Invention Grant
- Patent Title: Optical element and optical pickup device
- Patent Title (中): 光学元件和光学拾取装置
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Application No.: US11050151Application Date: 2005-02-04
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Publication No.: US07682676B2Publication Date: 2010-03-23
- Inventor: Setsuo Tokuhiro , Tatsuo Ohta
- Applicant: Setsuo Tokuhiro , Tatsuo Ohta
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta Opto, Inc.
- Current Assignee: Konica Minolta Opto, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- Priority: JP2004-032485 20040209
- Main IPC: B32B3/02
- IPC: B32B3/02
Abstract:
An optical element irradiated with a light flux having a wavelength of 350 nm to 450 nm, is provided with a synthetic resin base material; and an antireflection film provided on the synthetic resin base material and including a contact layer being in contact with the synthetic resin base material, wherein the contact layer is a film made of a material containing no oxygen atom or a film made of a mixed material or a material containing no oxygen atom and a material containing an oxygen atom in which the mixed material contains the material containing an oxygen atom less than 10%.
Public/Granted literature
- US20050248864A1 Optical element and optical pickup device Public/Granted day:2005-11-10
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