| 摘要 |
A light control device (1) is provided with a light source (10), a prism (20), a spatial light modulator (30), a drive unit (31), a control unit (32), a lens (41), an aperture (42), and a lens (43). The spatial light modulator (30) is of a phase modulation type, comprises a plurality of pixels which are two-dimensionally arranged, is capable of phase modulation in the range of 4p or more in each of the plurality of pixels, and presents a phase pattern for modulating the phase of light in each of the plurality of pixels. The phase pattern is configured by superimposing a blazed grating pattern for light diffraction and a phase pattern having a predetermined phase modulation distribution, and the phase modulation range thereof is 2p or more. |
