CN202676282U - LED light distribution characteristic test apparatus - Google Patents
LED light distribution characteristic test apparatus Download PDFInfo
- Publication number
- CN202676282U CN202676282U CN 201220270463 CN201220270463U CN202676282U CN 202676282 U CN202676282 U CN 202676282U CN 201220270463 CN201220270463 CN 201220270463 CN 201220270463 U CN201220270463 U CN 201220270463U CN 202676282 U CN202676282 U CN 202676282U
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- led
- light distribution
- led light
- optical scanner
- transmission screen
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model relates to an LED light distribution characteristic test apparatus. The technology problem is to provide the LED light distribution characteristic test apparatus, wherein the structure is simple, cost is low, LED light distribution characteristics can be rapidly measured, and LED particles and LED array illumination defects can be analyzed. The technology scheme is provided as following: the LED light distribution characteristic test apparatus comprises a computer; the LED light distribution characteristic test apparatus is characterized by also comprising an adjustable support, an LED fixedly arranged on the adjustable support, a driving power supply connected with the LED through a lead, a diffuse translucent screen faced at the light-emitting surface of the LED and an optical scanner positioned at the back side of the diffuse translucent screen; and the optical scanner is connected with the computer through a data line. The adjustable support comprises a pedestal, a vertical rod arranged on the pedestal, a horizontal rod fixedly arranged on the vertical rod through an adjustable cross clamp and a light source clamp fixedly arranged at the front end of the horizontal rod for fixing the LED.
Description
Technical field
The utility model relates to a kind of electric light source proving installation, the especially proving installation of LED light distribution property.
Background technology
LED is the abbreviation of light emitting diode, is a kind of electroluminescent device, and namely the P-N light of binding up one's hair belongs to solid state light emitter.LED be called as the 4th generation lighting source or green light source, because of advantages such as its energy-conserving and environment-protective, little life-span of volume are long, be widely used in the special lighting fields such as demonstration, decoration, urban landscape, road.
LED is luminous to have directivity and characteristics pockety, and its light distribution property is the important indicator of analyzing and estimate the LED performance.The laboratory is by measuring the LED surface of intensity distribution, and the optical uniformity parameter that obtains LED through converting is analyzed the luminous and illuminating effect of LED.All be necessary LED is carried out the light distribution property test when screening LED of manufacturing enterprise and inspection body's check, and then judge the LED quality good or not.
The measuring equipment of LED light distribution property mainly is distribution photometer at present.Yet often size is huge, project organization is complicated for distribution photometer, complex operation step, with high costs, and the speed of test light distribution character is slow; In addition, distribution photometer once can only be tested a led light source, ageing and the cost performance that undersized LED in enormous quantities is detected is all very low, and existing distribution photometer technology is not supported the light distribution property of plurality of LEDs or led array is carried out synchronism detection yet.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency that overcomes the above-mentioned background technology, provide a kind of simple in structure, cost is lower, can Quick Measurement LED light distribution property, analyze the LED light distribution property proving installation of LED particle and the luminous defective of led array.
The technical scheme that the utility model adopts is: a kind of LED light distribution property proving installation comprises computing machine; It is characterized in that this device also comprise an adjustable support, be fixed on LED on the adjustable support, by wire connect the driving power, forward of LED facing to the diffusion light transmission screen of LED light-emitting area, be positioned at the optical scanner at the diffusion light transmission screen back side, described optical scanner is communicated with by data line with computing machine.
Described adjustable support comprises base, be installed in vertical rod on the base, be fixed on the horizon bar on the vertical rod and be fixed on the light source folder that the horizon bar front end is used for fixed L ED by adjustable cross clamp.
The light-emitting area of described LED vertically down, described diffusion light transmission screen horizontal location is the following of LED and cover on the scan table of optical scanner.
Described diffusion light transmission screen is frosted PC lamina membranacea or frosted glass.
The scan table of described diffusion light transmission screen size and described optical scanner is measure-alike.
Principle of work of the present utility model is: behind the plugged, the light irradiation at short distance that LED sends forms the light and shade hot spot corresponding with the distribution of LED light at described diffusion light transmission screen towards the one side (being the back side of diffusion light transmission screen) of scan table behind described diffusion light transmission screen; After computing machine is controlled described optical scanner scanning light spot and obtained image by scanning software, process just to obtain the LED surface of intensity distribution through image processing software, namely can be used for intuitive judgment LED light distribution property.
The beneficial effects of the utility model are: since with optical scanner as the LED sensitive detection parts, and with the Computer Processing image, can obtain rapidly the LED surface of intensity distribution, and then can intuitive judgment LED light distribution property.This device is supported simultaneously synchro measure light distribution property of plurality of LEDs, can carry out the analysis of diagnosis formula to the luminous defective of single LEDs, LED arranging situation and light distributing homogeneity in the led array, is specially adapted to the in batches light distribution property fast detecting of led light source.In addition, package unit is simple in structure, simple operation, and cost is extremely low.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is for measuring the single led surface of intensity distribution that obtains.
The surface of intensity distribution that Fig. 3 obtains for measuring led array.
Embodiment
The utility model is described in further detail below in conjunction with embodiment shown in the drawings.
In the LED light distribution property proving installation as shown in Figure 1: on the base 1 of adjustable support vertical rod 11 is installed, horizon bar 13 is installed on the vertical rod by cross clamp 12; By rotating knob adjustable horizontal bar 13 height on the cross clamp; Horizon bar 13 front ends (right-hand member among the figure) are installed light source folder 14, LED3 and are fixedly clamped in the top of diffusion light transmission screen 4 by light source; The light-emitting area of LED shows that the light-emitting area direction of LED is straight down in diffusion light transmission screen 4(figure, represented by arrow A); Regulating cross clamp can make LED3 and diffusion light transmission screen 4 keep the required distance of test.Driving power 2 is by wire 21 connections and light LED, the divergent rays that LED sends, irradiation at short distance is to the diffusion light transmission screen 4 of below, simultaneously form the light and shade hot spot corresponding with LED light emission direction, luminous intensity at the diffusion light transmission screen towards the scan table of optical scanner 5, hot spot comprises the light distribution information of LED.Diffusion light transmission screen horizontal positioned is also coating the scan table zone of optical scanner, the hot spot of the LED3 on optical scanner scanning and the record diffusion light transmission screen 4.The data line 51 of optical scanner by being connected with computing machine 6 is transferred to computing machine with the hot spot signal; Because there are corresponding relation in hot spot and LED lighting angle, luminous intensity; Computing machine calculates by image analysis software and relative program, and the hot spot figure that can will comprise the LED light distribution information is converted to the surface of intensity distribution (as shown in Figure 2) on a certain light-emitting area.
The led array that the test plurality of LEDs forms, the light source folder is upper need connect led array; By the surface of intensity distribution (as shown in Figure 3) that obtains after optical scanner scanning, the Computer Processing.
Described diffusion light transmission screen should be chosen the light that LED is sent and have certain diffuse effect and the material of reflected effect (transmittance to LED light is 1.5%-80%); Concrete material can be: frosted PC(polycarbonate plastic) lamina membranacea (thickness: 0.2mm-2mm), or frosted glass (thickness: 2mm-4mm) etc.
The scan table size of described diffusion light transmission screen size and described optical scanner is identical (unanimously) preferably.
As recommendation, described optical scanner has the above pixel resolution of 300dpi, the scan size of 216mm * 297mm.
Described driving power comprises for the direct supply of driving LED and AC power; The adjustable driving power of out-put supply size is selected in recommendation.
Above-described various electrical equipment and component of machine all outsourcing obtain.
Note also that at last, what more than enumerate only is specific embodiment of the utility model.Obviously, the utility model is not limited to above-described embodiment, and many Function Extensions can also be arranged, and the variation of light-source structure and quantity, the expansions such as replacing of other similar light source all should be thought protection domain of the present utility model.
Claims (5)
1. a LED light distribution property proving installation comprises computing machine (6); It is characterized in that this device also comprises an adjustable support, is fixed on the LED(3 on the adjustable support), by wire (21) connect the driving power (2), forward of LED facing to the diffusion light transmission screen (4) of LED light-emitting area, be positioned at the optical scanner (5) at the diffusion light transmission screen back side, described optical scanner is connected by data line (51) with computing machine.
2. a kind of LED light distribution property proving installation according to claim 1 is characterized in that: described adjustable support comprises base (1), be installed in vertical rod (11) on the base, be fixed on the horizon bar (13) on the vertical rod and be fixed on the light source folder (14) that the horizon bar front end is used for fixed L ED by adjustable cross clamp (12).
3. a kind of LED light distribution property proving installation according to claim 1 and 2 is characterized in that: the light-emitting area of described LED vertically down, described diffusion light transmission screen horizontal location is the following of LED and cover on the scan table of optical scanner.
4. a kind of LED light distribution property proving installation according to claim 3, it is characterized in that: described diffusion light transmission screen is frosted PC lamina membranacea or frosted glass.
5. a kind of LED light distribution property proving installation according to claim 4, it is characterized in that: the scan table of described diffusion light transmission screen size and described optical scanner is measure-alike.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270463 CN202676282U (en) | 2012-06-06 | 2012-06-06 | LED light distribution characteristic test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270463 CN202676282U (en) | 2012-06-06 | 2012-06-06 | LED light distribution characteristic test apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202676282U true CN202676282U (en) | 2013-01-16 |
Family
ID=47497181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220270463 Expired - Fee Related CN202676282U (en) | 2012-06-06 | 2012-06-06 | LED light distribution characteristic test apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202676282U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630332A (en) * | 2013-11-15 | 2014-03-12 | 南京中电熊猫照明有限公司 | Backlight brightness uniformity measuring device and method |
-
2012
- 2012-06-06 CN CN 201220270463 patent/CN202676282U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630332A (en) * | 2013-11-15 | 2014-03-12 | 南京中电熊猫照明有限公司 | Backlight brightness uniformity measuring device and method |
| CN103630332B (en) * | 2013-11-15 | 2017-01-11 | 南京中电熊猫照明有限公司 | Backlight brightness uniformity measuring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20130606 |