1988-01-21
1989-08-29
Arnold, Bruce Y.
354402, G02B 711
Patent
active
048611468
ABSTRACT:
A variable focal lens device having an optical system comprising a variable power lens group and a focusing lens group disposed on one identical optical axis in which a deviation of a focusing position is resulted with an identical object when the focusing lens group is set at a predetermined focusing position from a nearest position to an infinite position on the optical axis corresponding too an object distance from a nearest distance to an infinite distance and then moving the variable power lens group along the optical axis thereby renewing an entire system focal length of the variable power optical system from a first focal length to a second focal length.
REFERENCES:
patent: 4161756 (1979-07-01), Thomas
patent: 4705380 (1987-11-01), Yamamoto et al.
Hatase Takayuki
Ohno Yoshimi
Arnold Bruce Y.
Ben Loha
Ricoh & Company, Ltd.
LandOfFree
Variable focal 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 Variable focal lens device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable focal lens device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2233877