Abstract
The field of indoor lighting covers a wide range of lighting uses with varying requirements for lighting conditions to be satisfied by properly selected lighting equipment. The need to frequently change the arrangement of useable areas entails the necessity to adapt the lighting to new requirements. A good solution for reducing costs and saving time is a luminaire adjusting the luminous flux and spatial luminous intensity distribution in a wide range. The authors present the concept of an adaptive luminaire and its construction assumptions. In addition, the results of studies on the development of the concept are shown together with conditions and limitations that influenced the construction of the luminaire. The analysis of the surface of the moveable reflector is presented, and the results of testing the luminaire prototype are compared with the results of simulation tests.
Highlights
The development and dissemination of semiconductor light sources has forced a new approach to luminaire design [1]
The indoor lighting covers a wide range of lighting uses with varying requirements for lighting conditions that must be satisfied by properly selected lighting equipment [7,8,9,10]
Manufacturers of lighting equipment are required to offer products with different power ratings and luminous intensity distribution requirements to satisfy the needs of various functional zones
Summary
The development and dissemination of semiconductor light sources has forced a new approach to luminaire design [1]. Selected luminaires with a rotationally symmetrical solid ofof light distribution and different type of optical system: reflector type, uncovered with optional diffusing glass,. The use of lenses in luminaires with LED sources allows for wide possibilities of forming distribution ranging from obtuse to focused beams (Figure 2c) [25]. It is usually impossible to change the light direction, but some design solutions allow to adjust the to adjust the position of the entire luminaire or a part of it in the case of modular construction (such position of the entire luminaire or a part of it in the case of modular construction (such as the luminaire as the luminaire shown in Figure 2c) [25].
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