Last edited by Mazurr
Friday, October 16, 2020 | History

2 edition of Preparation and calibration of first-surface aluminum mirror specular reflectance standards found in the catalog.

Preparation and calibration of first-surface aluminum mirror specular reflectance standards

Victor R. Weidner

Preparation and calibration of first-surface aluminum mirror specular reflectance standards

by Victor R. Weidner

  • 361 Want to read
  • 21 Currently reading

Published by U.S. Dept. of Commerce, National Bureau of Standards, For sale by the Supt. of Docs., U.S. G.P.O. in Washington, D.C .
Written in English

    Subjects:
  • Specular reflectance -- Standards.,
  • Mirrors -- Standards.

  • Edition Notes

    StatementVictor R. Weidner, Jack J. Hsia.
    SeriesStandard reference materials, NBS special publication ;, 260-75
    ContributionsHsia, J. J., Center for Radiation Research. Radiometric Physics Division.
    Classifications
    LC ClassificationsQC100 .U57 no. 260-75, QC425 .U57 no. 260-75
    The Physical Object
    Paginationviii, 17 p. :
    Number of Pages17
    ID Numbers
    Open LibraryOL3140234M
    LC Control Number82600542

    These standards are aged, magnesium fluoride coated first surface aluminum mirrors for the calibration of other specular materials in hemispherical geometry. Transmittive Diffusers Diffusers are used to give a lambertian response to a detector, either in a sphere system or as a solar collector. Specular Glass. Specular gloss or specular reflectance is simply the fraction of the incident light reflected from a surface in the mirror direction within a specified angular tolerance. This is the aspect of gloss that is measured most frequently because it is the one for which an instrument is .

    An angle-dependent reflectometer or transmissometer includes an optical imaging array in the incident and reflected or transmitted light path that breaks up an incident light beam into mutually spatially incoherent light bundles. The individual light bundles are then focused to a common spot by a high numerical aperture objective lens so as to provide a range of incidence angles on a sample. original sample mass. The reflectance of an optical witness sample (OWS), a magnesium fluoride coated aluminum, first surface mirror, shall be within the allowable limits of vacuum ultraviolet (VUV, nm – nm) reflectance change (% maximum decrease in ∆R/Ro) when tested in accordance with the test procedure in Paragraph 6.

      Automated Lighting: The Art and Science of Moving and Color-Changing Lights, Third Edition (formerly Automated Lighting: The Art and Science of Moving Light) continues to be the most trusted text for working and aspiring lighting professionals. Now in its third edition, it has been fully updated to reflect the vast changes in stage and studio luminairies—including LEDs, switch-mode . First Surface, Gold on Nickel-Plated Aluminum SRM Multi-Angle White Reflectance Standard SRM diffuse reflectance materials and standards, and optical calibration services. Specialises in custom design and manufacturing. e.g. either perfectly diffuse or perfectly specular (producing a mirror-like reflection).


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Preparation and calibration of first-surface aluminum mirror specular reflectance standards by Victor R. Weidner Download PDF EPUB FB2

Nationalmnuu9 of•r*m>A«»» LtHSAST StandardReferenceMaterials: JUL PreparationandCalibrationofFirst-Surface AluminumMirrorSpecularReflectanceStandards. Preparation and calibration of first-surface aluminum mirror specular reflectance standards (Standard reference materials) Unknown Binding – January 1, by Victor R Weidner (Author)Author: Victor R Weidner.

Get this from a library. Preparation and calibration of first-surface aluminum mirror specular reflectance standards. [Victor R Weidner; J J Hsia; Center for. Get this from a library. Standard reference materials: preparation and calibration of first-surface aluminum mirror specular reflectance standards.

[Victor R Weidner; J J Hsia; Center for Radiation Research. Radiometric Physics Division.]. Title: Standard Reference Materials: Preparation and calibration of first-surface aluminum mirror specular reflectance standards/ Date Published: Authors: Jack J Hsia, Victor R Weidner Report Number: NBS SP doi: / Download PDF | Download Citation.

$ SN Weidner, V. R., Hsia, J. J., Standard Reference Materials: Preparation and Calibration of First Surface Aluminum Mirror Specular Reflectance Standards (SRM a), NBS Spec. Publ. (May ). $ SN Hicho, G.

and Eaton, E. E., Standard Reference Materials: A Standard Reference Material. Preparation and Calibration of First Surface Aluminum Mirror Specular Reflectance Standards (SRM a) (May ). Weidner, V.

R., and Hsia, J. Preparation and Characterization of K and K Mineral Glasses for Microanalysis: SRM (April ).

Marinenko, R. An enhanced first-surface aluminum reflector Annual Book of ASTM Standards. Astm Standard The absolute specular reflectance of flat mirrors was obtained as a function of the reflected beam.

The results show that first-surface mirrors top-protected with amorphous Aluminum Oxide (1μm thick) layer show a higher specular reflectance compared to second-surface mirrors, which makes Al 2 O.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Usually, the silver mirrors have a higher reflectance than alumi- num mirrors, however, four layers are needed to obtain a good silver mirror, as developed by Hass et al.

() and Bacuchi (), instead of two layers as needed with the aluminum mirrors (aluminum and. The key optical property in a solar mirror is the solar specular reflectance. The quality of the concentrated solar flux profile on the focus is directly related to the accuracy achieved by the mirror to conform the desired concentrator geometry.

First-surface mirrors. MazariDevelopment and mean life of aluminum first-surface mirrors. the American National Standards Institute (ANSI) and the International Standardization Organization (ISO) (Anonymous,).

These are (1) R a, CLA (center-line average), or AA (arithmetic average) and (2) the standard deviation or variance (σ), R q or root mean square (RMS).

Two other statistical FIGURE General typology of surfaces. CONFERENCE PROCEEDINGS Papers Presentations Journals. Advanced Photonics Journal of Applied Remote Sensing. Introduction to First Surface and Second Surface Mirrors. All of our mirrors are first surface mirrors, (Figure 1) featuring a high reflectance coating deposited on the front surface of a variety of different types of glass, metal, or semiconductor substrates.

First surface mirrors are recommended for use in precision optics applications. Four sample types that span a wide range of specular reflectance intensities were investigated. A piece of polished aluminum represents high reflectance (around 90%R), a wafer of silica has medium reflectance (around 50%R), and a piece of dark glass as well as a clear glass slab with back side protection represent low reflectors (around 4%R).

original sample mass. The reflectance of an optical witness sample (OWS), a magnesium fluoride coated aluminum, first surface mirror, shall be within the allowable limits of vacuum ultraviolet (VUV, nm – nm) reflectance change (% maximum decrease in ∆R/Ro) when tested in accordance with the test procedure in Paragraph 6.

KEYWORDS: Optical filters, Radio optics, Sensors, Calibration, Remote sensing, Silicon, Lamps, Photodiodes, Integrating spheres, Radiometry Read Abstract + We describe the development of a mechanically simple, radiometrically stable transfer radiometer designed for.

Specular Glass Specular gloss or specular reflectance is simply the fraction of the incident light reflected from a surface in the mirror direction within a specified angular tolerance.

This is the aspect of gloss that is measured most frequently because it is the one for which an instrument is. Book topics include. Practical aspects of spectrometers and spectrometry. Sample preparation. Chemometrics and calibration practices.

Reflectance measurements. Standard materials measurements. An emphasis is placed on reflectance and color measurements due to their common usage in today's spectroscopic laboratories. First Surface Gold Mirror for Specular Reflectance from nm to nm Series: This Standard Reference Material (SRM) is intended for use in calibrating the reflectance scales of specular reflectometers.

The SRM mirror consists of a glass substrate. Ultra-precision face turning of Al mirrors using single point diamond turning (SPDT) was undertaken to investigate the correlation between the surface roughness and reflectance.

By reducing the feed rate, the optimal feed rate when the chip formation became unstable was studied. Most importantly, the impact on the roughness and reflectance was examined when the chip formation .For $75 a year, or free for students, you can be a member of one of the world's leading standards development organizations.

Members help create and update standards while gaining knowledge, leadership skills, professional networks, and more. Your benefits include a free print or online volume of standards, Standardization News magazine, access.