Invention Grant
- Patent Title: LED lighting device compatible with night vision devices
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Application No.: US14508122Application Date: 2014-10-07
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Publication No.: US09752756B2Publication Date: 2017-09-05
- Inventor: Ralf Biertuempfel , Steffen Reichel , Michael Landi
- Applicant: SCHOTT AG
- Applicant Address: DE Mainz
- Assignee: SCHOTT AG
- Current Assignee: SCHOTT AG
- Current Assignee Address: DE Mainz
- Agency: Ohlandt, Greeley, Ruggiero & Perle, L.L.P.
- Priority: DE102013111081 20131007
- Main IPC: G09F13/04
- IPC: G09F13/04 ; F21V9/04 ; B64D43/00 ; B64D47/02 ; F21K9/60 ; F21Y115/10

Abstract:
A lighting device is provided that includes an LED and an NIR filter for a control panel or a display, which does not interfere with a night vision device. The light of the LED is in an area of u′>0.19 and v′>0.46 of the u′v′ diagram of the CIE-LUV chromaticity diagram. The NIR filter exhibits descending light transmittance between 500 nm and 800 nm. The thickness of the NIR filter is chosen so that a sufficient blocking effect is provided in a range of wavelengths between 600 nm and 800 nm, so that the color coordinates of the filtered useful light are in an area with a radius of 0.04 around coordinates u′=0.19 and v′=0.49 of the u′v′ diagram.
Public/Granted literature
- US20150138756A1 LED LIGHTING DEVICE COMPATIBLE WITH NIGHT VISION DEVICES Public/Granted day:2015-05-21
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