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Bar code reading device

A kind of equipment and barcode technology, applied in the field of barcode reading equipment, can solve the problems of high cost and complex structure, and achieve the effect of low cost, high imaging brightness and good definition

Inactive Publication Date: 2014-04-16
SHENZHEN MINDE ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a barcode reading device with simple structure and low cost in view of the above-mentioned defects of complex structure and high cost in the prior art

Method used

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Embodiment Construction

[0017] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0018] see figure 1 , is the working principle diagram of the barcode reading device of the present invention. Please refer to figure 2 and image 3 , are respectively a top view and a perspective view of the light prompt assembly of the barcode reading device of the present invention. Such as figure 1 , figure 2 and image 3 As shown, the barcode reading device of the present invention includes a casing 300 and a light prompt assembly 200 , and the light prompt assembly 200 is arranged inside the casing 300 . The light prompt assembly 200 includes: a light source 201 and a condenser lens 202, the light source 201 is behind, and the condenser lens 202 is in front.

[0019] The condenser lens 202 is a cylindri...

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PUM

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Abstract

The invention relates to a bar code reading device which comprises a shell 300 and a light prompting assembly 200 arranged in the shell 300. The light prompting assembly 200 comprises a light source 201 and a condenser lens 202 in front of the light source 201. The condenser lens 202 is a cylindrical body with uniform thickness, wherein two opposite side surfaces of the condenser lens are a light entrance surface and a light extraction surface, the light extraction surface is a cambered surface protruding outside, and the light entrance surface is a cambered surface protruding outside or a plane. An optical signal sent by the light source 201 is focused by the condenser lens 202 to form a linear type prompting cursor 203. The light prompting assembly of the bar code reading device provided in the invention has the characteristics of simple structure and low cost, and facilitates production manufacture and installation maintenance. Simultaneously, light sent by the light source forms an image, imaging brightness is high and imaging sharpness is good.

Description

technical field [0001] The invention belongs to the field of optoelectronics, and in particular relates to a barcode reading device. Background technique [0002] The bar code was first proposed by N.T.Woodland of the United States in 1949. In recent years, with the continuous improvement and popularization of computer technology, the application of bar codes has been greatly developed. The traditional code reading method is to align the lens of the barcode reading device with the barcode to be read, and use the naked eye to determine the reading distance of the barcode according to the illumination of the light source in the barcode reading device. Due to the different sizes of barcodes and the different lens distances between barcodes and barcode reading equipment, it is often impossible to effectively ensure the optimal reading distance and position during reading. [0003] In order to solve the above problems, most of the methods of light prompting are currently used, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/10F21V5/04
Inventor 易仰卿许文焕
Owner SHENZHEN MINDE ELECTRONICS TECH