Device for determining focal position of zoom lens

Details Device for determining focal position of zoom lens Device for determining focal position of zoom lens

1999-09-14

2000-09-19

Mai, Huy

Optical: systems and elements

Lens

With variable magnification

359703, 359823, 359827, G02B 1514

Patent

active

061221139

ABSTRACT:
A zoom lens is formed of a fixed cylinder, an outer movable cylinder, an inner movable cylinder, and a guide plate disposed between the fixed cylinder and the outer movable cylinder. The outer movable cylinder is movably fitted into the fixed cylinder and is provided at one end thereof with a first locating point, a second locating point, and a third locating point. The guide plate displaces along with the outer movable cylinder and has a reference portion, which is aligned with the first locating point, the second locating point, and the third locating point to determine the focal position of the lens.

REFERENCES:
patent: 5581411 (1996-12-01), Nomura et al.
patent: 5721645 (1998-02-01), Iwasaki et al.
patent: 5966249 (1999-10-01), Aoki

Affiliated with

Also associated with

Rating

Device for determining focal position of zoom lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for determining focal position of zoom lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for determining focal position of zoom lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1079304