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:
Apr. 14, 1998
Filed:
Feb. 26, 1997
Robert J Hutchinson, Pittsford, NY (US);
Lucid Technologies, Inc., Henrietta, NY (US);
Abstract
In order to preclude unreliable or inaccurate spectrophotometric measurements which can be caused by thermal effects (expansion/contraction) of components of the spectrophotometer, such as the dispersive element, the arm or mounting for changing the orientation of the element to scan the spectrum and produce spectral measurements, the element, and also displacement of the photodetector, lenses and other optical elements which can caused thermal effects, and also to reduce temperature-related errors in the photodetector or other electronics of the spectrophotometer, a temperature sensor is disposed in thermally coupled relationship within the spectrophotometer housing. A motor, which is coupled to the arm to change the orientation of the element and to the motor controller, is programmed to utilize the motor as a heat source in response to the temperature of the spectrophotometer detected by the sensor when the motor is not actuating the element grating to provide spectral measurements.