CN105571832A - LED reception tube test method - Google Patents
LED reception tube test method Download PDFInfo
- Publication number
- CN105571832A CN105571832A CN201510969152.7A CN201510969152A CN105571832A CN 105571832 A CN105571832 A CN 105571832A CN 201510969152 A CN201510969152 A CN 201510969152A CN 105571832 A CN105571832 A CN 105571832A
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- Prior art keywords
- led
- receiving tube
- measured
- tube
- receiving
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/2632—Circuits therefor for testing diodes
- G01R31/2635—Testing light-emitting diodes, laser diodes or photodiodes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to an LED reception tube test method, comprising steps of using a plurality of standard LED reception tubes to constitute an LED reception tube plane to receive the light emitted by the LED emission tubes to be detected which are arranged beyond the LED reception tube plane, wherein, amid the light which is emitted by the LED emission tube and is received by the LED reception tube plane, the intensity of the normal light is the strongest, obtaining a normal incidence value, obtaining the strongest light intensity of the current LED transmission tube to be detected according to the normal incidence value, determining the boundary scope of the numerous oblique light intensities which is greater than or equal to the effective light intensity, and obtaining a light emission angle of an LED emission tube to be detected according to the inclination angle of the LED reception tube plane, the straight line distance between the LED emission tube and the light direct radiation point, and the light irradiation angle obtained through calculation. The LED emission tube test method is low in cost, simple in test process and accurate in test.
Description
Technical field
The present invention relates to LED technology field, be specifically related to a kind of method of testing of LED receiving tube.
Background technology
Infrared tube touch-screen is difference installation infrared power valve and infrared receiving tube on two groups of opposite side of screen frame, is acquired the touch-screen of touch point coordinate position by the break-make of the infrared tube light path on two groups of opposite side.LED infrared lamp is divided into transmitting and receiving two kinds, respectively with light color and dark differentiation, can also be divided into 850nm and 940nm two kinds in addition, be distinguished by wavelength.This technology by obtaining the signal value size of LED lamp tube, can calculate light intensity and the lighting angle of LED lamp tube, thus distinguishes the designing requirement whether meeting 850nm and 940nm.The voltage and current of LED lamp tube can be calculated by acquisition cuicuit.
The major parameter of LED lamp tube test comprises light intensity and angle etc., existing LED lamp tube method of testing, is tested by spectroscope or LED lamp tube testing tool, can test light intensity and the lighting angle of LED lamp tube, mode is manually tested, and often testing a lamp probably needs 5 minutes.But spectroscope or LED lamp tube testing tool expensive, test implementation cost is large, and testing efficiency is low.
Summary of the invention
The object of the present invention is to provide the method for testing of the LED receiving tube that a kind of implementation cost is cheap, test effect is higher.
For achieving the above object, present invention employs following technical scheme:
A method of testing for LED receiving tube, is characterized in that, comprises the following steps:
(1) by LED power valve planar horizontal or vertically place, LED receiving tube to be measured is received perpendicular to LED power valve plane;
(2) obtain the signal of LED receiving tube to be measured non-perpendicular reception LED power valve plane, be recited as and tiltedly sweep value, according to described tiltedly sweep the described LED receiving tube to be measured of value acquisition tiltedly sweep receiving light power;
(3) search described tiltedly sweeping in receiving light power and be more than or equal to default part of effectively tiltedly sweeping receiving light power, determine the bounds of LED receiving tube to be measured at the effective receiving light power of LED power valve plane, calculate the distance of described bounds to described vertical point;
(4) according to LED power valve flat inclination, described LED receiving tube to be measured to the air line distance of described vertical point and described bounds to the distance of described vertical point, calculate the reception angular of LED receiving tube to be measured.
(5) obtain the maximum receiving light power of preset standard LED receiving tube under preset test environment and receive angular, the maximum receiving light power of described LED receiving tube to be measured is compared with receiving angular and the maximum receiving light power of preset standard LED receiving tube under preset test environment and receiving angular, determines the quality of described LED receiving tube to be measured.
Further, in described step (5), obtain the maximum receiving light power of preset standard LED receiving tube under preset test environment and specifically comprise step with reception angular: keep preset test environment, described preset standard LED receiving tube is replaced LED receiving tube to be measured; Adopting the method identical with receiving angular with the maximum receiving light power of test LED receiving tube to be measured, testing the maximum receiving light power of described preset standard LED receiving tube under preset test environment and receiving angular.
As shown from the above technical solution, the method for testing of LED receiving tube of the present invention is simple, convenient, and without the need to being tested by spectroscope or LED lamp tube testing tool, its testing cost is lower, and testing efficiency is higher.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the method for testing of LED receiving tube of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
As shown in Figure 1, LED power valve method of testing of the present invention, multiple standard LED receiving tube is utilized to form LED receiving tube plane, receive the light being arranged at the out-of-plane LED power valve to be measured of LED receiving tube and launching, receive in the light of LED power valve to be measured injection in LED receiving tube plane, the light intensity of just penetrating is maximum, obtain this value for just to penetrate value, according to the largest light intensity of just penetrating value and can obtain current LED power valve to be measured, LED to be measured slants the light being only more than or equal to default effect of light strength in the light of LED receiving tube plane and could utilize in actual applications, determine the bounds being more than or equal to default effect of light strength in numerous skew ray, afterwards according to the angle of inclination of LED receiving tube plane, LED power valve to be measured is to the air line distance of described point of vertical, and described bounds is to the distance of described point of vertical, the lighting angle of LED power valve to be measured can be calculated.Its step concrete is as follows:
S1: by LED power valve planar horizontal or vertically place, receives LED receiving tube to be measured perpendicular to LED power valve plane; LED receiving tube planar horizontal or vertically place, its angle of inclination is zero degree or 90 degree, LED power valve to be measured, perpendicular to the direct projection of described LED receiving tube plane, obviously can be reduced in the computing to data in subsequent step, tests out the lighting angle of LED power valve to be measured more simply, sooner.
S2: the signal obtaining LED receiving tube to be measured non-perpendicular reception LED power valve plane, is recited as and tiltedly sweeps value, according to described tiltedly sweep the described LED receiving tube to be measured of value acquisition tiltedly sweep receiving light power;
S3: search described tiltedly sweeping in receiving light power and be more than or equal to default part of effectively tiltedly sweeping receiving light power, determine the bounds of LED receiving tube to be measured at the effective receiving light power of LED power valve plane, calculate the distance of described bounds to described vertical point;
Normal, the LED receiving tube to be measured optical range received in LED power valve plane should be infinitely-great, namely, infinitely-great aperture can be formed in LED receiving tube plane, but LED to be measured slants the light being only more than or equal to default effect of light strength in the light of LED receiving tube plane and could utilize in actual applications, so need here to determine LED receiving tube to be measured effective f-number scope in LED power valve plane, this is preset effectively tiltedly to clear off and can carry out adjusting and setting according to actual conditions by force, effectively tiltedly clearing off of such as setting is by force 75, that in LED power valve plane, so detects that each LED receiving tube receives tiltedly clears off intensity, search the effective f-number being greater than or equal to 75, determine the bounds of effective f-number, tiltedly clearing off on this bounds is equal to 75 by force, bounds tiltedly clears off near the aperture part of photocentre and is all greater than 75 by force, bounds tiltedly clears off away from the aperture part be concerned about and is all less than 75 by force, can not utilize in current practical application.
S4: according to LED receiving tube flat inclination, described LED receiving tube to be measured to the air line distance of described vertical point and described bounds to the distance of described vertical point, calculate the reception angular of LED receiving tube to be measured.
S5: obtain the maximum receiving light power of preset standard LED receiving tube under preset test environment and receive angular, the maximum receiving light power of described LED receiving tube to be measured is compared with receiving angular and the maximum receiving light power of preset standard LED receiving tube under preset test environment and receiving angular, determines the quality of described LED receiving tube to be measured.In this step, obtain the maximum receiving light power of preset standard LED receiving tube under preset test environment and specifically comprise step with reception angular: keep preset test environment, described preset standard LED receiving tube is replaced LED receiving tube to be measured; Adopting the method identical with receiving angular with the maximum receiving light power of test LED receiving tube to be measured, testing the maximum receiving light power of described preset standard LED receiving tube under preset test environment and receiving angular.
The largest light intensity of preset standard LED receiving tube under preset test environment and lighting angle according to historical standard data or actually can obtain data acquisition, only need preset standard LED receiving tube to replace LED receiving tube to be measured when the actual acquisition of needs, then adopt above-mentioned method of testing to calculate largest light intensity and the lighting angle of preset standard LED receiving tube.Only have when the largest light intensity of LED receiving tube to be measured and lighting angle are all more than or equal to largest light intensity and the lighting angle of standard LED receiving tube, LED receiving tube to be measured is just certified products.If more abundant data accurately can also be provided in addition in historical standard data, the largest light intensity X% being more than or equal to standard LED receiving tube according to such as largest light intensity is first-class quality, be greater than Y% and be second-class quality, in like manner lighting angle also can arrange multiple quality ladder, so here, more accurate LED receiving tube to be measured can be divided into multiple qualities, and be not only judge whether qualified, its method of testing obtain result will be abundanter.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (2)
1. a method of testing for LED receiving tube, is characterized in that, comprises the following steps:
(1) by LED power valve planar horizontal or vertically place, LED receiving tube to be measured is received perpendicular to LED power valve plane;
(2) obtain the signal of LED receiving tube to be measured non-perpendicular reception LED power valve plane, be recited as and tiltedly sweep value, according to described tiltedly sweep the described LED receiving tube to be measured of value acquisition tiltedly sweep receiving light power;
(3) search described tiltedly sweeping in receiving light power and be more than or equal to default part of effectively tiltedly sweeping receiving light power, determine the bounds of LED receiving tube to be measured at the effective receiving light power of LED power valve plane, calculate the distance of described bounds to described vertical point;
(4) according to LED power valve flat inclination, described LED receiving tube to be measured to the air line distance of described vertical point and described bounds to the distance of described vertical point, calculate the reception angular of LED receiving tube to be measured;
(5) obtain the maximum receiving light power of preset standard LED receiving tube under preset test environment and receive angular, the maximum receiving light power of described LED receiving tube to be measured is compared with receiving angular and the maximum receiving light power of preset standard LED receiving tube under preset test environment and receiving angular, determines the quality of described LED receiving tube to be measured.
2. the method for testing of LED receiving tube according to claim 2, it is characterized in that: in described step (5), obtain the maximum receiving light power of preset standard LED receiving tube under preset test environment and specifically comprise step with reception angular: keep preset test environment, described preset standard LED receiving tube is replaced LED receiving tube to be measured; Adopting the method identical with receiving angular with the maximum receiving light power of test LED receiving tube to be measured, testing the maximum receiving light power of described preset standard LED receiving tube under preset test environment and receiving angular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510969152.7A CN105571832A (en) | 2015-12-20 | 2015-12-20 | LED reception tube test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510969152.7A CN105571832A (en) | 2015-12-20 | 2015-12-20 | LED reception tube test method |
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| Publication Number | Publication Date |
|---|---|
| CN105571832A true CN105571832A (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510969152.7A Pending CN105571832A (en) | 2015-12-20 | 2015-12-20 | LED reception tube test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112732012A (en) * | 2019-10-29 | 2021-04-30 | 北京小米移动软件有限公司 | Electronic device |
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| JP2011216794A (en) * | 2010-04-01 | 2011-10-27 | Sharp Corp | Light emission measuring apparatus and light emission measuring method, control program, and readable recording medium |
| WO2012073345A1 (en) * | 2010-11-30 | 2012-06-07 | パイオニア株式会社 | Light-receiving module for light-emitting element and inspection device for light-emitting element |
| CN103630334A (en) * | 2013-11-29 | 2014-03-12 | 广州视睿电子科技有限公司 | LED (light-emitting diode) emitting tube and LED receiving tube testing method |
| CN103630335A (en) * | 2013-11-29 | 2014-03-12 | 广州视睿电子科技有限公司 | LED (light-emitting diode) lighting angle detection device and LED receiving light angle detection device |
| CN104280625A (en) * | 2013-07-10 | 2015-01-14 | 鸿富锦精密工业（深圳）有限公司 | Testing system of infrared emission device and testing method of infrared emission device |
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2015
- 2015-12-20 CN CN201510969152.7A patent/CN105571832A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011216794A (en) * | 2010-04-01 | 2011-10-27 | Sharp Corp | Light emission measuring apparatus and light emission measuring method, control program, and readable recording medium |
| WO2012073345A1 (en) * | 2010-11-30 | 2012-06-07 | パイオニア株式会社 | Light-receiving module for light-emitting element and inspection device for light-emitting element |
| CN104280625A (en) * | 2013-07-10 | 2015-01-14 | 鸿富锦精密工业（深圳）有限公司 | Testing system of infrared emission device and testing method of infrared emission device |
| CN103630334A (en) * | 2013-11-29 | 2014-03-12 | 广州视睿电子科技有限公司 | LED (light-emitting diode) emitting tube and LED receiving tube testing method |
| CN103630335A (en) * | 2013-11-29 | 2014-03-12 | 广州视睿电子科技有限公司 | LED (light-emitting diode) lighting angle detection device and LED receiving light angle detection device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112732012A (en) * | 2019-10-29 | 2021-04-30 | 北京小米移动软件有限公司 | Electronic device |
| CN112732012B (en) * | 2019-10-29 | 2024-06-04 | 北京小米移动软件有限公司 | Electronic equipment |
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Application publication date: 20160511 |