Optical scanning systems with image curvature correcting means

Details Optical scanning systems with image curvature correcting means Optical scanning systems with image curvature correcting means

Filed on

1975-05-29

Date issued

1977-04-26

Examiner

Corbin, John K.

Patent Class

Radiant energy

SubClass

Ionic separation or analysis

SubSubClass

Static field-type ion path-bending selecting means

Other Related Categories

250236, G02B 2717

Type

Patent

Status

active

Patent number

040198049

Description

ABSTRACT:
In an optical scanning system having a rotary scanner with multiple reflectors, which scanner images a light-responsive detector and moves that image repeatedly across the flat image field of an objective to generate a scanning raster, an optical corrector is mounted in the beam imaging the detector to correct for the fact that the detector image moves in a curved path. The optical corrector has a stepped surface such as to adjust the detector image incrementally during a scan, in the direction normal to the plane of the image field of the objective, so as to make the detector image motion substantially parallel to said image field.

REFERENCES:
patent: 1972019 (1934-08-01), Kanolt
patent: 2952180 (1960-10-01), Estes
patent: 3277772 (1966-10-01), Atwood
patent: 3647956 (1972-03-01), Buck et al.
patent: 3778129 (1973-12-01), Wildhaber
patent: 3802759 (1974-04-01), Andersson

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