JPS5680005A - Device for stabilizing quantity of light - Google Patents

Device for stabilizing quantity of light

Info

Publication number
JPS5680005A
JPS5680005A JP15686479A JP15686479A JPS5680005A JP S5680005 A JPS5680005 A JP S5680005A JP 15686479 A JP15686479 A JP 15686479A JP 15686479 A JP15686479 A JP 15686479A JP S5680005 A JPS5680005 A JP S5680005A
Authority
JP
Japan
Prior art keywords
light
light source
optical fiber
received
output
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.)
Granted
Application number
JP15686479A
Other languages
Japanese (ja)
Other versions
JPS6140088B2 (en
Inventor
Hiroyuki Naito
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15686479A priority Critical patent/JPS5680005A/en
Publication of JPS5680005A publication Critical patent/JPS5680005A/en
Publication of JPS6140088B2 publication Critical patent/JPS6140088B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Communication System (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

PURPOSE: To stabilize the quantity of light by receiving part of the output light of the 1st light source, controlling the output quantity of the 2nd light source which outputs the light of specific frequency according to the quantity of said received light, leading the controlled light to the filter interposed between the 1st light source and an optical fiber, changing the transmittance thereof and controlling the quantity of light from the 1st light source.
CONSTITUTION: Light from the 1st light source 1 passes a slit 2, and an optical fiber 7. The light having the frequency characteristic of the fiber 7 passes glass 8 and part of the light is received in a received light control part 4 by a half mirror 3. On the other hand, the light transmitted through the half mirror 3 enters an optical fiber 7' and is thereby transmitted. From the control part 4, the electrical output conrresponding to the quantity of the received light is sent to the 2nd light source 5. The light of the specific frequency is then outputted at the output quantity corresponding to the input quantity from the light source 5 and is irradiated to the glass 8 via an optical fiber 9. The glass 8 blackens according to the quantity of the irradiated light and forms a negative feedback circuit by light, thereby stabilizing the quantity of the light entering the fiber 7'.
COPYRIGHT: (C)1981,JPO&Japio
JP15686479A 1979-12-05 1979-12-05 Device for stabilizing quantity of light Granted JPS5680005A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15686479A JPS5680005A (en) 1979-12-05 1979-12-05 Device for stabilizing quantity of light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15686479A JPS5680005A (en) 1979-12-05 1979-12-05 Device for stabilizing quantity of light

Publications (2)

Publication Number Publication Date
JPS5680005A true JPS5680005A (en) 1981-07-01
JPS6140088B2 JPS6140088B2 (en) 1986-09-08

Family

ID=15637051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15686479A Granted JPS5680005A (en) 1979-12-05 1979-12-05 Device for stabilizing quantity of light

Country Status (1)

Country Link
JP (1) JPS5680005A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61156329U (en) * 1985-03-18 1986-09-27
US5396368A (en) * 1985-01-14 1995-03-07 Rockwell International Corporation Flexible rejection filter (U)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5396368A (en) * 1985-01-14 1995-03-07 Rockwell International Corporation Flexible rejection filter (U)
JPS61156329U (en) * 1985-03-18 1986-09-27

Also Published As

Publication number Publication date
JPS6140088B2 (en) 1986-09-08

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