JP2020181428A - Optical information reading device - Google Patents

Abstract

To provide an optical information reading device that can read both a one-dimensional code and a two-dimensional code and allows a reading port to easily turn to each of the one-dimensional code and two-dimensional code.SOLUTION: A reading part 12 is attached to a holding part 13 in such a way as to extend obliquely downward from one lengthwise directional end of the holding part 13, and a reading port 50 is positioned on an extended end part 12a of the reading part. An opening region of the reading port 50 is provided with a first opening region S1 elongated in one direction, which is used to read a one-dimensional code, and a second opening region S2 used to read a two-dimensional code. A guide part 60 for indicating a reading range D for two-dimensional codes which corresponds to the second opening region S2 is provided on that side surface 12b of an outer surface of the extended end part 12a which is apart from the holding part 13.SELECTED DRAWING: Figure 7

Description

The present invention relates to an optical information reader that optically reads an information code.

Conventionally, in cash registers of retail stores and convenience stores, bar code scanners using a line sensor as a light receiving means are often used in order to read one-dimensional codes such as bar codes displayed on products and the like. The barcode scanner is provided with a reading port long in one direction to facilitate reading of the barcode. Therefore, the barcode can be read by bringing the reading port into contact with or close to the barcode so that the longitudinal direction of the reading port is aligned with the longitudinal direction of the barcode.

In recent years, two-dimensional codes such as QR codes (registered trademarks) have become widespread, and the introduction of code scanners that can read two-dimensional codes using area sensors as a light receiving means is increasing even at cash registers of retail stores and convenience stores. It is expected that. Then, it is necessary to read the one-dimensional code or the two-dimensional code with one optical information reading device, and as an optical information reading device capable of optically reading both the one-dimensional code and the two-dimensional code, for example, the following An optical information reading device disclosed in Patent Document 1 is known.

In this optical information reading device, the opening region of the reading port that takes in the reflected light from the information code has a first opening region having an upper edge as a long side and a lower edge shorter than the upper edge as one side. It is formed so as to have a substantially T shape by the second opening region. As a result, when reading the one-dimensional code, the first opening area is directed to the one-dimensional code, and when reading the two-dimensional code, it is formed by a part of the first opening area and the second opening area. Both the one-dimensional code and the two-dimensional code can be read by directing the square opening region to be formed toward the two-dimensional code.

Japanese Unexamined Patent Publication No. 2016-110611 Japanese Unexamined Patent Publication No. 08-227437

By the way, at the cash register of a retail store or a convenience store, high-speed operation is required, so that the user needs to point the reading port at the two-dimensional code as easily as the one-dimensional code. However, in the optical information reading device disclosed in Patent Document 1, although the reading port can be easily directed to the one-dimensional code, the long side side of the opening is present on the back side when viewed from the user. Therefore, if the two-dimensional code is hidden by the housing, there is a problem that it is not possible to easily determine which part of the reading port should be directed to the two-dimensional code. For example, a structure that employs a half mirror adopted in the barcode reader disclosed in Patent Document 2 can be considered, but since it is necessary to adjust the position of the reading port while looking through the half mirror, high-speed operation is performed. It is difficult to immediately turn the reading port to the correct position.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is that both a one-dimensional code and a two-dimensional code can be read, and the one-dimensional code and the two-dimensional code can be read. An object of the present invention is to provide an optical information reading device capable of easily pointing a reading port to each of them.

In order to achieve the above object, the invention according to claim 1 of the claims
An imaging unit (28, 27) that captures information codes of both one-dimensional code and two-dimensional code, and
A housing (11) in which the imaging unit is housed and provided with a reading port (50) for introducing light from the information code into the housing.
With
An optical information reading device (10) that captures and reads the information code in the imaging unit via the reading port.
The housing is
The reading unit (12) on which the reading port is formed and
A grip portion (13) that is gripped when the reading port is directed toward the information code,
With
When the longitudinal direction of the grip portion is horizontal, the reading portion extends diagonally downward from the end portion on one side in the longitudinal direction of the grip portion, and the reading port is located at the extending end portion (12a). Connected to the grip so as
A guide portion (60, 60a to 60e) for indicating a reading range (D) for a two-dimensional code is provided on one side surface (12b) of the outer surface of the extending end portion away from the grip portion. It is a feature.
The reference numerals in the parentheses indicate the correspondence with the specific means described in the embodiments described later.

In the invention of claim 1, the reading portion is connected to the grip portion so as to extend diagonally downward from the end portion on one side in the longitudinal direction of the grip portion and the reading port is located at the extending end portion. A guide portion for indicating the reading range for the two-dimensional code is provided on one side surface of the outer surface of the extending end portion away from the grip portion.

As a result, the user holding the grip portion directs the reading port toward the two-dimensional code so that the reading range for the two-dimensional code indicated by the guide portion is aligned with the two-dimensional code, so that the reading port is two-dimensional. Facing the code. Therefore, even if the two-dimensional code with the reading port directed is hidden by the reading unit and cannot be seen by the user holding the gripping portion, the reading port can be directed to the two-dimensional code so that it can be read. .. Therefore, it is possible to realize an optical information reading device that can read both the one-dimensional code and the two-dimensional code and can easily point the reading port at each of the one-dimensional code and the two-dimensional code. it can.

In the invention of claim 2, at least a part of the extending end portion is configured by an attachment detachably attached to the reading portion, and the attachment is provided with a guide at a position corresponding to the one side surface. As a result, not only can the attachment be assembled when reading the 2D code and the attachment can be removed when reading the 1D code, but also multiple types of attachments with different reading ranges for the 2D code are prepared and read in 2D. By changing the reading range for the two-dimensional code according to the shape of the code, the reading port can be directed to the two-dimensional code more accurately.

In the invention of claim 3, the guide unit is configured to indicate the reading range for the two-dimensional code by color or transparency. As a result, the guide portion can be easily provided by using printing or the like on one side surface of the extending end portion.

In the invention of claim 4, the guide unit is configured to indicate the reading range for the two-dimensional code by light emission by the light emitting unit or reflection by the reflection unit. As a result, not only the reading range for the two-dimensional code can be highlighted, but also the light emission by the light emitting unit and the reflection by the reflection unit can be controlled so that the guide function as the guide unit can be exhibited when necessary.

In the invention of claim 5, the guide unit is configured to indicate the reading range for the two-dimensional code by the display on the display screen. As a result, not only the reading range for the two-dimensional code can be highlighted, but also the display content of the display screen can be controlled so as to change the reading range for the two-dimensional code according to the shape of the two-dimensional code to be read. You can point it exactly at the 2D code.

In the invention of claim 6, the guide portion is configured to indicate the reading range for the two-dimensional code by a shape or a pattern. As a result, the guide portion can be provided at low cost by using mold molding or the like.

In the invention of claim 7, one side surface is provided with a predetermined design including figures, characters, symbols, or a combination thereof indicating that the guide portion clearly indicates the reading range for the two-dimensional code. As a result, the user who sees the predetermined design can easily recognize the intention that the guide unit clearly indicates the reading range for the two-dimensional code. That is, by using a predetermined design, the intention of the guide unit can be clearly communicated to the user.

It is sectional drawing which shows the structural outline of the optical information reading apparatus which concerns on 1st Embodiment. It is a top view explaining the state which gripped the grip part. It is a side view explaining the state which gripped the grip part. It is a top view which shows the opening area of the reading port seen from the X1 direction of FIG. 1, FIG. 4A shows the relationship between the 1st opening area and the 2nd opening area, and FIG. 4B shows. , The relationship between the aperture region and the imaging field of view is shown. FIG. 5 is a block diagram schematically illustrating an electrical configuration of the optical information reader of FIG. 1. FIG. 6A is an explanatory view showing a state in which the first opening area of the reading port is directed to the barcode, and FIG. 6B is an explanatory view showing a state in which the first opening area of the reading port is directed to the QR code. It is explanatory drawing which shows the state. FIG. 7A is a perspective view showing a state in which the reading range for the two-dimensional code is matched with the QR code, and FIG. 7B is a perspective view showing a state in which the QR code is covered by the reading port. .. FIG. 8A is a plan view showing a state in which the reading range for the two-dimensional code is matched with the QR code, and FIG. 8B is a plan view showing a state in which the QR code is covered by the reading port. .. FIG. 9A is an explanatory diagram for explaining a guide portion of the optical information reading device according to the first modification of the first embodiment, and FIG. 9B is a second modification of the first embodiment. 9 (C) is an explanatory diagram for explaining the guide portion of the optical information reading device according to the above, and FIG. 9C is an explanatory diagram for explaining the guide portion of the optical information reading device according to the third modification of the first embodiment. is there. It is a perspective view which shows the attachment of the optical information reading apparatus which concerns on 2nd Embodiment, FIG. 10A shows the state before attachment | attachment, and FIG. 10 (B) shows the state after attachment | attachment. FIG. 11 (A) is an explanatory diagram for explaining a guide portion of the optical information reading device according to the third embodiment, and FIG. 11 (B) shows optical information according to the first modification of the third embodiment. It is explanatory drawing explaining the guide part of the reading device, and FIG. 11C is the explanatory drawing explaining the guide part of the optical information reading device which concerns on 2nd modification of 3rd Embodiment. FIG. 12 (A) is an explanatory diagram illustrating a guide portion of the optical information reading device according to the fourth embodiment, and FIG. 12 (B) is an explanatory diagram relating to the first modification of the fourth embodiment. It is explanatory drawing explaining the guide part of a reading apparatus. FIG. 13 (A) is an explanatory diagram illustrating a guide portion of the optical information reading device according to the fifth embodiment, and FIG. 13 (B) is an explanatory diagram relating to the first modification of the fifth embodiment. It is explanatory drawing explaining the guide part of the reading device, and FIG. 13C is the explanatory drawing explaining the guide part of the optical information reading device which concerns on 2nd modification of 5th Embodiment. FIG. 14 (A) is an explanatory diagram illustrating a guide portion of the optical information reading device according to the sixth embodiment, and FIG. 14 (B) shows optical information according to the first modification of the sixth embodiment. It is explanatory drawing explaining the guide part of the reading device, and FIG. 14C is the explanatory drawing explaining the guide part of the optical information reading device which concerns on 2nd modification of 6th Embodiment. It is sectional drawing which shows the structural outline of the optical information reading apparatus which concerns on 7th Embodiment. FIG. 5 is an enlarged cross-sectional view showing an enlarged X2-X2 cross section of FIG. It is a side view which shows the optical information reading apparatus which concerns on 1st modification of 7th Embodiment. It is explanatory drawing explaining the shape of the vicinity of the reading port of FIG. It is sectional drawing which shows the structural outline of the optical information reading apparatus which concerns on 8th Embodiment. It is explanatory drawing explaining the structural outline of the marker irradiation part in the optical information reading apparatus which concerns on 9th Embodiment. It is explanatory drawing which shows the positional relationship between a marker light, an imaging field of view, and illumination light. It is explanatory drawing which shows the main part of the optical information reading apparatus which concerns on 11th Embodiment. It is explanatory drawing which shows the main part of the optical information reading apparatus which concerns on 1st modification of 11th Embodiment. It is explanatory drawing explaining the guide part of the optical information reading apparatus which concerns on 1st modification of another Embodiment. It is a top view which shows the opening area of the reading port in the optical information reading apparatus which concerns on the 2nd modification of another embodiment.

[First Embodiment]
Hereinafter, the first embodiment embodying the optical information reading device according to the present invention will be described with reference to the drawings.
The optical information reading device 10 according to the present embodiment is configured as an information code reader that optically reads an information code such as a one-dimensional code or a two-dimensional code displayed on a predetermined display surface. Here, as the one-dimensional code, for example, a so-called bar code composed of JAN code, EAN, UPC, ITF code, CODE39, CODE128, NW-7, etc. is assumed. Further, as the two-dimensional code, for example, a square information code such as a QR code, a data matrix code, a maxi code, or an Aztec code is assumed.

As shown in FIG. 1, the optical information reading device 10 has an outer shell formed by a housing 11 formed by assembling an upper case 11a and a lower case 11b made of a synthetic resin such as ABS resin, and the housing 11 A circuit unit 20a made of various electric components and the like is mounted and housed on a circuit board 20 and the like inside. The housing 11 includes a reading unit 12 formed with a reading port 50 that introduces light from the information code into the inside of the housing 11, and a gripping unit 13 that is gripped when the reading port 50 is directed toward the information code. It has.

As shown in FIGS. 1 and 3, when the longitudinal direction of the grip portion 13 is horizontal, the reading unit 12 extends diagonally downward from the end portion on one side of the grip portion 13 in the longitudinal direction, and the extending end thereof. It is connected to the grip portion 13 so that the reading port 50 is located in the portion 12a. That is, the housing 11 is formed in a bent neck shape in which one end side on which the reading port 50 is formed is greatly tilted forward toward the back surface side. As a result, as shown in FIGS. 2 and 3, the information code displayed on the predetermined display surface R along the horizontal plane while the user grips the grip portion 13 from the upper case 11a side so as to be sandwiched between the fingertips. The reading port 50 is easily directed to C. Further, a cable mounting portion 14 is formed on the other end side of the housing 11 (the other side in the longitudinal direction of the grip portion 13).

As shown in FIGS. 4A and 4B, in the extending end portion 12a of the reading portion 12, the peripheral edge 51 constituting the reading port 50 has one side edge portion 52 away from the grip portion 13 as a lower base. It is formed in a substantially trapezoidal shape so that the other side edge 53, which is an edge facing the one side edge 52 and is shorter than the one side edge 52, is the upper base. More specifically, the peripheral edge 51 is formed in a substantially isosceles trapezoidal shape so that the legs 54 and 55 have symmetrical shapes.

By opening the reading port 50 in this way, as shown in FIG. 4A, an opening region (hereinafter, also referred to as a first opening region S1) that is long in one direction near the one side edge portion 52 is formed. It can be used as an information code that is long in the direction, that is, as an opening area for reading a one-dimensional code. Further, a rectangular opening region (hereinafter, also referred to as a second opening region S2) having a part of the one side edge portion 52 and the other side edge portion 53 as opposite sides is defined as a square information code, that is, two-dimensional. It can be used as an opening area for reading the code.

In particular, as shown in FIGS. 2 and 4, in the present embodiment, one side surface 12b of the outer surface of the extending end portion 12a, which is separated from the grip portion 13, has a two-dimensional shape corresponding to the second opening region S2. A guide unit 60 is provided to indicate the code reading range D. The guide portion 60 is composed of a pair of thick line-shaped guides 61 and 62 printed in different colors (for example, red) on one side surface 12b. As shown in FIG. 4A, both guides 61 and 62 use both ends of the range in which the second opening region S2 is projected with respect to the lower end 12c of the one side surface 12b as both ends of the reading range D for the two-dimensional code. They are arranged as shown. In FIGS. 4A and 4B, guides 61 and 62 are exaggerated for convenience of explanation.

Next, the electrical configuration of the optical information reading device 10 will be described with reference to the drawings.
As shown in FIGS. 1 and 5, the circuit unit 20a housed in the housing 11 mainly includes an optical system such as an illumination light source 21, a light receiving sensor 28, and an imaging lens 27, a memory 35, a control circuit 40, and the like. It is equipped with a microcomputer (hereinafter referred to as "microcomputer") system.

The optical system is divided into a light projecting optical system and a light receiving optical system. The illumination light source 21 constituting the floodlight optical system functions as an illumination unit capable of emitting illumination light Lf, and is composed of, for example, a red LED 21a and a lens 21b provided on the emission side of the LED 21a. As can be seen from the illumination optical axis L1 shown in FIG. 1, the illumination light source 21 is arranged so as to irradiate the illumination light Lf so as to be inclined with respect to the imaging optical axis L2. This is because if the illumination light Lf is irradiated parallel to the imaging optical axis L2, specular reflection occurs. Note that FIG. 5 conceptually shows an example of irradiating the illumination light Lf through the reading port 50 toward the display surface R on which the information code C is displayed.

The light receiving optical system includes a light receiving sensor 28, an imaging lens 27, a reflecting mirror (not shown), and the like. The light receiving sensor 28 is configured as an area sensor in which light receiving elements, which are solid-state image pickup elements such as C-MOS and CCD, are arranged two-dimensionally, and has a light receiving surface 28a as a rectangular light receiving region. It is configured. The light receiving sensor 28 is mounted on the circuit board 20 so as to be able to receive the incident light incident through the reading port 50, the protective plate 26, and the imaging lens 27.

The imaging lens 27 functions as an imaging optical system capable of condensing incident light incident from the outside through the reading port 50 and forming an image on the light receiving surface 28a of the light receiving sensor 28. In the present embodiment, after the illumination light Lf emitted from the illumination light source 21 is reflected by an information code or the like, the reflected light Lr is condensed by the imaging lens 27, and a code image or the like is formed on the light receiving surface 28a of the light receiving sensor 28. Is imaged. In the present embodiment, the imaging lens 27 is arranged so that the tilt angle between the reading port 50 and the imaging optical axis L2 is, for example, about 45 ° to 70 ° in order to suppress the influence of specular reflection. There is. In particular, as shown in FIG. 4B, the imaging lens 27 has an imaging field of view AR in a plane including the reading port 50 of the light receiving sensor 28 having a rectangular light receiving surface 28a, and a gap of 5 mm from the peripheral edge 51. It is arranged so as to have a trapezoidal shape slightly narrower than the peripheral edge 51. The light receiving sensor 28, the imaging lens 27, and the like can correspond to an example of the “imaging unit”.

The microcomputer system includes an amplifier circuit 31, an A / D conversion circuit 33, a memory 35, an address generation circuit 36, a synchronization signal generation circuit 38, a control circuit 40, a trigger switch 42, a buzzer 44, a vibrator 45, a light emitting unit 46, and a communication interface 48. It is composed of etc. As the name implies, this microcomputer system is composed mainly of a control circuit 40 and a memory 35 that can function as a microcomputer (information processing device), and hardware the image signal of the information code captured by the above-mentioned optical system. It can process signals in terms of hardware and software. The control circuit 40 also controls the entire system of the optical information reading device 10.

The image signal (analog signal) output from the light receiving sensor 28 of the optical system is amplified by a predetermined gain by being input to the amplifier circuit 31, and then input to the A / D conversion circuit 33 from the analog signal. Converted to a digital signal. Then, when the digitized image signal, that is, image data (image information) is input to the memory 35, it is stored in the image data storage area. The synchronization signal generation circuit 38 is configured to be capable of generating a synchronization signal for the light receiving sensor 28 and the address generation circuit 36, and the address generation circuit 36 is based on the synchronization signal supplied from the synchronization signal generation circuit 38. Therefore, the storage address of the image data stored in the memory 35 can be generated.

The memory 35 is a semiconductor memory device, and for example, a RAM (DRAM, SRAM, etc.) or a ROM (EPROM, EEPROM, etc.) corresponds to this. In addition to the image data storage area described above, the RAM of the memory 35 is configured to be able to secure a work area and a read condition table used by the control circuit 40 at each process such as arithmetic operation and logical operation. .. Further, the ROM stores in advance a system program or the like capable of controlling each hardware such as the illumination light source 21 and the light receiving sensor 28.

The control circuit 40 is a microcomputer capable of controlling the entire optical information reading device 10, and includes a CPU, a system bus, an input / output interface, etc., and can form an information processing device together with a memory 35 and has an information processing function. .. The control circuit 40 is configured to be connectable to various input / output devices (peripheral devices) via a built-in input / output interface. In the case of this embodiment, the trigger switch 42, the buzzer 44, the vibrator 45, and light emission. The unit 46, the communication interface 48, and the like are connected. Thereby, for example, monitoring and management of the trigger switch 42, on / off of the sound of the buzzer 44 capable of generating a beep sound or an alarm sound, and a vibrator 45 capable of generating vibration that can be transmitted to the user of the optical information reading device 10. The control circuit 40 performs drive control, lighting of the light emitting unit 46, non-lighting, and communication control of the communication interface 48 that enables communication with an external device.

Next, a case where the information code C is read by using the optical information reading device 10 configured as described above will be described with reference to FIGS. 6 to 8.
When reading an information code C such as a one-dimensional code or a two-dimensional code, the control circuit 40 performs the following in response to a predetermined operation on the trigger switch 42 with the reading port 50 facing the information code C. The reading process is performed.

When reading the barcode C1 as a one-dimensional code that is long in one direction, the barcode C1 is brought closer to the barcode C1 by the reading port 50 so that the portion of the reading unit 12 that is long in one direction near the one-side edge 52 is close to the barcode C1. Cover C1. As a result, as shown in FIG. 6A, the first opening region S1 faces the barcode C1, and the barcode C1 can be imaged through the first opening region S1.

When reading the QR code C2 as a square two-dimensional code, first, as shown in FIGS. 7 (A) and 8 (A), the two-dimensional code reading range D indicated by the pair of guides 61 and 62. Is aligned with the QR code C2, and the reading port 50 is directed toward the QR code C2. At this time, the user visually recognizes the QR code C2 so that the reading unit 12 hides a part of the front side (see the broken line portion in FIG. 8A). Then, by hiding the QR code C2 in the reading range D for the two-dimensional code and moving the reading port 50 to the back side (left side of FIG. 8A), FIGS. 7 (B) and 8 (B) As shown in B), the QR code C2 is covered with the reading port 50. As a result, as shown in FIG. 6B, the second opening region S2 faces the QR code C2, and the QR code C2 can be imaged through the second opening region S2.

In this way, when a predetermined operation is performed on the trigger switch 42 with the first opening region S1 directed toward the barcode C1 or the second opening region S2 directed toward the QR code C2. The illumination light Lf is emitted from the illumination light source 21 through the reading port 50, and the reflected light Lr reflected by the information code C is received by the light receiving sensor 28 via the reading port 50. When the information code C is imaged and image data is generated based on the signal output from the light receiving sensor 28 in response to the light reception, the code image corresponding to the information code C in the image data is known. Decoding processing (reading processing) is performed. By this process, the character data or the like encoded as the information code C is decoded.

When this decoding is successful, at least one of ringing of the buzzer 44, vibration of the vibrator 45, light emission of the light emitting unit 46, and the like is performed as a process of the notification unit for notifying the success of the decoding. If the decoding is successful based on the image data generated based on a part of the signals output from the light receiving sensor 28, the remaining signals are unnecessary. In this case, by interrupting the processing after the generation of the image data based on the remaining signal, not only the processing load related to decoding (optical reading) can be reduced, but also the processing time can be shortened.

As described above, in the optical information reading device 10 according to the present embodiment, the reading port 50 extends diagonally downward from the end portion on one side in the longitudinal direction of the grip portion 13 and is located at the extending end portion 12a. In this way, the reading unit 12 is connected to the gripping unit 13, and the opening area of the reading port 50 includes a first opening area S1 that is long in one direction and is used when reading a one-dimensional code, and when reading a two-dimensional code. A second opening area S2 to be used is provided. A guide portion 60 for indicating the two-dimensional code reading range D corresponding to the second opening region S2 is provided on one side surface 12b of the outer surface of the extending end portion 12a, which is separated from the grip portion 13.

As a result, the user holding the grip portion 13 directs the long portion of the reading unit 12 in one direction toward the one-dimensional cord, so that the first opening region S1 faces the one-dimensional cord. On the other hand, the user holding the grip portion 13 directs the reading port 50 toward the two-dimensional code so that the reading range D for the two-dimensional code indicated by the guide portion 60 is aligned with the two-dimensional code. The second opening region S2 faces the two-dimensional code. Therefore, even if the two-dimensional code with the reading port 50 directed is hidden by the reading unit 12 and cannot be seen by the user holding the gripping unit 13, the reading port 50 can be read by the two-dimensional code. Can be turned. Therefore, the optical information reading device 10 that can read both the one-dimensional code and the two-dimensional code and can easily point the reading port 50 at each of the one-dimensional code and the two-dimensional code is realized. be able to.

In particular, the guide unit 60 is configured so that the reading range D for the two-dimensional code is indicated by the colors of the pair of guides 61 and 62 printed differently with respect to one side surface 12b. In this way, by forming a pair of guides 61 and 62 on one side surface 12b of the extending end portion 12a by using printing, the guide portion can be easily provided. The pair of guides 61 and 62 is not limited to being printed in red as described above, but is also configured to show another different color on one side surface 12b by printing or the like. Alternatively, a member having a predetermined transparency may be arranged on one side surface 12b.

Further, the guide portion 60 is not limited to being composed of a pair of guides 61 and 62 formed in a thick line shape, and may be composed of another shape that makes it easy to visually recognize the reading range D for the two-dimensional code. For example, the guide portion 60 may be composed of a pair of guides 61 and 62 formed in a triangular shape as in the first modification of the first embodiment shown in FIG. 9A. Further, the guide unit 60 may be configured by one triangle showing the reading range D for the two-dimensional code at the base as in the second modification of the first embodiment shown in FIG. 9B. Further, the guide unit 60 has a reading range D for a two-dimensional code in addition to the pair of guides 61 and 62 formed in a triangular shape as in the third modification of the first embodiment shown in FIG. 9C. It may be configured by a third guide 63 formed in a triangular shape so as to indicate the center of the above. That is, the guide unit 60 may be composed of three or more marks (marks) indicating the reading range D for the two-dimensional code.

[Second Embodiment]
Next, the optical information reading device according to the second embodiment of the present invention will be described with reference to FIG.
The second embodiment is different from the first embodiment in that a guide is provided on the detachable attachment. Therefore, the same reference numerals are given to the components substantially the same as those in the first embodiment, and the description thereof will be omitted.

As shown in FIGS. 10A and 10B, in the present embodiment, an attachment 70 that is detachably attached to the extending end portion 12a of the reading unit 12 is provided, and a guide display surface of the attachment 70 is provided. 71 constitutes at least a part of the one side surface 12b. On the guide display surface 71, a pair of thick line guides 61a and 62a are displayed as guide portions 60a for indicating the reading range D for the two-dimensional code.

As a result, it is possible to perform a reading operation such that the attachment 70 is assembled when reading the two-dimensional code and the attachment 70 is removed when reading the one-dimensional code. In particular, by preparing a plurality of types of attachments 70 having different reading ranges D for the two-dimensional code shown by the guide unit 60a and changing the reading range D for the two-dimensional code according to the shape of the two-dimensional code to be read, reading is performed. The mouth 50 can be more accurately pointed at the two-dimensional code. For example, when reading a relatively small two-dimensional code, the two-dimensional code can be read by attaching the attachment 70 whose reading range D for the two-dimensional code, which is set small according to the size, is indicated by the guide unit 60a. The reading port 50 can be accurately pointed at. This is because the closer the length of the two-dimensional code reading range D shown by the guide unit 60a is to the width of the two-dimensional code, the easier it is to match the two-dimensional code reading range D with the two-dimensional code.

The guide portion 60a displayed on the guide display surface 71 of the attachment 70 is not limited to being composed of a pair of guides 61a and 62a formed in a thick line, for example, FIGS. 9A to 9A described above. As in C), the reading range D for the two-dimensional code may be configured by another shape that is easy to see.

[Third Embodiment]
Next, the optical information reading device according to the third embodiment of the present invention will be described with reference to FIG.
The third embodiment is different from the first embodiment in that a guide unit whose display state changes is adopted. Therefore, the same reference numerals are given to the components substantially the same as those in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 11A, the guide portion 60b according to the present embodiment is configured to include a pair of triangular guides 61b and 62b including light emitting portions such as LEDs. Both guides 61b and 62b are configured to emit light in a predetermined emission color under the control of the control circuit 40 when the reading process is performed by the control circuit 40.

By configuring the guide unit 60b in this way, the reading range D for the two-dimensional code can be highlighted even in a dark place. In particular, by controlling the light emission by the light emitting unit with the control circuit 40, it is possible to exert the guide function as the guide unit 60b when necessary, such as when the reading process is performed.

The guide unit 60b is not limited to being composed of a pair of guides 61b and 62b composed of a triangular light emitting unit, but is composed of a light emitting unit having another shape that makes it easy to visually recognize the reading range D for the two-dimensional code. May be good. For example, the guide unit 60b is composed of one trapezoidal light emitting unit showing a reading range D for a two-dimensional code at the lower bottom as in the first modification of the third embodiment shown in FIG. 11 (B). You may. Further, the guide unit 60b has a reading range for a two-dimensional code in addition to the pair of guides 61b and 62b composed of a triangular light emitting unit, as in the second modification of the third embodiment shown in FIG. 11C. It may be composed of a third guide 63b composed of a triangular light emitting portion having a total length longer than both guides 61b and 62b so as to indicate the center of D. That is, the guide unit 60b may be composed of three or more light emitting units indicating the reading range D for the two-dimensional code.

Further, the guide portion 60b is not limited to the pair of guides 61b, 62b and the like being configured as a light emitting portion, and may be configured as a reflecting portion that reflects light emitted from the outside. Even in this way, the reading range D for the two-dimensional code can be highlighted.

It should be noted that the characteristic configurations of the present embodiment and the modified examples in which the guide unit 60b whose display state is changed by using the light emitting unit and the reflecting unit can be applied to other embodiments and the like.

[Fourth Embodiment]
Next, the optical information reading device according to the fourth embodiment of the present invention will be described with reference to FIG.
The fourth embodiment is mainly different from the first embodiment in that the reading range D for the two-dimensional code is indicated by the display on the display screen. Therefore, the same reference numerals are given to the components substantially the same as those in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 12A, the guide unit 60c according to the present embodiment is configured by a liquid crystal display or the like in which the display content of the display screen 64 is controlled by the control circuit 40. In the present embodiment, the display screen 64 is square and is formed so that the long side along the lower end 12c coincides with the reading range D for the two-dimensional code, and when the control circuit 40 performs the reading process, The control circuit 40 controls the entire surface so that the display state is one color.

By configuring the guide unit 60c in this way, the two-dimensional code reading range D can be highlighted on the display screen 64 even in a dark place.

The guide unit 60c is not limited to highlighting the two-dimensional code reading range D when the entire surface is in a one-color display state, but also emphasizes the two-dimensional code reading range D when it is in another display state. It may be displayed. For example, the guide unit 60c uses a predetermined figure such as a triangle at one end and the other end of the reading range D for the two-dimensional code, as in the first modification of the fourth embodiment shown in FIG. 12B. By clearly indicating, the reading range D for the two-dimensional code may be highlighted.

In particular, the guide unit 60c reads the display content of the display screen 64 so as to switch the reading range D for the two-dimensional code according to the shape of the two-dimensional code to be read, as in the second embodiment. The mouth 50 can be more accurately pointed at the two-dimensional code. The switching of the reading range D for the two-dimensional code can be performed in response to a predetermined operation or an instruction from the higher-level terminal. For example, a dedicated information code for setting the reading range D for the two-dimensional code. It can also be carried out by reading.

The characteristic configurations of the present embodiment and the modified examples in which the reading range D for the two-dimensional code is indicated by the display on the display screen 64 can be applied to other embodiments and the like.

[Fifth Embodiment]
Next, the optical information reading device according to the fifth embodiment of the present invention will be described with reference to FIG.
The fifth embodiment is mainly different from the first embodiment in that the reading range D for the two-dimensional code is indicated by the shape or pattern applied to one side surface 12b. Therefore, the same reference numerals are given to the components substantially the same as those in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 13A, the guide portion 60d according to the present embodiment is composed of a pair of guides 61d and 62d formed by using notches with respect to the lower end 12c of one side surface 12b. .. Both guides 61d and 62d are arranged so that both ends of the range in which the second opening region S2 is projected with respect to the lower end 12c are shown as both ends of the reading range D for the two-dimensional code.

Even if the guide unit 60d is configured in this way, the two-dimensional code reading range D can be clearly indicated by using the guide unit 60d. In particular, by using mold molding or the like, the guide portion 60d is also formed when the upper case 11a and the lower case 11b are formed, so that the guide portion 60d can be provided inexpensively without causing print peeling or the like. it can.

The guide portion 60d is not limited to being composed of a pair of guides 61d and 62d formed by using notches, and has another shape or pattern provided on one side surface 12b, for example, a semi-cylindrical shape. It may be composed of protrusions, square recesses, or the like. For example, the guide portion 60d is recessed in a substantially rectangular shape so that the long side along the lower end 12c coincides with the reading range D for the two-dimensional code, as in the first modification of the fifth embodiment shown in FIG. 13B. It may be composed of recesses formed in. Further, the guide portion 60d is used for a two-dimensional code in addition to the pair of guides 61d and 62d formed by the triangular notches, as in the second modification of the fifth embodiment shown in FIG. 13C. It may be composed of a third guide 63d formed by recesses recessed in a triangular shape so as to indicate the center of the reading range D. That is, the guide unit 60d may be composed of a mark (mark) composed of three or more shapes or patterns indicating the reading range D for the two-dimensional code.

The characteristic configurations of the present embodiment and the modified examples in which the reading range D for the two-dimensional code is indicated by the shape or pattern provided on one side surface 12b can be applied to other embodiments and the like.

[Sixth Embodiment]
Next, the optical information reading device according to the sixth embodiment of the present invention will be described with reference to FIG.
The sixth embodiment is mainly different from the first embodiment in that a predetermined design is provided on one side to indicate that the guide portion clearly indicates the reading range for the two-dimensional code. Therefore, the same reference numerals are given to the components substantially the same as those in the first embodiment, and the description thereof will be omitted.

In the present embodiment, as shown in FIG. 14A, guides 61e and 62e composed of a pair of L-shaped arrows are printed on one side surface 12b as guide portions 60e indicating the reading range D for the two-dimensional code. Etc., and a predetermined design 65 indicating that both guides 61e and 62e clearly indicate the reading range D for the two-dimensional code is displayed by printing or the like. This design 65 is configured by combining the characters "QR" reminiscent of the two-dimensional code and the QR code itself in order to show that the reading range is for the two-dimensional code.

By applying the design 65 indicating that the guide unit 60e and the guide unit 60e clearly indicate the reading range D for the two-dimensional code on one side surface 12b in this way, the user who sees the design 65 can use the guide unit 60e. It can be easily recognized that the reading range D for the two-dimensional code is specified. That is, by using the design 65, the intention of the guide unit 60e can be clearly communicated to the user.

The design 65 is not limited to being composed of the characters "QR" and the QR code itself, but is a graphic character, a character, a symbol, which reminds us that the guide unit 60e clearly indicates the reading range D for the two-dimensional code. Alternatively, it may be composed of a combination thereof.

Further, the design 65 is provided on one side surface 12b together with the guide portion 60e in which both ends of the reading range D for the two-dimensional code are indicated by arrows, as in the first modification of the sixth embodiment shown in FIG. 14B, for example. It may be displayed. Further, in the design 65, for example, as in the second modification of the sixth embodiment shown in FIG. 14C, the center of the reading range D for the two-dimensional code is centered on the guides 61e and 62e formed by the L-shaped arrows. It may be displayed on one side surface 12b together with the guide portion 60e to which the third guide 63e shown is added. Further, the design 65 may be displayed on one side surface 12b together with other guide portions such as the guide portions 60 to 60d described above.

[7th Embodiment]
Next, the optical information reading device according to the seventh embodiment of the present invention will be described with reference to FIGS. 15 and 16.
The seventh embodiment is mainly different from the first embodiment in that a wall portion is provided that projects diagonally downward from one side edge portion. Therefore, the same reference numerals are given to the components substantially the same as those in the first embodiment, and the description thereof will be omitted.

As shown in FIGS. 15 and 16, in the present embodiment, the one side edge portion 52 is provided with a wall portion 56 that projects in a thin plate shape along the diagonally downward portion. In this wall portion 56, only one side edge portion 52 of the peripheral edge 51 is projected obliquely downward with its thickness, and the protrusion length H from the one side edge portion 52 to the protruding end portion 56a is the protruding end portion 56a. Is formed so as to have a length corresponding to a distance suitable for imaging of the information code C displayed on the display surface R in contact with the above. Specifically, the wall portion 56 has, for example, such that the protruding length H becomes the best focus or approaches the best focus with respect to the imaging of the information code C displayed on the display surface R in which the protruding end portion 56a is in contact. , Is formed.

The outer surface of the wall portion 56 constitutes the one side surface 12b, and the one side surface 12b is provided with a guide portion 60 for indicating the reading range D for the two-dimensional code.

In the optical information reading device configured as described above, the two-dimensional code reading range D indicated by the pair of guides 61 and 62 is aligned with the QR code C2, and the protruding end portion 56a of the wall portion 56 is set to the QR code. Contact C2. Then, by hiding the QR code C2 in the reading range D for the two-dimensional code and moving the reading port 50 to the back side, the second opening region S2 faces the QR code C2 and the second opening The QR code C2 can be imaged through the region S2.

As described above, in the optical information reading device 10 according to the present embodiment, the one side edge portion 52 of the peripheral edge 51 of the reading port 50, which is separated from the grip portion 13, has a wall protruding diagonally downward. A portion 56 is provided.

As a result, when the information code C is imaged with the reading port 50 away from the display surface R, the wall portion 56 is located behind the information code C when viewed from the user who grips the grip portion 13. Since the user himself / herself is located on the front side of the information code C, it is possible to make it difficult to image the external light reflected by the information code C or the like without impairing the visibility of the information code C. Further, since the reflected light from the information code C or the like by the illumination light Lf passing through the reading port 50 is less likely to be reflected by the wall portion 56 to the back side of the information code C, the direction in which the reading port 50 is directed (the back side). It is possible to suppress the glare felt by a person in the direction corresponding to). In particular, since the protruding end portion 56a, which is the tip end side of the wall portion 56, is brought into contact with the display surface R, the influence of external light and the glare felt by surrounding people can be suppressed more reliably. Therefore, when reading the information code C, it is possible to realize an optical information reading device 10 capable of suppressing the influence of external light and the glare felt by surrounding people without impairing the visibility of the information code C. ..

In particular, the wall portion 56 has a protruding length H from the one side edge portion 52 to the protruding end portion 56a at a distance suitable for imaging the information code C displayed on the display surface R in which the protruding end portion 56a is in contact. It is formed so as to have a corresponding length. As a result, the information code C suitable for reading can be imaged by directing the reading port 50 toward the information code C so that the protruding end portion 56a is in contact with the display surface R, so that the reading success rate of the information code C is increased. be able to.

As in the first modification of the seventh embodiment shown in FIGS. 17 and 18, a pair of facing portions facing the peripheral edge 51 of the reading port 50 via the reading port 50 and connected to the wall portion 56, respectively. 57a and 57b may be provided. The facing portion 57a projects the leg 54 diagonally downward with its thickness, and the protrusion length becomes longer as it gets closer to the one side edge portion 52, and the protrusion length becomes the wall portion 56 in the vicinity of the one side edge portion 52. It is formed so as to be equal to the protrusion length H of. Further, in the facing portion 57b, the leg 55 is projected diagonally downward with its thickness, and the protruding length becomes longer as it gets closer to the one side edge portion 52, and the protruding length becomes a wall in the vicinity of the one side edge portion 52. It is formed so as to be equal to the protruding length H of the portion 56. That is, a wall portion having a substantially U-shaped cross section is formed so as to project diagonally downward from the peripheral edge 51. In particular, as shown in FIG. 17, the facing portions 57a and 57b are symmetrically formed so that the width becomes narrower toward the protruding end side.

By providing the wall portion 56 and the pair of facing portions 57a and 57b in this way, the wall portion 56 is reinforced by utilizing the pair of facing portions 57a and 57b, and only the influence of the external light from the back side is obtained. It is also possible to suppress the influence of external light from the left and right directions.

When the reading ports 50 are formed so as to open in a square shape, the pair of facing portions 57a and 57b may be formed so as to be substantially parallel to each other.

It should be noted that the characteristic configurations of the present embodiment and the modified examples in which the wall portion 56 and the pair of facing portions 57a and 57b are provided can be applied to other embodiments and the like.

[8th Embodiment]
Next, the optical information reading device according to the eighth embodiment of the present invention will be described with reference to FIG.
In the eighth embodiment, the irradiation direction of the illumination light Lf emitted from the illumination light source 21 is mainly different from that of the seventh embodiment. Therefore, the same reference numerals are given to the components substantially the same as those in the seventh embodiment, and the description thereof will be omitted.

When the angle of the illumination light Lf with respect to the display surface R, that is, the angle of inclination between the display surface R and the illumination light axis L1 is close to 90 °, the specular reflection caused by the illumination light Lf tends to affect the reading. Become. On the other hand, if the angle in the irradiation direction is simply reduced, it becomes difficult for the illumination light Lf to irradiate the information code C with the reading port 50 directed.

Therefore, in the present embodiment, as illustrated in FIG. 19, the illumination light source 21 is arranged so as to irradiate the illumination light Lf toward the inner surface 56b of the wall portion 56.

As a result, the illumination light Lf emitted from the illumination light source 21 in a state where the protruding end portion 56a is in contact with the position of the display surface R near the back side of the information code C passes through the reading port 50 and then the wall portion. The information code C is irradiated by reflecting on the inner surface 56b of 56.

In this way, by arranging the illumination light source 21 so that the illumination light Lf is emitted toward the inner surface 56b of the wall portion 56 through the reading port 50, the information code C that brings the wall portion 56 closer is the wall portion. Since it is illuminated by the reflected light reflected by 56, it is possible to suppress the influence of the mirror surface reflection caused by the illumination light Lf on the reading of the information code C while ensuring the necessary illuminance.

The characteristic configuration of the present embodiment in which the illumination light Lf is irradiated toward the inner surface 56b of the wall portion 56 can be applied to other embodiments and the like.

[9th Embodiment]
Next, the optical information reading device according to the ninth embodiment of the present invention will be described with reference to FIGS. 20 and 21.
The ninth embodiment is mainly different from the seventh embodiment in that a marker irradiation unit for irradiating a marker light for indicating the center of the imaging field AR is provided. Therefore, the same reference numerals are given to the components substantially the same as those in the seventh embodiment, and the description thereof will be omitted.

In the present embodiment, as shown in FIG. 20, the marker irradiation unit 29 that irradiates the circular marker light Lm for indicating the center of the imaging field AR (imaging optical axis L2) through the reading port 50 It is provided in the housing 11. The marker irradiation unit 29 includes a marker light source 29a, an aperture 29b, a marker lens 29c, and the like, and the marker light source 29a can reduce the angle difference between the marker optical axis L3 of the marker light Lm and the imaging optical axis L2. It is arranged so as to be close to the light receiving sensor 28.

In particular, in the present embodiment, the illumination light Lf and the marker light Lm are alternately irradiated in a state where the information code C can be read, and the user can use the illumination light Lf and the marker light Lm. Is visually recognized as being irradiated at the same time. Therefore, in the present embodiment, red is adopted as the color of the illumination light Lf, and green, which has a wavelength close to 555 nm, which is the maximum visual sensitivity, is adopted as the color of the marker light Lm in consideration of Color Universal Design. ing. The colors of the illumination light Lf and the marker light Lm described above are merely examples. For example, when the illumination light Lf is irradiated in white, the marker light Lm may be irradiated in red, or the illumination light Lf is red. The marker light Lm may be irradiated in orange when irradiated with, or the marker light Lm may be irradiated in green when the illumination light Lf is irradiated in white.

When the marker irradiation unit 29 is provided as described above and the illumination light Lf is irradiated to read the information code C, the marker light indicating the center of the imaging field AR is shown as illustrated in FIG. Lm is visually recognized. As a result, the user can easily visually recognize the imaging field AR by the position of the marker light Lm, and can appropriately point the reading port 50 with respect to the information code C.

The characteristic configuration of this embodiment that irradiates the marker light Lm for indicating the center of the imaging field AR can be applied to other embodiments and the like.

[10th Embodiment]
Next, the optical information reading device according to the tenth embodiment of the present invention will be described below.
The tenth embodiment is mainly different from the first embodiment in that a signal taken from the light receiving sensor 28 and used for the decoding process is selected according to the reading target. Therefore, the same reference numerals are given to the components substantially the same as those in the first embodiment, and the description thereof will be omitted.

In the present embodiment, in the reading process performed by the control circuit 40, the light receiving sensor 28 responds to the light received from the information code C taken in through the first opening region S1 and the second opening region S2. Received light according to the state of decoding (reading) the information code based on the signal output from (information code reading mode) and the reception of the reflected light from the one-dimensional code captured through the first opening region S1. A state (one-dimensional code reading mode) in which the one-dimensional code is decoded (read) based on the signal output from the sensor 28 is prepared.

The information code reading mode is set by default, and the reading process performed by the control circuit 40 can read the information code including both the one-dimensional code and the two-dimensional code.

Then, when the reading target is only a one-dimensional code, the control functioning as a switching unit in the reading process performed by the control circuit 40 in response to a predetermined operation or reading of the information code for mode switching. The circuit 40 switches to the one-dimensional code reading mode.

In the state of switching to the one-dimensional code reading mode in this way, the reading port 50 is set to the first opening region S1 so that the portion of the reading unit 12 near the one-side edge portion 52 that is long in one direction is brought closer to the one-dimensional code. Just point it at the one-dimensional code. As a result, not only the reading port 50 can be easily directed to the position where the one-dimensional code is read, but also the reading target becomes clear, so that the load of the decoding process (reading process) can be reduced and the time can be shortened.

As a modification of the present embodiment, further, the two-dimensional code is decoded based on the signal output from the light receiving sensor 28 in response to the reception of the reflected light from the two-dimensional code taken in through the second opening region S2. A state (two-dimensional code reading mode) can be prepared.

Therefore, when the reading target is only a two-dimensional code, the two-dimensional code is read in the reading process performed by the control circuit 40 in response to a predetermined operation or reading of the information code for mode switching. In the state of switching to the mode, if the reading port 50 is directed to the two-dimensional code in the second opening region S2 so that the reading range D for the two-dimensional code indicated by the pair of guides 61 and 62 is aligned with the two-dimensional code. Good. As a result, not only can the reading port 50 be easily directed to the position where the two-dimensional code is read, but also the reading target becomes clear, so that the load of the decoding process (reading process) can be reduced and the time can be shortened.

The characteristic configuration of the present embodiment, which is taken from the light receiving sensor 28 according to the reading target and selects the signal to be used for the decoding process, can be applied to other embodiments and the like.

[11th Embodiment]
Next, the optical information reading device according to the eleventh embodiment of the present invention will be described with reference to FIG.
The eleventh embodiment is mainly different from the first embodiment in that the imaging center (optical center) P is arranged so as to be located at the center of the first aperture region S1. Therefore, the same reference numerals are given to the components substantially the same as those in the first embodiment, and the description thereof will be omitted.

In the present embodiment, since the reading of the one-dimensional code is more important than the reading of the two-dimensional code, the imaging lens 27 that forms an image of the reflected light from the information code on the light receiving sensor 28 is as shown in FIG. The image formation center P is arranged so as to be located at the center of the first aperture region S1 by adjusting the inclination of the image formation optical axis L2.

As a result, light reception is ensured in the light receiving region corresponding to the first opening region S1, so that the reading accuracy of the one-dimensional code can be improved.

In particular, in the present embodiment, as shown in FIG. 22, the illumination light source 21 is configured to irradiate band-shaped light (substantially line-shaped light) as illumination light Lf toward the first opening region S1. There is.

Therefore, not only is it easier to irradiate the one-dimensional code to be read with the illumination light Lf, but also the illumination light Lf functions as a guide light, so that the reading port 50 is one-dimensional in the first opening region S1. It's easier to point at the code. This makes it easier to receive the reflected light Lr from the one-dimensional code directed to the first opening region S1, so that the reading accuracy of the one-dimensional code can be further improved.

When the reading of the two-dimensional code is more important than the reading of the one-dimensional code, the illumination light Lf having a rectangular cross section is generated from the illumination light source 21 as in the first modification of the eleventh embodiment shown in FIG. It may be configured to be irradiated through the second opening region S2.

In this case, the light receiving sensor 28 can easily receive the reflected light Lr from the two-dimensional code directed to the second opening region S2, so that the reading accuracy of the two-dimensional code can be improved. In particular, since the illumination light Lf having a rectangular cross section functions as a guide light, it becomes easy to direct the reading port 50 toward the two-dimensional code in the second opening region S2.

In the eleventh embodiment and its modifications, the light emitting state of the illumination light source 21 may be controlled according to a predetermined input operation. For example, when reading the two-dimensional code in a state where the band-shaped illumination light Lf is irradiated through the first opening region S1, the illumination light Lf may be turned off or the illumination light Lf having a rectangular cross section may be turned off. May be irradiated through the second opening region S2. Further, when reading the one-dimensional code in a state where the illumination light Lf having a rectangular cross section is irradiated through the second opening region S2, the illumination light Lf may be turned off or the band-shaped illumination light Lf may be turned off. May be irradiated through the first opening region S1.

[Other Embodiments]
The present invention is not limited to the above embodiments and modifications, and may be embodied as follows, for example.
(1) The pair of guides 61 and 62 constituting the guide portion 60 are not limited to be formed so as to be parallel to each other, and are two-dimensional as in the first modification of another embodiment shown in FIG. 24. In order to make it easier to imagine the position of the second opening region S2 for reading the code, the guide 61 and the guide 62 may be configured so as to be closer to the lower end 12c. The same effect can be obtained with the other guide portions 60a to 60e.

(2) The reading port 50 that takes in the reflected light from the information code is not limited to being formed so as to open in a substantially trapezoidal shape as described above, and other opening shapes, for example, one side edge portion 52, etc. It may be formed so as to open in a T shape longer than the side edge portion 53. Further, the one side surface 12b is not limited to being formed in a substantially flat shape, and becomes an arc shape when the reading port 50 is viewed in a plane as in the second modification of another embodiment shown in FIG. 25. It may be formed as follows. That is, the peripheral edge 51 may be formed so that at least a part thereof has an arc shape when the reading port 50 is viewed in a plan view.

(3) The imaging lens 27 and the like are not limited to being arranged so that the imaging field AR on the plane including the reading port 50 has a trapezoidal shape slightly narrower than the peripheral edge 51, and at least a part of the peripheral edge 51. May be arranged to include.

(4) The present invention is not limited to being applied to an optical information reader that optically reads an information code such as a one-dimensional code or a two-dimensional code, and for example, not only an information code but also character information and the like are optically read. It may be applied to a readable optical information reader.

(5) The present invention is not limited to the optical information reading device 10 in which the reading process is performed in response to a predetermined operation on the trigger switch 42, but the optical information reading device in which the reading process is constantly performed for a certain period of time. May be adopted in.

10 ... Optical information reader 11 ... Housing 12 ... Reading unit 12a ... Extension end 12b ... One side surface 12c ... Lower end 13 ... Grip 27 ... Imaging lens (imaging unit)
28 ... Light receiving sensor (imaging unit)
50 ... Reading ports 60, 60a to 60e ... Guide units 61, 61a, 61b, 61d, 61e ... Guides 62, 62a, 62b, 62d, 62e ... Guides 63, 63b, 63d, 63e ... Third guide 64 ... Display screen 65 ... Design 70 ... Attachment C ... Information code C1 ... Bar code (one-dimensional code)
C2 ... QR code (two-dimensional code)
D ... Reading range for two-dimensional code S1 ... First opening area S2 ... Second opening area

Claims (7)

An imaging unit that captures the information code of both the one-dimensional code and the two-dimensional code,
A housing in which the imaging unit is housed and a reading port for introducing light from the information code into the housing is provided.
With
An optical information reading device that captures and reads the information code in the imaging unit through the reading port.
The housing is
The reading unit on which the reading port is formed and
A grip portion that is gripped when the reading port is directed toward the information code,
With
When the longitudinal direction of the grip portion is horizontal, the reading portion extends diagonally downward from the end portion on one side in the longitudinal direction of the grip portion so that the reading port is located at the extending end portion. Connected to the grip,
An optical information reading device characterized in that a guide portion for indicating a reading range for a two-dimensional code is provided on one side surface of the outer surface of the extending end portion away from the grip portion. At least a part of the extending end portion is composed of an attachment that is detachably attached to the reading portion.
The optical information reading device according to claim 1, wherein the guide is provided at a position corresponding to one side surface of the attachment. The optical information reading device according to claim 1 or 2, wherein the guide unit is configured to indicate the reading range for a two-dimensional code by color or transparency. The optical information reading device according to claim 1 or 2, wherein the guide unit is configured to indicate the reading range for the two-dimensional code by light emission by the light emitting unit or reflection by the reflecting unit. The optical information reading device according to claim 3 or 4, wherein the guide unit is configured to indicate the reading range for the two-dimensional code by displaying on a display screen. The optical information reading device according to claim 1 or 2, wherein the guide unit is configured to indicate the reading range for a two-dimensional code by a shape or a pattern. The claim is characterized in that one side surface is provided with a predetermined design including a figure, a character, a symbol, or a combination thereof indicating that the guide portion clearly indicates the reading range for the two-dimensional code. Item 3. The optical information reading device according to any one of Items 3 to 6.

Images