Invention Grant
- Patent Title: Objective lens, optical pickup device, and optical recording/reproducing apparatus
- Patent Title (中): 物镜，光学拾取装置和光学记录/再现装置
-
Application No.: US12466465Application Date: 2009-05-15
-
Publication No.: US08345356B2Publication Date: 2013-01-01
- Inventor: Toshiaki Katsuma , Masao Mori , Tetsuya Ori , Yu Kitahara
- Applicant: Toshiaki Katsuma , Masao Mori , Tetsuya Ori , Yu Kitahara
- Applicant Address: JP Saitama
- Assignee: Fujinon Corporation
- Current Assignee: Fujinon Corporation
- Current Assignee Address: JP Saitama
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPP2008-129204 20080516
- Main IPC: G02B13/18
- IPC: G02B13/18
Abstract:
An objective lens for converging light emitted from a light source onto an optical recording medium to record and reproduce information consists of a single lens that has at least one aspheric surface. The following conditional expressions (1) and (2) are satisfied: −0.90
Public/Granted literature
- US20090285078A1 OBJECTIVE LENS, OPTICAL PICKUP DEVICE, AND OPTICAL RECORDING/REPRODUCING APPARATUS Public/Granted day:2009-11-19
Information query
