发明名称 |
Surface illuminant device |
摘要 |
A surface light source device capable of obtaining uniform and high brightness emitted light is disclosed. The surface light source device can include a light source (11) that emits light; a light guiding plate (12) that guides light from the light source that is incident on a rear surface side thereof or a side surface side thereof and emits the light from a front surface side thereof; and a diffusion plate (14) disposed on the front surface side of the light guiding plate that diffuses the incident light from the light guiding plate to a front surface side thereof. The diffusion plate can be made from nonwoven fabric with an areal weight of not less than 0 g/m2 and not more than 40 g/m2. |
申请公布号 |
US9423549(B2) |
申请公布日期 |
2016.08.23 |
申请号 |
US201214233569 |
申请日期 |
2012.07.19 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
Toyooka Kazuhiko;Yamamuro Masaki;Matsuda Hiroki |
分类号 |
G02B5/02;F21V8/00;G02F1/1335 |
主分类号 |
G02B5/02 |
代理机构 |
|
代理人 |
Fulton Lisa P. |
主权项 |
1. A surface light source device, comprising:
a light source that emits light; a light guiding plate that guides light from the light source that is incident on a rear surface side or a side surface side and emits the light from a front surface side; a diffusion plate disposed on the front surface side of the light guiding plate that diffuses the incident light from the light guiding plate to a front surface side; and a reflecting polarizing plate disposed on the front surface side of the diffusion plate; wherein the diffusion plate is made from nonwoven fabric with an areal weight of not less than 10 g/m2 and not more than 40 g/m2, and the diffusion plate is achromatic. |
地址 |
St. Paul MN US |