Abstract: An optical sensor system comprises an array of optical sensors arranged on an integrated circuit and a plurality of filters with the bottom surface of the plurality of filters located above the top surface of the array of optical sensors. The optical sensor system further comprises an angle-of-incidence layer that includes a top surface, a bottom surface, and a thickness Y, where the bottom surface of the angle-of-incidence layer is located a predetermined distance X from the top surface of the plurality of filters and the angle-of-incidence layer includes a plurality of collimating elements, with each collimating element of the angle-of-incidence layer having an aperture width Z.

Abstract: An imaging device includes a plurality of optical sensors on an integrated circuit and a plurality of sets of interference filters, where a set of interference filters of the plurality of sets of interference filters includes a plurality of interference filters that are arranged in a pattern with each interference filter of a set of filters being configured to pass light in a different wavelength range. A plurality of sets of absorption filters is included, with a set of absorption filters of the plurality of sets of absorption filters including a plurality of absorption filters arranged in a pattern and each absorption filter is associated with one or more interference filters to create an absorption filter and interference filter pair. Each absorption filter and interference filter pair is associated with one or more optical sensors and is configured to pass light in a narrower wavelength range than the absorption filter alone.

Abstract: An imaging system includes a plurality of optical sensors arranged on an integrated circuit in an array with a plurality of rows and a plurality of columns, with a plurality of sets of filters configured over the plurality of sensors, with each filter of a set of filters being associated with a corresponding optical sensor of the array of optical sensors to provide a filter/sensor pair and each filter of a set of filters also configured to pass a target wavelength range of light.

Abstract: An optical sensor system comprises an array of optical sensors arranged on an integrated circuit and a plurality of filters with the bottom surface of the plurality of filters located above the top surface of the array of optical sensors. The optical sensor system further comprises an angle-of-incidence layer that includes a top surface, a bottom surface, and a thickness Y, where the bottom surface of the angle-of-incidence layer is located a predetermined distance X from the top surface of the plurality of filters and the angle-of-incidence layer includes a plurality of collimating elements, with each collimating element of the angle-of-incidence layer having an aperture width Z.

Abstract: A user device includes a spectrometer module adapted to acquire spectral information and output spectral data representing the acquired spectral information, memory adapted to store predetermined calibration data, a processing unit configured to substantially correct the spectral data using the stored calibration data and an electronic circuit module, The electronic circuit module includes a light sensitive area for detecting incident light of a plurality of wavelengths within a set wavelength interval, detected light of a plurality of wavelengths forming spectral data and the light sensitive area including a plurality of light detectors. Each light detector is adapted to detect light of a selected wavelength.

Abstract: An imaging system includes a plurality of optical sensors arranged on an integrated circuit in an array with a plurality of rows and a plurality of columns. The system includes an interface communicating with the plurality of optical sensors, memory storing operational instructions and processing circuitry configured to sample an image using the plurality of optical sensors in a first mode and sample at least a portion of the image sequentially on a row-by-row basis at a predetermined sampling rate in a second mode to produce row by row sample outputs. The processing circuitry is further configured to initiate sampling at least some rows of the plurality of rows of optical sensors using different time stamps.

Abstract: A method for one or more modules of one or more processors of a spectral sensor system begins by receiving a plurality of synthetic spectra, where a synthetic spectrum of the plurality of synthetic spectra includes one or more known deviations from a reference spectrum. The method continues by generating a spectral output for each synthetic spectrum of the plurality of synthetic spectra and then training an artificial intelligence engine, using the combined spectral output to generate a trained neural network. The method then continues by calibrating, based on the trained neural network, a spectral response generated by another spectral sensor.

Abstract: A method for transmitting covertly employs three features in a novel combination to create a transmission waveform that has no detectable artifacts. First, the method employs spread spectrum, such as a direct sequence spread spectrum signal, to transmit the power level below the noise floor. Second, the method modulates the phase of each chip in the spread spectrum signal using a chaotic sequence. Third, the method filters the transmission signal using a pulse shaped filter to depress blind detection features in the amplitude modulation and higher order power spectral densities. The novel combination of these features results in a practically invisible and undetectable transmission waveform. Many other features are disclosed herein to optimize this combination.

Abstract: A sensor system includes an array of optical sensors on an integrated circuit and a plurality of sets of optical filters atop at least a portion of the array. Each set of optical filters is associated with a set of optical sensors of the array, with a set of optical filters including a plurality of optical filters, with each optical filter being configured to pass light in a different wavelength range. A first interface is configured to interface with the optical sensors and first processing circuitry that is configured to execute operational instructions for receiving an output signal representative of received light from the optical sensors and determining a spectral response for each set of optical sensors.

Abstract: A system for imaging includes an array of optical sensors having a respective top surface and a respective bottom surface and a first plurality of sets of optical filters, each set of optical filters of the first plurality of sets of optical filters being associated with a respective set of optical sensors of the array. The system further includes a second plurality of sets of optical filters, each set of optical filters of the second plurality of sets of optical filters being associated with a respective set of optical sensors of the array, each optical filter of a set of optical filters of the second plurality of sets of optical filters configured to pass light of a respective wavelength range, where the second plurality of sets of optical filters are interspersed spatially across the top surface of the array of optical sensors.

Abstract: A method for transmitting covertly employs three features in a novel combination to create a transmission waveform that has no detectable artifacts. First, the method employs spread spectrum, such as a direct sequence spread spectrum signal, to transmit the power level below the noise floor. Second, the method modulates the phase of each chip in the spread spectrum signal using a chaotic sequence. Third, the method filters the transmission signal using a pulse shaped filter to depress blind detection features in the amplitude modulation and higher order power spectral densities. The novel combination of these features results in a practically invisible and undetectable transmission waveform. Many other features are disclosed herein to optimize this combination.

Abstract: A communications waveform schema integrates security at the physical layer and has many desirable features of traditional LPI/LPD waveforms. To provide additional covert aspects in communications a single-carrier base waveform is divided up in frequency and/or time and redistributed pseudo-randomly among subcarriers and channel assignment. Multiple matched polyphase filterbank channelizers are used so that each individual channel has a bandwidth well below a Nyquist rate for information carried by the base waveform, thereby making full data extraction from any individual channels a theoretic impossibility. The individual channels do not carry enough information from the base waveform to be useful and only in the aggregate can the entire base waveform be reconstructed. Individual channels are up-converted onto pseudo-randomly chosen carrier frequencies within the bandwidth of the high rate hardware IF in such a way as to obfuscate the order in which they occur in the base waveform.

Abstract: A highly efficient distributed synchronization (DS) uses waveforms that can be easily detected by the receiver while possessing desirable LPI/LPD characteristics. Differentially encoding the synchronization pattern reduces receiver computation because signal detection search space is collapsed to a single dimension. Dissimilar bursts are used for synchronization to remove correlated energy between different sets, while maintaining the same differentially encoded pattern. The DS functions only as a whole and not as individual carriers or channels. No single carrier conveys any useful information. All cross-channel coherence required for proper alignment and subsequent detection of the distributed synchronization set of bursts is possible due to large transmission hardware IF bandwidth.

Abstract: A sensor system has a plurality of optical sensors configured in an array on an integrated circuit and a lens system located proximal to a top surface of the array, where the intersection of the optical axis of the lens system with the plurality of optical sensors defines a reference point for light passing through the lens system. The sensor system includes a plurality of sets of optical filters overlaying the array between the lens system and the array, with each set of optical filters being associated with a set of optical sensors of the plurality of optical sensors and a set of optical filters of the plurality of sets of optical filters includes a plurality of optical filters where each set of optical filters has a center wavelength for light transmitted through the set of optical filters.

Abstract: An optical sensor system includes a plurality of sets of optical sensors implemented on a substrate, with a plurality of sets of optical filters, wherein a set of optical filters of the plurality of sets of optical filters is associated with a set of optical sensors and a set of optical filters of the plurality of sets of optical filters includes a plurality of optical filters that are arranged in a pattern, with each optical filter of the plurality of optical filters configured to pass light in a different wavelength range of a predefined spectral range. Each set of optical filters operates to provide a bandpass response corresponding to the predefined spectral range and a set of optical filters is located atop an associated set of optical sensors, where at least two sets of optical filters of the plurality of sets of optical filters are configured to provide different bandpass responses.

Abstract: A method for measuring body parameters includes irradiating a body area during a first time window using a first illumination source of a predetermined range of optical wavelengths and sampling, by a first plurality of spectral sensors, a first received light spectrum for the body area. The method continues by outputting, via one or more interfaces, information representative of the first received light spectrum during the first time window to a processor. The method continues by irradiating the body area during a second time window using a second illumination source of a predetermined range of optical wavelengths and sampling, by a second plurality of spectral sensors, a second received light spectrum for the body area. The method continues by outputting, via the one or more interfaces, information representative of the second received light spectrum during the first time window to the processor.

Abstract: A mobile device includes one or more spectrometers, each with a plurality of spectral filters overlaying optical sensors, each of the one or more spectrometers having a sensing range within a predetermined range of optical wavelengths. Each of the one or more spectrometers is further positioned in the mobile device to capture light radiation incident to the mobile device and output information representative of captured light radiation to a processing module adapted to receive the output information and determine an accumulated light radiation for the mobile device. A notification engine is adapted to signal a user when the accumulated light radiation exceeds a predetermined threshold.

Abstract: A user device for imaging a scene includes a first plurality of optical sensors coupled to a substrate for collecting an image of a scene and a second plurality of optical sensors coupled to the substrate for collecting spectral information from the image. A plurality of sets of interference filters are associated with the second plurality of optical sensors, where each interference filter of a set of interference filters is configured to pass light in one of a plurality of wavelength ranges to one or more optical sensors of the second plurality of optical sensors and each optical sensor of the plurality of optical sensors is associated with a spatial area of the image. A processor is adapted to receive an output from the first plurality of optical sensors and the second plurality of optical sensors and determine, based on the spectral information, a target area within the scene.

Abstract: A system for imaging a scene, includes a plurality of optical sensors arranged on an integrated circuit and a plurality of sets of interference filters, where each set of interference filters of the plurality of sets of interference filters includes a plurality of interference filters that are arranged in a pattern and each interference filter of the plurality of filters is configured to pass light in a different wavelength range, where each set of interference filters of the plurality of interference filters is associated with a spatial area of the scene. The system includes a plurality of rejection filters arranged in a pattern under each set of interference filters, where each rejection filter of the plurality of rejection filters is configured to substantially reject light of predetermined wavelengths. The system further includes one or more processors adapted to provide a spectral response for a spatial area of the scene associated with the set of interference filters.

Abstract: A sensor system comprises a plurality of sets optical sensors arranged on an integrated circuit, the plurality of sets optical sensors having a respective top surface. The sensor system further comprising an interface between the plurality of optical sensors and a processing device configured to transmit information there between and an array of optical filters having a respective bottom surface and a respective top surface, where the bottom surface of the optical filter array is located proximal to the top surface of the plurality of sets optical sensors and each optical filter of the optical filter array is configured to pass a target wavelength range of light to a set of optical sensors. The processor is configured to receive an output from each optical sensor in a set of optical sensors and determine a corrected filter response for the set of optical sensors using crosstalk from light transmitted through optical filters adjacent to the set of optical sensors.