摘要:
A food integrity probe design comprising two illumination fiber rings, allowing for two different simultaneous measurements wherein the inner illumination ring generates a surface reflectance signal on the central detection fibers and the outer illumination ring allows for an additional interactance measurement, probing deeper into the sample than the surface reflectance alone while partially eliminating specular reflection, which reduces the signal quality, through the addition of a ring-shaped diffusor onto the inner illumination ring is disclosed.
摘要:
This disclosure describes an optical system design using Morse Taper mounted optical components for improving alignment performance and more specifically is a spectrometer design that eases alignment and improves alignment stability, both physical and temperature related, of optical components while simplifying manufacture and maintaining a compact footprint.
摘要:
A web-based services on a spectrometer system that enables a web-based server to provide multiple standard protocols including, but not limited to, Hyper Text Transfer Markup (HTTP) and Secure (HTTPS) as well as File Transfer Protocol (FTP) thus allowing native administrative and management applications to run on the spectrometer system and, by the use of standard interfaces, to connect to and send and retrieve information directly between the spectrometer and client devices via a web-based server is disclosed.
摘要:
A method to adjust the energy transmitted from a multiplicity of light sources to provide an adequate reference for spectral measurement or control using a multichannel feedback adjustment algorithm that compensates for the interactions between adjacent spectral ranges and sets reference light sources for optimal system performance using a normalized energy value for each spectral range is disclosed.
摘要:
A device for improving the suppression of light from a Pulsed Xenon light source for spectrometry by combining a Variable Longpass Order-Sorting filter with a Dichroic Balancing filter coated on a fused Silica substrate is disclosed.
摘要:
A system for detection of low concentration of explosives via Raman spectroscopy is disclosed that is more specifically a Raman detection substrate having a surface-enhancement effect by using roughened glass (or "frosted" glass) with a gold/silver nanosponge alloy sputter-deposited onto it under increased pressure resulting in a nano-porous structure to hold the analyte.
摘要:
Disclosed is an optical sensor device for detecting a chemical analyte including a light source configured to generate probe light having a first wavelength spectrum, an optical fiber sensor probe including a mechanically processed optical fiber segment which is chemically functionalized to include a sensing material formed on exterior of the fiber segment, the optical fiber sensor probe coupled to receive and guide the generated probe light inside the optical fiber sensor probe while allowing optical evanescent coupling between probe light guided inside the optical fiber sensor probe and the sensing material, and a detector coupled to the optical fiber sensor probe to optically detect the guided probe light to obtain information on a material property of the sensing material.
摘要:
A method for generating uniform light with a tailored spectrum using one or more light sources, an integrating space, and one or more selected phosphors to build stable absolute irradiance calibration light sources for fiber and cosine correctors is disclosed.