JPS6190281A - Pattern reference device - Google Patents

Abstract

PURPOSE:To obtain a small and light device by showing the standard pattern by transmissive liquid crystal, and projecting the reference pattern enlarged on the translucent layer of the bottom of the liquid crystal and by referring the both figures. CONSTITUTION:First, drive electrically the liquid crystal 15 and depress an illumination switch 17; then a media illumination device is turned on. A light 20 is reflected by a medium 2 and a reaches a translucent glass layer 22 through a lens system 24. Next, the liquid crystal control part displays the standard pattern sent from the original register file on liquid crystal 15. After confirming that this standard pattern 9 is displayed on liquid crystal 15, an examiner sets a pattern reference device on a reference pattern 8 drawn on the media 2. As the result, the reference pattern 8 is projected on the translucent glass layer 21 as a enlarged real image. The examiner 13 moves the pattern reference device so that the both figure completely overlap and do not produce any visual difference. In this way the examiner 13 can match the two patterns.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to searching for registered standard patterns and matching the standard pattern displayed on a display with a pattern to be matched on the surface of a medium.

(Prior Art) Conventionally, there are mainly three types of pattern matching devices that have a standard pattern in an original file such as a magnetic disk and match this standard pattern with a precise pattern to be matched.

First, as shown in JP-A-56-103775, the pattern to be matched is read under the same conditions as the standard pattern, and the standard pattern and the pattern to be matched are displayed in different colors on a color CRT or the like. There is a device that allows you to see the difference between two patterns by making use of the fact that the color of the overlapping part of the two patterns is a mixture of the two colors. This configuration is shown in FIG. In Figure 1, 1 is the original file in which the standard pattern is stored, 2 is the medium on which the pattern to be matched is provided, 3 is the pattern to be matched reading device that reads the pattern to be matched, and 4 is the display of the two patterns. Color CR
It is T. The medium 2 on which the standard pattern data of the original file 1 and the pattern to be matched are read is read by the pattern to be matched reading device 3, and the data of the pattern to be matched is displayed on the color CRT 4. At this time, the standard pattern is displayed in "red" and the pattern to be matched is displayed in "green".

As a result, on the color CF (T4 screen), the area where the two patterns overlap is displayed in "yellow".The area where the two patterns overlap in this way is displayed as "yellow", the area where there is only the standard pattern is displayed as "red", A portion containing only the pattern to be matched is displayed in green, and pattern matching is performed.

Second, Utility Application No. 57-29320 (Utility Application No. 58-13
3857), the standard pattern is displayed on a display such as a CRT, and this and the pattern to be matched are displayed on a translucent glass. There is also a device that allows you to see the difference between these two patterns by superimposing them with a half mirror. This configuration is shown in FIG. In FIG. 5, 1 is the original file in which the standard pattern is stored, 2 is the medium on which the pattern to be matched is provided, 5 is the display device that displays the standard pattern, 6 is the standard pattern transparent, and the pattern to be matched is 17 is a lens system that images the standard pattern and the pattern to be matched on a semi-transparent glass; 8 is the pattern to be matched on the medium 2; 9 is the standard pattern displayed on the display device 5; IO is the standard pattern; It is a semi-transparent glass on which the pattern 9 and the pattern to be matched 8 are imaged. The contents of the original book file 1 are output to the display device 5 and displayed as a standard pattern 9. This standard pattern 9 is transmitted through the nof mirror 6 and is imaged onto a semi-transparent glass 10 by a lens system 7. Further, the target turn 8 on the medium 2 placed at a distance equal to the optical path length between the screen of the display device 5 and the -7 mirror 6 is as follows:
It is reflected by the half mirror 6 and formed into an image on the semi-transparent glass 10 by the lens system 7. Therefore, the two patterns are displayed superimposed on the semi-transparent glass 10 and can be compared.

Thirdly, there is a device that outputs a standard pattern using a printer and overlaps the printed paper on a medium with a pattern to be verified for verification. This configuration is shown in FIG. In Figure 6, 1 is the standard file (original file in which turns are stored, 2 is the target file).

8 is the pattern to be matched, 9 is the standard pattern printed by the printer, 11 is the printer that prints the standard pattern 9 stored in the original file l, 12 is the pattern printed by the printer 11. Standard pattern 9
13 is a collating person. The contents of the original file l are printed on paper 1 as a standard pattern 9 by the printer 11.
Printed on 2. Then, the person 13 places this paper 12 on the medium 2, and matches the pattern 8 on the medium 2 with the paper 1.
The standard pattern 9 printed on 2 is superimposed and the two patterns are compared.

(Problems to be Solved by the Invention) However, such conventional pattern matching devices have the following problems. The first device requires a color C)t, T and a matching pattern reading device 3, which increases the size of the device and increases the cost. The second device requires a display device such as a CRT, and has the same problems as the first device in that it is large and expensive. Since the third device requires the use of a printer, the device is large and costly, and the verification process is complicated because it requires a step of printing with a printer. Also, since the standard pattern is printed on paper, there is a security problem. Furthermore, it is uneconomical because it requires the use of paper. Furthermore, each of the above-mentioned devices uses the pattern to be matched in its original size, so there is a problem in that precise pattern matching is difficult.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve these problems and provide a pattern matching device that is small, lightweight, portable, and capable of accurate pattern matching with simple matching operations.

(Means for Solving the Problems) The present invention includes a transmissive liquid crystal, a liquid crystal control unit that reads out a standard pattern stored in an original file and displays it on the liquid crystal, and a liquid crystal control unit provided on the bottom of the liquid crystal. a semi-transparent layer,
It is composed of an optical system that magnifies and projects the pattern to be matched on the medium onto the layer, and an illumination system that irradiates the pattern to be matched.

(Operation) The liquid crystal control section reads the standard pattern from the original file and displays it on the liquid crystal. Since the liquid crystal is a transmissive type,
Other than the LCD part that displays the standard pattern,
Light enters from the bottom of the liquid crystal and passes through it. On the other hand, the pattern to be matched illuminated by the illumination system is magnified by the optical system and formed into an image on a semi-transparent layer provided at the bottom of the liquid crystal. When the standard pattern and the pattern to be matched do not match, the pattern to be matched passes through the part of the liquid crystal where the standard pattern is not displayed and is observed by the matcher. Pattern matching can be performed by appropriately moving the medium on which the pattern to be matched is provided.

(Example) Hereinafter, the present invention will be described in detail based on an example with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of the present invention;
Bl is a diagram showing the configuration for displaying the standard pattern on the liquid crystal, and the same figure (C1 is a diagram showing the internal configuration of the pattern matching device. In FIG. 1(A), the pattern to be matched is drawn. The main components of the pattern matching device placed on medium 2 (details will be described later) are as follows in case 1.
It is housed in 6. The upper surface of the case 16 has an opening as shown in the figure, and a transmissive liquid crystal 15 is provided in this opening. Furthermore, a lighting device switch 17 is provided at the upper end of the case 16 to turn on/off the medium lighting device n provided inside the case 16. Further, a data bus 18 extends from near the bottom of the case 16.
As shown in FIG. 1 (tB), it is connected to the original file 1 in which the standard pattern is stored. In FIG. 1(B), 14 is a liquid crystal control section provided inside the case 16;
The standard pattern sent from the original file l via the data bus 18 is stored, inverted, and output to the transmissive liquid crystal 15 provided in the case 16.

Next, the internal structure of the pattern matching device according to this embodiment will be explained using FIG. 1(C). In the same figure (C), a transmissive liquid crystal 15 is provided at the upper part of the case 16 as shown. Particles within liquid crystal 15 are indicated by reference numeral 19. A glass cover for protecting the liquid crystal 15 is closely attached to the upper surface of the liquid crystal 15. Further, a semi-transparent glass layer 21 is closely attached to the bottom surface of the liquid crystal 15. In the lower part of the case 16 there is provided a medium illumination device 22 which is fixed to a suitable support 23 and illuminates the medium 2 . Also, on the support n, a medium illumination device 22 also has light beams.
A lens system 24 is provided that magnifies the pattern 8 to be matched on the medium 2 irradiated with the irradiation light and forms an image on the semi-transparent glass layer 21 .

Here, the principle of the lens system 24 will be explained using FIG. 2. The lens system 24 mainly includes an objective lens 5 having a convex lens structure provided on the medium 2 side, and an imaging lens 26 having a convex lens structure having the same optical axis 29 as this lens and provided on the semitransparent glass layer 21 side. It consists of

The pattern to be matched 8 on the medium 2 is made into a first light source image 27 which is a virtual image by the objective lens 5. In order to create this virtual image, the objective lens 5 should be a convex lens, and the pattern to be matched 8 should be
should be placed inside the focal length of this convex lens. Note that a concave lens may be used as the objective lens 5 instead of a convex lens. The first light source image 27, which is this virtual image, is formed by the imaging lens 2.
6, and is imaged on the semi-transparent glass layer 21 as a second light source image 27 which is a real image. In order to obtain this real image, the first light source image 27 may be positioned outside the focal length of the imaging lens 26. The magnification ratio of the lens system 24 can be adjusted arbitrarily. The enlargement ratio is determined by the resolution of the standard pattern data stored in the original file l and the liquid crystal 1
5 and the resolution of the particles 19. For example, the resolution of standard pattern data is 8 lines/m.
The magnification ratio is set to 873 when the particle 190 resolution is 3 ton)/xi in m.

Next, the operation will be explained. First, the operation of the liquid crystal 15 will be explained using FIGS. 3(A) to (C1).

FIG. 3 (5) to (C) show the state of the particles 19 in the liquid crystal 15 (
FIG. 12 is a diagram showing the state of the liquid crystal 15 (illustrated above each division) as viewed from above by the collation person 13 (illustrated at the bottom of each division). FIG. 3 shows a state in which the liquid crystal 15 is not electrically driven. In this case, the liquid crystal particles 19 are lined up horizontally as shown in the figure, and all of the light rays 20b that enter the translucent glass layer 21 toward the person 13 are reflected by the particles 18. LCD 1
5 appears dark as shown. Figure 3 FB) is the liquid crystal 15
is electrically driven and no standard pattern is displayed on the liquid crystal 15. in this case,
The particles 19 are arranged vertically as shown in the figure, and the light rays 20b entering from the semi-transparent glass layer 21 toward the verifier 13 are reflected by the liquid crystal 1.
Transmits 5. Therefore, the liquid crystal 15 appears bright to the verifier 13 as shown. FIG. 3 (q is the case when a standard pattern is displayed on the liquid crystal 15. Between the parts where the standard pattern is displayed, the particles 19 are lined up horizontally, and therefore they enter from the translucent glass layer 21 toward the verifier 13. The incoming light beam 20b is reflected at this part.On the other hand, in the part 31 where the standard pattern is not displayed, the particles 19 are arranged vertically,
Therefore, the light beam 20b is transmitted through this portion. As a result, only the part where the standard pattern is displayed is dark (visible) to the verifier as shown in the figure. In addition, in FIG. 3, 20a is the light beam sent through the lens system 24. Next , the verification operation will be explained.First, the liquid crystal 15
When the lighting device switch 17 is pressed down (the power source of the liquid crystal 15 may be linked to the lighting device switch), the medium lighting device 2 shown in FIG. 1(C) is activated.
2 is turned on, the light beam 20 is reflected by the medium 2, the reflected light beam passes through the lens system 21, becomes a light beam 20a, and enters the semi-transparent glass layer 21. At this time, if the light beam 20 is irradiated onto the surface of the medium 20 without the pattern 8 to be verified, the verifier 13 sees the liquid crystal 15 in a bright state as shown in FIG. , the liquid crystal control unit 14 shown in FIG. The checker 13 looks at the liquid crystal in the state shown.
After confirming that the pattern is displayed on the medium 2, the pattern matching device side is set on the pattern to be matched 8 drawn on the medium 2. At this time, the light beam 20 from the medium illumination device 22 is reflected by the medium 2, and is expanded by the lens system 24 to become a light beam 20a,
The light enters the semi-transparent glass layer 21. As a result, the pattern to be matched 8 is projected onto the semi-transparent glass layer 21 as an enlarged real image. On the other hand, at this time, since the standard pattern 9 is displayed on the liquid crystal 15 as described above, the real image of the translucent glass layer 21 is transmitted through the liquid crystal 15 in the area where the standard pattern 9 is not displayed, and the verification person observed by 13.

For this reason, for example, as shown in FIG. 1 (5),
3 is the standard pattern 9 and the matched pattern 8 in the liquid crystal 15.
It looks like a mixture of both. Next, the matching person 13 moves the pattern matching device side appropriately so that both patterns are displayed in a superimposed manner without parallax. As a result, the matcher 13 can match the two patterns.

The present invention has been described above based on one embodiment.

Note that the connection between the register file 1 and the liquid crystal control section 14 may be performed via a public telephone line, for example, by providing an acoustic coupler on the pattern matching device side.

(Effects of the Invention) As explained above, according to the present invention, a transmissive liquid crystal is used as a means for displaying a standard pattern, and a pattern to be matched is enlarged on a semi-transparent layer provided at the bottom of the liquid crystal. Since the configuration is such that the pattern matching device is small, lightweight, portable, and capable of precise pattern matching with simple matching work, it is possible to provide a pattern matching device that is small, lightweight, and portable.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention, (A) is a diagram showing the appearance of this embodiment, (B) is a diagram showing a configuration for displaying a standard pattern on a liquid crystal, and [C] is a diagram showing this embodiment. FIG. 2 is a diagram showing the internal structure of the example; FIG. 2 is a diagram for explaining the operating principle of the lens system shown in FIG. 1 (q); FIG.
) are diagrams for explaining the operation of the liquid crystal shown in FIG. 1, and FIGS. 4 to 6 are diagrams each showing the configuration of a conventional pattern matching device. 1... Original file, 2... Medium, 8...
Matched pattern, 9...Standard pattern, 14...
・Liquid crystal control unit, 15...Liquid crystal, 16...Case, 17...Lighting device switch, 18
...Data bus, 19...Particles in liquid crystal, 2
0, 20a, 20b...Light ray, 21...Semi-transparent glass layer, 22...Medium illumination device, B...Glass cover, 24...Lens system, 5...Objective lens, 26...・Imaging lens, 27...first
Light source image, 28... Second light source image, 29... Optical axis, addition... Portion where the standard pattern is displayed, 31.
・The part where the standard pattern is not displayed, 40...
Pattern matching device.

Claims (1)

[Claims] a transmissive liquid crystal, a liquid crystal control unit that reads out a standard pattern stored in an original file and displays it on the liquid crystal, a translucent layer provided on the bottom of the liquid crystal, A pattern matching device comprising: an optical system that magnifies and projects onto a layer; and an illumination system that irradiates the pattern to be matched.