CN103852452A - Method and system for testing light transmittance - Google Patents
Method and system for testing light transmittance Download PDFInfo
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- CN103852452A CN103852452A CN201210499718.0A CN201210499718A CN103852452A CN 103852452 A CN103852452 A CN 103852452A CN 201210499718 A CN201210499718 A CN 201210499718A CN 103852452 A CN103852452 A CN 103852452A
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Abstract
The invention provides a method for testing light transmittance. The method comprises the following steps of fixing a testing light source, aligning the testing light source to a tested position of a surface to be tested, measuring and recording a first illumination value of the testing light source at the tested position, fixing a transparent part to a positioning tool, putting the transparent part between the testing light source and the surface to be tested, measuring and recording a second illumination value of the testing light source at the tested position, carrying out contrast computation on the first illumination value and the second illumination value, and outputting light transmittance of the transparent part. A light transmittance calculation formula is shown in the formula of T<t>=(T<2>/T<1>)*100, and in the formula, T<t> represents light transmittance, T<2> represents the second illumination value and T<1> represents the first illumination value. The invention also provides a system for testing light transmittance. Through testing light transmittance of a light fixture transparent part, a research and development data base can be established and an important basis can be provided for research and development of light fixture.
Description
technical field
The present invention relates to a kind of method of testing, relate in particular to a kind of transmittance test method and test macro.
Background technology
Along with developing rapidly of industry, more and more important effect is also played in illumination.Due to the growing tension of energy problem, energy-saving illumination product more and more receives publicity.Energy-saving illumination product needed is considered such as some energy-saving indexs such as light fixture beam efficiency, light fixture energy efficiency factor, light fixture efficiency limit value, light fixture Energy efficiency evaluation values.Wherein, indispensable matching component when Transparent Parts is worked as lighting, plays protection, printing opacity, the effect such as anti-dazzle.If light fixture Transparent Parts transmittance is bad, will directly affects whole light fixture beam efficiency, thereby waste energy.Therefore,, for guaranteeing that light fixture beam efficiency index can the value of meeting design requirement, need verify at light fixture initial stage of development whether the transmittance of Transparent Parts meets the demands.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiency that above-mentioned prior art exists, and a kind of transmittance test method and test macro are proposed, by the test of the transmittance to light fixture Transparent Parts, just can judge exactly Transparent Parts light transmittance values, also can set up basic data, for the research and development of product in the future provide important evidence simultaneously.
For solving the problems of the technologies described above, the present invention proposes a kind of transmittance test method, comprises the steps: fixing test light source, and first brightness value of testing light source at test position measured and recorded to the test position by testing light source to locating tab assembly face; Fixing Transparent Parts, on positioning tool, is placed Transparent Parts between testing light source and measurement face, measures and record second brightness value of testing light source at test position; The transmittance of Transparent Parts will be exported after the first brightness value and the second brightness value comparing calculation; Wherein, the computing formula of transmittance is:
, in formula,
for described transmittance,
for described the second brightness value,
for described the first brightness value.
Preferably, the center that test position is measurement face.
Preferably, brightness value is calculated by illuminometer.
Preferably, measurement face arranges with testing light source at a distance of setpoint distance.
Preferably, setpoint distance is 1 meter.
Preferably, testing light source is electric torch.
The present invention also proposes a kind of transmittance test macro, comprising: for supporting the supporting module of testing light source; For the locating module of vertical fixing Transparent Parts; For measuring the measurement module of brightness value; For recording the memory module of the first brightness value and the second brightness value; Be used for according to the computing module of described the first brightness value and the second brightness value calculating transmittance; For exporting the output module of transmittance; Locating module and supporting module are fixed on same linear pattern moving guide rail simultaneously, and guarantee being centered close on same straight line of light source and Transparent Parts; Measurement module comprises the first illuminometer that is positioned at light source exit portal for measuring the first brightness value and for measuring second illuminometer that is positioned at Transparent Parts beam projecting mouth of the second brightness value.
Compared with prior art, transmittance test method of the present invention and test macro, by the transmittance of test light fixture Transparent Parts, can set up research and development data basis, for light fixture research and development in the future provide important evidence.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of transmittance test method of the present invention.
Fig. 2 is the structural drawing of transmittance test macro of the present invention.
Description of reference numerals is as follows: test macro 1: supporting module 10, locating module 11, measurement module 12, memory module 13, computing module 14 and output module 15; Transparent Parts 2; Testing light source 3; Measurement face 4.
Embodiment
In order to further illustrate principle of the present invention and structure, existing by reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail.
Refer to Fig. 1, transmittance test method of the present invention, concrete steps are as follows:
Before test, prepare test material and comprise: illumination photometry device, positioning tool, testing light source and distance measurement tools.In the present embodiment, illumination photometry device is illuminometer, and testing light source is electric torch, and distance measurement tools is ruler.
Step S101: in dark place, electric torch is placed on to corresponding height fixing, this height is set according to the physical dimension of Transparent Parts.Fixing flashlight, utilizes ruler test surfaces to be arranged on to the setpoint distance of electric torch.Open electric torch, the test position by electric torch to locating tab assembly face, measures and records first brightness value of electric torch at test position.
In the present embodiment, the center that test position is measurement face.Electric torch is 1 meter with the setpoint distance of the face of measurement.
Step S102: fixing Transparent Parts, on positioning tool, is placed Transparent Parts between electric torch and measurement face, measures and record second brightness value of electric torch at test position.
In step S102, must keep the placing height of electric torch and can not change with the distance of the face of measurement, otherwise can affect test data.
By positioning tool, can make Transparent Parts not tilt, the radial energy of testing light source vertically, through Transparent Parts, is avoided Transparent Parts obliquity effects test data.
Step S103: will after the first brightness value and the second brightness value comparing calculation, export the transmittance of Transparent Parts,
Wherein, the computing formula of transmittance is:
, in formula,
for described transmittance,
for described the second brightness value,
for described the first brightness value, in the present embodiment, thereby can repeatedly measure the first brightness value and the second brightness value and draw by changing the intensity of illumination of testing light source the value of transmittance, and the value of the transmittance repeatedly recording is averaged as the value of the transmittance of final output.
Refer to Fig. 2, the present invention also proposes a kind of transmittance test macro 1, comprising: supporting module 10, locating module 11, measurement module 12, memory module 13, computing module 14 and output module 15.Supporting module 10 supports testing light source 3, the vertical fixing Transparent Parts 2 of locating module 11, the illumination that measurement module 12 is measured the test position of testing light source 3 direct irradiations measurement faces 4 is the first brightness value, the illumination of measuring testing light source test position of measurement face 4 in the situation that having Transparent Parts is the second brightness value, memory module 13 records the first brightness value and the second brightness value, computing module 14 calculates transmittance according to described the first brightness value and the second brightness value, and output module 15 is exported transmittance.Measurement module 14 comprises the first illuminometer that is positioned at light source 3 exit portals for measuring the first brightness value and for measuring second illuminometer that is positioned at Transparent Parts 2 beam projecting mouths of the second brightness value.Memory module 13, computing module 14 and output module 15 can be respectively storer, computing center and the display on computing machine.First, locating module 11 is fixed on same linear pattern moving guide rail with supporting module 10 simultaneously, and guarantees being centered close on same straight line of light source 3 and Transparent Parts 2.Then the first illuminometer is measured the first brightness value, and the second illuminometer is measured the second brightness value, then the first brightness value and the second brightness value are stored in storer, last, and computing center's operational formula draws transmittance, the show transparency light transmittance values of part of display.
Compared with prior art, transmittance test method of the present invention and test macro, by the transmittance of test light fixture Transparent Parts, can be set up research and development data basis, and for light fixture research and development in the future provide important evidence, and the method is simple to operate, effective, cost is low.
The foregoing is only better possible embodiments of the present invention, not limit the scope of the invention.The equivalent structure that all utilizations instructions of the present invention and accompanying drawing content have been done changes, and is all included in protection scope of the present invention.
Claims (7)
1. a transmittance test method, is characterized in that, comprises the steps:
Fixing test light source, aims at described testing light source the test position of described measurement face, measures and record first brightness value of described testing light source at described test position;
Fixing Transparent Parts, on positioning tool, is placed described Transparent Parts between described testing light source and described measurement face, measures and record second brightness value of described testing light source at described test position;
The transmittance of described Transparent Parts will be exported after described the first brightness value and the second brightness value comparing calculation;
Wherein, the computing formula of described transmittance is:
, in formula,
for described transmittance,
for described the second brightness value,
for described the first brightness value.
2. transmittance test method as claimed in claim 1, is characterized in that, the center that described test position is described measurement face.
3. transmittance test method as claimed in claim 1, is characterized in that, described brightness value is calculated by illuminometer.
4. transmittance test method as claimed in claim 1, is characterized in that, described measurement face and described testing light source setpoint distance apart.
5. transmittance test method as claimed in claim 4, is characterized in that, described setpoint distance is 1 meter.
6. transmittance test method as claimed in claim 1, is characterized in that, described testing light source is electric torch.
7. a transmittance test macro, is characterized in that, comprising:
For supporting the supporting module of described testing light source;
For the locating module of vertical fixing described Transparent Parts;
For measuring the measurement module of described brightness value;
For recording the memory module of described the first brightness value and the second brightness value;
Be used for according to the computing module of described the first brightness value and the second brightness value calculating transmittance;
For exporting the output module of described transmittance;
Described locating module and described supporting module are fixed on same linear pattern moving guide rail simultaneously, and guarantee on the same straight line of being centered close to of described light source and described Transparent Parts;
Described measurement module comprises the first illuminometer for measuring the described light source exit portal of being positioned at of the first brightness value and for measuring the second illuminometer of the described Transparent Parts beam projecting of being positioned at of the second brightness value mouth.
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| CN201210499718.0A CN103852452A (en) | 2012-11-28 | 2012-11-28 | Method and system for testing light transmittance |
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| CN201210499718.0A CN103852452A (en) | 2012-11-28 | 2012-11-28 | Method and system for testing light transmittance |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424614A (en) * | 2015-12-20 | 2016-03-23 | 合肥艾斯克光电科技有限责任公司 | Performance test method of LED package glue |
| CN106813895A (en) * | 2015-11-30 | 2017-06-09 | 宁波舜宇光电信息有限公司 | The test system and method for testing of prism transmitance |
| CN107238484A (en) * | 2016-03-28 | 2017-10-10 | 京东方科技集团股份有限公司 | The detection method and detection means of transparent display screen definition |
| CN108645674A (en) * | 2018-05-11 | 2018-10-12 | 西安公路研究院 | A kind of light colour pitch light transmittance rapid detection method |
| CN111458107A (en) * | 2019-01-18 | 2020-07-28 | 宁波群志光电有限公司 | Automatic detection system and method thereof |
| CN111896232A (en) * | 2020-09-30 | 2020-11-06 | 歌尔光学科技有限公司 | Optical machine module testing method, equipment, system and computer readable storage medium |
| CN112839221A (en) * | 2021-01-08 | 2021-05-25 | 广州视源电子科技股份有限公司 | Quantification method and quantification device for definition of display equipment under ambient light |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106813895A (en) * | 2015-11-30 | 2017-06-09 | 宁波舜宇光电信息有限公司 | The test system and method for testing of prism transmitance |
| CN105424614A (en) * | 2015-12-20 | 2016-03-23 | 合肥艾斯克光电科技有限责任公司 | Performance test method of LED package glue |
| CN107238484A (en) * | 2016-03-28 | 2017-10-10 | 京东方科技集团股份有限公司 | The detection method and detection means of transparent display screen definition |
| CN108645674A (en) * | 2018-05-11 | 2018-10-12 | 西安公路研究院 | A kind of light colour pitch light transmittance rapid detection method |
| CN108645674B (en) * | 2018-05-11 | 2021-01-26 | 西安公路研究院 | Method for rapidly detecting light transmittance of bright asphalt |
| CN111458107A (en) * | 2019-01-18 | 2020-07-28 | 宁波群志光电有限公司 | Automatic detection system and method thereof |
| CN111896232A (en) * | 2020-09-30 | 2020-11-06 | 歌尔光学科技有限公司 | Optical machine module testing method, equipment, system and computer readable storage medium |
| CN112839221A (en) * | 2021-01-08 | 2021-05-25 | 广州视源电子科技股份有限公司 | Quantification method and quantification device for definition of display equipment under ambient light |
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Application publication date: 20140611 |