Apparatus for the pointwise scanning of an information surface

Details Apparatus for the pointwise scanning of an information surface Apparatus for the pointwise scanning of an information surface

1978-07-17

1980-12-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

1791001G, G01J 120

Patent

active

042425794

ABSTRACT:
An apparatus is described for the pointwise scanning of an information surface. By arranging an observation objective system asymmetrically relative to a zero-order subbeam of the radiation coming from the information surface, and by utilizing a detector whose dimension in the scanning direction is small, the resolution can be increased.

REFERENCES:
patent: 4006293 (1977-02-01), Bouwhuis et al.
patent: 4051527 (1977-09-01), Braat

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