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#5
06-26-2010, 11:28 PM
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Did this design use UV phosphor stripes as the index reference?
I have never seen one in operation... how good is the contrast?... it would seem that some minimum beam current must be landing on the screen at all times in order for the photocell to detect the index reference stripes, wouldn't that wash out the back level somewhat? just curious, jr Last edited by jr_tech; 06-27-2010 at 01:45 PM. 
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