Abstract: Provided is a spatial light modulation device which can be driven at a frame rate higher than that of a two-dimensional light modulator. A spatial light modulation device (10) includes a two-dimensional light modulator (11) including a cell group (C) in which cells are arranged in a matrix manner, and a scanning optical system (cylindrical lens 14, scanning mirror 16, objective lens 17). The scanning optical system repeatedly carries out a first conversion step (S11) of converting a two-dimensional beam (L21) into a one-dimensional beam (L11), a modulation step (S12) of generating a spatially modulated one-dimensional beam (L12), and a second conversion step (S13) of converting the modulated one-dimensional beam (L12) into a two-dimensional beam (L22), while changing a column of the cell group (C) which the one-dimensional beam (L11) is caused to enter in the modulation step (S12).

Abstract: Disclosed is a three-dimensional radar apparatus comprising a radar transmitting/receiving unit, a three-dimensional polygon-generating unit, and a three-dimensional graphics unit, wherein a radar transmitter/receiver outputs signals concerning orientation information, distance information, and reception intensity information on the basis of a radio wave reflected from a target, and a scan converter is used to convert the signals concerning the orientation information, the distance information, and the reception intensity information into two-dimensional radar image data composed of two-dimensional rectangular coordinates and brightness information of each of picture elements. The two-dimensional radar image data is also inputted into the three-dimensional polygon-generating unit to perform polygon-generating processing on the basis of the two-dimensional rectangular coordinates and the brightness information of each of the picture elements.