JPS6064414U - 2 beam optical head - Google Patents

2 beam optical head

Info

Publication number
JPS6064414U
JPS6064414U JP15526483U JP15526483U JPS6064414U JP S6064414 U JPS6064414 U JP S6064414U JP 15526483 U JP15526483 U JP 15526483U JP 15526483 U JP15526483 U JP 15526483U JP S6064414 U JPS6064414 U JP S6064414U
Authority
JP
Japan
Prior art keywords
optical head
beams
beam optical
collimator lens
optical medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15526483U
Other languages
Japanese (ja)
Other versions
JPS647469Y2 (en
Inventor
雅彦 藤原
正隆 伊藤
Original Assignee
日本電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電気株式会社 filed Critical 日本電気株式会社
Priority to JP15526483U priority Critical patent/JPS6064414U/en
Publication of JPS6064414U publication Critical patent/JPS6064414U/en
Application granted granted Critical
Publication of JPS647469Y2 publication Critical patent/JPS647469Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Head (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は艷録、再生用の光スポラ）（７）分離状態の説
明図、第２図は２ビーム光ヘツドの収束光学系を示す構
成図、第３図ａ、　ｂはガラス板の挿入の効果の説明図
、第４図は本考案の実施例を示す構成図である。 図において、１？　　４ａｖ　　４ｂはレンズ、２，２
ａ、２ｂは半導体レーザ、３ａｗ　３ｂｔ　５ａｔ　５
ｂはレーザ光、６は干渉フィルター、７はガラス板、８
は偏光ビーム・スプリッタ、９は入／４板、１０は蝉体
、１１は検出系である。Figure 1 is an explanatory diagram of the separated state (7) (7) An explanatory diagram of the separated state, Figure 2 is a configuration diagram showing the converging optical system of the two-beam optical head, and Figures 3 a and b are the insertion of the glass plate. FIG. 4 is a block diagram showing an embodiment of the present invention. In the diagram, 1? 4av 4b is lens, 2,2
a, 2b are semiconductor lasers, 3aw 3bt 5at 5
b is a laser beam, 6 is an interference filter, 7 is a glass plate, 8
9 is a polarizing beam splitter, 9 is an input/quarter plate, 10 is a cicada body, and 11 is a detection system.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ２つの半導体レーザの光をそれぞれコリメニ′　　　タ
・レンズにより略平行化するとともに合波して一つの収
束レンズに入射させ、両ビームを検出系に照射して２つ
の収束光スポットを形成し、それ、を用いて光学的に情
報の記録、再生を行なう２ビーム光ヘツドにおいて、前
記２つの半導体レーザのうち少なくとも１つ−の半導体
レーザと前記半導体レーザからのレーザ光を略平行化す
るコリメータ・レンズとの間に屈折率が１とは異なる等
方な光学媒質を介在させ、且つ前記光学媒質の厚みを可
変としたことを特徴とする２ビｉム′光学ヘツド。The beams of the two semiconductor lasers are each made approximately parallel by a collimator lens, combined, and incident on a single convergent lens. Both beams are irradiated onto the detection system to form two convergent light spots, and then In a two-beam optical head that optically records and reproduces information using a collimator lens, at least one of the two semiconductor lasers and a collimator lens for substantially collimating the laser light from the semiconductor laser. A two-beam optical head characterized in that an isotropic optical medium having a refractive index different from 1 is interposed between the two beams and the optical medium, and the thickness of the optical medium is variable.
JP15526483U 1983-10-06 1983-10-06 2 beam optical head Granted JPS6064414U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15526483U JPS6064414U (en) 1983-10-06 1983-10-06 2 beam optical head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15526483U JPS6064414U (en) 1983-10-06 1983-10-06 2 beam optical head

Publications (2)

Publication Number Publication Date
JPS6064414U true JPS6064414U (en) 1985-05-07
JPS647469Y2 JPS647469Y2 (en) 1989-02-28

Family

ID=30342965

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15526483U Granted JPS6064414U (en) 1983-10-06 1983-10-06 2 beam optical head

Country Status (1)

Country Link
JP (1) JPS6064414U (en)

Also Published As

Publication number Publication date
JPS647469Y2 (en) 1989-02-28

Similar Documents

Publication Publication Date Title
JPS60132616U (en) recording device
JPS6064414U (en) 2 beam optical head
JPS5812148A (en) Optical head
JPS59125727U (en) Optical information pickup device
JPS59112326U (en) optical head
JPS6064424U (en) magneto-optical disk device
JPS5925626U (en) Multi-beam optical disk head
JPS60106039A (en) Optical information processor
JPS5960743U (en) optical pick up
JPS5915019U (en) optical isolator
JPS6036622U (en) optical lens
JPS58159641U (en) Optical information recording and reproducing device
JPS6374724U (en)
JPS62129127U (en)
JPS59153625U (en) Optical head for optical disk
JPS5912111U (en) 1/4 wavelength plate
JPS59178613U (en) Focusing optical system for optical head
JPS6040034U (en) Optical information recording or reproducing device
JPS5852650U (en) optical head
JPH05165390A (en) Image storage device
JPS60127633U (en) Multiple beam laser light source
JPS60140225U (en) optical head
JPS6239229U (en)
JPS6020025U (en) Optical disk signal detection splitter
JPS5956640U (en) Optical recording information reproducing device