CN114746921A - Anti-glare lens unit and LED light source system - Google Patents

Anti-glare lens unit and LED light source system Download PDF

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Publication number
CN114746921A
CN114746921A CN201980102681.3A CN201980102681A CN114746921A CN 114746921 A CN114746921 A CN 114746921A CN 201980102681 A CN201980102681 A CN 201980102681A CN 114746921 A CN114746921 A CN 114746921A
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CN
China
Prior art keywords
lens
light
light emitting
emitted
glare
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Pending
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CN201980102681.3A
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Chinese (zh)
Inventor
赵海天
张兵
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Shenzhen University
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Shenzhen University
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Publication of CN114746921A publication Critical patent/CN114746921A/en
Pending legal-status Critical Current

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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
    • 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
    • F21V13/12—Combinations of only three 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
    • 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
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

An anti-glare lens unit (30) and an LED light source system (100) including the anti-glare lens unit (30), the anti-glare lens unit (30) comprising: a condenser lens (40) for condensing and emitting light; and the light splitting lens assembly (50) is formed on the light emitting side of the condenser lens (40), the light splitting lens assembly (50) is provided with light emitting surfaces in at least two light emitting directions, and the light splitting lens assembly (50) is used for changing the direction of light emitted from the condenser lens (40) and then emitting the light along at least two preset light emitting directions.

Description

Anti-glare lens unit and LED light source system Technical Field
The present disclosure relates to the field of semiconductor lighting, and more particularly, to an anti-glare lens unit and an LED light source system including the same.
Background
In the existing LED light source system, besides the light directly projected from the light exit surface, part of the light is transmitted from the periphery of the light exit surface, so that glaring glare is easily generated, and the lens may interfere with vision, even cause discomfort and easily cause visual fatigue.
Disclosure of Invention
The anti-glare lens unit and the LED light source system comprising the same disclosed by the embodiment of the application emit the emergent light along the emergent light surfaces in at least two preset directions after the direction of the emergent light is changed, so that the interference of glare can be prevented.
An anti-glare lens unit comprising: the condensing lens is used for condensing and emitting light rays; and the light splitting lens assembly is formed on the light emitting side of the condenser lens, light emitting surfaces are arranged on the light splitting lens assembly in at least two light emitting directions, and the light splitting lens assembly is used for changing the direction of light emitted from the condenser lens and then emitting the light along at least two preset light emitting directions.
In one embodiment, the beam splitting lens assembly includes a first light emitting surface, a second light emitting surface, a first reflecting surface and a second reflecting surface; and part of the light emitted from the condenser lens is reflected by the first reflecting surface and then emitted from the first light emitting surface, and the other part of the light emitted from the condenser lens is reflected by the second reflecting surface and then emitted from the second light emitting surface.
In an embodiment, the first light-emitting surface and the second light-emitting surface are parallel and opposite to each other, and an extending direction of the first light-emitting surface and the second light-emitting surface is the same as a light-emitting direction of the condensing lens.
In one embodiment, the beam splitting lens assembly comprises a first beam splitting lens and a second beam splitting lens which are oppositely arranged; the first light splitting lens is in a triangular prism shape, and the first reflecting surface and the first light emitting surface are formed on the first light splitting lens; the second light splitting lens is also in a triangular prism shape, and the second reflecting surface and the second light emitting surface are formed on the second light splitting lens.
In one embodiment, the beam splitting lens assembly is an integrated structure and includes a light emitting surface and a reflecting surface; the reflecting surface is a conical surface, and the conical tip of the reflecting surface faces the condenser lens; the light emitting surface surrounds the reflecting surface; and the light emitted from the condensing lens is reflected by the reflecting surface and then annularly emitted from the light emitting surface.
In one embodiment, the light source further comprises a sawtooth lens formed on the light-emitting surface; the sawtooth lens is used for adjusting the direction of the light emitted from the light emitting surface.
In one embodiment, the condenser lens includes: the lens comprises a lens body, a lens cover and a lens, wherein the lens body is provided with an upper surface, a lower surface and an outer peripheral surface which are opposite, and the outer peripheral surface of the lens body is a total reflection surface; the first concave structure is formed by inwards concave the middle part of the lower surface of the lens body and comprises a first arc-shaped bottom surface; the second concave structure is formed by inwards concave the middle part of the upper surface of the lens body and comprises a second arc-shaped bottom surface; the lens body between the first arc-shaped bottom surface and the second arc-shaped bottom surface forms a biconvex lens; the light rays incident from the first arc-shaped bottom surface are collimated by the double convex lens and then are emitted from the second arc-shaped bottom surface; and the light rays incident to the lens body from the side surface of the first concave structure are reflected by the total reflection surface and then are emitted from the upper surface of the lens body.
In one embodiment, the outer peripheral surface of the lens body is a cone-like surface formed by a plurality of planes which are connected and surrounded; the side surfaces of the first concave structure and the second concave structure are cylindrical surfaces or drawing conical surfaces.
An LED light source system comprises a substrate, an LED chip formed on the substrate, and an anti-glare lens unit arranged above a light emitting surface of the LED chip; the light emitted by the LED chip is converged by the condenser lens and then emitted to the light splitting lens assembly, and the direction of the light split lens assembly is changed and then emitted along at least two preset light emitting directions.
The anti-glare lens unit and the LED light source system comprising the same have the advantages that emergent light rays are emitted along at least two preset light emitting directions after the direction of the emergent light rays is changed, and accordingly interference of glare can be prevented.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of an LED light source system according to a first embodiment of the present disclosure.
Fig. 2 is a schematic diagram of a light splitting path of a light splitting lens assembly of an anti-glare lens unit of an LED light source system according to a first embodiment of the present disclosure.
Fig. 3 is a schematic perspective view of an anti-glare lens unit according to a first embodiment of the present application.
Fig. 4 is a schematic perspective view of another viewing angle of the anti-glare lens unit according to the first embodiment of the present application.
Fig. 5 is a schematic side view of an anti-glare lens unit according to a first embodiment of the present application.
Fig. 6 is a schematic bottom view of an anti-glare lens unit according to a first embodiment of the present disclosure.
Fig. 7 is a schematic top view of an anti-glare lens unit according to a first embodiment of the present disclosure.
Fig. 8 is a schematic cross-sectional view of an LED light source system according to a second embodiment of the present application.
Fig. 9 is a schematic top view of an LED light source system according to a second embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 to 8 are schematic views of an LED light source system according to a first embodiment of the present application. The LED light source system 100 includes a substrate 10, an LED chip 20 formed on the substrate 10, and an anti-glare lens unit 30 disposed over a light emitting surface of the LED chip 20.
The anti-glare lens unit 30 includes a condenser lens 40 and a beam splitter lens assembly 50; the condenser lens 40 is used for converging the light emitted by the LED chip 20 and then emitting the converged light; the light splitting lens assembly 50 is formed on the light emitting side of the condenser lens 40, the light splitting lens assembly 50 is provided with light emitting surfaces in at least two light emitting directions, and the light splitting lens assembly 50 is used for changing the direction of the light emitted from the condenser lens 40 and then emitting the light along at least two preset light emitting directions.
In this embodiment, as shown in fig. 1, the condenser lens 40 includes a lens body 41, a first concave structure 42, and a second concave structure 43.
The lens body 41 includes opposing upper and lower surfaces 411, 412, and an outer peripheral surface 413 that surrounds the lens body 41. The outer peripheral surface 413 of the lens body 41 is a total reflection surface. The lens body 41 may be in a truncated cone shape, a truncated cone-like shape, a cone-like shape, and the like as a whole, that is, the outer circumferential surface 413 may be a truncated cone surface, a truncated cone-like surface, a cone-like surface, and the like. For example, the outer circumferential surface 413 of the lens body 41 is a conical-like surface formed by a plurality of planes which are connected and surrounded. In this embodiment, the outer circumferential surface 413 of the lens body 41 is a cone-like surface formed by joining and enclosing a plurality of triangular planes.
In this embodiment, as shown in fig. 3, 5, and 6, the large-size end of the outer circumferential surface 413 further includes two cross sections 4131, the two cross sections 4131 extend from the upper surface 411 to the lower surface 412, and the two cross sections 4131 are opposite to each other and are parallel to the axial direction of the outer circumferential surface 413; the two sections 4131 are used to adjust the light emitted from the condenser lens 40 within a predetermined range. Of course, in other embodiments, the section 4131 may not be formed.
The first concave structure 42 is formed by recessing the middle portion of the lower surface 412 of the lens body 41 inward, and the first concave structure 42 includes a first bottom 421 and a first side 422. The first bottom surface 421 may be a plane or an arc surface; the first side 422 may be a drawing cone or a cylinder. In this embodiment, the first bottom surface 421 is an arc bottom surface, and the first bottom surface 421 protrudes toward the LED chip 20; the first side 422 is a cylindrical surface.
The second concave structure 43 is formed by recessing the middle portion of the upper surface 411 of the lens body 41 inward, and the second concave structure 43 includes a second bottom surface 431 and a second side surface 432. The second bottom surface 431 may be a plane or an arc surface; the second side 432 may be a drawing cone or a cylinder. In this embodiment, the second bottom surface 431 is an arc-shaped bottom surface, and the second bottom surface 431 protrudes in a direction away from the LED chip 20; the second side 432 is a cylindrical surface. The lens body 41 between the first bottom surface 421 and the second bottom surface 431 forms a biconvex lens 44.
Wherein, the light ray incident from the first bottom surface 421 is collimated by the lenticular lens 44 and then exits from the second bottom surface 431; the light entering the lens body 41 from the first side surface 432 of the first concave structure 43 is reflected by the outer peripheral surface 413 and then exits from the upper surface 411 of the lens body 41.
It is understood that the exit surface of the condenser lens 40 may include the upper surface 411 and the second bottom surface 431.
In this embodiment, the beam splitting lens assembly 50 includes a first beam splitting lens 51 and a second beam splitting lens 52. The first and second beam splitting lenses 51 and 52 are each triangular prism-shaped. The first beam splitting lens 51 includes a first reflecting surface 512 disposed obliquely with respect to the upper surface 411, and a first light emitting surface 513 obliquely connected to the first reflecting surface 512 and perpendicular to the upper surface 411. The second beam splitting lens 52 includes a second reflection surface 522 inclined with respect to the upper surface 411, and a second light emitting surface 523 obliquely connected to the second reflection surface 522 and perpendicular to the upper surface 411. The first light emitting surface 513 and the second light emitting surface 523 are disposed opposite to each other, and the first reflecting surface 512 and the second reflecting surface 522 are also disposed opposite to each other. As shown in fig. 2, a part of the light emitted from the exit surface of the condenser lens 40 is reflected by the first reflecting surface 512 and then emitted from the first exit surface 513, and another part of the light emitted from the exit surface of the condenser lens 40 is reflected by the second reflecting surface 522 and then emitted from the second exit surface 523.
In this embodiment, the first reflecting surface 512 and the second reflecting surface 522 are connected at a position flush with the upper surface 411, and the first beam splitting lens 51 and the second beam splitting lens 52 have the same size and are symmetrically disposed with respect to the optical axis center of the condenser lens 40, so that the light output amounts of the first beam splitting lens 51 and the second beam splitting lens 52 are substantially the same. Of course, in other embodiments, the light output ratio of the first and second dichroic lenses 51 and 52 may be made different by adjusting the positions of the first and second dichroic lenses 51 and 52.
In this embodiment, the beam splitter lens assembly 50 has two light emitting surfaces, i.e., the first light emitting surface 513 and the second light emitting surface 523, and the light emitting directions of the first light emitting surface 513 and the second light emitting surface 523 are opposite.
In this embodiment, the first light emitting surface 513 and the second light emitting surface 523 are parallel, and the first light emitting surface 513 and the second light emitting surface 523 are parallel to the optical axis of the condensing lens 40; the first reflecting surface 512 and the first light emitting surface 513 form an included angle of 45 degrees; the second reflecting surface 522 and the second light emitting surface 523 form an included angle of 45 degrees.
In this embodiment, the first light emitting surface 513 and the cross section 4131 on the same side are located on the same plane, and the second light emitting surface 523 and the cross section 4131 on the same side are located on the same plane; of course, in other embodiments, the above arrangement may not be limited.
In other embodiments, the first light emitting surface 513 and the second light emitting surface 523 may also be disposed at an inclined angle; the extending direction of the first light emitting surface 513 and the second light emitting surface 523 may be different from the light emitting direction of the condenser lens 40; the included angle between the first reflecting surface 512 and the first light emitting surface 513 may also be other angles, such as 30 degrees, 60 degrees, and the like, and the included angle between the second reflecting surface 522 and the second light emitting surface 523 may also be other angles, such as 30 degrees, 60 degrees, and the like, where the setting of the included angle may be set according to a required light emitting angle, and details are not described here.
The anti-glare lens unit 30 may further include a diffusion element 60 formed on the light exit surface of the light splitting lens assembly 50, where the diffusion element 60 is configured to adjust the direction of the light emitted from the light exit surface of the light splitting lens assembly 50, for example, the light emitted from the light exit surface of the light splitting lens assembly 50 may be diffused to form a large-area illumination light. The diffusing element 60 may be, for example, a plurality of microstructures, and may be, for example, a saw tooth lens, or the like.
In this embodiment, as shown in fig. 3 to 7, the diffusing element 60 includes a first sawtooth lens 61 and a second sawtooth lens 62. The first sawtooth lens 61 is formed on the first light emitting surface 513, and the first sawtooth lens 61 is used for adjusting the direction of the light emitted from the first light emitting surface 513. The second sawtooth lens 62 is formed on the second light emitting surface 523, and the second sawtooth lens 62 is used for adjusting the direction of the light emitted from the second light emitting surface 523.
The first sawtooth lens 61 includes a plurality of first sawteeth 611, each of the first sawteeth 611 includes a first surface 612 and a second surface 613, the first surface 612 is a plane vertically extending from the first light emitting surface 513, and the second surface 613 is obliquely connected to the first light emitting surface 513 and an end of the first surface 612 away from the first light emitting surface 513; the second sawtooth lens 62 includes a plurality of second sawteeth 621, each of the second sawteeth 621 includes a third surface 622 and a fourth surface 623, the third surface 622 is a plane vertically extending from the second light emitting surface 523, and the fourth surface 623 is obliquely connected to the second light emitting surface 523 and an end of the third surface 622 away from the second light emitting surface 523.
The second surface 613 and the fourth surface 623 may be both planar surfaces or arc surfaces; in this embodiment, the second surface 613 and the fourth surface 623 are both planar.
The anti-glare lens unit 30 in the LED light source system 100 of the present embodiment redirects the light emitted from the condenser lens 40 and then emits the light in two predetermined directions, so that interference of glare can be avoided; also, the anti-glare lens unit 30 in the LED light source system 100 of the present embodiment can obtain the outgoing light rays at a desired angle.
Referring to fig. 8 to fig. 9, schematic cross-sectional views of an LED light source system 100a according to a second embodiment of the present application are shown; the LED light source system 100a of the present embodiment is substantially the same as the LED light source system 100 of the first embodiment, except that: in this embodiment, the light splitting lens assembly 50 is an integrated structure, and includes a light emitting surface 501 and a reflecting surface 502; the reflecting surface 502 is a conical surface, and the conical tip of the reflecting surface 502 is disposed toward the condenser lens 40; the light emitting surface 501 surrounds the reflecting surface 502; the light emitted from the condenser lens 40 is reflected by the reflection surface 502 and then annularly emitted from the light emitting surface 501.
In this embodiment, the light emitting surface 501 is a cylindrical surface, and an axial direction of the cylinder where the light emitting surface 501 is located is the same as a light emitting direction of the condenser lens 40, that is, the light emitting surface 501 is perpendicular to the upper surface 411 of the condenser lens 40.
In other embodiments, the light emitting surface 501 may also be a surface with other shapes, such as a draft cone, and the light emitting surface 501 and the upper surface 411 of the condenser lens 40 may form an inclined angle.
The taper angle of the reflecting surface 502 can be set according to the requirement, and can be, for example, 30 degrees, 45 degrees, 60 degrees, and the like.
In this embodiment, the LED light source system 100a may also include a diffusing element (not shown), which may be, for example, a saw-tooth lens surrounding the light emitting surface 501 for a circle.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and embodiments of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

  1. An anti-glare lens unit, comprising:
    the condensing lens is used for condensing and emitting light rays; and
    the light splitting lens assembly is formed on the light emitting side of the condenser lens, light emitting surfaces are arranged on the light splitting lens assembly in at least two light emitting directions, and the light splitting lens assembly is used for changing the direction of light emitted from the condenser lens and then emitting the light along at least two preset light emitting directions.
  2. The anti-glare lens unit of claim 1, wherein the beam splitting lens assembly comprises first and second light emitting surfaces, first and second reflecting surfaces; and part of the light emitted from the condenser lens is reflected by the first reflecting surface and then emitted from the first light emitting surface, and the other part of the light emitted from the condenser lens is reflected by the second reflecting surface and then emitted from the second light emitting surface.
  3. The anti-glare lens unit according to claim 2, wherein the first light-emitting surface and the second light-emitting surface are parallel to and opposite to each other, and the first light-emitting surface and the second light-emitting surface extend in the same direction as the light-emitting direction of the condenser lens.
  4. An anti-glare lens unit according to claim 3, wherein the beam splitter lens assembly comprises a first beam splitter lens and a second beam splitter lens which are disposed to be opposed; the first light splitting lens is in a triangular prism shape, and the first reflecting surface and the first light emitting surface are formed on the first light splitting lens; the second light splitting lens is also triangular prism-shaped, and the second reflecting surface and the second light emitting surface are formed on the second light splitting lens.
  5. The anti-glare lens unit according to claim 1, wherein the light splitting lens assembly is an integral structure including a light exit surface and a reflection surface; the reflecting surface is a conical surface, and the conical tip of the reflecting surface faces the condenser lens; the light emitting surface surrounds the reflecting surface; the light rays emitted from the condensing lens are reflected by the reflecting surface and then are emitted from the light emitting surface in an annular shape.
  6. The anti-glare lens unit according to claim 5, wherein the light exit surface is a cylindrical surface or a draft cone surface.
  7. The anti-glare lens unit according to claim 1, further comprising a sawtooth lens formed on the light exit surface; the sawtooth lens is used for adjusting the direction of the light emitted from the light emitting surface.
  8. The anti-glare lens unit according to claim 1, wherein the condenser lens comprises:
    the lens comprises a lens body, a lens cover and a lens, wherein the lens body is provided with an upper surface, a lower surface and an outer peripheral surface which are opposite, and the outer peripheral surface of the lens body is a total reflection surface;
    the first concave structure is formed by inwards concave the middle part of the lower surface of the lens body and comprises a first arc-shaped bottom surface; and
    the second concave structure is formed by inwards concave the middle part of the upper surface of the lens body and comprises a second arc-shaped bottom surface;
    the lens body between the first arc-shaped bottom surface and the second arc-shaped bottom surface forms a biconvex lens;
    the light rays incident from the first arc-shaped bottom surface are collimated by the double convex lens and then are emitted from the second arc-shaped bottom surface; and the light rays incident to the lens body from the side surface of the first concave structure are reflected by the total reflection surface and then are emitted from the upper surface of the lens body.
  9. An anti-glare lens unit according to claim 7, wherein the outer circumferential surface of the lens body is a cone-like surface formed by a plurality of planes that are joined and surrounded; the side surfaces of the first concave structure and the second concave structure are cylindrical surfaces or drawing conical surfaces.
  10. An LED light source system comprising a substrate, an LED chip formed on the substrate, and the anti-glare lens unit according to any one of claims 1 to 9 provided over a light emitting surface of the LED chip; the light emitted by the LED chip is converged by the condenser lens and then emitted to the light splitting lens assembly, and the direction of the light split lens assembly is changed and then emitted along at least two preset light emitting directions.
CN201980102681.3A 2019-12-23 2019-12-23 Anti-glare lens unit and LED light source system Pending CN114746921A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/127389 WO2021127838A1 (en) 2019-12-23 2019-12-23 Anti-dazzle lens unit and led light source system

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Publication Number Publication Date
CN114746921A true CN114746921A (en) 2022-07-12

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WO (1) WO2021127838A1 (en)

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Publication number Priority date Publication date Assignee Title
JP2006302713A (en) * 2005-04-21 2006-11-02 Koito Mfg Co Ltd Vehicle head-lamp
CN101900293A (en) * 2010-07-30 2010-12-01 海洋王照明科技股份有限公司 Condenser lens and lamp using same
CN103988110A (en) * 2011-12-13 2014-08-13 皇家飞利浦有限公司 Optical collimator for led lights
CN104075236A (en) * 2013-03-28 2014-10-01 海洋王（东莞）照明科技有限公司 Light distribution system and lighting device provided with same
CN104392618A (en) * 2014-10-16 2015-03-04 杭州意博高科电器有限公司 Design method of anti-dazzle LED lamp
CN105371216A (en) * 2015-11-05 2016-03-02 深圳大学 Integrated anti-glare system for vehicle headlamp
CN207935996U (en) * 2018-02-09 2018-10-02 苏州东灿光电科技有限公司 A kind of collector lens of anti-dazzle
CN208997995U (en) * 2018-10-30 2019-06-18 漳州立达信灯具有限公司 A kind of lens and light bar

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Application publication date: 20220712