Abstract: The present disclosure relates to visualizing an operative field in the context of a dental operating theater, and more specifically, to a portable, modular, multifunctional intraoral imaging system to assist a practitioner in performing a medical or dental procedure in a confined space (e.g., intraoral cavity or mouth of a patient). The system may include an intraoral camera apparatus having a camera unit equipped with a wireless transmitter, and a viewscreen mounted to an articulated stand or dental delivery unit, wherein the camera wirelessly may transmit an image to a viewscreen located directly in front of a dental practitioner. The practitioner may look directly ahead at a high-definition screen to view the operative field. A dental practitioner may use the apparatus to perform micro-surgical procedures in a confined operative area with less-than-ideal visibility and access, without the present, though generally accepted, physical difficulties and limitations.

Abstract: A purifying apparatus includes: an optical sensor that outputs an electrical signal, the optical sensor including a light source that emits first light and a photodetector that receives second light from a region irradiated with the first light; a determination circuit that determines the presence or absence of a physical object in the region and generates an image representing a determination result, the determination circuit including a signal processing circuit that processes the electrical signal; a spray that sprays a cleansing agent through a spray nozzle, the spray including the spray nozzle; a range finder that measures a distance from the spray nozzle to the physical object; and a controller that controls, according to the distance, spraying of the cleansing agent by the spray.

Abstract: Apparatus and methods for identifying substances in a material include at least one light source configured to irradiate a sample of the material with light of at least one wavelength. A detector is configured to detect light re-emitted or transmitted by the sample. An analysis device analyzes the detected light by UV/VIS spectroscopy, fluorescence spectroscopy, Raman spectroscopy, or absorption spectroscopy, and generates a first identification result for at least one substance of the sample. Further, the analysis device generates a second identification result in response to the first identification result being an ambiguous identification result. The second identification result may be generated by fluorescence light decay time analysis (FLZA). At least one substance is at least partially identified based on the first identification result or based on the first and second identification results.

Abstract: A hand sanitization system, a sanitization machine, and hand coverings containing markings for use with the sanitization machine are disclosed. The hand sanitization machine is capable of sanitizing hand coverings that were traditionally disposed of after one use. The hand coverings may contain indicators that signal when they have been sterilized.

Abstract: In one aspect, a method of sorting cells in a flow cytometry system is disclosed, which includes illuminating a cell with radiation having at least two optical frequencies shifted from one another by a radiofrequency to elicit fluorescent radiation from the cell, detecting the fluorescent radiation to generate temporal fluorescence data, and processing the temporal fluorescence data to arrive at a sorting decision regarding the cell without generating an image (i.e., a pixel-by-pixel image) of the cell based on the fluorescence data. In some cases, the sorting decision can be made with a latency less than about 100 microseconds. In some embodiments, the above method of sorting cells can have a sub-cellular resolution. In some embodiments, a single radiofrequency shift is employed to separate the optical frequencies while in other such embodiments a plurality of different radiofrequency shifts are employed.

Abstract: A system and a method identify an adverse geological body in a tunnel based on hyperspectral technology analysis. The system includes a wall-climbing robot, a controller, and a signal processor, wherein the wall-climbing robot is provided with a plurality of groups of hyperspectral light sources and receivers, and the hyperspectral light sources and the receivers are arranged at intervals; the controller is configured to control the operation of the wall-climbing robot to ensure that the wall-climbing robot moves on a tunnel face according to a set spiral path; and the signal processor communicates with the receivers to receive the acquired spectrum data, draws a mineral distribution map of the tunnel face with the path raveled by the wall-climbing robot as a plane, and identifies an adverse geological body by identifying categories and distribution characteristics of the representative minerals.

Abstract: A method of operating a chemical mechanical planarization (CMP) tool includes attaching a polishing pad to a first surface of a platen of the CMP tool using a glue; removing the polishing pad from the platen, wherein after removing the polishing pad, residue portions of the glue remain on the first surface of the platen; identifying locations of the residue portions of the glue on the first surface of the platen using a fluorescent material; and removing the residue portions of the glue from the first surface of the platen.

Abstract: An apparatus and method for to monitoring slurry buildup is disclosed. A substrate polishing apparatus includes a surface coated at least in part with a fluorescent material, a light source configured to illuminate the surface, an image sensor configured to image the surface, and a processor coupled to the image sensor and configured to monitor slurry buildup on the surface using data supplied from the image sensor.

Abstract: Provided herein is an apparatus for assessing a fluorescence characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a gemstone to be assessed, one or more light source to provide uniform UV and non-UV illumination, an image capturing component, and a telecentric lens positioned to provide fluorescent images of the illuminated gemstone to the image capturing component. Also provided are methods of fluorescence analysis based on images collected using such an apparatus.

Abstract: A measuring apparatus includes a holding table that holds a measurement-target object and a measuring unit that measures a height or a thickness of the measurement-target object held by the holding table. The measuring unit includes a light source unit, an optical fiber that guides light emitted by the light source unit, and a light collector that focuses the light guided by the optical fiber on the measurement-target object held by the holding table. The light source unit includes an excitation light source, a fluorescent body that emits fluorescence when receiving excitation light emitted by the excitation light source, and a collecting lens that focuses the excitation light emitted by the excitation light source on the fluorescent body.

Abstract: A temperature measurement sensor according to an exemplary embodiment includes a substrate and an optical fiber provided on an upper surface of the substrate and extending along the upper surface. The temperature measurement sensor further includes a light introduction path of a space that allows a space above the upper surface and a space below a lower surface of the substrate to communicate with each other and an optical coupling portion provided on the upper surface and disposed in the light introduction path. The optical coupling portion is optically connected to the end surface of the optical fiber. The optical fiber forms the first pattern shape and the second pattern shape. The first pattern shape includes the optical fiber more densely than the second pattern shape. Light incident on the optical coupling portion from a side of the lower surface through the light introduction path reaches the end surface through the optical coupling portion.

Abstract: A head-up display apparatus projects a plurality of virtual images of which depths perceived by a user are different from each other. The head-up display apparatus includes a first projection apparatus and a second projection apparatus. The first projection apparatus includes a first display-light emitting unit configured to emit first display light, and a concave mirror configured to reflect the first display light and thereby emit reflected light thereof, and is configured to enable the user to perceive a first virtual image by projecting the reflected light onto a virtual-image display unit. The second projection apparatus includes a second display-light generation unit configured to let the reflected light pass therethrough and generate second display light different from the first display light, and is configured to enable the user to perceive a second virtual image by projecting the generated second display light onto the virtual-image display unit.

Abstract: The present disclosure discloses an intelligent point-of-care testing device for mycotoxins based on a quantum dots test strip. A first light source and a second light source are used for exciting a test strip which is placed in a shell and coated with a mycotoxin antigen to obtain emitted light, and a light filtering component is used for filtering out impurity light. A clamping mechanism is used for clamping and fixing an image capturing component. The image capturing component is used for capturing, an image of mycotoxins based on a quantum dots test strip. A processor is used for analyzing and calculating image information to obtain a mycotoxin content result. The testing time is shortened, and the portability and practicability of mycotoxin testing are improved. Quantitative instant testing of single or multi-toxin mixed pollution is achieved, and the technical problem of fluorescence quantification is solved.

Abstract: An optical temperature sensor head having an optical fibre and a sensor material, which is optically connected to a free end of the optical fibre. The free end of the optical fibre has an overmould made of a plastics material, which engages over a free end of the optical fibre and forms a protective body. A transparent window is arranged in the protective body. The window permits an optical connection with the free end of the optical fibre. Luminescence radiation from a sensor material can enter the optical fibre. The protective body has the effect that the temperature sensor head is mechanically stable and is insensitive to environmental influences. A temperature sensor device having such a temperature sensor head. An electric machine having a winding with a winding wire, which is connected to a proposed temperature sensor head.

Abstract: In one aspect, a method of sorting cells in a flow cytometry system is disclosed, which includes illuminating a cell with radiation having at least two optical frequencies shifted from one another by a radiofrequency to elicit fluorescent radiation from the cell, detecting the fluorescent radiation to generate temporal fluorescence data, and processing the temporal fluorescence data to arrive at a sorting decision regarding the cell without generating an image (i.e., a pixel-by-pixel image) of the cell based on the fluorescence data. In some cases, the sorting decision can be made with a latency less than about 100 microseconds. In some embodiments, the above method of sorting cells can have a sub-cellular resolution. In some embodiments, a single radiofrequency shift is employed to separate the optical frequencies while in other such embodiments a plurality of different radiofrequency shifts are employed.

Abstract: This invention provides a UV spectroscopy apparatus and method for controlled drug waste diversion detection. The spectroscopy apparatus employs sample cells which have optimized optical path length such that the measured maximum absorbance of the drug is less than the detection limit of the system. Hence the full unsaturated absorption spectrum of the drug is revealed in the UV wavelength region from 230 nm (or even down to 195 nm) to 400 nm. This full spectrum analysis improves the specificity for drug identification and the accuracy for drug concentration verification. The spectral library of the apparatus comprises the spectra of preservative-free controlled drugs, common excipients, as well as typical diluents, which enables the identification of controlled drugs from different manufacturers and/or diluted with different types of diluents.

Abstract: The present technology includes a memory controller that allocates a new buffer memory area in a buffer memory or stores temporarily stored data in the buffer memory into a memory device based on a state of an auxiliary power device that supplies power to the memory device and the memory controller, and a power state of a host.

Abstract: The invention relates to a sensor module (1) for multiparametric analysis of a medium (105) and to the uses thereof. The sensor module (1) according to the invention is characterised by a combination of photonic and non-photonic measurement principles with parameter-sensitive coatings (103) on a substrate (100). A plurality of properties of a medium (105) can be detected over wide parameter ranges, wherein the most suitable method can be used for the corresponding parameter, at least for example with regard to the accuracy, the long-term stability, the resolution, the reproducibility, the energy consumption, the manufacturing costs, the necessary space requirements.

Abstract: The present disclosure relates to visualizing an operative field in the context of a dental operating theater, and more specifically, to a portable, modular, multifunctional intraoral imaging system to assist a practitioner in performing a medical or dental procedure in a confined space (e.g., intraoral cavity or mouth of a patient). The system may include an intraoral camera apparatus having a camera unit equipped with a wireless transmitter, and a viewscreen mounted to an articulated stand or dental delivery unit, wherein the camera wirelessly may transmit an image to a viewscreen located directly in front of a dental practitioner. The practitioner may look directly ahead at a high-definition screen to view the operative field. A dental practitioner may use the apparatus to perform micro-surgical procedures in a confined operative area with less-than-ideal visibility and access, without the present, though generally accepted, physical difficulties and limitations.

Abstract: Three-dimensional modeling includes obtaining a hemispherical or spherical visible light-depth image capturing an operational environment of a user device, generating a perspective converted hemispherical or spherical visible light-depth image, generating a three-dimensional model of the operational environment based on the perspective converted hemispherical or spherical visible light-depth image, and outputting the three-dimensional model. Obtaining the hemispherical or spherical visible light-depth image includes obtaining a hemispherical or spherical visual light image and obtaining a hemispherical or spherical non-visual light depth image. Generating the perspective converted hemispherical or spherical visible light-depth image includes generating a perspective converted hemispherical or spherical visual light image and generating a perspective converted hemispherical or spherical non-visual light depth image.

Abstract: Aspects of the present disclosure include methods for characterizing particles of a sample in a flow stream. Methods according to certain embodiments include generating frequency-encoded fluorescence data from a particle of a sample in a flow stream; and calculating phase-corrected spatial data of the particle by performing a transform of the frequency-encoded fluorescence data with a phase correction component. In certain embodiments, methods include generating an image of the particle in the flow stream based on the phase-corrected spatial data. Systems having a processor with memory operably coupled to the processor having instructions stored thereon, which when executed by the processor, cause the processor to calculate phase-corrected spatial data from frequency-encoded fluorescence data of a particle a flow stream are also described. Integrated circuit devices (e.g., field programmable gate arrays) having programming for practicing the subject methods are also provided.

Abstract: A process is provided for the determination of oil dispersant effectiveness. A submersible dispersant sensing platform is passed across a body of water. The platform has a plurality of sensors including a multichannel fluorometer and a particle size analyser, and each sensor produces an output data stream. The body of water is continuously analysed at a predetermined depth profile below the surface of the body of water. Hydrodynamic and environmental condition data is collected proximate in time and location to the output data from the dispersant sensing platform. The environmental condition data includes one or more of ambient temperature, body or water temperature, salinity of the body of water, wind speed, location, mixing energy of the body of water and derivatives thereof. Oil and dispersant data is provided which includes characteristics of the dispersant and of oil samples prior to the application of the dispersant.

Abstract: An antifouling layer stack comprising a first layer element, a silicone layer, and a second layer element. The silicone layer is a light guide for UV radiation, and may include embedded UV light sources. The first layer element is situated on a first surface of the silicone layer, and the second layer element is situated on a second surface of the silicone layer. The first and second layer elements differ in composition from the silicone layer. The first layer element facilitates transmission of the UV radiation from the silicone layer to an external medium, and may provide protection and improve the structural integrity of the stack. The second layer element may also provide protection and structural integrity. The second layer element may be reflective, and may provide an adhesive surface for attaching the stack to a vessel.

Abstract: In accordance with some embodiments, systems, methods, and media for asynchronous single photon depth imaging with improved precision in ambient light conditions are provided. In some embodiments, the system comprises: a light source; a detector configured to detect arrival of individual photons, and enter a dead time after a detection; a processor programmed to: cause the light source to emit pulses toward a scene point at the beginning of light source cycles each corresponding to B time bins; cause the detector to enter an acquisition window at a first time bin position; cause the detector to enter another acquisition window at a shifted time bin position; record photon arrival times; associate each photon arrival time with a time bin; and estimate a depth of the scene point based on a number of photon detection events at each time bin, and a denominator corresponding to each time bin.

Abstract: A camera is used in conjunction with storage phosphor paint, configured to examine a surface. The surface is coated with storage phosphor paint in some embodiments. The camera is configured to image the surface coated with the storage phosphor paint, eliminating requirement of fast relaxation times associated with conventional scanners.

Abstract: The sample imaging apparatus includes: a housing that forms a closed space; a transparent tray on which a sample is placed in the housing; a plane light source that is formed by using a flat light guide plate, which propagates light emitted by a light emitting element in a plane direction, so as to illuminates the sample with illumination light through the tray in the housing; a lens that is disposed in the housing so as to face the plane light source with the tray interposed between the lens and the plane light source and is used for imaging the sample; and an imaging control unit that adjusts a focal length of the lens and performs imaging in a case of imaging the single sample.

Abstract: According to an aspect of the present disclosure, a method of treating a textile with an antimicrobial agent over a plurality of laundry cycles each including a wash cycle and a treatment cycle is described. The method includes (a) receiving a textile in a wash system for a first laundry cycle, (b) initiating a wash cycle comprising a detergent, (c) initiating a post-detergent treatment cycle comprising dosing the textile with a solution having a predetermined concentration of an antimicrobial agent that comprises a metallic ion, and (c) repeating steps (a)-(c) for each of a plurality of additional laundry cycles. The predetermined concentration is insufficient to achieve a predetermined antimicrobial efficacy for the textile due to the first laundry cycle alone but sufficient to achieve the predetermined antimicrobial efficacy for the textile due to a combination of the first laundry cycle and one or more of the plurality of additional laundry cycles.

Abstract: A laminated fluorescent sensor includes a sealable sensor housing and an optical sensing system embedded inside the sealable sensor housing. The optical sensing system includes a light source (7), a short wave pass filter (8), an air chamber (10), a sensing unit, a long wave pass filter set (12) and an optical signal collecting unit from top to bottom all of which are coaxially set. The optical signal collecting unit is connected with a signal processing system (14); the sealable sensor housing has air inlets (2, 201) and an air pumping port (3), the air inlets (2, 201) are communicated with the air chamber (10) through an air intake passage, the air chamber (10) is communicated with the air pumping port (3) through an air pumping passage.

Abstract: A cloud-based analytics engine that analyzes data relating to an industrial automation system(s) to facilitate enhancing operation of the industrial automation system(s) is presented. The analytics engine can interface with the industrial automation system(s) via a cloud gateway(s) and can analyze industrial-related data obtained from the industrial automation system(s). The analytics engine can determine correlations between respective portions or aspects of the system(s), between a portion(s) or aspect(s) of the system(s) and extrinsic events or conditions, or between an employee(s) and the system(s). The analytics engine can determine and provide recommendations or instructions in connection with the industrial automation system(s) to enhance system performance based on the determined correlations.

Abstract: A method for counting photons using a photomultiplier includes obtaining a measurement signal from a raw signal produced by the photomultiplier by correcting the raw signal for a noise signal and/or an offset, wherein an incident photon produces a pulse in the raw signal. The measurement signal is integrated over time to form an analog integrated measurement signal. A number of photons that are incident in the photomultiplier is ascertained by comparing a value of the analog integrated measurement signal to an integral proportionality value which corresponds to a specific number of photons incident in the photomultiplier.

Abstract: A process is operable using a computerized system for grading the clarity of a diamond. The computerized system includes an optical image acquisition device, a processor, a pre-trained neural network and an output module operably interconnected together. The process includes: (i) acquiring via an optical image acquisition device one or more plural axial view images of a diamond with different focus depths; (ii) in a processor, combining the plural axial views to form one or more single optical images; (iii) in a pre-trained neural network, providing a regressive value associated with the clarity grade of the diamond based on the one or more single images acquired during step (i); and (iv) from an output module, providing a clarity grade to the diamond (i) by correlating the regression value from (ii) to a clarity grade.

Abstract: An apparatus, and method of operating the same, detects changes in biomass accumulating on a surface of a substrate while minimizing bulk effect. The apparatus includes a sensor substrate and two illumination sources. A first illumination source generates a first light having a first central wavelength. A second illumination source generates a second light having a second central wavelength different than the first wavelength. The first and second light are mixed to produce a combined light. An analyte solution is introduced to the sensor substrate. Incident light of the combined light is reflected from the sensor substrate to produce a signal. The signal is imaged with a camera to obtain a reflectance. Reflectance produced by the combined light is not affected by variations in the dielectric properties of the analyte solution. A biomass accumulated on the substrate is computed based on the reflectance.

Abstract: The illustrated embodiments of the invention include an automated method of assaying a viral and antibody analyte in a sample in a portable, handheld microfluidic reader having a SAW detector with a minimal mass sensitivity limitation. The automated method includes the steps of automatically performing the assay with the SAW detector with enhanced sensitivity as in Optikus I, but also includes the steps of automatically disposing a second portion of the sample on a microarray, selectively automatically probing the second portion of the sample for antibodies corresponding to the at least one selected virus using the microarray, and automatically reading the microarray using a fluorescent camera to identify antibodies in the second portion of the sample.

Abstract: An apparatus to detect contaminants in a fuel comprises an input to receive a fuel flow. A light scattering system is coupled to the input. An imaging system is coupled to the light scattering system. A memory is coupled to the imaging system. A processor is coupled to the memory. Output signals from the imaging and light scattering systems are transferred to the processor. The processor is configured to cause the light scattering system to monitor the light scattering intensity from the contaminants in the fuel flow. The processor is configured to cause the light scattering system to measure a light scattering intensity signal from the contaminants in the fuel flow. The processor is configured to generate a trigger signal to turn on the imaging system when the light scattering intensity is greater than a predetermined threshold.

Abstract: A catheter system includes an electronic console; a catheter having a proximal end attachable to the console and a distal end configured to house therein an optical probe; an optical fiber configured to transmit from the console to the optical probe excitation radiation of a first wavelength, and configured to return to the console an optical response signal having a second wavelength longer than the first wavelength; a detector configured to detect intensity of the optical response signal; and a processor configured to determine, based on the detected intensity of the optical response signal, whether the catheter is properly connected to the console. The optical response signal is generated within the optical fiber itself in response to transmitting the excitation radiation therethrough. The optical response signal is an auto-fluorescence signal and/or Raman scattering signal generated from the optical fiber itself.

Abstract: The present invention relates to a method for determining a growth status of a plant comprising chlorophyll, the method comprising the steps of: illuminating the plant (102) with input light including a light intensity modulation component (205, 206, 207, 208); detecting light emitted from the plant; determining (S702) an offset light intensity (204) surrounding the plant, the offset light intensity being a static component of the input light; determining (S718) a phase and a gain between the input light and the detected light, determining (S720) a growth status of the plant based on a predetermined relationship between input light and detected light, and on the phase and the gain. The invention also relates to a corresponding system and to a computer program product.

Abstract: Disclosed herein is a microparticle analyzing apparatus including a detecting portion configured to simultaneously detect a fluorescence generated from a microparticle in plural wavelength regions and a displaying portion configured to display thereon detection results in the plural wavelength regions in a form of a spectrum.

Abstract: Embodiments disclosed herein generally relate to a substrate temperature monitoring system in a substrate support assembly. In one embodiment, the substrate support assembly includes a lift pin. The lift pin has a body. The body has an interior passage and a rounded top surface configured for contacting a substrate when in use. A substrate temperature sensor disposed in the interior passage.

Abstract: A light emitting diode module comprising: at least one light emitting diode structure, an integrated reflector arrangement that comprises a reflector surface for reflecting light from a light emitting area of the light emitting diode structure. The integrated reflector arrangement further comprises a back reflection surface for diffusely reflecting light emitted via a side surface of the light emitting diode structure back to the light emitting diode structure. The back reflection surface is directly attached to at least a part of the side surface such that during operation of the light emitting diode module an emission of stray light by means of the side surface is reduced. The invention finally describes a flash module, an automotive front lighting or a projection light emitting diode system comprising at least one light emitting diode module.

Abstract: A method for desulfurizing molten steel comprising taking a sample out from molten steel after tapping from a converter or during secondary refining and analyzing the sample rapidly with high accuracy by a method comprising a high frequency induction heating step wherein the sample is combusted and oxidized under the high frequency induction heating in an oxygen atmosphere having an oxygen purity of 99.5 vol % or more to convert S in the sample into SO2 and an analyzing step wherein SO2-containing gas produced in the high frequency induction heating step is analyzed through an ultraviolet fluorescence method to quantify S concentration of the sample.

Abstract: A component mounting apparatus includes a component mounting unit including a suction configured to adsorb and transport a component; a first light source configured to emit first light to the component; a second light source configured to emit second light to a Fiducial mark of a substrate; a filter configured to transmit the first light reflected by the component through the filter and reflect the second light reflected by the Fiducial mark; and an image capturer configured to detect the first light transmitted through the filter and the second light reflected by the filter.

Abstract: Fluorescence imaging system for an operating theatre, comprising a device illuminating the operating theatre and emitting a white light, and a fluorescence imaging device. Said fluorescence imaging device comprises a light source emitting radiation for excitation of a fluorescent marker in a range of emission wavelengths of between 600 and 900 nm. The light emitted by the illuminating device is filtered by a low-pass filter, of which the cut-off wavelength is below the emission range of the fluorescent marker, but is nonetheless able to show an increase or fluctuations in the attenuation for wavelengths above the emission range of the fluorescent marker, the product of the attenuation of the filter of the detector and of the attenuation of the low-pass filter of the illuminating device leading to an attenuation by a factor of at least 106.

Abstract: An optical instrument, such as a spotting scope, is provided. The optical instrument may include a range finder configured to calculate or otherwise determine a distance between the optical instrument and an identified object. The optical instrument may also include a display and a user interface. In some embodiments, an operation system associated with the optical instrument may include sensing touchless gestures. For example, hand gestures or eye gestures may be used to navigate a user interface, to actuate the laser range finder, to alter the brightness of a display, or to carry out any of a number of other operational commands.

Abstract: The invention provides an optical particle sensor which uses light sources of different first and second wavelengths. A first light source is used to detect light scattering and also to determine when a particle reaches a target positional area. In response to the particle being determined to reach the target positional area, a second light source is operated to provide a pulse of light, and light emitted from the particle in response to the pulse of light is detected by the same detector.

Abstract: Techniques for automatically eradicating microorganisms (e.g., germs, bacteria, and/or viruses) from appliance handles using ultraviolet (UV) light are provided. In one aspect, a system for eradicating biological contaminants from a handle on an appliance door is provided. The system includes a UV light emitter for producing UV disinfecting light during a cleaning cycle; and a waveguide coating on the handle, coupled to the UV light emitter, for propagating the UV disinfecting light over a surface of the handle. The system can also include a control module for controlling the UV light emitter; and at least one sensor for providing data to the control module as to when to initiate or halt a cleaning cycle. A method for eradicating biological contaminants from a handle on an appliance door using the present system is also provided.

Abstract: Security element including a first and second pattern formed by a first and second material respectively in or on a first and a second region of a substrate respectively, the first pattern partially overlapping with said second pattern, the first material comprising a first luminescent dye, which upon excitation by electromagnetic radiation falling within its excitation wavelength range emits electromagnetic radiation in a first emission wavelength range, the second material comprising a second luminescent dye, which upon excitation by electromagnetic radiation falling within its excitation wavelength range emits electromagnetic radiation in a second emission wavelength range, said first emission wavelength range overlapping with the excitation wavelength range of the second luminescent dye, so that upon irradiation within the excitation wavelength range of the first luminescent dye the second luminescent dye is excited, in the overlapping area of the patterns, to emit electromagnetic radiation in the emissio

Abstract: Embodiments relate generally to systems and methods for filtering unwanted wavelengths from an IR detector. In some embodiments, it may be desired to remove or reduce the wavelengths absorbed by water, to reduce the effects of water on the detection of the target gas. In some embodiments, a filter glass may be used in the IR detector, wherein the filter glass comprises one or more materials that contain hydroxyls in their molecular structure, and wherein the spectral absorption properties of the filter glass are operable to at least reduce wavelengths of light absorbed by water from the optical, thereby reducing the IR detector's cross sensitivity to water.

Abstract: The application provides an improved gemstone testing apparatus for testing a gemstone specimen. The gemstone testing apparatus includes a handheld casing, a processor unit, a first gemstone test device, a second gemstone test device, and a display unit. The first gemstone test device includes a first test probe and a thermal conductivity test module. The second gemstone test device includes a second test probe and a light absorption module.

Abstract: A device and a method for observing an object by imaging, or by lensless imaging. The object is retained by a holder defining an object plane inserted between a light source and an image sensor, with no enlargement optics being placed between the object and the image sensor. An optical system is arranged between the light source and the holder and is configured to form a convergent incident wave from a light wave emitted by the light source, and for forming a secondary light source, conjugated with the light source, positioned in a half-space defined by the object plane and including the image sensor, such that the secondary source is closer to the image sensor than to the holder. This results in an image with a transversal enlargement factor having an absolute value of less than 1.

Abstract: The invention relates to systems and methods for observing materials, such as living cells or organisms, wherein the systems and methods utilize a microscopy system having an illumination source and an objective lens. A specimen including a predetermined amount of a liquid medium and a predetermined amount of an extracellular strongly absorbing dye is positioned for observation using the microscopy system. The illumination of the specimen correlates to the spectral region around the peak of the dye absorbance for the dye used in the system, such that live cells and organisms appear in contrast over a dark background for observation.