Lighting and detection system

Details Lighting and detection system Lighting and detection system

1989-12-01

1992-04-07

Rosenberger, Richard A.

Optics: measuring and testing

By configuration comparison

With photosensitive film or plate

356446, 362 32, 362 31, G01B 1102, F21V 704

Patent

active

051022273

ABSTRACT:
A backlighting system is comprised of a light source, a sensing portion and an imaging portion. The light source may be a linear backlight that has few hot spots and provides uniform lighting oriented primarily in a single dimension. Alternatively it may be an area backlight that provides backlighting in a uniform manner across two-dimensions. Furthermore, a line light source may be provided that provides a relatively large line source of light oriented almost exclusively in a single dimension. The imaging portion of the machine vision system preferably includes an element for homogenizing the received image onto the imaging array. The homogenization element may adopt either a dispersing approach or a condensing approach.

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