CN102401919A - Doping filer reducing blue light harm of LED (light-emitting diode) - Google Patents
Doping filer reducing blue light harm of LED (light-emitting diode) Download PDFInfo
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- CN102401919A CN102401919A CN201110193264XA CN201110193264A CN102401919A CN 102401919 A CN102401919 A CN 102401919A CN 201110193264X A CN201110193264X A CN 201110193264XA CN 201110193264 A CN201110193264 A CN 201110193264A CN 102401919 A CN102401919 A CN 102401919A
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Abstract
The invention discloses a doping filer reducing blue light harm of an LED (light-emitting diode). The doping filer reducing the blue light harm of the LED comprises a substrate and a light-absorbing material, wherein the light-absorbing material is doped in the substrate; the light-absorbing material comprises rare earth oxide; and the absorption wavelength of the light-absorbing material is 440 nm to 480 nm. Due to the adoption of the method, the doping filer reducing the blue light harm of the LED can reduce the content of the blue spectrum in the white light spectrum so as to reduce the harmful light spectrum section affecting health of people and other creatures.
Description
Technical field
The present invention relates to the illumination optical technical field, particularly relate to a kind of doping optical filter that is used to reduce the harm of LED (light emitting diode) blue light.
Background technology
New LED (light emitting diodes, light emitting diode) lighting source replaces the development trend that conventional lighting source has much becomes the illumination of the main flow world just gradually with its energy-saving and environmental protection, durable characteristics.Along with the expansion of LED industry, application extensively, LED begins to receive publicity to the influence of human body.Although the LED lighting engineering has clear superiority aspect energy-conservation and the efficient illumination; But simultaneously, led light source is also pointing out us to want the risk of acutely aware LED illumination to the human-body biological secure context to amphiblestroid harm and to the influence of the biological daily life rhythm and pace of moving things.Present most White LED only excites the very high curve of spectrum with natural light or incandescent lamp of unsmooth particularly 440 nanometers of its curve of spectrum of white light that produces behind the yellow fluorescent powder ~ 480 nano spectral peak values to differ greatly by blue-ray LED.
Along with the fast development of photobiology research, the photo bio safety of LED caused the concern of international community day by day in recent years.Since 2002; Relevant human the third non-visual light receiver (cell), optical radiation provide effective analysis tool and evidence to the progress of the fundamental researchs such as influence of circadian rhythm and internal system for it is found that and study the potential hazard that artificial light source occurs in application process.Melanopsin is the sensitization opsin that a kind of retinal ganglial cells is expressed; It is mammal the third light sensitivity cell outside the cone and the rod cell that continues; Its function is the non-visual imaging of a participation system, participates in the activity of regulation and control biological rhythm, pupillary light reflex.Existing research shows; Melanopsin experiences the surrounding environment light radiant illumination; Relatively with more responsive to 440 nanometers ~ 480 nanometer spectral coverages in three kinds of photopigments, this light stimulus is very important to the biological rhythm regulation mechanism of body to this sensitization albumen.There is the multiple tissue that can experience the variation of light rhythmicity in non-lactation vertebrate, like pineal body and surrounding tissue, dermal melanin cell etc.Mammal only has the melanopsin/pRGC system can experience the variation of the light rhythm and pace of moving things, has experimental result to find that melanopsin is big 3 times than the regulating action of cone cell to the regulating action of pupillary light reflex.Above-mentioned research shows that human biological rhythm's adjusting might receive the LED optical radiation and influence greatly, and nonstandard LED illumination possibly extensively produce insomnia in the crowd, dizzy, headache, and nervous function such as the disturbances of emotion etc. widely are unusual.
At present, various light fixtures have proposed various evolutionary approach aspect light source, but reckon without near-sighted object and are exposed to the people's kopiopia under the non-natural light for a long time, at all being of attempting to address this problem make the LED curve of spectrum as much as possible with natural light near.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of doping optical filter of the LED of minimizing blue light harm, can reduce white-light spectrum Smalt spectral content through simple mode, reduces people and biological healthy influential unfavorable spectrum segment.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: the doping optical filter that a kind of LED of minimizing blue light harm is provided; The doping optical filter of said minimizing LED blue light harm comprises matrix and light absorbent; Said light absorbent is doped in the said matrix, and said light absorbent comprises rare earth oxide, and the absorbing wavelength of said light absorbent comprises 440 nanometers ~ 480 nanometers.
In preferred embodiment of the present invention, said rare earth oxide is a holimium oxide.
In preferred embodiment of the present invention, said rare earth oxide is the potpourri of praseodymium oxide and neodymium oxide.
In preferred embodiment of the present invention, said matrix is the clear glass matrix.
In preferred embodiment of the present invention, said matrix is the transparent resin matrix.
The present invention also provides a kind of led light source, and said led light source comprises LED luminescence unit and the doping optical filter that reduces the harm of LED blue light, and the doping optical filter of said minimizing LED blue light harm is arranged on light emission direction the place ahead of said LED luminescence unit.The doping optical filter of said minimizing LED blue light harm comprises matrix and light absorbent, and said light absorbent is doped in the said matrix, and said light absorbent comprises rare earth oxide, and the absorbing wavelength of said light absorbent comprises 440 nanometers ~ 480 nanometers.
The invention has the beneficial effects as follows: the present invention reduces light absorbent in the doping optical filter of LED blue light harm through absorbing the quantitative wavelength in the LED luminescence unit spectrum; Readjust spectral content of all kinds in the LED luminescence unit; Reduce spectrum medium blue coloured light spectral content; Effectively protection people and other are biological healthy, make the people can visual fatigue under non-natural light.
Description of drawings
Fig. 1 is the institutional framework synoptic diagram that the present invention reduces the doping optical filter of LED blue light harm;
Fig. 2 is the LED luminescence unit position view that the present invention reduces the doping optical filter of LED blue light harm;
Fig. 3 is the spectral intensity correlation curve of led light source of the present invention and original visible light.
The mark of each parts is following in the accompanying drawing: 1, matrix; 2, absorbing material; 3, LED luminescence unit.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1; The embodiment of the invention comprises: a kind of doping optical filter that reduces the harm of LED blue light; Comprise matrix 1 and light absorbent 2; Light absorbent 2 is doped in the said matrix 1, and said light absorbent 2 comprises rare earth oxide, and the absorbing wavelength of said light absorbent 2 comprises 440 nanometers ~ 480 nanometers.Said light absorbent 2 can evenly be doped in the matrix 1, also can said light absorbent 2 can be doped in the matrix 1 at random according to product demand.
Further, said rare earth oxide is a holimium oxide, perhaps is the potpourri of praseodymium oxide and neodymium oxide.Matrix 1 is clear glass matrix or transparent resin matrix.
See also 2; The present invention also provides a kind of led light source; Said led light source comprises the doping optical filter 1 and LED luminescence unit 3 that reduces the harm of LED blue light, and the doping optical filter 1 of said minimizing LED blue light harm is arranged on light emission direction the place ahead of said LED luminescence unit 3.
To reduce the outward appearance of matrix 1 of the doping optical filter of LED blue light harm can be the glass case of thin slice plane formula, LED spheric bulb lamp or the LED particle that adopts glass-encapsulated in the present invention in addition.
See also Fig. 3, Fig. 3 is spectral intensity contrast synoptic diagram.Wherein, The longitudinal axis is represented radiation intensity (μ w/cm2), and transverse axis is represented wavelength (nanometer), and fine rule is the original LED curve of spectrum; Thick line is the LED curve of spectrum that is provided with behind the doping optical filter that the present invention reduces LED blue light harm; Compare with original LED luminescence unit, the doping optical filter that the present invention reduces the harm of LED blue light absorbs half width less than 100 nanometers, and the doping optical filter that the present invention reduces the harm of LED blue light is the spectrum segment medium blue coloured light of 440 nanometers ~ 480 nanometers in absorbing wavelength; Readjust spectral content of all kinds in the LED luminescence unit, reduce spectrum medium blue coloured light spectrum ratio.
The doping optical filter that the present invention reduces LED blue light harm is different from prior art: the present invention reduces absorbing material 2 in the doping optical filter matrix 1 of LED blue light harm through LED luminescence unit 3; Break white balance for a led light source provided by the invention and reduce spectrum medium blue coloured light spectrum; Relatively more flexible in utilization; Power drives is had no requirement, only its optical filter need be set on the structural design of light fixture, optical filter can be one or more pieces.Optical filter is placed in the light fixture of illumination and special lighting class in addition, and the light source of lamp can reduce spectrum medium blue coloured light spectrum through its optical filter.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (7)
1. one kind is reduced the doping optical filter that the LED blue light endangers; It is characterized in that; The doping optical filter of said minimizing LED blue light harm comprises matrix and light absorbent; Said light absorbent is doped in the said matrix, and said light absorbent comprises rare earth oxide, and the absorbing wavelength of said light absorbent comprises 440 nanometers ~ 480 nanometers.
2. the doping optical filter of minimizing LED blue light according to claim 1 harm is characterized in that said rare earth oxide is a holimium oxide.
3. the doping optical filter of minimizing LED blue light according to claim 1 harm is characterized in that said rare earth oxide is the potpourri of praseodymium oxide and neodymium oxide.
4. the doping optical filter of minimizing LED blue light according to claim 1 harm is characterized in that said matrix is the clear glass matrix.
5. the doping optical filter of minimizing LED blue light according to claim 1 harm is characterized in that said matrix is the transparent resin matrix.
6. a led light source is characterized in that, comprises the doping optical filter of any described minimizing LED blue light of claim 1 to 6 harm.
7. led light source according to claim 6 is characterized in that, further comprises a LED luminescence unit, and the doping optical filter of said minimizing LED blue light harm is arranged on light emission direction the place ahead of said LED luminescence unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110193264XA CN102401919A (en) | 2011-07-12 | 2011-07-12 | Doping filer reducing blue light harm of LED (light-emitting diode) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110193264XA CN102401919A (en) | 2011-07-12 | 2011-07-12 | Doping filer reducing blue light harm of LED (light-emitting diode) |
Publications (1)
| Publication Number | Publication Date |
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| CN102401919A true CN102401919A (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110193264XA Pending CN102401919A (en) | 2011-07-12 | 2011-07-12 | Doping filer reducing blue light harm of LED (light-emitting diode) |
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| CN (1) | CN102401919A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793396A (en) * | 2015-05-07 | 2015-07-22 | 武汉华星光电技术有限公司 | Color filter, preparation method thereof and liquid crystal display |
| CN105116587A (en) * | 2015-09-22 | 2015-12-02 | 武汉华星光电技术有限公司 | Liquid crystal display panel and manufacturing method thereof |
| WO2016054764A1 (en) * | 2014-10-08 | 2016-04-14 | GE Lighting Solutions, LLC | Materials and optical components for color filtering in lighting apparatus |
| CN106189166A (en) * | 2016-07-20 | 2016-12-07 | 王玲 | A kind of LED and preparation method thereof |
| CN106644063A (en) * | 2017-02-16 | 2017-05-10 | 南京第壹有机光电有限公司 | Portable rapid blue light harm detector |
| CN109946777A (en) * | 2017-12-20 | 2019-06-28 | 张家港康得新光电材料有限公司 | Optical filter, preparation method and the imaging device with it |
| CN114560631A (en) * | 2021-11-09 | 2022-05-31 | 河北视窗玻璃有限公司 | Blue-light-proof cover plate glass and preparation method and application thereof |
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| WO2007017049A1 (en) * | 2005-08-11 | 2007-02-15 | Merck Patent Gmbh | Photonic material with regularly arranged cavities |
| CN101004463A (en) * | 2006-01-20 | 2007-07-25 | 义平有限公司 | Lens for enhancing color contrast |
| WO2009083867A1 (en) * | 2007-12-20 | 2009-07-09 | Philips Intellectual Property & Standards Gmbh | Color filter for a light emitting device |
| CN101813296A (en) * | 2009-05-15 | 2010-08-25 | 李欣洋 | LED light source using filter with dual-function of stopping ultraviolet rays and infrared rays |
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| CN1535393A (en) * | 2001-05-24 | 2004-10-06 | 丹尼尔・内森・卡彭 | Neodymium oxide doped vehicle windshield, safety glazing material and window glass |
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| CN101004463A (en) * | 2006-01-20 | 2007-07-25 | 义平有限公司 | Lens for enhancing color contrast |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10861690B2 (en) | 2014-10-07 | 2020-12-08 | Consumer Lighting (U.S.), Llc | LED apparatus employing neodymium-fluorine materials |
| US10663143B2 (en) | 2014-10-08 | 2020-05-26 | Consumer Lighting (U.S.), Llc | Materials and optical components for color filtering in a lighting apparatus |
| WO2016054764A1 (en) * | 2014-10-08 | 2016-04-14 | GE Lighting Solutions, LLC | Materials and optical components for color filtering in lighting apparatus |
| WO2016176930A1 (en) * | 2015-05-07 | 2016-11-10 | 武汉华星光电技术有限公司 | Color filter, manufacturing method therefor, and liquid crystal display device |
| CN104793396B (en) * | 2015-05-07 | 2018-01-16 | 武汉华星光电技术有限公司 | Colored filter and preparation method thereof, and liquid crystal display |
| CN104793396A (en) * | 2015-05-07 | 2015-07-22 | 武汉华星光电技术有限公司 | Color filter, preparation method thereof and liquid crystal display |
| CN105116587A (en) * | 2015-09-22 | 2015-12-02 | 武汉华星光电技术有限公司 | Liquid crystal display panel and manufacturing method thereof |
| CN106189166A (en) * | 2016-07-20 | 2016-12-07 | 王玲 | A kind of LED and preparation method thereof |
| CN106189166B (en) * | 2016-07-20 | 2018-03-27 | 王玲 | A kind of LED and preparation method thereof |
| CN106644063A (en) * | 2017-02-16 | 2017-05-10 | 南京第壹有机光电有限公司 | Portable rapid blue light harm detector |
| CN109946777A (en) * | 2017-12-20 | 2019-06-28 | 张家港康得新光电材料有限公司 | Optical filter, preparation method and the imaging device with it |
| CN114560631A (en) * | 2021-11-09 | 2022-05-31 | 河北视窗玻璃有限公司 | Blue-light-proof cover plate glass and preparation method and application thereof |
| CN114560631B (en) * | 2021-11-09 | 2024-02-13 | 河北视窗玻璃有限公司 | Blue light-proof cover plate glass and preparation method and application thereof |
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Application publication date: 20120404 |