Optical waveguides – With optical coupler
Reexamination Certificate
2005-03-08
2005-03-08
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
With optical coupler
C385S039000, C385S116000, C385S119000, C372S006000, C359S027000, C359S855000, C353S031000
Reexamination Certificate
active
06865309
ABSTRACT:
An optical coupling device, a method of producing the same, and an optical apparatus using the same. A light transmitting medium of the optical coupling device is made of optical fibers to transmit the light. Three RGB laser beams can be compounded by forming one output end after heating one end of the optical fibers. Input ends of the optical fibers each have a lens to collimate each laser beam. A collimating lens installed at an output end of the optical fibers changes the compounded laser beam to a parallel ray. The optical coupling device made of the optical fibers can be applied to an image reproducing apparatus such as a projector and a projection TV. Especially, when the optical coupling device using the optical fibers is applied to an image reproducing apparatus having a DMD (digital micro-mirror device), the size of the image reproducing apparatus can be reduced and the quality of the image reproduced is improved.
REFERENCES:
patent: 5700076 (1997-12-01), Minich et al.
patent: 6426781 (2002-07-01), Lee
patent: 6437816 (2002-08-01), Fujita et al.
patent: 6636339 (2003-10-01), Lee
Petkovsek Daniel
Samsung Electronics Co,. Ltd.
Ullah Akm Enayet
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