Etching a substrate: processes – Forming or treating optical article
Reexamination Certificate
2008-07-15
2008-07-15
Culbert, Roberts (Department: 1792)
Etching a substrate: processes
Forming or treating optical article
C264S001250
Reexamination Certificate
active
10803921
ABSTRACT:
Provided are a stamper fabricated by using an embossing master and a focusing grating coupler fabricated by using the stamper, which is applicable to a subminiature pickup head for a mobile optic disk, whereby it is possible to reduce a weight and a volume of the pickup head with a simple process and low cost and to apply for mass production.
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patent: 4779259 (1988-10-01), Kono et al.
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patent: 6285813 (2001-09-01), Schultz et al.
patent: 2000348393 (2000-12-01), None
Shogo Ura, et al.; “An Integrated-Optic Disc Pickup Device”; Journal of Lightwave Technology; vol. LT-4, No. 7; Jul. 1986; pp. 913-918.
Stephen Sheard, et al.; “Focusing waveguide grating coupler using a diffractive doublet”; Applied Optics; vol. 36, No. 19; Jul. 1, 1997; pp. 4349-4353.
Paek Mun Cheol
Park Yong Woo
Pyo Hyeon Bong
Ryu Ho Jun
Suh Dong Woo
Electronics and Telecommunications Research Institute
Lowe Hauptman & Ham & Berner, LLP
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