JPS5419763A - Optical attenuator - Google Patents
Optical attenuatorInfo
- Publication number
- JPS5419763A JPS5419763A JP8483477A JP8483477A JPS5419763A JP S5419763 A JPS5419763 A JP S5419763A JP 8483477 A JP8483477 A JP 8483477A JP 8483477 A JP8483477 A JP 8483477A JP S5419763 A JPS5419763 A JP S5419763A
- Authority
- JP
- Japan
- Prior art keywords
- optical attenuator
- attenuation
- comparing
- apply
- liquid crystal
- 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
- Control Of Non-Electrical Variables (AREA)
Abstract
PURPOSE: To stably obtain the desired attenuation by detecting the optical power before and after it passes through an optically attenuating liquid crystal and by comparing the detected output to apply the voltage corresponding to a preset attenuation.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8483477A JPS5419763A (en) | 1977-07-14 | 1977-07-14 | Optical attenuator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8483477A JPS5419763A (en) | 1977-07-14 | 1977-07-14 | Optical attenuator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5419763A true JPS5419763A (en) | 1979-02-14 |
Family
ID=13841802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8483477A Pending JPS5419763A (en) | 1977-07-14 | 1977-07-14 | Optical attenuator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5419763A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59142741A (en) * | 1983-02-04 | 1984-08-16 | Fuji Photo Film Co Ltd | Magnetic recording medium |
-
1977
- 1977-07-14 JP JP8483477A patent/JPS5419763A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59142741A (en) * | 1983-02-04 | 1984-08-16 | Fuji Photo Film Co Ltd | Magnetic recording medium |
JPH0533446B2 (en) * | 1983-02-04 | 1993-05-19 | Fuji Photo Film Co Ltd |
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