JPS6472016A - Solid-state image pickup device for spectral measurement - Google Patents
Solid-state image pickup device for spectral measurementInfo
- Publication number
- JPS6472016A JPS6472016A JP6392788A JP6392788A JPS6472016A JP S6472016 A JPS6472016 A JP S6472016A JP 6392788 A JP6392788 A JP 6392788A JP 6392788 A JP6392788 A JP 6392788A JP S6472016 A JPS6472016 A JP S6472016A
- Authority
- JP
- Japan
- Prior art keywords
- gain
- picture elements
- outputs
- output
- pickup device
- 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
Links
Landscapes
- Spectrometry And Color Measurement (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
PURPOSE:To smooth picture element outputs and to prevent the whole dynamic range from decreasing by providing an amplifying circuit which has plural amplification stages and selecting one amplification stage corresponding to each picture element while a picture element output is read out. CONSTITUTION:Picture elements of a CCD image sensor are divided into 1st and 2nd groups where spectral filters for short and long wavelength bands are arranged and monitor picture elements where no spectral filter is arranged. A microcomputer outputs GN1=H and GN2=L for the outputs of the 1st group picture elements, R2/r is selected as the gain of the operational amplifier 28 of an analog processing circuit 15 by turning on an FET 30, and its output is multiplied by the gain R2/r. The microcomputer outputs GN1=GN2=H for the 2nd group and a gain R3/r is selected; and GN1=GN2=L is outputted for the monitor picture elements and a gain R1/r is selected. Thus, even when there are only three kinds of the output levels of the picture elements, all output levels are made nearly uniform by switching the gains and the image pickup device can be applied to the range of an A/D converter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6392788A JPS6472016A (en) | 1988-03-16 | 1988-03-16 | Solid-state image pickup device for spectral measurement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6392788A JPS6472016A (en) | 1988-03-16 | 1988-03-16 | Solid-state image pickup device for spectral measurement |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6472016A true JPS6472016A (en) | 1989-03-16 |
Family
ID=13243467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6392788A Pending JPS6472016A (en) | 1988-03-16 | 1988-03-16 | Solid-state image pickup device for spectral measurement |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6472016A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5521673A (en) * | 1992-07-06 | 1996-05-28 | Nikon Corporation | Photometric apparatus of a camera |
WO2005040741A1 (en) * | 2003-10-29 | 2005-05-06 | Saika Technological Institute Foundation | Spectrophotometer |
-
1988
- 1988-03-16 JP JP6392788A patent/JPS6472016A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5521673A (en) * | 1992-07-06 | 1996-05-28 | Nikon Corporation | Photometric apparatus of a camera |
WO2005040741A1 (en) * | 2003-10-29 | 2005-05-06 | Saika Technological Institute Foundation | Spectrophotometer |
US7489398B2 (en) | 2003-10-29 | 2009-02-10 | Saika Technological Institute Foundation | Spectrophotometer |
AU2004284319B2 (en) * | 2003-10-29 | 2009-11-05 | Saika Technological Institute Foundation | Spectrophotometer |
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