Zoom lens assembly having a mechanical lens system mounting mech

Details Zoom lens assembly having a mechanical lens system mounting mech Zoom lens assembly having a mechanical lens system mounting mech

1982-11-10

1984-05-15

Henry, Jon W.

G02B 710

Patent

active

044484968

ABSTRACT:
A zoom lens assembly having a mechanical mounting system for the lens components thereof wherein zooming, focusing and closeup operations may be selectively performed by operation of a single actuator member. A lens barrel is provided within which a variator lens and a compensator lens are movably fitted with an intermediate sleeve being fitted on the barrel member and arranged to move axially in unison with the actuator member and to be rotatable relative thereto, a drive connection being provided between the actuator member and the variator lens holder member with motion transmission occurring between the intermediate sleeve and the compensator lens holder member. Focusing operation is effected by rotation of the actuator member and by axial movement of the actuator member, the compensator lens and the variator lens are axially moved with a compensation effect being maintained for the optical system by relative movement between the variator lens and the compensator lens.

REFERENCES:
patent: 4089590 (1978-05-01), Sakata

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