Telesensory Corporation

Other

Thumbscan, Inc.

W Andrew Morrison

Edward J Cornelius, Iii

William P Cargile

Neil J Goldberg

T Lee Dahlmann

Rob E Savoie

Timothy S Couture

John A Lawson

Kin Shan Lau

Video magnifier for assisting persons with vision impairment

A zoom lens is described which is quite simple and yet provides a wide (5:1) zoom range. The lens consists of a front focusing negative lens which provides a stationary virtual image for two rear zooming lens groups. These two zooming groups are positive and reimage the object at a camera pickup device. Such zooming groups are of substantially equal focal length and bear equally in the magnification change. The invention includes a magnifier which utilizes the zoom lens and has the mechanical aspects necessary to provide the needed lens motions.

Zoom lens and magnifier utilizing the same

Key pad

A test probe for effecting temporary electrical connection to circuit terminals of miniature integrated circuits or like elements with small inter-terminal spacings. The probe has an insulative tip having a cross-sectional dimension smaller than the space between adjacent terminals. In an axially extending groove in the tip is a stiff wire, and a mechanism is provided for controllably moving the wire out of the groove after the tip has been inserted between two terminals. When the wire moves out of the groove, it contacts one of the electric terminals and wedges the insulative tip against the adjacent terminal so as to retain the probe in place.

Wedge action electrical test probe

Growing community of inventors

Saratoga, CA, United States of America

W Andrew Morrison