Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2006-07-18
2006-07-18
Song, Sarah (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S014000, C385S031000
Reexamination Certificate
active
07079732
ABSTRACT:
An optical device guides propagating light to exit from a desired side surface of a substrate while maintaining sufficient power within a limited size of the substrate and which facilitates adjustment of a mount position of a light-receiving element by increasing allowable tolerance of the mount position of the light-receiving element. The optical device has a substrate, a light propagating direction path formed in the substrate, and a reflection groove formed in an output-side of said light propagating direction path in the substrate. A side wall of the reflection groove is formed to become a convex reflection surface in relation to light which enters from the light propagating direction path, and the light output from the light propagating direction path undergoes total reflection on a side wall forming the reflection surface and lets the reflected light exit from a predetermined side surface of the substrate while enlarging an image.
REFERENCES:
patent: 5418765 (1995-05-01), Misawa et al.
patent: 1186936 (2002-03-01), None
patent: 2002-182050 (2002-06-01), None
Doi Masaharu
Itou Tomoyuki
Maruyama Shinji
Omori Yasuhiro
Takahashi Yoshihiro
Fujitsu Limited
Song Sarah
Staas & Halsey , LLP
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