Abstract:
An optical system for sensing an environmental parameter, comprising: an optical pulse generator for generating an excitation pulse; a pulse splitter for splitting the excitation pulse into a sensing pulse and a reference pulse; a sensing arm for receiving the sensing pulse, the sensing arm comprising an emission sensor for sensing the environmental parameter, the optical emission sensor generating a first measurement pulse having a measurement wavelength; a reference arm for receiving the reference pulse, the reference arm comprising an emission artefact adapted to convert the reference pulse into a second measurement pulse having the measurement wavelength; a time delay line for delaying a relative propagation of the measurement pulses; a light detector for measuring an optical energy of the first and second measurement pulses; and an optical link for optically connecting the pulse generator to the pulse splitter, and the sensing and reference arms to the light detector.
Abstract:
An optical system for sensing an environmental parameter, comprising: a pulse generator for generating a first pulse having a first wavelength and a second pulse having a second wavelength; a pulse splitter for splitting each one of the first and second pulse into a sensing pulse and a reference pulse; a sensing arm for receiving the sensing pulses therefrom and comprising a spectro-ratiometric sensor; a reference arm for receiving the reference pulses; a time delay line for delaying a relative propagation of the sensing pulses and the reference pulses; a light detector for measuring an optical energy of the sensing pulse and the reference pulse, for the first and second wavelengths; and at least one optical link for optically connecting the pulse generator to the pulse splitter, and the sensing and reference arms to the light detector.
Abstract:
A spectrometer (1) comprises a light source (2), a monochromator (3) with at least one diffraction grating (4), a monochromator housing (5), an order sorting filter (7), a microplate receptacle (12) and a controller (6). The order sorting filter (7) of the spectrometer (1) comprises a substrate (23), a first optical thin film (24) and a second optical thin film (25), wherein, in a spatially partly overlapping and interference-free manner, the first optical thin film (24) is arranged on a first surface (26) and the second optical thin film (25) is arranged on a second surface (27) of the substrate (23). A spectrometer (1) equipped with a respective order sorting filter is used in a scanning method for detecting the absorption spectrum of samples examined in wells (14) of microplates (13).
Abstract:
Embodiments regard 3D optical metrology of internal surfaces. Embodiments may include a system having an imaging device to capture multiple images of an internal surface, including a first image that is captured at a first location on an axial path and a second image that is captured at a second location on the axial path, and a transport apparatus to move the imaging device along the axial path. The system further includes a control system that is coupled with the imaging, wherein the control system is to receive the multiple images from the imaging device and to generate a 3D representation of the surface based at least in part on content information and location information for the multiple images.
Abstract:
A medical examination device used for the detection of pre-cancerous and cancerous tissue has an illumination source, a visualization unit, a contacting optical probe, a detector and a process unit. One embodiment of the apparatus includes both a non-contacting macroscopic viewing device (the visualization unit) for visualizing an interior surface of the cervix, as well as a fiber optic wand (contacting optical probe) for spectrally analyzing a microscopic view of the tissue.
Abstract:
It is desirable to more stably and efficiently transmit light in a housing of a light source unit. A light source unit 13, which emits a laser beam L to a light guide part 40, includes: a unit housing 13b that includes a connector receiving portion 51b detachably connected to a connector portion 51a; a light source 30 that is installed in the unit housing 13b and outputs the laser beam L; a diffusion part 80 that diffuses the laser beam L output from the light source 30; a condensing lens system 81 that condenses the laser beam L diffused by the diffusion part 80; and an optical fiber 82a that transmits the laser beam L, which is condensed by the condensing lens system 81, to the connector receiving portion 51b. The connector receiving portion 51b optically connects the optical fiber 82a to the light guide part 40.
Abstract:
A device for determining a concentration of at least one gas in a sample gas stream includes an analysis chamber, a detector, and a connecting channel. The analysis chamber is configured to have the sample gas stream and a reaction gas stream be introduced therein. The sample gas stream and the reaction gas stream are mixed to a gas mixture which reacts so as to emit an optical radiation. The detector is configured to measure the optical radiation. The connecting channel is configured to connect the analysis chamber to the detector. The connecting channel is configured as a light conductor extending from the analysis chamber to the detector.
Abstract:
A spectrally encoded imaging device having a light transmission path arrangement which propagates light to illuminate a target object, a light collection path arrangement having a light collection waveguide which propagates a spectrally encoded portion of the light from the target object to a detector which forms an image of the target object accordingly, and a diffractive element which spectrally disperses at least one of the light and the spectrally encoded portion. The light transmission path arrangement and the light collection path arrangement are optically isolated from one another.
Abstract:
A remote sensor element for spectrographic measurements employs a monolithic assembly of one or two fiber optics to two optical elements separated by a supporting structure to allow the flow of gases or particulates therebetween. In a preferred embodiment, the sensor element components are fused ceramic to resist high temperatures and failure from large temperature changes.
Abstract:
An optical arrangement comprising a multi-mode fiber (16) for carrying single mode laser light (12); a randomizer (18) for randomizing spatial modes supported by the fiber and means for averaging, out the randomized spatial modes to recover the single spatial mode.