Wavlength specific coating for mirrored optics and method for reducing reflection of white light
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
May 2, 2002
app pub date -
Mar 16, 2001
filing date -
Oct 27, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An amorphous diamond coating applied onto mirrored optics in an infrared motion sensor to block specific wavelengths of energy from a 'white light' source like a halogen lamp, without reducing the reflectivity of the mirror surface in the Mid-Infrared wavelengths. A specific thickness of diamond-like-coating is applied on top of the reflective metal surface of a mirrored part, thereby reducing the mirror's reflectivity at visible and near-Infrared wavelengths known to be problematic for IR motion sensors, such as those emitted from halogen lamps. The coating has no significant detrimental effect on mid-infrared reflectivity, so the IR motion sensor's performance is otherwise unaffected.
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