Palm print scanner and methods

• US 7,081,951 B2
• Filed: 10/08/2004
• Issued: 07/25/2006
• Est. Priority Date: 10/09/2003
• Status: Active Grant

• Current Assignee: HID Global Corporation (Assa Abloy AB)
• Original Assignee: Cross Match Technologies Incorporated (Assa Abloy AB)
• Inventors: McClurg, George W., Carver, John F.
• Primary Examiner(s): STAFIRA, MICHAEL PATRICK
• Application Number:
  US10/960,747
• Publication Number:
  US 20050105078A1
• Time in Patent Office: 655 Days
• Field of Search: 356/71, 382/127, 359/831
• US Class Current: 356/71
• CPC Class Codes: G06V 40/1324 by using geometrical optics, e.g. using prisms G06V40/1312 takes precedence

Abstract

A live print scanner includes a transparent tray platen apparatus and a scanning system. The transparent tray platen apparatus includes a base region attached to two rounded side regions. The base region of the tray platen assembly includes a convex portion. A hand is placed atop the base region adjacent to one of the two rounded side regions such that the hand'"'"'s palm pocket is atop the convex portion. A sensor assembly within the rotary scanning system generates a complete image of a palm print pattern. Because of the side regions and the convex portion, the image generated includes an image of a print pattern on the palm pocket as well as on the side of the palm. A holographic element may be disposed in a light path between an illumination source and the sensor.

Claims

1. An optical element for use in a system for scanning a hand, comprising:

a base region sized and shaped to be in contact with a palm of a hand; and

a first side region sized and shaped, and positioned with respect to the base region, to be in contact with a side of the hand while the palm is in contact with the base region, wherein the first side region is configured to produce a print image of the side of the hand responsive to light directed through the first side region to a side platen surface thereof in contact with the side of the hand.

2. The optical element of claim 1, wherein the base region is configured to produce a print image of the palm responsive to light directed through the base region to a base platen surface thereof in contact with the palm.

3. The optical element of claim 2, wherein the base region is configured to produce the print image of the palm as a result of total internal reflection of the light within the base region.

4. The optical element of claim 1, wherein the first side region is configured to produce the print image of the side of the hand as a result of total internal reflection of the light within the first side region.

5. The optical element of claim 1, wherein at least one of the base region and the first side region includes a coating comprising an optically transparent material.

6. The optical element of claim 5, wherein the optically transparent material is silicone.

7. An optical element for use in a system for scanning a hand, comprising:

a base region sized and shaped to be in contact with a palm of a hand;

a first side region sized and shaped, and positioned with respect to the base region, to be in contact with a side of a second hand while a palm of the second hand is in contact with the base region.

a second side region sized and shaped, and positioned with respect to the base region, to be in contact with a side of a second hand while a palm of the second hand is in contact with the base region.

8. The optical element of claim 7, wherein the second side region is positioned opposite the first side region.

9. An optical element for use in a system for scanning a hand, comprising:

a base region sized and shaped to be in contact with a palm of a hand;

a first side region sized and shaped, and positioned with respect to the base region, to be in contact with a side of the hand while the palm is in contact with the base region; and

at least one holographic element coupled to the base region and the first side region.

10. An optical element for use in a system for scanning first and second hands, comprising:

a first base region sized and shaped to be in contact with a palm of the first hand;

a first side region sized and shaped, and positioned with respect to the first base region, to be in contact with a side of the first hand while the palm of the first hand is in contact with the first base region;

a second base region, adjacent the first base region, sized and shaped to be in contact with a palm of the second hand; and

a second side region sized and shaped, and positioned with respect to the second base region, to be in contact with a side of the second hand while the palm of the second hand is in optical contact with the second base region.

11. The optical element of claim 10, wherein the first side region includes a first side platen surface and the second side region includes a second side platen surface substantially parallel to the first side platen surface.

12. The optical element of claim 10, wherein the first side region includes a first side platen surface and the second side region includes a second side platen surface opposite the first side platen surface, and wherein a separation distance between the first and second side platen surfaces is tapered.

13. The optical element of claim 10, further comprising at least one holographic element positioned to result in total internal reflection in at least one of the first base region, the first side region, the second base region, and the second side region.

14. The optical element of claim 10, wherein at least one of the first base region, the first side region, the second base region, and the second side region is coated with an optically transparent material.

15. The optical element of claim 14, wherein the optically transparent material is silicone.

16. A print scanner for scanning an underside of a hand including a palm, and hypothenar and writer'"'"'s palm regions on a side of the hand extending up from the palm, comprising:

a transparent tray platen apparatus for receiving an underside of a hand having a print pattern;

a holographic element coupled to the transparent tray platen apparatus; and

a scanning assembly for scanning the print pattern through the holographic element to capture an image of the scanned print pattern including the print pattern at or near a palm pocket, a hypothenar region, and a writer'"'"'s palm.