Apparatus for scanning a laser beam including means for focusing

Details Apparatus for scanning a laser beam including means for focusing Apparatus for scanning a laser beam including means for focusing

1981-06-30

1983-10-11

Henry, Jon W.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250236, 250237G, G02B 2717

Patent

active

044088264

ABSTRACT:
Apparatus for scanning a laser beam including a beam splitter for splitting a laser beam into a scale scanning beam and a read/write scanning beam, a modulator for applying information to the read/write scanning beam, lenses and mirrors, including a cylindrical lens for directing both beams onto the same facet of a rotating polygonal scanning mirror, and a lens for focusing the modulated beam to a spot on a scanned medium and for focusing the unmodulated beam through a scale onto a detector for providing timing pulses for the apparatus.

REFERENCES:
patent: 3573849 (1971-04-01), Herriott et al.
patent: 3750189 (1973-07-01), Fleischer
patent: 3865465 (1975-02-01), Tatuoka et al.
patent: 4350988 (1982-09-01), Masegi

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