Optical isolator with encapsulation

Details Optical isolator with encapsulation Optical isolator with encapsulation

1991-06-26

1992-09-15

Mintel, William

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

357 72, 357 19, 357 70, 250551, 250239, H01L 3300

Patent

active

051482436

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 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: 3836793 (1974-09-01), Haitz et al.
patent: 3839782 (1974-10-01), Lincoln
patent: 3893158 (1975-07-01), Lincoln
patent: 3925801 (1975-12-01), Haitz et al.
patent: 4047045 (1977-09-01), Paxton, Jr. et al.
patent: 4156148 (1979-05-01), Kaufman
patent: 4160308 (1979-07-01), Courtney et al.
patent: 4322628 (1982-03-01), Tanaka
patent: 4446375 (1984-05-01), Aird
patent: 4533582 (1987-01-01), Ching et al.
patent: 4791473 (1988-12-01), Phy

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-740051