Bell + Howell Company

Devar Inc.

Walter R Linke

Andor A Fleischman

Arthur R Cox

James B Funk, Jr

The pen comprises an elongated housing having a light aperture at one end. A plurality of light-emitting diodes is mounted in the housing, and means are provided for focusing the light from such diodes at the light aperture. In use, the pen is held against a coded label and moved therealong. Light from the light-emitting diodes strikes the coded information, so as to produce a light pattern. Lenses in the housing focus the reflected light onto a detector which produces electrical signals in accordance with the light pattern.

Optical light pen

A chromatically neutral viewfinder optical system of positive forward and rearward elements and including therebetween a substantially zero power doublet which neutralizes chromatic errors generated by the positive elements.

Viewfinder optics with zero power doublet

A lens system primarily for a copier is a plastic and glass lens design of reflex configuration enabling lower manufacturing cost with a higher degree of optical correction than a comparable all glass straight through design of similar optical characteristics. In the preferred embodiment, the plastic element is formed with aspheric surfaces.

Reflex copier lens

A lens system primarily for a copier is a reflex, plastic and glass lens design enabling lower manufacturing costs with a higher degree of optical correction than a comparable all glass straight through design of similar optical characteristics. In the preferred embodiment, selected of the plastic elements is formed with aspheric surfaces.

Growing community of inventors

Chicago, IL, United States of America

Walter R Linke