CN106768326A - A kind of device and its detection method for detecting LED white light spectral qualities - Google Patents
A kind of device and its detection method for detecting LED white light spectral qualities Download PDFInfo
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- CN106768326A CN106768326A CN201611044722.2A CN201611044722A CN106768326A CN 106768326 A CN106768326 A CN 106768326A CN 201611044722 A CN201611044722 A CN 201611044722A CN 106768326 A CN106768326 A CN 106768326A
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- 238000001514 detection method Methods 0.000 title claims abstract description 22
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- 230000003287 optical effect Effects 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 18
- 230000004044 response Effects 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 238000012546 transfer Methods 0.000 claims abstract description 4
- 238000004148 unit process Methods 0.000 claims abstract description 4
- 238000001228 spectrum Methods 0.000 claims description 11
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- 238000005286 illumination Methods 0.000 description 8
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- 241001062009 Indigofera Species 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
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Abstract
A kind of device and its detection method for detecting LED white light spectral qualities, takes the first photodetector and tests it in 450nm 470nm wave bands and the average response degree R of 570nm 590nm wave bands during the second photodetector is respectively placed in detector spectral response test system1And R2The photoelectric current I obtained under blue light action is detected by first photodetector1With the lower photoelectric current I for obtaining of the second photodetector detection gold-tinted effect2；The data transfer that first photodetector and the second photodetector are measured is to signal processing unit, a=I1/I2, m=R1/R2, D=a/m embodies LED blue light and gold-tinted ratio by obtaining light intensity ratio D, and the light intensity ratio D that signal processing unit processes are obtained passes to display unit.The present invention is cooperated by simple several parts and constituted, simple structure, low cost, the data of detection required for being obtained by blue filter and gold-tinted optical filter and photoelectric sensor.
Description
Technical field
The present invention relates to a kind of white-light illuminating product spectral quality detection means, more particularly, to one kind for detecting LED
The device and its detection method of white light spectral quality.
Background technology
With the development of GaN semiconductor material technologies, white light LEDs have turned into the main components of illumination increasingly.At present
The main implementation technique of white light LEDs is：The blue light GaN LED chips of 450-460nm wavelength are encapsulated in and are mixed with yellow fluorescent powder
In resin, blue light GaN LED chips send blue light and excite yellow fluorescent powder to send gold-tinted, and blue light GaN LED chips send indigo plant
Light is sent gold-tinted and is mixed by a certain proportion of with yellow fluorescent powder, realizes white light.Can be adjusted by the proportioning of fluorescent material
Whole colour temperature.Almost all of White-light LED illumination product uses this kind of technology in the market.
With the development of LED illumination technology, and people are for the concern of health problem, using the white light of above-mentioned technology
Blue light contamination problem in LED illumination product is increasingly paid close attention to by people.Produced using the White-light LED illumination of above-mentioned technology
Product, have because manufacturer is not tight to check on to quality, cause product blue light leakage problem serious.It is most important, due to LED core
Piece generates heat at work, causes the performance of fluorescent material and can constantly degenerate, so as to cause blue light ingredient increase and yellow component compared with
It is few, such as light fixture is changed not in time, blue light ratio can be caused to increase, blue light leakage is serious, produces blue light harm.General LED illumination
The spectral detection of product relies primarily on integrating sphere and spectrometer and carries out, and integrating sphere and spectrometer belong to relatively valuable equipment instrument
Device, price is very expensive, and volume is big, it has not been convenient to carry.At present, there are a kind of portable spectrum irradiatometer, volume in market
It is smaller, can carry, but it is expensive, be not suitable for common application.
For numerous ordinarily residents, the subject matter of care whether there is excessive blue light leakage, and whether blue light ingredient is excessive
And certain harm is produced to people.Above instrument is usually the detecting instrument of the more scientific research apparatus of specialty or specialty, for general
Lead to civilian being not appropriate for.It is contemplated that a kind of simple, practicality of invention, low cost, the LED light of small volume spectrum mass detecting instrument
Device, can fast, easily reflect the blue light leakage problem of LED white-light illuminating light fixtures.
White light LEDs product in existing market, is virtually all mixed using blue light GaN LED chips plus yellow fluorescent powder
Light is formed.For this kind of product, fluorescent material ratio is improper to cause blue light ingredient more, produce certain blue light harm；Or
Person's encapsulation technology is unqualified, will also result in that blue light ingredient is more, produces certain blue light harm；It is most important, with LED white lights
The use of illuminating product, due to chip heating, causes the performance of fluorescent material constantly to decline, and incident is exactly indigo plant in spectrum
Light composition increases and yellow component is reduced.And these phenomenons are to have no idea to be divided by naked eyes for common user
Distinguish, can only be detected by instrument.The detecting instrument of LED white light product spectrum can be detected, it is all sufficiently expensive, and volume compared with
Greatly.For most of LED white-light illuminatings product, we only need to know the beam intensity ratio of blue light and the main wave band of gold-tinted two
Example may determine that LED white-light illuminating product spectral qualities, that is, may determine that whether LED white-light illuminatings product is present
Serious fluorescent material is degenerated or product quality problems in itself.
The content of the invention
The purpose of the present invention is asked for LED white-light illuminating product spectral quality testing costs are higher in solution family life
A kind of topic, there is provided device and its detection method for detecting LED white light spectral qualities.
The present invention is the deficiency of solution above-mentioned technical problem, and the technical scheme for being used is：
A kind of device for detecting LED white light spectral qualities, including support, only transmit 450nm-470nm wave band blue lights
Blue filter and the gold-tinted optical filter for only transmitting 570nm-590nm wave band gold-tinteds, blue filter and gold-tinted optical filter are pacified
On support, blue filter lower section is provided with the first photodetector, and gold-tinted optical filter lower section is provided with the second smooth electrical resistivity survey
Device is surveyed, signal processing unit and display unit are additionally provided with support, the first photodetector and the second photodetector are examined
The optical signal of survey passes to signal processing unit, and signal processing unit exports the result after treatment to display unit.
A kind of detection method for utilizing the described device for detecting LED white light spectral qualities, comprises the following steps：
Take the first photodetector and the second photodetector be respectively placed in detector spectral response test system test its
The average response degree R of 450nm-470nm wave bands and 570nm-590nm wave bands1And R2；By blue filter and gold-tinted optical filter
The spectrum for filtering LED white lights to be detected respectively obtains blue light and gold-tinted respectively, then is detected by first photodetector
The photoelectric current I obtained under blue light action1（Photodetector is a kind of device that can convert optical signals into electric signal, generation
Size of current be directly proportional to intensity of illumination）With the lower photoelectric current I for obtaining of the second photodetector detection gold-tinted effect2；By
To signal processing unit, it is a, detection to define photoelectric current ratio to the data transfer that one photodetector and the second photodetector are measured
Device response intensity ratio is m, and beam intensity ratio is D, a=I1/I2, m=R1/R2, D=a/m embodies LED by obtaining light intensity ratio D
Blue light and gold-tinted ratio, the light intensity ratio D that signal processing unit processes are obtained pass to display unit.
The beneficial effects of the invention are as follows：The present invention is cooperated by simple several parts and constituted, simple structure, cost
It is low, the data of detection required for being obtained by blue filter and gold-tinted optical filter and photoelectric sensor, while passing through formula pair
Data carry out treatment and obtain the blue light numerical value for quantifying, using blue light and gold-tinted in use because the change of fluorescent material is caused
Both direct contents mutual conversion so as to influence blue content to change the reason for, it is only necessary to detection ratio between the two is just
Can realize that blue content is detected, obtain whether blue content increases, by ratio R and the standard value R that will calculate0It is right to carry out
Than showing whether blue light meets standard, can LED white-light illuminatings product be continuing with.
Brief description of the drawings
Fig. 1 is structural representation sketch of the invention.
Fig. 2 is the spectrum schematic diagram of LED before fluorescent material is degenerated.
Fig. 3 is the spectrum schematic diagram of LED after fluorescent material is degenerated.
Graphical indicia：101st, blue filter；102nd, gold-tinted optical filter；103rd, the first photodetector；104th, the second light
Electric explorer；105th, signal processing unit；106th, display unit.
Specific embodiment
Shown in figure, specific embodiment is as follows：
A kind of device for detecting LED white light spectral qualities, including support, only transmit 450nm-470nm wave band blue lights
Blue filter 101 and the gold-tinted optical filter 102 for only transmitting 570nm-590nm wave band gold-tinteds, blue filter 101 and gold-tinted are filtered
Mating plate 102 is installed on support, and the lower section of blue filter 101 is provided with the first photodetector 103, gold-tinted optical filter 102
Lower section is provided with the second photodetector 104, and signal processing unit 105 and display unit 106, first are additionally provided with support
The optical signal of the detection of 103 and second photodetector of photodetector 104 passes to signal processing unit, and signal processing unit will
Result after treatment is exported to display unit.
A kind of detection method for utilizing the described device for detecting LED white light spectral qualities, comprises the following steps：
Take the first photodetector and the second photodetector be respectively placed in detector spectral response test system test its
The average response degree R of 450nm-470nm wave bands and 570nm-590nm wave bands1And R2；By blue filter and gold-tinted optical filter
The spectrum for filtering LED white lights to be detected respectively obtains blue light and gold-tinted respectively, then is detected by first photodetector
The photoelectric current I obtained under blue light action1（Photodetector is a kind of device that can convert optical signals into electric signal, generation
Size of current be directly proportional to intensity of illumination）With the lower photoelectric current I for obtaining of the second photodetector detection gold-tinted effect2；By
To signal processing unit, it is a, detection to define photoelectric current ratio to the data transfer that one photodetector and the second photodetector are measured
Device response intensity ratio is m, and beam intensity ratio is D, a=I1/I2, m=R1/R2, D=a/m embodies LED by obtaining light intensity ratio D
Blue light and gold-tinted ratio, the light intensity ratio D that signal processing unit processes are obtained pass to display unit.
For the white-light illuminating product of different purposes, this D value requires different, such as outdoor lighting, and D is in general not
Higher than 1.65, for LED desk lamp product, R values are generally not more than 1.34, can be considered safe handling scope.
The photochemical effect i.e. retina blue light harm that wavelength causes after the irradiation of 400~500 nm wave bands.
As many as played a major role in the light radiation harm of LED light sources, and be the several times of pyrolytic damage mechanism.Blue light harm can cause view
The degenerative change of film, forms the photic retinitis, and irreversible damage is caused to human eye retina, and being capable of blinding.But it is blue
The wave band of light is 450-470nm, it can be seen that the light of influence is produced on human body based on blue light, and LED LED in use
Chip generates heat at work, causes the performance of fluorescent material and can constantly degenerate, and increases and yellow component so as to cause blue light ingredient
It is less, such as light fixture is changed not in time, blue light ratio can be caused to increase, blue light leakage is serious, produces blue light harm.As accompanying drawing 2 is
Normal LED white-light illuminating product spectrum schematic diagrames, Fig. 3 is fluorescent material seriously degeneration LED white-light illuminatings product spectrum schematic diagram, because
This is by the spectral quality that detects the beam intensity ratio of blue light and gold-tinted to determine LED white-light illuminating products.
Technical scheme and implementation method cited by the present invention and non-limiting, with the technical scheme cited by the present invention and
Implementation method is equivalent or effect same approach is all in the range of the present invention is protected.
Claims (2)
1. a kind of device for detecting LED white light spectral qualities, it is characterised in that：Including support, only transmit 450nm-
The blue filter of 470nm wave band blue lights and the gold-tinted optical filter for only transmitting 570nm-590nm wave band gold-tinteds, blue filter
It is installed on support with gold-tinted optical filter, blue filter lower section is provided with the first photodetector, gold-tinted optical filter lower section
Be provided with the second photodetector, be additionally provided with signal processing unit and display unit on support, the first photodetector and
The optical signal of the second photodetector detection passes to signal processing unit, signal processing unit by the result after treatment export to
Display unit.
2. a kind of detection method of the device for detecting LED white light spectral qualities utilized described in claim 1, its feature
It is：Comprise the following steps：Take the first photodetector and the second photodetector is respectively placed in detector spectral response survey
It is tested in test system in 450nm-470nm wave bands and the average response degree R of 570nm-590nm wave bands1And R2；Filtered by blue light
The spectrum that mating plate and gold-tinted optical filter filter LED white lights to be detected respectively obtains blue light and gold-tinted respectively, then by described
The photoelectric current I obtained under one photodetector detection blue light action1With the detection lower acquisition of gold-tinted effect of the second photodetector
Photoelectric current I2；The data transfer that first photodetector and the second photodetector are measured defines light to signal processing unit
Electric current ratio is a, and explorer response strength ratio is m, and beam intensity ratio is D, a=I1/I2, m=R1/R2, D=a/m, by obtaining beam intensity ratio
Value D embodies LED blue light and gold-tinted ratio, and the light intensity ratio D that signal processing unit processes are obtained passes to display unit.
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| CN201611044722.2A CN106768326B (en) | 2016-11-24 | 2016-11-24 | A kind of device and its detection method for being used to detect LED white light spectral qualities |
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| CN201611044722.2A CN106768326B (en) | 2016-11-24 | 2016-11-24 | A kind of device and its detection method for being used to detect LED white light spectral qualities |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621309A (en) * | 2017-09-20 | 2018-01-23 | 南昌大学 | A kind of visualization appraisal procedure of light source blue light harm and non-vision effect |
| CN109459212A (en) * | 2018-11-07 | 2019-03-12 | 常州工学院 | A kind of LED life appraisal procedure based on blue light harm |
| CN110389473A (en) * | 2018-04-17 | 2019-10-29 | 群创光电股份有限公司 | Show equipment and preparation method thereof |
| CN110530804A (en) * | 2019-08-26 | 2019-12-03 | 松山湖材料实验室 | Optical detection light source design method and its light source |
| CN113739914A (en) * | 2021-09-02 | 2021-12-03 | 浙江阳光照明电器集团股份有限公司 | Simple method for distinguishing sunlight-like LEDs |
| CN116183182A (en) * | 2023-04-23 | 2023-05-30 | 常州星宇车灯股份有限公司 | Detection system and detection method for automotive laser lamp |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034006A (en) * | 2007-03-13 | 2007-09-12 | 郑晓明 | Method for improving measurement precision of photometry measuring instrument |
| CN102132200A (en) * | 2009-09-02 | 2011-07-20 | 光远科技股份有限公司 | Liquid crystal display with led backlight plate and attenuation rapid detection method thereof |
| CN103344417A (en) * | 2013-07-09 | 2013-10-09 | 余鸿铭 | Blue light tester |
| US20140285996A1 (en) * | 2004-08-02 | 2014-09-25 | Ge Lighting Solutions Llc | White light apparatus with enhanced color contrast |
| CN104390765A (en) * | 2014-12-02 | 2015-03-04 | 何伟 | Hand-held blue ray filter out detector and detection method |
| CN105241640A (en) * | 2015-11-24 | 2016-01-13 | 常州工学院 | Device for measuring blue light weighted radiation intensity and method thereof |
| CN205317347U (en) * | 2015-11-26 | 2016-06-15 | 浙江省质量检测科学研究院 | Blue light harm measuring device |
-
2016
- 2016-11-24 CN CN201611044722.2A patent/CN106768326B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140285996A1 (en) * | 2004-08-02 | 2014-09-25 | Ge Lighting Solutions Llc | White light apparatus with enhanced color contrast |
| CN101034006A (en) * | 2007-03-13 | 2007-09-12 | 郑晓明 | Method for improving measurement precision of photometry measuring instrument |
| CN102132200A (en) * | 2009-09-02 | 2011-07-20 | 光远科技股份有限公司 | Liquid crystal display with led backlight plate and attenuation rapid detection method thereof |
| CN103344417A (en) * | 2013-07-09 | 2013-10-09 | 余鸿铭 | Blue light tester |
| CN104390765A (en) * | 2014-12-02 | 2015-03-04 | 何伟 | Hand-held blue ray filter out detector and detection method |
| CN105241640A (en) * | 2015-11-24 | 2016-01-13 | 常州工学院 | Device for measuring blue light weighted radiation intensity and method thereof |
| CN205317347U (en) * | 2015-11-26 | 2016-06-15 | 浙江省质量检测科学研究院 | Blue light harm measuring device |
Non-Patent Citations (1)
| Title |
|---|
| 辛世成 等: "液晶蓝光危害研究", 《大学物理》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621309A (en) * | 2017-09-20 | 2018-01-23 | 南昌大学 | A kind of visualization appraisal procedure of light source blue light harm and non-vision effect |
| CN110389473A (en) * | 2018-04-17 | 2019-10-29 | 群创光电股份有限公司 | Show equipment and preparation method thereof |
| CN110389473B (en) * | 2018-04-17 | 2022-04-26 | 群创光电股份有限公司 | Display device and manufacturing method thereof |
| CN109459212A (en) * | 2018-11-07 | 2019-03-12 | 常州工学院 | A kind of LED life appraisal procedure based on blue light harm |
| CN110530804A (en) * | 2019-08-26 | 2019-12-03 | 松山湖材料实验室 | Optical detection light source design method and its light source |
| CN113739914A (en) * | 2021-09-02 | 2021-12-03 | 浙江阳光照明电器集团股份有限公司 | Simple method for distinguishing sunlight-like LEDs |
| CN113739914B (en) * | 2021-09-02 | 2024-05-10 | 浙江阳光照明电器集团股份有限公司 | Simple method for distinguishing sunlight-like LED |
| CN116183182A (en) * | 2023-04-23 | 2023-05-30 | 常州星宇车灯股份有限公司 | Detection system and detection method for automotive laser lamp |
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