# 2016 IEEE Lighting Conference of the Visegrad Countries (Lumen V4)

## Filter Results

Displaying Results 1 - 58 of 58
• ### [Title page]

Publication Year: 2016, Page(s): 1
| PDF (64 KB)

Publication Year: 2016, Page(s): 1
| PDF (53 KB)
• ### Measurement and evaluation of the road lighting in mesopic and photopic vision

Publication Year: 2016, Page(s):1 - 6
| | PDF (495 KB) | HTML

Recently, more and more experts deals the issue of road lighting. They design methodologies that should be following in the design of public lighting. According to the latest norms is a way of designing road lighting more efficiently, contributing to safer operation and eliminates distracting light. The roads lighting is a specific case of lighting system where an observer stands in the area of ra... View full abstract»

• ### Luminance values extraction from digital images

Publication Year: 2016, Page(s):1 - 3
| | PDF (434 KB)

The paper deals with finding the regression function describing extraction of luminance values of the samples measured with luminance meter from digital images simultaneously taken by a digital camera using scientific computer algebra software. View full abstract»

• ### Contrast analysis in lighting technology

Publication Year: 2016, Page(s):1 - 6
Cited by:  Papers (1)
| | PDF (1320 KB)

The paper describes a new approach to the analysis of lighting systems, namely the lighting environment in general, with focus on luminance contrast mapping. Using the modern measuring equipment based on luminance analyzer units it is possible to transmit the obtained data from luminance maps to contrast maps. The current methods of determining contrast are too simple and can be applied only to a ... View full abstract»

• ### Measuring reflective properties of surfaces using OPTE-F3K

Publication Year: 2016, Page(s):1 - 5
| | PDF (1189 KB) | HTML

Modern computer lighting design programs are using purely diffuse reflecting surfaces during calculations for simplification reasons. For more accurate calculations it is necessary to use real reflective properties of surfaces that can be measured by a reflectophotometer. The reflectophotometer OPTE-F3K of the Department of Electrical Power Engineering, FEE CTU in Prague, allows measuring reflecti... View full abstract»

• ### Selection of lighting systems in outdoor electrical stations working together with camera systems

Publication Year: 2016, Page(s):1 - 6
| | PDF (654 KB) | HTML

When installing outdoor surveillance camera systems, a suitable choice and setting of outdoor lighting are important to ensure the right functioning of a camera and a legible and sharp picture. To these camera systems could transmit relevant visual information in the electric station is necessary correctly settings of illumination. The paper deals with the necessity to cooperate lighting system wa... View full abstract»

• ### Use of photometry in the field of high voltage

Publication Year: 2016, Page(s):1 - 6
| | PDF (1694 KB) | HTML

Laboratory testing of high voltage tested objects often leads to creation of discharges. Discharges are generated by breakdowns or flashovers outer insulation of the tested objects. These discharges generate emission in the IR, UV and also in the spectrum of light. The spectrum and intensity of radiation is dependent on the duration and level of passing current discharge. The shape, density and th... View full abstract»

• ### Influence of background luminance on UGR result

Publication Year: 2016, Page(s):1 - 4
| | PDF (633 KB) | HTML

The article describes UGR measurement with luminance analyzer and discusses overall impact of background luminance on the calculation result. Background luminance, defined as 2π, causes a problem if the luminance is on the periphery of the visual field. Another complication is that the position index is defined only for the upper half of the view. This causes a complication in glare measure... View full abstract»

• ### Ecodesign of light sources

Publication Year: 2016, Page(s):1 - 4
| | PDF (236 KB)

The aim of this paper is to determine the amount of materials which are used in the light sources construction. Another aim of this paper is to identify environmental demands in the production and disposal of light sources on the basis of the material composition. View full abstract»

• ### Illuminance evaluation in automatically dimmed interior lighting systems

Publication Year: 2016, Page(s):1 - 5
| | PDF (1161 KB) | HTML

To verify a quality of dimmed lighting systems with illuminance regulation to constant level it was necessary to develop an automatic measuring system. This system works as a long-term measurement of illuminance of interior workplace (10 illuminance at the same time) together with the daylight measurement. This system measures horizontal illuminance at the workplace as it is required by norms. How... View full abstract»

• ### Conception of public lighting

Publication Year: 2016, Page(s):1 - 4
Cited by:  Papers (1)
| | PDF (1453 KB) | HTML

Public lighting is an important public infrastructure which helps to create the appearance and atmosphere of public spaces of towns and villages. Creating quality public lighting system with adequate operating and investment costs requires a systematic approach. Under such an approach it is necessary to define the quality of public lighting in the broad context, including not only the safety of pe... View full abstract»

• ### The influence of spectral properties of light in street lighting on visual perception

Publication Year: 2016, Page(s):1 - 4
| | PDF (748 KB) | HTML

Human visual perception in terms of spectral properties of light is influenced by three basic components, which are the light source and its spectral distribution of the radiant power, observed object and its spectral properties of surfaces and human eye and its spectral sensitivity. The resultant visual perception is influenced by the interaction of these three components. In the case of street l... View full abstract»

• ### Introductory experiments on preferred picture illuminations

Publication Year: 2016, Page(s):1 - 6
| | PDF (534 KB) | HTML

In recent years the possibilities of museum lighting changed considerably; museum curators have become more and more aware of the fact that natural daylight might be harmful to some pigments, and the illumination of pictures should be controlled to be able to preserve their quality for future generations. In this paper we report about a pilot project in which we tried to make the task of the obser... View full abstract»

• ### Simulation of luminaires based on chip level multi-domain modeling of power LEDs

Publication Year: 2016, Page(s):1 - 6
Cited by:  Papers (1)
| | PDF (864 KB) | HTML

This paper presents an effective and appropriate method to calculate the “hot lumens” of a street-lighting luminaire. The proposed multi-domain LED model is described here with testing simulation results. The practical need for such simulations is demonstrated through an application example. View full abstract»

• ### Smart SSL: Application of IoT/CPS design platforms in LED-based street-lighting luminaires

Publication Year: 2016, Page(s):1 - 6
Cited by:  Papers (1)
| | PDF (463 KB) | HTML

Smart systems - according to a simplistic definition - provide new qualities and new functionalities through the integration of formerly distinct functions, components and networks. Street-lighting (as other lighting applications) recently went already through a drastic change offered by “LEDification”. The easy electronic controllability of LEDs as light sources triggered a new chan... View full abstract»

• ### Bandwidth widening of semiconductors with luminescent layer

Publication Year: 2016, Page(s):1 - 4
| | PDF (654 KB) | HTML

LEDs compared to incandescent bulbs have lots of advantages. The only disadvantage of their application are temperature sensitivity and relative narrow spectrum. To widening bandwidth there are several known solutions, e.g. application of phosphor, a group of several different wavelength LEDs, and other structural architectures (tandem LED, etc.). These structures have many disadvantages, e.g. dif... View full abstract»

• ### Impact of LED-based lighting on selected historical pigments

Publication Year: 2016, Page(s):1 - 6
| | PDF (1082 KB) | HTML

At the University of Pannonia pigment ageing experiment is carried out in order to determine the effects of LED lighting on several compounds of artistic pigments from different art periods, binding material and varnishes. These complex systems as test samples are aged artificially in a spectrally tunable LED lighting booth, which contains 20 independent channels of different LED chains. Several t... View full abstract»

• ### Comparison of luminous intensity distributions measured on luminaire turning and mirror goniophotometer

Publication Year: 2016, Page(s):1 - 4
| | PDF (379 KB) | HTML

A goniophotometer is needed to measure the luminous intensity distribution of luminaires. Goniophotometer types differ basically how their axes relate to the optical axes of the luminaire under test and in which order they apply the turnings. As the result one gets luminous intensity distributions in different coordinate systems, but those can be transferred into each other's system. Some light so... View full abstract»

• ### Color mixing in LED illuminating system for endoscopic purposes

Publication Year: 2016, Page(s):1 - 6
| | PDF (1149 KB) | HTML

Endoscope equipment is used in many applications. One of them is medical diagnostics. The illuminator is an important part of the endoscope, as it enables the performance of the observed object. The quality of light is particularly important if the assessed essential feature is the colour of an object or its distribution on the surface of the object. For this reason, special attention should be pa... View full abstract»

• ### Investigation of COB LED luminance distribution

Publication Year: 2016, Page(s):1 - 4
| | PDF (2966 KB) | HTML

LEDs now are the fastest developing light sources. Photometric parameters improvement is closely connected with structure evolution. The increase of luminous efficiency cause increase of LEDs surface luminance also. The new direction of development of light emitting diodes are COB LEDs. The paper will present the research results, indicating the luminance distribution on the surface of the COB LED... View full abstract»

• ### Monitoring of the subsequent LED lighting installation in Warsaw in the years 2014–2015

Publication Year: 2016, Page(s):1 - 4
| | PDF (792 KB) | HTML

In recent years there has been a significant improvement in technical parameters of light-emitting diodes. LEDs are more and more frequently used for luminaire construction. Photometric parameters given by manufacturers (distributors) are neither complete nor reliable. As a result of the cooperation between Municipal Roads Authority (ZDM) in Warsaw and Lighting Division of the Warsaw University of... View full abstract»

• ### The analysis of asymmetric wall lighting in interior

Publication Year: 2016, Page(s):1 - 6
| | PDF (808 KB) | HTML

In this paper the results of detailed analysis of asymmetric wall lighting in given interior are presented. The effects of wall lighting as a function of distance between wall and line of luminaires are examined. The aim is to find the optimum distance between the wall and the line of luminaires, according to author's criteria, giving the best wall lighting uniformity. Comparing the results, the b... View full abstract»

• ### An automated system for evaluation of the quality of light sources

Publication Year: 2016, Page(s):1 - 4
| | PDF (683 KB) | HTML

The light sources descriptions are complete if additionally to electrical requirements, their radiometric, photometric and colorimetric parameters are provided. Lighting parameters could be obtained directly by measurement instrument or can be calculated based on measured data. It is well known, that value of lighting parameters are varying on the surface of light source and in surrounding space. ... View full abstract»

• ### Dynamically variable luminance distribution as the method of designing and architectural floodlighting

Publication Year: 2016, Page(s):1 - 4
| | PDF (556 KB) | HTML

The article describes a new author's method of floodlighting designing of architectural objects. The method is described and the advantages and limits are shown. The method allows to create a multivariate concept of illumination without the need of usage of complex visualization tools. It is based on projections on the real object of the 3D model or two-dimensional grid, the luminance distribution... View full abstract»

• ### Light source modeling for utilization in asymmetric reflector design for even surface illumination

Publication Year: 2016, Page(s):1 - 5
| | PDF (699 KB) | HTML

Currently, luminaires optics are designed using simulation applications. These applications have models of light sources, which have a significant impact on calculations results accuracy. Adaptation of a model of a light source to an optical system of analysis, or proposition of a new model could have a meaningful impact. The article describes the author's innovative model of a light source to be ... View full abstract»

• ### Elements of inferential statistics in a quantitative assessment of illuminations of architectural structures

Publication Year: 2016, Page(s):1 - 6
| | PDF (552 KB) | HTML

The topic presented in this paper covers statistical studies on illumination conducted using specialised software dedicated to such simulations. A pre-designed computer visualisation of illumination, which included zonal illuminations of a selected architectural structure was modified by a selected group of respondents. As a result of responders individual aesthetic preferences sets of average lum... View full abstract»

• ### Infrared safety filter with variable spectral characteristic in visible region

Publication Year: 2016, Page(s):1 - 5
| | PDF (309 KB) | HTML

The paper presents the concept of an automatic optical filter designed to protect against infrared radiation. The concept of this filter is based on two main optical elements, known as an active blocking element and a passive blocking element. The design of the filter combines these two elements. The active blocking element enables one to control the amount of visible light passing through it. The... View full abstract»

• ### Measurement verification of computer simulations for the escape route lighting installation

Publication Year: 2016, Page(s):1 - 6
| | PDF (436 KB) | HTML

The purpose of the study was to determine the performance accuracy of the simulation of escape route lighting installations using the most popular programs supporting the lighting design - DIALUX and RELUX and possible errors associated with illuminance measuring of emergency escape lighting. In order to complete the projects we have selected five emergency lighting luminaires with LED sources wit... View full abstract»

• ### The issues of interior lighting on the example of an educational building adjustment to nZEB standard

Publication Year: 2016, Page(s):1 - 6
| | PDF (203 KB) | HTML

Improvement of energy efficiency in buildings is the goal of many activities around the world. In recent years a need to increase the number of buildings, which not only fulfil the minimum energy performance requirements, but have very low energy consumption and are environmentally friendly has been recognised. In this paper the issues of electric lighting quality in educational buildings, focused... View full abstract»

• ### Radiation studies of the illumination lighting luminaires with LED technology

Publication Year: 2016, Page(s):1 - 4
| | PDF (875 KB) | HTML

Semiconductor LED sources currently represent the most rapidly growing group of light sources and thanks to their numerous advantages, they have been applied in many areas of light technology. One of these application areas of LED sources is the area of illumination, and the illumination luminaires based on the said light sources, enable the much broader use, compared to the discharge sources, amo... View full abstract»

• ### The technical possibilities of losses reduction in the LED optical systems

Publication Year: 2016, Page(s):1 - 5
| | PDF (810 KB)

The paper presents the results of analysis of losses in a typical optical systems used for forming luminous intensity distribution of LED sources in the context of the application for road lighting. There was discussed the characteristics of LEDs and issues related to energy efficiency of lighting. There was shown typical optical systems, containing reflecting and refracting elements, discussed th... View full abstract»

• ### Selected measurement problems during the evaluation of occupational exposure to UV radiation emitted by the welding arc

Publication Year: 2016, Page(s):1 - 7
| | PDF (437 KB) | HTML

The welding arc is a source of strong optical radiation, especially in UV and visual ranges of spectrum. Apart from the direct radiation emitted by the arc, the workplace is also exposed to radiation reflected from the surrounding as well as ambient radiation coming from an artificial light sources and the daylight. All of these factors affect the accuracy of evaluation of welder's exposition. It ... View full abstract»

• ### The Unified semantic Glare scale for GR and UGR indexes

Publication Year: 2016, Page(s):1 - 6
| | PDF (727 KB) | HTML

The Glare Rating (GR) and Unified Glare Rating (UGR) are practically used measures of glare, respectively, for the outdoor and indoor workplaces. The glare sensation scale used for outdoors is also different than for indoors. That has been making impossible the comparison of glare level for outdoor and indoor workplaces, even if the sensation of experienced glare is the same. So the semantic scale... View full abstract»

• ### Field measurement of Floodlighting Utilisation Factor

Publication Year: 2016, Page(s):1 - 4
| | PDF (505 KB) | HTML

The main purpose of this work is to present a method and some examples of field measurements of the parameters known as floodlighting utilisation factor (FUF) and relative loss of luminous flux. The measurements were performed using a traditional luminance meter with a specified measuring area. The results of these measurements, which were made on two selected floodlit objects (The Center for Fore... View full abstract»

• ### Potential resource of mistakes existing while using the modern methods of measurement and calculation in the glare evaluation

Publication Year: 2016, Page(s):1 - 5
| | PDF (1141 KB) | HTML

Glare prediction is associated with the need to calculate the luminance on the basis of the parameters contained in the IES files or by measuring the luminance distribution of the luminous part of luminaires surface in a given direction. The XXI century is the age of all measurements digitization. This causes the parameters until recently immeasurable become measurable in a relatively simple way. ... View full abstract»

• ### An incorporation of contemporary daylight assessment methods into architecture and urban planning of residential areas in Poland

Publication Year: 2016, Page(s):1 - 8
| | PDF (353 KB) | HTML

This paper presents the preliminary results of the ongoing research focusing on daylight design methods for the urban planning of residential areas in Poland. The purpose of this research is to find out if modern daylight performance metrics and design methods can be beneficial to the process of urban residential planning. The paper presents a review of daylight guidelines derived from historic, P... View full abstract»

• ### Calibration of glossmeter

Publication Year: 2016, Page(s):1 - 3
| | PDF (240 KB) | HTML

The paper deals with issues involved in calibration of glossmeters used to the measurement of high gloss for measurement geometries 20°/20°, 60°/60°, 85°/85°. An algorithm for the adjustment and calibration at adjustment point has been described. Calibration uncertainty has been analyzed. The basic sources of uncertainty are characterized and estimated. Me... View full abstract»

• ### Landscape lighting as a source of light pollution - the effect of the seasons on this phenomenon

Publication Year: 2016, Page(s):1 - 5
Cited by:  Papers (1)
| | PDF (668 KB)

Outdoor lighting can be a source of undesirable phenomena known as light pollution. Too much of light pollution has consequences: it washes out starlight in the night sky, interferes with astronomical research, disrupts ecosystems, has adverse health effects and finally energy is wasted. The amount of light pollution mostly depends on the type of light source (it's spectral power distribution) and... View full abstract»

• ### The effects of LEDs on growth and morphogenesis of vegetable seedlings cultivated in growth chambers

Publication Year: 2016, Page(s):1 - 4
| | PDF (213 KB) | HTML

The experiments with artificial lighting of vegetable seedlings using different type of lamps were carried out on tomato cultivar Debut' and cucumber Kafkas', in the period from November 2015 to January 2016. Seedlings were grown in growth compartments with controlled climate (temperature, light, photoperiod) and then in a greenhouse. For plant lighting the 400 W HPS lamps, and two variants of L... View full abstract»

• ### Reflector shape design using merit function and genetic algorithm

Publication Year: 2016, Page(s):1 - 5
| | PDF (366 KB) | HTML

The article presents results of research on the calculation of the shape of a mirror reflector that has not a rotating symmetry. The objective function ensures the highest possible average value of illuminance and uniformity ratio of illuminance. Optimization calculations were carried out for different light source dimensions with the use of merit function. In this paper two strategies that help t... View full abstract»

• ### The reduction wattage of HID lamps and LED modules

Publication Year: 2016, Page(s):1 - 6
| | PDF (629 KB) | HTML

The article presents an analysis of application of electronic control gears for discharge lamps (metal halide lamps and high pressure sodium lamps). It describes main advantages of using electronic ballasts for HID lamps, compared to conventional ballasts (magnetic). The results of measurements of basic electric and lighting parameters for HID lamps powered by electronic ballasts enabling power co... View full abstract»

• ### Luminous flux ring mixer

Publication Year: 2016, Page(s):1 - 4
| | PDF (355 KB) | HTML

LED modules emitting a luminous flux, implement near-field luminance distribution or colorimetric distribution depending on emitters location. In the far field there is complete mixing of luminous flux, both in terms of quantity as well as because of distribution color parameters. To achieve these mixing light in a short distance of the LEDs is necessary to use optical elements. The article presen... View full abstract»

• ### Comparative study of lighting quality and energy efficiency for various road lighting situations

Publication Year: 2016, Page(s):1 - 5
| | PDF (347 KB)

For road lighting, the main factors directly influencing on the energy performance of lighting, and consequently reducing the consumption of energy, are, among others, the kind of light sources and luminaires and the geometry of positioning of light sources in relation to the road. The article presents a comparative analysis of various lighting solutions for a specific road section, taking into ac... View full abstract»

• ### Concurrent lighting system on roads in practice

Publication Year: 2016, Page(s):1 - 3
| | PDF (235 KB) | HTML

The concurrent lighting system was developed for interactive control the street luminaires located along the chosen road. The individual light spots are switched on and off, depending on the needs arising from the of user presence. After more than a year of operation, presented system was evaluated by economic effects. Real consumption of electrical energy by operating concurrent lighting system w... View full abstract»

• ### Parameterisation of direct illuminance for an artificial sky with sun

Publication Year: 2016, Page(s):1 - 5
| | PDF (365 KB) | HTML

There are many artificial skies and simulators allowing to model daylighting under CIE overcast sky or various illuminance scenes respectively. Only some of them are equipped by an artificial sun having various constructions, like a flat panel with many small reflectors or a large parabolic reflector simulating parallel sun beams. Generally, an artificial sun in these devices is conceptually desig... View full abstract»

• ### Utilization of daylight in school buildings

Publication Year: 2016, Page(s):1 - 4
| | PDF (619 KB) | HTML

Nowadays, daylighting in interiors of school buildings is evaluated after model representing CIE overcast sky conditions. During a year also other situations can occur which are not respected in the design of interior daylighting. The work group WG11 of the CEN TC 169 elaborates the EN standard for evaluation of daylight in buildings considering also local climate in Europe. One of the proposed pa... View full abstract»

• ### Case-studies of the assessment of energy performance of road lighting

Publication Year: 2016, Page(s):1 - 5
| | PDF (383 KB)

The paper aims to present typical values of the new PDI indicator for different lighting situations, road widths, typological selection of luminaires with different optics and first of all - different lamp types comprising also low-performing mercury lamps (for illustrative purposes) through standard high-pressure sodium lamps or metal halide lamps up to the recent LED technologies used in road li... View full abstract»

• ### Proposal of a method for assessment of energy performance of home lighting

Publication Year: 2016, Page(s):1 - 5
| | PDF (314 KB)

This paper aims to present the proposal of a new method for assessment of lighting energy performance of home lighting, based upon findings and conclusions of research results. As the standard on energy performance of lighting in buildings distinguishes i.e. quick (or simplified) method and comprehensive method, to be used for different purposes, the proposed method is intended to fill the gap in ... View full abstract»

• ### History of the daylight criteria conditions influencing new methods for the determination of interior daylighting

Publication Year: 2016, Page(s):1 - 8
| | PDF (1886 KB) | HTML

Determination of sunlight and skylight availability and utilization may be based only on the characteristics of the sun and sky as natural sources of daylight. Sun as a primary source of light has been studied for centuries with gradually accumulating knowledge concerning the sun position on the sky vault in different geographical locations and various time periods. Extraterrestrial solar energy f... View full abstract»

• ### Modeling the night sky brightness distribution via new SkyGlow Simulator

Publication Year: 2016, Page(s):1 - 3
| | PDF (400 KB) | HTML

Regional/global increase of excessive artificial light currently is one of the most pressing environmental concerns in the public's eye. It is not surprise that a proper qualification and quantification of light pollution levels became important issue worldwide. The decisive effects of light sources and atmospheric environment on the diffuse light of a night sky have also been recognized, but rema... View full abstract»

• ### Calibration of the artificial sky using fisheye images

Publication Year: 2016, Page(s):1 - 4
| | PDF (482 KB) | HTML

An artificial sky is a unique simulator generating sky luminance distribution on the hemispherical dome in accordance with CIE S 011/E: 2003 standard. Its current reconstruction at Slovak Academy of Sciences needs a precise setup of the location, orientation and luminance level of the LEDs to reach the exact luminance distributions of the overcast, clear and intermediate skies. A software product ... View full abstract»

• ### Influence of the calculation grid density to the selected photometric parameters for road lighting

Publication Year: 2016, Page(s):1 - 4
| | PDF (1759 KB) | HTML

Calculation and measurement of performance parameters of public lighting are performed in a grid of points defined by the CIE publication 140 and European standard EN 13201-3. Calculation grid defined in these documents was created at a time of low powerful computers and less precise measuring technology. Distance between two adjacent calculating points may be a 3 m, depending on the geometry of t... View full abstract»

• ### The influence of photometric coating on spectral reflectance of artificial sky dome

Publication Year: 2016, Page(s):1 - 5
| | PDF (295 KB) | HTML

The artificial sky has been in operation at the Institute of Constructions and Architecture of Slovak Academy of Sciences in Bratislava since 1970's. This artificial sky provides lighting simulations in conditions of overcast sky mainly for daylighting measurements in physical scaled models. It has been used for wide spectrum of photometric measurements ranging from scaled building interiors to li... View full abstract»

• ### Estimation of Garstang emission function parameters from skyglow monitoring by all-sky camera

Publication Year: 2016, Page(s):1 - 3
| | PDF (201 KB) | HTML

A knowledge of an emission function of gound-based light sources is crucial for skyglow modelling. In the case of complex light sources as cities, it is in practice impossible to specify accurately their emission characteristics. Therefore various semi-empirical functions determined by some suitably defined parameters are usually used for description of city light emissions. Assessment of these pa... View full abstract»

• ### LED retrofits and their role in transient to the more energy efficient home lighting

Publication Year: 2016, Page(s):1 - 5
Cited by:  Papers (1)
| | PDF (548 KB) | HTML

This paper aims to show that retrofit lamps are not always suitable to replace old-fashioned lamp types by simple comparison of their luminous flux. Using a common type of diffuser combined with a clear bulb, retroft compact fluorescent lamp and a LED retrofit the luminous intensity distribution of these combinations have been measured. The results were expected to show significant differences in ... View full abstract»

• ### Classification system for lighting design under condition of mesopic photometry

Publication Year: 2016, Page(s):1 - 6
| | PDF (1271 KB) | HTML

However, recommended system for mesopic photometry was already stated in 2010 a lot of issues are still open to solve them with respect to assessment of the adaptation luminance which is required for the computation or determination of the mesopic photometric quantity for example luminance or illuminance. This is mainly dependent on visual field of observer and also value of this photometric quant... View full abstract»

• ### Methods for correction of the LIDC by means of goniophotometers with rotating luminaires for different lamps

Publication Year: 2016, Page(s):1 - 6
| | PDF (505 KB) | HTML

Goniophotometry is the fundamental measurement method for the measurement of spatial distribution of the light output of luminaires. The measurement results are represented by luminous intensity distribution curves (LIDC). This information is used by lighting designers for computation of photometric parameters to predict photometric values in real lighting installations. Therefore accuracy of the ... View full abstract»