Wavelength-controllable voltage-phase photodiode optoelectronic switch ("opsistor")

An optoelectronic coupler, for coupling a source of light signals to a receiver that can process voltage-phase signals, comprising:

• a light transmitter capable of generating light signals of two different first and second bandwidths;
• at least one pair of first and second photodiodes to receive light signals from the light transmitter;
• a first conductor electrically connecting the anode of the first photodiode to the cathode of the second photodiode;
• a second conductor electrically connecting the cathode of the first photodiode to the anode of the second photodiode;
• a first light filter disposed on the photoactive surface of the first photodiode that allows the first bandwidth of light to pass;
• a second light filter disposed on the photoactive surface of the second photodiode that allows the second bandwidth of light to pass;
• whereby the light transmitter signals utilizing the first and second bandwidths can be converted by said photodiodes into voltage-phase signals across the first and second conductors.

A state machine comprising:

• a plurality of switches each having two photodiodes wherein the anode of one photodiode is electrically connected via a first conductor to the cathode of the second photodiode, and the cathode of the first photodiode is electrically connected via a second conductor to the anode of the second photodiode, wherein the voltage-phase of the first conductor and the second conductor of the optoelectronic switch is a function of which of the photodiodes of the optoelectronic switch receives a greater amount of light illumination;
• a dielectric light filter layer used to selectively allow only certain bandwidths of light to illuminate each of the photodiodes and wherein the dielectric filter layer allows different bandwidths of the light spectrum to stimulate each of the photodiodes of the switch, each of the switches disposed on a monolithic silicon substrate wherein each switch has three voltage-phases which are activated rapidly by using a mixture of two bandwidths of light;
• a source of two bandwidths of light for programming the switches by activating one of the three voltage phases;
• and means to read electronically the combination of voltage states produced by the switches as digital information.

An optoelectronic position sensor device for determining the location of a light beam, comprising:

• a switch having two photodiodes wherein the anode of one photodiode is electrically connected via a first conductor to the cathode of the second photodiode, and the cathode of the first photodiode is electrically connected via a second conductor to the anode of the second photodiode,
• wherein the voltage-phase of the first conductor and the second conductor of the optoelectronic switch is a function of which of the photodiodes of the optoelectronic switch receives a greater amount of light illumination;
• wherein the components of the switch are fabricated on a monolithic substrate and the anodes and the cathodes of the switch are fabricated at its surface;
• a focusing lens system to focus the light beam onto the surface of the switch whereby the switch can sense the position of the focused light beam on its surface by producing a positive voltage-phase, negative voltage-phase, or a null zero-volt voltage phase depending upon the balance of illumination of the focused light beam upon the two photodiode components of the switch;
• and
• means to electronically analyze the produced voltage-phases so as to indicate the linear position of the light beam on the switch's surface.

An optoelectronic sensor for two-dimensional targeting of an object, comprising:

• an upper and lower switch each having two Dhotodiodes wherein the anode of one photodiode is electrically connected via a first conductor to the cathode of the second photodiode and the cathode of the first photodiode is electrically connected via a second conductor to the anode of the second photodiode,
• wherein the voltage-phase of the first conductor and the second conductor of each optoelectronic switch is a function of which of the photodiodes of the optoelectronic switch receives a greater amount of light illumination;
• wherein the components of the switch are fabricated on a substrate and the anodes and the cathodes of the switch are fabricated at its surface;
• a focusing lens system to focus light from the target object onto the surface of the switch whereby the switch can sense the position of the focused light on its surface by producing a positive voltage-phase, negative voltage-phase, or a null zero-volt voltage phase depending upon the balance of illumination of the focused light upon the two photodiode components of the switch;
• and
• means to electronically analyze the produced voltage-phases so as to indicate the linear position of the light on the switch's surface;
• wherein the upper switch is fabricated from thinned silicon substrate and the upper switch is substantially transparent to the light from the target object and is oriented at 90 degrees rotated from the lower switch, and that the light from the target object also passes through the substantially transparent upper switch onto the lower switch so that together the two switches function as a two-dimensional target sensor;
• and means to electronically analyze the produced voltage-phases of the switches so as to indicate the two-dimensional position of the target object being targeted on the target sensor.

An optoelectronic encoder, comprising:

• a housing;
• a slotted rotor disk inside of the housing;
• two switches each switch having two photodiodes such that the anode of one photodiode is electrically connected via a first conductor to the cathode of the second photodiode, and the cathode of the first photodiode is electrically connected via a second conductor to the anode of the second photodiode,
• wherein the voltage-phase of the first conductor and the second conductor of the switch is a function of which of the photodiodes of the switch receives a greater amount of light illumination;
• wherein the components of the switches are fabricated on a monolithic substrate and the anodes and the cathodes of the switch are fabricated at its surface;
• and the switches are located inside the housing on one side of the slotted rotor disk;
• an encoder light source inside the housing on the other side of the slotted rotor disk;
• means for turning the slotted rotor disk, whereby the light pulse signals created from the light source pass through the moving slots of the rotating disk to create voltage-phase changes in the two switches to produce quadrature electrical signals;
• and
• means to electronically read the quadrature electrical signals produced.