Title: Electrically modulatable thermal radiant source
Application Number: 95108447 Application Date: 1995.06.23
Publication Number: 1121679 Publication Date: 1996.05.01
Approval Pub. Date: 2001.06.06 Granted Pub. Date: 2001.06.06
International Classifi-cation: H01K1/08;H01K7/00
Applicant(s) Name: Instrumentarium Oy Address:
Inventor(s) Name: Martti Blomberg;Markku Orpana;Ari Lehto
Attorney & Agent: WANG ZHONGZHONG YE KAIDONG
Abstract:
    The invention is related to an electrically modulatable radiant source comprising an essentially planar substrate (1), a well (2) or hole formed into the substrate (1), at least one incandescent filament (3) attached to the substrate (1), said filament being aligned at said well (2) or hole, and contact pads (5) formed onto the substrate (1) at both ends of the incandescent filament (3) for feeding electric current to the incandescent filament (3). According to the invention, the incandescent filament (3) is made from a metal and coated with a continuous thin film (32, 36) at least for the parts floating free from the substrate (1).
Time: 14