CN111931540B - A code scanning device for improving code scanning lighting efficiency - Google Patents
A code scanning device for improving code scanning lighting efficiency Download PDFInfo
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- CN111931540B CN111931540B CN202010971749.6A CN202010971749A CN111931540B CN 111931540 B CN111931540 B CN 111931540B CN 202010971749 A CN202010971749 A CN 202010971749A CN 111931540 B CN111931540 B CN 111931540B
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- lighting
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- barcode scanning
- transparent window
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- 238000003384 imaging method Methods 0.000 claims description 17
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000005357 flat glass Substances 0.000 abstract description 4
- 230000002411 adverse Effects 0.000 abstract description 3
- 230000000638 stimulation Effects 0.000 abstract 1
- 238000005286 illumination Methods 0.000 description 53
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Classifications
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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
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/1417—2D bar codes
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
本发明提供一种提高扫码照明效率的扫码装置，包括外壳、透明视窗、电路主板、抛物反射板、椭圆反射板和照明模块，外壳包括底板、侧板和遮罩，抛物反射板呈抛物线弧形设于侧板与遮罩之间，椭圆反射板呈椭圆弧形设于遮罩与底板之间，照明模块设于电路主板上，且照明模块同时处于抛物反射板的抛物线焦点上以及椭圆反射板的较近的椭圆焦点上。本发明对抛物反射板、椭圆反射板以及照明模块的结构进行合理设计，使得扫码时透明视窗区域的照明光线更加均匀，避免透明视窗玻璃反射对扫码成像质量的干扰和不良影响，提高解码成功率；同时，合理设计了照明光线的出射角度，还可以降低照明光线对操作人员造成的视觉刺激，符合人体工学要求。
The present invention provides a code scanning device for improving the lighting efficiency of code scanning, comprising a housing, a transparent window, a circuit main board, a parabolic reflector, an elliptical reflector and a lighting module, wherein the housing comprises a bottom plate, a side plate and a shield, the parabolic reflector is arranged between the side plate and the shield in a parabolic arc shape, the elliptical reflector is arranged between the shield and the bottom plate in an elliptical arc shape, the lighting module is arranged on the circuit main board, and the lighting module is simultaneously located at the parabolic focus of the parabolic reflector and at the closer elliptical focus of the elliptical reflector. The present invention reasonably designs the structures of the parabolic reflector, the elliptical reflector and the lighting module, so that the lighting light in the transparent window area is more uniform when scanning the code, avoiding the interference and adverse effects of the reflection of the transparent window glass on the scanning image quality, and improving the decoding success rate; at the same time, the emission angle of the lighting light is reasonably designed, and the visual stimulation caused by the lighting light to the operator can also be reduced, which meets the ergonomic requirements.
Description
Technical Field
The invention relates to the field of code scanning equipment, in particular to a code scanning device for improving code scanning illumination efficiency.
Background
With the rise of mobile phone two-dimension code payment, a code scanning box corresponding to the mobile phone two-dimension code payment is generated. The mobile phone two-dimension code is displayed on the active luminous screen, so that the code scanner does not need to provide additional illumination, on the other hand, the dimension of the two-dimension code displayed on the mobile phone screen is obviously larger than that of the printed two-dimension code because of the enlargement of the mobile phone screen, and the design of the code scanning box has the characteristics different from the traditional code scanner, namely, the code scanning window is larger, and the appearance is compact and light and thin. However, in order to ensure that the scanner is compatible with reading barcodes printed on non-luminescent materials, it is necessary that the scanner provide additional illumination. The common code scanner directly sets up lighting module in the both sides of scanning the sign indicating number box, when sweeping the sign indicating number, because the reflection effect of sign indicating number window glass to illumination light is swept, can lead to appearing unexpected facula when imaging, influence decoding success rate, simultaneously, illumination light can also cause visual stimulus to operating personnel, and user's use experience is relatively poor.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a code scanning device for improving the code scanning illumination efficiency, which improves the illumination uniformity of a code scanning window area, reduces the visual stimulus to operators through the design of the light emergent angle and meets the requirement of ergonomics.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The code scanning device capable of improving code scanning illumination efficiency comprises a shell, a transparent window, a circuit main board, a parabolic reflecting plate, an elliptic reflecting plate and an illumination module, wherein the shell comprises a bottom plate, side plates and a shade, an accommodating space is formed in the bottom plate, the side plates and the transparent window, the shade is arranged in the accommodating space in a stepped concave mode, two sides of the shade are connected with the side plates, illumination light outlet windows are formed in two side portions of the shade, the circuit main board is arranged on the bottom plate, the parabolic reflecting plate is arranged between the side plates and the shade in a parabolic arc mode, the upper end of the parabolic reflecting plate is connected with the upper end of the side plates, the lower end of the parabolic reflecting plate is connected with the bottom plate, the elliptic reflecting plate is arranged between the shade and the bottom plate in an elliptic arc mode, the upper end of the elliptic reflecting plate is connected with the shade, the lower end of the elliptic reflecting plate is arranged between the bottom plate, the illumination module is arranged on the circuit, and the illumination module is located on a focus of the parabolic reflecting plate and the parabolic reflecting plate.
Preferably, the transparent window is parallel to the bottom plate, and the transparent window and the shell form a rectangular box body structure.
Preferably, an included angle between the parabolic symmetry axis of the parabolic reflector and the transparent window is 20-60 degrees.
Preferably, the included angle between the illumination light-emitting window and the transparent window is 60-90 degrees.
Preferably, the lighting module is an LED lighting unit.
Preferably, both sides of the code scanning device are provided with the parabolic reflecting plate, the elliptical reflecting plate and the lighting module.
Preferably, the circuit board further comprises an imaging lens, wherein the imaging lens is arranged in the middle of the circuit board and corresponds to the bottom of the mask, a groove is formed in the bottom of the mask, and the imaging lens enters the groove through an opening in the bottom of the mask.
Preferably, the optical axis of the imaging lens is perpendicular to the transparent window.
Compared with the prior art, the code scanning device has the beneficial effects that the structure of the parabolic reflecting plate, the elliptical reflecting plate and the lighting module is reasonably designed, so that the lighting rays in a transparent window area are more uniform during code scanning, the interference and adverse effect of the reflection of the transparent window glass on the imaging quality of the code scanning are avoided, the decoding success rate is improved, meanwhile, the emergent angle of the lighting rays is reasonably designed, the visual stimulus of the lighting rays to operators is reduced, and the ergonomic requirement is met.
Drawings
Fig. 1 is a perspective view of a code scanning device for improving the code scanning illumination efficiency according to embodiment 1 of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of a code scanning device for improving the code scanning illumination efficiency according to embodiment 1 of the present invention;
FIG. 3 is a simplified model diagram of a code scanning device for improving the code scanning illumination efficiency according to embodiment 1 of the present invention;
FIG. 4 is a graph showing the reflected light of the parabolic reflector of FIG. 3;
Fig. 5 is a graph showing the reflected light ray of the elliptical reflecting plate in fig. 3.
In the figure, a 100-code scanning device, a 11-base plate, a 12-side plate, a 13-shade, a 14-illumination light-emitting window, a 15-groove, a 20-transparent window, a 30-circuit main board, a 40-parabolic reflecting plate, a 50-elliptic reflecting plate, a 60-illumination module and a 70-imaging lens.
Detailed Description
For a further understanding of the objects, construction, features, and functions of the invention, reference should be made to the following detailed description of the preferred embodiments.
Referring to fig. 1 and fig. 2 in combination, fig. 1 is a perspective view of a code scanning device for improving the code scanning illumination efficiency of embodiment 1 of the present invention, fig. 2 is a schematic cross-sectional structure diagram of the code scanning device for improving the code scanning illumination efficiency of embodiment 1 of the present invention, and the code scanning device 100 for improving the code scanning illumination efficiency of embodiment 1 of the present invention includes a housing, a transparent window 20, a circuit board 30, a parabolic reflector 40, an elliptical reflector 50 and an illumination module 60, wherein the transparent window 20 and the housing form a rectangular box structure, the transparent window 20 is made of transparent glass, and the transparent window 20 faces a bar code to be scanned in use.
The shell includes bottom plate 11, curb plate 12 and shade 13, and transparent window 20 is on a parallel with bottom plate 11, and bottom plate 11, curb plate 12 and transparent window 20's inside forms the accommodation space, and shade 13 is ladder indent and locates in the accommodation space, and the both sides of shade 13 are connected with curb plate 12 and the both sides portion of shade 13 is equipped with illumination light-emitting window 14.
Referring to fig. 2, the circuit board 30 is disposed on the bottom plate 11, the circuit board 30 is disposed between the mask 13 and the bottom plate 11, the circuit board 30 is a multi-layer integrated circuit board, the parabolic reflector 40 is disposed between the side plate 12 and the mask 13 in a parabolic arc shape, the upper end of the parabolic reflector 40 is connected to the upper end of the side plate 12, the lower end of the parabolic reflector 40 is connected to the bottom plate 11, the elliptical reflector 50 is disposed between the mask 13 and the bottom plate 11 in an elliptical arc shape, the upper end of the elliptical reflector 50 is connected to the mask 13, and the lower end of the elliptical reflector 50 is disposed between the bottom plate 11, the lighting module 60 is disposed on the circuit board 30, and the lighting module 60 is simultaneously disposed on the parabolic focus of the parabolic reflector 40 and the nearer elliptical focus of the elliptical reflector 50. Preferably, the illumination module 60 is an LED lighting unit. The invention reasonably designs the illumination structure of the code scanning device, and the illumination light rays emitted by the illumination module 60 are uniformly emitted to the illumination light-emitting window 14 and the transparent window 20 after being reflected by the parabolic reflecting plate 40 and the elliptical reflecting plate 50, so that the influence of the illumination light rays reflected by the transparent window 20 on the imaging quality is reduced, and meanwhile, the visual stimulus of the illumination light rays to operators can be reduced, and the requirements of ergonomics are met.
Referring to fig. 3 to 5 in combination, fig. 3 is a simplified model diagram of a code scanning device for improving the code scanning illumination efficiency according to embodiment 1 of the present invention, fig. 4 is a reflected light ray trend diagram of the parabolic reflector in fig. 3, and fig. 5 is a reflected light ray trend diagram of the elliptical reflector in fig. 3. In fig. 3, the broken line indicates the complete track of the parabolic reflector 40 and the elliptical reflector 50, the illumination light emitted by the illumination module 60 is emitted to the parabolic reflector 40, the parabolic reflector 40 reflects the illumination light to the illumination light outlet window 14 and then emits to the transparent window 20 for illuminating the bar code on the non-luminous material, and since the illumination module 60 is arranged on the parabolic focus of the parabolic reflector 40, according to the characteristics of the parabola, the illumination light reflected by the parabolic reflector 40 is all parallel to the symmetry axis of the parabola, so that the illumination uniformity of the area of the transparent window 20 is improved, meanwhile, the illumination light emitted by the illumination module 60 emits to the elliptical reflector 50, emits to the parabolic reflector 40 after being reflected by the elliptical reflector 50, and emits to the illumination light outlet window 14 and the transparent window 20 uniformly after being reflected by the parabolic reflector 40 for illuminating the bar code on the non-luminous material.
In the preferred embodiment of the invention, the included angle between the parabolic symmetry axis of the parabolic reflecting plate 40 and the transparent window 20 is 20-40 degrees, the reflected illumination light performs low-angle illumination on the area of the transparent window 20 to prevent flare, the included angle between the illumination light-emitting window 14 and the transparent window 20 is 70-90 degrees, and the light-emitting angle is reasonably designed to avoid influencing the code scanning imaging quality.
In the preferred embodiment of the present invention, the parabolic reflecting plates 40, the elliptical reflecting plates 50 and the illumination modules 60 are disposed on two sides of the code scanning device 100, and the parabolic reflecting plates 40, the elliptical reflecting plates 50 and the illumination modules 60 are symmetrically disposed on two sides, so as to improve the uniformity of illumination in the area of the transparent window 20.
Referring to fig. 2, the code scanning device 100 of the present invention further includes an imaging lens 70 for scanning a bar code, wherein the imaging lens 70 is disposed in the middle of the circuit board 30 and corresponds to the bottom of the mask 13, the bottom of the mask 13 is provided with a groove 15, and the imaging lens 70 enters the groove 15 through an opening at the bottom of the mask 13. Further, the optical axis of the imaging lens 70 is perpendicular to the transparent window 20.
In summary, the code scanning device for improving the code scanning illumination efficiency provided by the invention reasonably designs the structures of the parabolic reflecting plate, the elliptical reflecting plate and the illumination module, so that the illumination light of a transparent window area is more uniform during code scanning, the interference and adverse effect of the reflection of the transparent window glass on the code scanning imaging quality are avoided, the decoding success rate is improved, and meanwhile, the emergent angle of the illumination light is reasonably designed, the visual stimulus of the illumination light to an operator is reduced, and the ergonomic requirement is met.
The invention has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010971749.6A CN111931540B (en) | 2020-09-16 | 2020-09-16 | A code scanning device for improving code scanning lighting efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010971749.6A CN111931540B (en) | 2020-09-16 | 2020-09-16 | A code scanning device for improving code scanning lighting efficiency |
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| Publication Number | Publication Date |
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| CN111931540A CN111931540A (en) | 2020-11-13 |
| CN111931540B true CN111931540B (en) | 2024-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010971749.6A Active CN111931540B (en) | 2020-09-16 | 2020-09-16 | A code scanning device for improving code scanning lighting efficiency |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773325A (en) * | 2004-11-12 | 2006-05-17 | 菱光科技股份有限公司 | Light collecting device for image scanning unit |
| CN107577976A (en) * | 2017-09-18 | 2018-01-12 | 苏州斯普锐智能系统有限公司 | The fixed code reader of light filling type |
| CN107895133A (en) * | 2017-12-08 | 2018-04-10 | 苏州斯普锐智能系统有限公司 | A kind of desktop imaging type bar code scan equipment |
| CN212276421U (en) * | 2020-09-16 | 2021-01-01 | 苏州斯普锐智能系统有限公司 | Improve sweep a yard device of sweeping of a yard lighting efficiency |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6612496B1 (en) * | 2000-03-16 | 2003-09-02 | Symbol Technologies, Inc. | Scan module |
| CN102598325B (en) * | 2010-02-05 | 2015-06-03 | 株式会社东芝 | Illumination device and image-reading device provided with illumination device |
| CN111666779B (en) * | 2018-10-31 | 2023-06-23 | 深圳盈达信息科技有限公司 | Scanning device capable of reducing influence of illumination light reflected by scanning window on scanning code |
-
2020
- 2020-09-16 CN CN202010971749.6A patent/CN111931540B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773325A (en) * | 2004-11-12 | 2006-05-17 | 菱光科技股份有限公司 | Light collecting device for image scanning unit |
| CN107577976A (en) * | 2017-09-18 | 2018-01-12 | 苏州斯普锐智能系统有限公司 | The fixed code reader of light filling type |
| CN107895133A (en) * | 2017-12-08 | 2018-04-10 | 苏州斯普锐智能系统有限公司 | A kind of desktop imaging type bar code scan equipment |
| CN212276421U (en) * | 2020-09-16 | 2021-01-01 | 苏州斯普锐智能系统有限公司 | Improve sweep a yard device of sweeping of a yard lighting efficiency |
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| CN111931540A (en) | 2020-11-13 |
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Country or region after: China Address after: 215123 building 57, Dongjing industrial square, No.2, Dongfu Road, Suzhou Industrial Park, Suzhou City, Jiangsu Province Applicant after: Suzhou spree Intelligent System Co.,Ltd. Address before: 215123 building 57, Dongjing industrial square, No.2, Dongfu Road, Suzhou Industrial Park, Suzhou City, Jiangsu Province Applicant before: SUZHOU SIPURUI INTELLIGENT SYSTEM Co.,Ltd. Country or region before: China |
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