Patent ID: 9250724
Filing Date: 2016-02-02
CPC Classification: G02B,G06F

Claim Text:
1. An information management system, comprising: a personal computer having a display; and an electronic underlay which capable of being laid under a sheet to perform writing with a writing tool, wherein the electronic underlay specifies a movement locus of a tip of the writing tool on a surface of the sheet, outputs the movement locus to the personal computer, and displays the movement locus on the display, wherein the electronic underlay comprises: wherein an elasticity modulus of the plurality of linear cores is larger than an elasticity modulus of the under cladding layer and an elasticity modulus of the over cladding layer, and wherein, in a state where the surface of the sheet-like optical waveguide is pressed by the tip of the writing tool, in a direction of the pressing, a deformation ratio of the plurality of linear cores in a cross section is smaller than deformation ratios of the over cladding layer and the under cladding layer in cross sections.