CN213276653U

CN213276653U - Small-size bar code image acquisition unit

Info

Publication number: CN213276653U
Application number: CN202020478179.2U
Authority: CN
Inventors: 吴志宇; 苏满华; 陈友清; 林小章
Original assignee: Fujian Newland Auto ID Technology Co Ltd
Current assignee: Fujian Newland Auto ID Technology Co Ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2021-05-25
Anticipated expiration: 2030-04-03

Abstract

A small-size bar code image acquisition unit, the platykurtic is set to the casing, has reduced thickness. The shell is provided with an illuminating window which deflects towards the direction of the opening of the lens, so that an illuminating light source can be guided to the front of the imaging component, the imaging of the bar code in the bar code image is facilitated, the illuminating requirement of bar code image acquisition can be met without arranging an independent illuminating lens, and the size of an illuminating area is reduced. The opening of the lens is also provided with a step-shaped circular concave which can resist diffuse reflection of more stray light, so that when the lens collects a bar code image, the imaging is purer. The casing rear end is provided with the circuit board, and illumination light source subassembly and aim light source subassembly setting on the circuit board, and imaging component installs on the circuit board with the form of pegging graft, only needs the design of a set of circuit board, reduces the installation size demand and the assembly degree of difficulty. The imaging assembly inserting design can flexibly replace the imaging assemblies with different specifications.

Description

Small-size bar code image acquisition unit

Technical Field

The utility model relates to an image acquisition equipment of bar code recognition, concretely relates to small-size bar code image acquisition unit.

Background

With the blowout type spreading of mobile payment scenes of cloud flash payment, WeChat payment and Payment treasure payment and the large-scale use of the bar code in logistics and government affair management, the use of the traditional card is increased to code use. More and more devices such as gate machines and cash register terminals need to be added with the barcode reading and decoding functions. There are also some wearable devices that also have bar code scanning requirements. Under the trend of miniaturization and thinning of terminals, barcode devices are developing toward thinning and low power consumption. As a main accessory for scanning barcodes, the size and power consumption tolerance of barcode image capture units are also substantially changing.

The existing bar code reading module has relatively large volume, and more components and parts are arranged on the hardware circuit design, so that the power consumption is also high. The illumination and aiming designs usually pursue high brightness and personalized aiming indication, which causes the power consumption of the light source device to be larger, and the light source device is not suitable for light and thin intelligent equipment. The existing separated bar code decoding device mainly has the core that decoding cores (namely a processor based on MIPS and ARM architectures needs a bar code decoding program stored in a storage module to be matched with the processor to realize a bar code decoding function, and a decoding chip with a programmable logic device and hardware bar code decoding capability) are arranged on a main circuit board, and then an image acquisition head (device) is connected through a flexible cable.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a be suitable for with terminal equipment fuselage compatible bar code equipment of frivolous type, the consumption of main consumption design element such as illumination, sight is lower.

The technical scheme of the utility model as follows:

a miniature barcode image capture unit comprising:

the size ratio of the horizontal direction to the vertical direction is more than 2:1, and the front end of the shell is provided with a lighting opening, a lens opening and a sighting opening which penetrate through the front end and the rear end of the shell in sequence in the horizontal direction; the side edge of the illumination opening close to the lens opening horizontally deflects and extends from the rear end to the front end of the shell towards the lens opening, so that the opening area of the front end of the illumination opening is larger than that of the rear end; the lens opening is provided with a stepped circular indent with gradually reduced inner radius at the front end of the shell;

the circuit board at least comprises a PCB board, the circuit board is arranged at the rear end of the shell, and an illumination light source assembly, an imaging assembly socket and an aiming light source assembly are sequentially arranged on the front side of the circuit board; the imaging component plug socket is connected with a convex imaging component in a pluggable manner; the illumination light source assembly is disposed within the illumination opening, and the aiming light source assembly is disposed within the aiming opening; the circuit board is provided with a communication interface for transmitting image data generated by the imaging assembly and receiving configuration instructions for the illumination light source assembly, the aiming light source assembly and the imaging assembly;

an imaging assembly, further comprising: the rear end of the hollow shell is square and is forwards reduced to be cylindrical, the front end of the hollow shell is provided with an imaging lens, and the rear end face of the image sensor is also provided with an imaging component plug-in which is matched with the imaging component socket for use;

the shell is provided with a concave hollow area for fitting and installing the imaging assembly, so that an imaging lens of the imaging assembly can be arranged in the lens opening in a fitting mode, and the height difference between the shell and the imaging assembly is smaller than 2 mm.

Preferably, the total length of the circuit board is less than 22 mm; the horizontal distance between the center of the illumination light source assembly and the center of the imaging assembly on the surface of the circuit board is less than 10mm, the horizontal distance between the center of the aiming light source assembly and the center of the imaging assembly is less than 10mm, and the distance between the illumination light source assembly and the side edge of the shell is less than 1.5 mm.

Preferably, two mounting holes are further provided at the lower end of the housing, a first mounting hole and a second mounting hole, the first mounting hole is provided at a region between the illumination opening and the lens opening and does not interfere with illumination and imaging, and the second mounting hole is provided at a region between the aiming opening and the lens opening and does not interfere with aiming and imaging.

Preferably, the illumination light source component is a square patch lamp bead; the aiming light source assembly further includes: the welding is in the positive confession of circuit board is aimed circular lamp pearl, the cover and is established lens holder outside circular lamp pearl and setting are in the spotlight of lens holder front end aims the lens, spotlight aims the lens and is spherical condensing lens.

The utility model discloses following beneficial effect has:

1. a small-size bar code image acquisition unit, the platykurtic is set to the casing, has reduced thickness. The shell is provided with an illuminating window which deflects towards the direction of the opening of the lens, so that an illuminating light source can be guided to the front of the imaging component, the imaging of the bar code in the bar code image is facilitated, the illuminating requirement of bar code image acquisition can be met without arranging an independent illuminating lens, and the size of an illuminating area is reduced. The opening of the lens is also provided with a step-shaped circular concave which can resist diffuse reflection of more stray light, so that when the lens collects a bar code image, the imaging is purer. The casing rear end is provided with the circuit board, and illumination light source subassembly and aim light source subassembly setting on the circuit board, and imaging component installs on the circuit board with the form of pegging graft, only needs the design of a set of circuit board, reduces the installation size demand and the assembly degree of difficulty. The imaging assembly inserting design can flexibly replace the imaging assemblies with different specifications. The mounting area of the imaging assembly on the shell is hollow, and the thickness of the shell is close to the height of the imaging assembly after mounting.

2. A small-size bar code image acquisition unit, lighting light source subassembly hug closely in formation of image subassembly design, the casing frame stays white region less simultaneously, can practice thrift the space, can make light source draw close toward the formation of image center as far as again.

3. A small-size bar code image acquisition unit, the mounting hole sets up in the both sides of the camera lens opening bottom of casing, under the condition that satisfies minimum volume demand, can not interfere and aim and formation of image and illumination.

4. A small-size bar code image acquisition unit, adopt square paster lamp pearl to make initial facula shape just can laminate illumination open-ended shape, the spotlight lens that aims through the sphere shape will aim facula limit and contract into a dot, can not clap the formation of image subassembly and get the too much formation of image light pollution that causes by the instruction bar code.

Drawings

FIG. 1 is a schematic view of a small barcode image capture unit according to the present invention;

FIG. 2 is a schematic plan view of a small barcode image capture unit of the present invention;

FIG. 3 is a schematic view of a mounting hole of a small barcode image capture unit according to the present invention;

FIG. 4 is an exploded view of a small barcode image capture unit according to the present invention;

fig. 5 is a schematic view of a small barcode image collecting unit of the present invention.

The reference signs are: 1-a shell; 2-a circuit board; 3-an imaging component; 11-an illumination opening; 12-lens opening; 13-an aiming opening; 21-an illumination light source assembly; 23-aiming the light source assembly; 231-a round lamp bead; 232-lens holder; 233-a condenser sighting lens; 31-a hollow shell; 32-imaging lens.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

A miniature barcode image capture unit, as shown in fig. 1-5, comprising:

the shell 1 can be made of non-light-transmitting metal, alloy, PC, ABS and the like. The size ratio of the horizontal direction to the vertical direction is more than 2:1, and the front end of the shell 1 is provided with an illumination opening 11, a lens opening 12 and a sighting opening 13 which penetrate through the front end and the rear end of the shell 1 in sequence in the horizontal direction. The side edge of the illumination opening 11 close to the lens opening 12 horizontally deflects and extends from the rear end to the front end of the shell 1 towards the lens opening 12, and the deflection angle is between 3 and 20 degrees. So that the front opening area of the illumination opening 12 is larger than the rear opening area; the lens opening 12 is provided with a stepped circular recess having a radius gradually decreasing inward at the front end of the housing 1.

The circuit board 2 at least comprises a PCB board, the circuit board is installed at the rear end of the shell 1, and an illumination light source assembly 21, an imaging assembly socket and an aiming light source assembly 23 are sequentially arranged on the front side of the circuit board 2; the imaging component 3 in a convex shape is connected at the imaging component socket in a pluggable manner; the illumination light source assembly 21 is disposed in the illumination opening 11, and the aiming light source assembly 23 is disposed in the aiming opening 13; the circuit board 2 is provided with a communication interface via a flexible data line for transmitting image data generated by the imaging assembly 3 and for receiving configuration commands for the illumination light source assembly 21, the aiming light source assembly 23 and the imaging assembly 3. In order to prevent the image sensor from being interfered by external signals, a metal shielding layer is disposed behind the circuit board 2, which can shield irrelevant signals and also can help the aiming light source assembly 23, the imaging assembly 3 and the aiming light source assembly 23 to dissipate heat.

The imaging assembly 3, further comprising: the rear end of the image sensor at least covers the light-tight convex hollow shell 31 of the light-sensitive surface of the image sensor, the rear end of the hollow shell 31 close to the image sensor is square so as to be attached to the image sensor, and the hollow shell is forwards reduced to be cylindrical so as to be attached to the imaging lens. The front end of the hollow shell is provided with an imaging lens 32, and the rear end face of the image sensor is also provided with an imaging component plug-in which is matched with the imaging component socket for use.

The shell 1 is provided with a concave hollow area at the rear end and along the direction extending from the front end so as to be attached to the imaging assembly 3, so that the imaging lens 32 of the imaging assembly 3 can be attached to the inside of the lens opening 12, and the height difference between the shell 1 and the imaging assembly is less than 2 mm.

The total length of the circuit board 2 is less than 22 mm; the horizontal distance between the center of the illumination light source assembly 21 and the center of the imaging assembly 3 on the surface of the circuit board 2 is less than 10mm, the horizontal distance between the center of the aiming light source assembly 23 and the center of the imaging assembly 3 is less than 10mm, and the distance between the illumination light source assembly 21 and the side edge of the shell 1 is less than 1.5 mm.

Two mounting hole positions matched with other equipment are further arranged at the lower end of the shell 1, namely a first mounting hole 71 and a second mounting hole 72, the first mounting hole 71 is arranged in the area between the illumination opening 11 and the lens opening 12, and a mounting hole for screwing in a screw is arranged on a blank area between the illumination opening 11 and the lens opening 12 in the shell 1 (the blank area refers to the area on the shell without any functions of illumination, aiming and imaging, and the mounting hole does not interfere with illumination and imaging. The second mounting hole 72 is provided in a blank area of the housing 1 between the aiming opening 13 and the lens opening 12, and does not interfere with aiming and imaging.

The illumination light source component 21 is a square patch lamp bead. Because the facula of illumination adopts squarely, and the effect is better, so preferably adopt square paster lamp pearl. The aiming light source assembly 23 further comprises: the welding is in the positive confession of circuit board 2 aims the circular lamp pearl 231 of use, the cover establishes the lens holder 232 outside circular lamp pearl 231 and sets up the centre is the spotlight of hollow lens holder 232 front end and aims lens 233, spotlight aims lens 233 and is spherical spotlight lens, aims the facula pattern and as a dot, in the centre of illumination facula, consequently adopts circular lamp pearl 231 better effect.

The rear end of the shell 1 is provided with at least two positioning bulges which correspond to the positioning holes arranged on the circuit board 2, and the circuit board 2 is arranged at the rear end of the shell 1 through the positioning bulges and is fixed at the rear end of the shell 1 in a dispensing manner.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A small barcode image capture unit, comprising:

the device comprises a shell (1), wherein the size ratio of the horizontal direction to the vertical direction is greater than 2:1, and a lighting opening (11), a lens opening (12) and a sighting opening (13) which penetrate through the front end and the rear end of the shell (1) are sequentially formed in the front end of the shell (1) in the horizontal direction; the side edge of the illumination opening (11) close to the lens opening (12) horizontally deflects from the rear end to the front end of the shell (1) towards the lens opening (12) and extends, so that the opening area of the front end of the illumination opening (11) is larger than that of the rear end; the lens opening (12) is provided with a stepped circular inner recess with the inner radius gradually reduced at the front end of the shell (1);

the circuit board (2) at least comprises a PCB, the circuit board is installed at the rear end of the shell (1), and a lighting light source assembly (21), an imaging assembly socket and an aiming light source assembly (23) are sequentially arranged on the front side of the circuit board (2); the imaging component (3) in a convex shape is connected at the imaging component socket in a pluggable manner; the illumination light source assembly (21) is disposed within the illumination opening (11), and the aiming light source assembly (23) is disposed within the aiming opening (13); the circuit board (2) is provided with a communication interface for transmitting image data generated by the imaging assembly (3) and receiving configuration instructions for the illumination light source assembly (21), the aiming light source assembly (23) and the imaging assembly (3);

an imaging assembly (3), further comprising: the rear end of the image sensor at least covers an opaque convex hollow shell (31) of a photosensitive surface of the image sensor, the rear end of the hollow shell, which is close to the image sensor, is square and is reduced forwards to be cylindrical, the front end of the hollow shell is provided with an imaging lens (32), and the rear end face of the image sensor is also provided with an imaging component plug-in which is matched with the imaging component socket for use;

the shell (1) is provided with a concave hollow area for fitting and installing the imaging assembly (3), so that an imaging lens (32) of the imaging assembly (3) can be fittingly arranged in the lens opening (12), and the height difference between the shell (1) and the imaging assembly is smaller than 2 mm.

2. The miniature barcode image capture unit of claim 1, wherein the total length of said circuit board (2) is less than 22 mm; the horizontal distance between the center of the illumination light source assembly (21) and the center of the imaging assembly (3) on the surface of the circuit board (2) is less than 10mm, the horizontal distance between the center of the aiming light source assembly (23) and the center of the imaging assembly (3) is less than 10mm, and the distance between the illumination light source assembly (21) and the side edge of the shell (1) is less than 1.5 mm.

3. The miniature barcode image capture unit of claim 1 or 2, wherein: two mounting hole positions, namely a first mounting hole (71) and a second mounting hole (72), are further arranged at the lower end of the shell (1), the first mounting hole (71) is arranged in the area between the illumination opening (11) and the lens opening (12) and does not interfere with illumination and imaging, and the second mounting hole (72) is arranged in the area between the aiming opening (13) and the lens opening (12) and does not interfere with aiming and imaging.

4. The miniature barcode image capture unit of claim 1 or 2, wherein: the illumination light source component (21) is a square patch lamp bead; the aiming light source assembly (23) further comprises: the welding is in circular lamp pearl (231), the cover of the positive confession of circuit board (2) of aiming the use are established lens seat (232) outside circular lamp pearl (231) and are set up and be in spotlight of lens seat (232) front end aims lens (233), spotlight aims lens (233) and is spherical spotlight lens.