Optical sensor

Details Optical sensor Optical sensor

1989-10-18

1991-06-11

Arnold, Bruce Y.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

350442, 350502, 250216, G02B 1700

Patent

active

050227254

ABSTRACT:
An optical sensor comprising a light detector, a converging lens located between the light detector and a light source, the light rays from which are detected by the light detector, and a light shielding means provided on a part of the converging lens, the shielding means shielding light rays emitted from the light source, thereby reducing dependence of the amount of light rays to be detected upon angles of incidence with which the light rays enter into the converging lens of the optical sensor.

REFERENCES:
patent: 3825747 (1974-07-01), Thomson
patent: 4055761 (1977-10-01), Shimomura
patent: 4554448 (1985-11-01), Sillitto
patent: 4880974 (1989-11-01), Yamakawa

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