Conductive infrared window

Details Conductive infrared window Conductive infrared window

1986-10-23

1989-05-02

Corbin, John K.

Electric heating

Microwave heating

Tunnel furnace

219213, 219522, 2505151, G02B 102, H05B 314, H05K 900

Patent

active

048262668

ABSTRACT:
The invention is a window for transmitting infrared radiation for use with infrared systems, such as an infrared laser. In detail, the window comprises a polycrystalline silicon substrate doped with between 1.times.10.sup.14 and 1.times.10.sup.16 atoms per cubic centimeter of an n-type impurity. The impurities can be selected from the group consisting of Phosphorus, Arsenic, Antimony, Bismouth and Lithium. To reduce reflection, both sides of the sheet are coated with an antireflection coating. Sheet resistances of less than 25 ohms per square are obtainable while simultaneously providing excellent transmission in the infrared at both room and elevated temperatures. The internal heating produced by coupling the window to a source of electrical power can be used for deicing.

REFERENCES:
patent: Re31708 (1984-10-01), Gordon
patent: 3896474 (1975-07-01), Amelio et al.
patent: 4000346 (1976-12-01), Dowell
patent: 4181774 (1980-01-01), Wente
patent: 4265974 (1981-05-01), Gordon
patent: 4652463 (1987-03-01), Peters
Hafner, H., et al., "Development of Gallium Arsenide for Infrared Windows," final report for period Jun. 25, 1975-Jun. 25, 1976 on contract F33615-75-C-5274, published Sep. 1975, Govt. Accession No. AD A 037336, report No. AFML-TR-76-163.
Steigmeier, E. et al., "Acoustical-Optical Phonon Scattering in Ge, Si, and III-V Compounds," Physical Review, vol. 141, No. 2, Jan. 1966, pp. 767-774.
"Gallium Arsenide Infrared Windows for High-Speed Airborne Applications", by M. J. Brau et al. (SPIE, vol. 29, Emerging Optical Materials, 1981).

Affiliated with

Also associated with

Rating

Conductive infrared window does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Conductive infrared window, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conductive infrared window will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-580429