An interrogation device for detecting luminescent light produced by analytes in a sample excited by multiple excitation light beams each having individual spectral contents, comprising a plurality of light sources each generating an excitation light beam; at least one detector for detecting the luminescent light produced by the sample; and an optical assembly defining distinct and fixed excitation light paths for each of the excitation light beams from the light sources to a common excitation site on the sample and defining a shared luminescence light path for the luminescent light from the excitation site on sample to the at least one detector, the excitation light paths and the luminescence light path being on a same side of the sample, the optical assembly including sample-side optics projecting the excitation light towards the sample and collecting luminescent light from the sample.

An optoelectronic module operable to acquire distance data and spectral data includes an array of demodulation pixels and an array of spectral filters. The demodulation pixels can possess an intrinsic wavelength-dependent sensitivity, wherein the intrinsic wavelength-dependent sensitivity can be offset by an intensity balancing micro-lens array in some cases. In some cases, the intrinsic wavelength-dependent sensitivity can be offset by a combined filter array, while in other cases the intrinsic wavelength-dependent sensitivity can be offset by an intensity balancing filter array. Still in other cases, the demodulation pixels can be operable in such as to offset the intrinsic wavelength-dependent sensitivity.

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.

An optical sensor system may include a light source. The optical sensor system may include a concentrator component proximate to the light source and configured to concentrate light from the light source with respect to a measurement target. The optical sensor system may include a collection component that includes an array of at least two components configured to receive light reflected or transmitted from the measurement target. The optical sensor system may include may a sensor. The optical sensor system may include a filter provided between the collection component and the sensor.

A device and method for identifying solid and liquid materials use near-infrared transmission spectroscopy combined with multivariate calibration methods for analysis of the spectral data. Near-infrared transmission spectroscopy is employed within either the 700-1100 nm or the 900-1700 nm wavelength range to identify solid or liquid materials and determine whether they match specific known materials. Uses include identifying solid (including powdered) and liquid materials with a fast measurement cycle time of about 2 to 15 seconds and with a method that requires no sample preparation, as well as quantitative analysis to determine the concentration of one or more chemical components in a solid or liquid sample that consists of a mixture of components. A primary application of such analysis includes detection of counterfeit drug tablets, capsules and liquid medications.

An optical assembly is disclosed including two laterally variable bandpass optical filters stacked at a fixed distance from each other, so that the upstream filter functions as a spatial filter for the downstream filter. The lateral displacement may cause a suppression of the oblique beam when transmission passbands at impinging locations of the oblique beam onto the upstream and downstream filters do not overlap. A photodetector array may be disposed downstream of the downstream filter. The optical assembly may be coupled via a variety of optical conduits or optical fibers for spectroscopic measurements of a flowing sample.

A color measurement device includes a light source for illuminating an object with light; a dispersing portion for spectrally dispersing light emitted and reflected by the object; a light receptor for receiving the light dispersed by the dispersing portion; and a controller for effecting color measurement based on a result of light reception of the light receptor from the object which is an image formed on a recording material; wherein the emitted light has a first intensity of light in a first wavelength range and a second intensity lower than the first intensity in a second wavelength range, and wherein the controller deduces a value relating to color measurement for the second wavelength range on the basis of a result of light reception of the light receptor for the first wavelength range.

A spectrometer includes a plurality of photodetectors, an anti-reflection layer, a grating layer, a distant layer, and a collimator. The anti-reflection layer is disposed on the plurality of photodetectors. The grating layer is disposed above the anti-reflection layer and includes a plurality of grating structures to spread a light into a spectrum to the plurality of photodetectors through the distant layer. The distant layer continuously extends from the grating layer to the anti-reflection layer, the distant layer has a thickness in a range from 400 m to 2000 m, and a refractive index of the grating layer is greater than a refractive index of the distant layer. The collimator is disposed above the grating layer, in which the collimator is configured to confine an incident angle of the light from a first micro-lens.

A disposable photometric measurement tip comprising a polymer tip, the polymer tip having a capillary filling channel, the capillary filing channel having an opening at a distal end of the polymer tip, a wave guide channel acting as an optical input coupling and a wave guide channel acting as an optical output coupling, each of the wave guide channels having an opening at a proximal end of the polymer tip wherein the capillary filling channel, the wave guide channel acting as an optical input coupling and the wave guide channel acting as an optical output coupling are connected to each other.

A hand held spectrometer is used to illuminate the object and measure the one or more spectra. The spectral data of the object can be used to determine one or more attributes of the object. In many embodiments, the spectrometer is coupled to a database of spectral information that can be used to determine the attributes of the object. The spectrometer system may comprise a hand held communication device coupled to a spectrometer, in which the user can input and receive data related to the measured object with the hand held communication device. The embodiments disclosed herein allow many users to share object data with many people, in order to provide many people with actionable intelligence in response to spectral data.