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:
Sep. 01, 2026
Filed:
Apr. 26, 2021
Screen Holdings Co., Ltd., Kyoto, JP;
Yuki Ashida, Kyoto, JP;
SCREEN Holdings Co., Ltd., Kyoto, JP;
Abstract
The spatial phase modulation element is a so-called grating light valve for modulating the phase of light by displacing the ribbons. If the measurement light beam Lm (measurement light) is incident on such a spatial phase modulation element, the measurement light beam Lm is emitted in a direction corresponding to the displacement mode of the ribbons. That is, an emission direction of the measurement light beam Lm can be changed, and the measurement light beam Lm can be scanned across the object J by controlling the displacement mode of the ribbons. At this time, the measurement light beam Lm phase-modulated by the spatial phase modulation element is projected to the object J after being shaped into a linear beam. That is, the linear measurement light beam Lm is scanned across the object J.