Dynamic illumination in real-time applications using OpenGL is still usually done with the classical light forms of point lights, directional lights and spot lights. For applications simulating real-world scenes, e.g. architectural planning, finding parameter sets for these simple lights to match real-world luminaires is required for realistic work. This paper describes a simple approach to pro...

In this seminar, you will learn: 1. An explanation of the photometric measurement process and its relation to the accuracy and reliability of photometric reports. 2. An in-depth understanding of photometric reports, including IESNA LM-63, CIBSE TM14, and EULUMDAT file formats. 3. A non-technical analysis of lighting design software algorithms, with particular emphasis on understanding how they ...

Mitigation of post-occupancy building energy consumption has resulted in the change design to utilise ambient weather factors for indoor thermal conditioning and lighting. This increased construction new buildings with large glazing façades reduced adaptive use heritage as they are considered not designed meet modern requirements. paper evaluates daylighting performance a place instruction offi...

Perhaps one of the most fascinating and important subjects to be addressed in our industry over recent years is the effect of lamp spectral distribution on visibility. In the past, it has been widely accepted that under virtually all circumstances where artificial light is used, lighting level calculations could ignore spectral effects. In IESNA and CIE practice, recommended lighting levels do ...

The useful life of an LED is presently determined by the IESNA LM80-08 lumen maintenance standard. Even though an LED system has many components, the current industry practice rates LED system lifetime based on a single component, namely, the LED. LED system life is one of the least understood parameters, especially in application environments. As a result, any lifetime claim for a complete LED...

to effectively design daylight in buildings, daylight availability data are necessary. although there is a great potential for daylight energy in iran, its use has been hampered by the absence of measured data. in this paper the illuminance data on the vertical south facing surfaces of tehran were estimated using the iesna model. for this propose an illuminance measuring set was used in order t...

BACKGROUND Daylight availability data are essential for designing effectively day lighted buildings. In respect to no available daylight availability data in Iran, illuminance data on the south facing vertical surfaces were estimated using a proper method. METHODS An illuminance measuring set was designed for measuring vertical illuminances for standard times over 15 days at one hour interval...