JPS6449936A - Optical densitometer - Google Patents

Optical densitometer

Info

Publication number
JPS6449936A
JPS6449936A JP20679487A JP20679487A JPS6449936A JP S6449936 A JPS6449936 A JP S6449936A JP 20679487 A JP20679487 A JP 20679487A JP 20679487 A JP20679487 A JP 20679487A JP S6449936 A JPS6449936 A JP S6449936A
Authority
JP
Japan
Prior art keywords
measurement
light
proper
sample
specific wavelength
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
JP20679487A
Other languages
Japanese (ja)
Inventor
Takao Sakai
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.)
Minolta Co Ltd
Original Assignee
Minolta Co Ltd
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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP20679487A priority Critical patent/JPS6449936A/en
Publication of JPS6449936A publication Critical patent/JPS6449936A/en
Pending legal-status Critical Current

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  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To easily know whether or not measurement is proper and to preclude mismeasurement by deciding whether or not the quantity of light in the specific wavelength range of light sources which is measure by a photodetecting means at the time of density measurement is a proper value. CONSTITUTION:At the time of density measurement mode, the photodetecting element 6 measures the quantity of light in the specific wavelength range which is emitted by the light sources 4 and 5 and passed through a sample. A measurement decision means provided to a control arithmetic circuit 21 decides whether or not the measured quantity of light is within a predetermined proper range. A warning circuit 27 annunciates the completion of the measurement when the quantity of light is within a proper range and a failure in measurement when not. A measuring person recognizes whether or not the measurement is performed properly from the signal and removes the trouble of the density measurement of the sample or optical densitometer.
JP20679487A 1987-08-20 1987-08-20 Optical densitometer Pending JPS6449936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20679487A JPS6449936A (en) 1987-08-20 1987-08-20 Optical densitometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20679487A JPS6449936A (en) 1987-08-20 1987-08-20 Optical densitometer

Publications (1)

Publication Number Publication Date
JPS6449936A true JPS6449936A (en) 1989-02-27

Family

ID=16529206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20679487A Pending JPS6449936A (en) 1987-08-20 1987-08-20 Optical densitometer

Country Status (1)

Country Link
JP (1) JPS6449936A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327348A (en) * 1991-09-10 1994-07-05 Pioneer Electronic Corporation Vehicle-direction detecting apparatus
JP2012078206A (en) * 2010-10-01 2012-04-19 Yanmar Co Ltd Apparatus and method for determining quality of fruit and vegetable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327348A (en) * 1991-09-10 1994-07-05 Pioneer Electronic Corporation Vehicle-direction detecting apparatus
JP2012078206A (en) * 2010-10-01 2012-04-19 Yanmar Co Ltd Apparatus and method for determining quality of fruit and vegetable

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