Patent · US Active

Method and apparatus for optical filtering with two passbands

US8294990B2 · kind B2 · utility

0Cited by

9References

20Claims

0Family size

Assignee

RAYTHEON CANADA LIMITED · CA

Inventors

Douglas J. Brown · Midland, CA
Daniel B. Mitchell · Midland, CA
Geoffrey G. Harris · Midland, CA

Key dates

Filing date	Sep 4, 2009
Grant date	Oct 23, 2012
Priority date	—
Expiry date	Feb 1, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01J2003/1247
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An apparatus includes an optical filter having first and second passbands that are different, the optical filter including selectively operable first passband adjusting structure that varies a characteristic of the first passband without influencing the second passband. According to a different aspect, a method includes filtering radiation with an optical filter having first and second passbands that are different, and selectively varying a characteristic of the first passband without influencing the second passband.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.