CN102393544B - LED (Light-Emitting Diode) doped optical filter - Google Patents
LED (Light-Emitting Diode) doped optical filter Download PDFInfo
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- CN102393544B CN102393544B CN 201110193239 CN201110193239A CN102393544B CN 102393544 B CN102393544 B CN 102393544B CN 201110193239 CN201110193239 CN 201110193239 CN 201110193239 A CN201110193239 A CN 201110193239A CN 102393544 B CN102393544 B CN 102393544B
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Abstract
The invention discloses an LED (Light-Emitting Diode) doped optical filter, which comprises a first substrate, a second substrate, a first light absorbing material and a second light absorbing material, wherein the first light absorbing material is doped in the first substrate; the second light absorbing material is doped in the second substrate; both the first light absorbing material and the second light absorbing material comprise rare-earth oxides; the absorbing wavelength of the first light absorbing material is 570-600 nanometers; and the absorbing wavelength of the second light absorbing material is 440-480 nanometers. Due to the adoption of the LED doped optical filter, the spectral content of two segments of different wavelengths in a white light spectrum can be readjusted, the color rendering of an LED is enhanced, and unbeneficial spectrum bands which influence the health of human beings and organisms are reduced.
Description
Technical field
The present invention relates to the illumination optical technical field, particularly relate to a kind of LED(light emitting diode that is used to improve) colour rendering, reduce the doping optical filter that blue light endangers.
Background technology
New LED (light emitting diodes, light emitting diode) lighting source replaces conventional lighting source just gradually with its energy-saving and environmental protection, durable characteristics, becomes main flow world lighting field.Although the LED lighting engineering has clear superiority aspect energy-conservation and the efficient illumination, simultaneously the colour rendering difference of led light source easily causes anomalous trichromatism, and can not reduce has the ultraviolet ray and the blue light spectral coverage of different proportion in the spectrum of true colors and LED.These are all influencing our the daily life rhythm and pace of moving things, and also we want the risk of acutely aware LED illumination to the human-body biological secure context in prompting simultaneously.
At present, poor at the narrow colour rendering of LED illumination spectrum, have for improving the measure that colour rendering takes: the one, the white light that produces behind the blue-light excited yellow fluorescent powder of LED and the ruddiness of miniwatt red-light LED mix and promote colour rendering; The 2nd, control by the composition that changes fluorescent powder; The 3rd, RGB three primary colours chip hybrid becomes white light.Above-mentioned scheme has only solved the raising colour rendering, and the ultraviolet ray and the blue light spectral coverage of different proportion are arranged in the spectrum at LED, and wherein visible light blue light part can produce damage and unresolved to layer of retina,pigmentary.
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 continue the third light sensitivity cell outside the cone and the rod cell of mammal, 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 studies show that, Melanopsin experiences the surrounding environment light radiant illumination, this sensitization albumen is relatively with more responsive to 440 nanometers ~ 480 nanometer spectral coverages in three kinds of photopigments, and this light stimulus is very important to the biological rhythm regulation mechanism of body.There is the multiple tissue that can experience the variation of light rhythmicity in non-lactation vertebrate, as 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.There is 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.The above-mentioned human biological rhythm's of studies show that adjusting might be subjected to the LED optical radiation to be influenced greatly, and nonstandard LED illumination may extensively produce insomnia in the crowd, dizzy, headache, and nervous function such as the disturbances of emotion etc. widely are unusual.
In sum, solve the raising colour rendering simultaneously and endanger this two problems with the minimizing blue light, may need to greatest extent spectrum segment to be changed or improves, with respect to the color wavelength in the colour purity standard, each harmful emission wavelength all reduces as far as possible, and need solve complicated technology from the angle of considering cost.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of LED doping optical filter, the spectral content of can a kind of simple mode readjusting two sections different wave lengths in the white-light spectrum, when improving colour rendering, reduce 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: a kind of LED doping optical filter is provided, described LED doping optical filter comprises first matrix, second matrix, first light absorbent and second light absorbent, described first light absorbent is doped in described first matrix, described second light absorbent is doped in described second matrix, described first light absorbent and described second light absorbent all comprise rare earth oxide, the absorbing wavelength of described first light absorbent comprises 570 nanometers ~ 600 nanometers, and the absorbing wavelength of described second light absorbent comprises 440 nanometers ~ 480 nanometers.
In a preferred embodiment of the present invention, the rare earth oxide that described first light absorbent comprises is a neodymium oxide.
In a preferred embodiment of the present invention, the rare earth oxide that described second light absorbent comprises is a holimium oxide.
In a preferred embodiment of the present invention, the rare earth oxide that described second light absorbent comprises is the potpourri of praseodymium oxide and neodymium oxide.
In a preferred embodiment of the present invention, described matrix is clear glass matrix or transparent resin matrix.
In a preferred embodiment of the present invention, described first matrix and the overlapping setting of described second matrix.
The present invention also provides a kind of led light source, and described led light source comprises LED luminescence unit and LED doping optical filter, and described LED doping optical filter is arranged on light emission direction the place ahead of described LED luminescence unit.Described LED doping optical filter comprises first matrix, second matrix, first light absorbent and second light absorbent, described first light absorbent is doped in described first matrix, described second light absorbent is doped in described second matrix, described first light absorbent and described second light absorbent all comprise rare earth oxide, the absorbing wavelength of described first light absorbent comprises 570 nanometers ~ 600 nanometers, and the absorbing wavelength of described second light absorbent comprises 440 nanometers ~ 480 nanometers.
The invention has the beneficial effects as follows: LED doping optical filter of the present invention absorbs two sections different wavelength in the LED luminescence unit spectrum simultaneously; readjust spectral content of all kinds in the LED luminescence unit; when improving the LED colour rendering; reduce spectrum medium blue coloured light spectrum; effectively protection people and other biology are healthy, and the light source that the LED luminescence unit is sent more approaches natural light.
Description of drawings
Fig. 1 is the institutional framework synoptic diagram of LED doping optical filter of the present invention;
Fig. 2 is the LED luminescence unit position view of LED doping optical filter of the present invention.
The mark of each parts is as follows in the accompanying drawing: 1, first matrix; 2, second matrix; 3, LED luminescence unit; 11, first absorbing material; 21, second absorbing material.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.
See also Fig. 1, the embodiment of the invention comprises: a kind of LED doping optical filter, comprise first matrix 1, second matrix 2, first light absorbent 11 and second light absorbent 21, first light absorbent 11 is doped in first matrix 1, second light absorbent 21 is doped in second matrix 2, first light absorbent 11 and second light absorbent 21 all comprise rare earth oxide, the absorbing wavelength of first light absorbent 11 comprises 570 nanometers ~ 600 nanometers, and the absorbing wavelength of second light absorbent 21 comprises 440 nanometers ~ 480 nanometers.First light absorbent 11 can evenly be doped in first matrix 1, second light absorbent 21 can evenly be doped in second matrix 2, also can be according to product demand, described first light absorbent 11 can be doped at random 1, the second light absorbent 21 can be doped in second matrix 2 at random in first matrix.
Further, the rare earth oxide that first light absorbent 11 comprises is a neodymium oxide, and the rare earth oxide that second light absorbent 21 comprises is a holimium oxide, perhaps is the potpourri of praseodymium oxide and neodymium oxide.First matrix 1 and second matrix 2 are clear glass matrix or transparent resin matrix, and first matrix 1 and second basic 2 bodies can random overlapping settings.
See also Fig. 2, the present invention also provides a kind of led light source, and described led light source comprises LED doping optical filter and LED luminescence unit 3, and first matrix 1 of LED doping optical filter of the present invention and second base 2 are arranged on light emission direction the place ahead of described LED luminescence unit 3.
The outward appearance of LED doping optical filter first matrix 1 of the present invention and second base 2 can be the glass case of thin slice plane formula, LED spheric bulb lamp or the LED particle of employing glass-encapsulated.
LED doping optical filter of the present invention is different from prior art: first matrix 1 in the LED doping optical filter of the present invention and the absorbing material in second matrix 2 are by LED luminescence unit 3, for a led light source provided by the invention approaches natural light, have soft property, reduced true colors.Relatively flexibly, power drives is had no requirement in utilization, 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 also can improve colour rendering and reduce blue color spectrum content by its optical filter.
The above only is 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 (8)
1. LED doping optical filter, it is characterized in that, described LED doping optical filter comprises first matrix, second matrix, first light absorbent and second light absorbent, described first light absorbent is doped in described first matrix, described second light absorbent is doped in described second matrix, described first light absorbent and described second light absorbent all comprise rare earth oxide, the absorbing wavelength of described first light absorbent comprises 570 nanometers ~ 600 nanometers, the absorbing wavelength of described second light absorbent comprises 440 nanometers ~ 480 nanometers, readjust spectral content of all kinds in the led light source, improve the colour rendering of led light source.
2. LED doping optical filter according to claim 1 is characterized in that the rare earth oxide that described first light absorbent comprises is a neodymium oxide.
3. LED doping optical filter according to claim 1 is characterized in that the rare earth oxide that described second light absorbent comprises is a holimium oxide.
4. LED doping optical filter according to claim 1 is characterized in that the rare earth oxide that described second light absorbent comprises is the potpourri of praseodymium oxide and neodymium oxide.
5. LED doping optical filter according to claim 1 is characterized in that, described matrix is clear glass matrix or transparent resin matrix.
6. LED doping optical filter according to claim 1 is characterized in that, described first matrix and the overlapping setting of described second matrix.
7. a led light source is characterized in that, comprises any described LED doping optical filter of claim 1 to 6.
8. led light source according to claim 7 is characterized in that, further comprises a LED luminescence unit, and described LED doping optical filter is arranged on light emission direction the place ahead of described LED luminescence unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110193239 CN102393544B (en) | 2011-07-12 | 2011-07-12 | LED (Light-Emitting Diode) doped optical filter |
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| CN 201110193239 CN102393544B (en) | 2011-07-12 | 2011-07-12 | LED (Light-Emitting Diode) doped optical filter |
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| CN102393544A CN102393544A (en) | 2012-03-28 |
| CN102393544B true CN102393544B (en) | 2013-07-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104676493A (en) * | 2015-03-04 | 2015-06-03 | 晶科电子（广州）有限公司 | Wide-color-gamut optical diaphragm, preparation method thereof and LED (Light Emitting Diode) backlight module |
| CN106287337B (en) * | 2016-09-27 | 2019-01-15 | 深圳市爱图仕影像器材有限公司 | A kind of lighting device improving white light LEDs colour developing quality |
| US11307408B2 (en) | 2019-10-08 | 2022-04-19 | Magic Leap, Inc. | Color-selective waveguides for augmented reality/mixed reality applications |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101004463A (en) * | 2006-01-20 | 2007-07-25 | 义平有限公司 | Lens for enhancing color contrast |
| CN101441165A (en) * | 2007-05-30 | 2009-05-27 | 霍夫曼-拉罗奇有限公司 | Method for wavelength calibration of spectrometer |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101004463A (en) * | 2006-01-20 | 2007-07-25 | 义平有限公司 | Lens for enhancing color contrast |
| CN101441165A (en) * | 2007-05-30 | 2009-05-27 | 霍夫曼-拉罗奇有限公司 | Method for wavelength calibration of spectrometer |
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Effective date of registration: 20190211 Address after: Room 425, 4th floor, 272 Dongping Street, Suzhou Industrial Park, Jiangsu Province Patentee after: Suzhou Ying Xin home Technology Co., Ltd. Address before: 215001 No. 2 Taishan Road, Suzhou High-tech Zone, Suzhou City, Jiangsu Province (in Boji Science and Technology Park) Patentee before: Suzhou Kunlun Industry Design Co., Ltd. |
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Address after: 215000 a-313, 68 Xiangyang Road, high tech Zone, Suzhou City, Jiangsu Province Patentee after: SUZHOU YINGXIN HOME TECHNOLOGY Co.,Ltd. Address before: Room 425, 4th floor, 272 Dongping Street, Suzhou Industrial Park, Jiangsu Province Patentee before: SUZHOU YINGXIN HOME TECHNOLOGY Co.,Ltd. |