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Photonics Buyers' Guide
IsoPlane – Spectroscopy Without Compromises
ImageMaster Compact MTF Test Station
Apex 785 Raman Spectrometer
Worldwide Leader in High Volume MTF Testing
Moxtek Improves UV-Vis-NIR Spectrophotometer Performance
Machine Vision Metrology Standards
Telecentric Lenses for Machine Vision Technology
ALI 202 Surface Measurement Systems
A spectrograph is an optical instrument for forming the spectrum of a light source and recording it on a film. The dispersing medium may be a prism or a diffraction grating. A concave grating requires no other means to form a sharp image of the slit on the film, but a plane grating or a prism requires auxiliary lenses or concave mirrors to act as image-forming means in addition to the dispersing element. Refracting prisms can be used only in parallel light, so a collimating lens is required before the prism and an imaging lens after it. Some special-purpose spectrographs are equipped with tiny photodetectors situated in the spectrum at the positions corresponding to the lines of elements whose presence is to be determined.
spectrum measuring instruments
Hamamatsu Corporation, Sub. of Hamamatsu Photonics K.K. - Bridgewater, NJ
Importer and distributor of photonic components and subsystems for use in instrumentation. Products include photomultiplier tubes, solid-state photodetectors, IR detectors, image sensors, scientific-grade CCD cameras, light sources and x-ray solutions. In Europe, please call freephone 00 800 800...
Hellma USA, Inc., Sub. of Hellma GmbH & Co. KG - Plainview, NY
Manufactures and supplies Hellma cells, fiber optic probes, photometric calibration standards, flat and cylindrical optics and accessories for lasers, spectrophotometers and fluorometers. Supplies Heraeus light sources including vacuum UV, deuterium, hollow cathode, PID spectral calibration and...
Princeton Instruments, Division of Roper Industries - Trenton, NJ
Princeton Instruments designs and manufactures high-performance CCD, ICCD, EMCCD and InGaAs cameras; spectrographs; and optics-based solutions for the scientific research, industrial imaging and OEM communities. Partners with researchers and OEMs to solve challenging problems utilizing...
Acal BFi Nordic AB, Sub. of Acal plc - Uppsala, Sweden
Ames Photonics Inc - Hurst, TX
Andor Technology plc, Corporate Headquarters - Belfast, Northern Ireland
Catalina Scientific Instruments - Tucson, AZ
CE Optics Kft. - Szeged, Hungary
Delta Photonics - Ottawa, Canada
EVK DI Kerschhaggl GmbH - Raaba, Austria
Gamble Technologies Ltd. - Mississauga, Canada
McPherson - Chelmsford, MA
MK Photonics, Inc. - Albuquerque, NM
Oriel Instruments, A Newport Corp. Brand - Stratford, CT
Process Instruments, Inc. - Salt Lake City, UT
Renishaw plc, Spectroscopy Products Div. - Wotton-under-Edge, England
Resonon Inc. - Bozeman, MT
Soliton Laser- und Messtechnik GmbH - Gilching, Germany
Spectral Imaging Ltd. (SPECIM) - Oulu, Finland
Verity Instruments, Inc. - Carrollton, TX
Westboro Photonics - Ottawa, Canada
An optical instrument for forming the spectrum of a light source and recording it on a film. The dispersing medium may be a prism or a diffraction grating. A concave grating requires no other means to form a sharp image of the slit on the film, but...
light source measurement
light source testing
spectrum metrology equipment
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