CN106768326B - A kind of device and its detection method for being used to detect LED white light spectral qualities - Google Patents
A kind of device and its detection method for being used to detect LED white light spectral qualities Download PDFInfo
- Publication number
- CN106768326B CN106768326B CN201611044722.2A CN201611044722A CN106768326B CN 106768326 B CN106768326 B CN 106768326B CN 201611044722 A CN201611044722 A CN 201611044722A CN 106768326 B CN106768326 B CN 106768326B
- Authority
- CN
- China
- Prior art keywords
- light
- photodetector
- blue
- yellow
- signal processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003595 spectral effect Effects 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 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 7
- 230000001795 light effect Effects 0.000 claims 1
- 230000013011 mating Effects 0.000 claims 1
- 239000000843 powder Substances 0.000 description 14
- 230000006378 damage Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 238000005286 illumination Methods 0.000 description 7
- 239000004615 ingredient Substances 0.000 description 5
- 241001062009 Indigofera Species 0.000 description 3
- 241001465382 Physalis alkekengi Species 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- 206010038910 Retinitis Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 230000005786 degenerative changes Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Led Device Packages (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
A kind of device and its detection method for being used to detect LED white light spectral qualities, takes the first photodetector and the second photodetector to be respectively placed in and test it in detector spectral response test system in 450nm 470nm wave bands and the average response degree R of 570nm 590nm wave bands1And R2The photoelectric current I obtained under blue light action is detected by first photodetector1With the lower photoelectric current I obtained of the second photodetector detection yellow light 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 light blue light and yellow light ratio by obtaining light intensity ratio D, the light intensity ratio D that signal processing unit processes obtain passed to display unit.The present invention is cooperated by simple several components and formed, and simple in structure, cost is low, the data of detection required for being obtained by blue filter and yellow light optical filter and photoelectric sensor.
Description
Technical field
The present invention relates to a kind of white-light illuminating product spectral quality detection device, is used to detect LED more particularly, to one kind
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 become 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, which are encapsulated in, is mixed with yellow fluorescent powder
In resin, blue light GaN LED chips send blue light excitation yellow fluorescent powder and send yellow light, and blue light GaN LED chips send indigo plant
Light sends yellow light with yellow fluorescent powder and is mixed by a certain proportion of, realizes white light.It can be adjusted by the proportioning of fluorescent powder
Whole colour temperature.Almost all of White-light LED illumination product uses such a technology currently on the market.
With the development of LED lighting technology, and concern of the people for health problem, using the white light of above-mentioned technology
Blue light contamination problem in LED illumination product has been to be concerned by more and more people.Produced using the White-light LED illumination of above-mentioned technology
Product, some cause product blue light leakage problem serious since manufacturer is not tight to check on to quality.It is most important, due to LED core
Piece generates heat at work, causes the performance of fluorescent powder constantly to degenerate, thus cause blue light ingredient increase and yellow component compared with
It is few, lamps and lanterns are such as replaced not in time, blue light ratio can be caused to increase, and blue light leakage is serious, produces blue light harm.General LED illumination
The spectral detection of product relies primarily on integrating sphere and spectrometer 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 carries.At present, there are a kind of portable spectrum irradiatometer, volume in market
It is smaller, it can carry, but it is expensive, be not suitable for common application.
For numerous ordinarily residents, the main problem of care whether there is excessive blue light and reveal, and whether blue light ingredient is excessive
And certain harm is produced to people.Above instrument is usually more professional scientific research apparatus or professional detecting instrument, for general
Lead to civilian be not appropriate for.It is contemplated that a kind of simple, practicality of invention, the LED light spectrum mass detecting instrument that cost is low, small
Device, can fast, easily reflect the blue light leakage problem of LED white-light illuminating lamps and lanterns.
White light LEDs product in existing market, is virtually all to add yellow fluorescent powder to mix using blue light GaN LED chips
Light forms.For such a product, fluorescent powder 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, since chip generates heat, causes the performance of fluorescent powder constantly to decline, and incident is exactly blue in spectrum
Light component increases and yellow component is reduced.And these phenomenons for common user are had no idea by visually dividing
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 yellow light two
Example can judge LED white-light illuminating product spectral qualities, that is, may determine that whether LED white-light illuminatings product exists
Serious fluorescent powder is degenerated or product quality problems 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 being used to detect LED white light spectral qualities.
To solve the deficiency of above-mentioned technical problem, used technical solution is the present invention：
It is a kind of to be used to detecting the devices of LED white light spectral qualities, including stent, only transmit 450nm-470nm wave bands indigo plant
The blue filter of light and the yellow light optical filter for only transmitting 570nm-590nm wave band yellow lights, blue filter and yellow light optical filter
It is installed on stent, the first photodetector is provided with below blue filter, the second light is provided with below yellow light optical filter
Electric explorer, is additionally provided with signal processing unit and display unit, the first photodetector and the second photodetection on stent
The optical signal of device detection passes to signal processing unit, and signal processing unit exports the result after processing to display unit.
A kind of detection method using the device for detecting LED white light spectral qualities, includes 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；Pass through blue filter and yellow light optical filter
The spectrum for filtering LED white lights to be detected respectively obtains blue light and yellow light 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 it is directly proportional to intensity of illumination）With the lower photoelectric current I obtained of the second photodetector detection yellow light effect2；By
The data transfer that one photodetector and the second photodetector measure is to signal processing unit, and it is a to define photoelectric current ratio, detection
Device response intensity ratio is m, beam intensity ratio D, a=I1/I2, m=R1/R2, D=a/m, embodies LED light by obtaining light intensity ratio D
Blue light and yellow light ratio, display unit is passed to by the light intensity ratio D that signal processing unit processes obtain.
The beneficial effects of the invention are as follows：The present invention is cooperated by simple several components and formed, simple in structure, cost
It is low, the data of detection required for being obtained by blue filter and yellow light optical filter and photoelectric sensor, while pass through formula pair
Data carry out processing and obtain the blue light numerical value quantified, using blue light and yellow light in use because the change of fluorescent powder causes
Both direct contents mutual conversion so as to influence blue content change the reason for, it is only necessary to detect ratio between the two just
It can realize that blue content detects, obtain whether blue content increases, by by the ratio D of calculating and standard value D0Carry out pair
Than showing whether blue light meets standard, can LED white-light illuminatings product be continuing with.
Brief description of the drawings
Fig. 1 is the structural representation sketch of the present invention.
Fig. 2 is the spectral schematic of LED before fluorescent powder is degenerated.
Fig. 3 is the spectral schematic of LED after fluorescent powder is degenerated.
Diagram mark：101st, blue filter；102nd, yellow light optical filter；103rd, the first photodetector；104th, the second light
Electric explorer；105th, signal processing unit；106th, display unit.
Embodiment
Shown in figure, embodiment is as follows：
It is a kind of to be used to detecting the devices of LED white light spectral qualities, including stent, only transmit 450nm-470nm wave bands indigo plant
The blue filter 101 of light and the yellow light optical filter 102 for only transmitting 570nm-590nm wave band yellow lights, blue filter 101 and Huang
Light optical filter 102 is installed on stent, and the lower section of blue filter 101 is provided with the first photodetector 103, yellow light optical filter
102 lower sections are provided with the second photodetector 104, and signal processing unit 105 and display unit 106 are additionally provided with stent,
First photodetector 103 and the optical signal of the second photodetector 104 detection pass to signal processing unit, signal processing list
Member exports the result after processing to display unit.
A kind of detection method using the device for detecting LED white light spectral qualities, includes 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；Pass through blue filter and yellow light optical filter
The spectrum for filtering LED white lights to be detected respectively obtains blue light and yellow light 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 it is directly proportional to intensity of illumination）With the lower photoelectric current I obtained of the second photodetector detection yellow light effect2；By
The data transfer that one photodetector and the second photodetector measure is to signal processing unit, and it is a to define photoelectric current ratio, detection
Device response intensity ratio is m, beam intensity ratio D, a=I1/I2, m=R1/R2, D=a/m, embodies LED light by obtaining light intensity ratio D
Blue light and yellow light ratio, display unit is passed to by the light intensity ratio D that signal processing unit processes obtain.
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, D values are generally not more than 1.34, can be considered safe handling scope.
Wavelength caused photochemical effect, that is, retina blue light harm after the irradiation of 400~500 nm wave bands.
As many as play 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.It is but blue
The wave band of light is 450-470nm, it can be seen that the light being had an impact to human body is based on blue light, and LED LED in use
Chip generates heat at work, causes the performance of fluorescent powder constantly to degenerate, and increases and yellow component so as to cause blue light ingredient
It is less, lamps and lanterns are such as replaced not in time, blue light ratio can be caused to increase, and blue light leakage is serious, produces blue light harm.As attached drawing 2 is
Normal LED white-light illuminating product spectral schematics, Fig. 3 are fluorescent powder seriously degeneration LED white-light illuminatings product spectral schematic, because
This determines the spectral quality of LED white-light illuminating products by detecting the beam intensity ratio of blue light and yellow light.
Technical solution and embodiment cited by the present invention and non-limiting, with the technical solution cited by the present invention and
Embodiment is equivalent or effect same approach is all in the range of the present invention protects.
Claims (2)
- A kind of 1. device for being used to detect LED white light spectral qualities, it is characterised in that：Including stent, only transmit 450nm- The blue filter of 470nm wave band blue lights and the yellow light optical filter for only transmitting 570nm-590nm wave band yellow lights, blue filter and Yellow light optical filter is installed on stent, and the first photodetector is provided with below blue filter, is set below yellow light optical filter The second photodetector is equipped with, signal processing unit and display unit, the first photodetector and are additionally provided with stent The optical signal of two photodetectors detection passes to signal processing unit, and signal processing unit exports the result after processing to aobvious Show device unit.
- 2. a kind of detection method for being used to detect the device of LED white light spectral qualities using described in claim 1, its feature It is：Include the following steps：The first photodetector and the second photodetector is taken to be 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 yellow light optical filter filter LED white lights to be detected respectively obtains blue light and yellow light respectively, then passes through described The photoelectric current I obtained under one photodetector detection blue light action1With the lower acquisition of the second photodetector detection yellow light effect Photoelectric current I2；By the data transfer that the first photodetector and the second photodetector measure to signal processing unit, light is defined Electric current ratio is a, and explorer response intensity ratio is m, beam intensity ratio D, a=I1/I2, m=R1/R2, D=a/m, by obtaining beam intensity ratio Value D embodies LED light blue light and yellow light ratio, and the light intensity ratio D that signal processing unit processes obtain is passed to display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106768326A CN106768326A (en) | 2017-05-31 |
| CN106768326B true CN106768326B (en) | 2018-04-24 |
Family
ID=58975215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611044722.2A Expired - Fee Related 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106768326B (en) |
Families Citing this family (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 |
| US10725334B2 (en) * | 2018-04-17 | 2020-07-28 | Innolux Corporation | 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 |
| 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 |
| CN116183182B (en) * | 2023-04-23 | 2023-07-25 | 常州星宇车灯股份有限公司 | Detection system and detection method for automotive laser lamp |
Citations (6)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070241657A1 (en) * | 2004-08-02 | 2007-10-18 | Lumination, Llc | White light apparatus with enhanced color contrast |
-
2016
- 2016-11-24 CN CN201611044722.2A patent/CN106768326B/en not_active Expired - Fee Related
Patent Citations (6)
| 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 |
| 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 |
|---|
| 液晶蓝光危害研究;辛世成 等;《大学物理》;20151130;第34卷(第11期);第57-60页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106768326A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106768326B (en) | A kind of device and its detection method for being used to detect LED white light spectral qualities | |
| CN104000600B (en) | Percutaneous Photobiology detection device and Percutaneous Jaundice Instrumentation | |
| CN105158204B (en) | Adjustable light sources device for the detection of fruit internal quality visible and near infrared spectrum | |
| US9423296B2 (en) | Unit for determining the type of a dominating light source by means of two photodiodes | |
| CN105432152A (en) | An illumination controller | |
| CN103411676A (en) | Color measurement instrument for measuring object color by use of linear variable filter | |
| CN105784648A (en) | Photoluminescent diamond detection method and photoluminescent diamond detection device | |
| CN205317347U (en) | Blue light harm measuring device | |
| Chen et al. | Blue light blocking lenses measuring device | |
| CN106092995B (en) | A kind of indoor detection probe of fluorescent solutions concentration | |
| CN104897574B (en) | Integrated optical portable detector for agricultural and livestock products | |
| CN107303173B (en) | Method and device for detecting minimum erythema dose of individual | |
| CN102313598B (en) | Tester based on light splitting spectrum luminosity and night vision radiation intensity and test method thereof | |
| CN106092918A (en) | A kind of miniature UV, visible light/Infrared Non-destructive Testing spectrogrph | |
| CN108344505B (en) | Device for detecting luminous flux | |
| CN206739042U (en) | A kind of LED light source device for visible and near infrared spectrum detection | |
| CN105628197A (en) | Illumination photometer | |
| CN207317934U (en) | A kind of blue light detecting system | |
| CN105548033A (en) | Quantum dot embedded spectrograph | |
| Liu et al. | Study on methodology of LED's luminous flux measurement with integrating sphere | |
| CN202267535U (en) | Color detector optical head based on LED light source | |
| WO2021230221A1 (en) | Light emitting device and electronic apparatus using same | |
| CN107796771A (en) | Absorb device and measuring method that alanysis instrument eliminates external stray light interference | |
| CN113739914B (en) | Simple method for distinguishing sunlight-like LED | |
| CN106872362A (en) | LED light source device and its application for visible and near infrared spectrum detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 450000 Middle Road, 27 District University, Zhengzhou, Henan Province, No. 2 Patentee after: Zhengzhou Institute of Aeronautical Industry Management Address before: 450046 No. 15, Wen Yuan Xi Road, Zheng Dong New District, Zhengzhou, Zhengzhou, Henan, Henan Patentee before: Zhengzhou Institute of Aeronautical Industry Management |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180424 Termination date: 20181124 |