TWO-DIMENSIONAL PHOTONIC INTEGRATED CIRCUIT OPTICAL PHASED ARRAY FOR IMAGING SYSTEMS
Aspects of the disclosure provide a device and method for capturing one or more images using a photonic integrated circuit (PIC) optical phased array (OPA) based imaging system. The method may include processing the environmentally or artificially-lit received image using one or more injected control wavelengths or wavefronts to enable electronic control of functionality such as real time color filtering, glint removal or other intensity image manipulation, image stabilization, collection of multiple images for panoramic composites, focal plane adjustment and/or other image optimization manipulations based on user inputs. These system level functionalities may be accomplished with a device utilizing a plurality of optical nano-antenna elements, plurality of phase and amplitude modulators, plurality of measurement photodiodes and plurality of other associated photonic constructs along with one or more CMOS processors to process the received image.
1 . A method of capturing one or more images using an imaging device comprising:
generating, by one or more processors of an imaging device, one or more control wavelengths based on one or more user inputs;
receiving, at an optical phased array (OPA), light from an environment of the imaging device;
driving, by the one or more processors of the imaging device, a plurality of phase and amplitude modulators of the OPA to apply the one or more control wavelengths to process the received light; and
capturing, by the one or more processors of the imaging device, an image based on the processed received light.
2 . The method of claim 1 , wherein:
generating, by the one or more processors of the imaging device, the one or more control wavelengths based on the one or more user inputs includes generating a first control wavelength and a second control wavelength;
receiving, at the OPA, light from the environment of the imaging device includes receiving light at a first time step and a second time step;
driving, by the one or more processors of the imaging device, the plurality of phase and amplitude modulators of the OPA to apply the one or more control wavelengths to process the received light includes driving the plurality of phase and amplitude modulators at the first time step to apply the first control wavelength to process the light received at the first time step and driving the plurality of phase and amplitude modulators at the second time step to apply the second control wavelength to process the light received at the second time step; and
capturing, by the one or more processors of the imaging device, an image based on the processed received light includes capturing a first image at the first time step based on the processed light received at the first time step and capturing a second image at the second time step based on the processed light received at the second time step.
3 . The method of claim 2 , further comprising:
generating, by the one or more processors of the imaging device, a composite image of the first image and the second image.
4 . The method of claim 1 , further comprising:
transmitting, by the OPA of the imaging device, the one or more control wavelengths; reflecting, by the OPA of the imaging device, the one or more control wavelengths back; and
receiving, by OPA of the imaging device, the one or more control wavelengths.
5 . The method of claim 1 , wherein the one or more user inputs are received from a user interface.
6 . The method of claim 1 , wherein driving, by the one or more processors of the imaging device, the plurality of phase and amplitude modulators of the OPA to apply the one or more control wavelengths to process the received light includes:
measuring, by one or more photodiodes, one or more measurements associated with the one or more control wavelengths; and
driving, the plurality of phase and amplitude modulators based on the one or more measured values associated with the one or more control wavelengths.
7 . The method of claim 1 , wherein driving, by the one or more processors of the imaging device, the plurality of phase and amplitude modulators of the OPA to apply the one or more control wavelengths to process the received light includes:
measuring, by the one or more photodiodes, one or more measurements associated with the received light; and
driving, the plurality of phase and amplitude modulators based on the one or more measurements associated with the received light.
8 . The method of claim 1 , wherein driving, by the one or more processors of the imaging device, the plurality of phase and amplitude modulators of the OPA to apply the one or more control wavelengths to process the received light includes:
measuring, by one or more photodiodes, one or more measurements associated with the one or more control wavelengths and the received light; and
driving, the plurality of phase and amplitude modulators based on the one or more measured values associated with the one or more control wavelengths and the received light.
9 . The method of claim 8 , wherein the one or more measurements are at least one of i) intensity; ii) power; and iii) relative phase.
10 . The method of claim 1 , further comprising:
transmitting, by the OPA, the processed received light to a second OPA; and
transmitting, by the second OPA, the processed received light to a focal plane array (FPA) of the imaging device.
11 . The method of claim 10 further comprising:
adjusting, by an amplitude modulator array of the FPA, an amount of light received at one or more elements of the FPA.
12 . The method of claim 10 , further comprising:
driving, by the one or more processors of the imaging device, a plurality of phase and amplitude modulators of the second OPA to apply the one or more control wavelengths to further process the processed received light.
13 . The method of claim 10 , wherein the one or more control wavelengths are a plurality of control wavelengths.
14 . The method of claim 13 , wherein driving, by the one or more processors of the imaging device, the plurality of phase and amplitude modulators of the OPA to apply the plurality of control wavelengths to process the received light includes applying a first control wavelength of the plurality of control wavelengths; and
wherein, driving, by the one or more processors of the imaging device, the plurality of phase and amplitude modulators of the second OPA to apply the one or more control wavelengths to further process the processed received light includes applying a second control wavelength of the plurality of control wavelengths, wherein the second control wavelength is different from the first control wavelength.
15 . An imaging device configured to capture one or more images, the imaging device comprising:
an optical phased array (OPA) receiver, the OPA receiver comprising:
a plurality of emitters configured to transmit and receive light,
a plurality of phase and amplitude modulations configured to modulate light propagating through the imaging device, and
one or more photodiodes configured to measure one or more values associated with light propagating through the imaging device,
a focal plane array (FPA) OPA, the FPA OPA comprising:
a plurality of emitters configured to transmit and receive light,
a plurality of phase and amplitude modulations configured to modulate light propagating through the imaging device, and
one or more photodiodes configured to measure one or more values associated with light propagating through the imaging device;
a control unit, the control unit comprising:
one or more processors, and
one or more light sources configured to generate light; and
a FPA configured to receive light from the FPA OPA and record an image based on the received light;
wherein the OPA receiver, the FPA OPA, and the control unit are disposed on a photonics integrated circuit (PIC).
16 . The imaging device of claim 15 , wherein the OPA receiver further includes one or more reflectors associated with an emitter the plurality of the emitters, the one or more reflectors configured to reflect one or more control wavelengths back to the emitter of the plurality of emitters.
17 . The imaging device of claim 15 , further comprising one or more micro-lens arrays associated with at least one of i) the OPA receiver, and ii) the FPA OPA.
18 . The imaging device of claim 15 , further comprising one or more sensors configured to collect one or more sensor measurements, wherein the one or more sensors include at least one of i) a gyroscope, an accelerometer, and inertial measurement unit (IMU).
19 . The imaging device of claim 15 , wherein the imaging device is arranged in a stack configuration.
20 . The imaging device of claim 15 , wherein the one or more processors are configured to:
generate, one or more control wavelengths based on one or more user inputs;
drive at least one of i) the plurality of phase and amplitude modulators of the OPA receiver to apply the one or more control wavelengths to process received light, and ii) the plurality of phase and amplitude modulators of the FPA OPA to apply the one or more control wavelengths to process received light; and
capture an image based on the processed received light.