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The design and the development of a low-cost luminaire in order to achieve the best light-technology parameters (Ra ≫ 80) and a life-time period

This paper deals with the operating of so called low-cost lighting systems fitted with LED light sources. The reason for drawing up the paper was a notification of qualitative changes in luminous flux of implemented lighting systems. It is currently possible to produce relatively cheap LED luminaires fitted with available white LED. Since the low-priced LED go hand in hand with their qualities, these cheap light sources might affect negatively the overall perception of the illuminated space. Therefore it is necessary to explore these light sources in details. The paper shows the design and development of an inexpensive luminaire so as to achieve not only the best possible light-technical parameters, but also its life-time period.