Variable focal length camera with focus adjusting device

Details Variable focal length camera with focus adjusting device Variable focal length camera with focus adjusting device

1990-08-31

1992-02-04

Hix, L. T.

G03B 118

Patent

active

050863126

ABSTRACT:
A variable focal length camera having at least one auxiliary lens system which is inserted into or withdrawn from the optical axis of a main lens system. A lens holder holding the auxiliary lens system is swingably mounted on a shaft extending in the direction of the optical axis, and moves forward and rearward along the shaft for focus adjustment. In order to cancel the component of a force in the direction of the optical axis exerted by a tool by which a focus adjusting device is operated, the shaft is arranged to be motionless in the direction of the optical axis. According to a preferred embodiment, on the intermediate portion of the shaft, there is formed a thread meshing with a base portion of the lens holder so that the position of the lens holder is adjusted through rotation of the shaft, and after this lens position adjustment the base portion is fixed to the shaft.

REFERENCES:
patent: 4307950 (1981-12-01), Suzuki et al.
patent: 4725864 (1988-02-01), Ogawa et al.
patent: 4789875 (1988-12-01), Wakabayashi et al.

Affiliated with

Also associated with

Rating

Variable focal length camera with focus adjusting device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable focal length camera with focus adjusting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable focal length camera with focus adjusting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-349665