Optical: systems and elements – Lens – Including a nonspherical surface
Reexamination Certificate
2005-07-19
2005-07-19
Epps, Georgia (Department: 2873)
Optical: systems and elements
Lens
Including a nonspherical surface
C359S717000, C359S819000, C369S112240
Reexamination Certificate
active
06919996
ABSTRACT:
An objective lens for use in an optical pickup apparatus, comprises a first lens molded with a plastic and having an optically functional section, flange section provided around the periphery of the optically functional section, and a first contacting section provided on the flange section; and a second lens molded with a plastic, located opposite to the first lens and having an optically functional section, a flange section provided around the periphery of the optically functional section, and a second contacting section provided on the flange section. The first lens and the second lens are joined in such a way that the first contacting section and the second contacting section are brought in contact with each other.
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Arai Norikazu
Atarashi Yuichi
Eguro Yayol
Hattori Hiroyuki
Honda Koji
Hasan M.
Konica Corporation
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