JPH06139398A - 2D code scanner - Google Patents

Abstract

(57) [Abstract] [Purpose] A compact, lightweight, inexpensive structure, and easy and quick reading of a two-dimensional code. [Structure] Reading unit 22 of integrally molded frame 21
Further, an LED light emitting unit 27 for irradiating the two-dimensional code of the print medium with light and an angle conversion mirror 28 for reflecting the reflected light from the two-dimensional code toward the grip portion are provided, and the CCD of the grip portion of the frame 21 is provided. Two-dimensional C with elements arranged in a matrix
The reflected light from the CD 30 and the angle conversion mirror 28 is converted into a two-dimensional CC.
A combination lens 32 that forms an image at the position of D30, a circuit section 29 that analyzes image data obtained from an electric signal from the two-dimensional CCD 30 and outputs two-dimensional code data to the connection cable 23, and an image from the circuit section 29. An LCD 25 that displays image information read by data in real time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable two-dimensional code scanner for reading information of a two-dimensional code such as a multistage bar code or a matrix code printed on a print medium.

[0002]

2. Description of the Related Art Generally, for example, POS (point of sale)
s) In the system etc., when registering product information,
A label printed with a barcode that encodes product information as shown in FIG. 9A is attached to a product, and the barcode on the label is read by a barcode scanner at the time of sale, etc. Was being registered.

An example of a bar code scanner is shown in FIG.
0 (a) touch bar code scanner 1, FIG.
Gun-type bar code scanner 2 shown in FIG.
The fixed bar code scanner 3 and the like shown in (c) are known.

The touch-type bar code scanner 1 is used by holding the device in hand and is formed at the tip of the device.
t emitting diode) A plurality of Cs arranged in a line with a light emitting unit
The reading unit 1a composed of a CD (charge coupled device) element is brought into close contact with the bar code printed on the label, and the code reading switch 1b is turned on to operate the LE.
The LED of the D light emitting section is caused to emit light, and the reflected light from the barcode is received by each CCD element to read the barcode. When the reading of the bar code is completed normally, the reading completion lamp 1c, which is an LED provided on the upper surface of the device, is turned on.

Further, the gun type bar code scanner 2 is used by holding the device with a hand, and a reading part 2a composed of a laser emitting part and a CCD element is formed on the upper front part of the device.
When the code reading switch 2b is turned on, the bar code printed on the label is scanned by the laser beam from the reading section 2a, and the reflected light is received by the CCD element to read the bar code.

Further, the fixed bar code scanner 3 is
The device is used by being fixedly installed at a predetermined position, and a reading section 3a including a laser emitting section and a CCD element is formed on the front surface of the apparatus. The laser beam is emitted from the reading section 3a at the timing when the product passes through the front surface of the apparatus. Scans the bar code printed on the label and receives the reflected light by the CCD element to read the bar code.

Each of the bar code scanners described above is connected to a host computer that processes product information with a connection cable, and outputs the read bar code information to the host computer through the connection cable.
In the host computer, product information is registered based on the input bar code information.

[0008] As described above, the field of performing registration processing of product information and information management by using a bar code or the like in which predetermined information is coded is expanded to FA (factory autometion), distribution, service industry and the like. Therefore, there is a wide variety of types of information to be handled, and a large amount of information tends to be required.

Therefore, since the information density of the one-stage bar code is low as the amount of information increases, the amount of information that can be coded becomes insufficient. Therefore, in order to increase the information density and cope with the increase in the information amount, the multi-stage bar code shown in FIG. 9B and the two-dimensional code shown in FIG. 9C have been developed.

A TV (television) camera type two-dimensional code scanner as shown in, for example, FIG. 11 is conventionally known as a device for reading such a multi-stage bar code or two-dimensional code. The TV camera type two-dimensional code scanner is connected to the TV camera 11, a connection cable to the TV camera 11, and a host computer for processing information via a line (RS-232C line). It is composed of an image processing device 12 and a TV monitor 13 connected to the image processing device 12 with a connection cable.

In such a TV camera type two-dimensional code scanner, the TV camera 11 is set so as to face the surface of the label 14 affixed to the article on which the two-dimensional code is printed, and under normal room illumination. The TV camera 11 photographs the two-dimensional code on the label 14, and the image data obtained by the photographing is processed by the image processing device 12 to be converted into two-dimensional code information. This two-dimensional code information is transmitted to the host computer via the line. On the other hand, the captured image data is directly output to the TV monitor 13 via the connection cable, and the captured image is displayed on the TV monitor 13.

[0012]

As described above, the above-mentioned TV camera type two-dimensional code scanner is known as an apparatus for reading a two-dimensional code, but the TV camera 11, the image processing apparatus 12 and the TV are known. The device of the monitor 13 is required, and there is a problem that the entire device is large in weight and shape and is expensive.

Further, the label 1 is opposed to the TV camera 11.
4 must be set perpendicularly to the optical path, and the focus of the TV camera 11 must be adjusted according to the distance between the TV camera 11 and the label 14, and the TV camera 11 must be adjusted according to the brightness of the indoor lighting. There is a problem that it takes time to perform the setup before reading the two-dimensional code, such as adjusting the diaphragm.

Therefore, it is an object of the present invention to provide a two-dimensional code scanner which is compact, lightweight, inexpensive and can read a two-dimensional code easily and in a short time.

[0015]

SUMMARY OF THE INVENTION The present invention comprises a reading section and a grip section provided on a portable frame integrally molded, and the reading section is close to or close to the reading section. A light emitting unit that irradiates the two-dimensional code printed on the printed printing medium with light, and a light emitted from the light emitting unit.
A reflected light angle conversion means for refracting or reflecting the reflected light from the dimensional code to the grip is provided, and the grip receives the reflected light from the two-dimensional code and outputs an electric signal according to the amount of the reflected light. 2D reading means having a structure in which the solid-state image pickup elements are arranged two-dimensionally, and 2D reading means from the 2D code on the print medium close to or close to the reading portion via reflected light angle conversion means. The optical system mechanism section composed of a lens or the like that forms an image of the reflected light incident on the two-dimensional reading means at the position of the solid-state image sensor of the two-dimensional reading means, and the electric signal output from the two-dimensional reading means is input to obtain image information. An image information converting unit for converting, a reading range display unit for displaying a reading range read by the two-dimensional reading unit in real time by reflected light from the print medium or image information from the image information converting unit, and an image. Code information analysis means for analyzing code information of a two-dimensional code from image information from the information conversion means, and code information output means for outputting the code information obtained by the analysis of the code information analysis means to an external device are provided. Is.

[0016]

In the present invention having such a structure, when the reading section of the apparatus is brought into close contact with or close to the two-dimensional code printed on the print medium, the light from the light emitting section is applied to the two-dimensional code. It The reflected light from this two-dimensional code is
The reflected light angle conversion means refracts or reflects the grip,
An image is formed at the positions of a plurality of solid-state image pickup devices that constitute the two-dimensional reading means by the optical system mechanism section.

Each solid-state image pickup device of the two-dimensional reading means outputs an electric signal corresponding to the amount of the reflected light imaged by the optical system mechanism section, and the image information converting means converts the electric signal into image information. To do.

From the reflected light from the print medium or the signal output from each solid-state image pickup device of the two-dimensional reading means, the reading target range display means displays the reading target range read by the two-dimensional reading means in real time. . Therefore, the operator of the apparatus can move the apparatus in a short time so that the two-dimensional code is accurately positioned at the regular reading position while monitoring the displayed reading target range.

Therefore, the two-dimensional code is accurately positioned at the regular reading position and is read by the two-dimensional reading means. Here, the code information analysis unit analyzes the code information from the image information converted by the image information conversion unit, and the analyzed code information is output to the external device by the code information output unit.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, the present invention is applied to a two-dimensional handy scanner, FIG. 1 is a perspective view of this two-dimensional handy scanner, and FIG. 2 is a sectional view of this two-dimensional handy scanner.

Reference numeral 21 denotes a frame integrally formed in a hollow structure with plastic or the like, one end having an opening having a small opening area, and the other end serving as a reading unit 22 having an opening having a large opening area. There is. A connection cable 23 including a power line and a signal line is inserted into a small opening at one end of the frame 21, and is fixed to the frame 21 by a protective member 24. An opening is also formed in the upper portion of the frame 21, and an LCD (liquid c
A crystal display) 25 is provided, and a code reading switch 26 for performing an operation to start reading a two-dimensional code is provided on a side surface of the frame 21.

A portion of one end of the frame 21 on the side where the small opening is formed is a grip portion, and when the reading portion 22 is brought close to or in close contact with a print medium on which a two-dimensional code is printed, the grip portion The central axis is larger than at least 90 ° with respect to the vertical line of the printing surface of the two-dimensional code, and is about 110.
It is formed so as to be about °.

Inside the reading section 22, which is a large opening at the other end of the frame 21, LEDs and L
An LED light emitting portion 27 as a light emitting portion including a plastic diffusion lens that uniformly diffuses light from the ED,
A plurality of circles or regular polygons close to a circle are arranged. Further, further inside the reading unit 22, an angle conversion mirror 28 as a reflected light angle conversion unit is installed at a predetermined angle with respect to the direction of the reading unit 22. Although the angle conversion mirror 28 is used here, a prism or the like may be used instead.

In addition, inside the grip portion side where a small opening is formed at one end of the frame 21, a circuit portion 29 electrically connected to the connection cable 23 and a two-dimensional CCD as a two-dimensional reading means. (Charge coupled device)
30 are installed.

The circuit portion 29 is a CPU constituting a power supply interface circuit, an LCD / buzzer control portion for controlling the LCD 25 and a buzzer described later, and a control portion main body.
(Cen-tral processing unit) and a main control unit including various memories, a decoding unit, a code image processing circuit, an imaging signal processing circuit, and the like. This circuit part 29
Each of the circuits has a multi-layer substrate structure, and is formed by mounting chip components forming each circuit on one side or both sides of each substrate.

The circuit section 29 and the two-dimensional CCD 30 are electrically connected to each other, and the two-dimensional CCD 3
0 is a matrix of CCD elements corresponding to the angle conversion mirror 28 (the number of effective pixels is 250,000 pixels, and the density is 2
In order to correspond to the dimension code, the pixels are arranged with an effective pixel number of 400,000 or more). Here, CC
Although the D element is used, other types of solid-state image pickup elements may be used instead.

The two-dimensional CCD 30 and the angle conversion mirror 2
8, a diaphragm mechanism 31 for adjusting the amount of transmitted light, a combination lens 32, and a filter 33 for reducing unnecessary extraneous light are sequentially arranged. The focal point of the combination lens 32 is 2 when the print medium such as a label on which the two-dimensional code is printed approaches the reading unit 22 within 10 mm.
The contrast is adjusted so that the dimension code can be binarized.

Although the combination lens 32 is used here, this is to minimize the distortion occurring in the received image, and an aspherical lens capable of minimizing the distortion may be used instead. In addition, the combination lens 3
In item 2, if the occurrence of a ghost due to reflection on the lens surface poses a problem, the lens surface may be treated with an antireflection coating or the like.

The diaphragm mechanism 31, the combination lens 32
The filter 33 constitutes an optical system mechanism section.

The circuit section 29 is electrically connected to the code reading switch 26 and also to a buzzer 34 provided inside the frame 21.

FIG. 3 is a block diagram showing a circuit configuration of a main part of the circuit unit 29 of the two-dimensional handy scanner.
An EEPROM in which program data and initial settings for processing performed by the CPU 41 constituting the main control unit are stored.
(Electrically erasable programmable read only mem
ory) 42, a DRAM (dynamic memory) in which areas of various memories used when the CPU 41 performs processing are formed.
andom access mem-ory) 43, a mask ROM (read only memor) in which a read format is stored corresponding to each type of attached two-dimensional symbol (two-dimensional code)
y) 44, a decoding circuit (decoding GA (gate array)) for converting the read image data into code data based on the read format from the mask ROM 44
A serial I / F (interface) 45, which is connected to an external information processing device such as a host computer 45 via a serial line, is connected to the CPU 41 via a system bus 47.

The code image processing circuit 48 and the two-dimensional CCD 30 are controlled, and the two-dimensional CCD 3 is controlled.
The image pickup signal processing circuit 49 that amplifies the signal from 0, the light source driver 50 that drives the LED 27a that constitutes the LED light emitting section 27 to light up, and the LCD 25 normally reads an image based on the image data from the code image processing circuit 48. Display unit drive circuit 5 for displaying the range and displaying an error or reading completion under the control of the CPU 41.
1. I / O which inputs an output signal from the code reading switch 26 and outputs a drive signal to the buzzer 34
(Input / output) ports 52 are connected to the CPU 41 via the system bus 47, respectively. The LCD 25 and the display unit drive circuit 51 constitute a reading target range display means.

Therefore, regarding the circuit section 29, the L
The CD / buzzer control unit uses the display unit drive circuit 51 and I
/ O port 52, the main control unit is the C
It comprises a PU 41, an EEPROM 42, a DRAM 43 and a serial I / F 46, and the decoding section comprises the mask ROM 44 and a decoding circuit 45.

Further, the image pickup signal processing circuit 49 and the code image processing circuit 48 constitute image information converting means, the mask ROM 44 and the decoding circuit 45 constitute code information analyzing means, and the serial I / F 46.
The code information output means is constituted by.

The code image processing circuit 48 is shown in FIG.
As shown in (a), an A / D (an which converts the image pickup signal (each pixel signal) from the image pickup signal processing circuit 49 into a digital signal
alogue / digital) conversion circuit 48a, a frame memory 48b in which digital data from the A / D conversion circuit 48a is binarized by a preset threshold value, and image data is mapped by the binarized data.
And the image data mapped on the frame memory 48b are subjected to density correction, emphasis processing, smoothing processing, and the like, and then the image data of only the two-dimensional code is cut out and the cut out image data Is composed of an image processing circuit 48c which performs processing such as rotation, feature extraction and the like to convert it into regular two-dimensional code image data. Then, the A / D conversion circuit 48a and the frame memory 4
8b and the image processing circuit 48c are connected to the system bus 47, respectively.

The image pickup signal processing circuit 49 is similar to that shown in FIG.
As shown in (b), a signal processing circuit 49a which is connected to the system bus 47 and which receives and amplifies the output signal from the two-dimensional CCD 30, the two-dimensional CCD
A ROM (read only mem-or) in which information on the variation (defect) of each CCD element generated during manufacturing in 30 is stored.
y) 49b, a defect correction circuit 49c that corrects the read timing in each CCD element based on the information stored in this ROM 49b, and a shutter that sets the read time when the print medium on which the two-dimensional code is printed is a moving body. Control circuit 49d, defect correction circuit 49c, and shutter
A timing generation circuit 49e that generates a read timing based on a signal from the control circuit 49d, and a read timing generated by the timing generation circuit 49e.
In the two-dimensional CCD 30, a vertical driver 49f and a horizontal driver 4 for designating CCD elements to be read, respectively.
9 g, the signal processing circuit 49 from the two-dimensional CCD 30
It is composed of a synchronization signal circuit 49h for controlling the timing of outputting the image signal to a.

FIG. 5 shows a flow chart of the reading process performed by the CPU 41.

First, the code reading switch 26 is in a standby state until it is turned on, and the code reading switch 26 is turned on.
Is turned on, the LED 27a of the LED light emitting unit 27
Energize and turn on.

Next, as the processing of step 1 (ST1),
The two-dimensional CCD 30 is controlled by the image pickup signal processing circuit 49 to start the reading operation. The coded image processing circuit 48 binarizes the image pickup signal read and amplified by the two-dimensional CCD 30, and transfers it to the frame memory 48b.
Performs image data mapping. Image data of only the two-dimensional code is cut out from the mapped image data, various code image processing is performed on the cut-out image data of only the two-dimensional code, and converted into regular two-dimensional code image data to be DRAM43. To memorize.

The regular two-dimensional code image data stored in the DRAM 43 is transferred to the decoding circuit 45, and a decoding process for converting the two-dimensional code image data into two-dimensional code data is performed.

Here, the decoding process ends normally (OK).
Judge whether or not. If the decoding process cannot be completed normally, that is, if it cannot be converted into the two-dimensional code data, a display indicating a reading error is displayed on the LCD 25, and the process returns to the above-mentioned step 1 again.

When the decoding process is completed normally, the energization of the LED 27a is stopped and the LED 27a is turned off, and the display indicating the completion of reading is displayed on the LCD 25 or the buzzer 34 is sounded. Next, the two-dimensional code data obtained by the decoding process is transmitted by the serial I / F 46 to the information processing device such as the host computer via the connection cable 23.

Connection cable 2 by serial I / F 46
When the transmission of the two-dimensional code data is completed via 3, the process returns to the first process of this reading process again.

In the present embodiment having such a structure, for example, a label attached to an article is printed as shown in FIG.
The case of reading the Carla code shown in (c) will be described.

First, when the reading section 22 of the two-dimensional code scanner is brought close to the Karla code of the label and the code reading switch 26 is turned on, the LED light emitting section 27 is turned on. The light from the LED light emitting portion 27 is applied to the carla code on the label, and the reflected light from the carla code is reflected by the angle conversion mirror 28 toward the two-dimensional CCD 30. External light is reduced by the filter 33, and the reflected light is imaged at the position of the two-dimensional CCD 30 via the diaphragm mechanism 31 by the combination lens 32.

Here, the reflected light formed into an image is the two-dimensional CCD.
Each of the 30 CCD elements converts it into an electric signal of a voltage level corresponding to the amount of received light. The electric signal is amplified by the image pickup signal processing circuit 49 at a predetermined timing and transferred to the code image processing circuit 48 as an image pickup signal.

The code image processing circuit 48 converts the image pickup signal into image data. At this time, the display drive circuit 51
Causes the LCD 25 to display the read image information based on the image data. On the other hand, the code image processing circuit 48 further cuts out the image data of only the carla code portion from the converted image data, and performs various code processing on the cut-out image data of only the carla code portion to perform normal two-dimensional processing. Convert to code image data.

This regular two-dimensional code image data is DR
Based on the format of the Carla code stored in the AM 43 and stored in the mask ROM 44, it is decoded by the decoding circuit 45 and output as Carra code data to the host computer or the like via the connection cable 23.

For example, when the two-dimensional code scanner is brought close to the Carla code on the label and the Carla code is positioned at the regular reading position, FIG.
As shown in, the operator can confirm that the Carla code is positioned at the proper reading position because it is displayed in the center of the LCD 25, and if the code reading switch 26 is immediately turned on, the Carla code is accurately displayed. Can be read.

When the Carla code is out of the normal reading position, the LCD is displayed as shown in FIG. 6 (b).
Since it is displayed off the display screen of 25, the operator can notice that the Carla code is out of the normal reading position, and while monitoring the LCD 25, this two-dimensional code scanner can be displayed in FIG. If the image is moved so as to obtain the image shown in (), the Carla code can be easily positioned at the regular reading position in a short time. And L
When the Carla code is displayed in the center of the CD 25, by turning on the code reading switch 26, the Carla code can be accurately read.

Also, when the Carla code is positioned at the regular reading position, but is tilted (rotated) to be positioned, as shown in FIG. 6C, the LCD 2 is displayed.
Since the Carla code tilted to the center is displayed on 5,
The operator can notice that the Carla code is tilted and positioned, and if the two-dimensional code scanner is moved so that the image shown in FIG. The code can be easily positioned in the normal reading position without tilting (without rotating). When the Carla code is displayed in the center of the LCD 25 without tilting, the code reading switch 2
If 6 is turned on, the Carla code can be read accurately.

As described above, according to this embodiment, the reading section 22 of the integrally molded frame 21 includes the LED light emitting section 27 for irradiating the printing medium on which the two-dimensional code is printed and the two-dimensional code. The angle conversion mirror 28 for reflecting the reflected light of the direction of the grip is provided.
A two-dimensional CCD 30 configured by arranging CD elements in a matrix, a filter 33, a combination lens 32 for forming an image of reflected light from the angle conversion mirror 28 at the position of the two-dimensional CCD 30, an aperture mechanism 31, and 2. Image data is created by the electric signal output from the three-dimensional CCD 30, and the image data is analyzed to generate the two-dimensional code data by the connecting cable 2.
By providing the circuit unit 29 for outputting to 3 and the LCD 25 for displaying the image information read by the image information from the code image processing circuit 48 in real time, it is possible to configure the device as a device for reading a two-dimensional code in a small, lightweight and inexpensive manner. Further, since the reading unit 22 of the present apparatus is read close to the print medium on which the two-dimensional code is printed, there is no need to adjust the focus or adjust the aperture by changing the illumination for irradiating the print medium with light. Since the reading operation is automatically performed only by turning on the code reading switch 26, the two-dimensional code can be easily read in a short time.

Further, since the image information to be read in real time is displayed on the LCD 25, when the two-dimensional code scanner is brought close to the print medium on which the two-dimensional code is printed, the image read by the two-dimensional CCD 30 is displayed in real time. Since it can be confirmed by the LCD 25, the two-dimensional code can be easily positioned at the regular reading position without tilting. Therefore, the two-dimensional code can be read accurately.

Another embodiment of the present invention will be described with reference to FIGS. 7 and 8. The above-described embodiment is based on the display unit drive circuit 5.
1 and the LCD 25 are provided to display the image to be read based on the image information obtained from the two-dimensional CCD 30. In this embodiment, as shown in FIG. The conversion mirror 28 is replaced with an angle conversion half mirror 61, an opening is formed in a portion where the light transmitted by the angle conversion half mirror 61 is irradiated to the frame 21, and transparent glass or transparent plastic is fitted into this opening. The window portion 62 formed by the above is provided. Therefore, as shown in FIG. 8, the display drive circuit 51 and L
It is not necessary to provide the CD25. The other components and the circuit configuration are the same as those in the above-described embodiment, and the description thereof will be omitted here.

In this embodiment having such a structure, when the two-dimensional code is not positioned at the regular reading position when the two-dimensional code scanner is brought close to the two-dimensional code printed on the print medium, for example, 2 in the center of the window 62
Since the two-dimensional code is not displayed, the operator can notice that the two-dimensional code is not positioned at the regular reading position, and while monitoring the window 62, the two-dimensional code can be easily placed at the regular reading position. It can be positioned in a short time. When the two-dimensional code is displayed in the center of the window portion 62, the two-dimensional code can be accurately read by turning on the code reading switch 26.

Even when the two-dimensional code is positioned at the regular reading position, but the two-dimensional code is tilted (rotated) and positioned, the tilted two-dimensional code is displayed on the window 62. Therefore, the operator can notice that the two-dimensional code is tilted and positioned, and if the two-dimensional code scanner is moved while observing the window 62,
The dimension code can be easily positioned at the regular reading position without tilting.

When the code reading switch 26 is turned on when the two-dimensional code is displayed in the center of the window portion 62 without tilting, the two-dimensional code can be accurately read.

As described above, also in this embodiment, the same effect as that of the above-described embodiment can be obtained. Further, in the present embodiment, since it is not related to the circuit or the like at all, it is possible to obtain an effect that the circuit and the like are affected or not affected by the simple structure at a low cost.

[0059]

As described above in detail, according to the present invention,
It is possible to provide a two-dimensional code scanner that is compact and lightweight, can be inexpensively constructed, and can read a two-dimensional code easily and in a short time.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing the same embodiment.

FIG. 3 is a block diagram showing a circuit configuration of a main part of the embodiment.

4 is a block diagram showing a circuit configuration of a code image processing circuit and an image pickup signal processing circuit of FIG. 3 of the embodiment.

FIG. 5 is a diagram showing the flow of a reading process of the embodiment.

FIG. 6 is a diagram showing an example of displaying a two-dimensional code read by the LCD of the same embodiment.

FIG. 7 is a cross-sectional view showing another embodiment.

FIG. 8 is a block diagram showing a circuit configuration of essential parts of the embodiment.

FIG. 9 is a diagram showing examples of various codes.

FIG. 10 is a perspective view showing an example of various conventional bar code scanners.

FIG. 11 is a perspective view showing an example of a conventional two-dimensional code scanner.

[Explanation of symbols]

25 ... LCD, 27 ... LED light emitting part, 30 ... two-dimensional CC
D, 41 ... CPU, 51 ... Display section drive circuit, 61 ... Angle conversion half mirror, 62 ... Window section.

Claims (1)

[Claims] 1. A reading unit and a grip unit provided on an integrally molded portable frame, wherein the reading unit is printed on a print medium that is in close contact with or close to the reading unit. The grip is provided with a light emitting part for irradiating the two-dimensional code with light and a reflected light angle converting means for refracting or reflecting the reflected light from the two-dimensional code irradiated with the light from the light emitting part to the grip part. The unit receives a reflected light from the two-dimensional code and outputs a electric signal according to the amount of the reflected light, and a two-dimensional reading unit having a two-dimensional array of solid-state imaging devices, and the reading unit. Reflected light incident on the two-dimensional reading means via the reflected light angle conversion means from a two-dimensional code on the print medium that is close to or close to the area at the position of the solid-state image sensor of the two-dimensional reading means. From a lens that forms an image The optical system mechanism portion configured, the image information conversion means for converting the electric signal output from the two-dimensional reading means into image information, and the reflected light from the print medium or the image information conversion means. Based on the image information, the reading target range display means for displaying the reading target range read by the two-dimensional reading means in real time, and the code information analysis for analyzing the code information of the two-dimensional code from the image information from the image information converting means. A two-dimensional code scanner comprising means and code information output means for outputting code information obtained by the analysis of the code information analysis means to an external device.