TW201546686A - Information processing system - Google Patents

Abstract

Provided is an information processing system that, when inscribing to paper by means of a writing implement, causes unnecessary sections such as the little finger of the hand holding the writing implement or the base of said little finger to not be detected, converts the inscribed contents to electronic data at the same time as the inscribing to the paper, and manages the electronic data. The information management system is provided with: a personal computer having a display; and a position sensor used while laid beneath the paper inscribed to by the writing implement. The position sensor is provided with: a sheet-shaped optical waveguide in which a lattice-shaped core is sandwiched by a sheet-shaped under-cladding layer and over-cladding layer; a light-emitting element connected to one end surface of the core; and a light-receiving element connected to the other end surface of the core. The elastic modulus of the core is set greater than the elastic modulus of the under-cladding layer and the elastic modulus of the over-cladding layer. The intersecting sections of the lattice-shaped core are such that at least one direction of intersection is split by a gap, and is thus a discontinuous intersection.

Description

Information management system Field of invention

The present invention relates to an information management system in which a pad is written under the paper for writing characters or the like, and the content of the paper is used as digital data (electronic data).

Background of the invention

For example, when applying for a sports club, it is usually necessary for the applicant to fill in the necessary documents such as the address and name on the application paper for the sports club. Then, in order to manage the attendees, the staff of the sports club will fill in the information such as the address of the application paper and input it into a personal computer (hereinafter referred to as "computer") using a keyboard (for example, refer to the patent document). 1).

Prior technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2007-034907

Summary of invention

However, after the applicant has completed the application paper, the applicant will work. The input of personnel to the computer not only takes time, but also labor of the staff. Moreover, when the computer is input, there is a concern that an input error occurs due to an operation error of the keyboard. In addition, the sports club also needs cost in managing the above-mentioned application paper.

Then, the applicant of the present invention has proposed a notebook device which can directly electronically insert a character or the like of a paper, and has already applied for it (Japanese Patent Laid-Open Publication No. 2012-160160). The notebook device is provided with a rectangular frame-shaped optical waveguide, and is formed such that light travels in a lattice shape in the square frame. And inserting the four-corner-shaped optical waveguide on the paper of the type of the notebook that is bound to the note-taking tool, and when the writing instrument is used to fill in the characters or the like on the portion of the paper exposed from the square frame, The nib covers the above-mentioned light traveling in a lattice shape, and the position of the nib can be detected from the shading position, and the filled characters and the like can be specified as electronic materials. That is to say, the above-described notebook device can directly electronically text or the like that is filled with paper.

However, depending on the situation, in the notebook device described above, when the little finger or the finger root portion (small fish) of the hand holding the pen or the like is inserted into the square frame, the part of the hand may also obscure the above. The lattice-like light is also judged to be a text that is filled in, and is electronically materialized. However, the electronic data of the part of the hand is not required.

The present invention has been made in view of such circumstances, and an object thereof is to provide an information management system which is not caused by a shader such as the one described above but by a pen press according to a writing instrument such as a pen applied to an optical waveguide. The change in the light transmission of the core material, therefore, is not used as described above for placing it on paper, but is used under paper, and in the notes When the paper is filled in, the unnecessary part such as the little finger or the finger base of the hand holding the writing instrument is not detected, and the filling content can be electronicallyized and managed while the paper is being filled. The electronic material.

In order to achieve the above object, the information management system of the present invention is an information management system including a computer including a display and a position sensor of the following (A), and the position sensor of the following (A) is padded Use it under the paper that the writing utensils are written. There is a configuration in which the position sensor specifies a movement trajectory of the front end of the writing instrument on the surface of the paper to be output to the computer and displayed on the display.

(A) is a position sensor including a plate-shaped optical waveguide, a light-emitting element, a light-receiving element, and a movement-track-specific mechanism, and the plate-shaped optical waveguide has a plurality of linear core materials formed in a lattice shape, and Supporting the underlying cladding layer of the core material and covering the upper cladding layer of the core material, and the surface of the upper cladding layer is used as a contact surface with the paper, and the light emitting element is connected to one of the core materials An end surface, the light receiving element is coupled to the other end surface of the core material, and the movement trajectory specifying mechanism specifies a movement trajectory of the front end of the writing instrument on the surface of the optical waveguide by a light propagation amount of the core material that changes according to the movement Its movement track. The position sensor is formed such that a part or all of the intersection portions of the lattice shape formed by the plurality of linear core materials are formed in a discontinuous cross state in a state in which the gap is broken in at least one direction of the intersection. And setting the elastic modulus of the core material to be larger than the elastic modulus of the lower cladding layer and the elastic modulus of the upper cladding layer, and the pressing of the tip end of the writing instrument on the surface of the plate-shaped optical waveguide State, The deformation rate of the cross section of the core material in the pressing direction is formed to be smaller than the deformation rate of the cross section of the upper cladding layer and the lower cladding layer.

In addition, the "deformation rate" in the present invention means the ratio of the amount of change in thickness of each of the core material, the upper cladding layer, and the lower cladding layer in the pressing direction with respect to each thickness before pressing. . Further, the "movement" at the front end of the writing instrument includes a case where the moving distance is 0 (zero), and the "moving track" in this case becomes a point.

Further, in the above-described plate-shaped optical waveguide, a part of the lattice shape formed by the plurality of linear core materials or even all of the intersecting portions are formed in a state in which the gap is broken in at least one direction of the intersection. When crossing continuously, the cross loss of light can be reduced. The inventors of the present invention have obtained such knowledge and insights.

The information management system of the present invention includes a position sensor that can be used underneath the paper filled with the note. Further, the position sensor is provided with a plate-shaped optical waveguide that sets the elastic modulus of the core material to be larger than the elastic modulus of the lower cladding layer and the elastic modulus of the upper cladding layer. Therefore, when the surface of the cladding layer on the plate-shaped optical waveguide is pressed, the deformation rate of the cross-section of the core material in the pressing direction becomes smaller than the deformation rate of the cross-section of the upper cladding layer and the lower cladding layer. And the cross-sectional area of the core material in the pressing direction can be maintained. Further, when paper is placed on the surface of the cladding layer on the plate-shaped optical waveguide, and a character or the like is filled on the paper with a writing instrument such as a pen, the pen pressure of the front end (pen tip, etc.) and the holding note are held. The pressure formed by the portion of the hand of the appliance is transmitted to the upper cladding layer by the paper, and the surface of the upper cladding layer is pressed. In this way, The pressing portion formed by the front end of the writing instrument, the bending of the core material is sharply bent along the front end of the writing instrument, and leakage (scattering) of light from the core material occurs, and the hand holding the writing instrument is held. On the pressed portion formed in part, the bending of the core material is gently curved along the hand, and leakage (scattering) of the above light does not occur. Therefore, the degree of detection (light-receiving amount) of light on the light-receiving element is lowered on the core material pressed by the tip end or the like, and the degree of detection is on the core material pressed by the portion holding the hand of the writing instrument. Will not lower. Further, the position of the leading end of the pen tip or the like can be detected by the movement trajectory specific mechanism, and the position (coordinate) of the tip end of the pen tip or the like can be detected, and the portion of the hand whose detection degree is not lowered is the same as the state in which the pressing is not performed. Will not be detected. Further, it is possible to reduce the cross of light by forming a portion of the lattice shape formed by the core material or all of the intersecting portions in at least one direction of the intersection so as to be discontinuously intersected in a state in which the gap is broken. loss. Therefore, the detection sensitivity of the position of the tip end such as the pen tip can be improved. As a result, it is possible to detect only the movement trajectory of the tip end such as the pen tip (filling in information such as characters). Moreover, the movement track of the front end of the pen tip or the like can be output to the computer as electronic data and displayed on the display of the computer. In other words, the information such as the text of the paper can be electronically digitized while being filled in, and can be sorted by a computer and managed.

1‧‧‧Under cladding

2‧‧‧ core material

2a‧‧‧ wall

3‧‧‧Upper coating

4‧‧‧Lighting elements

5‧‧‧Light-receiving components

6‧‧‧ circuit board

7‧‧‧Rigid board

10‧‧‧Notes

10a‧‧‧ front end

20‧‧‧ hands

A‧‧‧ position sensor

C‧‧‧Connecting cable

D‧‧‧ display

‧‧‧Width

G‧‧‧ gap

K‧‧‧ paper

P‧‧‧ computer

W‧‧‧ optical waveguide

Fig. 1 is an explanatory view schematically showing an embodiment of an information management system of the present invention.

Fig. 2 is a plan view schematically showing a position sensor constituting the above information management system.

Fig. 3 (a) is an enlarged plan view schematically showing an intersection of a lattice-shaped core material in the position sensor, and (b) is an enlarged view of a cross section of a central portion of the position sensor. An enlarged cross-sectional view of the representation.

Fig. 4(a) is an enlarged plan view schematically showing a path of travel of light in a continuous intersection, and Fig. 4(b) is an enlarged plan view schematically showing a path of travel of light in a discontinuous intersection.

Fig. 5 (a) is a cross-sectional view schematically showing a state of a plate-shaped optical waveguide of the position sensor pressed by a writing instrument with a sheet of paper, and (b) is a plate-shaped light which is pressed by a hand with a sheet of paper. A cross-sectional view of the state of the waveguide.

6(a) to 6(e) are enlarged plan views schematically showing a modification of the intersection of the lattice-shaped core members.

Form for implementing the invention

Next, an embodiment of the present invention will be described in detail based on the drawings.

Fig. 1 shows an embodiment of the information management system of the present invention. The information management system of this embodiment includes a computer P having a display D, and a position sensor A that is used under the paper K filled in with the writing instrument 10 such as a pen. Further, in this embodiment, the computer P and the position sensor A are connected by a connection cable C such as a USB cable, and the information such as the characters of the paper K is filled and detected by the position sensor A, and It is output to the computer P through the connection cable C and displayed on the display D.

The position sensor A has a plan view as shown in FIG. 2, and includes a plate-shaped optical waveguide W having a square shape of a core member 2 in a lattice shape, and is connected thereto. a light-emitting element 4 constituting one end surface of the linear core material 2 of the lattice-shaped core material 2, a light-receiving element 5 connected to the other end surface of the linear core material 2, and a mounting device for controlling the position sensing A CPU (Central Processing Unit) (not shown) of the device A, and the above-described light-emitting element 4 and the circuit board 6 of the light-receiving element 5. In this embodiment, the plate-shaped optical waveguide W and the circuit board 6 are provided on the surface of the rigid board 7 such as a resin board or a metal plate. Further, the light emitted from the light-emitting element 4 is formed to pass through the core member 2, and is received by the light-receiving element 5. In addition, in FIG. 2, the core material 2 is shown by the broken line, and the thickness of the core material 2 is shown by the thickness of the broken line. In addition, in FIG. 2, the number of core materials 2 is shown in figure. In addition, the arrow of FIG. 2 represents the advancing direction of light.

Further, in this embodiment, a power source (see FIG. 1) required for supplying the light-emitting element 4, the CPU, and the like from the computer P through the connection cable C is formed. Further, when the position sensor A is used under the paper K, the plate-shaped optical waveguide W of the position sensor A is coated on the cladding layer 3 (refer to Figs. 5(a), (b). The surface of the surface is the contact surface with the paper K described above. The input area in the paper K is a portion corresponding to the lattice-shaped core material 2 (see FIG. 2) of the plate-shaped optical waveguide W of the position sensor A. In addition, the input of the information on the paper K by the above-described writing instrument 10 (see FIG. 1) is such that the front end (pen tip or the like) 10a of the writing instrument 10 is written such that characters or the like are written on the surface of the paper K (see FIG. 1) It is carried out by moving the surface of the paper K.

Further, in this embodiment, as shown in the plan view of Fig. 3(a), the intersection portions of the lattice-shaped core members 2 of the plate-shaped optical waveguide W are such that all four directions of intersection are broken by the gap G. Open, and become discontinuous. on The width d of the gap G is set to exceed 0 (zero) (as long as the gap G is formed), and is usually set to 20 μm or less. Further, as shown in the cross-sectional view of Fig. 3(b), the plate-shaped optical waveguide W is supported by the cladding layer 1 in which the lattice-shaped core material 2 is received in a plate shape, and is coated on a plate shape. The layer 3 is formed in a state of being covered. In this embodiment, the gap G is formed by the material for forming the cladding layer 3.

In this manner, in the lattice-shaped core member 2, when the intersection portion is made discontinuous, the cross loss of light can be reduced. That is, as shown in FIG. 4(a), in all of the four intersecting directions, which are continuous intersections, when focusing on one direction of the intersection [upward direction in FIG. 4(a)] When a part of the light incident on the intersection portion reaches the wall surface 2a of the core material 2 perpendicular to the core material 2 from which the light advances, and because the reflection angle at the wall surface is large, the core material is penetrated. 2 [Refer to the arrow of the two-point chain line of Fig. 4(a)]. The penetration of light like this also occurs in the direction of the opposite side of the intersection [the direction below (a) in Fig. 4]. On the other hand, as shown in FIG. 4( b ), when one of the intersecting directions (the upward direction in FIG. 4( b )) is discontinuous due to the gap G, the gap G and the core material 2 are formed. Interface, and a part of the light penetrating the core material 2 in Fig. 4(a), the reflection angle at the above interface will be small, so there will be no penetration, but reflect at the interface, and continue Advancing in the core material 2 (refer to the arrow of the two-point chain line of Fig. 4(b)]. The reflection of light like this also occurs in the direction opposite to the opposite side (the downward direction in Fig. 4(b)). From this, it can be seen that, as described above, when the intersection portion is made discontinuous, the cross loss of light can be reduced.

Further, the plate-shaped optical waveguide W is the elasticity of the core material 2 The rate is set to be larger than the elastic modulus of the lower cladding layer 1 and the elastic modulus of the upper cladding layer 3. Thereby, when the surface of the plate-shaped optical waveguide W is pressed, the deformation rate of the cross section of the core material 2 in the pressing direction can be made larger than the deformation rate of the cross section of the upper cladding layer 3 and the lower cladding layer 1 Be small.

In other words, as shown in the cross-sectional views of the paper K, when the information on the surface of the paper K is filled with a writing instrument such as a pen held on the hand 20, information such as characters is input. The pressure formed by the tip end 10a such as the pen tip, and the pressure formed by the little finger of the hand 20 holding the writing instrument 10 or the finger base portion thereof (small fish) are transmitted to the upper cladding layer 3 through the paper K. The surface of the upper cladding layer 3 is pressed. Thereby, the pressing portion formed by the tip end 10a of the pen tip or the like (see FIG. 5(a)) and the pressing portion formed by the portion of the hand 20 (see FIG. 5(b)) are both in the cross section of the pressing direction. The upper cladding layer 3 and the lower cladding layer 1 having a small modulus of elasticity are deformed into a flattened state, and the core material 2 having a large elastic modulus is maintained in a state of a sectional area as it is, and is along a tip end 10a of the pen tip or the like or a portion of the hand 20 Bending into the lower cladding layer 1.

Further, as shown in FIG. 5(a), since the tip end 10a is pointed at the pressing portion formed at the tip end 10a, the bending of the core member 2 becomes impatient, and light from the core member 2 occurs. Leakage (scattering) [refer to the arrow of the two-point chain line of Fig. 5(a)]. On the other hand, as shown in Fig. 5 (b), on the pressing portion formed by the hand 20 holding the writing instrument 10, since the hand 20 and the front end 10a of the writing instrument 10 are relatively large and become relatively thinner The circle is rounded, so that the bending of the core material 2 becomes gentle, and the above-mentioned light leakage (scattering) does not occur (the light advances without leaking in the core material 2) [refer to the arrow of the two-point chain line of FIG. 5(b) ]. Therefore, it can be achieved: on the core material 2 pressed by the front end 10a, The degree of detection of light in the light receiving element 5 is lowered, and the degree of detection is not lowered on the core material 2 pressed by the hand 20 holding the writing instrument 10. Further, the position (coordinate) of the distal end 10a can be detected from the decrease in the degree of detection of the light. Since the portion of the hand 20 whose degree of detection is not lowered is the same as the state in which it is not pressed, it is not detected.

In this case, as described above, the lattice-shaped intersection portion formed by the core material 2 is formed so as to be discontinuously intersected, and the cross-loss loss of light can be reduced. Therefore, the tip end 10a of the pen tip or the like can be used. The detection sensitivity of the position becomes high.

Then, in the CPU of the position sensor A, a program (moving trajectory specifying means) for determining the movement trajectory of the front end 10a such as the nib is reduced by the degree of detection of the light from the light receiving element 5. That is to say, the position sensor A becomes a position sensor that detects the position of the leading end (pen tip or the like) 10a of the writing instrument (pen or the like) 10 used for input of information. Further, the data indicating the movement trajectory of the front end 10a of the writing instrument 10 is output to the computer P through the connection cable C, and is appropriately imaged on the computer P, and the movement trajectory is displayed on the display D. on.

In the information management system described above, when the position sensor A is used to fill in the information such as characters on the paper K, the information such as characters can be electronically encoded and output to the computer P. Also, the computer P can be used to save (memorize) or organize the electronic material for proper management.

Further, in the above-described plate-shaped optical waveguide W, since the elastic modulus of the core material 2 is set to be larger than the elastic modulus of the lower cladding layer 1 and the elastic modulus of the upper cladding layer 3, even the writing instrument 10 is held. Hand 20 presses the plate-shaped optical waveguide W, As described above, it is also possible to detect only the position of the leading end 10a of the pen tip or the like without detecting the portion of the hand 20.

In addition, when the front end 10a of the writing instrument 10 is passed through the portion of the plate-shaped optical waveguide W pressed by the paper K, the writing end of the writing instrument K is deformed as described above, so that the writing feeling is good.

Further, when the pressing formed by the distal end 10a of the writing instrument 10 (moving the distal end 10a or the input of filling or the like) is released, the lower cladding layer 1, the core material 2, and the upper cladding layer 3 can be borrowed. The respective restoring forces are restored to their original state (see Fig. 3(b)). Further, the sinking depth D of the core material 2 to the lower cladding layer 1 is preferably set to a maximum of 2000 μm. When the sinking depth D exceeds 2000 μm, there is a fear that the lower cladding layer 1, the core material 2, and the upper cladding layer 3 cannot be restored to their original state, or cracks may occur in the plate-shaped optical waveguide W.

As one of the uses of the information management system, for example, the registration of the participants of the sports club can be cited. In other words, when the applicant of the sports club fills in the application paper for the sports club, the location sensor A is placed on the application paper (corresponding to the above-mentioned paper K). Below. In this way, the address of the application paper is filled in, and the address and the like are electronically converted and output to the computer P. Therefore, the staff of the sports club can hand over the completed application paper to the applicant for the confirmation on the spot and become unnecessary to manage the application paper. In addition, when the staff member does not operate the keyboard, the electronic data such as the address can be appropriately sorted and managed by the computer P at the same time as the above-mentioned filling. Thereby, the input work of the staff on the computer P does not exist, and, The keyboard operation error does not exist either. Here, the above-mentioned computer P refers not only to a general computer but also a smart phone, a tablet terminal or the like having the same functions as the computer.

Further, in the above application, the above-mentioned application paper can use the application paper which has been used conventionally. Therefore, the advantages as described above can be easily obtained by making the information management system using the position sensor A described above. Further, in order to detect the information such as the address at the correct position of the position sensor A, it is preferable to provide a mark for positioning the application paper on the surface of the position sensor A.

In addition to the above-mentioned uses, for example, the use of the test scoring work can be cited. In this case, the test results can be electronically data-outputted and output to the computer P, and quickly sorted and counted. Moreover, the security-related use can be cited. In this case, the signature written on the paper K can be electronically outputted to the computer P, and compared with the data stored in the computer P in advance, to quickly The above signature is authenticated.

Here, the elastic modulus and the like of the core material 2, the lower cladding layer 1 and the upper cladding layer 3 will be described in further detail.

The elastic modulus of the core material 2 is preferably in the range of 1 GPa to 10 GPa, and more preferably in the range of 2 GPa to 5 GPa. When the modulus of elasticity of the core material 2 is less than 1 GPa, depending on the shape of the tip end 10a such as the nib, the cross-sectional area of the core material 2 (the core material 2 is not flattened) cannot be maintained under the pressure of the tip end 10a. The doubt that the position of the front end 10a cannot be correctly detected. On the other hand, when the elastic modulus of the core material 2 is higher than 10 GPa, the bending of the core material 2 formed by the pressure of the front end 10a may not be sharply bent along the front end 10a, and It is a situation of gentle bending. Therefore, leakage (scattering) of light from the core material 2 does not occur, and the degree of detection of light on the light receiving element 5 does not decrease, so that the position of the tip end 10a cannot be accurately detected. Further, for example, the size of the core material 2 is set to, for example, a thickness in the range of 5 to 100 μm and a width in the range of 1 to 300 μm.

The elastic modulus of the upper cladding layer 3 is preferably in the range of 0.1 MPa or more and less than 10 GPa, and more preferably in the range of 1 MPa or more and less than 5 GPa. When the elastic modulus of the upper cladding layer 3 is less than 0.1 MPa, it is too soft, and the shape of the tip end 10a of the pen tip or the like is broken under the pressure of the tip end 10a, and the core material 2 cannot be protected. . On the other hand, when the elastic modulus of the upper cladding layer 3 is 10 GPa or more, even if the pressure of the front end 10a or the hand 20 does not become flattened, the core material 2 may be crushed, and the core material 2 may not be correctly The doubt of the position of the front end 10a is detected. Further, the thickness of the upper cladding layer 3 is set, for example, in the range of 1 to 200 μm.

The elastic modulus of the lower cladding layer 1 is preferably in the range of 0.1 MPa to 1 GPa, more preferably in the range of 1 MPa to 100 MPa. When the elastic modulus of the lower cladding layer 1 is less than 0.1 MPa, it is too soft, and after being pressed by the tip end 10a of the pen tip or the like, it does not return to the original state, and thus cannot be continuously performed. On the other hand, when the elastic modulus of the lower cladding layer 1 exceeds 1 GPa, even if the pressure of the front end 10a or the hand 20 does not become flattened, the core material 2 may be crushed, and the front end 10a may not be accurately detected. The doubts about the location. Further, the thickness of the lower cladding layer 1 is set, for example, in the range of 20 to 2000 μm.

Formation of the core material 2, the lower cladding layer 1 and the upper cladding layer 3 The material may, for example, be a photosensitive resin, a thermosetting resin, or the like, and a plate-shaped optical waveguide W may be produced according to a method for forming a material. Further, the refractive index of the core material 2 is set to be larger than the refractive indices of the lower cladding layer 1 and the upper cladding layer 3. Further, the adjustment of the above elastic modulus and refractive index can be performed, for example, by selecting or adjusting the composition ratio of each type of forming material. Further, a rubber sheet may be used as the lower cladding layer 1, and the core material 2 may be formed in a lattice shape on the rubber sheet.

Further, an elastic layer such as a rubber layer may be provided on the back surface of the lower cladding layer 1 (between the lower cladding layer 1 and the rigid board 7). At this time, even if the restoring force of the lower cladding layer 1, the core material 2, and the upper cladding layer 3 is deteriorated, or the lower cladding layer 1 or the like is a layer composed of a material having a poor restoring force, The above-described poor restoring force is assisted by the elastic force of the elastic layer, and the original state can be restored after the pressing of the end 10a of the writing instrument 10 is released.

Further, as described above, in order to form only the position of the distal end 10a such as the pen tip, the hand 20 of the writing instrument 10 such as a pen is not detected, and the core material 2 on the pressing portion formed by the distal end 10a is formed. The amount of light leakage (scattering) caused by the sharp bend is important. Therefore, for example, when the ratio of the radius of curvature R (unit: μm) of the front end 10a of the pen tip or the like to the thickness T (unit: μm) of the core material 2 is used, and the core material 2 and the lower package are specified. When the refractive index difference Δ between the cladding layer 1 and the upper cladding layer 3 is Δmax, the maximum value Δmax of the refractive index difference Δ is expressed by the following formula (1). In other words, when the refractive index difference Δ is larger than the maximum value Δmax, even if the tip end 10a of the pen tip or the like is pressed, the amount of light leakage (scattering) becomes small, resulting in the light receiving element 5 The degree of detection of light is not sufficiently lowered, so it is difficult to distinguish the position of the tip end 10a of the pen tip or the like from the position of the hand 20.

[Number 1] Δmax = 8.0 × 10 ^{-2 -} A × (5.0 × 10 ^-4 ) (1)

On the other hand, the minimum value Δmin of the refractive index difference Δ is expressed by the following formula (2). That is, when the refractive index difference Δ is smaller than this minimum value Δmin, light leakage (scattering) occurs even in the pressed portion formed by the hand 20, and the position of the front end 10a of the nib or the like is made The difference in the position of the hand 20 becomes difficult.

[Number 2] Δmin = 1.1 × 10 ^{-2 -} A × (1.0 × 10 ^-4 ) (2)

Therefore, it is preferable to set the above refractive index difference Δ between the minimum value Δmin and the maximum value Δmax. Here, for example, the curvature radius R (unit: μm) of the distal end 10a is set in the range of 100 to 1000, and the thickness T (unit: μm) of the core material 2 is set in the range of 10 to 100, and When the ratio A is set in the range of 1 to 100, the refractive index difference Δ is in the range of 1.0 × 10 ^-3 to 7.95 × 10 ^-2 . Further, when the ratio A exceeds 100, the minimum value Δmin is set to 1.0 × 10 ^-3 (fixed value).

Furthermore, in the above-described embodiment, the intersection of the lattice-shaped core members 2 is discontinuously discontinuous in all four directions of intersection (see FIG. 3(a)), but it is also possible to do In other forms of discontinuous intersection. For example, as shown in FIG. 6(a), only one of the intersecting directions may be discontinuous with the gap G being broken, and as shown in FIGS. 6(b) and 6(c), two intersecting portions may be used. The direction [in the two directions of opposite directions in Figure 6 (b), adjacent in Figure 6 (c) The two directions] are discontinuous, and as shown in FIG. 6(d), the three intersecting directions may be discontinuous. Further, the discontinuous intersection shown in FIGS. 3(a) and 6(a) to (d) may be provided, and the four intersecting directions may be continuous continuous intersections [refer to FIG. 6 (refer to FIG. 6 Two or more of the e) are crossed in a lattice shape.

Further, in the above embodiment, the information transmission from the position sensor A to the computer P is performed by connecting the cable C, but it may be performed wirelessly. At this time, since the power source necessary for the position sensor A cannot be supplied from the computer P through the connection cable C, a power source such as a battery is set in the position sensor A.

Further, in the above embodiment, the rigid plate 7 is provided to support the plate-shaped optical waveguide W, but the rigid plate 7 may not be provided. At this time, the plate-shaped optical waveguide W of the position sensor A is placed on a rigid flat table such as a table.

Next, the embodiment will be described together with the comparative example. However, the invention is not limited to the embodiments.

Example

[Forming material of the upper cladding layer]

Component A: 30 parts by weight of epoxy resin (Epogosey PT, manufactured by Yokkaichi Synthetic Co., Ltd.).

Component B: Epoxy resin (manufactured by DAICEL Co., Ltd., EHPE 3150) 70 parts by weight.

Component C: 4 parts by weight of a photoacid generator (manufactured by SAN-APRO Co., Ltd., CPI 200K).

Component D: 100 parts by weight of ethyl lactate (manufactured by Wako Pure Chemical Industries, Ltd.).

The materials for forming the upper cladding layer are prepared by mixing the components A to D.

[Forming material of core material]

Component E: Epoxy resin (manufactured by DAICEL Co., Ltd., EHPE 3150) 80 parts by weight.

Component F: 20 parts by weight of an epoxy resin (YDCN700-10, manufactured by Nippon Steel Chemical Co., Ltd.).

Component G: 1 part by weight of a photoacid generator (SP170, manufactured by ADEKA CORPORATION).

Component H: 50 parts by weight of ethyl lactate (manufactured by Wako Pure Chemical Industries, Ltd.).

The material for forming the core material is prepared by mixing the components E to H.

[Forming material of lower cladding layer]

Component I: 75 parts by weight of epoxy resin (Epogosey PT, manufactured by Yokkaichi Synthetic Co., Ltd.).

Component J: Epoxy resin (manufactured by Mitsubishi Chemical Corporation, JER1007) 25 parts by weight.

Component K: 4 parts by weight of a photoacid generator (manufactured by SAN-APRO Co., Ltd., CPI 200K).

Component L: 50 parts by weight of ethyl lactate (manufactured by Wako Pure Chemical Industries, Ltd.).

The material for forming the lower cladding layer is prepared by mixing the components I to L.

[Production of plate-shaped optical waveguide]

On the surface of the glass substrate, the above-mentioned upper cladding layer forming material was used, and a spin coating method was used to form an upper cladding layer. this The upper cladding layer had a thickness of 5 μm, an elastic modulus of 1.2 GPa, and a refractive index of 1.503.

Next, a material for forming the core material is used on the surface of the upper cladding layer, and a grid-shaped core material is formed by photolithography. Each of the lattice-shaped intersecting portions is formed such that all of the four intersecting directions are broken by a gap and become discontinuous discontinuous crossover (see FIG. 3(a)). The width of the above gap is made 10 μm. Further, the thickness of the core material was 30 μm, the width of the core material in the lattice portion was 100 μm, the pitch was 600 μm, the elasticity was 3 GPa, and the refractive index was 1.523.

Next, a lower cladding layer is formed on the surface of the upper cladding layer by a spin coating method using the material for forming the lower cladding layer so as to cover the core material. The thickness of the lower cladding layer (thickness from the surface of the upper cladding layer) was 200 μm, the modulus of elasticity was 3 MPa, and the refractive index was 1.503.

Then, an article having a double-sided tape (thickness: 25 μm) was adhered to one surface of a PET substrate (thickness: 1 mm). Next, the other adhesive surface of the double-sided tape is adhered to the surface of the lower cladding layer, and in this state, the upper cladding layer is peeled off from the glass substrate.

[Comparative example]

[Forming material of the upper cladding layer]

Component M: Epoxy resin (manufactured by Yokkaichi Synthetic Co., Ltd., Epogosey PT) 40 parts by weight.

Component N: Epoxy resin (manufactured by DAICEL Co., Ltd., 2021P) 60 parts by weight.

Component O: 4 parts by weight of a photoacid generator (SP170, manufactured by ADEKA CORPORATION).

The materials of the upper cladding layer are prepared by mixing the components M to O.

[Forming material of core material]

Component P: 30 parts by weight of epoxy resin (Epogosey PT, manufactured by Yokkaichi Synthetic Co., Ltd.).

Component Q: 70 parts by weight of an epoxy resin (EXA-4816, manufactured by DIC Corporation).

Component R: 4 parts by weight of a photoacid generator (SP170, manufactured by ADEKA CORPORATION).

The components of the core material are prepared by mixing the components P to R.

[Forming material of lower cladding layer]

Component S: 40 parts by weight of epoxy resin (Epogosey PT, manufactured by Yokkaichi Synthetic Co., Ltd.).

Component T: 60 parts by weight of an epoxy resin (manufactured by DAICEL Co., Ltd., 2021P).

Component U: 4 parts by weight of a photoacid generator (SP170, manufactured by ADEKA CORPORATION).

The materials of the lower cladding layer are prepared by mixing the components S~U.

[Production of plate-shaped optical waveguide]

In the same manner as in the above embodiment, a plate-shaped optical waveguide of the same size was produced. However, regarding the elastic modulus, the upper cladding layer was 1 GPa, the core material was 25 MPa, and the lower cladding layer was 1 GPa. Further, regarding the refractive index, the upper cladding layer was 1.504, the core material was 1.532, and the lower cladding layer was 1.504.

[Production of position sensor]

A light-emitting element (XH85-S0603-2s, manufactured by Optowell Co., Ltd.) was connected to one end surface of each of the core materials of the plate-shaped optical waveguides of the above-described examples and comparative examples. A light-receiving element (manufactured by Hamamatsu Photonics Co., Ltd., s10226) is connected to the other end surface of the core material, and the light-emitting element, the light-receiving element, and the CPU for controlling the position sensor are mounted. The respective circuits of the embodiment and the comparative example were fabricated.

[Production of Information Management System]

Prepare a computer with a monitor and connect it to the above position sensor using a connecting cable to create an information management system. A software (program) is installed on the computer, and the software (program) is used to convert coordinates of an input area of the position sensor into coordinates of a screen of the display, and can input characters on the position sensor, etc. Displayed on the display.

[Action confirmation of information management system]

The paper is placed on the surface of the upper cladding layer of the plate-shaped optical waveguide of the position sensor, and the input holder holds the ballpoint pen (the radius of curvature of the pen tip is 350 μm) on the hand and fills the text on the paper. .

As a result, in the information management system using the position sensor of the embodiment, only the text filled in the paper is displayed on the display and stored in the memory of the computer. On the other hand, in the information management system using the position sensor of the comparative example, not only the text of the paper but also the part holding the hand of the ballpoint pen is displayed on the display and stored in the memory of the computer. In the body.

From this result, it is understood that the information management system using the position sensor of the embodiment can detect only the information of the writing paper without detecting unnecessary information.

Moreover, even if the intersections of the lattice-shaped core materials are crossed The 1 to 3 directions are discontinuous discontinuous intersections (see Figs. 6(a) to 6(d)), and the same tendency as in the above embodiment can be obtained. Further, even if it is provided with discontinuous intersections in which one to four directions of intersection are discontinuous (see FIG. 3(a), FIGS. 6(a) to (d)), and all four directions of intersection are The result of the same tendency as the above-described embodiment can be obtained by continuously intersecting two or more intersecting lattice patterns in the continuous crossover [see Fig. 6(e)].

In the above embodiments, the specific embodiments of the present invention are shown, but the above embodiments are merely illustrative and not intended to be construed as limiting. Various modifications that are obvious to those skilled in the art to which the invention pertains are also considered to be within the scope of the invention.

Industrial availability

The information management system of the present invention can be applied to electronically materialize information such as characters and manage them by writing information such as characters into the paper.

2‧‧‧ core material

10‧‧‧Notes

10a‧‧‧ front end

A‧‧‧ position sensor

C‧‧‧Connecting cable

D‧‧‧ display

K‧‧‧ paper

P‧‧‧ computer

W‧‧‧ optical waveguide

Claims (1)

An information management system comprising a personal computer having a display and a position sensor (A) described below, wherein the position sensor of the following (A) is used under the paper filled with a note-taking device, the information The management system is characterized in that the position sensor specifies a movement trajectory of the front end of the writing instrument on the surface of the paper to be output to the personal computer and displayed on the display; wherein (A) is provided with a plate-like light a waveguide, a light-emitting element, a light-receiving element, and a position sensor having a movement trajectory-specific mechanism, the plate-shaped optical waveguide having a plurality of linear core materials formed in a lattice shape for supporting the cladding layer under the core material And covering the upper cladding layer of the core material, and the surface of the upper cladding layer is a contact surface with the paper, the light-emitting element is connected to one end surface of the core material, and the light-receiving element is connected to the core material The other end face, the movement trajectory specifying mechanism traverses the movement trajectory of the front end of the writing instrument on the surface of the optical waveguide by the amount of light propagation of the core material that changes according to the movement, And opposed sensors are formed as: a part or all of the lattice-shaped cross section formed by the plurality of pieces of the linear core material, at least one direction is formed to the OFF state crosses the gap discontinuity is crossed, And setting an elastic modulus of the core material to be larger than an elastic modulus of the lower cladding layer and an elastic modulus of the upper cladding layer, and a pressing state formed by a tip end of the writing instrument on the surface of the plate-shaped optical waveguide The deformation rate of the cross section of the core material in the pressing direction is smaller than the deformation rate of the cross section of the upper cladding layer and the lower cladding layer.