Optical Device for Producing a Frustration-capable Total Internal Reflection and Use Thereof

The aim was to create a device for frustration-capable total internal reflection having the lowest possible design effort and a small size, by means of which the optical conditions of the total reflection can also be influenced for the most universal use possible. According to the invention, a substrate (7) having a surface designed as an optical phase grating (8) is used as an internal reflection element (IRE) for coupling the light (9, 12) in and out. The invention is used to evaluate frustrated total internal reflection, for example as an image or surface sensor for detecting handprints or fingerprints.

Patents:
WO 2,011,063,783

Inventor(s): KLEY ERNST-BERNHARD [DE]; REINHOLD JOERG [DE]

Type of Offer: Sale



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