Glare protection device
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United States of America Patent
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May 3, 2005
Grant Date -
Mar 25, 2004
app pub date -
Sep 30, 2002
filing date -
Sep 23, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The glare protection device for welding applications contains an active electro-optical filter element (2) with an electronic control circuit (3). The active filter element (2) absorbs the UV-radiation up to 380 nm. An IR-plastic filter (10) is completely joined with the active electro-optical filter element by a compact adhesive layer (11) and together with it forms a single optical and mechanical unit (1) having a high transmittance in the visual region of the spectrum. The IR-plastic filter (10) contains a dye that absorbs the infrared radiation in a wavelength range of 780-1400 nm. With this, a robust, cheap and safe in operation glare protection device for various applications is created.
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