Passive line-of-sight optical switching apparatus
First Claim
Patent Images
1. Apparatus for switching power to an electrical device comprising:
- optically controllable first switching means for switching power to said electrical device including;
(a) power control means for controlling the power to said electrical device, (b) means for emitting unguided radiation from said first switching means, and (c) radiation detection means for detecting reflected and modulated unguided radiation and providing a signal for controlling said power control means; and
second switching means, remote from said first switching means and only optically coupled thereto for reflecting and modulating said unguided radiation from said first switching means back to said first switching means, including;
(a) reflection means for reflecting said unguided radiation, (b) a manually operative switch, having at least two positions, (c) modulating means for modulating said unguided radiation in accordance with a position of said switch;
wherein the power to the electrical device is controlled depending upon the reflected and modulated unguided radiation from said second switching means and returned to said first switching means.
0 Assignments
0 Petitions
Accused Products
Abstract
Line of sight optical communications apparatus comprising a plurality of optical beam reflectors arranged in a protected region for optical communication therebetween, at least one of the reflectors being arranged to reflect a signal received at the reflectors to a base location remote from the protected region. Stabilized reflector apparatus which is insensitive to rotation about axes lying in a given plane and which is particularly useful in the line of sight optical apparatus is also described.
-
Citations
15 Claims
-
1. Apparatus for switching power to an electrical device comprising:
-
optically controllable first switching means for switching power to said electrical device including;
(a) power control means for controlling the power to said electrical device, (b) means for emitting unguided radiation from said first switching means, and (c) radiation detection means for detecting reflected and modulated unguided radiation and providing a signal for controlling said power control means; andsecond switching means, remote from said first switching means and only optically coupled thereto for reflecting and modulating said unguided radiation from said first switching means back to said first switching means, including;
(a) reflection means for reflecting said unguided radiation, (b) a manually operative switch, having at least two positions, (c) modulating means for modulating said unguided radiation in accordance with a position of said switch;wherein the power to the electrical device is controlled depending upon the reflected and modulated unguided radiation from said second switching means and returned to said first switching means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. Apparatus for switching power to an electrical device comprising:
-
optically controllable first switching means for switching power to said electrical device including;
(a) power control means for controlling the power to said electrical device, (b) means for emitting unguided radiation from said first switching means, and (c) radiation detection means for detecting reflected and modulated unguided radiation and providing a signal for controlling said power control means; andsecond switching means, remote from said first switching means and only optically coupled thereto for reflecting and modulating said unguided radiation from said first switching means back to said first switching means, including;
(a) reflection means for reflecting said unguided radiation, (b) a manually operative switch, having at least two positions, (c) polarization means for polarizing or not polarizing said unguided radiation in accordance with a position of said manually operative switch;wherein the power to the electrical device is controlled depending upon the reflected unguided radiation from said second switching means and returned to said first switching means. - View Dependent Claims (11, 12, 13, 14, 15)
-
Specification