CN104765136A - optical collimated system for circular LED area light source - Google Patents
optical collimated system for circular LED area light source Download PDFInfo
- Publication number
- CN104765136A CN104765136A CN201510103556.8A CN201510103556A CN104765136A CN 104765136 A CN104765136 A CN 104765136A CN 201510103556 A CN201510103556 A CN 201510103556A CN 104765136 A CN104765136 A CN 104765136A
- Authority
- CN
- China
- Prior art keywords
- lens
- optical system
- plano
- led area
- convex lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention relates to an optical collimated system for a circular LED area light source, and belongs to the technical field of LED packaging and application. The optical collimated system for the circular LED area light source comprises an aspheric reflecting surface, a collimating lens group composed of a planoconvex lens and a biconvex lens and a transparent flat plate. The whole optical collimated system is rotationally symmetric about the center axis of the system. The rear surface of the biconvex lens is aspheric, and the aspheric reflecting surface makes all light rays illuminating on the aspheric reflecting surface emit directly without passing through a collimating lens. The collimating lens group makes all light rays illuminating on the collimating lens group emit after being refracted. The transparent flat plate is connected with an outer reflecting surface and the middle collimating lens and plays the role to fix the collimating lens, and the transparent flat plate does not change the direction of light ray illuminating on the transparent flat plate. The length of the whole optical collimated system is 19.00 mm, and the diameter of a light-emitting hole is 29.32 mm. The LED area light source is arranged at the position 4 mm far away from the front surface of the planoconvex lens, the biggest semi-field angle of the emergent ray emitted from the circular LED area light source with the diameter of 1 mm after passing through the optical system is 4.300, the efficiency for solar energy utilization can reach 100% taking the Fresnel loss and the material absorption into account, and a circular illuminating area with bright center and darker edge can be formed in a distant field.
Description
Technical field
The non-imaging system that the present invention relates to optical lens and be made up of camera lens, specifically refer to the optical system for LED light source collimation, diameter is the light that sends of 1 mm circular LED light source under the condition not having energy loss (disregard Fresnel loss and material absorbs) maximum half field angle of emergent ray from ± 85 by this optical system
0be compressed to ± 4.30
0, belong to light-emitting diode packaging technology field.
Background technology
Current LED light source colimated light system adopts catadioptric hybrid free form surface combined system mostly, the free form surface reflector of this system primarily of outside and the free-form surface lens composition of centre, the part that this structure makes LED outgoing beam be radiated on reflector realizes collimation by reflection, and the part be radiated on free-form surface lens realizes collimation by refraction.This free form surface is between luminous point and lighting point, set up a kind of geometric maps relation, thereafter according to the vector form of catadioptric law, build a complex set of mathematical formulae and find refraction point or reflection spot, these refraction points or reflection spot are exactly the discrete point of structure free form surface.
Free form surface has certain approximation, and one is the approximation solved by mathematical computations in discrete point process, and two is the approximation in free form surface building process, moreover the processing cost of free form surface is higher.Therefore, reduce approximation, cut down finished cost just aobvious particularly important.
Summary of the invention
The present invention seeks to by improving the catadioptric colimated light system of above-mentioned LED, free form surface is changed into sphere or aspheric surface, structurally suitably adjust simultaneously, can make the LED emergent light angle of divergence from ± 85 ° be compressed to ± 4.3 °, and the efficiency of light energy utilization reaches 100% within ± 4.3 °.
Colimated light system structure of the present invention as shown in Figure 1, the collimation lens set that colimated light system is made up of the high order aspheric surface (1) in outside, middle plano-convex lens (2) and biconvex lens (3), the fixing transparent plate (4) of plano-convex lens and the transparent plate (5) of fixing biconvex lens form, and described optical system is about its central shaft Rotational Symmetry.
The illumination sent from LED light source (6) be mapped to the part of middle plano-convex lens (2) after lens (2) and (3) refraction ± 4.30
0within field angle outgoing, be irradiated to the directly outgoing without the collimation lens (2) of centre and (3) after reflection of reflecting surface outside optical system (1) part, fix the direction that the transparent plate (4) of collimation lens and (5) do not change light.
Preferably, described plano-convex lens (2) is surrounded by front surface (21), rear surface (22), side surface (23); Front surface is plane, and be highly 8 mm, rear surface is sphere, and be highly 9.24 mm, side surface is the frustum cone side of connection two sphere, and before and after round table surface, the diameter of two bottom surfaces is respectively 8 mm, 9.24 mm.
Preferably, described lenticular lens (3) are surrounded by front surface (31), rear surface (32), side surface (33); Front surface is sphere, is highly 11.08 mm, and rear surface is aspheric surface, and be highly 11.32 mm, side surface is the frustum cone side of connection two sphere, and before and after round platform, the diameter of two bottom surfaces is respectively 11.08 mm, 11.32 mm.
Preferably, described outside high order aspheric surface (1) and the rear surface (32) of biconvex lens (3) should meet the requirement of aspherical formula (1):
（1）
Wherein,
dfor aspheric surface summit
xcoordinate figure,
cfor aspheric surface vertex curvature,
for the coefficient of aspherical equation,
, these parameters should get the value in table 1
。
Preferably, the spherical radius parameter of described plano-convex lens (2) and lenticular lens (3) and distance parameter get the data in table 2
。
Preferably, LED chip is placed at the front 4.0mm place of front surface (21) of described plano-convex lens (2), and the maximum light-emitting area of chip is the rounded face of diameter 1 mm.
Preferably, the material of the non-spherical reflector of described outside high order (1), plano-convex lens (2) and lenticular lens (3) is ACRYLIC, and refractive index is 1.520.
Preferably, the thickness of the fixing transparent plate (4) of plano-convex lens and the transparent plate (5) of fixing biconvex lens is between 0.2mm ~ 0.5mm, material is ACRYLIC, transparent plate (4) is positioned at the right-hand member of plano-convex lens (2) side surface (23), transparent plate (5) is positioned at the centre of biconvex lens (3) side surface (33), and two flat boards are all perpendicular to optical axis.
The advantage of this optical system is: 1. in system, part curved surface is aspheric surface, compares free form surface, has the equation determined.Collimation lens set in the middle of system forms primarily of spherical mirror, and processing is simple.2. after LED emergent light the angle of divergence by ± 85 ° be compressed to ± 4.30 °, the efficiency of light energy utilization (disregard Fresnel loss and material absorb) reaches 100%; 3. material adopts ACRYLIC, is conducive to processing, assembling and mass production.
Accompanying drawing explanation
Fig. 1 is optical system structure schematic diagram of the present invention;
Fig. 2 is the schematic three dimensional views of optical system structure of the present invention;
Fig. 3 optical system ingredient and related physical quantity indicate;
Fig. 4 LED emits beam and the several special intersection point of colimated light system;
The light path simulation of the light that Fig. 5 LED light source sends reflecting surface outside system
The light path simulation of the light that Fig. 6 LED light source sends collimation lens in the middle of system;
The light that Fig. 7 LED light source sends is simulated through the light path of whole colimated light system;
Fig. 8 LED after colimated light system
xthe lighting simulation figure at=6 m places;
Fig. 9 exists
xthe Two dimensional Distribution of light intensity on=6 m place perpendicular planes;
Figure 10 exists
xthe distributed in three dimensions of light intensity on=6 m place perpendicular planes;
Figure 11 exists
xhot spot on=6 m place perpendicular planes;
Reference numeral is as follows:
In figure:
D
lfor LED light source (6) and the axial distance of plano-convex lens (2) front surface;
D
2plano-convex lens (2) front and rear surfaces along wheelbase from, i.e. thickness on the axle of plano-convex lens (2);
D
3biconvex lens (3) front and rear surfaces along wheelbase from, i.e. thickness on the axle of biconvex lens (3);
R21 is the radius-of-curvature of plano-convex lens (2) front surface (21);
R22 is the radius-of-curvature of plano-convex lens (2) rear surface (22);
R31 is the radius-of-curvature of biconvex lens (3) front surface (31);
Embodiment
Devise the system architecture as shown in Fig. 1, as shown in Table 3, 4, the technical indicator of this system is as shown in table 5 for this optical system specific design parameter, and the circular LED light source for diameter 1 mm and smaller szie collimates.
This system the angle of divergence of the round LED emergent ray of diameter 1 mm from ± 85 ° be compressed to ± 4.30
0if disregard Fresnel loss and material absorption, the efficiency of light energy utilization can reach 100%, and from LED 6 m at a distance, the circular light forming Radius about 0.475 m illuminates spot, the center brightness of speck is slightly strong, and edge is slightly weak.
Transparent plate (4) is positioned at the right-hand member of plano-convex lens (2) side surface (23), and transparent plate (5) is positioned at the centre of biconvex lens (3) side surface (33), and two flat boards are all perpendicular to optical axis, and the thickness of two transparent plates is all between 0.2mm ~ 0.5mm.
The material of whole system is all ACRYLIC, and refractive index is 1.520.
Claims (8)
1. the collimating optical system for round LED area source, it is characterized in that: comprise collimation lens set, the fixing transparent plate (4) of plano-convex lens and the transparent plate (5) of fixing biconvex lens that the high order aspheric surface (1) in outside, middle plano-convex lens (2) and biconvex lens (3) form, described optical system is about its central shaft Rotational Symmetry; The part that the illumination sent from LED light source (6) is mapped to middle plano-convex lens (2) after lens (2) and (3) refraction with ± 4.30
0within field angle outgoing, the part being irradiated to reflecting surface outside optical system (1) is the directly outgoing without the collimation lens (2) of centre and (3) after reflection, and the transparent plate (4) of fixing collimation lens and (5) do not change the direction of light.
2. a kind of collimating optical system for round LED area source as claimed in claim 1, is characterized in that: described plano-convex lens (2) is surrounded by front surface (21), rear surface (22), side surface (23); Front surface is plane, and be highly 8 mm, rear surface is sphere, and be highly 9.24 mm, side surface is the frustum cone side of connection two sphere, and before and after round platform, the diameter of two bottom surfaces is respectively 8 mm, 9.24 mm.
3. a kind of collimating optical system for round LED area source as claimed in claim 1, is characterized in that: described lenticular lens (3) are surrounded by front surface (31), rear surface (32), side surface (33); Front surface is sphere, is highly 11.08 mm, and rear surface is aspheric surface, and be highly 11.32 mm, side surface is the frustum cone side of connection two sphere, and before and after round platform, the diameter of two bottom surfaces is respectively 11.08 mm, 11.32 mm.
4. a kind of collimating optical system for round LED area source as described in claim 1 and 3, is characterized in that: described outside high order aspheric surface (1) and the rear surface (32) of biconvex lens (3) should meet the requirement of aspherical formula (1):
（1）
Wherein,
dfor aspheric surface summit
xcoordinate figure,
cfor aspheric surface vertex curvature,
for the coefficient of aspherical equation,
, these parameters should get the value in table 1
。
5. a kind of collimating optical system for round LED area source as described in claim 1 and 2 and 3, is characterized in that: the spherical radius parameter of described plano-convex lens (2) and lenticular lens (3) and distance parameter get the data in table 2
。
6. a kind of collimating optical system for round LED area source as claimed in claim 1, is characterized in that: LED chip is placed at the front 4.0mm place of front surface (21) of described plano-convex lens (2), and the maximum light-emitting area of chip is the rounded face of diameter 1 mm.
7. a kind of collimating optical system for round LED area source as claimed in claim 1, is characterized in that: the material of the non-spherical reflector of described outside high order (1), plano-convex lens (2) and lenticular lens (3) is ACRYLIC, and refractive index is 1.520.
8. a kind of collimating optical system for round LED area source as claimed in claim 1, it is characterized in that: the thickness of the fixing transparent plate (4) of plano-convex lens and the transparent plate (5) of fixing biconvex lens is between 0.2 mm ~ 0.5 mm, material is ACRYLIC, transparent plate (4) is positioned at the right-hand member of plano-convex lens (2) side surface (23), transparent plate (5) is positioned at the centre of biconvex lens (3) side surface (33), and two flat boards are all perpendicular to optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103556.8A CN104765136A (en) | 2015-03-10 | 2015-03-10 | optical collimated system for circular LED area light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103556.8A CN104765136A (en) | 2015-03-10 | 2015-03-10 | optical collimated system for circular LED area light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104765136A true CN104765136A (en) | 2015-07-08 |
Family
ID=53647070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510103556.8A Pending CN104765136A (en) | 2015-03-10 | 2015-03-10 | optical collimated system for circular LED area light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104765136A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106444067A (en) * | 2016-08-30 | 2017-02-22 | 京东方科技集团股份有限公司 | Light collimation structure, substrate and manufacturing method, backlight module group and display apparatus |
| CN106568045A (en) * | 2016-08-19 | 2017-04-19 | 广东雷腾智能光电有限公司 | Method for designing area source rectangular spot lenses and vehicle lamp |
| CN107726096A (en) * | 2017-09-11 | 2018-02-23 | 华南师范大学 | The visible light projection system of remote LED |
| CN117784512A (en) * | 2024-02-26 | 2024-03-29 | 深圳市瀚思通汽车电子有限公司 | LED light source structure, LCoS optical machine and HUD display system thereof |
-
2015
- 2015-03-10 CN CN201510103556.8A patent/CN104765136A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568045A (en) * | 2016-08-19 | 2017-04-19 | 广东雷腾智能光电有限公司 | Method for designing area source rectangular spot lenses and vehicle lamp |
| CN106568045B (en) * | 2016-08-19 | 2019-04-23 | 广东雷腾智能光电有限公司 | A kind of area source rectangular light spot lens design method and a kind of car light |
| CN106444067A (en) * | 2016-08-30 | 2017-02-22 | 京东方科技集团股份有限公司 | Light collimation structure, substrate and manufacturing method, backlight module group and display apparatus |
| WO2018040557A1 (en) * | 2016-08-30 | 2018-03-08 | 京东方科技集团股份有限公司 | Light ray collimating structure, substrate and manufacturing method for same, backlight module and display device |
| CN107726096A (en) * | 2017-09-11 | 2018-02-23 | 华南师范大学 | The visible light projection system of remote LED |
| CN117784512A (en) * | 2024-02-26 | 2024-03-29 | 深圳市瀚思通汽车电子有限公司 | LED light source structure, LCoS optical machine and HUD display system thereof |
| CN117784512B (en) * | 2024-02-26 | 2024-05-24 | 深圳市瀚思通汽车电子有限公司 | LED light source structure, LCoS optical machine and HUD display system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102576797B (en) | The lens that generate for asymmetric | |
| CN104090356B (en) | Optical system of the one kind for the mm LED light source of 1 mm × 1 collimation | |
| CN100561038C (en) | Light fixture | |
| CN201568890U (en) | Lens of LED light source with free curve surface | |
| US8801221B2 (en) | Lens structure, light source device and light source module | |
| CN101430072A (en) | Assembled uniform surface light source | |
| CN104765136A (en) | optical collimated system for circular LED area light source | |
| CN102168838A (en) | One-step packaging LED (Light Emitting Diode) lens with free curve and design method of same | |
| CN104412037A (en) | Optical system with adjustable light beam for led lighting devices | |
| CN111023042B (en) | LED collimation optical lens | |
| CN104317053A (en) | Free-form surface lens construction method based on lighting of LED desk lamp | |
| CN106444067A (en) | Light collimation structure, substrate and manufacturing method, backlight module group and display apparatus | |
| CN201652196U (en) | Combined multiple-mirror light condensing device | |
| CN103912844B (en) | The optical system that LED uniformly collimates | |
| CN204114838U (en) | The secondary optical lens module that a kind of beam angle is adjustable | |
| CN104169776A (en) | Improved optical systems and LED luminaires | |
| Yu et al. | A free-form total internal reflection (TIR) lens for illumination | |
| TWI639798B (en) | LED light source guiding device | |
| CN203363991U (en) | LED (light-emitting diode) secondary optical lens | |
| CN103912845A (en) | Large-field-angle LED (light emitting diode) illuminating lens | |
| CN104180298B (en) | Total-reflection type light projection lens and lamp using light projection lens | |
| CN102901045A (en) | Fresnel lens for high-power light-emitting diode (LED) light source | |
| CN202835182U (en) | Fresnel lens for LED light source with high power | |
| CN104020574B (en) | A kind of optical system for LED light source collimation | |
| CN104676467A (en) | Lens and LED (light emitting diode) lamp with lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150708 |