Optische Faserplatte

Fiber optical plate

Panneau à fibres optiques

Abstract

When a fiber optical plate is applied to a touch sensor, a flat touch surface can be formed, and the overall device using the fiber optical plate can be formed into a low-profile structure. The numerical aperture of the input end face of one slant FOP is set to be larger than that of the output end face of another slant FOP to cause light incident from the latter slant FOP to be efficiently incident on the former slant FOP. The detection surface and the output end face are located to be orthogonal to each other. With this structure, the detection surface can be formed evenly with the touch surface. In addition, detection elements such as a CCD can be disposed at the output end face along the lower surface of the touch surface.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    US-4932776-AJune 12, 1990Fingerprint Technology, Inc.Fingerprint acquisition system

NO-Patent Citations (0)

    Title

Cited By (9)

    Publication numberPublication dateAssigneeTitle
    EP-0813165-A2December 17, 1997Hamamatsu Photonics K.K.Fiberoptischer Block und Verwendung in einem Fingerabdruckdetektor
    EP-0813165-A3October 06, 1999Hamamatsu Photonics K.K.Fiberoptischer Block und Verwendung in einem Fingerabdruckdetektor
    EP-0821248-A2January 28, 1998Hamamatsu Photonics K.K.Elément à fibre optique, élément photorécepteur, et dispositif d'acquisition de structure
    EP-0821248-A3October 27, 1999Hamamatsu Photonics K.K.Faseroptisches Element, lichtempfangendes Element, und Vorrichtung zur Mustererfassung
    EP-1001284-A1May 17, 2000Hamamatsu Photonics K.K.Optisches element und eine abbildungseinheit, abbildungsvorrichtung, strahlungsbildsensor und fingerabdruckanalysator unter verwendung derselben
    EP-1001284-A4September 06, 2000Hamamatsu Photonics KkOptical element, and imaging unit, imaging apparatus, radiation image sensor and fingerprint collator which use the same
    GB-2387448-AOctober 15, 2003Point Source LtdOptic fibre having inclined planar end face
    GB-2387448-BSeptember 01, 2004Point Source LtdOptical fibre having angled planar end face
    US-7006724-B2February 28, 2006Point Source LimitedOptical fibers