JPS5590828A - Digital spectrophotometer - Google Patents

Digital spectrophotometer

Info

Publication number
JPS5590828A
JPS5590828A JP16186778A JP16186778A JPS5590828A JP S5590828 A JPS5590828 A JP S5590828A JP 16186778 A JP16186778 A JP 16186778A JP 16186778 A JP16186778 A JP 16186778A JP S5590828 A JPS5590828 A JP S5590828A
Authority
JP
Japan
Prior art keywords
signal
passed
signals
ratio
specimen
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
JP16186778A
Other languages
Japanese (ja)
Other versions
JPS6125088B2 (en
Inventor
Takashi Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimadzu Corp
Original Assignee
Shimadzu Corp
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 Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP16186778A priority Critical patent/JPS5590828A/en
Publication of JPS5590828A publication Critical patent/JPS5590828A/en
Publication of JPS6125088B2 publication Critical patent/JPS6125088B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To improve the S/N ratio of a digital spectrophotometer and the accuracy of zero potential input vicinity thereof by pulsating a reference signal and a specimen signal through different V/F converter to be counted. CONSTITUTION:Light from a light source 12 is passed through a spectrometer 1 and then passed through the reference cell R and specimen cell S of a light measuring unit 2 in time division manner, and then converted via a photodetector 4 to an electric signal. The signals R and S are separated by a synchronous rectifier 6 by the signal from a synchronizing signal generator 3 for generating a synchronizing signal upon detection of a timlng of the switching by a rotary sector, and applied respectively to V/F converters 7, 8 having the same characteristics. Then, counters 9, 10 counts the pulse train. Thus, the signals are processed to produce S/R ratio by a controller 11, and indicated in a display unit 13.
JP16186778A 1978-12-29 1978-12-29 Digital spectrophotometer Granted JPS5590828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16186778A JPS5590828A (en) 1978-12-29 1978-12-29 Digital spectrophotometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16186778A JPS5590828A (en) 1978-12-29 1978-12-29 Digital spectrophotometer

Publications (2)

Publication Number Publication Date
JPS5590828A true JPS5590828A (en) 1980-07-09
JPS6125088B2 JPS6125088B2 (en) 1986-06-13

Family

ID=15743461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16186778A Granted JPS5590828A (en) 1978-12-29 1978-12-29 Digital spectrophotometer

Country Status (1)

Country Link
JP (1) JPS5590828A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110887793A (en) * 2018-09-10 2020-03-17 中国石油化工股份有限公司 Modulation wave driving type precision photoelectric detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110887793A (en) * 2018-09-10 2020-03-17 中国石油化工股份有限公司 Modulation wave driving type precision photoelectric detector

Also Published As

Publication number Publication date
JPS6125088B2 (en) 1986-06-13

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