JP2582236Y2 - Polarizing medium reader - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application field] The present invention is designed to record and read information.
An information recording unit that, by arranging different polarization member polarization directions
The present invention relates to a polarizing medium reader for reading a medium such as a card having a forgery preventing polarizing section .

[0002]

2. Description of the Related Art Conventionally used magnetic cards are easy to falsify recorded contents and forge the cards, and forgery prevention is strongly required. Also, an optical card,
Some cards, such as IC cards, are difficult to forge, but the cards are very expensive to record and read and their structures are complicated.

[0003]

The problem to be solved is that the magnetic card is easy to falsify the recorded contents and forge the card, and it is easy to use the optical card, IC card, etc. A card which is difficult to forge is that the recording / reading device is very expensive and the structure is complicated. SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, an object of the present invention is to arrange a polarizing member having a different polarization direction on a medium such as a card, and to arrange a polarizing member between a light source and a light receiving portion to provide a card and an apparatus which are difficult to forge. An object of the present invention is to propose a polarization medium reader which can be manufactured at low cost.

[0004]

[Means for solving the problem] In the present invention, information is recorded.
.A medium such as a card having an information recording section to be read and a forgery preventing polarizing section in which polarizing members having different polarizing directions are arranged .
A reader for reading a body , comprising a light source and a light receiving unit .
Provided, arranged polarizing portion of the medium between its, in that a polarizing member for passing only a predetermined polarization direction of the <br/> light of the polarization direction of the polarization member between the light source and the light receiver It is an abstract.

[0005]

When the medium 1 travels and the light of the light source 5 is applied to the polarizing members 3 and 3 'of the medium 1 and passes through the medium, the light is applied to the polarizing member 6. Since the polarization directions are the same, they are transmitted and projected to the light receiving unit 8 to output a signal. When the light from the light source 5 is applied to the polarizing members 4 and 4 ′ of the medium 1 and passes therethrough, and then the light is applied to the polarizing member 6,
Since the polarizing members 4 and 4 'and the polarizing member 6 have different polarization directions, they are opaque and are not projected on the light receiving section 8 and no signal is output. The output and non-output of the signal from the light receiving unit 8 are signals in accordance with the arrangement of the polarizing members 3, 3 'and 4, 4' having different polarization directions arranged on the medium 1 according to specific information.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a first embodiment, FIG. 1 is a perspective view of a polarizing medium reader, FIG. 2 is a view for explaining the principle that light can be transmitted by polarized light, and FIG. 3 is a view for explaining the principle that light cannot be transmitted by polarized light. is there.

In FIG. 1, a medium 1 of a polarizing medium reader is composed of a recording base of a magnetic stripe 2 on a card base made of a synthetic resin such as a transparent vinyl chloride , and wide polarizing members 3 and 4 having different polarization directions. Polarizing members 3 ′ and 4 ′ having different narrow polarization directions have a forgery-preventing polarizing portion fixedly arranged in a barcode shape according to specific information. The polarization members 3, 3 'and 4, 4' having different polarization directions have different polarization directions, for example, 90 degrees. A magnetic head (not shown) is slid on the magnetic stripe 2 to record and read information. The card base of the medium 1 has at least a polarizing member 3,
Only the portions where 3 ′, 4 and 4 ′ are fixed may be transparent. Further, a translucent paint may be applied to at least the back surface of the medium 1 where the polarizing members 3, 3 ', 4 and 4' are fixed.

In FIG. 1, a polarizing medium reader has a light source 5 such as a light emitting element disposed below a medium 1. Above the medium 1, a polarizing member 6 that allows only light in the polarization direction to pass on the optical path of the light source 5 or a polarizing member 7 that allows only light in another polarization direction to pass and a light receiving section 8 including a light receiving element are arranged. Polarizing member 6
The polarization directions of the polarization members 3 and 3 'and the polarization member 6 are the same, and the polarization members 4 and 4' and the polarization member 7 are the same. Further, on the side of the light source 5, another light source 9 and a light receiving section 10 are arranged on the optical path.

In FIG. 2, light is transmitted when the light source 5 passes through the polarizing plates 11 having the same polarization direction. In the principle explanatory diagram of FIG. 3, when the light source 5 passes through the polarizing plates 11 and 12 having different polarization directions, the light source 5 is opaque. This principle is employed in the present invention.

The operation of the polarizing medium reader is as follows. When only the polarizing member 6 is provided above the medium 1 in FIG. 1, the medium 1 travels along a traveling path (not shown) and the light of the light source 9 is transmitted to the polarizing member of the medium 1. 3,
When the light passes through 3 ′, 4 and 4 ′ and is directly projected on the light receiving unit 10, the light passes through the polarizing member. Is output. At this time, if the opaque medium or the opaque paint or ink is applied on the polarizing members 3, 3 ′ and 4, 4 ′, the light from the light source 9 is not projected to the light receiving unit 10. It is detected that it is not a polarizing medium.

When the light from the light source 5 is applied to the polarizing members 3 and 3 'of the medium 1 and passed through the medium 1 after the medium 1 has traveled and the light is applied to the polarizing member 6, the polarizing members 3, 3' and 6 Since the polarization directions are the same, they are transmitted and projected to the light receiving unit 8 to output a signal. The light from the light source 5 is applied to the polarizing member 4 of the medium 1,
When the light is applied to the polarizing member 6 after passing through the light receiving member 4 ', the polarizing members 4, 4' and the polarizing member 6 have different polarization directions. No output. The output and non-output of the signal from the light receiving unit 8 are signals in accordance with the arrangement of the polarizing members 3, 3 'and 4, 4' having different polarization directions arranged on the medium 1 according to specific information.

When only the polarizing member 7 is located above the medium 1 in FIG. 1, the medium 1 travels along a traveling path (not shown) and the light source 5
Is applied to the polarizing members 3 and 3 'of the medium 1 and then passed through the polarizing member 7, the polarizing members 3 and 3' and the polarizing member 7 are opaque because the polarizing directions are different. No light is emitted to the light receiving section 8 and no signal is output. When the light from the light source 5 is applied to the polarizing members 4 and 4 'of the medium 1 and passed therethrough, and then the light is applied to the polarizing member 7, the polarizing members 4, 4' and the polarizing member 7 are transmitted because the polarization directions are the same. The light is projected to the light receiving section 8 to output a signal. The output and non-output of the signal from the light receiving unit 8 are performed according to the specific information in the same manner as described above.
The signals are arranged along the arrangement of the polarizing members 3, 3 'and 4, 4' having different polarization directions arranged above.

The polarization directions of the polarizing members 3, 3 'and 4, 4' and the polarizing members 6, 7 can be appropriately set. If the signal from the light receiving unit 8 is recorded in advance on the magnetic stripe 2 through an arithmetic circuit (not shown), if the two are matched, it becomes impossible to visually discriminate how the polarization directions are different, so that forgery becomes difficult. The magnetic stripe 2 may be omitted, and it may be determined that the medium is a polarization medium only by the detection signal.

FIG. 4 shows a second embodiment, and FIG. 4 shows a polarizing medium reel.
It is a perspective view of a da.

In FIG. 4, the medium 1 is substantially the same as in the first embodiment. In FIG. 4, the polarizing medium reader has light sources 5, 5 'such as light-emitting elements disposed below the medium 1. Above the medium 1, a light-receiving unit 8 including a polarizing member 6 that allows only light in a polarization direction to pass on the optical path of the light source 5 and a light-receiving element is arranged. Further, on the upper side of the medium 1, a polarizing member 7 for passing only light of another polarization direction and a light receiving section 8 'including a light receiving element are arranged on the optical path of the light source 5'. The polarizing directions of the polarizing members 6 and 7 are different, for example, by 90 °. The polarizing members 3, 3 ′ and the polarizing member 6 are in the same direction, and the polarizing members 4, 4 ′ and the polarizing member 7 are in the same direction.

In the second embodiment, the operation of the polarization medium reader is as follows.
When the medium 1 travels along a traveling path (not shown) and the light of the light source 5 is applied to the polarizing members 3 and 3 ′ of the medium 1 and passes therethrough, and the light is applied to the polarizing member 6, the polarizing members 3 and 3 ′ are polarized. Since the polarization direction of the member 6 is the same, the light is transmitted and projected to the light receiving section 8 to output a signal. When the light of the light source 5 is applied to the polarizing members 4 and 4 'of the medium 1 and passed therethrough, and then the light is applied to the polarizing member 6, the polarizing members 4, 4' and the polarizing member 6 have different directions of polarization. As a result, no light is emitted to the light receiving unit 8 and no signal is output.

Next, when the medium 1 is run and the light of the light source 5 'is applied to the polarizing members 3 and 3' of the medium 1 and passed therethrough, and the light is applied to the polarizing member 7, the polarizing members 3 and 3 ' Since the polarizing member 7 has a different polarization direction, it becomes opaque and is not projected on the light receiving portion 8 'to output no signal. The light from the light source 5 ′ is the medium 1
After passing through the polarizing members 4 and 4 '
When the light is applied, the polarizing members 4 and 4 'and the polarizing member 7 have the same polarization direction, so that they are transmitted and projected to the light receiving portion 8' to output a signal.

The outputs and non-outputs of the signals from the light receiving sections 8 and 8 'are made by the polarizing members 3, 3' and 4, 4 'having different polarization directions arranged on the medium 1 in accordance with the specific information as described above. The signal follows the arrangement. The signals from the light receiving sections 8 and 8 'are passed through an arithmetic circuit (not shown) in advance to the magnetic stripe 2
If the two are matched, it is impossible to visually determine how the polarization direction is different if the two are matched. Forgery becomes difficult, and if two detection systems that transmit the polarization member 6 and the polarization member 7 are provided, Double checking is possible.

5 and 6 show a third embodiment. FIG. 5 is a perspective view of a polarization medium reader, and FIG. 6 is a sectional side view of the medium.

In the medium 1 'of the third embodiment, the polarizing members 3, 3' and 4, 4 'are fixed on the surface in the same manner as in the first embodiment.
A continuous polarizing member 3 is fixed to the back surface. In the polarization medium reader, a light source 5 such as a light emitting element is disposed below the medium 1 '. Above the medium 1 ′, a light receiving section 8 composed of a light receiving element is arranged on the optical path of the light source 5. The continuous polarizing member 4 may be fixed to the back surface.

In the third embodiment, the operation of the polarization medium reader is as follows.
The medium 1 'travels along a traveling path (not shown), and the light from the light source 5 is applied to the continuous polarizing member 3 on the back surface of the medium 1' and passes therethrough, and then applied to the polarizing members 3, 3 'and 4, 4' on the front surface. Then, when the light is applied to the polarizing members 3 and 3 ', since the polarization direction is the same, the light is transmitted and projected to the light receiving section 8 to output a signal. When the light from the light source 5 is applied to the continuous polarizing members 3 on the back surface of the medium 1 ′ and passes therethrough and then applied to the polarizing members 4 and 4 ′ on the front surface, the continuous polarizing members 3 and 4 on the back surface are formed.
Since 4 'has a different polarization direction, it is opaque and is not projected on the light receiving section 8 to output no signal.

FIGS. 7 and 8 show a fourth embodiment. FIG. 7 is a side view of a polarization medium reader, and FIG. 8 is a perspective view of the polarization medium reader.

The medium 1 "of the fourth embodiment is made of an opaque or transparent vinyl chloride or other synthetic resin card base.
As in the second embodiment, the magnetic stripe 2, the polarizing members 3 and 4 having a wider width and different polarizing directions, and the polarizing members 3 'and 4' having a narrower polarizing direction are formed in a bar code shape according to specific information. It is fixed side by side. In the polarization medium reader, a light source 5 such as a light emitting element is disposed above the medium 1 "and a light receiving section 8 comprising a polarizing member 6 or 7 and a light receiving element is disposed on an optical path on which light reflected from the medium 1" is projected. ing.

In the fourth embodiment, the operation of the polarization medium reader is as follows.
When the medium 1 "travels along a traveling path (not shown) and the light of the light source 5 is applied to the polarizing members 3 and 3 'of the medium 1" and is reflected and the light is applied to the polarizing member 6, the polarizing members 3 and 3' are used. Since the polarization direction of the polarizing member 6 is the same as that of the polarizing member 6, the light is transmitted and projected to the light receiving section 8 to output a signal. When the light from the light source 5 is applied to the polarizing members 4 and 4 'of the medium 1 "and reflected, and the light is applied to the polarizing member 6, the polarizing members 4, 4' and the polarizing member 6 have different polarization directions, so that they are impermeable. As a result, no light is emitted to the light receiving unit 8 and no signal is output.

When the polarizing member 6 is the polarizing member 7, since the polarizing members 3, 3 'and the polarizing member 7 have different polarization directions, they are opaque and are not projected on the light receiving section 8 to output no signal. When the light is applied to the polarizing members 7 after being reflected by the members 4 and 4 ′, the polarizing members 4 and 4 ′ and the polarizing member 7 are transmitted and transmitted to the light receiving unit 8 because the polarizing directions are the same. A signal is output.

In the above description, the polarization members 3, 3 ', 4, 4' and the polarization members 6, 7 whose polarization directions are respectively fixed have been described. And an electric field may be applied to each. When a liquid crystal material is used as a polarizing member in a medium, power is supplied by providing an electrode in the medium.

[0027]

[Effects of the Invention] As described above, in the present invention , a polarizing section in which polarizing members having different polarization directions are arranged on a medium such as a card is provided.
Only the polarization direction of the polarization member between the light source and the light receiver
Having placed the polarization member which passes only light of Chi predetermined polarization direction, counterfeiting is difficult medium and apparatus can provide a polarizing medium reader exert equal practically superior effect at low cost can be manufactured work.

[Brief description of the drawings]

FIG. 1 is a perspective view of a polarization medium reader.

FIG. 2 is a diagram illustrating the principle of transmitting light by polarized light.

FIG. 3 is a diagram illustrating the principle that light cannot be transmitted by polarized light.

FIG. 4 is a perspective view of a polarization medium reader according to a second embodiment.

FIG. 5 is a perspective view of a polarization medium reader according to a third embodiment.

FIG. 6 is a sectional side view of the medium.

FIG. 7 is a side view of a polarization medium reader according to a fourth embodiment.

FIG. 8 is a perspective view of the polarization medium reader.

[Explanation of symbols]

 1, 1 ', 1 "medium 3, 3', 4, 4 ', 6, 7 Polarizing member 5, 5' Light source 8, 8 'Light receiving section

Claims (1)

(57) [Scope of request for utility model registration] 1. An information recording unit on which information is recorded and read.
When the polarization of the anti-counterfeit by arranging different polarization member polarization directions
A reader for reading media such as a card having an optical unit, light source, and a light receiving portion is provided, the polarization of the medium between its
Part arranged, the light source and the polarizing medium reader disposed polarizing member for passing only light in a predetermined polarization direction in the polarization direction of the polarization member between the light receiving portion.