JPH0158132U - - Google Patents

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Publication number
JPH0158132U
JPH0158132U JP15422487U JP15422487U JPH0158132U JP H0158132 U JPH0158132 U JP H0158132U JP 15422487 U JP15422487 U JP 15422487U JP 15422487 U JP15422487 U JP 15422487U JP H0158132 U JPH0158132 U JP H0158132U
Authority
JP
Japan
Prior art keywords
output
photodetector
circuit
slit
detects
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
JP15422487U
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 JP15422487U priority Critical patent/JPH0158132U/ja
Publication of JPH0158132U publication Critical patent/JPH0158132U/ja
Pending legal-status Critical Current

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  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Description

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

第１図は本考案の一実施例を示す概念図、第２
図は第１図に示す処理回路のブロツク図、第３図
は従来例の一例を示す概念図、第４図はスリツト
による光の透過波形について示す波形図である。 １……フオトデイテクタ、２……回転スリツト
板、３……ピークデイラクタ回路、４……フオト
インタラプタ、５……ホールド回路、７……コン
パレータ、８……スレツシヨルドレベル発生回路
、９……出力タイミング発生回路、１０……処理
回路。 Fig. 1 is a conceptual diagram showing one embodiment of the present invention;
The figure is a block diagram of the processing circuit shown in FIG. 1, FIG. 3 is a conceptual diagram showing an example of a conventional example, and FIG. 4 is a waveform diagram showing the waveform of light transmitted through a slit. DESCRIPTION OF SYMBOLS 1... Photo detector, 2... Rotating slit plate, 3... Peak detractor circuit, 4... Photo interrupter, 5... Hold circuit, 7... Comparator, 8... Threshold level generation circuit, 9... Output timing generation circuit, 10...processing circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 被測定ビームを透過させるスリツトをもつ回転
板と、前記スリツトを通つたビーム出力を検出す
るフオトデイテクタと、前記フオトデイテクタ出
力の最大値を検出するピークデイラクタ回路と、
非スリツト部での前記フオトデイテクタ出力を保
持するホールド回路と、前記ピークデイテクタ回
路出力およびホールド回路の出力にもとづいてビ
ーム径判定用スレツシヨルドレベルを生成するス
レツシヨルドレベル発生回路と、前記スレツシヨ
ルドレベルで前記フオトデイテクタ出力をデイジ
タル化するコンパレータとを含むことを特徴とす
る光ビーム径測定装置。 a rotating plate having a slit that transmits the beam to be measured; a photodetector that detects the output of the beam passing through the slit; and a peak diracter circuit that detects the maximum value of the output of the photodetector;
a hold circuit that holds the photodetector output in the non-slit section; a threshold level generation circuit that generates a threshold level for beam diameter determination based on the output of the peak detector circuit and the output of the hold circuit; and a comparator that digitizes the output of the photodetector at a digital level.
JP15422487U 1987-10-07 1987-10-07 Pending JPH0158132U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15422487U JPH0158132U (en) 1987-10-07 1987-10-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15422487U JPH0158132U (en) 1987-10-07 1987-10-07

Publications (1)

Publication Number Publication Date
JPH0158132U true JPH0158132U (en) 1989-04-11

Family

ID=31430769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15422487U Pending JPH0158132U (en) 1987-10-07 1987-10-07

Country Status (1)

Country Link
JP (1) JPH0158132U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02259475A (en) * 1989-03-31 1990-10-22 Yokogawa Electric Corp Half-width measuring circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02259475A (en) * 1989-03-31 1990-10-22 Yokogawa Electric Corp Half-width measuring circuit

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