Optical isolator

Details Optical isolator Optical isolator

1989-06-09

1991-09-17

Chaudhuri, Olik

Fishing, trapping, and vermin destroying

437906, 361421, 174 524, 29827, H01L 2160

Patent

active

050495275

ABSTRACT:
An optical isolator is fabricated upon a lead frame having an LED section which is rotated 180.degree. to position the LED over the photodiode. Prior to rotation both the LED and the photodiode attachment portions (81,83) of the leads are down set a predetermined amount to fix the size of the isolation gap between the LED and the photodiode. Dielectric sheets are attached to the outer surfaces of the LED and photodiode leads and an optically transmissive resin is injected therebetween to form a light guide and to encapsulate the LED and photodiode dice and their associated bond wires. In an alternate embodiment a sheet is attached to the outer surface of one lead and a dielectric sheet thereagainst is positioned at a tilted angle between the LED and the photodiode.

REFERENCES:
patent: 3660669 (1972-05-01), Grenon
patent: 3839782 (1974-10-01), Lincoln
patent: 3893158 (1975-07-01), Lincoln
patent: 3925801 (1975-12-01), Hartz et al.
patent: 4047045 (1977-09-01), Paxton
patent: 4156148 (1979-05-01), Kaufman
patent: 4322628 (1982-03-01), Tanaka
patent: 4633582 (1987-01-01), Ching et al.

Affiliated with

Also associated with

Rating

Optical isolator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical isolator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical isolator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1917138