CN104792498B - A kind of light source dynamic testing method - Google Patents
A kind of light source dynamic testing method Download PDFInfo
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- CN104792498B CN104792498B CN201510142798.8A CN201510142798A CN104792498B CN 104792498 B CN104792498 B CN 104792498B CN 201510142798 A CN201510142798 A CN 201510142798A CN 104792498 B CN104792498 B CN 104792498B
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Abstract
The invention discloses a kind of light source dynamic testing method, scan-type test of light source system includes optic test disk, motor and transmission mechanism；Motor driving transmission mechanism drives optic test disk to be scanned along light source length direction to be measured；The radian A of optic test disk is 0 °~360 ° of arc surface；It is uniformly arranged B photoelectric sensor on the arc surface of optic test disk, the angle between adjacent photosensors is A/ (B 1)；Demarcated to obtain the calibration coefficient K of photoelectric sensor with standard sources；Light-metering source is treated with this test system and is scanned test, and the illuminance value that each position in light-metering source is treated according to this test system sums to obtain the total illumination E of light source to be measuredIt is to be measured；Each point illuminance according to collecting obtains the light intensity distributions curve map of light source to be measured；According to calibration coefficient K to EIt is to be measuredIt is modified, obtains the luminous flux Ф of light source to be measuredIt is to be measured.The method of the present invention can rapidly and accurately obtain light distribution and the luminous flux of light source, and judge that bad lamp position is put, and be adapted to industrialized production.
Description
Technical field
The present invention relates to a kind of energy testing light source light distribution and the light source dynamic testing method of luminous flux.
Background technology
The important parameter when curve of light distribution and luminous flux of light source are all applications, it is the important indicator for evaluating light source.
The method of testing light source luminous flux has two kinds at present：One kind is that measured light is placed in the integration of dimension by integrating sphere
In ball, the light for allowing illuminating source to send is uniformly distributed, and then measures the contrast of illumination twice by standard lamp and tested lamp, is calculated
Obtain luminous flux；Another kind is measured by distribution photometer, by light intensity or Illumination Distribution of the testing light source in space, and it is right
The total space integrates to obtain total light flux.For the light intensity on measurement space different directions, distribution photometer usually requires a use
In support and positioning light fixture or the mechanical device of light source and luminosity probe, and make light fixture relative in spatial dimension with popping one's head in
Rotation is mobile, and luminosity probe obtains data and handled simultaneously.
For integrating sphere measurement luminous flux, due to needing standard lamp to calibrate, if the spatial distribution and light intensity of sample point
There is larger difference in cloth, can bring larger measurement error with working standard lamp.Especially LED lamp product it is luminous exist it is bright
Aobvious spatial color inhomogeneities, the accurately measurement of the special luminescent properties of LED product for integrating sphere luminous flux is great to choose
War.
Distribution photometer system is a kind of accurate optical test equipment, in measuring distance, test angle, test environment
Veiling glare and photometric measurement precision will be higher requirement.Measurement firstly for luminous intensity is certain by measuring certain
Apart from upper illumination, light intensity value is calculated away from inverse square law according to light measurement.
I.e.：I (C, r)=E (C, r) * R2 (C, r), wherein：I is the light intensity on measurement direction, and E is detector opto-electronic receiver
The illumination in face, R are measuring distance.But do not applied to for many light fixtures, especially LED lamp, the luminosity law near field, CIE
File has made clear and definite regulation to this, and the luminosity measurement distance of light fixture is sufficiently large, two kinds of measurement distances of generally use:Angle pencil of ray
Light fixture is 12m~15m, and arrow beam of light high-intensity lamp is 30m~35m, ensures far-field measurement precision.Secondly, distribution photometer test
Be the luminosity data of light fixture in all directions, it is rotated and the angle precision of alignment system has higher requirement, comprising
Angle precision, axis precision, reflective mirror surface figure accuracy etc..Finally, veiling glare is to influence measuring accuracy most in distributed luminosity measurement
One of important factor wants the veiling glare of strictly controlled environment, it is necessary to the darkroom test environment of standard, during test.
In summary, the limitation of integrating sphere measurement and distribution photometer method of testing tested person method and apparatus size, base
It can only in laboratory conditions be measured on this, correctly to test the luminous flux and the curve of light distribution of measured light, consider again
The efficiency of test and the operation convenience of test equipment, the easy for installation of production line quickly test and measured light is adapted to, it is existing
Some method of testings are difficult to meet the testing requirement of production line.
The content of the invention
It is an object of the invention to provide one kind quick and precisely and to be restricted few, is adapted to the light source of industrial production detection to move
State method of testing.
The technical scheme for realizing the object of the invention is a kind of light source dynamic testing method, is comprised the following steps：
Step 1：Prepare scan-type test of light source system：The scan-type test of light source system include optic test disk,
Motor and transmission mechanism；The motor driving transmission mechanism drives optic test disk to be swept along light source length direction to be measured
Retouch；The optic test disk is the arc surface that radian A is 0 °~360 °；The optic test disk is uniformly set on arc surface
B photoelectric sensor is put, B is natural number, is A/ (B-1) more than the angle between 1 adjacent photosensors；Or the optics
Test plate sets 1 photoelectric sensor, 0 °~360 ° of optic test disk rotation；
Step 2：Calculate the luminous flux of the standard sources under standard method of test and the standard sources under this test system
Calibration coefficient K between luminous flux；
Step 3：Light-metering source is treated with this test system and is scanned test, and it is every to treat light-metering source according to this test system
The illuminance value of individual position sums to obtain the total illumination E of light source to be measuredIt is to be measured；Each point illuminance according to collecting obtains treating light-metering
The light intensity distributions curve map in source；
Step 4：The calibration coefficient K obtained according to step 2 is to EIt is to be measuredIt is modified, obtains the luminous flux of light source to be measured
ФIt is to be measured。
It is anterior in each photoelectric sensor when B photoelectric sensor is set on the optic test disk in the step 1
Diaphragm is installed, the size of aperture ensures that photoelectric sensor only gathers the light data in A/ (B-1) angle.
The radian of optic test disk in the step 1 is 300 °, with 30 ° of interval settings, 31 photoelectric sensors.
The photoelectric sensor is silicon photocell.
In the step 2, the method for testing of the luminous flux of the standard sources under standard method of test is with canonical product bulb separation
Or the luminous flux of spatial light intensity Distribution Test system measurement standard light source.
In the step 2 with this test system standard sources is tested and step 3 in this test system pair
The method that light source to be measured is scanned test is：Optic test disk moves along light source length direction, thus optic test disk
On all photoelectric sensors obtain the illumination degrees of data of each point on each section in light source length direction, according to each position
Illuminance sums to obtain total illuminance, then calculates the luminous flux Ф of light source.
The photoelectric sensor need to ensure each optical sensor and light source with the distance between standard sources and light source to be measured
The distance between reach the requirement of test.
The photoelectric sensor obtain the data of light source each point illuminance to be measured method include Static Sampling method or
Sweep and adopt synchronous method；The Static Sampling method is：Motor stops after being moved to test position, is then sampled, by this position
The illuminance put samples after recording further according to test step-length mobile motor to next test position, records light source survey
Try to be calculated again after all illuminance of length direction；Described sweep adopts synchronous method and is：Utilize motor scanning and A/D samplings
Simultaneous techniques, while controlled motor movement and A/D samplings, obtain the illumination degrees of data of each test position and then are calculated.
After employing above-mentioned technical proposal, the present invention has following positive effect：(1) invention of the invention can be fast
Speed accurately tests the luminous flux and the curve of light distribution of various light sources, and the test mode of scan-type can facilitate the production with factory
Line or p-wire are combined, and are reached production test integration and are carried out.
(2) scan method of the invention can be it is static using method can also sweep to adopt synchronous method, can be according to reality
Border situation flexibly selects.
(3) present invention can be that multiple photoelectric sensors are distributed on optic test disk or only fill a photoelectricity
Sensor is rotated by disk, no matter comprehensive to light source progress can be swept using which kind of mode, optic test disk
Retouch, test result is more accurate.
(4) distance of light source of the invention and photoelectric sensor reaches the requirement of test, thus can be each detection
The tiny area of device test is considered as spot light, effectively eliminates the error that lamp tube shapes are brought.
(5) the obtained surface of intensity distribution is tested according to the inventive method, can also know that bad lamp position is put in time and exactly.
Brief description of the drawings
In order that present disclosure is easier to be clearly understood, it is right below according to specific embodiment and with reference to accompanying drawing
The present invention is described in further detail, wherein
Fig. 1 is the schematic diagram of the optic test disk of the present invention.
Fig. 2 is the curve of light distribution figure obtained using the method for testing of the present invention.
Embodiment
(embodiment 1)
A kind of light source dynamic testing method of the present embodiment, comprises the following steps：
Step 1：Prepare scan-type test of light source system：Scan-type test of light source system includes optic test disk (as schemed
Shown in 1), motor and transmission mechanism；Motor driving transmission mechanism drives optic test disk to be carried out along light source length direction to be measured
Scanning；Optic test disk is the arc surface that radian A is 300 °；Optic test disk is uniformly arranged 31 silicon light on arc surface
For battery as photoelectric sensor, the angle between adjacent photosensors is 30 °, and light is provided with each photoelectric sensor front portion
Door screen, the size of aperture ensure that photoelectric sensor only gathers the light data in 30 ° of angles.
Step 2：Calculate the luminous flux of the standard sources under standard method of test and the standard sources under this test system
Calibration coefficient K between luminous flux；The method of testing of the luminous flux of standard sources under standard method of test is to use canonical product
The luminous flux of bulb separation or spatial light intensity Distribution Test system measurement standard light source.Standard sources is surveyed with this test system
With this test system light-metering source is treated in examination and step 3 be scanned the method for test be：Optic test disk is grown along light source
Direction movement is spent, thus all photoelectric sensors on optic test disk obtain each point on each section in light source length direction
Illumination degrees of data, summed to obtain total illuminance according to the illuminance of each position, then calculate light source luminous flux Ф.
Step 3：Light-metering source is treated with this test system and is scanned test, and it is every to treat light-metering source according to this test system
The illuminance value of individual position sums to obtain the total illumination E of light source to be measuredIt is to be measured；Each point illuminance according to collecting obtains treating light-metering
The light intensity distributions curve map in source；The method that photoelectric sensor obtains the data of light source each point illuminance to be measured includes Static Sampling
Method is swept and adopts synchronous method；Static Sampling method is：Motor stops after being moved to test position, is then sampled, will
The illuminance of this position samples after recording further according to test step-length mobile motor to next test position, records light
Calculated again after all illuminance in source testing length direction；Sweep and adopt synchronous method and be：Utilize motor scanning and A/D samplings
Simultaneous techniques, while controlled motor movement and A/D samplings, obtain the illumination degrees of data of each test position and then are calculated.
Step 4：The calibration coefficient K obtained according to step 2 is to EIt is to be measuredIt is modified, obtains the luminous flux of light source to be measured
ФIt is to be measured。
The distance between photoelectric sensor and standard sources and light source to be measured need to be ensured between each optical sensor and light source
Distance reach the requirement of test.
The data that following table is distributed photometer and the inventive method is tested, are then obtained such as accompanying drawing according to the test data
Curve of light distribution figure shown in 2, it is known that substantially error free.
| Angle | -90 | -80 | -70 | -60 | -50 | -40 | -30 | -20 | -10 | 0 |
| Light intensity data (distributed photometer test) | 2.03 | 46.94 | 89.03 | 132.08 | 173.61 | 207.94 | 236.1 | 258.2 | 267.05 | 272.19 |
| Light intensity data (test of this method of testing) | 2.01 | 44.77 | 92.39 | 140.47 | 171.53 | 214.15 | 235.54 | 256.76 | 269.49 | 270.78 |
| Angle | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | |
| Light intensity data (distributed photometer test) | 266.88 | 257.38 | 234.76 | 207.12 | 172.02 | 130.87 | 87.71 | 46.13 | 2.86 | |
| Light intensity data (test of this method of testing) | 263.62 | 254.54 | 232.37 | 205.30 | 168.17 | 134.36 | 84.14 | 39.86 | 2.83 |
, will be using the light fixture of the method test of the present invention with being carried out pair using the light fixture of integrating sphere measurement for luminous flux
Than deviation is very small, it is seen that the method test result degree of accuracy of the invention is high.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., it should be included in the guarantor of the present invention
Within the scope of shield.
Claims (7)
1. a kind of light source dynamic testing method, it is characterised in that comprise the following steps：
Step 1：Prepare scan-type test of light source system：The scan-type test of light source system includes optic test disk, motor
And transmission mechanism；The motor driving transmission mechanism drives optic test disk to be scanned along light source length direction to be measured；Institute
The radian A for stating optic test disk is 0 °~360 ° of arc surface；The optic test disk includes disc body and uniformly set
B photoelectric sensor being placed on the arc surface of disc body, disc body are formed by the fastening of front and rear two pieces of panels, and B is nature
Number, more than 1, the angle between adjacent photosensors is A/ (B-1)；Or the optic test disk sets 1 photoelectric transfer
Sensor, 0 °~360 ° of optic test disk rotation；
Step 2：The luminous flux and the light of the standard sources under this test system for calculating the standard sources under standard method of test lead to
Calibration coefficient K between amount；
Step 3：Light-metering source is treated with this test system and is scanned test, and each position in light-metering source is treated according to this test system
The illuminance value put sums to obtain the total illumination E of light source to be measuredIt is to be measured；Each point illuminance according to collecting obtains light source to be measured
Light intensity distributions curve map；
Step 4：The calibration coefficient K obtained according to step 2 is to EIt is to be measuredIt is modified, the luminous flux Ф for obtaining light source to be measured is to be measured；
When B photoelectric sensor is set on the optic test disk in the step 1, each photoelectric sensor front portion is provided with
Diaphragm, the size of aperture ensure that photoelectric sensor only gathers the light data in A/ (B-1) angle.
A kind of 2. light source dynamic testing method according to claim 1, it is characterised in that：Optics in the step 1 is surveyed
The radian for trying disk is 300 °, with 30 ° of interval settings, 31 photoelectric sensors.
A kind of 3. light source dynamic testing method according to claim 2, it is characterised in that：The photoelectric sensor is silicon light
Battery.
A kind of 4. light source dynamic testing method according to claim 3, it is characterised in that：In the step 2, standard is surveyed
The method of testing of the luminous flux of standard sources under method for testing is to be surveyed with canonical product bulb separation or spatial light intensity Distribution Test system
Measure the luminous flux of standard sources.
A kind of 5. light source dynamic testing method according to claim 4, it is characterised in that：Tested in the step 2 with this
System standard sources is tested and step 3 in this test system treat light-metering source and be scanned the method for test and be：
Optic test disk moves along light source length direction, and thus all photoelectric sensors on optic test disk obtain light source length
The illumination degrees of data of each point on each section in direction, summed to obtain total illuminance, Ran Houji according to the illuminance of each position
Calculate the luminous flux Ф of light source.
A kind of 6. light source dynamic testing method according to claim 5, it is characterised in that：The photoelectric sensor and standard
The distance between light source and light source to be measured need to ensure that the distance between each optical sensor and light source reach the requirement of test.
A kind of 7. light source dynamic testing method according to claim 6, it is characterised in that：The photoelectric sensor is obtained and treated
The method of the data of light-metering source each point illuminance includes Static Sampling method or swept to adopt synchronous method；The Static Sampling method
For：Motor stops after being moved to test position, is then sampled, further according to survey after the illuminance of this position is recorded
The long mobile motor of try samples to next test position, and all illuminance for recording test of light source length direction are entered again afterwards
Row calculates；Described sweep adopts synchronous method and is：Using motor scanning and A/D sample-synchronous technologies, while controlled motor is mobile and A/D
Sampling, obtain the illumination degrees of data of each test position and then calculated.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105222994B (en) * | 2015-09-25 | 2017-10-13 | 北京奥博泰科技有限公司 | A kind of distributed photometer |
| CN106908155B (en) * | 2017-03-03 | 2019-02-12 | 上海应用技术大学 | A kind of wavelength measurement instrument |
| CN110849587A (en) * | 2018-08-21 | 2020-02-28 | 深圳市汇顶科技股份有限公司 | Light source tester, method, device, equipment and storage medium |
| CN109282972B (en) * | 2018-11-23 | 2023-09-22 | 福建工程学院 | Device and method for measuring light intensity parameters of special lamp |
| CN111000545A (en) * | 2019-12-19 | 2020-04-14 | 广电计量检测（武汉）有限公司 | Wearable device heart rate metering device and method for simulating blood pulsation |
| CN113218631A (en) * | 2021-04-29 | 2021-08-06 | 常州联影智融医疗科技有限公司 | Light intensity distribution testing device and testing method for light source |
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