Title:
POSITION SENSOR AND SHEET-SHAPED OPTICAL WAVEGUIDE USED IN SAME
Document Type and Number:
WIPO Patent Application WO/2015/156111
Kind Code:
A1
Abstract:
Provided are: a position sensor such that when information such as characters are input by means of an input body such as a pen, unnecessary sections such as the little finger of the hand holding the input body, the base section of said little finger, and the like are not detected; and a sheet-shaped optical waveguide used in same. The position sensor (A) is provided with: a sheet-shaped optical waveguide (W) in which a lattice-shaped core (2) is sandwiched by an under-cladding layer (1) and an over-cladding layer (3); a light-emitting element (4) connected to one end surface of the core (2); and a light receiving element (5) connected to the other end surface of the core (2). The elastic modulus of the core (2) is set to be greater than the elastic moduli of the under-cladding layer (1) and over-cladding layer (3), when the surface of the sheet-shaped optical waveguide (W) is pressed, the rate of deformation of the cross-section of the core (2) in the pressing direction is less than the rate of deformation of the cross-section of the under-cladding layer (1) and over-cladding layer (3). The intersecting sections of the lattice-shaped core (2) are such that at least one direction of intersection is split by a gap and thus is a discontinuous intersection.
Inventors:
SHIMIZU YUSUKE (JP)
YOSHIOKA RYOMA (JP)
YOSHIOKA RYOMA (JP)
Application Number:
PCT/JP2015/058802
Publication Date:
October 15, 2015
Filing Date:
March 24, 2015
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G06F3/042; G02B6/12; G02B6/125
Domestic Patent References:
| WO2012002222A1 | 2012-01-05 |
Foreign References:
| JP2005107804A | 2005-04-21 | |||
| JP2009300688A | 2009-12-24 |
Attorney, Agent or Firm:
SAITOH Yukihiko et al. (JP)
Masahiko Nishifuji (JP)
Masahiko Nishifuji (JP)
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