Zoom lens device

Details Zoom lens device Zoom lens device

1991-01-07

1992-07-14

Ben, Loha

Optical: systems and elements

Lens

With variable magnification

359695, 359823, 35419512, G02B 1500

Patent

active

051308517

ABSTRACT:
A zoom lens device is disclosed which is ideal for use in a video camera. In the zoom lens device, a zoom ring is provided directly in the rear end of a cam barrel without using any connecting pins, and the zoom ring is exposed out from a fixed barrel so that it can be operated from externally. For this reason, there is eliminated the need for provision of an escape groove for the connecting pins in the fixed barrel and thus the angles of cam grooves can be increased up to a limit beyond which the cam grooves may interfere with each other. As a result of this, a zoom lens device which is compact and is of a high magnification can be realized.

REFERENCES:
patent: 3610733 (1971-10-01), Back
patent: 4596449 (1986-06-01), Iwata et al.
patent: 4865433 (1989-09-01), Okajima et al.

Affiliated with

Also associated with

Rating

Zoom lens 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 Zoom lens device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom lens device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-340141