Patents Represented by Attorney Willaim L. Botjer

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  • Optical imaging system having an electronically variable focal length and optical image sensor provided with such a system
    Patent number: 4927241
    Abstract: An imaging system having an electronically variable focal length is obtained by arranging, one after the other, a lens system (10) different sectors of which have different focal lengths and a liquid crystal diaphragm (20). By selecting sectors of the lens system with the aid of the diaphragm, an object (30) can be sharply imaged also at different object lengths in an image plane (40).
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: May 22, 1990
    Assignee: U.S. Philips Corp.
    Inventor: Karel E. Kuijk