Chinese Optics Letters, 2015, 13 (9): 092201, Published Online: Sep. 14, 2018
Light losses in hollow, prismatic light guides related to prism defects: a transmittance model Download: 904次
Abstract
Hollow, cylindrical, prismatic light guides (CPLGs) are optical components that, using total internal reflection (TIR), are able to transmit high-diameter light beams in daylight and artificial lighting applications without relevant losses. It is necessary to study the prism defects of their surfaces to quantify the behavior of these optical components. In this Letter, we analyze a CPLG made of a transparent dielectric material. Scanning electron microscopy (SEM) and the topographic optical profilometry by absorption in fluids (TOPAF) imaging technique are conducted to determine if there are defects in the corners of the prisms. A model for light guide transmittance that is dependent on prism defects is proposed. Finally, a simulation and an experimental study are carried out to check the validity of the proposed model.
Berta García-Fernández, Daniel Vázquez-Moliní, Antonio Álvarez Fernández-Balbuena, Angel García-Botella, Juan Carlos Martínez Antón. Light losses in hollow, prismatic light guides related to prism defects: a transmittance model[J]. Chinese Optics Letters, 2015, 13(9): 092201.