JPH02135921U - - Google Patents

Info

Publication number
JPH02135921U
JPH02135921U JP4367889U JP4367889U JPH02135921U JP H02135921 U JPH02135921 U JP H02135921U JP 4367889 U JP4367889 U JP 4367889U JP 4367889 U JP4367889 U JP 4367889U JP H02135921 U JPH02135921 U JP H02135921U
Authority
JP
Japan
Prior art keywords
laser beam
receiving element
light
division light
pinhole
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
JP4367889U
Other languages
English (en)
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 JP4367889U priority Critical patent/JPH02135921U/ja
Publication of JPH02135921U publication Critical patent/JPH02135921U/ja
Pending legal-status Critical Current

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Description

【図面の簡単な説明】
第1図は本考案の一実施例を示す正面図、第2
図は光学実験系への組付け例を示す側面図、第3
図は従来例を示す側面図である。 7a〜7d……4分割された受光領域、8……
ピンホール。

Claims (1)

    【実用新案登録請求の範囲】
  1. レーザ光を用いた光学実験でレーザ光光軸の移
    動の有無を検出する4分割受光素子において、4
    分割された受光領域の中央にピンホールを形成し
    たことを特徴とする4分割受光素子。
JP4367889U 1989-04-14 1989-04-14 Pending JPH02135921U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4367889U JPH02135921U (ja) 1989-04-14 1989-04-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4367889U JPH02135921U (ja) 1989-04-14 1989-04-14

Publications (1)

Publication Number Publication Date
JPH02135921U true JPH02135921U (ja) 1990-11-13

Family

ID=31556295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4367889U Pending JPH02135921U (ja) 1989-04-14 1989-04-14

Country Status (1)

Country Link
JP (1) JPH02135921U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644603A (ja) * 1992-07-28 1994-02-18 Nec Corp 光ヘッド装置のピンホール板及びメインビーム検出器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644603A (ja) * 1992-07-28 1994-02-18 Nec Corp 光ヘッド装置のピンホール板及びメインビーム検出器

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