The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2019
Filed:
Apr. 28, 2014
Maxell, Ltd., Kyoto, JP;
Maxell, Ltd., Kyoto, JP;
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.