CN111403572A - Green A-type L ED light source compatible with night vision imaging system - Google Patents
Green A-type L ED light source compatible with night vision imaging system Download PDFInfo
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- CN111403572A CN111403572A CN202010171165.0A CN202010171165A CN111403572A CN 111403572 A CN111403572 A CN 111403572A CN 202010171165 A CN202010171165 A CN 202010171165A CN 111403572 A CN111403572 A CN 111403572A
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- 230000004297 night vision Effects 0.000 title claims abstract description 37
- 238000003384 imaging method Methods 0.000 title claims abstract description 15
- 238000004806 packaging method and process Methods 0.000 claims abstract description 17
- 239000003292 glue Substances 0.000 claims description 15
- 239000011324 bead Substances 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000000040 green colorant Substances 0.000 claims description 3
- -1 1, 4-cyclohexanedimethanol phthalate Chemical compound 0.000 claims description 2
- 239000004954 Polyphthalamide Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- 229920006375 polyphtalamide Polymers 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 description 13
- 238000005286 illumination Methods 0.000 description 6
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
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- 238000005316 response function Methods 0.000 description 2
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- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- NWFNSTOSIVLCJA-UHFFFAOYSA-L copper;diacetate;hydrate Chemical compound O.[Cu+2].CC([O-])=O.CC([O-])=O NWFNSTOSIVLCJA-UHFFFAOYSA-L 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 239000004413 injection moulding compound Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/483—Containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/54—Encapsulations having a particular shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
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- Engineering & Computer Science (AREA)
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- Manufacturing & Machinery (AREA)
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Abstract
The invention relates to a green A-type L ED light source compatible with a night vision imaging system, which comprises a bracket, a L ED chip and packaging adhesive, and is characterized in that the chips are a blue-green light chip with the peak wavelength of 480nm-520nm and a green light chip with the peak wavelength of 520nm-540nm, the two chips emit light simultaneously in a serial or parallel mode, and the packaging adhesive is transparent packaging adhesive or green packaging adhesive.
Description
Technical Field
The invention relates to the technical field of night vision imaging and night vision compatibility, and the technical field of L ED, in particular to a green A-type L ED light source compatible with a night vision imaging system.
Background
The night Vision system nvis (night Vision Imaging system) refers to a device that can generate a visible image by photoelectric conversion at night or in a low-brightness illumination environment (such as moonlight, starlight, etc.), and the photosensitive material used in the device generally converts visible light and near-infrared visible light. Besides military application, the NVIS is also applied to night patrol, reconnaissance, law enforcement and other actions of departments such as public security, armed police and the like, and night monitoring and guard work of important bank materials and warehouses.
A night vision compatible light source is mainly used for an inner cabin panel of equipment such as military airplanes and armored vehicles. The cabin is illuminated when the night vision device is used by an operator without interfering with the night vision equipment. To ensure successful application of NVIS systems, implementation of night vision Compatibility (NVIS-Compatibility) is crucial. In the case of military aircraft, for example, flight crew may need to use night vision equipment within the aircraft cabin during some practical tasks. The required night vision compatibility therefore means that the lighting systems inside and outside the aircraft do not interfere with NVIS and remain visible.
If the lighting and display systems in an aircraft emit more red and infrared light, this will interfere with NVIS and the following problems arise:
(1) so that the NVIS generates halo phenomenon, reduces the readability of the image,
(2) the readability and sensitivity of the NVIS is reduced,
(3) the red light produced by the light source by reflection causes NVIS to ghost.
Night vision compatibility is achieved by using night vision compatible lighting and night vision compatible display systems.
The reference standards include American military Standard MI L-L-85762A, MI L-STD-3009 and national military Standard GJB11394 aircraft interior illumination compatible with night vision imaging systems.
The night vision compatible illumination sources are classified by chromaticity (color), and include 5 kinds of NVIS green A, NVIS green B, NVIS yellow, NVIS red, and NVIS white, wherein the most NVIS green a is applied, mainly for main illumination, auxiliary illumination, a controller for an interior light source, cabin lighting, a general lamp working lamp and an inspection lamp, an attention lamp warning lamp, and a parachuting lamp of a military aircraft, and, for the illumination source having the chromaticity of NVIS green a, the night vision radiance is further subdivided into 3 kinds of a (CA L SS a), B (CA L SS B), C (CA L SS C)3, and the evaluation is calculated by 3 different algorithms, respectively, in such a manner that whether or not the standard requirements are satisfied according to the limit values of the measured chromaticity and radiance value comparison standards, fig. 1 is the NVIS green a kind labeled in CIE1931 color coordinates and NVIS green B, NVIS yellow, NVIS red chromaticity range, fig. 2 is a relative spectral response function of the calculated radiance corresponding to the NVIS green a class, and NVIS yellow, and the integrated value is multiplied by a luminous intensity of 10 cm/(isa) line, and the luminous intensity of the calculated luminous intensity is 10cm2sr)。
The method mainly comprises the steps of superposing a green filter on a conventional white light L ED, wherein the filter is a special NVIS filter which is compatible and customized for NVIS due to strict regulations on light emission requirements, the filter is complex in process and high in cost due to the fact that accurate control on output wavelength needs to be considered, and in order to meet the chromaticity requirements, the filter can only be matched with white light L ED for use, and a large part of red waveband light emission wavelength needs to be generated firstly in principle and then filtered and removed by the filter, so that energy waste is caused.
The night vision imaging system compatible green A L ED light source provided by the invention is different from the existing night vision compatible L ED light source in that the link of using a light filter is abandoned, and 2 chips with different wavelengths are used, so that the night vision imaging system compatible green A L ED light source is suitable for the current mature L ED production process, completely meets the requirements of night vision compatible luminescence, and ensures the stability of mass production and the structural stability.
Disclosure of Invention
The green A-type L ED light source compatible with the night vision imaging system provided by the invention can emit light through two L ED chips with different wavelengths simultaneously, and simultaneously meets the green A-type chromaticity range and the A (CA L SS A), B (CA L SS B) and C (CA L SS C) 3-type night vision radiance.
A green A-type L ED light source compatible with a night vision imaging system comprises a support, a L ED chip and packaging glue, and is characterized in that the chip is a blue-green light chip with a peak wavelength of 480nm-520nm and a green light chip with a peak wavelength of 520nm-540nm, the two chips emit light simultaneously in a serial connection or parallel connection mode, and the packaging glue is transparent packaging glue or green packaging glue.
The green packaging adhesive consists of a green color agent and transparent packaging adhesive.
The glue material in the transparent packaging glue is one or more of methyl organic silica gel, phenyl organic silica gel and epoxy resin.
The light transmission wavelength of the green colorant is 450nm-600nm so as to absorb red wave bands above 600nm generated by L ED chips.
The material of the bracket is polyphthalamide, phthalic acid 1, 4-cyclohexane dimethanol ester or epoxy resin injection molding compound.
L ED light source's form is paster lamp pearl, cut straightly lamp pearl, L ED light emitting module, L ED lamp plate or digital display tube.
The compatible green A-type L ED light source of the night vision imaging system provided by the invention has the following characteristics:
1. practical use brightness range of 1.7cd/m of light source compatible with night vision imaging system2-5.1cd/m2L ED chip drive current is low, and the luminescent spectrum is narrow, and red light wave band component is few in the spectrum, satisfies night vision radiance restriction requirement to further reduce night vision radiance through green toner absorption, improve the performance.
2. The invention adjusts the luminous chromaticity by the simultaneous luminescence of two chips with different wavelengths, thereby meeting the requirement of green A-type chromaticity range while ensuring the low night vision radiance.
3. The L ED product of the invention uses standard L ED mass production process, has high mass production convenience and high stability, and ensures the light-emitting consistency of the product.
4. The L ED product of the invention does not contain an additional filter film structure, and has higher structural stability and durability.
5. The compatible light source of the night vision imaging system is L ED light source, is not limited to a patch lamp bead, a direct-insert lamp bead, a L ED light-emitting module and a L ED lamp panel or a digital display tube, is flexible and various in use mode, and is suitable for lighting and display requirements of various forms.
Drawings
FIG. 1 shows the chromaticity ranges of NVIS Green A and NVIS Green B, NVIS yellow, NVIS Red, labeled in CIE1931 color coordinates,
FIG. 2 is a graph showing the relative spectral response functions of NVIS A and class B for calculating night vision radiance,
fig. 3 is a schematic structural view of L ED lamp beads of embodiment 1 and 2 of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Example 1
As shown in fig. 3, the L ED lamp bead of this embodiment includes L ED chip 1, electrodes 2 and L ED holder 3, and the electrodes are respectively at two ends of L ED holder 3 and are used for leading out the positive and negative electrodes of L ED chip 1.
First, a chip 1 (in this embodiment, L ED chips with peak wavelengths of 510nm and 530nm are used) is fixed on the L ED bracket 3, and two ends of the chip are connected to the electrode pads on the bottom of the substrate through gold wires respectively so as to be conducted with the two electrodes 2.
Then, epoxy resin transparent packaging glue is prepared according to a certain proportion, evenly stirred and defoamed in vacuum.
Furthermore, the mixed colloid is uniformly coated above the L ED chip, and the coating thickness is reasonably set, so that good light color uniformity is ensured.
Table 1 shows the test results obtained by testing the professional test equipment in embodiment 1 of the present invention
Table 1 shows the test report obtained by the professional testing equipment in this embodiment. The measurement field is 3 degrees, and the spectrum test range is 380nm-1000 nm. At a surface luminance of 2.1cd/m2Meanwhile, the night vision radiance simultaneously meets the requirements that the A (CA L SS A), the B (CA L SSB) and the C (CA L SS C)3 (NVIS Results are all less than 1.7E-10cm2sr). The measured chromaticity is CIE1931 x:0.2125 and y:0.6775, and meets the requirement of green A chromaticity. Thus, the final pass determination result is obtained.
Example 2
As shown in fig. 3, the L ED lamp bead of this embodiment includes L ED chip 1, electrodes 2 and L ED holder 3, and the electrodes are respectively at two ends of L ED holder 3 and are used for leading out the positive and negative electrodes of L ED chip 1.
First, a chip 1 (in this embodiment, L ED chips with peak wavelengths of 510nm and 530nm are used) is fixed on the L ED bracket 3, and two ends of the chip are connected to the electrode pads on the bottom of the substrate through gold wires respectively so as to be conducted with the two electrodes 2.
Then, L ED packaging glue containing green color agent is prepared according to a certain proportion (in the embodiment, the verdigris agent: the epoxy resin and the color agent: 100 epoxy resin in the weight ratio of 1) and is stirred uniformly and defoamed in vacuum.
Furthermore, the mixed colloid is uniformly coated above the L ED chip, and the coating thickness is reasonably set, so that good light color uniformity is ensured.
Table 2 shows the test results obtained by testing the professional test equipment in embodiment 2 of the present invention
Table 2 shows the tests obtained by the test of the professional test equipment in this embodimentAnd (6) reporting. The measurement field is 3 degrees, and the spectrum test range is 380nm-1000 nm. At a surface luminance of 3.3cd/m2Meanwhile, the night vision radiance simultaneously meets the requirements that the A (CA L SS A), the B (CA L SSB) and the C (CA L SS C)3 (NVIS Results are all less than 1.7E-10cm2sr). The measured chromaticity is CIE1931 x:0.2334 and y:0.6273, and meets the requirement of green A chromaticity. Thus, the final pass determination result is obtained.
Claims (6)
1. A green A-type L ED light source compatible with a night vision imaging system comprises a support, a L ED chip and packaging glue, and is characterized in that the chip is a blue-green light chip with a peak wavelength of 480nm-520nm and a green light chip with a peak wavelength of 520nm-540nm, the two chips emit light simultaneously in a serial connection or parallel connection mode, and the packaging glue is transparent packaging glue or green packaging glue.
2. A green class a L ED light source according to claim 1, the green encapsulating glue consisting of green colorant and transparent encapsulating glue.
3. A green A-type L ED light source according to claim 1 or 2, wherein the transparent encapsulating glue is one or more of methyl organic silica gel, phenyl organic silica gel and epoxy resin.
4. The green A-type L ED light source of claim 2, wherein the green colorant has a transmission wavelength of 450nm-600nm to absorb the red wavelength band above 600nm generated by L ED chips.
5. A green class A L ED light source according to claim 1, wherein the material of the holder is polyphthalamide, 1, 4-cyclohexanedimethanol phthalate or epoxy injection moulded compounds.
6. The green class A L ED light source of claim 1, the L ED light source being in the form of a patch light bead, a direct light bead, a L ED light module, a L ED light panel, or a digital display tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010171165.0A CN111403572A (en) | 2020-03-12 | 2020-03-12 | Green A-type L ED light source compatible with night vision imaging system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010171165.0A CN111403572A (en) | 2020-03-12 | 2020-03-12 | Green A-type L ED light source compatible with night vision imaging system |
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| Publication Number | Publication Date |
|---|---|
| CN111403572A true CN111403572A (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010171165.0A Pending CN111403572A (en) | 2020-03-12 | 2020-03-12 | Green A-type L ED light source compatible with night vision imaging system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040145893A1 (en) * | 2003-01-29 | 2004-07-29 | Cmc Electronique Inc. | Night vision imaging system (NVIS) compliant instrument panel component |
| CN1917239A (en) * | 2006-09-05 | 2007-02-21 | 深圳市中电淼浩固体光源有限公司 | LED light source compatible to night vision |
| CN1916732A (en) * | 2006-09-05 | 2007-02-21 | 深圳市中电淼浩固体光源有限公司 | LCD backlight system with compatibility of night vision of using LED light source |
| US20070171623A1 (en) * | 2006-01-24 | 2007-07-26 | Astronautics Corporation Of America | Night vision compatible display backlight |
| CN207409512U (en) * | 2017-10-10 | 2018-05-25 | 永林电子有限公司 | A kind of mixing cyan light LED structure |
-
2020
- 2020-03-12 CN CN202010171165.0A patent/CN111403572A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040145893A1 (en) * | 2003-01-29 | 2004-07-29 | Cmc Electronique Inc. | Night vision imaging system (NVIS) compliant instrument panel component |
| US20070171623A1 (en) * | 2006-01-24 | 2007-07-26 | Astronautics Corporation Of America | Night vision compatible display backlight |
| CN1917239A (en) * | 2006-09-05 | 2007-02-21 | 深圳市中电淼浩固体光源有限公司 | LED light source compatible to night vision |
| CN1916732A (en) * | 2006-09-05 | 2007-02-21 | 深圳市中电淼浩固体光源有限公司 | LCD backlight system with compatibility of night vision of using LED light source |
| CN207409512U (en) * | 2017-10-10 | 2018-05-25 | 永林电子有限公司 | A kind of mixing cyan light LED structure |
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Application publication date: 20200710 |