An apparatus for detecting one or more properties of a downhole fluid includes a housing. The apparatus also includes a location-sensitive optical detector, arranged within a chamber formed by the housing. The apparatus further includes a light source, arranged within the chamber. The apparatus also includes a lens, positioned at an end of the housing, the lens preferably having a flat side and a curved side, the flat side positioned proximate the chamber to position the flat side closer to the light source than the curved side. The apparatus further includes a mirror, arranged outside the housing.

A method of performing antimicrobial susceptibility testing (AST) on a sample uses a reader device that mounts on a mobile phone having a camera. A microtiter plate containing wells preloaded with the bacteria-containing sample, growth medium, and drugs of differing concentrations is loaded into the reader device. The wells are illuminated using an array of illumination sources contained in the reader device. Images of the wells are acquired with the camera of the mobile phone. In one embodiment, the images are transmitted to a separate computing device for processing to classify each well as turbid or not turbid and generating MIC values and a susceptibility characterization for each drug in the panel based on the turbidity classification of the array of wells. The MIC values and the susceptibility characterizations for each drug are transmitted or returned to the mobile phone for display thereon.

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.

Systems for measuring a concentration of a target species include a first and second tunable diode laser generating laser light at a respective first and second wavelength each corresponding to respective absorption lines of the target species. A first optical fiber is optically coupled to the first tunable diode laser, and does not support a fundamental mode at the second wavelength. A second optical fiber is coupled to the second tunable diode laser and does not support a fundamental mode at the first wavelength. A fiber bundle includes respective distal ends of the first and second optical fibers, which are stripped of their respective coatings and arranged with their claddings adjacent to each other. A pitch head is configured to project respective optical beams from the fiber bundle through a measurement zone. A catch head located across the measurement zone receives the projected beams and directs them to a sensor.

A fluid sensor includes a substrate having a top main surface region, wherein the top main surface region of the substrate forms a common system plane of the fluid sensor, a thermal radiation emitter on the top main surface region of the substrate, an optical filter structure on the top main surface region of the substrate, a waveguide on the main top surface region of the substrate, and a thermal radiation detector on the top main surface region of the substrate, wherein the thermal radiation detector provides a detector output signal based on a radiation strength of the filtered thermal radiation received from the waveguide.

One aspect relates to a bioreactor and/or mixing container that includes an outer wall and a spectroscopy cell arranged in and/or on the outer wall. The spectroscopy cell includes a first optical area and a second optical area arranged opposite the first optical area. The first optical area and the second optical area can be set at at least two different distances from one another. A specimen-receiving area is located between the first optical area and the second optical area.

Hardware and control software for use in the field of digital imaging and spectroscopy. More particularly, a hardware and software system that simultaneously measures electromagnetic energy as quantities of photons in distinct wavelength regions across the ultraviolet, visible, and infrared spectrum. The system records the measurements as digital data and employs a processor (preferably a programmable processor) that executes processing steps to enhance the spatial and spectral fidelity of the recorded signals. More specifically, the electro-optical sensor hardware is engineered to maximize the light collection efficiency, especially for low light intensities, by using multiple detectors, each of which is optimized individually to maximize its sensitivity to specific wavelength regions of interest. The detector system also employs a variable amplification process that is dependent on the signal intensity so that low signals can be increased for better detection while high signals are amplified less to stay within the dynamic range of the optical sensor that is used to convert the analog signal to a digital value. Solutions to existing problems of low light detection are provided as are new capabilities for data collection and analysis in previously undetectable low signal regimes. The systems and methods are applicable to a broad array of imaging applications in diverse fields from biomedical imaging to astronomy and remote sensing.

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 Raman spectroscopy system, including an optical excitation source, an objective lens, a mirror for redirecting optical excitation to the objective lens, an optical switch, an excitation beam optical fiber operationally connected to the objective lens and to the optical switch, a plurality of Raman probes, a plurality of probe optical fibers, each respective probe optical fiber operationally connected to the optical switch and a respective Raman probe, and a spectrometer. Each respective Raman probe is operationally connected to the spectrometer.

A fluorescence photometer includes a photometer unit and an optical fiber unit. The photometer unit includes a light source, an excitation-side spectroscope for separating light emitted from the light source to generate excitation light, and a fluorescence-side spectroscope for separating fluorescent light emitted from a sample irradiated with the excitation light to generate monochromatic light. The optical fiber unit guides the excitation light to the sample placed outside the photometer unit and guides the fluorescent light emitted from the sample to the photometer unit and includes an image fiber for capturing an image of the sample, an excitation-side fiber arranged around the image fiber and for guiding the excitation light to the sample, and a fluorescence-side fiber arranged around the image fiber and to guide the fluorescent light emitted from the sample to the photometer unit. The excitation-side fiber and the fluorescence-side fiber are arranged to surround the image fiber.