A detector system, filter therefor, and method of making same is disclosed. The filter includes an interference element having a reflection band disposed primarily in the near infrared, and having a high transmission over most of the visible region. The filter also includes an absorptive element that absorbs light non-uniformly over the visible region. The filter when combined with a semiconductor photodiode or other suitable detector yields a detector system whose spectral responsivity closely matches the visual response of the human eye.
CROSS REFERENCE TO RELATED APPLICATIONS
The present application is a national stage continuation of PCT Application No. US03/16128, filed May 21, 2003, published as PCT Publication No. WO03/100366 A1 on Dec. 4, 2003, which is a continuation-in-part to U.S. application Ser. No. 10/152,546, filed May 21, 2002, published as U.S. Publication No. 2003/0218123 A1 on Nov. 27, 2003.
