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Title: Infrared floodlight

Abstract

An infrared floodlight assembly designed particularly for security purposes and including a heat-conducting housing, a lens secured to the housing to provide a closure therefor, and a floodlight located within (and surrounded by) the housing. The floodlight combines the use of a tungsten halogen light source and dichroic hot and cold mirrors for directing substantially only infrared radiation toward the assembly's forward lens. Visible radiation is absorbed by the housing's interior wall(s) and, optionally, by a filter located between the floodlight and lens. An optional means may be used within the floodlight to reflect all forward radiation back toward the paraboloidal hot mirror or, alternatively, to reflect only visible radiation in this direction. The dichroic hot and cold mirrors preferably each comprise a glass substrate having multiple layers of titanium dioxide and silicon dioxide thereon.

Inventors:
 [1];  [2]
  1. S. Hamilton, MA
  2. Reading, MA
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
865947
Patent Number(s):
4604680
Application Number:
06/727,961
Assignee:
GTE Products Corporation (Stamford, CT)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F21 - LIGHTING F21V - FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF
DOE Contract Number:  
96-3736
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
infrared; floodlight; assembly; designed; particularly; security; purposes; including; heat-conducting; housing; lens; secured; provide; closure; located; surrounded; combines; tungsten; halogen; light; source; dichroic; hot; cold; mirrors; directing; substantially; radiation; forward; visible; absorbed; interior; wall; optionally; filter; optional; means; reflect; paraboloidal; mirror; alternatively; direction; preferably; comprise; glass; substrate; multiple; layers; titanium; dioxide; silicon; thereon; multiple layer; interior wall; light source; infrared radiation; glass substrate; titanium dioxide; silicon dioxide; multiple layers; visible radiation; assembly design; infrared floodlight; floodlight assembly; tungsten halogen; /362/313/

Citation Formats

Levin, Robert E, and English, George J. Infrared floodlight. United States: N. p., 1986. Web.
Levin, Robert E, & English, George J. Infrared floodlight. United States.
Levin, Robert E, and English, George J. Tue . "Infrared floodlight". United States. https://www.osti.gov/servlets/purl/865947.
@article{osti_865947,
title = {Infrared floodlight},
author = {Levin, Robert E and English, George J},
abstractNote = {An infrared floodlight assembly designed particularly for security purposes and including a heat-conducting housing, a lens secured to the housing to provide a closure therefor, and a floodlight located within (and surrounded by) the housing. The floodlight combines the use of a tungsten halogen light source and dichroic hot and cold mirrors for directing substantially only infrared radiation toward the assembly's forward lens. Visible radiation is absorbed by the housing's interior wall(s) and, optionally, by a filter located between the floodlight and lens. An optional means may be used within the floodlight to reflect all forward radiation back toward the paraboloidal hot mirror or, alternatively, to reflect only visible radiation in this direction. The dichroic hot and cold mirrors preferably each comprise a glass substrate having multiple layers of titanium dioxide and silicon dioxide thereon.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {8}
}

Patent:

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