Invention Grant
- Patent Title: Optical waveguide for touch panel, touch panel using the optical waveguide and manufacturing method of the optical waveguide
- Patent Title (中): 用于触摸面板的光波导，使用光波导的触摸面板和光波导的制造方法
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Application No.: US13097533Application Date: 2011-04-29
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Publication No.: US08369663B2Publication Date: 2013-02-05
- Inventor: Noriyuki Juni , Yusuke Shimizu
- Applicant: Noriyuki Juni , Yusuke Shimizu
- Applicant Address: JP Ibaraki-shi, Osaka
- Assignee: Nitto Denko Corporation
- Current Assignee: Nitto Denko Corporation
- Current Assignee Address: JP Ibaraki-shi, Osaka
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2007-332571 20071225
- Main IPC: G02B6/32
- IPC: G02B6/32 ; G06F3/041
Abstract:
An optical waveguide for a touch panel which eliminates the need for alignment between the optical waveguide and a lens and which achieves the appropriate emission and reception of light beams, to provide a touch panel using the optical waveguide, and to provide a manufacturing method of the optical waveguide for a touch panel. A total distance (L) which is the sum of a distance from the center of curvature of the first lens portion 30 to the light reflecting surface 60 and a distance from the light reflecting surface 60 to the tip of the second lens portion 50, and the radius (R) of curvature of the second lens portion 50 satisfy the following condition (A): (L/3)−0.5
Public/Granted literature
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