Eye Scanner with Integrated Focus Distance Determination Mechanism
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United States of America Patent
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N/A
Issued Date -
Apr 9, 2009
app pub date -
Oct 5, 2007
filing date -
Oct 5, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A hand-held iris scanner, used for identifying individuals, has a visor mechanism connected to the main body of the scanner via a hinged attachment. The visor mechanism can be folded and locked into an extended position, wherein the free-floating end of the visor (that is, the non-hinged end) provides a contoured surface against which a user may place his or her forehead. By placing the forehead against the visor, the user automatically positions their eyes within a field of view of the scanner optics, and at a substantially optimum distance for correctly focused imaging by the scanner optical system. The visor mechanism may also be folded and locked into a second position wherein the bulk of the visor is substantially flush with the main body of the scanner, allowing for compact storage. An optional cap attachment on the visor provides a cover mechanism to protect the scanner optics when the scanner is not in use.
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