Photocopying – Contact printing – Light boxes
Patent
1994-10-31
1996-07-23
Hayes, Monroe H.
Photocopying
Contact printing
Light boxes
355 67, 355 70, 355 71, G03B 2900
Patent
active
055394850
ABSTRACT:
An illumination device for illuminating an object to be observed, by a machine vision camera of the like for example, with a continuous diffuse wide angle light which is supplied both along the viewing axis of the machine vision camera and off axis. The diffuser of the present invention is tilted with respect to the observation axis so that the diffuser is not viewable by the object to be observed. This provides better uniformity of the light which illuminates the object. A second diffuser may be utilized to provide illumination of the object with light of reduced intensity.
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