A spectrometer for detecting an electromagnetic (EM) wave spectrum having one or more wavelength components within a spectral band of interest, and a method of detecting an electromagnetic (EM) wave spectrum having one or more wavelength components within a spectral band of interest. The method uses an entrance aperture; a dispersion and imaging optics containing at least one dispersion element; an exit aperture; a collection optics; and at least one single-pixel detector, each single-pixel detector sensitive to one or more of the wavelength components; and the method comprises the steps of spatially encoding at least one entrance slit of the entrance aperture along a direction substantially transverse to a direction of dispersion of the dispersion and imaging optics; creating, using the dispersion and imaging optics, dispersed images of the entrance aperture on a plane of the exit aperture, such that respective images at the different wavelength components are offset by different amounts of displacements along the direction of dispersion; spatially encoding a plurality of exit slits of the exit aperture along the direction substantially transverse to the direction of dispersion, wherein the exit aperture comprises a plurality of exit slits arranged in the direction of dispersion; gathering, using the collection optics, a total EM wave energy that enters the entrance aperture and exits the exit aperture to one of the at least one single-pixel detectors; changing at least one of an encoding pattern of the at least one entrance slits and an encoding pattern of the plurality of exit slits for a number of times; and measuring the output of the at least one detector for respective ones of the number of times for reconstructing the EM wave spectrum.

A colorimetric system includes: a communication section that receives the color value of a color for which colorimetry has been performed by a colorimetric device that performs colorimetry; and a comparison processing section that performs comparison processing between the received color value and the color value of a reference color. The comparison processing section decides whether a line colorimetry error occurred on a line under colorimetry. When the comparison processing section decides that a line colorimetry error occurred, the communication section transmits information about the line colorimetry error to the colorimetric device.

The colorimetric system of this embodiment includes the reception section that accepts generation of a color group including a plurality of reference colors to be compared with a color measured by a colorimetric section and an input of a color group name and the display processor that performs a process of displaying the generated color group on the display section. Furthermore, the reception section accepts a selection of a color group of a colorimetry target and the display processor performs a process of displaying a name of the selected color group in the display section.

An electronic device may include sensors such as a visible-light image sensor for capturing images. The sensors may also include optical sensors that operate at other wavelengths. An infrared light sensor may be used to gather an infrared light spectrum of a target object. The infrared light sensor may have a beam steerer and other adjustable components such as adjustable lenses and adjustable polarizers. During operation, an infrared beam emitted by the infrared light sensor may be steered onto the target object using information from a captured visible-light image and/or other sensor data such as distance sensor data, orientation sensor data, three-dimensional image sensor data, and data from other sensors. Infrared spectra, visible-light camera images, and/or data from other sensors may be used in characterizing target objects so that notifications can be provided to a user and other actions taken.

A novel method and system for enhanced-resolution THz imaging whereby an enhanced-resolution THz image is developed by deconvolution of the original THz image that is developed using THz signals that are manipulated in time-domain and/or in frequency-domain and a point spread function (PSF) that is developed according to an equation wherein said THz signals in time-domain and/or frequency-domain are input parameters. By using this method and system, enhanced-resolution THz images are developed for detecting traces of symptoms of COVID-19 as small as a drop of water. Said novel method and system for enhanced-resolution THz imaging is used for developing a device, and method, that is: (a) rapid, (b) economical, (c) able to perform measurements remotely, (d) non-invasive. This device, and method, is capable of detecting symptoms of COVID-19 such as runny nose, congestion, and cough. The person under examination may or may not wear a face covering mask. This device, and method, is capable of performing examination remotely and without needing the person to remove the mask.

An electronic device includes at least one grid structure that extends in rows and columns of a pixel array including a plurality of imaging pixels and is structured to separate the imaging pixels from one another to provide optical isolation between two adjacent imaging pixels, a grid shutter coupled to the grid structure and configured to allow a gas to enter the grid structure by opening a passage for the gas or block the gas from entering the grid structure by closing the passage in the grid structure, and a gas detection controller configured to identify the gas flowing into the grid structure based on an image that is acquired by the image sensor when the passage for the gas in the grid structure is opened to allow the gas to be present in the grid structure.

Embodiments described herein generally relate to: sensing and/or authentication using luminescence imaging; diagnostic assays, systems, and related methods; temporal thermal sensing and related methods; and/or to emissive species, such as those excitable by white light, and related systems and methods.

A handheld Surface-Enhanced Raman Spectroscopy (SERS) device for detecting phenylalanine (Phe) in a sample collected from a subject, the device comprising a laser generator configured to produce a laser beam; a nanoporous anodic aluminum oxide (NAAO) substrate configured to receive the sample collected from the subject; and a light sensor configured to receive a light.

The invention is a system for color analysis, which comprises a hand-held device and a working platform. The hand-held device is provided with a camera and installed with analysis software. The work platform is placed with an object to be tested, a standard color carrier is installed at both front and rear sides or at both left and right sides of the object to be tested, a positioning frame extends upward around the working platform, the positioning frame and the working platform are mutually formed an inclination angle, and the positioning frame is used to fix the hand-held device. In this way, the camera can shoot the working platform in an inclined direction, and then the analysis software is used to compare a color difference between the object to be tested and the standard color carrier to obtain analysis result of the object to be tested.

Optical spectrometers may be used to determine the spectral components of electromagnetic waves. Spectrometers may be large, bulky devices and may require waves to enter at a nearly direct angle of incidence in order to record a measurement. What is disclosed is an ultra-compact spectrometer with nanophotonic components as light dispersion technology. Nanophotonic components may contain metasurfaces and Bragg filters. Each metasurface may contain light scattering nanostructures that may be randomized to create a large input angle, and the Bragg filter may result in the light dispersion independent of the input angle. The spectrometer may be capable of handling about 200 nm bandwidth. The ultra-compact spectrometer may be able to read image data in the visible (400-600 nm) and to read spectral data in the near-infrared (700-900 nm) wavelength range. The surface area of the spectrometer may be about 1 mm.sup.2, allowing it to fit on mobile devices.