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:
Mar. 19, 2002
Filed:
Jun. 30, 1998
Michael S. Bielas, Tucson, AZ (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A light source controller having a look-up table that indicates the amount of current to be provided to a light source to maintain wavelength and spectrum stability at various temperatures. Further, the light source may have a heater/cooler to maintain a constant temperature of the light source. The controller provides the appropriate current to the light source from the time of turn-on until it achieves thermal equilibrium, to provide an output having a relatively constant wavelength during the warm-up period and during changes of ambient temperature about the light source. The light source may have a heater and/or cooler to maintain a constant ambient temperature, so that the light source controller can provide a more refined control of the light source output wavelength and spectrum. The light source controller may be particularly used for a light source in a fiber optic gyroscope.