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.
Patent No.:
Date of Patent:
Aug. 13, 2013
Filed:
Nov. 02, 2008
Gil Tidhar, Modiin, IL;
Gil Tidhar, Modiin, IL;
Elta Systems Ltd., Ashdod, IL;
Optigo Systems Ltd., Lod, IL;
Abstract
In accordance with an aspect of the invention, there is provided a thermal radiation marker () adapted to emit radiation within the thermal portion of the infrared spectrum. According to some embodiments of the invention, the thermal radiation marker may include an incandescent filament () and a glass or quartz enclosure (). The incandescent filament may be adapted to produce radiation at least within the thermal portion of the infrared spectrum. The glass or quartz enclosure may include at least a portion that is substantially thin, and may enclose pressurized inert () gas and the incandescent filament surrounded by the inert gas. At least a portion of the glass or quartz enclosure may be sufficiently thin so as to enable good transmittance therethrough for tli3rmal radiation approximately in the 3-5&mgr,-m wavelength band. The pressurized inert gas enclosed within the glass or quartz enclosure and surrounding the incandescent filament may enable a regenerative cycle to take place within the enclosure.