Photometric apparatus and process

Details Photometric apparatus and process Photometric apparatus and process

1982-03-08

1985-02-26

Anderson, Bruce C.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

G01J 508

Patent

active

045019690

ABSTRACT:
Novel photometric apparatus advantageously having a conical shaped flow-cell comprising a light source proximate the narrow end and a photosensitive detector at the wider end of the cell. The flow-cell adequately compensates for a lens effect that has been discovered to be a substantial factor in electro-magnetic energy absorption studies on liquid streams. A light beam from the light source is passed through an elliptical aperture to render the beam substantially circular prior to entering the flow-cell.

REFERENCES:
patent: 3674373 (1972-07-01), Waters et al.
patent: 3792929 (1974-02-01), Alpert
patent: 4011451 (1977-03-01), Nelson
patent: 4276475 (1981-06-01), Nelson

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