RT Journal Article T1 Efficient and sustainable energy lighting solutions A1 García Botella, Ángel A1 Vázquez Moliní, Daniel A1 García Fernández, Berta A1 Álvarez Fernández-Balbuena, Antonio AB The electric lighting is responsible for 15% of the electricity consumption, the efficiency in this sector has a good progress in recent years, it can still improve more. Conventional energy sources are polluting and limited, so it is essential to use less aggressive energies with the environment. In lighting, this premise is being implemented in a cross-cutting manner, but in response to varied and sometimes contradictory interests. The development of lighting devices based on solar radiation is an inalienable objective, as is the use of artificial lighting sources that are clean with the environment. To achieve these two objectives, it is essential to know and study the design techniques of non-image optics. In the present work we present new systems design techniques and lighting elements: ray tracing optimization technique, light vector field technique. As well as its implementation and application in various areas of lighting: lighting in office buildings, libraries museums. We show that renewable energy strategy in the field of lighting not only produce energy save, also produce good effects in other aspects of human life like well-being, productivity and heritage conservation. PB SPIE SN 0277-786X YR 2019 FD 2019 LK https://hdl.handle.net/20.500.14352/13616 UL https://hdl.handle.net/20.500.14352/13616 LA eng NO Proceedings Volume 11120, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XVI; 111200Q (2019)Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United StatesCopyright 2019. Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. DS Docta Complutense RD 15 dic 2025