Title variants
Languages of publication
Abstracts
A two-axis goniophotometer is constructed at National Metrology Institute of Turkey (TUBITAK UME) for characterizing photometric properties of compact light sources. With the new device, total luminous flux emitted by a light source at both cap-up or cap-down mounting positions is calculated from the integration of the illuminance values E( θ, φ) measured on the goniometric spherical surface. The internal calibration of the system is performed by means of two calibrated light sources with known luminous flux values. The constructed system is also capable of measuring the luminous intensity distribution values I( θ, φ) of compact light sources. The uncertainty analyses of the luminous flux measurements as well as the internal calibration of the instrument are also presented herein.
Discipline
- 07.60.-j: Optical instruments and equipment(see also 87.64.M- Optical microscopy in biological and medical physics; for optical sources, see 42.72.-g; see also 42.79.-e Optical elements, devices and systems; for optoelectronic devices, see 85.60.-q; for optical telescopes, see 95.55.Cs; for photometric, polarimetric, and spectroscopic equipment in astronomy, see 95.55.Qf)
- 42.15.Eq: Optical system design
- 07.60.Dq: Photometers, radiometers, and colorimeters
- 06.20.F-: Units and standards
Journal
Year
Volume
Issue
Pages
783-791
Physical description
Dates
published
2011-06
received
2010-08-23
Contributors
author
- National Metrology Institute of Turkey (TUBITAK UME), TUBITAK Gebze Yerleskesi, 41470, Gebze, Kocaeli, Turkey
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv119n609kz