US 12,317,620 B2
Variable optical filter and a wavelength-selective sensor based thereon
Karen Denise Hendrix, Santa Rosa, CA (US); Charles A. Hulse, Sebastopol, CA (US); Richard A. Bradley, Santa Rosa, CA (US); and Jeffrey James Kuna, San Francisco, CA (US)
Assigned to VIAVI Solutions Inc., Chandler, AZ (US)
Filed by VIAVI Solutions Inc., San Jose, CA (US)
Filed on Aug. 24, 2020, as Appl. No. 16/947,898.
Application 15/017,583 is a division of application No. 14/166,747, filed on Jan. 28, 2014, granted, now 9,261,634, issued on Feb. 16, 2016.
Application 16/947,898 is a continuation of application No. 16/425,280, filed on May 29, 2019, granted, now 10,756,131.
Application 16/425,280 is a continuation of application No. 15/837,180, filed on Dec. 11, 2017, granted, now 10,312,277, issued on Jun. 4, 2019.
Application 15/837,180 is a continuation of application No. 15/337,489, filed on Oct. 28, 2016, granted, now 9,842,873, issued on Dec. 12, 2017.
Application 15/337,489 is a continuation of application No. 15/017,583, filed on Feb. 5, 2016, granted, now 9,515,119, issued on Dec. 6, 2016.
Claims priority of provisional application 61/757,846, filed on Jan. 29, 2013.
Prior Publication US 2021/0028213 A1, Jan. 28, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H10F 39/00 (2025.01); G01J 3/02 (2006.01); G01J 3/26 (2006.01); G02B 5/28 (2006.01); H10F 39/18 (2025.01); G01J 3/12 (2006.01)
CPC H10F 39/8053 (2025.01) [G01J 3/0259 (2013.01); G01J 3/26 (2013.01); G02B 5/281 (2013.01); G02B 5/288 (2013.01); H10F 39/024 (2025.01); H10F 39/18 (2025.01); H10F 39/8057 (2025.01); H10F 39/807 (2025.01); H10F 39/809 (2025.01); G01J 2003/1226 (2013.01); G01J 2003/1234 (2013.01); G01J 2003/1239 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical filter comprising:
a bandpass filter, and
a first blocking filter and a second blocking filter that are different from the bandpass filter,
wherein the bandpass filter is between the first blocking filter and the second blocking filter, and
wherein the bandpass filter includes:
one or more first layers, and
one or more second layers.