CN1936416A - LED light source compatible with night-vision imaging system and lighting system - Google Patents
LED light source compatible with night-vision imaging system and lighting system Download PDFInfo
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- CN1936416A CN1936416A CNA2006100966402A CN200610096640A CN1936416A CN 1936416 A CN1936416 A CN 1936416A CN A2006100966402 A CNA2006100966402 A CN A2006100966402A CN 200610096640 A CN200610096640 A CN 200610096640A CN 1936416 A CN1936416 A CN 1936416A
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- light source
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- imaging system
- night
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Abstract
This invention discloses a low cost and conveniently matched light source utilizing color LED and compatible with the night-view imaging system and manufactures related illumination system combining the character of said light source by applying two or more than two selected different wavelengths of LED radiation diodes to mix and adjust the proportion of brightness so as to get various night-view compatible light sources.
Description
Technical field
The present invention relates to special lighting with light source and optical system, especially a kind of night viewing compatible light source and illuminator thereof of utilizing synthesized source to replace colour filter light source gained, specifically a kind of led light source and illuminator thereof of and Night Vision Imaging System compatibility.
Background technology
At present, in most of the cases, the light source of aviation airborne equipment, indicator lamp, display all require and Night Vision Imaging System (NVIS) compatibility, and spatial distribution characteristic, brightness, the brightness of colourity spoke to light source and indicator lamp simultaneously all has extremely strict requirement.Traditional and the light source NVIS compatibility (or display backlight source) generally are to come long wavelength's spectrum more than the certain wavelength of filtering by special colour filter, coating or coating, remove that the method for the energy of long wavelength's spectrum manufactures and designs.Colour filter, coating or coating be by the atom in the material or molecule itself to wavelength absorption special in the spectrum and the spectrum in the filtering certain limit, it makes complicated, cost height, final effect are often undesirable.
The light source of some and NVIS compatibility to the requirement of spectrum for example as shown in Figure 1; Different night viewing compatible light source such as the green standard illuminant As that require, λ 2 is approximately 540--550nm, and λ 1 is approximately 520--535nm, and chromaticity coordinates is u '=0.088 in CIE 1976 UCS collection of illustrative plates, v '=0.543, franchise r=0.037.For with the monochrome display of NVIS compatibility, brightness is 1.713cd/m
2The time, spoke brightness requirement NR
A≤ 1.7 * 10
-10W/Srcm
2NR
B≤ 1.6 * 10
-10W/Srcm
2
For the night vision white light source of color monitor, λ 2 is approximately 625--635nm, and λ 1 is approximately 605--620nm, and chromaticity coordinates is u '=0.190 in CIE 1976 UCS collection of illustrative plates, v '=0.490, franchise r=0.04.For with the compatible color monitor of NVIS, brightness is 1.713cd/m
2The time, spoke brightness requirement NR
A≤ 2.3 * 10
-9W/Srcm
2, NR
B≤ 2.2 * 10
-9W/Srcm
2
NR
A, NR
BIt is respectively A, category-B NVIS equipment requirement to spoke brightness.
Relevant aviation airborne equipment illumination, indication and display light source detail requirement and the technical descriptioon compatible to Night Vision Imaging System (NVIS), NR
A, NR
BComputational methods etc. all can be referring to GJB 1394-92 " with the interior of aircraft illumination of Night Vision Imaging System compatibility ".
Meanwhile have following technological merit as present very ripe emitting led product:
1, the batch products consistent wavelength is good, the peak wavelength error can be controlled at ± 5nm in.Be convenient to guarantee the uniformity and the accuracy of the dominant wavelength of night viewing compatible light source.
2, the spectral power distribution relative wavelength is concentrated, the concentration of energy of common product about 99.9% peak wavelength ± 20nm within.Its Energy distribution decline curve very the ideal-like colour filter by curve.As Fig. 2;
3, brightness, wavelength are good to temperature stability, in-40 ℃ of-+80 ℃ of scopes, and the relative normal temperature rate of change of brightness≤-15%, the relative normal temperature variable quantity ± 5nm of wavelength.Be convenient to guarantee the product ambient stable characteristic of night viewing compatible light source.
4, there is more complete product line can supply design alternative, to infrared, comprises that the LED product in the visible-range is ripe technically, be convenient to the product design of night viewing compatible light source from ultraviolet.
But according to the knowledge of the applicant at present with the premium properties of above-mentioned LED and known color theory design configurations be used for do not appear in the newspapers as yet with the technology of the compatible light source of Night Vision Imaging System compatibility.
Summary of the invention
The objective of the invention is at present and the light source of Night Vision Imaging System compatibility be general light source and add that colour filter or filter membrane manufacturing form existing development process complexity, the cost height, the often unfavorable problem of final effect, invent that a kind of cost that utilizes color LED configuration and obtain is low, the structure configuration simply and easily with the light source of Night Vision Imaging System compatibility, the characteristics in conjunction with this light source produce corresponding illuminator simultaneously.
Technical scheme of the present invention is:
A kind of light source of and Night Vision Imaging System compatibility is characterized in that it is formed by following method configuration:
A, choose two kinds of crest wavelength differences at least, and all less than Night Vision Imaging System characteristic wavelength λ
1The color LED light emitting diode;
B, select the color of color LED light emitting diode according to the requirement of CIE 1976 UCS collection of illustrative plates distribution of color and color matching general rule and Night Vision Imaging System;
C, the color LED luminous tube of selected different colours is linked to each other with drive circuit, make the adjustable brightness of the light emitting diode of every kind of color wherein;
D, adjust the brightness and the ratio thereof of versicolor LED light emitting diode respectively,, promptly get night viewing compatible light source of the present invention so that the requirement of Night Vision Imaging System is all satisfied in brightness, chromaticity coordinates and spoke brightness after each color LED light emitting diode colour mixture.
A kind of LED night viewing compatible light source that utilizes aforementioned gained that make with the illuminator Night Vision Imaging System compatibility, it is characterized in that on the side of LGP (1), being equipped with the some groups of compatible light sources of forming by color LED lumination of light emitting diode group (2), every group of compatible light source should guarantee that apart from the distance L 1 of guide plate (1) side colour mixture is abundant, and the quantity of described compatible light source led lumination of light emitting diode group (2) is by single group luminosity decision of the color LED luminous group (2) in the LGP that requires (1) total brightness, each night viewing compatible light source.(see figure 5).
On other sides of LGP (1) or two sides, White LED is installed, it constituted that monochrome of the present invention or colour liquid crystal display device use can with the illuminator of Night Vision Imaging System compatibility, can satisfy the night vision needs, also can satisfy and use the needs (see figure 6) daytime.
In LGP (1) sole arrangement high brightness White LED or CCFL fluorescent tube are arranged, it constituted also that monochrome of the present invention or colour liquid crystal display device use can with the illuminator of Night Vision Imaging System compatibility, can satisfy the night vision needs, also can satisfy and use the needs (see figure 7) daytime.
A kind of utilize aforesaid IED night viewing compatible light source that make with the illuminator Night Vision Imaging System compatibility, it is characterized in that on the bottom surface of light-emitting zone, being equipped with night viewing compatible light source and White LED, it constituted equally that monochrome of the present invention or colour liquid crystal display device use can with the illuminator of Night Vision Imaging System compatibility, can satisfy the night vision needs, also can satisfy and use the needs (see figure 8) daytime.
The present invention has the following advantages:
The present invention has that low cost, design cycle are short, the advantage of applied range, can be used for making the airborne compatible with Night Vision Imaging System (NVIS), vehicle-mounted, boat-carrying or handheld device illumination, indication and display light source.
It is long that the present invention also has the life-span, and installation and maintenance are advantage easily.
Description of drawings
Fig. 1 is and the relative distribution requirement to spectrum of the light source of NVIS compatibility, and λ 1 is a night viewing compatible light source characteristic spectrum crest wavelength, and λ 2 is 1 * 10 for main relatively energy ratio
-3The energy wavelength.
Fig. 2 is typical LED spectral distribution graph, about 99.9% concentration of energy peak wavelength ± 20nm within.λ 3 is a LED energy spectrum crest wavelength, and λ 4 is 1 * 10 for relative main peak energy ratio
-3The energy wavelength.
Fig. 3 is two kinds of mixed spectral distribution graphs of LED.λ 5 is the LED energy spectrum crest wavelength that influences the longer wavelength of spoke luminance index, and λ 6 is 1 * 10 for relative main peak energy ratio
-3The energy wavelength.
Fig. 4 is three kinds of mixed spectral distribution graphs of LED, and three looks are R (red), G (green), B (indigo plant);
Fig. 5 is the colour mixture light path schematic diagram of light guide panel.
Fig. 6 is a side mode monochrome backlight or colour liquid crystal display device night viewing compatible colour mixture light path schematic diagram backlight.
Fig. 7 is the mode monochrome or the colour liquid crystal display device night viewing compatible light path schematic diagram backlight of the backlight and side mixing backlight in the end.
Fig. 8 is an end mode backlight full LED illumination mode monochrome or colour liquid crystal display device night viewing compatible colour mixture light path schematic diagram backlight.
The specific embodiment
The present invention is further illustrated for following structure drawings and Examples.
Shown in Fig. 2-8.
A kind of led light source of and Night Vision Imaging System compatibility, it is formed by following method configuration:
A, choose two kinds of crest wavelength differences at least, and all less than Night Vision Imaging System characteristic wavelength λ
1The color LED light emitting diode;
B, select the color of color LED light emitting diode according to the requirement of CIE 1976 UCS collection of illustrative plates distribution of color and color matching general rule and Night Vision Imaging System;
C, the color LED luminous tube of selected different colours is linked to each other with drive circuit, make the adjustable brightness of the light emitting diode of every kind of color wherein;
D, adjust the brightness and the ratio thereof of versicolor LED light emitting diode respectively,, promptly get night viewing compatible light source of the present invention so that the requirement of Night Vision Imaging System is all satisfied in brightness, chromaticity coordinates and spoke brightness after each color LED light emitting diode colour mixture.
A kind of night viewing compatible light source that utilizes aforementioned gained that make with the illuminator Night Vision Imaging System compatibility, the some groups of compatible light sources of being made up of luminous group of color LED light emitting diode (2) are installed on a side of LGP (1), every group of compatible light source should guarantee that apart from the distance L 1 of guide plate (1) side colour mixture is abundant, the quantity of described compatible light source is by the length of side of LGP (1), spacing L2 between luminous group of the color LED light emitting diode (2) in each compatible light source and angle of departure R decision thereof, see Fig. 5, L1 is that the mixed light offset is from (general span is 5-10mm) among the figure, too little meeting colour mixture is insufficient, and color homogeneity is poor.1 is the LGP of light guide panel, and the light after the colour mixture is transmitted to needs luminous position.2 is luminous group that the LED of two or two different colours forms, and the phase mutual edge distance is as much as possible little.L3 is two groups of mixed light LED distances, calculates maximum L3 according to L1 and LED angle of departure R, and L3 is as far as possible little, with color homogeneity and the brightness that guarantees to show or throw light on.
For make light source that monochrome or colour liquid crystal display device use can with the Night Vision Imaging System compatibility, can satisfy the night vision needs, also can satisfy and use daytime needs can adopt structure shown in Figure 6, promptly on the opposite side of LGP 2 or two sides, White LED is installed, among Fig. 6 at some side arrangement LED night viewing compatible light sources of LGP 1, in the another side or more than one side arrangement White LED just formed the colour mixture light path that can take into account the display backlight that uses in daytime and evening.2 is luminous group that the LED of two or two different colours forms, and 3 is White LED.
Can high brightness White LED or CCFL fluorescent tube be arranged in LGP 1 sole arrangement equally, it constituted also that monochrome of the present invention or colour liquid crystal display device use can with the illuminator of Night Vision Imaging System compatibility, can satisfy the night vision needs, also can satisfy and use needs daytime, see Fig. 7, at a side arrangement LED night viewing compatible light source of LGP 1, just formed at sole arrangement high brightness White LED or CCFL fluorescent tube and can take into account high brightness and the airborne LCD backlight that uses evening on daytime among Fig. 7.1 is LGP, and 2 is luminous group that the LED of two or two different colours forms, and 3 is White LED, 4 is CCFL fluorescent tube (the another kind of design of White LED relatively), 5 is reflectance coating and lamp chamber assembly, and 6 is lamp chamber and reflectance coating assembly, 7 for optical film assembly be reflectance coating and lamp chamber assembly.
Also night viewing compatible light source and White LED can be installed on the bottom surface of light-emitting zone directly during concrete enforcement, it constituted equally that monochrome of the present invention or colour liquid crystal display device use can with the illuminator of Night Vision Imaging System compatibility, can satisfy the night vision needs, also can satisfy and use needs daytime, see Fig. 8, directly arrange LED night viewing compatible light source and White LED on the pcb board of the bottom surface of LGP among Fig. 8, formation can take into account high brightness and the LCD backlight that uses evening on daytime.2 is mixed color LED night viewing compatible light source luminescent group, and 7 is optical film assembly, and 6 is reflectance coating and lamp chamber assembly, and 3 is the high brightness White LED.
Carry out spectrum analysis by the night viewing compatible light source that difference is required in sum, utilize the extremely narrow spatial distribution characteristic of LED wavelength, wavelength stability and brightness regulation control characteristic thereof, adopt the LED luminous tube of two or more different wave length to mix, regulate brightness size (colour mixture ratio), thereby obtain the various night viewing compatible light sources of demand.
These special light sources not only claim to colourity, and luminosity, spectral radiance have been proposed strict quantification requirement.Because NVIS is high to the spectrum sensitivity of certain wave-length coverage in its work spectral region, can not comprise spectrum in these wave-length coverages, the energy of these corresponding spectrum with the light source (or display) of NVIS compatibility.
Adopt this method selectively to be mixed into the backlight spectrum that equipment indicator lamp, alarm lamp or display need as Fig. 3, Fig. 4 with two or three LED, and the spectrum that does not comprise the NVIS sensitivity, can obtain good night viewing compatible light source light spectrum characteristic, simplified design method and product development cycle.The present invention also can be used for other has the design and the manufacturing of the light source of accurate strict demand to light source light spectrum characteristic, spoke brightness and brightness, Electro Magnetic Compatibility, as night flight guidance lighting lamp, alarm lamp, all kinds of monochrome or color monitor backlight, light guide panel etc.
Basic design method
1, LED selects, and the monochromatic LED energy spectrum distributes generally as shown in Figure 2 relatively, and the computational methods that several different LED spatial distribution toe-ins commonly used close on the GJB 1394-92 " with the interior of aircraft illumination of Night Vision Imaging System compatibility " are set up corresponding brightness, NR
AOr NR
BSpoke brightness EXCEL database is analyzed the night viewing compatible light source that needs design, brightness requirement, and the chromaticity coordinates requirement, the spoke brightness requirement selects two or three LED of specific wavelength to carry out the analysis of mixed spectra data computation, if NR
AOr NR
BSpoke brightness exceeds standard, and utilizes the similar principle of the homochromy LED spectral characteristic of adjacent wavelength, adjusts relevant LED peak wavelength, revises the characteristic analog computation.Finally calculate the LED wavelength and the corresponding brightness ratio thereof that meet design requirement.For the purpose of the present invention, most critical be that the LED of longer wavelength selects, it is to NR
AOr NR
BSpoke brightness calculation result's influence is very big, and the LED of another one or two wavelength cooperates long wavelength LED colour mixture to form needed light source colourity (chromaticity coordinates).To satisfying the color monitor of night viewing compatible requirement, its night vision white light source must have the red, green, blue three-color LED.To satisfying the monochrome display of green A standard night viewing compatible requirement, its night vision green light source must have green, blue dichromatism LED.NR
AOr NR
BIntegral is referring to GJB 1394-92 " with the interior of aircraft illumination of Night Vision Imaging System compatibility ".
2, the color matching basic skills is according to CIE 1976 UCS collection of illustrative plates distribution of color and color matching general rule, and the two primary colors scope that can mix colours is less, and the preparation light source color is on the relation line of this dichromatism LED wavelength; Three primary colors or four primaries method can be prepared the colour light source more than 70% in the NTSC scope.
3, selected LED is designed relevant drive circuit, control its brightness ratio.The constant voltage and current limiting method is generally arranged, the IC constant current of boosting drives method; The total brightness of light source can be regulated with PWM or adjustable current source control method, but the mutual brightness ratio of mixed color LED is constant once determining to guarantee, otherwise the color of not only matching colors changes, and NR
AOr NR
BThe result of spectral radiance can change, even exceeds standard.Relevant led drive circuit the present invention will not describe in detail.
4, the relevant light path of design satisfies the designing requirement of different product, as Fig. 5, Fig. 6, Fig. 7 Fig. 8.
Part not in the detailed description of the invention can be determined with reference to relevant design handbook and standard.
Claims (5)
1, a kind of led light source of and Night Vision Imaging System compatibility is characterized in that it is formed by following method configuration:
A, choose two kinds of crest wavelength differences at least, and all less than the color LED light emitting diode of Night Vision Imaging System characteristic wavelength λ 1;
B, select the color of color LED light emitting diode according to the requirement of CIE 1976 UCS collection of illustrative plates distribution of color and color matching general rule and Night Vision Imaging System;
C, the color LED luminous tube of selected different colours is linked to each other with drive circuit, make the adjustable brightness of the light emitting diode of every kind of color wherein;
D, adjust the brightness and the ratio thereof of versicolor LED light emitting diode respectively,, promptly get night viewing compatible light source of the present invention so that the requirement of Night Vision Imaging System is all satisfied in brightness, chromaticity coordinates and spoke brightness after each color LED light emitting diode colour mixture.
2, a kind of utilize the described night viewing compatible light source of claim 1 that make with the illuminator Night Vision Imaging System compatibility, it is characterized in that on the side of LGP (1), being equipped with the some groups of night viewing compatible light sources of forming by color LED lumination of light emitting diode group (2), every group of night viewing compatible light source should guarantee that apart from the distance L 1 of guide plate (1) side colour mixture is abundant, and the quantity of described compatible light source led lumination of light emitting diode group (2) is by single group luminosity decision of the color LED luminous group (2) in the LGP that requires (1) total brightness, each night viewing compatible light source.
3, the illuminator of according to claim 2 and Night Vision Imaging System compatibility is characterized in that on other sides of LGP (1) or two sides White LED being installed.
4, the illuminator of according to claim 2 and Night Vision Imaging System compatibility is characterized in that in LGP (1) sole arrangement high brightness White LED or CCFL fluorescent tube being arranged.
5, a kind of utilize the described compatible light source of claim 1 that make with the illuminator Night Vision Imaging System compatibility, it is characterized in that on the bottom surface of LGP (1), being equipped with LED night viewing compatible light source and White LED.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100966402A CN100570204C (en) | 2006-10-16 | 2006-10-16 | A kind of led light source and illuminator thereof of and Night Vision Imaging System compatibility |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100966402A CN100570204C (en) | 2006-10-16 | 2006-10-16 | A kind of led light source and illuminator thereof of and Night Vision Imaging System compatibility |
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| Publication Number | Publication Date |
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| CN1936416A true CN1936416A (en) | 2007-03-28 |
| CN100570204C CN100570204C (en) | 2009-12-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017041A (en) * | 2012-12-18 | 2013-04-03 | 深圳市耐比光电科技股份有限公司 | Lighting lamp for night vision imaging system and high-power LED (Light Emitting Diode) light source module of lighting lamp |
| CN103234149A (en) * | 2013-03-29 | 2013-08-07 | 京东方科技集团股份有限公司 | Backlight module, liquid crystal display and backlight drive control method |
| CN106628246A (en) * | 2016-11-17 | 2017-05-10 | 成都飞机工业（集团）有限责任公司 | Cabin illumination testing method compatible with aircraft night vision imaging system |
| CN108649135A (en) * | 2018-04-26 | 2018-10-12 | 天津通广集团振通电子有限公司 | A kind of night viewing compatible implementation method based on OLED display screen |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5211463A (en) * | 1992-03-11 | 1993-05-18 | Kaiser Aerospace & Electronics Corporation | Backlight for liquid crystal devices |
| US6419372B1 (en) * | 2000-09-08 | 2002-07-16 | Rockwell Collins, Inc. | Compact optical wave-guide system for LED backlighting liquid crystal displays |
| US7040794B2 (en) * | 2001-07-12 | 2006-05-09 | Northrop Grumman Corporation | Programmable multi-color backlight for a liquid crystal display |
| US6842204B1 (en) * | 2002-09-06 | 2005-01-11 | Rockwell Collins | Color display system for NVIS Class A compatibility |
| US20060187378A1 (en) * | 2005-02-18 | 2006-08-24 | Bong Ban S | Organic light emitting diode (OLED) backlight |
-
2006
- 2006-10-16 CN CNB2006100966402A patent/CN100570204C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017041A (en) * | 2012-12-18 | 2013-04-03 | 深圳市耐比光电科技股份有限公司 | Lighting lamp for night vision imaging system and high-power LED (Light Emitting Diode) light source module of lighting lamp |
| CN103017041B (en) * | 2012-12-18 | 2015-07-22 | 深圳市耐比光电科技股份有限公司 | Lighting lamp for night vision imaging system and high-power LED (Light Emitting Diode) light source module of lighting lamp |
| CN103234149A (en) * | 2013-03-29 | 2013-08-07 | 京东方科技集团股份有限公司 | Backlight module, liquid crystal display and backlight drive control method |
| US9726930B2 (en) | 2013-03-29 | 2017-08-08 | Boe Technology Group Co., Ltd. | Backlight module with two sets of LEDs, liquid crystal display and control method for driving the backlight module |
| CN106628246A (en) * | 2016-11-17 | 2017-05-10 | 成都飞机工业（集团）有限责任公司 | Cabin illumination testing method compatible with aircraft night vision imaging system |
| CN108649135A (en) * | 2018-04-26 | 2018-10-12 | 天津通广集团振通电子有限公司 | A kind of night viewing compatible implementation method based on OLED display screen |
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|---|---|
| CN100570204C (en) | 2009-12-16 |
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