Diffraction grating, light source unit applying the same therein, and optical head device employing the same

Invention Grant

US07164532B2 Diffraction grating, light source unit applying the same therein, and optical head device employing the same 有权

Title translation: 衍射光栅，其中施加其的光源单元，以及采用该衍射光栅的光学头装置

Please log in to see more content

Patent Title: Diffraction grating, light source unit applying the same therein, and optical head device employing the same
Patent Title (中): 衍射光栅，其中施加其的光源单元，以及采用该衍射光栅的光学头装置
Application No.: US10414047

Application Date: 2003-04-16
Publication No.: US07164532B2

Publication Date: 2007-01-16
Inventor: Hiroyoshi Funato , Junichi Kitabayashi , Shigeru Oohchida , Tsuyoshi Suzudo
Applicant: Hiroyoshi Funato , Junichi Kitabayashi , Shigeru Oohchida , Tsuyoshi Suzudo
Applicant Address: JP Tokyo
Assignee: Ricoh Company, Ltd.
Current Assignee: Ricoh Company, Ltd.
Current Assignee Address: JP Tokyo
Agency: Dickstein Shapiro LLP
Priority: JP2002-117861 20020419; JP2002-118445 20020419; JP2002-171427 20020612; JP2002-245199 20020826
Main IPC: G02B5/18
IPC: G02B5/18

$Diffraction grating, light source unit applying the same therein, and optical head device employing the same$

Abstract:

A polarization diffraction grating includes two media having different orientation states arranged alternately and cyclically, wherein each boundary between the media forms an oblique rectangular shape.

Abstract(Chinese):

偏振衍射光栅包括具有交替和循环布置的不同取向状态的两种介质，其中介质之间的每个边界形成倾斜的矩形形状。

Public/Granted literature

US20040013076A1 Diffraction grating, light source unit applying the same therein, and optical head device employing the same Public/Granted day:2004-01-22

Information query

Espacenet

IPC分类:

G	物理
G02	光学
G02B	光学元件、系统或仪器
G02B5/00	除透镜外的光学元件（光波导入G02B6/00；光学逻辑元件入G02F3/00）
G02B5/18	.衍射光栅