Optical component and imaging device using same
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United States of America Patent
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Mar 12, 2019
Grant Date -
Feb 16, 2017
app pub date -
Apr 28, 2014
filing date -
Apr 28, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
To provide an optical component (phase plate) capable of acquiring an image of a deep depth of field or focal position, and an imaging device using it. What is provided is the optical component that includes multiple ring zones demarcated by multiple concentric circles, and is configured to be rotationally symmetric to a center of the concentric circles. Cross sections of the ring zones on a plane being parallel to a direction perpendicular to the concentric circles and including the center have concave or convex shapes. Each of the concave or convex shapes of the cross sections of the ring zones is asymmetric to a centerline of a width of each of the ring zones in a radial direction of the concentric circles.
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