CN102401918A - LED film-coated optical filter - Google Patents
LED film-coated optical filter Download PDFInfo
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- CN102401918A CN102401918A CN2011101932387A CN201110193238A CN102401918A CN 102401918 A CN102401918 A CN 102401918A CN 2011101932387 A CN2011101932387 A CN 2011101932387A CN 201110193238 A CN201110193238 A CN 201110193238A CN 102401918 A CN102401918 A CN 102401918A
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Abstract
The invention discloses an LED coated optical filter which comprises a base body, a first light absorption coated layer and a second light absorption coated layer which are arranged in an overlapped mode, wherein the first light absorption coated layer and the second light absorption coated layer both comprise rare earth oxides, the absorption wavelength of the first light absorption coated layer comprises 570-600 nanometers, and the absorption wavelength of the second light absorption coated layer comprises 440-480 nanometers. Through the mode, the LED coated filter can readjust the spectral content of two sections of different wavelengths in a white light spectrum, and reduces adverse spectral sections affecting human and biological health while improving the color rendering of an LED.
Description
Technical field
The present invention relates to the illumination optical technical field, particularly relate to a kind of LED (light emitting diode) colour rendering that is used to improve, reduce the plated film optical filter of blue light harm.
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 is prone to cause 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 to 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 through 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 to ultraviolet ray and blue light spectral coverage that different proportion is arranged in the spectrum of LED, 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 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.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.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.
In sum; Solve simultaneously and improve colour rendering and reduce these two problems of blue light harm; Possibly 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 plated film optical filter; The enough a kind of simple modes of ability are readjusted the spectral content of 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 plated film optical filter is provided; Said LED plated film optical filter comprises matrix, the first extinction coatings and the second extinction coatings of overlapping setting; Said first extinction coatings and the said second extinction coatings all comprise rare earth oxide, and the absorbing wavelength of the said first extinction coatings comprises 570 nanometers ~ 600 nanometers, and the absorbing wavelength of the said second extinction coatings comprises 440 nanometers ~ 480 nanometers.
In preferred embodiment of the present invention, the rare earth oxide that the said first extinction coatings comprises is a neodymium oxide.
In preferred embodiment of the present invention, the rare earth oxide that the said second extinction coatings comprises is a holimium oxide.
In preferred embodiment of the present invention, the rare earth oxide that the said second extinction coatings comprises is the potpourri of praseodymium oxide and neodymium oxide.
In preferred embodiment of the present invention, said matrix is clear glass matrix or transparent resin matrix.
In preferred embodiment of the present invention, said first extinction coatings and the said second extinction coatings are separately positioned on the relative both sides of said matrix.
In preferred embodiment of the present invention, said first extinction coatings and the said second extinction coatings all are arranged on the same side of said matrix.
The present invention also provides a kind of led light source, and said led light source comprises LED luminescence unit and LED plated film optical filter, and said LED plated film optical filter is arranged on light emission direction the place ahead of said LED luminescence unit.Said LED plated film optical filter comprises matrix, the first extinction coatings and the second extinction coatings of overlapping setting; Said first extinction coatings and the said second extinction coatings all comprise rare earth oxide; The absorbing wavelength of the said first extinction coatings comprises 570 nanometers ~ 600 nanometers, and the absorbing wavelength of the said second extinction coatings comprises 440 nanometers ~ 480 nanometers.
The invention has the beneficial effects as follows: LED plated film optical filter of the present invention absorbs two sections different wavelengths 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 protect people and other biological health, 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 plated film optical filter of the present invention;
Fig. 2 is another institutional framework synoptic diagram of LED plated film optical filter of the present invention;
Fig. 3 is the LED luminescence unit position view of LED plated film optical filter of the present invention;
Fig. 4 is the spectral intensity correlation curve figure 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, the first extinction coatings; 3, the second extinction coatings; 4, 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 LED plated film optical filter; The matrix 1, the first extinction coatings 2 and the second extinction coatings 3 that comprise overlapping setting; The said first extinction coatings 2 all comprises rare earth oxide with the said second extinction coatings 3, and the absorbing wavelength of the said first extinction coatings 2 comprises 570 nanometers ~ 600 nanometers, and the absorbing wavelength of the said second extinction coatings 3 comprises 440 nanometers ~ 480 nanometers.
Further, the rare earth oxide that the said first extinction coatings 2 comprises is a neodymium oxide, and the rare earth oxide that the second extinction plated film 3 comprises is a holimium oxide, perhaps is the potpourri of praseodymium oxide and neodymium oxide.The Coating Materials on matrix 1 surface is high-purity neodymium and neodymium target, or is high-purity holmium and holmium target.Matrix 1 is clear glass matrix or transparent resin matrix.The first extinction coatings 2 and the said second extinction coatings 3 are separately positioned on the relative both sides of matrix 1.
See also Fig. 2, the first extinction coatings 2 and the second extinction coatings 3 are arranged on the same side of matrix 1.
See also Fig. 3, the LED luminescence unit 4 that LED plated film optical filter of the present invention appears, the matrix 1 of LED plated film optical filter is arranged on light emission direction the place ahead of said LED luminescence unit 4.
The outward appearance of the matrix 1 of LED plated film optical filter of the present invention can be the glass case of thin slice plane formula, LED spheric bulb lamp or the LED particle of employing glass-encapsulated.
See also Fig. 4, Fig. 4 is spectral radiance curve contrast synoptic diagram.Wherein, the longitudinal axis is represented radiation intensity (μ w/cm2), and transverse axis is represented wavelength (nanometer); Fine rule is the original LED curve of spectrum, and thick line is the LED curve of spectrum that is provided with behind the LED plated film optical filter of the present invention, compares with original LED luminescence unit; LED plated film optical filter of the present invention absorbs half width less than 100 nanometers; The absorbing wavelength of the first extinction coatings in the LED property optical filter of the present invention is 570 nanometers ~ 600 nanometers, and the absorbing wavelength of the second extinction coatings is 440 nanometers ~ 480 nanometers, thereby readjusts spectral content of all kinds in the LED luminescence unit; When improving demonstration property, reduce spectrum medium blue coloured light spectrum ratio.
LED plated film optical filter of the present invention is different from prior art: first extinction coatings 2 in the LED plated film optical filter of the present invention and the absorbing material in the second extinction coatings 3 are through LED luminescence unit 4; A led light source that improves for the present invention approaches natural light; Have soft property, reduced true colors.In utilization, relatively flexibly, 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 also can improve colour rendering and reduce blue color spectrum content 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 (9)
1. LED plated film optical filter; It is characterized in that; Said LED plated film optical filter comprises matrix, the first extinction coatings and the second extinction coatings of overlapping setting; Said first extinction coatings and the said second extinction coatings all comprise rare earth oxide, and the absorbing wavelength of the said first extinction coatings comprises 570 nanometers ~ 600 nanometers, and the absorbing wavelength of the said second extinction coatings comprises 440 nanometers ~ 480 nanometers.
2. LED plated film optical filter according to claim 1 is characterized in that, the rare earth oxide that the said first extinction coatings comprises is a neodymium oxide.
3. LED plated film optical filter according to claim 1 is characterized in that, the rare earth oxide that the said second extinction coatings comprises is a holimium oxide.
4. LED plated film optical filter according to claim 1 is characterized in that, the rare earth oxide that the said second extinction coatings comprises is the potpourri of praseodymium oxide and neodymium oxide.
5. LED plated film optical filter according to claim 1 is characterized in that, said matrix is clear glass matrix or transparent resin matrix.
6. LED plated film optical filter according to claim 1 is characterized in that, said first extinction coatings and the said second extinction coatings are separately positioned on the relative both sides of said matrix.
7. LED plated film optical filter according to claim 1 is characterized in that, said first extinction coatings and the said second extinction coatings all are arranged on the same side of said matrix.
8. a led light source is characterized in that, comprises any described LED plated film optical filter of claim 1 to 7.
9. led light source according to claim 8 is characterized in that, further comprises a LED luminescence unit, and said LED plated film optical filter is arranged on light emission direction the place ahead of said LED luminescence unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101932387A CN102401918B (en) | 2011-07-12 | 2011-07-12 | LED coated filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101932387A CN102401918B (en) | 2011-07-12 | 2011-07-12 | LED coated filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102401918A true CN102401918A (en) | 2012-04-04 |
| CN102401918B CN102401918B (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101932387A Expired - Fee Related CN102401918B (en) | 2011-07-12 | 2011-07-12 | LED coated filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102401918B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181626A (en) * | 2014-08-29 | 2014-12-03 | 上海和辉光电有限公司 | Polaroid, manufacturing method of polaroid and displayer comprising polaroid |
| CN105864648A (en) * | 2016-03-31 | 2016-08-17 | 中山市帝森电子科技有限公司 | A LED lighting fixture with a colored halo |
| CN109946775A (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 |
| WO2020019713A1 (en) * | 2018-07-25 | 2020-01-30 | 深圳市绎立锐光科技开发有限公司 | Led lighting device |
| CN114415279A (en) * | 2021-12-28 | 2022-04-29 | 宁波信泰机械有限公司 | A composite film layer that can transmit white light and its preparation method and application |
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| CN2154492Y (en) * | 1992-09-23 | 1994-01-26 | 陈陟岗 | Optical film frame and filter assembly in it |
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| TW200502591A (en) * | 2003-04-15 | 2005-01-16 | Alps Electric Co Ltd | Multi-layer optical filter and optical component |
| CN101004463A (en) * | 2006-01-20 | 2007-07-25 | 义平有限公司 | Lens for enhancing color contrast |
| JP2008216770A (en) * | 2007-03-06 | 2008-09-18 | Bridgestone Corp | Optical filter and manufacturing method thereof, optical filter for display and display provided with same, and plasma display panel |
| US20100085758A1 (en) * | 2008-10-02 | 2010-04-08 | Hidenori Takahashi | Light source device |
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2011
- 2011-07-12 CN CN2011101932387A patent/CN102401918B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2154492Y (en) * | 1992-09-23 | 1994-01-26 | 陈陟岗 | Optical film frame and filter assembly in it |
| CN1535393A (en) * | 2001-05-24 | 2004-10-06 | 丹尼尔・内森・卡彭 | Neodymium oxide doped vehicle windshields, safety glazing materials and glazings |
| TW200502591A (en) * | 2003-04-15 | 2005-01-16 | Alps Electric Co Ltd | Multi-layer optical filter and optical component |
| CN101004463A (en) * | 2006-01-20 | 2007-07-25 | 义平有限公司 | Lens for enhancing color contrast |
| JP2008216770A (en) * | 2007-03-06 | 2008-09-18 | Bridgestone Corp | Optical filter and manufacturing method thereof, optical filter for display and display provided with same, and plasma display panel |
| US20100085758A1 (en) * | 2008-10-02 | 2010-04-08 | Hidenori Takahashi | Light source device |
Non-Patent Citations (1)
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| 潘忠泉等: "用氧化钬玻璃滤光片校准分光光度计波长", 《计量技术》, 31 December 1995 (1995-12-31), pages 31 - 36 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181626A (en) * | 2014-08-29 | 2014-12-03 | 上海和辉光电有限公司 | Polaroid, manufacturing method of polaroid and displayer comprising polaroid |
| CN105864648A (en) * | 2016-03-31 | 2016-08-17 | 中山市帝森电子科技有限公司 | A LED lighting fixture with a colored halo |
| CN109946775A (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 |
| WO2020019713A1 (en) * | 2018-07-25 | 2020-01-30 | 深圳市绎立锐光科技开发有限公司 | Led lighting device |
| CN114415279A (en) * | 2021-12-28 | 2022-04-29 | 宁波信泰机械有限公司 | A composite film layer that can transmit white light and its preparation method and application |
| WO2023123538A1 (en) * | 2021-12-28 | 2023-07-06 | 宁波信泰机械有限公司 | Composite film layer capable of transmitting white light, preparation method therefor and application |
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| Publication number | Publication date |
|---|---|
| CN102401918B (en) | 2013-11-06 |
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Effective date of registration: 20151208 Address after: 475500, Kaifeng County, Henan province Weishi industrial agglomeration Village Patentee after: HENAN BALASI OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: Taishan Suzhou high tech Zone 215001 Suzhou Road, Jiangsu province No. 2 (Canton Science Park) Patentee before: Suzhou Kunlun Industry Design Co., Ltd. |
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| 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: 20131106 Termination date: 20160712 |