Method and apparatus for testing flicker fusion frequency
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United States of America Patent
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Apr 13, 1982
Grant Date -
N/A
app pub date -
Apr 18, 1980
filing date -
Apr 18, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for testing temporal vision including a target light produced on a portion of a viewing area. A boundary is provided between the target light and a background light, such being produced on substantially all of the viewing area. A first oscillator switches the target light on and off while a second oscillator is available to switch the background light on and off. A frequency control is provided to vary the rate of switching of the target light.
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