Share Email Print
cover

Proceedings Paper

Optical characterization of diffuser-input standard irradiance meters
Author(s): George P. Eppeldauer; Miklos Racz; Thomas C. Larason
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Standards quality irradiance meters have been developed at the National Institute of Standards and Technology to realize a detector based spectral irradiance scale. The design criteria and the optical and radiometric characterization of diffuser-input irradiance meters are discussed. The input geometry optimization is described for a broad-band InGaAs irradiance meter when measuring a 2856 K incandescent light source. The directional responsivity of the fabricated InGaAs and Si irradiance meters matches the cosine function with a maximum deviation of 0.15% within a 12 degree(s) field-of-view. Irradiance from sources of different sizes (incident beams with different f/numbers) can be measured over a wavelength range of 350 nm to 1800 nm.

Paper Details

Date Published: 19 August 1998
PDF: 5 pages
Proc. SPIE 3573, OPTIKA '98: 5th Congress on Modern Optics, (19 August 1998); doi: 10.1117/12.321015
Show Author Affiliations
George P. Eppeldauer, National Institute of Standards and Technology (United States)
Miklos Racz, National Institute of Standards and Technology (Hungary)
Thomas C. Larason, National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 3573:
OPTIKA '98: 5th Congress on Modern Optics
Gyorgy Akos; Gabor Lupkovics; Andras Podmaniczky, Editor(s)

© SPIE. Terms of Use
Back to Top