The present disclosure describes a Lambertian gas-sensing system that may enable gas sensing in a compact form factor. The Lambertian gas-sensing system may include a hollow cavity, one or more light-emitting diode (LED) illuminators, one or more light-absorption detectors, and a gas exchange manifold. The hollow cavity may mechanically integrate the gas exchange manifold, the one or more LED illuminators, and one or more light-absorption detectors (such as one or more optical detectors). The gas exchange manifold may introduce gas into the hollow cavity and the one or more LED illuminators may emit light into the hollow cavity through one or more ports. The one or more light-absorption detectors may receive light from the hollow cavity through one or more ports.

Disclosed are a device and method for detecting a subsurface defect of an optical component. According to the device and method, a spectral confocal technology, a laser scattering technology and a laser-induced ultrasonic technology are combined, excitation laser and detection laser are simultaneously focused to different depths of the optical component through a dispersion lens set, the excitation laser generates a transient thermal expansion effect on a subsurface of the optical component, the detection laser is used for observing and analyzing ultrasonic vibration of the subsurface defect under an action of the thermal expansion effect, and spatial distribution information and scattered spectral information of scattered light at a position of the subsurface defect are acquired by the spectral confocal technology. The device and method are suitable for nondestructive testing of a finished product of an ultra-precise optical component with a strict requirement on the subsurface defect.

A specimen processing system includes a plate for supporting a specimen system, wherein the specimen system includes a container and a specimen contained therein. The specimen processing system further includes a camera disposed above the plate and configured to generate images of the specimen system, a light source disposed beneath the plate for radiating light towards the plate, a light stop for blocking a portion of the light from reaching the specimen system to produce darkfield illumination of the specimen at the camera, and one or more processors electronically coupled to the camera and configured to track a position of the specimen within the specimen container during a specimen processing protocol based on the images.

Provided are a liquid surface inspection device, an automated analysis device, and a liquid surface inspection method with which instances of contamination can be minimized and the accuracy of the manner in which the surface conditions, such as bubbles or the like, of a liquid substance are detected can be enhanced. The device has: a light illumination unit for illuminating a container holding a liquid substance, as well as the surface of the liquid substance, with light; an image capture unit for acquiring a video image having at least color information and brightness information of light from the container and the liquid substance which are illuminated by the light illumination unit; and a detection unit for using the color information and brightness information in the video image captured by the image capture unit to detect the condition of the liquid surface.

A system for characterizing at least one particle from a fluid sample is disclosed. The system includes a filter disposed upstream of an outlet, and a luminaire configured to illuminate the at least one particle at an oblique angle. An imaging device is configured to capture and process images of the illuminated at least one particle as it rests on the filter for characterizing the at least one particle. A system for characterizing at least one particle using bright field illumination is also disclosed. A method for characterizing particulates in a fluid sample using at least one of oblique angle and bright field illumination is also disclosed.

An apparatus for determining the presence or concentration of target molecules comprises: a radiation source; a surface; a waveguide; a detector; and a spectral filter. The radiation source is operable to produce electromagnetic radiation. The surface defines a two dimensional array of receptor sites. The waveguide is arranged to receive the electromagnetic radiation produced by the radiation source, divide the electromagnetic radiation and direct a portion of the electromagnetic radiation to each one of a two dimensional array of receptor sites. The detector comprises a two dimensional array of sensing elements, each sensing element arranged to receive electromagnetic radiation from a different one of the two dimensional array of receptor sites. The spectral filter is provided between the surface and the detector.

A method for detecting at least one property of a plant product, the method including: directing source light including ultraviolet (UV) light at UV wavelengths and polarized visible and/or near-infrared (VIS/NIR) light at VIS/NIR wavelengths onto a region of the plant product; blocking the polarized VIS/NIR light of the source light, and blocking polarized specular reflection from the region of the plant product, from being transmitted to a visible and/or near-infrared (VIS/NIR) spectrometer; and transmitting a portion of emitted light caused by fluorescence and/or diffuse reflection from the region of the plant product to the visible and/or near-infrared (VIS/NIR) spectrometer.

Systems and methods for analysis of a whole blood sample from an individual to determine the platelet function and coagulation status of the individual in a substantially automated and efficient matter. Also provided here are systems, reagent kits, and methods for concurrent assessment of platelet function and coagulation as they interact during hemostasis.

The single-use disposable spectrophotometer described herein can measure one or more blood chemistry analytes from a drop of whole blood. A passive filtration system takes whole blood and delivers plasma along with a dissolved reporter molecule to one or more spectrophotometers which can operate with narrow band optical spectrum centered on an optical detection frequency. The spectrophotometer detects the changes in absorption of the plasma as a result of a chemistry reaction to determine the concentration or activity of one or more analytes.

The optical device for measuring at least one of reflected light (BRDF) and transmitted light (BTDF) from a sample, in all spherical directions of space around the sample, for each spherical direction of incident light includes a light source, and a goniophotometer configured to measure at least one of: directions of the incident light in spherical coordinates, and directions of the reflected light in spherical coordinates. The device further includes a dispersive screen, and a multi-sensor imaging device. The goniophotometer includes a first articulated arm supporting the light source; and a second articulated arm supporting the sample or a sample holder.