JPS54127340A - Light attenuator - Google Patents
Light attenuatorInfo
- Publication number
- JPS54127340A JPS54127340A JP3413878A JP3413878A JPS54127340A JP S54127340 A JPS54127340 A JP S54127340A JP 3413878 A JP3413878 A JP 3413878A JP 3413878 A JP3413878 A JP 3413878A JP S54127340 A JPS54127340 A JP S54127340A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- attenuator
- lens
- film
- optical
- 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
- Optical Filters (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
PURPOSE: To make the light attenuator miniature, lightweight and robust by forming an attenuating film to an optical lens having a square refractive index distribution and incorporating the lens into the connector for optical fibers.
CONSTITUTION: An optical fiber F1 and an attenuating element M are secured to a male type connector P and an optical fiber F2 is secured to a female type connector J. The connectors P, J are then fitted together. The attenuating element M is constituted by depositing a vapor deposition film 6 of Cr, Ni, Ge, Si, etc. on the incident or exit face of light radiation or intermediate face of the square refractive index distribution lens L in which the length of the light propagation direction is 1/2 or integer times of 1/2 of one period length of rays. Here, the luminous flux from the optical fiber F1 is magnified and converged within the attenuator M and is coupled to the optical fiber F2 in the converged position. The specified attenuation is obtained with the film 6 and the luminous flux is led to the optical fiber F2 by passing through the attenuator M.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3413878A JPS54127340A (en) | 1978-03-27 | 1978-03-27 | Light attenuator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3413878A JPS54127340A (en) | 1978-03-27 | 1978-03-27 | Light attenuator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54127340A true JPS54127340A (en) | 1979-10-03 |
Family
ID=12405849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3413878A Pending JPS54127340A (en) | 1978-03-27 | 1978-03-27 | Light attenuator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54127340A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6410704U (en) * | 1987-07-09 | 1989-01-20 | ||
JPH02167507A (en) * | 1988-09-08 | 1990-06-27 | Furukawa Electric Co Ltd:The | Filter-containing optical connector and production thereof |
WO2023276026A1 (en) * | 2021-06-30 | 2023-01-05 | ナルックス株式会社 | Optical element provided with attenuation region, and manufacturing method thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5133565U (en) * | 1974-09-02 | 1976-03-12 | ||
JPS5185729A (en) * | 1975-01-25 | 1976-07-27 | Fujitsu Ltd |
-
1978
- 1978-03-27 JP JP3413878A patent/JPS54127340A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5133565U (en) * | 1974-09-02 | 1976-03-12 | ||
JPS5185729A (en) * | 1975-01-25 | 1976-07-27 | Fujitsu Ltd |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6410704U (en) * | 1987-07-09 | 1989-01-20 | ||
JPH02167507A (en) * | 1988-09-08 | 1990-06-27 | Furukawa Electric Co Ltd:The | Filter-containing optical connector and production thereof |
WO2023276026A1 (en) * | 2021-06-30 | 2023-01-05 | ナルックス株式会社 | Optical element provided with attenuation region, and manufacturing method thereof |
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