Wide angle optical filters

Details Wide angle optical filters Wide angle optical filters

1988-03-29

1989-08-08

Corbin, John K.

350 16, G02C 522, G02C 528

Patent

active

048546704

ABSTRACT:
A thin-film optical interference filter designed and manufactured to have high transmission of blue light and high reflectance of infrared light. The novel feature of this filter rests in the thin-film layer design at the top and bottom of a quarterwave stack and the manufacturing technique by which this thin-film design is deposited. The thin-film layer design suppresses the so called halfwave holes which occur at wide angles of incidence of the incoming light. This desirable effect is achieved by the proper layer thickness and refractive index control in the manufacturing process.

REFERENCES:
patent: 2412496 (1946-12-01), Dimmick
patent: 4461532 (1984-07-01), Sato et al.
patent: 4504109 (1985-03-01), Taga et al.
patent: 4556599 (1985-12-01), Sato et al.

Affiliated with

Also associated with

Rating

Wide angle optical filters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wide angle optical filters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wide angle optical filters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-900943