Reducing stray light in lensed optical systems

Details Reducing stray light in lensed optical systems Reducing stray light in lensed optical systems

1988-08-18

1991-02-05

Sugarman, Scott J.

G02B 112

Patent

active

049899600

ABSTRACT:
An optical lens has a blackened layer in its outer surface which extends to a depth sufficient to substantially eliminate reflected stray light in the lens. The blackened layer is formed by causing hydrogen under pressure to react for a predetermined time and temperature with a metal oxide of the optical material thereby leaving the metal oxide in its reduced form in the lens. Some of the oxides are reduced completely, leaving the metal in its elemental form in the layer.

REFERENCES:
patent: 3892582 (1975-07-01), Simms
patent: 3920463 (1975-11-01), Simms
patent: 4259406 (1981-03-01), Borrelli
patent: 4475059 (1984-10-01), Sink
patent: 4498919 (1985-02-01), Mann
patent: 4760307 (1988-07-01), Howorth

Affiliated with

Also associated with

Rating

Reducing stray light in lensed optical systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reducing stray light in lensed optical systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reducing stray light in lensed optical systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-6963