JPS61176523U - - Google Patents

Info

Publication number
JPS61176523U
JPS61176523U JP5849085U JP5849085U JPS61176523U JP S61176523 U JPS61176523 U JP S61176523U JP 5849085 U JP5849085 U JP 5849085U JP 5849085 U JP5849085 U JP 5849085U JP S61176523 U JPS61176523 U JP S61176523U
Authority
JP
Japan
Prior art keywords
light flux
incident
signal
beam splitter
reflected
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.)
Pending
Application number
JP5849085U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP5849085U priority Critical patent/JPS61176523U/ja
Publication of JPS61176523U publication Critical patent/JPS61176523U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Elements Other Than Lenses (AREA)
  • Optical Head (AREA)

Description

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

図は本考案の実施例を示す光学図である。 １：ビームスプリツタ、１１：第１面、１２：
第２面、Ｌ：入射光束、Ｍ：信号光束、Ｇ：迷光
。 The figure is an optical diagram showing an embodiment of the present invention. 1: Beam splitter, 11: First surface, 12:
Second surface, L: incident light flux, M: signal light flux, G: stray light.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 入射光束が第１面に傾斜して入射され、第２面
から射出された光束が光デイスクで反射されて上
記透過光束とほぼ同一光路を逆向きに進む信号光
束となり、該信号光束が入射されてその一部を反
射する光デイスク用ビームスプリツタにおいて、
該ビームスプリツタが上記信号光束の第２面にお
ける反射領域と、上記信号光束が第１面により反
射された後第２反射面を透過する透過領域とが実
質上重ならないような厚さを有することを特徴と
する光デイスク用ビームスプリツタ。 The incident light flux is incident on the first surface at an angle, and the light flux emitted from the second surface is reflected by the optical disk to become a signal light flux that travels in the opposite direction along substantially the same optical path as the transmitted light flux, and the signal light flux is incident. In a beam splitter for an optical disk that reflects a part of the beam,
The beam splitter has a thickness such that a reflection area of the signal beam on the second surface and a transmission area where the signal beam is transmitted through the second reflection surface after being reflected by the first surface do not substantially overlap. A beam splitter for optical disks characterized by:
JP5849085U 1985-04-19 1985-04-19 Pending JPS61176523U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5849085U JPS61176523U (en) 1985-04-19 1985-04-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5849085U JPS61176523U (en) 1985-04-19 1985-04-19

Publications (1)

Publication Number Publication Date
JPS61176523U true JPS61176523U (en) 1986-11-04

Family

ID=30584037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5849085U Pending JPS61176523U (en) 1985-04-19 1985-04-19

Country Status (1)

Country Link
JP (1) JPS61176523U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51120740A (en) * 1975-04-15 1976-10-22 Nec Corp Light branching device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51120740A (en) * 1975-04-15 1976-10-22 Nec Corp Light branching device

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