Patent · US Expired

Tunable optical filter

US6674929B2 · kind B2 · utility

10Cited by
29References
42Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 1, 2001
Grant dateJan 6, 2004
Priority date—
Expiry dateOct 18, 2021

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B6/29398
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An optical filter system is disclosed. The optical filter system includes a first filter configured to output light signals having wavelengths falling within a plurality of periodically spaced wavelength bands. A second filter in optical communication with the first filter and being configured to output light signals having wavelengths falling within a plurality of periodically spaced bands. The period of the bands associated with the first filter is different than the period of the bands associated with the second filter.

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