention.
For diffusion non-spherical lens of the present invention, be described as follows.The bottom surfaces of main body (101) has the plane of incidence (110) being formed by groove, and the central both sides of upper side possess respectively protrudes the first exit facet (120) and the second exit facet (130) forming.With described the first exit facet and the second exit facet, be as the criterion, central authorities form the recess (140) being formed by groove, and light is to be mainly exactly from described the first exit facet and the second exit facet outgoing from the both sides of described recess.
The present invention differently designs the optical characteristics of the plane of incidence according to profile direction and finally exports rectangular light.
Fig. 4 is each profile in diffusion non-spherical lens direction for the photodistributed display of rectangle that has of the present invention.
The design of described non-spherical lens can meet following mathematical expression 1.
[mathematical expression 1]
(wherein, H is the distance of optical axis direction vertical direction, the distance that Z=is ordered to the high H this aspheric surface from the tangent plane on aspheric surface summit, the radius of curvature on R=aspheric surface summit, k=circular cone (Conic) constant)
Radius of curvature and the constant of the cone of the plane of incidence are as follows.
The described plane of incidence is to be as the criterion with the section in plane, the formation of its section, the condition that is equivalent to the plane of incidence of 0 degree is to meet 0.4<R<0.9, the condition of-1.5<k<1, the condition that is equivalent to the plane of incidence of 25 degree is to meet 0.5<R<1.0, the condition of-1.5<k<1, the condition that is equivalent to the plane of incidence of 60 degree is to meet 1.0<R<1.5, the condition of-1.5<k<1, the condition that is equivalent to the plane of incidence of 90 degree is to meet 1.7<R<2.2, the condition of-1.5<k<1.
In other words, that the radius of curvature value of the plane of incidence is differently applicable and determine the form of the light of final outgoing.
In addition, in the present invention, along the edge that is equivalent to described the first exit facet and the second exit facet end, form the 3rd exit facet (131) that determines that luminous intensity distribution distributes and controls.Described the 3rd exit facet is that it has an even surface, and in the positive bottom surface of lens, forms vertical form.
And control the luminous intensity distribution issue shape of described the 3rd exit facet, according to the angle of narrating above i.e. 0 degree, 25 degree, 60 degree, 90 degree, the height of the 3rd exit facet is different.Further illustrate is exactly that the 3rd exit facet is on the position of 25 degree, to have lowest amplitude (from bottom surface to the direction of upper side), is secondly to have higher amplitude at 0 degree, in the position of 60 degree and 90 degree, has amplitude peak.Final result is, light during by the 3rd exit facet and the second exit facet outgoing from the diffusivity of each position adjustments light and roughly control the distributed areas of luminous intensity distribution.
Fig. 5 to Fig. 8 is the diagram of the light shooting angle in diffusion non-spherical lens direction for the photodistributed display of rectangle that has of the present invention.
Thereupon, the shooting angle of lens plane radius is implemented to compensation and final outgoing set be rectangular light.As shown in the figure, determine the angle (being as the criterion with horizontal plane) of distance from the plane of incidence to first, second and third exit facet and exit facet and determine that optimal rectangle luminous intensity distribution distributes.
Fig. 9 is the light distribution diagram with the photodistributed non-spherical lens of rectangle of the present invention, and Figure 10 is the photodistributed diagram of joining with diffusion non-spherical lens of the present invention.As shown in Figure 9 and Figure 10, diffusion non-spherical lens of the present invention is to form along the edge-perpendicular of the first exit facet and the second exit facet, and its height can be different according to radius, thereby the luminous intensity distribution of controlling the light of final outgoing distributes and presents rectangle.
Above preferred embodiment only, in order to principle of the present invention to be described, is not intended to limit; Although structure of the present invention and effect are had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in aforementioned each embodiment, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of technical scheme described in various embodiments of the present invention.Protection scope of the present invention should make an explanation according to following claim scope, and all technical schemes in its equal scope should all belong to claim scope of the present invention.
Claims (8)
1. have a diffusion non-spherical lens for the photodistributed display of rectangle, this diffusion non-spherical lens is to be applicable to LED light-emitting component to determine that this composition comprises from the optics mechanism of the light of light-emitting component output:
Main body, has both sizings;
The plane of incidence, forms at described lower body part face indented central, makes from the light incident of LED light-emitting component output;
The first exit facet and the second exit facet, protrude respectively formation in described main body upper side central authorities both sides;
The 3rd exit facet, forms so that both take the altitude is vertical at the edge of described the first exit facet edge and the second exit facet;
Recess, is provided between described the first exit facet and the second exit facet; And
Fixed part forms on described lower body part face, and with the described plane of incidence be as the criterion be equipped with a plurality of.
2. according to claim 1 have the photodistributed display of rectangle with spreading non-spherical lens, it is characterized in that,
Described the first exit facet and the second exit facet are that aspheric surface meets following mathematical expression from design:
[mathematical expression]
(wherein, H be on optical axis to the distance of vertical direction, the distance that Z=is ordered to the high H its aspheric surface from the tangent plane on aspheric surface summit, the radius of curvature on R=aspheric surface summit, k=circular cone (Conic) constant)
3. according to claim 1 have the photodistributed display of rectangle with spreading non-spherical lens, it is characterized in that,
Described the first exit facet and the second exit facet have the refractive index value of 1.4-1.6.
4. according to claim 1 have the photodistributed display of rectangle with spreading non-spherical lens, it is characterized in that,
The described plane of incidence is to be as the criterion with section in the plane of described main body, and its section is from forming, and the plane of incidence condition that is equivalent to 0 degree meets 0.4<R<0.9, the condition of-1.5<k<1.
5. according to claim 1 have the photodistributed display of rectangle with spreading non-spherical lens, it is characterized in that,
The described plane of incidence is to be as the criterion with section in the plane of described main body, and its section is from forming, and the plane of incidence condition that is equivalent to 25 degree meets 0.5<R<1.0, the condition of-1.5<k<1.
6. according to claim 1 have the photodistributed display of rectangle with spreading non-spherical lens, it is characterized in that,
The described plane of incidence is to be as the criterion with section in the plane of described main body, its section is from forming, the condition that is equivalent to the plane of incidence of 60 degree meets 1.0<R<1.5, the condition of-1.5<k<1.
7. according to claim 1 have the photodistributed display of rectangle with spreading non-spherical lens, it is characterized in that,
The described plane of incidence is to be as the criterion with section in the plane of described main body, its section is from forming, the condition that is equivalent to the plane of incidence of 90 degree meets 1.7<R<2.2, the condition of-1.5<k<1.
8. according to claim 1 have the photodistributed display of rectangle with spreading non-spherical lens, it is characterized in that,
Described the 3rd exit facet is that, along the edge of described the first exit facet and the second exit facet, its amplitude is mutually different on each position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2013-0009982 | 2013-01-29 | ||
| KR1020130009982A KR101458686B1 (en) | 2013-01-29 | 2013-01-29 | Aspheric lens with rectangular light distribution spread for display |
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| Publication Number | Publication Date |
|---|---|
| CN103968327A true CN103968327A (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310177824.1A Pending CN103968327A (en) | 2013-01-29 | 2013-05-14 | Spread aspheric lens with rectangular light distribution spread and for display |
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| KR (1) | KR101458686B1 (en) |
| CN (1) | CN103968327A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106247279A (en) * | 2015-06-03 | 2016-12-21 | 展晶科技(深圳)有限公司 | Lens and light-emitting device thereof |
| CN107085252A (en) * | 2016-02-16 | 2017-08-22 | Lg伊诺特有限公司 | Optical lens and the light emitting module including optical lens |
| CN108180408A (en) * | 2017-11-30 | 2018-06-19 | 北京灵犀微光科技有限公司 | Relay camera lens and lighting system |
| WO2018209487A1 (en) * | 2017-05-15 | 2018-11-22 | 苏州奥浦迪克光电技术有限公司 | Backlight module lens and backlight module formed by same |
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| KR102408719B1 (en) | 2015-02-02 | 2022-06-15 | 쑤저우 레킨 세미컨덕터 컴퍼니 리미티드 | A lens and a light emitting device package including the same |
| KR101875026B1 (en) * | 2017-04-21 | 2018-07-06 | 주식회사 에이치엘옵틱스 | Light distribution lens |
| KR101939550B1 (en) * | 2018-02-07 | 2019-01-17 | 주식회사 에이치엘옵틱스 | Light distribution lens |
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| CN106247279A (en) * | 2015-06-03 | 2016-12-21 | 展晶科技(深圳)有限公司 | Lens and light-emitting device thereof |
| CN106247279B (en) * | 2015-06-03 | 2019-07-09 | 展晶科技(深圳)有限公司 | Lens and its light emitting device |
| CN107085252A (en) * | 2016-02-16 | 2017-08-22 | Lg伊诺特有限公司 | Optical lens and the light emitting module including optical lens |
| CN107085252B (en) * | 2016-02-16 | 2021-03-09 | Lg伊诺特有限公司 | Optical lens and light emitting module including the same |
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| CN108180408A (en) * | 2017-11-30 | 2018-06-19 | 北京灵犀微光科技有限公司 | Relay camera lens and lighting system |
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| Publication number | Publication date |
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| KR101458686B1 (en) | 2014-11-06 |
| KR20140097724A (en) | 2014-08-07 |
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