Four-channel anomaloscope

Details Four-channel anomaloscope Four-channel anomaloscope

1989-08-08

1990-10-30

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

350237, 350174, 362293, A61B 306

Patent

active

049664530

ABSTRACT:
A four-channel anomaloscope for detecting the color sense match of the blue cone function and the color weakness or blindness in red and green comprising a housing, optical elements, circuit control means, appropriate computer facilities and software programs wherein the optical elements comprise lighting bulbs, single wavelength interference type filters, 50/50 spectroscopes, a reflective mirror, and photodiodes. The present invention further relates to a method of making the brightnesses of both partitions of the bipartite field produced in the four-channel anomaloscope to coincide with each other.

REFERENCES:
patent: 3801188 (1974-04-01), Hunt et al.
patent: 3947099 (1976-03-01), Grolman et al.
patent: 4535394 (1985-08-01), Dugre
patent: 4765731 (1988-08-01), Williams
patent: 4798458 (1989-01-01), Gehrung et al.

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