Photo-coupler with delay function using a fluorescent substance

Details Photo-coupler with delay function using a fluorescent substance Photo-coupler with delay function using a fluorescent substance

1987-03-26

1989-05-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

2504581, 357 19, G02B 2700, F21V 916

Patent

active

048291927

ABSTRACT:
A photo-coupler with delay function includes a fluorescent substance, a light-emitting diode disposed at one end of the fluorescent substance and a phototransistor disposed at the other end of the fluorescent substance. While a light emitted from the light-emitting diode is impinging on the fluorescent substance, it emits a fluorescence. The fluorescent substance emits a phosphorescence after an emission from the light-emitting diode is interrupted. In this arrangement, when the fluorescent substance is displaced with an operating plate, the light intermittently emitted from the light-emitting diode impinges on the fluorescent substance. The phototransistor selectively detects the light intermittently emitted from the light-emitting diode, the fluorescence and the phosphorescence both continuously emitted from the fluorescent substance.

Affiliated with

Also associated with

Rating

Photo-coupler with delay function using a fluorescent substance does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photo-coupler with delay function using a fluorescent substance , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photo-coupler with delay function using a fluorescent substance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-91265