General Scientific Corporation

Ardco, Inc.

Dynasig Corporation

Richard C Kim

Damon Floyd Kvamme

Richard A Mamelson

Charles T Willoughby

A compact Keplerian optical system includes a telescope having an image-rotator (Pechan roof prism pair), and an eyepiece and objective lens operative to form an intermediate image plane within the image-rotator, thereby decreasing the overall length. The objective lens optionally forms part of a replaceable cap, and plurality of replaceable caps may be provided, each with a different focal length to adjust for working distance. In the preferred embodiments, the eyepiece includes a singlet and a doublet lens to minimize eyestrain, and the objective lens includes a doublet and singlet field lens operative to increase depth of field and field of view. A practical implementation includes a pair of the telescopes, one for each eye of a user. Such a configuration may take the form of loupes mounted relative to eyeglass frames for surgical, medical or dental viewing applications.

Compact keplerian optical system

This present invention includes a method for capturing and transmitting data captured from a writing instrument in a secure manner. More specifically, the biometric information collected from the pen is coupled with at least one additional data point for encryption. The user initially uses the pen to create a signature which is converted into an encrypted reference value in accordance with the present invention. When authentication is desired, the user uses the same or similar pen to create a signature which again is converted into an encrypted data value. Thereafter, the encrypted reference value is compared to the encrypted data value to determine if the values substantially match. There is not need to retain the original reference signature, thereby enhancing the security of the overall system.

Method and apparatus for capturing and authenticating biometric information from a writing instrument

A commercial refrigerator cabinet is illuminated by fluorescent lamps which are located closely behind insulated glass doors for closing the cabinet. Each lamp is located behind a reflector and is at least partially enclosed by a clear plastic lens having multiple facets on its inner side. The reflector and the lens cause the light emitted from the lamp to reflect and refract in such a manner as to distribute the light substantially uniformly on products located at various distances from the lamp and to reduce glare in the immediate vicinity of the lamp.

Lighting system for commercial refrigerator doors

A telemicroscopic lens configuration for high quality optical imaging applications which provides high magnification of a work area with a wide field of view. The telemicroscopic lens configuration is a Galilean-type configuration having a positive-power objective lens and a negative-power eyepiece lens separated by an air space. The focal length of the objective lens and the air space distance are optimized to provide the magnification and overall effective focal length of the instrument. The focal length of the eyepiece lens is chosen so that the object being magnified appears in front of the viewer. Different lens materials are selected to minimize polychromatic aberrations. The shape of the objective lens, including radius of curvature and thickness of each lens element, is optimized to minimize monochromatic aberrations, which principally include spherical aberration and coma. The shape of the eyepiece lens, in conjunction with the shape of the objective lens, helps to further reduce monochromatic aberrations and increase the depth of field.

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Scottsdale, AZ, United States of America

Richard C Kim