A photometer includes a luminous flux splitter that splits a luminous flux incident from a single light receiving optical system and guides the luminous flux to a finder optical system and a photometric part. A light receiver is arranged at a position to receive at least a part of light split into the finder optical system by the luminous flux splitter and generates an output for light emission profile analysis according to a light reception result.

A blood sample collector can be used to collect a blood sample from a subject. The blood sample collector can be placed in a receptacle of a spectrometer to measure spectral data from the blood sample while the blood sample separates. The container may comprise a window to allow light such as infrared light to pass through the container, with the blood sample at least partially separating within the container between spectral measurements, which can provide improved accuracy of the measurements and additional information regarding the sample. The container may comprise an elongate axis and the container configured for placement in the spectrometer receptacle with the elongate axis extending toward a vertical direction in order to improve gravimetric separation of the blood sample. The spectrometer can be configured to measure the blood sample at a plurality of heights along the sample as the sample separates.

A method for assessing spectroscopic sensor accuracy, includes building an a priori simulation of generalized etalon drift. A spectroscopic sensor is tested to determine use parameters. A specific drift model is generated by applying the determined use parameters to the built a priori simulation of generalized etalon drift. The specific drift model is analyzed to determine whether the spectroscopic sensor is satisfactory.

A reflective relay spectrometer design based on reflective optical relay systems, which is more compact in physical size and superior in spectral imaging quality than previous designs, is disclosed.

An optical device includes: a base that includes a main surface; a movable unit that includes an optical function unit; and an elastic support unit that is connected between the base and the movable unit, and supports the movable unit so that the movable unit is movable along a first direction perpendicular to the main surface. The elastic support unit includes a lever, a first torsion support portion that extends along a second direction perpendicular to the first direction and is connected between the lever and the movable unit, and a second torsion support portion that extends along the second direction and is connected between the lever and the base. A torsional spring constant of the first torsion support portion is greater than a torsional spring constant of the second torsion support portion.

A system for non-invasively interrogating an in vivo sample for measurement of analytes comprises a pulse sensor coupled to the in vivo sample for detect a blood pulse of the sample and for generating a corresponding pulse signal, a laser generator for generating a laser radiation having a wavelength, power and diameter, the laser radiation being directed toward the sample to elicit Raman signals, a laser controller adapted to activate the laser generator, a spectrometer situated to receive the Raman signals and to generate analyte spectral data; and a computing device coupled to the pulse sensor, laser controller and spectrometer which is adapted to correlate the spectral data with the pulse signal based on timing data received from the laser controller in order to isolate spectral components from analytes within the blood of the sample from spectral components from analytes arising from non-blood components of the sample.

In some implementations, an optical device may include an aperture, one or more optical elements, an optical filter, and an optical sensor. The aperture may be configured to receive light. The one or more optical elements may be configured to diffuse the light received by the aperture, direct the diffused light to the optical filter via a folded optical path, wherein a length of the folded optical path is greater than a distance between the aperture and an input surface of the optical filter, and cause the diffused light to be distributed across the input surface of the optical filter. The optical filter may be configured to filter the diffused light distributed across the input surface of the optical filter to pass portions of the diffused light associated with one or more wavelengths to the optical sensor.

The present application discloses an optical micro-electro-mechanical system (MEMS) based monitoring system, comprising: a broadband light source, a tunable optical filter (TOF), an optical etalon, a plurality of optical receivers, a plurality of optical couplers, and a plurality of optical MEM sensors; the TOF is configured to capture transmission, reflection or interference spectrum of the optical MEMS sensors; wherein the peak or depression wavelength in the transmission, reflection or interference spectrum corresponds to a parameter of the pressure, the temperature or the stress, and the peak or depression wavelength can be obtained by comparing with the periodic spectrum of the optical etalon with an absolute wavelength mark; the optical MEMS sensor comprises an optical MEMS resonator. The parameter of the pressure, the temperature or the stress can be obtained by the peak or depression wavelength in the transmission, the reflection or the interference spectrum of the optical MEMS sensor.

A spectroscopic device includes a first optical element for wavelength-dispersing the light, a second optical element for converging the light which has been wavelength-dispersed, a light deflector for changing a trajectory of the converged light, the light deflector being of a transmission type and having an electro-optical effect, a drive power supply that applies a voltage to the light deflector, light receiver that detects at a predetermined position the light of which the trajectory has been changed, and a process unit that derives the wavelength of the detected light from the voltage.

A method of quantifying at least one property of interest of an oil sands ore sample is provided using a laser-induced breakdown spectroscopy (LIBS) method. The property of interest may include bitumen content, water content, particle size information, cation exchange capacity, methylene blue index, mineralogical content (e.g., quartz, total clay, and clay components), amorphous material content, total ash content, and connate water parameter (e.g., conductivity, chloride content, or alkalinity).