Optical finger navigation device with a folded air lens

Details Optical finger navigation device with a folded air lens Optical finger navigation device with a folded air lens

2008-02-07

2010-12-21

Dinh, Jack (Department: 2873)

Optical: systems and elements

Lens

With reflecting element

C359S727000, C359S733000, C359S736000

Reexamination Certificate

active

07855843

ABSTRACT:
A fingerprint navigation system with a folded air lens structure and a folded air lens. The system includes a light source, a folded air lens structure, a light reflector, and a navigation sensor. The folded air lens structure is aligned to direct light from the light source to an object surface. The folded air lens structure includes a first portion and a second portion. The light reflector is aligned to direct the light from the first portion of the folded air lens structure to the second portion of the folded air lens structure. The navigation sensor is calibrated to produce a navigation image corresponding to the light directed through the folded air lens structure and the folded air lens.

REFERENCES:
patent: 6124986 (2000-09-01), Sekita et al.
patent: 2006/0208170 (2006-09-01), Xie

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