发明名称 |
OPTICAL SCAN DEVICE, ILLUMINATION DEVICE, PROJECTION DEVICE, AND OPTICAL ELEMENT |
摘要 |
An illumination device includes a diffusion member having an anisotropic diffusion surface, a rotary shaft member configured to rotate the anisotropic diffusion surface while a coherent light beam from a light source is illuminated on the anisotropic diffusion surface, and an optical device that further diffuses a coherent light beam diffused on the anisotropic diffusion surface, wherein the coherent light beam diffused on the anisotropic diffusion surface is diffused in a form of line and the diffused coherent light beam in the form of line is configured to move to draw a locus of rotation in one direction in accordance with the rotation of the anisotropic diffusion surface. |
申请公布号 |
EP3081980(A1) |
申请公布日期 |
2016.10.19 |
申请号 |
EP20140869011 |
申请日期 |
2014.12.10 |
申请人 |
DAI NIPPON PRINTING CO., LTD. |
发明人 |
KURASHIGE MAKIO |
分类号 |
G02B27/48;G02B19/00;G03B21/14 |
主分类号 |
G02B27/48 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|