Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2011-06-07
2011-06-07
Petkovsek, Daniel (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
C385S032000, C385S035000, C385S047000, C385S131000, C345S176000
Reexamination Certificate
active
07957615
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 portion30to the light reflecting surface60and a distance from the light reflecting surface60to the tip of the second lens portion50, and the radius (R) of curvature of the second lens portion50satisfy the following condition (A):in-line-formulae description="In-line Formulae" end="lead"?(L/3)−0.5<R<(L/3)+0.5 (A)in-line-formulae description="In-line Formulae" end="tail"?where L in mm, and R in mm.
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Juni Noriyuki
Shimizu Yusuke
Nitto Denko Corporation
Petkovsek Daniel
Westerman Hattori Daniels & Adrian LLP
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