TWO-DIMENSIONAL IMAGE DISPLAY DEVICE, OPTICAL SCANNING DEVICE FOR TWO-DIMENSIONAL IMAGE DISPLAY DEVICE, SCANNED SURFACE ELEMENT AND MOVABLE BODY

摘要

PROBLEM TO BE SOLVED: To reduce interference noises while maintaining the brightness of two-dimensional images displayed by performing two dimensional scanning using a coherent light beam.SOLUTION: In the optical scanning device for two-dimensional image display device, a coherent pixel display beam LC, the brightness of which is modulated according to an image signal, is two-dimensionally deflected by a two-dimensional deflection unit 6, and surface elements 8 are two-dimensionally scanned using the deflected pixel display beam to form a two-dimensional image on the scanned surface elements. The scanned surface element 8 is larger than the beam diameter of the pixel display beam LC. The fine convex lens for diffusing the pixel display beam has a hexagonal shape and has a fine convex lens structure in which the fine convex lenses are arranged in a honeycomb shape being in close contact with each other at a pitch close to the pixel pitch. The aspect ratio: SY/SX which is a ratio between an effective pixel pitch: SX in an X direction and an effective pixel pitch: SY in a Y direction in the arrangement of honeycomb shape is larger than 1.