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:
Aug. 14, 2018
Filed:
Jul. 14, 2015
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Makio Kurashige, Tokyo, JP;
Kazutoshi Ishida, Tokyo, JP;
Tomoe Takanokura, Tokyo, JP;
Yasuyuki Oyagi, Tokyo, JP;
DAI NIPPON PRINTING CO., LTD., Tokyo, JP;
Abstract
A laser beam (L) is reflected by a light beam scanning device () and irradiated onto a hologram recording medium (). On the hologram recording medium (), an image () of a linear scatter body is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device () bends the laser beam (L) at the scanning origin (B) and irradiates the laser beam onto the hologram recording medium (). At this time, by changing a bending mode of the laser beam with time, an irradiation position of the bent laser beam (L) on the hologram recording medium () is changed with time. Diffracted light (L) from the hologram recording medium () produces a reproduction image () of the linear scatter body on a light receiving surface (R) of the stage. When an object is placed on the light receiving surface (R), a line pattern is projected by hologram reproduction light, so that the projected image is captured and a three-dimensional shape of the object is measured.