The facility will also accommodate a Lighting Tunnel equipped with a customised goniophotometer
providing measurement technology, which will be certified to IATF 16949 and ISO/IEC 17025 and will be able to support product development and validation testing.
Gloss was tested with use of the Rhopoint IQ goniophotometer
that measures gloss at the angles of 20/60/85[degrees].
The goniometer can be paired with either a photometer (goniophotometer
), for angular luminous intensity measurements only, or with a spectroradiometer (goniospectroradiometer) if angular color information is required.
(8.) Nadal, ME, Thompson, EA, "NIST Reference Goniophotometer
for Specular Gloss Measurements." J.
The Rhopoint IQ Gloss-Haze-DOI-Goniophotometer has been established as the reference instrument for measuring reflective appearance like gloss, haze, distinctiveness of image (DOI) &c goniophotometer
In this study, a goniophotometer
was used to measure the luminous intensity generated at various angles by the high-power LED developed by Nichia (SN: NCSL119A-H1-E).
using a Micro-TRI-Gloss Glossmeter from BYK Gardner and a Rhopoint IQ goniophotometer
from Rhopoint Instruments Ltd.
The luminance data can be: a) measured for existing luminaires, using a near-field goniophotometer
, or b) inserted in simulation software using ray data as individual rays or surface sources.
Table 3 shows data for the three samples compared here, obtained using an Elcometer 6015 Goniophotometer
. From left to right are listed Gloss Units (GU), R(spec) specular reflectance, Dol (Distinctness of Image) and Haze.
A moving-mirror, Type-C goniophotometer
(Independent Testing Laboratories, Boulder, CO) was equipped with a specialized UVGI reflective mirror (Milcure 1000 aluminum reflector sheet, Miltec UV, Stevensville, MD) and GigaHertz-Optik model P9710 optometer with model UV-3718--2 flat UV sensor (Puchheim, Germany).