Title:
AUTOMATIC IRIS ADAPTIVE COMPACT ZOOM LENS
Document Type and Number:
Japanese Patent JP3461130
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To drastically miniaturize a zoom lens.
SOLUTION: A front lens group 1, a variator group 2, a fixed master group 3 and a moving master group B are arranged in order, and an iris 5 is provided at a fixed position adjacent to the master group 3 between the variator group 2 and the master group 3, so that lens constitution where a light beam going toward the peripheral part of a subject image forming surface formed on an image sensor 24 provided at the poststage of the moving master B does not pass through the center of the iris 5 in a specified zoom area is obtained. Then, the zoom lens is equipped with a means for controlling the iris 5 so as not to intercept all the light beams by the iris 5 when the light beams do not pass through the center of the iris 5.
More Like This:
| JP4415782 | Imaging device |
| JP2011209468 | DRIVE MODULE, ELECTRONIC DEVICE AND DRIVE MODULE CONTROL METHOD |
| JP2008172613 | IMAGING APPARATUS AND MANAGEMENT METHOD |
Inventors:
Kazuo Kimura
Application Number:
JP31877698A
Publication Date:
October 27, 2003
Filing Date:
November 10, 1998
Export Citation:
Assignee:
Victor Company of Japan Ltd.
International Classes:
H04N5/225; G02B7/10; G03B7/095; G03B9/02; G03B19/02; H04N5/235; (IPC1-7): G02B7/10; G03B7/095; G03B9/02; G03B19/02; H04N5/225; H04N5/235
Domestic Patent References:
| JP6370218A | ||||
| JP384527A | ||||
| JP7253609A | ||||
| JP9197272A | ||||
| JP1048696A | ||||
| JP1042189A |
Previous Patent: RADIO COMMUNICATION EQUIPMENT AND RADIO COMMUNICATION METHOD
Next Patent: CONTROLLER FOR HOT WATER SUPPLY APPARATUS
Next Patent: CONTROLLER FOR HOT WATER SUPPLY APPARATUS