Method and apparatus for producing optical displays
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United States of America Patent
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Feb 26, 1985
Grant Date -
N/A
app pub date -
Dec 4, 1981
filing date -
Dec 4, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus are disclosed for creating optical displays from a real optical scene with an optical feedback circuit projecting a parameter of the original scene for combination with the original scene itself or an image thereof. The feedback circuit may influence the parametric image in many ways to influence the combined optical display. For instance, the parametric image may be a negative of the real scene to produce a null combined display showing motion where the parametric image is time delayed or the parametric image may be defocused to produce a combined display with edge enhancement. The feedback circuit may project a vertical parametric image to create fixed relation combined displays or the feedback circuit can project real parametric images continuously to create a combined display which changes progressively as a function of the relation between original and parametric images. The method and apparatus may be used for a variety of purposes such as motion detection in security devices or live sperm counting or real image enhancement in biological microscopy.
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