基本信息:
- 专利标题： 广角成像定向背光源
- 专利标题（英）：Wide angle imaging directional backlights
- 申请号：CN201380026053.4 申请日：2013-05-15
- 公开(公告)号：CN104303085A 公开(公告)日：2015-01-21
- 发明人： M·G·鲁宾逊 , G·J·伍德盖特 , J·哈罗德 , M·H·舒克
- 申请人： 瑞尔D股份有限公司
- 申请人地址： 美国加利福尼亚州
- 专利权人： 瑞尔D股份有限公司
- 当前专利权人： 瑞尔D斯帕克有限责任公司
- 当前专利权人地址： 美国加利福尼亚州
- 代理机构： 北京嘉和天工知识产权代理事务所
- 代理人： 严慎
- 优先权： 61/648,840 2012.05.18 US; 61/649,054 2012.05.18 US; 61/649,050 2012.05.18 US; 61/727,421 2012.11.16 US; 13/839,552 2013.03.15 US
- 国际申请： PCT/US2013/041235 2013.05.15
- 国际公布： WO2013/173513 EN 2013.11.21
- 进入国家日期： 2014-11-18
- 主分类号： G02B6/10
- IPC分类号： G02B6/10 ; G02F1/13357
An imaging directional backlight apparatus includes a waveguide and a light source array, for providing large area directed illumination from localized light sources. The waveguide may include a stepped structure, in which the steps may further include extraction structure features optically hidden to guided light propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the structure features to provide discrete illumination beams exiting from the top surface of the waveguide. Viewing windows are formed through imaging individual light sources and hence define the relative positions of system elements and ray paths. The uncorrected system creates non-illuminated void portions when viewed off-axis, preventing uniform wide angle 2D illumination modes. The system may be corrected to remove this non uniformity at wide angles through the introduction of additional sources away from the system's object plane, additional imaging surfaces, and/or by altering ray paths.
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 |
| --------G02B6/10 | .光波导式的 |