The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 25, 2009

Filed:

Feb. 23, 2001
Applicant:

Tej Kaushal, Malvern, GB;

Inventor:

Tej Kaushal, Malvern, GB;

Assignee:

QinetiQ Limited, Farnborough, Hants, GB;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 23/12 (2006.01);
U.S. Cl.
CPC ...
Abstract

A thermal torch () comprises an infrared camera () and a visible light emitter () arranged so as to illuminate hot objects with visible light. This projection of visible light onto the scene, rather than observing it at infrared wavelengths converted to visible light by a display screen, makes viewing the scene more natural. Applications include medical imaging equipment, night driving systems, stage lights, and security lights. The profile of the beam of visible light can be modulated with a beam profiler () which may be a LCD. The infrared camera () and visible projector () may be bore-sighted to facilitate overlying of the visible projected image onto the scene.


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