21 August 2009 Parametric and scattering characterization of PDMS membranes for optical applications
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Today elastic membranes are being used more frequent as optical surfaces in the science or in the industry. This due to the advantages that they display in their handling and in their cost of production. These characteristics make them ideals to apply them in micro-optical components and Tunable Focus Liquid Filled Length Lens (TFLFLL). In order to know if a membrane of PDMS (PDMS Sylgard 184) is feasible for a specific application within the field of the optics, it is necessary to know its mechanical, optical and chemical properties. In this work the parametric membrane characterization is reported for an optical application. An important factor in the performance of these membranes is related with their scattering factor that is produced due to the roughness and impurities (micro-bubbles or dust particles). These membranes are used as refractive surface in TFLFLL. Experimental results of the characterization process and device performance are presented.
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A. Santiago-Alvarado, S. Vazquez Montiel, J. Munoz-Lopez, J. Castro-Ramos, and J. A. Delgado Atencio "Parametric and scattering characterization of PDMS membranes for optical applications", Proc. SPIE 7426, Optical Manufacturing and Testing VIII, 742615 (21 August 2009); doi: 10.1117/12.826550; https://doi.org/10.1117/12.826550

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