公开(公告)号：EP1281095A4

公开(公告)日：2005-07-06

申请号：EP01920523

申请日：2001-03-16

Applicant: XROS INC

Inventor： NEUKERMANS ARMAND P ,  RAMASWAMI RAJIV ,  HEANUE JOHN F ,  TREMAINE BRIAN P ,  SCHUMAN MARC

IPC: G02B6/26 ,  G02B6/35 ,  G02B26/08

CPC classification number: G02B6/359 ,  G02B6/266 ,  G02B6/352 ,  G02B6/3556 ,  G02B6/356 ,  G02B6/357 ,  G02B6/3588 ,  G02B6/3594

Abstract: One aspect is a method for controllably attenuating the beam of light (108) coupled between incoming and outgoing optical fibers (106) by misaligning mirror surfaces (116a, 116b) included of an optical switching module (100). Misalignment of the mirror surfaces (116a and 116b) causes only a portion of the beam of light (108) propagating along the incoming optical fiber (106), which is less than when the light beam deflectors' mirror surfaces (116) are precisely aligned, to propagate along the outgoing optical fiber (108). Thus, the optical switching module (100) controllably attenuates the beam of light (108) coupled between the incoming and the outgoing optical fibers (106). Another aspect is a variable-optical-attenuator ('VOA') (212) that includes an optically reflective membrane (222) upon which the beam of light (108) impinges. Application of an electrostatic field between an adjacent electrode (228) and the membrane (222) deforms the membrane (222) thereby attenuating an impinging beam of light (108).

公开(公告)号：EP0996922A4

公开(公告)日：2001-01-17

申请号：EP98939862

申请日：1998-07-23

Applicant: XROS INC

Inventor： NEUKERMANS ARMAND P ,  DOWNING JAMES P ,  SLATER TIMOTHY G

IPC: G06T1/00 ,  H04N1/00 ,  H04N1/107 ,  H04N1/12 ,  H04N1/193 ,  G06K7/10

CPC classification number: H04N1/00689 ,  H04N1/00885 ,  H04N1/00891 ,  H04N1/0476 ,  H04N1/107 ,  H04N1/1072 ,  H04N1/1078 ,  H04N1/121 ,  H04N1/193 ,  H04N2201/0096 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04737

Abstract: A document transport for a scanner (100) has a flexible, elongated finger (226) disposed adjacent to a document (134), and a force applied to the finger (226) urges teeth (233) on the finger (226) into contact with the document (134) which urges the document (134) along a path through the scanner (100). A piezoelectric plate (222), which applies the force to the finger (226), requires only a small amount of electrical power. To traverse the scanner (100), a document (134) may also be manually fed along a guide (272). First and second speed-sensing detectors (276a and 276b), disposed along the path traversed by the document (134), permit the scanner (100) to determine a speed at which the manually fed document (134) traverses the scanner (100). To conserve electrical energy, the scanner (100) also includes a document-presence detector (274) for activating the scanner (100) when a document (134) to be scanned is present.