Ray absorption filter

Details Ray absorption filter Ray absorption filter

1986-05-30

1988-07-05

Corbin, John K.

Compositions

Radioactive compositions

Nuclear reactor fuel

2522991, 260378, 260380, G02B 522, C09K 334

Patent

active

047550120

ABSTRACT:
A near infrared ray absorption filter, particularly usable as a sharp cut filter for an infrared ray sensor, which comprises as an absorbent capable of controlling transmission of a ray at least one anthraquinone compound represented by the following formula, ##STR1## wherein A.sub.1, A.sub.2, A.sub.3 and A.sub.4 are different from each other or the same, and stand for a phenyl or naphthyl group unsubstituted or substituted with at least one alkyl, alkoxy, phenoxy or hydroxy group, and the rings A and B are unsubstituted or substituted with at least one lower alkyl group or halogen atom.

REFERENCES:
patent: 3722978 (1973-03-01), Sloane et al.
patent: 4145182 (1979-03-01), Opitz et al.
patent: 4432595 (1984-02-01), Manning
patent: 4446047 (1984-05-01), Thompson
patent: 4455253 (1984-06-01), Thompson
patent: 4585574 (1986-04-01), Blunck et al.

Affiliated with

Also associated with

Rating

Ray absorption filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2328556