CN105546484B - A kind of collimation light generating apparatus based on LED light source - Google Patents
A kind of collimation light generating apparatus based on LED light source Download PDFInfo
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- CN105546484B CN105546484B CN201511023175.5A CN201511023175A CN105546484B CN 105546484 B CN105546484 B CN 105546484B CN 201511023175 A CN201511023175 A CN 201511023175A CN 105546484 B CN105546484 B CN 105546484B
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- 238000010586 diagram Methods 0.000 description 10
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- 238000005516 engineering process Methods 0.000 description 3
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
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- Engineering & Computer Science (AREA)
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- Planar Illumination Modules (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of collimation light generating apparatus based on LED light source, including light emitting device and reflection unit, feature is that reflection unit is provided with parabolic type reflecting surface, light emitting device is arranged in the focus of parabolic type reflecting surface, deflection of light collimator apparatus is provided on the light direction of reflection unit, deflection of light collimator apparatus includes cuboid substrate and multiple prisms being disposed in parallel in cuboid substrate, cuboid substrate and prism are optics integral structure, prism surfaces as deflection of light collimator apparatus incidence surface towards reflection unit, light-emitting surface of the surface of cuboid substrate as deflection of light collimator apparatus, advantage is can be under very high efficiency, realize the collimation of light, and form a complete hot spot.
Description
Technical field
The present invention relates to a kind of optical collimators, more particularly, to a kind of collimation light generating apparatus based on LED light source.
Background technique
LED itself has the advantages that low-power consumption, high brightness, water, shock, and with the high speed development of LED industry, skill
Leap in art is broken through, and the application prospect of LED is more and more wide, be deep into from illuminate to showing etc. lives just in terms of
Face.Therefore, the requirement for the collimation of LED light source and efficiency is also higher and higher.Such as Gao Zhun is just needed in LED backlight field
The LED light source directly spent.Simultaneously in some special lightings, such as submarine light etc., it is also desirable to high collimation, efficient LED light
Source.But due to the limitation of LED shape itself and technology, it is necessary to which efficient collimating components help LED light source to reach this
One requires.
Current LED collimation component is substantially lens type collimating components.The advantages of this base part be it is simple and easy, still
Collimating effect is bad, and can only collimate to single led, if increasing LED quantity, collimating effect and efficiency will be rapidly
Decline, it is impossible to be used in the fields such as the backlight more demanding for efficiency and collimation and special lighting.
On September 12nd, 2005 patent of invention CN101023295 propose a kind of LED collimation based on parabolic reflecting surface
Device, as shown in Figure 1.The LED collimation device includes a LED light source 1 and a reflector 7, the right view packet of the reflector
Focus 5, the plane of incidence 9 and the recessed reflecting surface 8 of semi-parabolic are included, right view stretches the reflector thus.Such as Fig. 2, LED light source
1 light issued is irradiated on the recessed reflecting surface 8 of semi-parabolic of reflector 7, and after its surface is reflected, all light are flat
Row is in the parabolical symmetry axis, i.e., parallel with horizontal line.The light that LED light source issues passes through the collimator designed in this patent
Part has preferable collimating effect.
But collimating element designed by the patent, parabola has been only focused on for the sharp cut-off characteristic of LED light, though
Single LED light source can so be collimated, but obtained hot spot top edge light intensity is higher and neat, but lower edge light intensity compared with
It is low and at random, therefore obtained light collimation and uniformity and bad after collimating, cannot reach some special lighting equipment or
The high collimation of backlight, the requirement of high uniformity.The patent has only focused on the collimation of the light on one-dimensional simultaneously, in the two-dimensional direction
Light do not obtain good collimating effect.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of light collimation and uniformity are good, it can reach some special
The collimation light generating apparatus based on LED light source of the requirement of the high collimation, high uniformity of lighting apparatus or back light apparatus.
The present invention solves technical solution used by above-mentioned technical problem：A kind of collimated light generation based on LED light source
Device, including light emitting device and reflection unit, the reflection unit are provided with parabolic type reflecting surface, the light emitting device
It is arranged in the focus of the parabolic type reflecting surface, deflection of light standard is provided on the light direction of the reflection unit
Straight device, the deflection of light collimator apparatus include cuboid substrate and multiple are disposed in parallel in the cuboid substrate
Prism, the cuboid substrate and prism are optics integral structure, and the prism surfaces are as the light
The incidence surface of deviation collimator apparatus is towards the reflection unit, and the surface of the cuboid substrate is as the deflection of light
The light-emitting surface of collimator apparatus.
The parabolic type reflecting surface includes two symmetrically arranged paraboloids, and the paraboloid is by parabola along three
The crest line direction of prism, which extends, to be constituted, and the angle of two parabola symmetry axis is that light emitting device described in 30 ° to 150 ° includes two
A light emitting array being separately positioned on two paraboloidal focus lines, the light emitting array is by multiple along crest line direction point
The LED light source of cloth forms, and the plane of the light source is parallel with two parabolical symmetry axis.
The parabolic type reflecting surface is two extended around the vertical wire loop in the center of two parabolical point of intersection
Symmetrical annular paraboloid, all parabolical focus lines are two semicircle loop wires, and the light emitting device is arranged symmetrically
At least two LED light sources on the focus line.
The section of the prism is triangle, and each interior angle of the triangle is 30 ° to 120 °, described
Triangle stretches prism thus.
It is provided with one-dimensional lens array between the light emitting device and the parabolic type reflecting surface, described is one-dimensional
Lens array is made of multiple arch lens being set side by side on the base, the orientation of the arch lens and described
The extending direction of prism is consistent.
Compared with the prior art, the advantages of the present invention are as follows can realize the collimation of light under very high efficiency, and formed
One complete hot spot.If this technology is used in LED backlight collimation, the light reasonably group that LED light source can be issued
It closes and utilizes, greatly improve the efficiency and brightness of LED backlight.If this technology is used in special lighting system, can make
Multiple light sources obtain rationally efficient distribution superposition, and light collimation is higher out, and energy loss is few, can make lesser light intensity
Far distance is traveled to, the illumination distances of lighting system are greatly improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of prior art parabolic shape LED collimation device；
Fig. 2 is the light-out effect figure of prior art parabolic shape LED collimation device；
Fig. 3 is the schematic perspective view of the embodiment of the present invention one；
Fig. 4 is the planar structure schematic diagram of the embodiment of the present invention one；
Fig. 5 is the parabolic type reflection unit of the embodiment of the present invention one and the planar structure schematic diagram of light emitting device；
Fig. 6 is the planar structure schematic diagram of the deflection of light collimator apparatus of the embodiment of the present invention one, wherein (a) is whole knot
Structure schematic diagram is (b) planar structure schematic diagram of single prism；
Fig. 7 is that the light of the embodiment of the present invention one moves towards one of floor map；
Fig. 8 is that the light of the embodiment of the present invention one moves towards the two of floor map；
Fig. 9 is the planar structure schematic diagram of the embodiment of the present invention two；
Figure 10 is the structural schematic diagram of the one-dimensional lens array of the embodiment of the present invention two, wherein (a) is stereochemical structure signal
Figure (b) is planar structure schematic diagram；
Figure 11 is that the light of the embodiment of the present invention two moves towards schematic diagram；
Figure 12 is the schematic perspective view of the embodiment of the present invention three.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment one：As shown in Fig. 3~Fig. 8, a kind of collimation light generating apparatus based on LED light source, including light emitting device
With reflection unit 3, deflection of light collimator apparatus 4 is provided on the light direction of reflection unit 3, deflection of light collimator apparatus 4 wraps
Include cuboid substrate 42 and multiple prisms 41 being disposed in parallel in cuboid substrate 42, cuboid substrate 42 and prism 41
For optics integral structure, the section of prism 41 is triangle, and the variation range of each interior angle of triangle is 30 ° to 120 °,
Triangle stretches prism thus, and 41 surface of prism is filled as the incidence surface of deflection of light collimator apparatus 4 towards reflection
3 are set, light-emitting surface of the surface of cuboid substrate 42 as deflection of light collimator apparatus 4, it is anti-that reflection unit 3 is provided with parabolic type
Face 3 is penetrated, parabolic type reflecting surface 3 includes two symmetrically arranged paraboloids 31 and 32, and paraboloid 31 and 32 is by parabola along three
The crest line direction of prism 41, which extends, to be constituted, and two parabolical symmetry axis are 311,321, the angle of two symmetry axis 311 and 321
Range is 30 ° to 150 °, and light emitting device includes two be separately positioned on the line of two paraboloidal focuses 312 and 322
Light emitting array 1 and 2, light emitting array 1 and 2 are made of the LED light source of multiple crest line directional spredings along prism 41, and light source is put down
Face is parallel with symmetry axis 311 or 321, it is contemplated that the actual size size of LED light source, the placement of LED light source should ensure that major part
Light is projected in parabolic segment focal point.
Such as Fig. 7, LED light source 1, by its midpoint, that is, focal point sending light, rim ray is irradiated to just
In the two-end-point of parabolic segment 31.After light shines in parabolic segment 31, reflected on parabolic segment surface, the light after reflection
Line is most of parallel with this parabolical symmetry axis, these light are emitted onto the correspondence zigzag of deflection of light collimator apparatus 4
One side surface on surface, light inject prism 41 in, at this point, the ranges of incidence angles of light be 60 ° to 90 °, with prism
The angular range of another side surface of corresponding serrated-surface 41 is 50 ° to 90 °, and (optical material refractive index is about 1.5, air folding
The rate of penetrating is about 1), according to the law of refraction, to be totally reflected here, and light is irradiated to the light-emitting surface of cuboid substrate 42 later,
Light collimation outgoing.
So far, this LED collimation component completes the collimation in one-dimensional square, and the light being irradiated on reflecting surface can go out
Smooth surface collimation outgoing, therefore, the device has good collimating effect in one-dimensional direction at this time.But in another dimension side
Upwards, i.e., on right view direction, the light being irradiated on reflecting surface cannot be collimated in light-emitting surface and is emitted.Such as Fig. 8, parabolic type
Reflecting surface 3 is a rectangle, and deflection of light collimator apparatus 4 is also a rectangle, with any one LED in row's LED light source
For light source, the light 01 and 02 in this 11 two sides of LED light source middle line is irradiated on parabolic type reflecting surface 3, is reflected, light
Line 01 and 02 is not collimated after reflecting, and injects the zigzag lower surface of deflection of light collimator apparatus 4 at an angle
On, it reflects here, light 01 and 02 is totally reflected in the lower surface other side later, due to the range of incidence angle at this time
Not necessarily within 60 ° to 90 °, the light after being totally reflected cannot be collimated in light-emitting surface to be emitted, therefore, in this dimension,
I.e. on right view direction, light is not collimated.
Embodiment two：As shown in Fig. 9~Figure 11, other structures are the same as example 1, the difference is that light emitting array 1
It is provided with one-dimensional lens array 5 between paraboloid 31, one-dimensional lens array 6 is provided between light emitting array 2 and paraboloid 32,
One-dimensional lens array 5 and 6 is made of multiple arch lens 52 being disposed in parallel on pedestal 51, the orientation of arch lens 52
It is consistent with the extending direction of prism 41.
Such as Figure 11, before one-dimensional lens array is added, the light 01 and 02 in 11 two sides of middle line of a LED light source is irradiated to
It on parabolic type reflecting surface 3, reflects, light 01 and 02 is not collimated after reflecting, at an angle incident light
It on the zigzag lower surface of line deviation collimator apparatus 4, reflects here, light 01 and 02 is sent out in the lower surface other side later
Raw total reflection (or refraction), since the range of incidence angle at this time is not necessarily between 60 ° to 90 °, emergent ray is not collimated,
As shown in phantom in FIG.；After one-dimensional lens array is added, 11 two sides of middle line of a LED light source light 01 and 02 first according to
It penetrates on one-dimensional lens array, refraction (optical material refractive index is about 1.5) occurs on the incidence surface of pedestal 51, it is fixed according to refraction
Rule, the deviation to the right of light 01, the deviation to the left of light 02 reflect on arch lens 52 again later, according to the law of refraction,
The deviation to the right again of light 01, the deviation to the left again of light 02, is irradiated to the light of parabolic type reflecting surface 3 later, more approaches
In the middle line 11 of LED light source, light 01 and 02 reflects here, injects deflection of light collimation dress at an angle later
It sets on 4 zigzag lower surface, the incidence angle of light 01 and 02 is greater than the incidence angle before placing one-dimensional lens array at this time,
Therefore closer to vertical incidence, after light reflects here, deviation angle very little, light 01 and 02 is in lower surface later
Total reflection (or refraction) occurs for the other side, and incidence angle more approaches between 60 ° to 90 ° at this time, therefore emergent ray more levels off to standard
Directly, as shown by the solid line in the drawings；Therefore, after one-dimensional lens array is added, on right view direction, emergent ray dispersion angle drop
Low, collimation of the final light on the light-emitting surface of cuboid substrate 42 is higher.
Embodiment three：As shown in figure 12, other structures are identical as embodiment one or two, the difference is that parabolic type is anti-
Penetrating face 3 is the two symmetrical annular paraboloids extended around the vertical wire loop in the center of two parabolical point of intersection, all throwings
The focus line of object line is two semicircle loop wires, and light emitting device is two LED lights being symmetricly set on the focus line
Source 1 and 2.
Claims (4)
1. a kind of collimation light generating apparatus based on LED light source, including light emitting device and reflection unit, it is characterised in that described
Reflection unit is provided with parabolic type reflecting surface, and the parabolic type reflecting surface includes two symmetrically arranged paraboloids, institute
The paraboloid stated, which is extended by parabola along the crest line direction of prism, to be constituted, and the angle of two parabola symmetry axis is 30 ° and arrives
150 °, the light emitting device includes two light emitting arrays being separately positioned in two paraboloidal focuses, and described shines
Array is made of multiple LED light sources along crest line directional spreding, and the plane of the light source is flat with two parabolical symmetry axis
It goes, is provided with deflection of light collimator apparatus, the deflection of light collimator apparatus packet on the light direction of the reflection unit
Include cuboid substrate and multiple prisms being disposed in parallel in the cuboid substrate, the cuboid substrate and prism
For optics integral structure, the prism surfaces as the deflection of light collimator apparatus incidence surface towards described anti-
Injection device, light-emitting surface of the surface of the cuboid substrate as the deflection of light collimator apparatus.
2. a kind of collimation light generating apparatus based on LED light source, including light emitting device and reflection unit, it is characterised in that described
Reflection unit is provided with parabolic type reflecting surface, and the parabolic type reflecting surface is around the center of two parabolical point of intersection
Two symmetrical annular paraboloids that vertical wire loop extends, all parabolical focus lines are two semicircle loop wires, described
Light emitting device be at least two LED light sources being symmetricly set in the focus, the light direction of the reflection unit
On be provided with deflection of light collimator apparatus, the deflection of light collimator apparatus includes cuboid substrate and multiple is disposed in parallel in
Prism in the cuboid substrate, the cuboid substrate and prism are optics integral structure, the prism
Surface as the deflection of light collimator apparatus incidence surface towards the reflection unit, the surface of the cuboid substrate
Light-emitting surface as the deflection of light collimator apparatus.
3. a kind of collimation light generating apparatus based on LED light source as claimed in claim 1 or 2, it is characterised in that described three
The section of prism is triangle, and each interior angle of the triangle is 30 ° to 120 °, prism triangle thus
It stretches.
4. a kind of collimation light generating apparatus based on LED light source as claimed in claim 1 or 2, it is characterised in that the hair
Be provided with one-dimensional lens array between electro-optical device and the parabolic type reflecting surface, the one-dimensional lens array by it is multiple simultaneously
The arch lens composition of column setting on the base, the extending direction of the orientation of the arch lens and the prism
Unanimously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511023175.5A CN105546484B (en) | 2015-12-31 | 2015-12-31 | A kind of collimation light generating apparatus based on LED light source |
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| CN201511023175.5A CN105546484B (en) | 2015-12-31 | 2015-12-31 | A kind of collimation light generating apparatus based on LED light source |
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| CN105546484A CN105546484A (en) | 2016-05-04 |
| CN105546484B true CN105546484B (en) | 2018-11-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11920967B2 (en) * | 2018-11-19 | 2024-03-05 | Kyocera Corporation | Optical fluid detection sensor for detecting flow of immiscible slug flow in a fluid detection device |
| CN117739301B (en) * | 2024-02-21 | 2024-04-26 | 浙江锦德光电材料有限公司 | Collimation assembly for limiting light angle and light source device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4510560A (en) * | 1981-04-20 | 1985-04-09 | Masataka Negishi | Device for controlling light images |
| CN1721758A (en) * | 2004-05-14 | 2006-01-18 | C.R.F.阿西安尼顾问公司 | Module for projecting a light beam |
| CN102162625A (en) * | 2011-01-30 | 2011-08-24 | 深圳市众明半导体照明有限公司 | Large-angle LED and LED lamp |
| CN103322503A (en) * | 2012-03-19 | 2013-09-25 | 展晶科技(深圳)有限公司 | Optical lens and LED lamp source device using same |
| CN203642077U (en) * | 2014-01-10 | 2014-06-11 | 刘炜斌 | Optical lens |
-
2015
- 2015-12-31 CN CN201511023175.5A patent/CN105546484B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4510560A (en) * | 1981-04-20 | 1985-04-09 | Masataka Negishi | Device for controlling light images |
| CN1721758A (en) * | 2004-05-14 | 2006-01-18 | C.R.F.阿西安尼顾问公司 | Module for projecting a light beam |
| CN102162625A (en) * | 2011-01-30 | 2011-08-24 | 深圳市众明半导体照明有限公司 | Large-angle LED and LED lamp |
| CN103322503A (en) * | 2012-03-19 | 2013-09-25 | 展晶科技(深圳)有限公司 | Optical lens and LED lamp source device using same |
| CN203642077U (en) * | 2014-01-10 | 2014-06-11 | 刘炜斌 | Optical lens |
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Effective date of registration: 20200326 Address after: 238261 Guangna standardized workshop 9 and 10, zhengpugang New District, Ma'anshan City, Anhui Province Patentee after: Ma'anshan Jingzhi Technology Co., Ltd Address before: 215125, Suzhou, Jiangsu province Suzhou Industrial Park alone villa lake high Parish, if the waterway 398 Patentee before: SUZHOU CRYSTALENT Co.,Ltd. |