KR101512786B1 - Movable Laser Scanner - Google Patents

Abstract

The present invention relates to a movable laser scanner capable of: promptly and accurately obtaining an image by scattering a laser after an ultra-thin scanner is directly inserted into a book or is moved to be close to an object to be scanned; and minimizing damage of the book with convenience of portability and use. The movable laser scanner comprises: a scanner body which is formed in a flat panel type and has a window made of light penetrable materials on one surface thereof; a laser beam irradiator which is installed in one side part of the scanner body to emit laser beams; a scattering means to scatter the laser beams emitted by the laser irradiator to be irradiated onto the surface facing the window; a refracted angle adjusting means which is installed to face the window and adjusts a refracted angle of the laser beams scattered by the scattering means to be emitted through the window; a light receiving unit to receive the laser beams reflected by an object to be scanned; and an image processing unit to analyze an electric signal outputted from the light receiving unit to obtain an image.

Description

[0001] Movable Laser Scanner [0002]

The present invention relates to a scanner, and more particularly, to a scanner capable of scanning a subject such as a book while being small and thin, allowing a user to hold the scanner by hand, Scanner.

Generally, a method of inputting data into a computer includes a method of inputting the created data by performing a word or a CAD operation using a keyboard or a mouse by a person, and a method of inputting characters or pictures of a book or a document There is a method to read and input directly. The latter is faster than the former, and the latter is possible with the scanner.

Among flatbed scanners of various types, a flatbed scanning type scanner in which a scanning object is placed on a glass plate and a scanning head is moved from the lower side of the glass plate is widely used.

However, such a flatbed scanner has no problem in scanning a single document, but there is a problem in scanning a bound book. In other words, when the book is opened and then brought into close contact with the glass plate of the scanner, the bound portion is not fully opened, so that the bound portion is not completely adhered to the glass plate, so that letters or pictures on this portion are often not scanned or scanned.

In order to solve such a problem, Korean Patent Publication No. 2005-0056411 discloses that both sides of a book are scanned at the same time so that both sides thereof can be scanned at the same time, And a scanning head for scanning the book while being moved along the guide rail along the longitudinal direction of the book so that both sides of the book can be accurately scanned.

However, since the above-mentioned conventional book scanner is large in size and fixed type, a page to be scanned by a person is required to be closely adhered to a scanning surface. When a book is large and heavy, a book is spread and adhered to the scanning surface In the process of tightening the book, the bookshelf is often folded or wrinkled. This problem can be further exacerbated especially when a plurality of pages are continuously scanned.

In addition, since the scanning head scans the book while moving horizontally from one end to the other end of the scanner body, there is also a problem that it takes much time for scanning.

In addition, the conventional portable type scanner is bar-shaped, and a person manually scans the scanner while holding the handle of the scanner by moving it along the scanning object. However, there is a problem in that sharp image quality can not be obtained due to the shaking during the scanning process.

1. Korean Patent Publication No. 2005-0056411 (Published Date June 16, 2005): Book Scanner 2. Korean Registered Patent No. 10-0871855 (Registration date November 27, 2008): Book scanner using digital camera 3. Korean Patent Publication No. 1997-0071346 (published on November 07, 1997): Handy Scanner Device

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a laser scanner capable of quickly and accurately obtaining an image by inserting an ultra-thin scanner directly into a book, And a portable laser scanner capable of minimizing the damage of the book.

According to an aspect of the present invention, there is provided a movable type laser scanner including: a scanner body having a flat plate shape having a window made of a light transmitting material; A laser irradiator inserted into one side of the scanner body to emit a laser beam; Spectroscopic means for spectroscopically irradiating the laser beam emitted by the laser beam applicator and irradiating the laser beam toward a surface facing the window; Refraction angle adjusting means provided to face the window and controlling the refraction angle of the laser beam that is spectroscopically measured by the spectroscopic means to emit through the window; A light receiving unit for receiving the laser beam reflected by the object to be scanned; And an image processing unit for analyzing the electrical signal output from the light receiving unit to acquire an image.

According to the present invention, a laser beam is linearly branched by the spectroscopic means in a scanner body of a thin flat plate type, is scanned, refracted by the refraction angle adjusting means, and exits through the window to scan an image.

Therefore, image acquisition for the object to be scanned can be performed quickly and accurately.

In addition, since the scanner is ultra-thin, the user can hold the scanner body by hand and insert it between the bookshelves to scan the book. Therefore, the book can be conveniently and easily scanned without causing problems such as damage to the bookcase during the book scanning process. The scanner can be scanned while the scanner main body is stopped when scanning any other scanned object, thereby minimizing image distortion due to shaking.

1 is a perspective view of a movable laser scanner according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the movable laser scanner of FIG. 1 inserted into a bookcase.
Fig. 3 is a longitudinal sectional view of the movable laser scanner of Fig. 1;
Figure 4 is a cross-sectional view of the mobile laser scanner of Figure 1;
5 is a longitudinal sectional view of a movable laser scanner according to another embodiment of the present invention.
6 is a cross-sectional view of a movable laser scanner according to another embodiment of the present invention.
7 is a cross-sectional view of a movable laser scanner according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

1 to 4 show an embodiment of a movable laser scanner according to the present invention. The movable laser scanner of this embodiment includes a thin plate-like scanner body 10 having a window 11 of a light- A laser irradiator 30 disposed on one side of the scanner body 10 to emit a laser beam and a condenser lens 30 for condensing the laser beam emitted by the laser irradiator 30 to the inside of the window 11 A refraction angle adjusting means for adjusting the refraction angle of the laser beam, which is provided so as to face the window (11) and is spectroscopically measured by the spectroscopic means, to emit through the window (11) And an image processing unit (not shown) for analyzing the electrical signal output from the light receiving unit 60 and acquiring an image.

The scanner body 10 has a rectangular shape with a very thin thickness so that the scanner body 10 can be inserted between bookends of the book B or can be easily moved while the user holds it with his / her hand while facing an object to be scanned. A transparent window 11, such as a glass plate, is provided on one side of the scanner body 10. In order to allow the scanner main body 10 to be inserted into the book as deep as possible while minimizing the spread of the bound portion of the book when the scanner main body 10 is inserted into the book, Can have the form <'and>>.

The laser irradiator 30 is installed on one side of the scanner body 10 to irradiate a laser beam.

The laser beam emitted from the laser irradiator 30 is irradiated by the refraction angle adjusting means provided inside the window 11 after being separated by the spectroscopic means. In this embodiment, the spectroscopic means includes a rotating plate 41 on which the laser irradiator 30 is installed, a motor 41 for rotating the rotating plate 41 about a horizontal axis 41a at a predetermined angle in a vertical direction, A polygon mirror 42 mounted on the other side of the rotary plate 41 for scanning and moving the laser beam irradiated by the laser irradiator 30 into a light beam, And a polygon mirror driving motor 43 for rotating the rotating shaft 42 at a constant speed.

The rotary plate driving part 45 functions to gradually change the scanning position of the laser beam scanned by the polygon mirror 42 from one side of the refraction angle adjusting device to the other side by rotating the rotary plate 41 at a predetermined angle in the vertical direction .

The refraction angle adjusting means refracts the spectroscopic laser beam by the spectroscopic means and emits it through the exit surface of the window (11). In this embodiment, the refraction angle adjusting means is disposed at a predetermined distance from one side of the scanner main body 10 facing the window 11 so that the refraction angle of the laser beam is changed according to the arrangement of the liquid crystal to be reflected toward the window 11 A liquid crystal panel 50, and a controller for adjusting the alignment state of the liquid crystal by adjusting a control signal applied to the liquid crystal panel 50.

The liquid crystal panel 50 includes a plurality of electrodes 51 arranged in a grid on one side of the scanner body 10 and a transparent counter electrode layer 52 spaced apart from the electrodes 51 by a predetermined distance, And a liquid crystal cell 53 disposed between the electrode 51 and the counter electrode layer 52.

The controller controls the voltage applied to the electrodes 51 of the liquid crystal panel 50 to adjust the alignment of the liquid crystal cells 53, thereby controlling the refraction angle of the laser beam.

A plurality of light receiving units 60 are arranged on the surface of the scanner body 10 facing the window 11 with a predetermined distance therebetween and receive light reflected by the object to be scanned after being emitted through the window 11, And outputs an electrical signal according to the received light.

On the other hand, a control box 70 is provided on one side of the scanner body 10. The control box 70 includes a control unit (not shown) for controlling the operation of the laser irradiator 30, the spectroscopic means, the refraction angle adjusting means and the like, and a control unit And receives an electrical signal to process the scanned image. In addition, the control box 70 may include a volatile memory for temporarily storing information acquired by the image processing unit (not shown), a power supply, a button for inputting a scan operation command, A display window 72 for outputting image information, keypad input information, and menu information such as a keypad 71 and a liquid crystal display device (LCD), and a power button. Also, the control box 70 may be provided with a communication interface (not shown) for transmitting information stored in the volatile memory to a portable terminal such as an external computer or a smart phone.

Operation of the movable laser scanner configured as described above will be described below.

The user unfolds the book B and exposes the page to be scanned, and the user holds the scanner body 10 by hand and brings the window 11 into close contact with the page to be scanned. In this state, when a scan command button provided in the control box 70 is pressed, the laser beam is irradiated through the laser irradiator 30.

The laser beam emitted from the laser irradiator 30 is deflected by the polygon mirror 42 rotating at a high speed at a constant speed by the polygon mirror driving motor 43 while being scanned while moving toward the liquid crystal panel 50 toward the isosceles. The rotating plate driving unit 45 scans the laser beam scanned by the polygon mirror 42 toward the liquid crystal panel 50 at regular intervals while rotating the rotating plate 41 at a constant speed.

In this case, the control unit of the refraction angle adjusting unit adjusts the voltage applied to the electrodes 51 of the liquid crystal panel 50 to adjust the refraction angle of the laser beam while adjusting the arrangement of the liquid crystal cells 53.

The laser beam whose refraction angle is adjusted by the liquid crystal cell 53 of the liquid crystal panel 50 is emitted through the window 11 and then reflected by the surface of the bookcase as the object of the scan and is incident on the light receiving unit 60. The light receiving unit 60 outputs an electrical signal according to the incident light and transmits the electrical signal to an image processing unit (not shown), and an image processing unit (not shown) reads the transmitted electrical signal to acquire image data. The image data obtained in the image processing unit (not shown) is stored in the volatile memory and then outputted to the display window 72 of the control box 70. The user confirms the image outputted to the display window 72 and presses the keypad 71 to set and store the file name of the image.

The scanned and stored image may be transmitted to a portable mobile communication terminal such as another computer or a smart phone by wireless communication through a communication interface (not shown) of the control box 70. [

5 shows another embodiment of the movable type laser scanner according to the present invention. In the laser scanner of this embodiment, as the refraction angle adjusting means, a plurality of patterns 151 for refraction are formed instead of the liquid crystal panel 50 of the first embodiment The light guide plate 150 is used.

The pattern 151 of the light guide plate 150 serves to refract the laser beam scanned by the polygon mirror 42 serving as the spectroscopic means toward the window 11 and emit the laser beam. The pattern 151 may have various shapes, but it is preferable to apply a prism pattern of a triangular prism shape that increases in size from one side to the other side as in this embodiment.

6 shows another embodiment of the moving type laser scanner according to the present invention. In the laser scanner of this embodiment, as the spectroscopic means, the laser beam emitted from the laser irradiator 30 is rotated horizontally A reflecting mirror 47 for reflecting the scanned laser beam toward the window 11 while being reflected by the scanning mirror 46 is applied. The scanning mirror 46 reciprocates in a predetermined angle range by the driving motor 46a. The scanning mirror 46, the driving motor 46a and the reflecting mirror 47 are installed on the rotating plate 41 together with the laser irradiator 30. The rotating plate 41 is rotated by the rotating plate driving unit 45 on the horizontal axis 41a So that the scanning position of the laser beam is gradually changed from one side of the refraction angle adjusting means to the other side.

7 shows another embodiment of the moving type laser scanner according to the present invention. The laser scanner of this embodiment includes a rotating plate 41 on which a laser irradiator 30 is installed as a spectroscopic means, And the other part of the laser beam is incident on the rotation plate 41 and is reflected to the refraction angle adjusting unit 45. The rotation plate driving unit 45 rotates the rotating plate 41 at a predetermined angle about the horizontal axis 41a, And a plurality of beam dividers 49 for dividing the light that has passed through each of the beam splitters 48 and emitted to the refraction angle adjusting means.

In the spectroscopic means thus constructed, the laser beam is split by the plurality of beam splitters 48, and then is again diffracted by the beam divider 49 and scanned toward the refraction angle adjusting means.

The rotating plate 41 and the rotary plate driving unit 45 are rotated in the vertical direction about the horizontal axis 41a in the same manner as in the above-described embodiments, while passing through the beam splitter 48 and the beam divider 49, So that the beam can be scanned from one side of the refraction angle adjusting means to the other side.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the appended claims. And it is to be understood that such modified embodiments belong to the scope of protection of the present invention defined by the appended claims.

10: scanner body 11; window
30: laser irradiator 41: spindle
42: polygon mirror 43: polygon mirror drive motor
44: spindle drive unit 46: scanning mirror
47: reflection mirror 48: beam splitter
49: beam divider 50: liquid crystal panel
51: electrode 52: reverse electrode layer
53: liquid crystal cell 60:
70: Control Box B: Book

Claims (7)

A flat plate type scanner body 10 having a window 11 of a light transmitting material on one surface thereof;
A laser irradiator 30 installed at one side of the scanner body 10 to emit a laser beam;
Spectroscopic means for spectroscopically irradiating the laser beam emitted by the laser beam irradiator (30) to a surface facing the window (11);
Refraction angle adjusting means provided to face the window (11) and adjusting the refraction angle of the laser beam that has been spectroscopically measured by the spectroscopic means to emit through the window (11);
A light receiving unit (60) for receiving the laser beam reflected by the object to be scanned;
And an image processing unit for analyzing an electrical signal output from the light receiving unit 60 to acquire an image,
The spectroscopic means includes a rotating plate 41 having the laser irradiator 30 installed on one side thereof, a rotating plate driving unit 45 rotating the rotating plate 41 at a predetermined angle in the vertical direction about the horizontal axis 41a, A polygon mirror 42 which is provided on the other side of the rotary plate 41 and scans the laser beam irradiated by the laser irradiator 30 by moving the laser beam into a soot line and a polygon mirror drive And a motor (43). 2. The apparatus according to claim 1, wherein the refraction angle adjusting means is disposed at a predetermined distance from one side of the scanner body (10) facing the window (11) to adjust the refraction angle of the laser beam according to the arrangement of the liquid crystal, And a controller for adjusting the alignment state of the liquid crystal by adjusting a control signal applied to the liquid crystal panel (50). The optical scanning device according to claim 1, wherein the refraction angle adjusting means comprises a plurality of patterns (151) arranged to be spaced apart from each other on a surface of the scanner body (10) facing the window (11) (150). &Lt; / RTI &gt; 4. The movable laser scanner according to claim 3, wherein the pattern (151) is a triangular prism-shaped prism pattern whose size increases from one side to the other side. delete delete delete

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