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Proceedings Paper

Metal-less V-groove RXI collimator
Author(s): Dejan Grabovičkić; Juan C. Miñano; Pablo Benítez; Jesús López; Juan Vilaplana; Guillermo Biot; Marina Buljan
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Paper Abstract

A metal-less RXI collimator has been designed using the Simultaneous multiple surface method (SMS). The collimator is completely made of plastic (PMMA) and does not include any mirrored surface, unlike to the convectional RXI collimators, whose back surface is metalized to provide a specular reflection. The back surface of the V-groove RXI 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 experimental measurements of the first prototype are presented.

Paper Details

Date Published: 21 September 2011
PDF: 9 pages
Proc. SPIE 8170, Illumination Optics II, 81700G (21 September 2011); doi: 10.1117/12.896783
Show Author Affiliations
Dejan Grabovičkić, Univ. Politécnica de Madrid (Spain)
Juan C. Miñano, Univ. Politécnica de Madrid (Spain)
Light Prescriptions Innovators, LLC (United States)
Pablo Benítez, Univ. Politécnica de Madrid (Spain)
Light Prescriptions Innovators, LLC (United States)
Jesús López, Univ. Politécnica de Madrid (Spain)
Juan Vilaplana, Light Prescriptions Innovators, LLC (United States)
Guillermo Biot, Univ. Politécnica de Madrid (Spain)
Marina Buljan, Univ. Politécnica de Madrid (Spain)

Published in SPIE Proceedings Vol. 8170:
Illumination Optics II
Tina E. Kidger; Stuart David, Editor(s)

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