US 12,253,666 B2
Attenuable resistive optical isolation circuit and device
Jon B. Cusack, Holland, MI (US)
Filed by Jon B. Cusack, Holland, MI (US)
Filed on Mar. 17, 2023, as Appl. No. 18/185,735.
Claims priority of provisional application 63/364,648, filed on May 13, 2022.
Prior Publication US 2023/0367071 A1, Nov. 16, 2023
Int. Cl. G02B 26/02 (2006.01); G10H 1/34 (2006.01); H10F 55/20 (2025.01); H04B 10/80 (2013.01)
CPC G02B 26/023 (2013.01) [G10H 1/348 (2013.01); H10F 55/20 (2025.01); H04B 10/802 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A device for optical isolation, comprising:
a) a first housing comprising:
i) an outside;
ii) an inside; and
iii) at least one access hole connecting the outside to the inside;
b) at least one light source, capable of transmitting a light signal in the inside of the housing;
c) at least one photoreceptor located as to receive the light signal from the light source; and
d) at least one adjustable barrier, the adjustable barrier being capable to block all, some, or none of the light signal from reaching the photoreceptor, the adjustable barrier selected from the group consisting of i) an adjustable barrier that has external threads and the access hole has internal threads that mate with the adjustable barrier external threads, and ii) an adjustable barrier that rotates about the adjustable barrier's main axis and the adjustable barrier includes a bore hole with the bore hole axis located off-axis from the adjustable barrier main axis.