Switch for a light guide circuit

Details Switch for a light guide circuit Switch for a light guide circuit

1983-12-29

1986-09-16

Sikes, William L.

350 9610, 350 9621, 350117, G02B 600, G02B 636, G02B 638, G02B 2156

Patent

active

046118853

ABSTRACT:
The key component of the switch is a transparent frusto conical block (2) having a small base (12) perpendicular to its axis and facing the end of a common light guide (14) and having an elliptical large base (22) inclined relative to the axis (4). The outer surface of the transparent cone is clad (18) with a transparent material of lower refractive index (18). The conical part serves to collimate light from the common guide into a substantially parallel beam of larger diameter than the light guide. The inclined large base (22) acts as a prism to deflect the collimated beam at an angle to the axis (4). The entire component is rotatable about the axis (4), thereby enabling the collimated beam (24) to be directed towards a selected "particular" component, e.g. one out of 24 light guides (26). Extra facets (32, 38) may be provided to divert a small portion of the light to a common control sensor (40) and to position sensors (36).

REFERENCES:
patent: 3389950 (1968-06-01), Harper
patent: 3401232 (1968-09-01), Goldhammer et al.
patent: 4261638 (1981-04-01), Wagner
patent: 4304460 (1981-12-01), Tanaka et al.

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