A Raman sensor includes a light source assembly having a plurality of light sources configured to emit light to a plurality of skin points of skin, each of the plurality of skin points having a predetermined separation distance from a light collection region of the skin from which Raman scattered light is collected; a light collector configured to collect the Raman scattered light from the light collection region of the skin; and a detector configured to detect the collected Raman scattered light.

The disclosure relates to an optical spectrometer (1) for spectrally resolved two-dimensional imaging of an object (0), comprising a dispersing device (2) arranged to disperse radiation from object (0), a multi-lens array arrangement (3) arranged to receive the dispersed radiation from the dispersing device (2), a two-dimensional detector (4) arranged to receive the dispersed radiation as directed by the multi-lens array arrangement (3), wherein the optical spectrometer (1) further comprises a collimating arrangement (5) for collimating the radiation from object (0) before the radiation reaches the dispersing device (2), the collimating arrangement (5) comprising a diffusing plate (6) for diffusing the radiation and an optical micro-channel component (7) arranged to receive the diffused radiation comprising a plurality of parallel and linear optical micro-channels directed towards the dispersing device (2). The disclosure further relates to a method for spectrally resolved two-dimensional imaging of an object (0).

Optical property measurement using a sensor behind a display screen Examples of this application disclose a method for measuring optical properties of a target. The method comprises illuminating the target with an illumination area with a display screen in contact with the target, and analysing signals reflected from the target and transmitted back through the display screen to a sensor positioned behind the display screen, to determine the optical properties of the target.

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.

A spectral sensor comprising a Fabry-Perot interferometer having a pair of reflectors, a photodetector located beneath the Fabry-Perot interferometer, a capacitance measurement circuit configured to measure a capacitance of the Fabry-Perot interferometer, and a controller configured to control a voltage applied across the reflectors of the Fabry-Perot interferometer.

A system for real-time assessment of systemic hydration includes a light source configured to operably emit light of first and second wavelengths; means for delivering the emitted light to a target site to excite at least one first spot at the target site, and collecting Raman scattering light scattered from the target site at a plurality of second spots; a detector coupled with said means for obtaining a plurality of spatially offset Raman spectra from the collected Raman scattering light, each spatially offset Raman spectrum corresponding to a respective second spot of the target site and associated with a depth of tissues at which the Raman scattering light is scattered; and a controller configured to process the plurality of spatially offset Raman spectra so as to identify spectral features from the plurality of spatially offset Raman spectra, and assess systemic hydration from the identified spectral features.

Embodiments of the present invention are directed to lightweight, portable spectrograph systems configured for applications in high-throughput crop phenotyping and plant health assessment, and associated methods.

A spectroscopic module includes a support body having a bottom wall portion and a side wall portion surrounding a space on one side of the bottom wall portion, a spectroscopic portion provided on the one side of the bottom wall portion and having a plurality of grating grooves, a photodetector attached to the side wall portion so as to face the spectroscopic portion via the space and having a plurality of photodetection channels, a plurality of first terminals provided on a surface of the support body on a side opposite to the space so as to be disposed along the surface of the support body and electrically connected to the photodetector, and a wiring unit having a plurality of second terminals respectively facing the plurality of first terminals and respectively joined to the plurality of first terminals and a plurality of third terminals respectively and electrically connected to the plurality of second terminals.

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.

Aspects relate to a spectral analyzer that can be used for biological sample detection. The spectral analyzer includes an optical window configured to receive a sample and a spectral sensor including a chassis having various component assembled thereon. Examples of components may include a light source, a light modulator, illumination and collection optical elements, a detector, and a processor. The spectral analyzer is configured to obtain spectral data representative of a spectrum of the sample using, for example, an artificial intelligence (AI) engine. The spectral analyzer further includes a thermal separator positioned between the light modulator and the light source.