Design, manufacturing, and measurements of a metal-less V-groove RXI collimator

Dejan Grabovickic; Juan C. Miñano; Pablo Benítez; Cristina Cocho; Marina Buljan

doi:10.1117/12.894614

21 September 2011 Design, manufacturing, and measurements of a metal-less V-groove RXI collimator

Dejan Grabovickic, Juan C. Miñano, Pablo Benítez, Cristina Cocho, Marina Buljan

Proceedings Volume 8124, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VIII; 812404 (2011) https://doi.org/10.1117/12.894614
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

A metal-less RXI collimator has been designed. Unlike to the conventional RXI collimators, whose back surface and central part of the front surface have to be metalized, this collimator does not include any mirrored surface. The back surface is designed as a grooved surface providing two TIR reflections for all rays impinging on it. The main advantage of the presented design is lower manufacturing cost since there is no need for the expensive process of metalization. Also, unlike to the conventional RXI collimators this design performs good colour mixing. The first prototype of V-groove RXI collimator has been made of PMMA by direct cutting using a five axis diamond turning machine. The experimental measurements of the first prototype are presented.

Citation Download Citation

Dejan Grabovickic, Juan C. Miñano, Pablo Benítez, Cristina Cocho, and Marina Buljan "Design, manufacturing, and measurements of a metal-less V-groove RXI collimator", Proc. SPIE 8124, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VIII, 812404 (21 September 2011); https://doi.org/10.1117/12.894614

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