JPS5760880A - Light emmision functioner - Google Patents

Light emmision functioner

Info

Publication number
JPS5760880A
JPS5760880A JP13641680A JP13641680A JPS5760880A JP S5760880 A JPS5760880 A JP S5760880A JP 13641680 A JP13641680 A JP 13641680A JP 13641680 A JP13641680 A JP 13641680A JP S5760880 A JPS5760880 A JP S5760880A
Authority
JP
Japan
Prior art keywords
current
output
led
light
photooutput
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
JP13641680A
Other languages
Japanese (ja)
Other versions
JPS6161557B2 (en
Inventor
Fumio Inaba
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP13641680A priority Critical patent/JPS5760880A/en
Publication of JPS5760880A publication Critical patent/JPS5760880A/en
Publication of JPS6161557B2 publication Critical patent/JPS6161557B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F3/00—Optical logic elements; Optical bistable devices
    • G02F3/02—Optical bistable devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)
  • Semiconductor Lasers (AREA)
  • Led Devices (AREA)

Abstract

PURPOSE:To achieve a bistable state within some range of light input in a light emmision functioner by a method wherein a photodetector is installed in an immediate front of an LED, and a detection output is amplified to use for excitation current of the luminous device. CONSTITUTION:By exciting an LED 1 with a power supply 2, an output Pe is emitted. When an output 3 is detected at a detector 4, a detection current Je has a set relation with output Pe. A current Jf wherein a fixed D.C. voltage is added to up to m-th order nonlinear terms is generated at a generator 6 based on Je, and is mixed with an excitation current and then applied to the LED 1. With application of Jf, the photooutput Pe allows demonstration of bistable nature. Within the region that the number of photons n is propeortional to a light power, the characteristic curve of n versus Je-loss gamma draws a fixed hysteresis at m=2nd order. Furthermore, a je-Jp curve shows various characteristics according to selection of a factor of a feedback current, by using this variable characteristic, a special equipment can be constructed, which sharpens a photooutput pulse, performs high-speed switching and logical element movement against a pulse exciation current.
JP13641680A 1980-09-30 1980-09-30 Light emmision functioner Granted JPS5760880A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13641680A JPS5760880A (en) 1980-09-30 1980-09-30 Light emmision functioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13641680A JPS5760880A (en) 1980-09-30 1980-09-30 Light emmision functioner

Publications (2)

Publication Number Publication Date
JPS5760880A true JPS5760880A (en) 1982-04-13
JPS6161557B2 JPS6161557B2 (en) 1986-12-26

Family

ID=15174642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13641680A Granted JPS5760880A (en) 1980-09-30 1980-09-30 Light emmision functioner

Country Status (1)

Country Link
JP (1) JPS5760880A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5149564A (en) * 1990-03-16 1992-09-22 Hitachi, Ltd. Method of forming lubricating film and a method of preparing magnetic recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5149564A (en) * 1990-03-16 1992-09-22 Hitachi, Ltd. Method of forming lubricating film and a method of preparing magnetic recording medium

Also Published As

Publication number Publication date
JPS6161557B2 (en) 1986-12-26

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