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Continuous profile microlenses fabricated on photographic emulsion using binary masks

SC

Membre a labase

Sergio Calixto

Résumé du colloque

We analyzed the capacity of silver halide emulsion for forming continuous profile microlenses starting from a binary mask. The fabrication method involves the recording of the reduced image of a binary mask on the emulsion by means of a photographic objective. Smoothing of the transmittance binary profile of the mask is achieved in a first case for the modulation transfer function of the emulsion. In a second case, smoothing is obtained by means of a defocus deliberately introduced during the photographic process. Microlenses of diameters ranging from 50 to 500 micrometers have been fabricated. Results of testing the surface relief and analyzing the capacity of the microlenses for forming the image of an object are shown. At the moment, fabrication of continuous profile microlenses using half-tone mask is being investigated.

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host icon Hôte : Université de Sherbrooke

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