1979-06-27
1981-02-24
Smith, Alfred E.
350424, G02B 2717, G02B 1500
Patent
active
042524016
ABSTRACT:
A parallel optical scanning device, of the type comprising two prisms of small apex angle which rotate in opposite directions at the same speed about a common axis, wherein each of the prisms is composed of two coaxial parts secured to each other and arranged to produce different beam deviations.
REFERENCES:
patent: 3010366 (1961-11-01), Crawford
patent: 3083611 (1963-04-01), Ziolkowski et al.
Howell Janice A.
Smith Alfred E.
Societe Anonyme de Telecommunications
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