基本信息:
- 专利标题: 导光板、表面光源装置和透射型图像显示装置
- 专利标题(英):Light guide plate, surface light source device, and transmission type image display device
- 申请号:CN201220320665.7 申请日:2012-07-03
- 公开(公告)号:CN202720354U 公开(公告)日:2013-02-06
- 发明人: 川口裕次郎
- 申请人: 住友化学株式会社
- 申请人地址: 日本东京都
- 专利权人: 住友化学株式会社
- 当前专利权人: 住友化学株式会社
- 当前专利权人地址: 日本东京都
- 代理机构: 北京集佳知识产权代理有限公司
- 代理人: 顾晋伟; 王春伟
- 优先权: 2011-149159 2011.07.05 JP
- 主分类号: G02B6/00
- IPC分类号: G02B6/00 ; F21S8/00 ; F21V8/00 ; G02F1/13357
The utility model provides a light guide plate, a surface light source device, and a transmission type image display device. The light guide plate (40) receives light which incidents on the light guide plate (40) through a light incoming surface (40a) and enables the light to be emitted from a light emitting surface (40b). The light guide plate (40) has a plurality of lens units (43) on the light emitting surface (40b), wherein each lens unit (43) extends from the light incoming surface (40a) to a surface (41d) opposite to the light incoming surface (40a). The plurality of lens units are arranged in a row in a direction orthogonal to the extending direction. In a cross-section orthogonal to the extending direction in the lens unit, letting the u-axis be an axis passing both ends of the lens unit, the v-axis be an axis orthogonal to the u-axis while passing the center between both ends (43a) on the u-axis, and wa be the length of the lens unit along the u-axis, the form of the lens unit is represented by v(u) satisfying 0.95v0(u)<=v(u)<=1.05v0(u) within the range of -0.475wa<=u<=0.475wa, wherein v0(u) satisfies the expression (2) which is described in the description, and ha and ka are constants satisfying 0.4<=ha/wa<=0.7, -0.75<=ka< 0, and 1<=ka+4*(ha/wa)<=2.
IPC结构图谱:
G | 物理 |
--G02 | 光学 |
----G02B | 光学元件、系统或仪器 |
------G02B6/00 | 光导;包含光导和其他光学元件(如耦合器)的装置的结构零部件 |