Patent · US Expired

Method of and apparatus for altering sensitivity of photometer to different scene portions

US4486087A · kind A · utility

1Cited by

13References

7Claims

0Family size

Assignee

Polaroid Corporation · US

Inventors

Peter P. Carcia · Reading, US
Richard J. Coppa · Westwood, US

Key dates

Filing date	Apr 4, 1983
Grant date	Dec 4, 1984
Priority date	—
Expiry date	Apr 4, 2003

Classification

Technology area (CPC G)Physics
CPC primaryG03B7/20
WIPO fieldOptics
WIPO sectorInstruments

Abstract

There are disclosed method of and apparatus for evaluating radiation in the scene. The evaluating apparatus includes a photoresponsive arrangement having a given angular directional response and a plurality of lenses respectively mounted for movement between a first position in optically operative alignment with the photosensitive arrangement for altering the given angular directional response thereof, and a second position out of the operative alignment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.