CN107044908A - It is a kind of quickly to match somebody with somebody light detection method - Google Patents

It is a kind of quickly to match somebody with somebody light detection method Download PDF

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Publication number
CN107044908A
CN107044908A CN201611262710.7A CN201611262710A CN107044908A CN 107044908 A CN107044908 A CN 107044908A CN 201611262710 A CN201611262710 A CN 201611262710A CN 107044908 A CN107044908 A CN 107044908A
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China
Prior art keywords
word pattern
light
measurement point
light source
length
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CN201611262710.7A
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Chinese (zh)
Inventor
李雪
郑晅
史芊芊
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Changan University
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Changan University
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Application filed by Changan University filed Critical Changan University
Priority to CN201611262710.7A priority Critical patent/CN107044908A/en
Publication of CN107044908A publication Critical patent/CN107044908A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00Testing of optical apparatus; Testing structures by optical methods not otherwise provided for

Abstract

Quickly match somebody with somebody light detection method the invention discloses a kind of, this method builds an experiment darkroom first, and there is shading curtain at experiment darkroom four sides, and the shading rate of the shading curtain reaches more than 80% so that the ambient light illumination in experiment darkroom is 0.1lx;Dark indoor distances ground 1.2m height is being tested, suspension is fixed with the light source of Arbitrary Rotation;A meter word pattern is drawn on the ground, and this meter of word pattern is located at below light source, and multiple measurement points are provided with rice word pattern, the brightness value of each measurement point of rice word pattern is measured with illumination photometer, and brightness value is converted into light intensity value, that is, obtains easy distribution curve flux.This method is simple to operation, can quickly and easily substantially obtain the distribution curve flux of light fixture.

Description

It is a kind of quickly to match somebody with somebody light detection method
Technical field
The invention belongs to the detection method with optical arena, and in particular to light detection method is matched somebody with somebody in a kind of quick progress.
Background technology
With the fast development of semiconductor lighting industry, LED is because its luminous efficiency is high, light output orthotype is good, colour developing Function admirable, the features such as colour temperature can be selected, currently more widely applied.LED as semiconductor light emitting light source, its Principle of luminosity and optical characteristics have very big difference with other light fixtures, such as light source high-pressure mercury lamp, incandescent lamp, therefore, answer shape Into properly for LED with light detection method.It is reflection light fixture light intensity and distribution curve flux is the important indicator for studying LED luminous intensity distributions The important parameter of distribution situation, is also the important evidence for instructing Lighting Design and light fixture to select.
The tradition strong spatial distribution measuring method of LED light mainly has three kinds at present, rotary reflective mirror, motion reflector type and Rotating lamp formula.The most common measuring method of rotary reflective mirror is that optional LED/light source is not using a photometric detector Dynamic, photometric detector surrounds its rotation sweep, and also rotatable photometric detector is motionless, and LED/light source is around a fixed center point Rotation, because LED/light source is in movement in test process, LED/light source is different in the environment residing for diverse location, it is easy to by environment temperature Degree and movement air flow influence.Move reflector type measuring method and make large-scale motion, but LED light in space without LED/light source The light beam that source is reflexed on detector direction in measurement process can change at any time, but there is measuring beam around circular cone change, survey Examination distance is fixed non-adjustable and needs to take the shortcoming of larger space for large LED light source.Central rotation reflector type is surveyed Amount needs LED/light source to make class circular motion in a sizable spatial dimension, while speculum and asessory shaft must be with masters Axle is rotated with identical angular speed reverse sync, and this metering system is synchronous to each axle of stability of photoluminescence and system of LED/light source Rotating requires are high.
Although traditional can obtain very accurate light source light distribution curve with light detection method, the luminous intensity distribution inspection of light fixture is carried out Long the time required to surveying, detection means needs to take larger space, and complex operation is difficult to carry out.
The content of the invention
Match somebody with somebody the technical problem that light detection method is present for above-mentioned prior art, it is an object of the present invention to provide a kind of Quickly match somebody with somebody light detection method, so that the luminous intensity distribution for quickly and easily entering line light source is detected.
In order to realize above-mentioned task, the present invention takes following technical solution:
It is a kind of quickly to match somebody with somebody light detection method, it is characterised in that to be carried out according to the following steps:
An experiment darkroom is built first, and there is shading curtain at experiment darkroom four sides, and the shading rate of the shading curtain reaches To more than 80% so that the ambient light illumination in experiment darkroom is 0.1lx;
The light source for being fixed with Arbitrary Rotation is highly hung in the dark indoor distances ground 1.2m of experiment;
A meter word pattern is drawn on the ground, and this meter of word pattern is located at below light source, be provided with rice word pattern many Individual measurement point, the brightness value of each measurement point of rice word pattern is measured with illumination photometer, and brightness value is converted into light intensity value, that is, is obtained Easy distribution curve flux.
According to the present invention, the length in the experiment darkroom is 4m, and width is 2m, is highly 1.8m.
Further, the measurement point set on the rice word pattern has 9, wherein, the 1st measurement point corresponds to rice font The length of patterned sides is 0.69m, and the length that the 2nd measurement point corresponds to rice word pattern side is 1.2m, and the 3rd measurement point corresponds to rice The length on word pattern side is 2m, and the length that the 4th measurement point corresponds to rice word pattern side is 0.44m, and the 5th measurement point corresponds to The length on rice word pattern side is 0.69m, and the length that the 6th measurement point corresponds to rice word pattern side is 1.2m, the 7th measurement point pair Should be 2m in the length on rice word pattern side, the length that the 8th measurement point corresponds to rice word pattern side is 0.44m, the 9th measurement point On the vertical center line of light source.
The reduction formula of the brightness value and light intensity value is:
I=E × r2=E × 1.82=3.24 × E
In formula, I is light intensity, and E is illumination, r by survey plane and light source distance.
Described Arbitrary Rotation light source is made up of light fixture and shaft device.
The rotation mode of shaft device rotation be using rotate counterclockwise for just, horizontal line is 0 °, respectively 0 ° of rotation, 90 °, 45 ° and -45 °.
The rice word pattern recruitment word pattern or matrix pattern pattern are substituted.
The simple distribution curve flux is the brightness value obtained by light source in the actual measurement of different angle differences, and then obtains light intensity Value, that is, obtain easy distribution curve flux.
The easy distribution curve flux is by polar coordinate representation, and polar origin is the light-emitting area center of light source, each luminous Face center represents a light intensity value, and more outer circle light intensity is bigger, wherein, angle value is the angle on section, is in downward direction 0 °, Institute's measuring point corresponds to 9 angles in distribution curve flux figure respectively.
The present invention's quickly matches somebody with somebody light detection method compared with prior art, can quickly and easily carry out light source light distribution inspection Survey, obtain distribution curve flux, the method is simple and easy to apply, be easy to operation.
Brief description of the drawings
Fig. 1 quickly matches somebody with somebody light detection method flow chart for the present invention's.
Each code is represented in figure:1st, experiment darkroom, 2, shaft device, 3, light fixture, 4, ground level, 5, rice word pattern, 6.1~6.9, measurement point.
Fig. 2 is luminous intensity distribution detects schematic diagram.
Below in conjunction with accompanying drawing, the present invention is further illustrated with embodiment.
Specific embodiment
Referring to Fig. 1, the present embodiment provides a kind of quickly with light detection method, and experiment darkroom 1 is built first, darkroom 1 is tested Four sides have shading curtain, it is desirable to the shading rate of shading curtain reaches more than 80% so that experiment darkroom 1 ambient light illumination be 0.1lx;Then light fixture 3 and shaft device 2 are constituted into one to be suspended in experiment darkroom with the light source of Arbitrary Rotation Highly locate apart from ground 1.2m;Meter word pattern 5 is drawn on ground level 4, this meter of word pattern 5 is located at below light source, in rice Multiple measurement points are provided with word pattern 5, the brightness value of each measurement point of rice word pattern 5 is measured with illumination photometer, and by illumination Value is converted into light intensity value, that is, obtains easy distribution curve flux.
Wherein, it is to reduce measurement error to build experiment darkroom 1 so that reality of the obtained brightness value closer to light source Illumination.
In the present embodiment, the length in experiment darkroom 1 is 4m, and width is 2m, is highly 1.8m.Test all in darkroom 1 Light is all from light fixture 3, not by ambient interference and influence, reduce human error.Light fixture 3 can be incandescent lamp, also may be used Be LED either other types of light fixture.
Wherein, rice word pattern 5 can be fixed with black belt on ground, and the measurement point set on rice word pattern 5 has 9 Individual (6.1~6.9), wherein, the length that the 1st measurement point (6.1) corresponds to rice word pattern side is 0.69m, the 2nd measurement point (6.2) length corresponding to rice word pattern side is 1.2m, and the length that the 3rd measurement point (6.3) corresponds to rice word pattern side is 2m, the length that the 4th measurement point (6.4) corresponds to rice word pattern side is 0.44m, and the 5th measurement point (6.5) corresponds to rice font figure The length on case side is 0.69m, and the length that the 6th measurement point (6.6) corresponds to rice word pattern side is 1.2m, the 7th measurement point (6.7) Length corresponding to rice word pattern side is 2m, and the length that the 8th measurement point (6.8) corresponds to rice word pattern side is 0.44m, the 9 measurement points (6.9) are on the vertical center line of light source.
During the illumination for each measurement point (6.1~6.9) for measuring rice word pattern 5, it can measure several times more, average, carry The accuracy of high illumination value.
Shown in Figure 2, Fig. 2 gives luminous intensity distribution detects schematic diagram, and specific detecting step is:
1st, the experiment surrounding of darkroom 1 reaches that more than 80% shading curtain is built using shading rate, it is ensured that dark room conditions illumination Not higher than 0.1lx so that luminous intensity distribution detection is carried out under conditions of low-light (level) environment.
2nd, equipment needed for detection is prepared:Illumination photometer, light fixture 3, shaft device 2 and black belt.
3rd, light fixture 3 is fixed on shaft device 2 and constitutes light source, the pattern 5 of rice font uses black belt in ground level On.
4th, light fixture 3 is opened, the brightness value of nine measurement points (6.1~6.9) on rice word pattern 5 is measured with illumination photometer, And record, each measurement point is measured 3 times respectively, takes its average value, is designated as the brightness value of the measurement point at the position of light fixture 3, It is as shown in table 1 below.
Table 1:Each measurement point record sheet
Note:Bracket content refers to the angle coordinate on point correspondence distribution curve flux behind each test point
5th, gained brightness value is converted into light intensity value, reduction formula:
I=E × r2=E × 1.82=3.24 × E
Wherein, I is light intensity, and E is illumination, r by survey plane and light source distance.
6th, distribution curve flux is by polar coordinate representation, and polar origin (concentric circles circle centre position) is the center of the light-emitting area of light fixture 3, Each concentric circles represents a light intensity value, and more outer circle light intensity is bigger, wherein, angle value is the angle on section, in downward direction For 0 °, the angle that measurement point corresponds to 9 measurement points in distribution curve flux figure respectively is surveyed.
7th, the distribution curve flux of light fixture 3 is simply drawn out according to nine measurement points in Fig. 2, that is, completes the luminous intensity distribution detection of light fixture 3.
8th, rotating device 2 is turned clockwise 45 °, 45 ° of rotate counterclockwise respectively, opens light fixture 3, rice is measured with illumination photometer The brightness value of nine measurement points (6.1~6.9) of word, and record, each point is measured 3 times respectively, is taken its average value, is designated as light fixture 3 at the position point brightness value, repeat the 5th step to the 7th step.
Certainly, above-mentioned rice word pattern 5 can be substituted with recruitment word pattern or matrix pattern pattern.

Claims (9)

1. a kind of quickly match somebody with somebody light detection method, it is characterised in that is carried out according to the following steps:
An experiment darkroom is built first, and there is shading curtain at experiment darkroom four sides, and the shading rate of the shading curtain reaches More than 80% so that the ambient light illumination in experiment darkroom is 0.1lx;
Dark indoor distances ground 1.2m height is being tested, suspension is fixed with the light source of Arbitrary Rotation;
A meter word pattern is drawn on the ground, and this meter of word pattern is located at below light source, and multiple surveys are provided with rice word pattern Point is measured, the brightness value of each measurement point of rice word pattern is measured with illumination photometer, and brightness value is converted into light intensity value, that is, obtains simple Distribution curve flux.
2. the method as described in claim 1, it is characterised in that the length in the experiment darkroom is 4m, and width is 2m, is highly 1.8m。
3. the method as described in claim 1, it is characterised in that the measurement point set on the rice word pattern has 9, its In, the length that the 1st measurement point corresponds to rice word pattern side is 0.69m, and the 2nd measurement point corresponds to the length on rice word pattern side For 1.2m, the length that the 3rd measurement point corresponds to rice word pattern side is 2m, and the 4th measurement point corresponds to the length on rice word pattern side Spend for 0.44m, the length that the 5th measurement point corresponds to rice word pattern side is 0.69m, and the 6th measurement point corresponds to rice word pattern The length on side is 1.2m, and the length that the 7th measurement point corresponds to rice word pattern side is 2m, and the 8th measurement point corresponds to rice font figure The length on case side is 0.44m, and the 9th measurement point is on the vertical center line of light source.
4. the method as described in claim 1, it is characterised in that the reduction formula of the brightness value and light intensity value is:
I=E × r2=E × 1.82=3.24 × E
In formula, I is light intensity, and E is illumination, r by survey plane and light source distance.
5. the method as described in claim 1, it is characterised in that described Arbitrary Rotation light source is filled by light fixture and rotary shaft Put composition.
6. the method as described in claim 1, it is characterised in that the rotation mode of the shaft device rotation is with counterclockwise Rotate to be just, horizontal line is 0 °, and 0 °, 90 °, 45 ° and -45 ° is rotated respectively.
7. the method as described in claim 1, it is characterised in that the rice word pattern recruitment word pattern or matrix pattern figure Case is substituted.
8. the method as described in claim 1, it is characterised in that the simple distribution curve flux is different in different angles by light source The brightness value that point actual measurement is obtained, and then obtain light intensity value, that is, obtain easy distribution curve flux.
9. the method as described in claim 1, it is characterised in that the easy distribution curve flux is by polar coordinate representation, polar coordinates Origin is the light-emitting area center of light source, and each light-emitting area center represents a light intensity value, and more outer circle light intensity is bigger, wherein, angle Angle value is the angle on section, is in downward direction 0 °, and institute's measuring point corresponds to 9 angles in distribution curve flux figure respectively.
CN201611262710.7A 2016-12-30 2016-12-30 It is a kind of quickly to match somebody with somebody light detection method Pending CN107044908A (en)

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CN201611262710.7A CN107044908A (en) 2016-12-30 2016-12-30 It is a kind of quickly to match somebody with somebody light detection method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107830478A (en) * 2017-09-27 2018-03-23 苏州城时实业有限公司 Solar LED roadblock lamp manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107830478A (en) * 2017-09-27 2018-03-23 苏州城时实业有限公司 Solar LED roadblock lamp manufacturing method

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