JPS5689026A - Photometry device - Google Patents
Photometry deviceInfo
- Publication number
- JPS5689026A JPS5689026A JP16668979A JP16668979A JPS5689026A JP S5689026 A JPS5689026 A JP S5689026A JP 16668979 A JP16668979 A JP 16668979A JP 16668979 A JP16668979 A JP 16668979A JP S5689026 A JPS5689026 A JP S5689026A
- Authority
- JP
- Japan
- Prior art keywords
- diodes
- via lead
- complicate
- photodiodes
- lead wire
- 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
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
PURPOSE: To obtain a complicate zone pattern easily, by connecting electrically and dividing variably photodetectors, divided into many photometric areas, into desired zones.
CONSTITUTION: Many photodiodes are connected together via lead wires according to zone divisions; for example, diodes 100, 101 and 108 are connected in parallel via lead wire 11, and diodes 102 and 109 are connected in parallel via lead wire 12. As for photodiodes 100, 101... in the same group, logarithmic conversion and impedance conversion are performed by operational amplifiers 24aW24n and logarithmic diodes 25aW25n. Output signals of those amplifiers are inputted to operational amplifier 15a. Consequently, a zone pattern complicate in shape is easily formed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16668979A JPS5689026A (en) | 1979-12-21 | 1979-12-21 | Photometry device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16668979A JPS5689026A (en) | 1979-12-21 | 1979-12-21 | Photometry device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5689026A true JPS5689026A (en) | 1981-07-20 |
Family
ID=15835904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16668979A Pending JPS5689026A (en) | 1979-12-21 | 1979-12-21 | Photometry device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5689026A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61250530A (en) * | 1985-04-26 | 1986-11-07 | Mitsubishi Electric Corp | Light receiving element for setting white balance |
JPS61250529A (en) * | 1985-04-26 | 1986-11-07 | Mitsubishi Electric Corp | Light receiving element for setting white balance |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54123030A (en) * | 1978-03-17 | 1979-09-25 | Olympus Optical Co Ltd | Photometric device |
-
1979
- 1979-12-21 JP JP16668979A patent/JPS5689026A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54123030A (en) * | 1978-03-17 | 1979-09-25 | Olympus Optical Co Ltd | Photometric device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61250530A (en) * | 1985-04-26 | 1986-11-07 | Mitsubishi Electric Corp | Light receiving element for setting white balance |
JPS61250529A (en) * | 1985-04-26 | 1986-11-07 | Mitsubishi Electric Corp | Light receiving element for setting white balance |
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