JPH041421U - - Google Patents

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Publication number
JPH041421U
JPH041421U JP4120190U JP4120190U JPH041421U JP H041421 U JPH041421 U JP H041421U JP 4120190 U JP4120190 U JP 4120190U JP 4120190 U JP4120190 U JP 4120190U JP H041421 U JPH041421 U JP H041421U
Authority
JP
Japan
Prior art keywords
output
light
converter
digital signal
variable gain
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
JP4120190U
Other languages
Japanese (ja)
Other versions
JPH0754823Y2 (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 JP4120190U priority Critical patent/JPH0754823Y2/en
Publication of JPH041421U publication Critical patent/JPH041421U/ja
Application granted granted Critical
Publication of JPH0754823Y2 publication Critical patent/JPH0754823Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Description

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

第１図はこの考案の実施例を示すブロツク図、
第２図はその積分器１８の具体例を示す接続図、
第３図は第１図の動作例を示すタイムチヤート、
第４図は積分器１８を電流電圧変換器としても利
用できるようにした例を示す接続図、第５図は積
分器１８の他の例を示す接続図、第６図は従来の
光強度測定装置を示すブロツク図、第７図は第６
図の装置で光パルスを測定する場合の問題点を説
明するためのタイムチヤート、第８図は第６図の
装置の問題を解決した従来の装置を示すブロツク
図、第９図は第８図の装置の問題を説明するため
のタイムチヤートである。 Figure 1 is a block diagram showing an embodiment of this invention.
FIG. 2 is a connection diagram showing a specific example of the integrator 18,
Figure 3 is a time chart showing an example of the operation in Figure 1;
Fig. 4 is a connection diagram showing an example in which the integrator 18 can also be used as a current-voltage converter, Fig. 5 is a connection diagram showing another example of the integrator 18, and Fig. 6 is a conventional light intensity measurement method. A block diagram showing the device, FIG.
A time chart to explain the problems when measuring optical pulses with the device shown in the figure, FIG. 8 is a block diagram showing a conventional device that solves the problems of the device shown in FIG. 6, and FIG. 9 is a block diagram of the device shown in FIG. This is a time chart to explain the problem with the device.

Claims (1)

【実用新案登録請求の範囲】 入力光を電流に変換する受光素子と、 その受光素子の出力電流を積分し、その積分出
力が周期的に放電される積分器と、 その積分器の積分出力を増幅し、その利得を変
更することができる可変利得増幅器と、 その可変利得増幅器の出力を、上記放電周期と
同期してデジタル信号に変換するＡＤ変換器と、 そのＡＤ変換器の出力デジタル信号が入力され
、その大きさに応じて上記可変利得増幅器の利得
を、上記デジタル信号が所定の範囲内に入るよう
に制御する制御器と、 上記ＡＤ変換器の出力を表示する表示器と、 を具備する光強度測定装置。[Claims for Utility Model Registration] A light-receiving element that converts input light into a current, an integrator that integrates the output current of the light-receiving element and whose integrated output is periodically discharged, and an integrated output of the integrator. A variable gain amplifier that can amplify and change the gain; an AD converter that converts the output of the variable gain amplifier into a digital signal in synchronization with the discharge cycle; and an output digital signal of the AD converter. a controller that controls the gain of the variable gain amplifier according to the magnitude of the input signal so that the digital signal falls within a predetermined range; and a display that displays the output of the AD converter. Light intensity measuring device.
JP4120190U 1990-04-18 1990-04-18 Light intensity measuring device Expired - Lifetime JPH0754823Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4120190U JPH0754823Y2 (en) 1990-04-18 1990-04-18 Light intensity measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4120190U JPH0754823Y2 (en) 1990-04-18 1990-04-18 Light intensity measuring device

Publications (2)

Publication Number Publication Date
JPH041421U true JPH041421U (en) 1992-01-08
JPH0754823Y2 JPH0754823Y2 (en) 1995-12-18

Family

ID=31551669

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4120190U Expired - Lifetime JPH0754823Y2 (en) 1990-04-18 1990-04-18 Light intensity measuring device

Country Status (1)

Country Link
JP (1) JPH0754823Y2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002103308A1 (en) * 2001-06-18 2002-12-27 Hamamatsu Photonics K.K. Photosensor
JP2004205359A (en) * 2002-12-25 2004-07-22 Hamamatsu Photonics Kk Photodetector
JP2008209556A (en) * 2007-02-26 2008-09-11 Epson Imaging Devices Corp Electro-optical device, semiconductor device, display device and electronic equipment having the same
US7948483B2 (en) 2004-10-12 2011-05-24 Seiko Epson Corporation Photo detection circuit, method of controlling the same, electro-optical panel, electro-optical device, and electronic apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002103308A1 (en) * 2001-06-18 2002-12-27 Hamamatsu Photonics K.K. Photosensor
JP2004205359A (en) * 2002-12-25 2004-07-22 Hamamatsu Photonics Kk Photodetector
JP4663956B2 (en) * 2002-12-25 2011-04-06 浜松ホトニクス株式会社 Photodetector
US7948483B2 (en) 2004-10-12 2011-05-24 Seiko Epson Corporation Photo detection circuit, method of controlling the same, electro-optical panel, electro-optical device, and electronic apparatus
JP2008209556A (en) * 2007-02-26 2008-09-11 Epson Imaging Devices Corp Electro-optical device, semiconductor device, display device and electronic equipment having the same

Also Published As

Publication number Publication date
JPH0754823Y2 (en) 1995-12-18

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