Title:
画像表示装置及び移動体及び被走査面素子
Document Type and Number:
Japanese Patent JP6451827
Kind Code:
B2
Abstract:
To provide an image display device for reducing interference noise while maintaining brightness of two-dimensional images displayed by two dimensional scanning using a coherent light beam.SOLUTION: In an optical scanning device for a two-dimensional image display device, a coherent pixel display beam LC, which is intensity-modulated by an image signal, is two-dimensionally deflected by two-dimensional deflection means 6, and scanned surface elements 8 are two-dimensionally scanned by 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 a beam diameter of the pixel display beam LC. A fine convex lens for diffusing the pixel display beam has a fine convex lens structure in which fine convex lenses are arrayed in close contact with each other at a pitch close to a pixel pitch. In the fine convex lens structure, a radius of curvature r of a surface forming a boundary part with the neighboring fine convex lenses is smaller than wavelength λ of the pixel display beam.SELECTED DRAWING: Figure 1
Inventors:
Shin Inamoto
Kenichiro Saisho
Yasuhiro Sato
Watanabe Jun
Kenichiro Saisho
Yasuhiro Sato
Watanabe Jun
Application Number:
JP2017251563A
Publication Date:
January 16, 2019
Filing Date:
December 27, 2017
Export Citation:
Assignee:
株式会社リコー
International Classes:
G02B27/01; B60K35/00; G02B3/00; G02B5/02; G02B26/10; G02B27/48
Domestic Patent References:
| JP2012226303A | ||||
| JP7152071A | ||||
| JP57013436A | ||||
| JP2005141202A | ||||
| JP2007108400A |
Foreign References:
| WO2010116727A1 | ||||
| US20090128901 |
Attorney, Agent or Firm:
Shuichi Kudo