Vision tester with color corrected illuminating system

Details Vision tester with color corrected illuminating system Vision tester with color corrected illuminating system

1988-04-13

1989-07-04

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Support

351213, 351233, A61B 302

Patent

active

048446076

ABSTRACT:
A color-corrected vision testing apparatus and method are provided, such having a blue filtered incandescent illuminating source in a light-occluding housing for high contrast translumination of test patterns also in said housing to obtain improved testing of acuity levels.

REFERENCES:
patent: 4043646 (1977-08-01), Heine
patent: 4155632 (1979-05-01), Wolbarsht
patent: 4180323 (1979-12-01), Persson
patent: 4452515 (1984-06-01), Lewis

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