A. Scroccaro

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Two methods for the measurement of the luminous flux are presented: the first is based on an integrating sphere and a luminous flux standard lamp, the second utilizes an accurate goniometer and an accurate illuminance meter. A comparison between the two methods is carried on for two different light sources: an LED and a halogen source, presenting different(More)
The connection between illuminance and luminance measurements is considered to create a traceability link among a highly accurate illuminance meter, which is considered as an internal standard of the Photometric Laboratory, University of Padova, Padova, Italy, and other illuminance meters or photometric heads and luminance meters. After an introduction on(More)
The paper describes the system, the procedure and the first results of a series of experiments of photocatalytic degradation of organic compounds (phenols and pyridines) carried out using commercial P-25 TiO<sub>2</sub> as catalyst and commercial LEDs as light sources. A relevant amount of organic products (more than 50%) is converted to CO<sub>2</sub> and(More)
The connection between illuminance and luminance measurements is considered to create a traceability link among an highly accurate illuminance meter, considered as an internal standard of the Photometric Laboratory of the University of Padova, and other illuminance meters or photometric heads and luminance meters. Examples are presented in the paper. The(More)
In the present work, a new imaging device for multi spectral analysis in the visible range is presented, together with its own performances and an example of its application. The instruments can be used to acquire photometric and colorimetric characteristics of wide surfaces in quick and easy way. It is composed by a scientific grade CCD camera and a(More)
An accurate goniometer was constructed, being a part of a system that is designed for the measurement of reflecting properties of surfaces. It can be used to orient a surface of the sample under test arbitrarily with respect to the observing direction and the direction of the shooting light beam. The high performance (revolution angle uncertainty equal to(More)
Here it is presented a system able to perform automatic measurements, according to national and international standards, of the illuminance and the luminance produced by a road lighting system. Even if it requires the road under analysis is closed, it reduces highly the required time for qualifying a road lighting plant. The description of the system is(More)
Measurement of ultraviolet radiation is a common issue in many fields of applications. The easy way to approach to ultraviolet measurement is by using broad band probes. Their use should be straightforward, but their calibration is not always simple to be applied in small industrial, test and research laboratories. The paper presents the two main approaches(More)
The paper describes the system, the procedure and the first results of the on site measurements devoted to the spectrometric characterization of the Tintoretto's painting in the &#x201C;Scuola Grande di SanRocco&#x201D; in Venice. The measuring method proves to be effective to provide a solid basis for the study and the design of a new lighting system able(More)
The ability of multi luminance meters in identifying the directionality of light sources and their possibility in selecting and analysing the contribution to luminance of sources located in different places, makes the Photometric Laboratory of the University of Padova to use them to measure illuminance in critical cases, like in glare quantification and(More)