CN111382590A - Small-size bar code image acquisition unit - Google Patents
Small-size bar code image acquisition unit Download PDFInfo
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- CN111382590A CN111382590A CN202010260214.8A CN202010260214A CN111382590A CN 111382590 A CN111382590 A CN 111382590A CN 202010260214 A CN202010260214 A CN 202010260214A CN 111382590 A CN111382590 A CN 111382590A
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- imaging
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- light source
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10841—Particularities of the light-sensitive elements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K2207/00—Other aspects
- G06K2207/1011—Aiming
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
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- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Studio Devices (AREA)
Abstract
According to the small bar code image acquisition unit, the shell is flat, so that the thickness is reduced. 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
Technical Field
The invention relates to image acquisition equipment for bar code reading, in particular to a small 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.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a barcode device compatible with a light and thin terminal device body, and the power consumption of the main power consumption design units for illumination, aiming, etc. is low.
The technical scheme of the invention is 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 invention has the following beneficial effects:
1. according to the small bar code image acquisition unit, the shell is flat, so that the thickness is reduced. 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. According to the small bar code image acquisition unit, the illumination light source assembly is tightly attached to the imaging assembly, and meanwhile, the white area of the frame of the shell is small, so that the space can be saved, and the illumination light source can be close to the imaging center as much as possible.
3. According to the small barcode image acquisition unit, the mounting holes are formed in the two sides of the bottom of the lens opening of the shell, so that aiming, imaging and lighting cannot be interfered under the condition that the requirement of the minimum size is met.
4. According to the small-sized bar code image acquisition unit, the shape of an initial light spot can be matched with the shape of an illumination opening by adopting the square patch lamp bead, the aiming light spot is limited to be a round point by the spherical aiming condenser lens, and excessive imaging light pollution caused by shooting of an indicated bar code on the imaging component is avoided.
Drawings
FIG. 1 is an overall schematic view of a small barcode image acquisition unit according to the present invention;
FIG. 2 is a schematic plan view of a small barcode image capture unit according to the present invention;
FIG. 3 is a schematic view of a mounting hole of a small barcode image capture unit of the present invention;
FIG. 4 is an exploded view of a small barcode image capture unit of the present invention;
FIG. 5 is a schematic diagram of a small barcode image capture unit according to 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 invention is described in detail below with reference to the figures and the 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 22 and an aiming light source assembly 23 are sequentially arranged on the front surface of the circuit board 2; the imaging component 3 in a convex shape is connected to the imaging component socket 22 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 22 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 32 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 1 is aimed the circular lamp pearl 231 of use, is established lens holder 232 outside circular lamp pearl 231 and is set up the centre is the spotlight of hollow lens holder 232 front end and aims lens 233, spotlight aims lens 233 and is spherical condensing 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 description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (4)
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 an illumination light source assembly (21), an imaging assembly socket (22) and an aiming light source assembly (23) are sequentially arranged on the front surface of the circuit board (2); the imaging component (3) in a convex shape is connected to the imaging component socket (22) 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 (32) 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 LED lamp is characterized in that the LED lamp is welded on a round lamp bead (231) which is arranged on the front side of the circuit board (1) and used for aiming, a lens seat (232) which is sleeved outside the round lamp bead (231) and a light-gathering aiming lens (233) which is arranged at the front end of the lens seat (232), wherein the light-gathering aiming lens (233) is a spherical light-gathering lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010260214.8A CN111382590A (en) | 2020-04-03 | 2020-04-03 | Small-size bar code image acquisition unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010260214.8A CN111382590A (en) | 2020-04-03 | 2020-04-03 | Small-size bar code image acquisition unit |
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| Publication Number | Publication Date |
|---|---|
| CN111382590A true CN111382590A (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010260214.8A Pending CN111382590A (en) | 2020-04-03 | 2020-04-03 | Small-size bar code image acquisition unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113887256A (en) * | 2021-09-15 | 2022-01-04 | 福建新大陆自动识别技术有限公司 | Double-camera bar code reading module with heat dissipation assembly and bar code reading method |
| CN113887259A (en) * | 2021-09-15 | 2022-01-04 | 福建新大陆自动识别技术有限公司 | Bar code reading module with inductive brake assembly and reading method |
| CN114374785A (en) * | 2022-01-12 | 2022-04-19 | 深圳盈达信息科技有限公司 | Optical information acquisition device and optical information acquisition method |
-
2020
- 2020-04-03 CN CN202010260214.8A patent/CN111382590A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113887256A (en) * | 2021-09-15 | 2022-01-04 | 福建新大陆自动识别技术有限公司 | Double-camera bar code reading module with heat dissipation assembly and bar code reading method |
| CN113887259A (en) * | 2021-09-15 | 2022-01-04 | 福建新大陆自动识别技术有限公司 | Bar code reading module with inductive brake assembly and reading method |
| CN113887256B (en) * | 2021-09-15 | 2023-07-04 | 福建新大陆自动识别技术有限公司 | Double-shooting bar code reading module with heat radiation assembly |
| CN113887259B (en) * | 2021-09-15 | 2023-08-01 | 福建新大陆自动识别技术有限公司 | Bar code reading module with inductance braking component and reading method |
| CN114374785A (en) * | 2022-01-12 | 2022-04-19 | 深圳盈达信息科技有限公司 | Optical information acquisition device and optical information acquisition method |
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