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Friday, May 8, 2020 | History

5 edition of Stray Radiation in Optical Systems II found in the catalog.

Stray Radiation in Optical Systems II

20-22 July 1992 San Diego, California (Proceedings of S P I E)

by Robert P. Breault

  • 181 Want to read
  • 4 Currently reading

Published by Society of Photo Optical .
Written in English

    Subjects:
  • Applied optics,
  • Optical Engineering,
  • Congresses,
  • Design and construction,
  • Light,
  • Optical instruments,
  • Scattering,
  • Science/Mathematics

  • The Physical Object
    FormatPaperback
    Number of Pages328
    ID Numbers
    Open LibraryOL11392800M
    ISBN 10081940926X
    ISBN 109780819409263

    Purpose: Intercomparison of active dosemeters in the measurement of stray radiation at the Trento active-scanning proton therapy facility. Methods: EURADOS WG9 carried out a large intercomparison exercise to test different dosemeters while measuring secondary neutrons within a MeV scanned proton therapy facility. define what stray light is and how to use FRED to analyze and reduce stray light problems. 1. What is Stray Light Stray light is simply unwanted noise (light) that is added by either opto-mechanical structure, out of field sources, non-perfect optical components or through thermal emission in an optical or illumination system.

    Skoog – Chapter 7 Components of Optical Instruments • General Design of Optical Instruments Electron Image Intensifiers 2) Image Dissectors 3) Solid-State Imaging Systems stray radiation or stray light. Reflectance varies with the angle of incidence. Jul 21,  · Broad-beam optical-computed tomography (optical-CT) systems have shown promise, but can be sensitive to stray light artifacts originating in the imaging chain. In this work we present and evaluate a method to correct for stray light artifacts by deconvolving a measured, spatially invariant, point spread function (PSF).Cited by:

    An imaging spectrometer is an instrument used in hyperspectral imaging and imaging spectroscopy to acquire a spectrally-resolved image of an object or scene, often referred to as a datacube due to the three-dimensional representation of the data. Two axes of the image corresponds to vertical and horizontal distance and the third to awordathought.com principle of operation is the same as that of. @article{osti_, title = {WE-DA Measurement of Stray Radiation Within An Active Scanning Proton Therapy Facility: EURADOS WG9 Intercomparison Exercise of Active Dosimetry Systems}, author = {Farah, J and Trompier, F and Stolarczyk, L and Klodowska, M and Liszka, M and Olko, P and Algranati, C and Fellin, F and Schwarz, M and Domingo, C and Romero-Exposito, M and .


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Stray Radiation in Optical Systems II by Robert P. Breault Download PDF EPUB FB2

Get this from a library. Stray radiation in optical systems II: JulySan Diego, California. [Robert P Breault; Society of Photo-optical Instrumentation Engineers.;]. ADS Classic is now deprecated. It will be completely retired in October Please redirect your searches to the new ADS modern form or the classic awordathought.com info can be found on our blog.

Spie Press Book • on sale Selected Papers on Cryogenic Optical Systems. Editor(s): Gerald R. Pruitt M.B. McIntosh (in Stray Radiation in Optical Systems II ) 22 Specular baffles G.L.

Peterson, S.C. Johnston, J. Thomas (in Stray Radiation in Optical Systems II ). Proc. SPIEStray Radiation in Optical Systems II, pg (12 February ); doi: / Read Abstract + A new approach to darkening surfaces for suppressing stray light in optical systems is to microscopically texture a metal surface directly with light-trapping pores and cones.

Oct 01,  · A systems level analysis using stray light analysis software is often necessary in order to identify more subtle problems and to assess the magnitude of their effect on system performance.

Another key is to address contamination control and the choice of surface coatings early in the program. The management of stray radiation issues is Cited by: 6. Optical design aspects, such as stops, field stops, Lyot stops, and obscurations, are discussed in suppressing stray radiation for various systems.

The performance and testing of scaled models is related to the expected system performance. The major software tools, GUERAP and APART stray radiation analysis programs, are awordathought.com by: The stray radiation calculated for L = 40 nm falls off in the middle of the IRF interval because much of the radiation of highest intensity is classified as primary radiation.

The spectra of the SRPR are obtained by dividing the stray radiation values by the IRF at common wavelengths. Modern optical engineering software — essentially CAD software with extensive bidirectional scatter distribution function (BSDF) — along with modeling, nonsequential ray tracing, and book-keeping capabilities, make it possible to determine which structure(s) are responsible for which stray light artifact(s) present on the detector.

Books (Authored or Edited) 1. Book, National Optical Astronomy Observatory Tucson, AZ (). Book Chapters and Contributions to Resource Books 1. Pompea, significant number of contributions in Great Ideas for Stray Radiation in Optical Systems III, (), Stray light correction on array spectroradiometers for optical radiation risk assessment in the workplace Article (PDF Available) in Journal of Radiological Protection 34(4) · November.

Stray radiation includes self thermal emission from the optical system, solar radiation out of field and ghost of target. Suppression of stray radiation is an interdisciplinary research including optical design, optical material, mechanical structure design, fabrication technique, surface scattering and Cited by: 9.

radiation [ra″de-a´shun] 1. a proceeding outward from a common center. a structure made up of parts that go outward from a center, especially a tract of the central nervous system made up of fibers that go out in different dfirections.

energy carried by waves or a stream of particles. One type is electromagnetic radiation, which consists of. Analysis to Stray Radiation of Infrared Detecting System Article in Proceedings of SPIE - The International Society for Optical Engineering · June with 4 Reads How we measure 'reads'.

Jul 27,  · This tribute volume honors two icons in the world of applied optics: Robert (Bob) Shannon and Roland Shack. Based on an August tribute conference held at the SPIE Optical Science and Technology meeting, the volume contains both technical and nontechnical papers by the honorees' colleagues and former students at the University of Arizona's Optical Sciences Center (OSC).

With the purpose of reducing stray radiation dose (SRD) in out‐of‐field region (OFR) during radiotherapy with 6 MV intensity‐modulated radiation therapy (IMRT), a body‐shielding device (BSD) was prepared according to the measurements obtained in experimental awordathought.com by: 2.

Optical radiation Optical radiation les, such as variables used in photometry, photobiology, plant physiology etc. Radiation Capacity The overall power provided by radiation.

Radiant Intensity The quotient from the radiation capacity emitted by the light source into a. Nov 07,  · The European directive /25/EC requires the employer to assess and, if necessary, measure the levels of exposure to optical radiation in the workplace.

Array spectroradiometers can measure optical radiation from various types of sources. Define stray radiation. stray radiation synonyms, stray radiation pronunciation, stray radiation translation, English dictionary definition of stray radiation.

The act or process of radiating: the radiation of heat and light from a fire. other systems feature multiple transmit coils by engaging only those in close proximity with the.

The talk about Radiation test on optical materials, will give a general introduction on testing optical materials for use in radiation environments. A special emphasis is given to thin optical coatings, optical fibers, and fiber Bragg gratings.

Here the test procedures are much more challenging than for. Nov 30,  · Working Group 9 of the European Radiation Dosimetry Group (EURADOS WG9—Radiation protection in medicine) carried out a large measurement campaign at the Trento Centro di Protonterapia (Trento, Italy) in order to determine the neutron spectra near the patient using two extended‐range Bonner sphere spectrometry (BSS) awordathought.com by:.

Nov 21,  · Radiation exposure during diagnostic imaging such as computed tomography (CT) contributes to a small, but potentially preventable percentage of cancers, yet .Apr 22,  · Optical Radiation: Ignition Risk & protection in Hazardous Areas The industrial use of equipment, utilizing OPTICAL RADIATION, is increasing day-by-day.

The most common use is in the fields of communication, surveying, measurement etc. Some of the most familiar forms of equipment using OPTICAL RADIATION are as follows: 1. Electrical lamps 2.Feb 15,  · I have owned this book since The book is an excellent referecne book that details the basic physics as well as characteristics (needed for design)of different types of radiation awordathought.com discussion of theory behind "detectivity",fgigure of merit,speed of response, signal to noise ratio, various sources of noise in semiconductor detectors, etc.

are key items in any awordathought.com by: