PROJECTION DEVICE, PROJECTION CONTROL METHOD, AND RECORDING MEDIUM

WIPO Patent Application WO/2023/026521

A1

In order to project projection light not including higher-order light of a desired image toward a wide range although having a compact configuration, this projection device comprises: a light source; a spatial light modulator that has a modulation unit in which a plurality of modulation regions to be irradiated with light emitted from the light source are set, and modulates the phase of the irradiated light in each of the plurality of modulation regions set in the modulation unit; a partition wall that is disposed at a boundary between the plurality of modulation regions and separates modulated light modulated in each of the plurality of modulation regions; a control unit that sets a pattern for forming the desired image in each of the plurality of modulation regions set in the modulation unit of the spatial light modulator, and controls the light source such that the modulation unit in which the pattern is set is irradiated with the light; and a curved mirror that has a curved reflection surface to be irradiated with the modulated light modulated in each of the plurality of modulation regions set in the modulation unit of the spatial light modulator, reflects the modulated light by the reflection surface, and projects projection light the projection angle of which is widened according to the curvature of the reflection surface.

OKUMURA FUJIO (JP)

PCT/JP2022/008233

March 02, 2023

February 28, 2022

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NEC PLATFORMS LTD (JP)

G02F1/01; G03B21/14; G03B21/00

WO2018056198A1	2018-03-29
WO2019026167A1	2019-02-07

JP2015087596A	2015-05-07
KR20190127333A	2019-11-13

KITAJIMA Hiroshi et al. (JP)

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