Optical isolator fabricated upon a lead frame

Details Optical isolator fabricated upon a lead frame Optical isolator fabricated upon a lead frame

1985-06-25

1987-09-15

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

357 19, H01L 3112

Patent

active

046941835

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 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 a 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: 3836793 (1974-09-01), Haitz et al.
patent: 3893158 (1975-07-01), Lincoln
patent: 3925801 (1975-12-01), Haitz et al.
patent: 4047045 (1977-09-01), Paxton, Jr. et al.
patent: 4160308 (1979-07-01), Courtney et al.
patent: 4446375 (1984-05-01), Aird

Affiliated with

Also associated with

Rating

Optical isolator fabricated upon a lead frame 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 fabricated upon a lead frame, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical isolator fabricated upon a lead frame will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1386880