CN103528020A - Uniform optical reflection method and round LED light source designing method - Google Patents
Uniform optical reflection method and round LED light source designing method Download PDFInfo
- Publication number
- CN103528020A CN103528020A CN201310502027.6A CN201310502027A CN103528020A CN 103528020 A CN103528020 A CN 103528020A CN 201310502027 A CN201310502027 A CN 201310502027A CN 103528020 A CN103528020 A CN 103528020A
- Authority
- CN
- China
- Prior art keywords
- light source
- led light
- curved
- uniform
- reflection
- 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.)
- Withdrawn
Links
Images
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a uniform optical reflection method and a round LED light source designing method. According to the uniform optical reflection method and the round LED light source designing method, a curved reflecting surface and a plane light-out surface are set, an LED light source is arranged between the curved reflecting surface and the plane light-out surface, the positional relation between the curved reflecting surface, the LED light source and the plane light-out surface enables uniform light to be emitted by the plane light-out surface after light emitted by the LED light source is reflected through the curved reflecting surface, the positional relation is set according to a formula, and the LED light source generates a round LED light source through the curved reflecting surface. According to the uniform optical reflection method and the round LED light source designing method, the diffusion film part of the light source is omitted, the light-out rate of the light source is greatly improved, and uniform light emitting is achieved.
Description
Technical field
The invention belongs to lighting field, be specifically related to a kind of uniform optical method for reflection and circular LED light source method for designing.
Background technology
Optics and geometric optics scheduling theory thereof and technology are very ripe, have been widely used in every field, in LED application, are also expanding application category.Semiconductor lighting and LED lamp applications are generally promoted, particularly LED-backlit source, LED flat lamp have a large amount of application, but planar light extracting technology does not also have full maturity, main cause be LED electric light source and flat luminous between greatest differences, generally LED distribution of light is lambert's type, between 90 ° to 120 ° of LED lighting angles, flat lamp mainly contains two kinds of versions: a kind of lateral type, another kind is straight-down negative, and wherein lateral type is luminous more even, but light efficiency is extremely low; Straight-down negative flat lamp light efficiency is high, but thickness is larger, compares its uniformity of high light efficiency poor.Utilizing single LEDs to make the inhomogeneous hot spot of flat lamp produces, need diffusion barrier technology to realize and reach uniformly light-emitting, at present LED flat lamp is also in development with among improving, and effectively solves light source and flat luminous optical design technology, and flat lamp light efficiency and uniformity can be provided.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of diffusion barrier part that can save light source, larger raising light source light emission rate and can realize a kind of uniform optical method for reflection and the circular LED light source method for designing of uniformly light-emitting.
For achieving the above object, technical solution of the present invention is as follows:
A kind of uniform optical method for reflection, set a curved-surface reflection side and plane exiting surface, and between curved-surface reflection side and plane exiting surface, LED light source is set, position relationship by curved-surface reflection side, LED light source and plane exiting surface is arranged so that light that described LED light source sends is after curved-surface reflection side reflection, by planar light extracting face, send uniform light, following formula is followed in described position relationship setting:
R represents that LED light source divergent rays is to the distance of any point on reflecting surface;
x 0 represent the position that target face arranges, target face is exiting surface.
Further, by described position relationship formula, carry out Mathematical Models and solve designing the curved-surface reflection side that can reflect uniform illumination.
Further, described Mathematical Models and solution procedure comprise: first determine a target face
x 0 parameter, sets up the Mathematical Modeling of the reflecting surface of sight line Uniform Illumination in this target face, then by numerical integration method, solves the discrete coordinates of r and θ, obtains reflecting curve of pursuit and curved-surface reflection side.
Further, the parameter that described reflection curve of pursuit relates to comprises the distance d on illumination zone R and spot light and reflecting surface summit, according to setting different target face positions
x 0, the parameter such as the distance d on spot light and reflecting surface summit and illumination zone R, utilize mathematics method calculation by program to obtain corresponding data and corresponding curve thereof, by these data and curve, determine curved-surface reflection side, thereby utilize the LED optical reflector that this curved-surface reflection side is made to reflect uniform light to LED light source.
Described LED optical reflector is the bowl-shape shape structure with flange, and the inner bottom part of its curved-surface reflection side is provided with circular protrusions.
The inner bottom part of LED optical reflector curved-surface reflection side of the present invention is circular protrusions, according to location formula, carrying out modeling and mathematics programmed method calculates and designs, it can play a convex lens reflecting effect on the one hand, the light that LED light source is launched can play good reflecting effect, can produce uniform light source, there is high light utilization efficiency; On the other hand, its overall structure seems attractive in appearance.LED optical reflector reflecting surface of the present invention designs by Modeling Calculation, have reflective evenly, effect that light emission rate is high.
Described LED optical reflector has connected mounting bracket, and described mounting bracket is circular frame, and mounting bracket is provided with radiating piece.
Described LED light source is located on mounting bracket, and LED light source head is towards LED optical reflector.
Described LED optical reflector front is provided with printing opacity safety glass backplate.
A kind of circular LED light source method for designing, it adopts above-mentioned uniform optical method for reflection, design reflective evenly, curved-surface reflection side that light emission rate is high, the light that LED light source sends, is irradiated on curved-surface reflection side, and light is through the reflection of the curved surface surface of emission, formed uniform circular light spot, in circular light spot, light is even, or brightness is even in circular light spot, then warp
Cross the exiting surface of LED optical reflector, finally launch uniform light.
Compared with prior art, the beneficial effect that the present invention has: the light emission rate that can draw the LED optical reflector of employing by software emulation is 90% ~ 97%, and the uniformity is better than 85%, utilizes uniform optical method for reflection can produce reflective uniform sphere shape light.Reflector of the present invention can apply in flat lamp design, and in conjunction with diffuser plate, manufacture light emission rate is high, the panel light of good evenness.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is front view of the present invention;
Fig. 3 is reflection curve of pursuit figure of the present invention;
Fig. 4 is LED optical reflector light emission schematic diagram of the present invention;
Fig. 5 is LED optical reflector reflecting surface of the present invention;
Fig. 6 is the curved-surface reflection side numerical value obtaining by theory analysis and analog computation of the present invention.
In figure: the 1st, printing opacity safety glass backplate, the 2nd, LED optical reflector, the 3rd, mounting bracket, the 4th, LED light source, the curved-surface reflection side of the 5th, LED optical reflector, the 6th, LED light source sends the light with process reflection,
x 0 the position that target face arranges,
yfor light drops on the position in target face after pip, θ is that LED light source is transmitted into the light of reflector any point P and the angle of its place light-emitting area normal.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment
As shown in Figure 1, Figure 2, Fig. 4 and Fig. 5, described LED optical reflector 2 is the bowl-shape shape structure with flange, and its curved-surface reflection side inner bottom part is provided with circular protrusions, described LED light source 4 is centered close on same axis with LED optical reflector 2.
Described LED optical reflector 2 has connected the mounting bracket 3 of circular edges shaped as frame shape, described LED light source 4 is located on mounting bracket 3, mounting bracket 3 is provided with radiating piece, and LED light source 4 heads are towards LED optical reflector 2, and LED optical reflector 2 fronts are provided with printing opacity safety glass backplate 1.
LED light source of the present invention adopts power-type, operating voltage 3V, and drive current 350mA, luminous flux 100 lumens, the light source angle of divergence is 120 °.The curved-surface reflection side of LED optical reflector can adopt aluminium material, and LED light source mounting bracket adopts aluminium material.
The design principle that Fig. 3 is is also LED optical reflector to curved-surface reflection side design principle of the present invention.
It is the LED light source of lambert's type that light source adopts isolychn, and 120 ° of lighting angles, are fixed on d point by LED, and light is invested reflector.
The LED optical reflector going out by above-mentioned principle design is then as follows to its related parameter choosing:
Adopt power type LED light source, operating voltage 2.8V ~ 3.5V, drive current 350mA, the angle of divergence
θ max=120 °, the distance of setting LED light source DaoLED optical reflector bottom centre is that d is 15mm, and illumination zone radius is that R is 40mm, luminescence chip size 1mm * 1mm wherein, and luminous flux is 100 (lm), is positioned over initial point.The reflectivity of reflector is made as 1, reflector bore 56mm.
By relevant ray-tracing software, optical reflector system is carried out to emulation, obtain Illumination Distribution figure and carried out Rotational Symmetry data processing, Illumination Distribution figure after processing, from analog result, can find out that being irradiated to radius is that the effective luminous flux of 80mm is 90 ~ 99(lm), the capacity usage ratio of system reaches 90% ~ 99%, the ratio of employing minimal illumination and maximal illumination characterizes the uniformity of illuminance of whole screen, and uniformity of illuminance is better than 85%.
The camber reflection that can find out the LED optical reflector that uniform optical method for reflection of the present invention is designed from system emulation result has good reflecting effect in the face of the light of LED light source transmitting, the illumination uniformity with superelevation, has improved light utilization efficiency largely.
As Fig. 6, thereby finally obtain curved-surface reflection side correlation values according to programming and software calculating, design its structure, namely the above-mentioned LED optical reflector of mentioning.
A kind of circular LED light source method for designing, the LED optical reflector that adopts uniform optical method for reflection to design, the light that wherein LED light source 4 sends, be irradiated on the curved-surface reflection side 5 of LED optical reflector, light, through the reflection of the curved-surface reflection side 5 of LED optical reflector, has formed uniform circular light spot, in circular light spot, light is even, or brightness is even in circular light spot, then pass through the exiting surface of LED optical reflector 2, finally launch uniform light.
Claims (9)
1. a uniform optical method for reflection, it is characterized in that, set a curved-surface reflection side and plane exiting surface, and between curved-surface reflection side and plane exiting surface, LED light source is set, position relationship by curved-surface reflection side, LED light source and plane exiting surface is arranged so that light that described LED light source sends is after curved-surface reflection side reflection, by planar light extracting face, send uniform light, following formula is followed in described position relationship setting:
R represents that LED light source divergent rays is to the distance of any point on reflecting surface;
2. a kind of uniform optical method for reflection according to claim 1, is characterized in that, by described position relationship formula, carries out Mathematical Models and solve designing the curved-surface reflection side that can reflect uniform illumination.
3. a kind of uniform optical method for reflection according to claim 2, is characterized in that, described Mathematical Models and solution procedure comprise: first determine a target face
x 0 parameter, sets up the Mathematical Modeling of the reflecting surface of sight line Uniform Illumination in this target face, then by numerical integration method, solves the discrete coordinates of r and θ, obtains reflecting curve of pursuit and curved-surface reflection side.
4. a kind of uniform optical method for reflection according to claim 3, is characterized in that, the parameter that described reflection curve of pursuit relates to comprises the distance d of illumination zone R and LED light source and camber reflection vertex of surface, according to setting different target face positions
x 0, the parameter such as the distance d on LED light source and reflecting surface summit and illumination zone R, utilize mathematics method calculation by program to obtain corresponding data and corresponding curve thereof, by these data and curve, determine curved-surface reflection side, thereby utilize the LED optical reflector that this curved-surface reflection side is made to reflect uniform light to LED light source.
5. a kind of uniform optical method for reflection according to claim 4, is characterized in that, described LED optical reflector is the bowl-shape shape structure with flange, and the inner bottom part of its curved-surface reflection side is provided with circular protrusions.
6. a kind of uniform optical method for reflection according to claim 5, is characterized in that, described LED optical reflector has connected mounting bracket, and described mounting bracket is circular frame, and mounting bracket is provided with radiating piece.
7. a kind of uniform optical method for reflection according to claim 6, is characterized in that, described LED light source is located on mounting bracket, and LED light source head is towards LED optical reflector.
8. a kind of uniform optical method for reflection according to claim 7, is characterized in that, described LED optical reflector front is provided with printing opacity safety glass backplate.
9. a circular LED light source method for designing, the uniform optical method for reflection that it adopts described in claim 1 to 7 any one, design reflective evenly, curved-surface reflection side that light emission rate is high, it is characterized in that, the light that LED light source sends, be irradiated on curved-surface reflection side, light, through the reflection of the curved surface surface of emission, has formed uniform circular light spot, in circular light spot, light is even, or brightness is even in circular light spot, then pass through the planar light extracting face of LED optical reflector, finally launch uniform light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502027.6A CN103528020A (en) | 2013-10-23 | 2013-10-23 | Uniform optical reflection method and round LED light source designing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502027.6A CN103528020A (en) | 2013-10-23 | 2013-10-23 | Uniform optical reflection method and round LED light source designing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103528020A true CN103528020A (en) | 2014-01-22 |
Family
ID=49930246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310502027.6A Withdrawn CN103528020A (en) | 2013-10-23 | 2013-10-23 | Uniform optical reflection method and round LED light source designing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103528020A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895330A (en) * | 2018-03-30 | 2018-11-27 | 联想(北京)有限公司 | Electronic equipment |
| CN110390164A (en) * | 2019-07-24 | 2019-10-29 | 严西 | Adjust uniformity of illuminance reflecting element curved surface generation method, reflecting element and lamps and lanterns |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040001344A1 (en) * | 2002-07-01 | 2004-01-01 | Accu-Sort Systems, Inc. | Integrating led illumination system for machine vision systems |
| CN101586779A (en) * | 2009-06-18 | 2009-11-25 | 中国计量学院 | Design method of LED homogeneous reflector based on optical extension and use thereof |
| CN201561286U (en) * | 2009-07-31 | 2010-08-25 | 济源市科灵电器有限责任公司 | Flame-proof type LED projector |
-
2013
- 2013-10-23 CN CN201310502027.6A patent/CN103528020A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040001344A1 (en) * | 2002-07-01 | 2004-01-01 | Accu-Sort Systems, Inc. | Integrating led illumination system for machine vision systems |
| CN101586779A (en) * | 2009-06-18 | 2009-11-25 | 中国计量学院 | Design method of LED homogeneous reflector based on optical extension and use thereof |
| CN201561286U (en) * | 2009-07-31 | 2010-08-25 | 济源市科灵电器有限责任公司 | Flame-proof type LED projector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895330A (en) * | 2018-03-30 | 2018-11-27 | 联想(北京)有限公司 | Electronic equipment |
| CN110390164A (en) * | 2019-07-24 | 2019-10-29 | 严西 | Adjust uniformity of illuminance reflecting element curved surface generation method, reflecting element and lamps and lanterns |
| CN110390164B (en) * | 2019-07-24 | 2023-07-21 | 正昇实业(深圳)有限公司 | Reflection piece curved surface generation method for adjusting illuminance uniformity, reflection piece and lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102168838B (en) | One-step packaging LED (Light Emitting Diode) lens with free curve and design method of same | |
| CN103335276B (en) | A kind of LED street lamp lens and LED street lamp system | |
| CN101144863A (en) | Secondary optical lens | |
| CN111503558B (en) | Close-range installation high-uniformity LED blackboard lamp lens | |
| CN107740995A (en) | A kind of LED total reflection lens, LED light conductors and automobile lamp | |
| CN205535304U (en) | Light path structure of LED pattern lamp | |
| CN204100134U (en) | A kind of LED lens and lens module | |
| CN201531823U (en) | Light diffuser used for high-power LED light source | |
| CN205669770U (en) | A kind of compound Fresnel Lenses being applicable to navigation light Optical devices | |
| CN103528020A (en) | Uniform optical reflection method and round LED light source designing method | |
| CN105180095A (en) | Uniform light intensity LED reflection light emitting method based on non-imagining optics | |
| CN203323002U (en) | LED street lamp lens and LED street lamp system | |
| CN105156990B (en) | LED street lamp lens unit, LED street lamp lens module and street lamp with LED street lamp lens module | |
| CN102705783A (en) | System for improving LED (Light Emitting Diode) light source illuminance uniformity | |
| CN206222005U (en) | A kind of luminous intensity distribution module and light fixture | |
| CN204611539U (en) | A kind of side is luminous without light guide plate LED panel lamp | |
| CN203500892U (en) | Decorative lamp and optical module for decorative lamp | |
| TWM473473U (en) | LED streetlamp lens module | |
| CN208606108U (en) | A kind of matrix LED distance light optical system | |
| CN104344343A (en) | Optical lens and light source module with optical lens | |
| CN102927502A (en) | High-power light-emitting diode (LED) cyclorama lamp based on compensation method | |
| CN207421919U (en) | A kind of reflector, court headlamp and court lighting device | |
| CN207455312U (en) | A kind of new structure LED panel lamp | |
| CN202647592U (en) | Lens capable of achieving even rectangular facula | |
| CN102759066B (en) | LED (light-emitting diode) flooding total-reflection lens and LED lamp using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20140122 |