Night vision goggle compatible alarm
First Claim
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1. A visual alarm compatible with the use of night vision goggles in a vehicle, said alarm being characterized by:
- a first light source which, is activated in response to the detection of an emergency condition by detecting means and causes at least temporary blooming of said night vision goggles;
a second light source which is visible without night vision goggles and does not cause blooming when viewed through night vision goggles for rendering said alarm visible at night with an unaided eye; and
control means for briefly actuating said first light source and subsequently extinguishing said first light source and activating said second light source in response to a detected emergency condition.
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Accused Products
Abstract
A visual alarm suitable for use with night vision goggles comprises a red incandescent lamp (105); a blue, green or blue-green electroluminscent panel (130); and control means to sequentially activate the above-mentioned light sources. Brief activation of the red lamp causes momentary partial blooming of the night vision goggles to warn of an emergency condition. Subsequent steady energization of the electroluminescent panel provides a continuous observable alarm which does not interfere with operation of the night vision goggles.
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6 Claims
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1. A visual alarm compatible with the use of night vision goggles in a vehicle, said alarm being characterized by:
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a first light source which, is activated in response to the detection of an emergency condition by detecting means and causes at least temporary blooming of said night vision goggles; a second light source which is visible without night vision goggles and does not cause blooming when viewed through night vision goggles for rendering said alarm visible at night with an unaided eye; and control means for briefly actuating said first light source and subsequently extinguishing said first light source and activating said second light source in response to a detected emergency condition. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification