SYSTEMS AND METHODS FOR CAPTURING IMAGES USING A PRESSURE SENSITIVE MEMBRANE

摘要

A total internal reflection based imaging system may include a light transmitting member having an imaging surface. A pressure sensitive membrane may be arranged on the imaging surface. The pressure sensitive membrane may include a top surface, a bottom surface, and an elastic deformable film forming at least a portion of the top surface. The imaging system may include a textured surface disposed between the pressure sensitive membrane and the imaging surface. An application of pressure on the top surface may deform the deformable film to reduce a distance between the deformable film and the imaging surface. A light source may be configured to emit a light towards the imaging surface such that reduced total internal reflection of the light occurs where the bottom surface of the pressure sensitive membrane contacts the imaging surface. A sensor may be configured to capture the light reflected from the imaging surface.

主权项

1. A pressure sensitive membrane including:
a top surface; a bottom surface opposite the top surface; and an elastic deformable film forming at least a portion of the top surface; and a textured surface disposed between the bottom surface and an imaging surface of a light transmitting member, the textured surface being in contact with at least a portion of the bottom surface of the pressure sensitive membrane or in contact with at least a portion of the imaging surface, the textured surface holding the pressure sensitive membrane at a default position, the textured surface and/or the pressure sensitive membrane being formed such that an application of pressure at any location on the top surface of the pressure sensitive membrane deforms the deformable film to reduce a distance between the deformable film and the imaging surface at such location.