Optoelectronic shutter, method of operating the same and optical apparatus including the optoelectronic shutter
First Claim
Patent Images
1. An optoelectronic shutter comprising:
- a phototransistor which generates an output signal from incident input light;
a light emitting diode serially connected to the phototransistor, anda capacitor disposed in parallel to the light emitting diodewherein the light emitting diode outputs output light according to the output signal,wherein the output signal is gain-modulated according to a modulation of a current gain of the phototransistor,wherein the light emitting diode and the phototransistor are stacked on a substrate in a vertical direction.
1 Assignment
0 Petitions
Accused Products
Abstract
An optoelectronic shutter, a method of operating the same, and an optical apparatus including the optoelectronic shutter are provided. The optoelectronic shutter includes a phototransistor which generates an output signal from incident input light and a light emitting diode serially connected to the phototransistor. The light emitting diode outputs output light according to the output signal, and the output signal is gain-modulated according to a modulation of a current gain of the phototransistor.
15 Citations
24 Claims
-
1. An optoelectronic shutter comprising:
-
a phototransistor which generates an output signal from incident input light; a light emitting diode serially connected to the phototransistor, and a capacitor disposed in parallel to the light emitting diode wherein the light emitting diode outputs output light according to the output signal, wherein the output signal is gain-modulated according to a modulation of a current gain of the phototransistor, wherein the light emitting diode and the phototransistor are stacked on a substrate in a vertical direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. A method of operating an optoelectronic shutter including a phototransistor which generates an output signal from incident input light and a light emitting diode serially connected to the phototransistor, wherein the light emitting diode outputs output light according to the output signal, and the output signal is gain-modulated according to a modulation of a current gain of the phototransistor, the method comprising:
-
modulating a base-emitter voltage of the phototransistor to modulate a current gain of the phototransistor, wherein a DC bias voltage is applied to a base of the phototransistor, and an AC voltage for local oscillation of the base-emitter voltage is applied to an emitter of the phototransistor. - View Dependent Claims (24)
-
Specification