Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2011-03-15
2011-03-15
Petkovsek, Daniel (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
C385S131000, C345S175000, C345S176000
Reexamination Certificate
active
07907805
ABSTRACT:
An optical waveguide for a touch panel which eliminates the need for alignment between the optical waveguide and a lens device, and to provide a touch panel using the same. An optical waveguide for a touch panel is provided in which end surfaces of cores3A for emitting light beams are positioned in a first side portion of a display screen of a display, and end surfaces of cores3B for receiving the light beams are positioned in a second side portion of the display screen of the display. Edge portions of an over cladding layer4for covering the end surfaces of the cores3A for emitting the light beams and the end surfaces of the cores3B for receiving the light beams are formed as lens portions40A,40B having spherical lens surfaces41A,41B.
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Nitto Denko Corporation
Petkovsek Daniel
Westerman Hattori Daniels & Adrian LLP
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