Invention Grant
US06388976B1 Compact optical head including two light emitters having parallel optical axes
失效
紧凑型光头包括具有平行光轴的两个发光体
- Patent Title: Compact optical head including two light emitters having parallel optical axes
- Patent Title (中): 紧凑型光头包括具有平行光轴的两个发光体
-
Application No.: US09515595Application Date: 2000-02-29
-
Publication No.: US06388976B1Publication Date: 2002-05-14
- Inventor: Shinji Fujita , Hidenori Shinohara , Toshio Sugiyama , Nobuo Imada , Yukio Fukui
- Applicant: Shinji Fujita , Hidenori Shinohara , Toshio Sugiyama , Nobuo Imada , Yukio Fukui
- Priority: JP8-333999 19961213
- Main IPC: G11B700
- IPC: G11B700
Abstract:
A dichroic mirror of a polarized beam splitter is installed between a mirror and an objective lens as a beam synthesize/split means, in an optical system corresponding to a second dick and an optical system corresponding to a first disk arranged so as to form a two-layer structure. The dimension of the optical head in the width, length, and thickness directions are designed moderately.
Information query
