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Scanning device capable of reducing the influence of illuminating light reflected from the scanning window on scanning codes

A scanning device and scanning window technology, applied in electromagnetic radiation induction, instruments, induction recording carriers, etc., can solve problems such as noise and adverse effects of barcode scanning, and achieve the effect of avoiding noise signals and adverse effects

Active Publication Date: 2020-09-01
WUXI IDATATECHNOLOGYCOMPANYLTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, transparent materials are easy to directly reflect the light from the light source to the lens head, forming noise, which will adversely affect the scanning of barcodes

Method used

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  • Scanning device capable of reducing the influence of illuminating light reflected from the scanning window on scanning codes
  • Scanning device capable of reducing the influence of illuminating light reflected from the scanning window on scanning codes
  • Scanning device capable of reducing the influence of illuminating light reflected from the scanning window on scanning codes

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Embodiment Construction

[0036] In order to facilitate a better understanding of the purpose, structure, features, and effects of the present invention, the present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0037] like Figure 1 to Figure 7 Shown is the first embodiment of the scanning device 100 of the present invention that can reduce the influence of the illumination light reflected by the scanning window on scanning codes. The scanning device 100 is a fixed scanner with a housing 1 and is housed in the A scanning engine 3 of the casing 1 is described.

[0038] like figure 1 and figure 2 As shown, the front end of the housing 1 has a scanning window 11, and a piece of high-transparency sheet 2 seals the scanning window 11. The high-transparency sheet 2 is high-transparency glass, and its inward surface forms a reflective surface 21 . In other embodiments (not shown), the high-transparency sheet 2 can be a suitable material...

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Abstract

The invention provides a scanning device capable of reducing the influence of illumination light reflected by the scanning window on code scanning, comprising: a housing with a scanning window, a high-transparency sheet covering the scanning window, and the high-transparency sheet A reflective surface is formed on the inner side; a scanning engine is accommodated in the housing and close to the reflective surface, and one end surface of the scan engine is provided with a camera and a supplementary light all facing the reflective surface, The camera is used to collect images, and the supplementary light is used for illumination during image collection; wherein: the distance between the camera, the supplementary light and the high-transparency sheet is set so that the The light emitted by the supplementary light within the light emitting angle deviates from the field of view of the camera after being reflected by the reflective surface, so as to avoid generation of noise signals, thereby avoiding adverse effects on barcode scanning.

Description

technical field [0001] The invention relates to a scanning device, in particular to a scanning device capable of reducing the influence of illuminating light reflected by a scanning window on code scanning. Background technique: [0002] A barcode is a graphic identifier that arranges multiple black bars and blanks with different widths according to certain coding rules to express a set of information. The scanning principle of the scanner is: the color of the object is determined by the type of light it reflects, the blank barcode can reflect visible light of various wavelengths, and the black bar absorbs visible light of various wavelengths, so when the light emitted by the scanner light source After being reflected on the barcode, the reflected light is irradiated on the photoelectric converter inside the scanner, and the photoelectric converter converts the reflected light signal into a corresponding electrical signal according to the strength of the different reflected ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/14G06K7/10
CPCG06K7/10584G06K7/1413G06K7/146
Inventor 王冬生魏江涛张颂来鲍俊敏王祯玺
Owner WUXI IDATATECHNOLOGYCOMPANYLTD
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