CN201004237Y

CN201004237Y - Structure of bar code reading device

Info

Publication number: CN201004237Y
Application number: CNU2006200773142U
Authority: CN
Inventors: 孙亚力; 刘荣生; 刘继军
Original assignee: Fujian New Continent Automatic Recognition Technology Coltd
Current assignee: Fujian New Continent Automatic Recognition Technology Coltd; Fujian Newland Auto ID Technology Co Ltd
Priority date: 2006-09-15
Filing date: 2006-09-15
Publication date: 2008-01-09
Anticipated expiration: 2016-09-15

Abstract

The utility model relates to a bar code recognizing and reading structure, including a shell, an imaging system subassembly and an output port. The imaging system subassembly is provided with a camera and a light sensing unit. A reflection lens is arranged between the bar code and the imaging system subassembly, with the vertical axial line of the bar code and the axial line of the camera forming an angle Theta which is between 80 degrees and 100 degrees, and with the axial lines of the reflection lens and the camera forming and angle Alpha which is between 40 degrees and 50 degrees. Thanks to the above structure, the light path of the image of the bar code is changed by the reflection lens and cast on the camera of the imaging system subassembly, and undergoes reflection on the camera and decoding on the light sensing unit; hereby, the distance between the imaging system subassembly and the bar code on the cell phone screen is shortened and the aim to shorten the height of the bar code recognizing and reading device is achieved.

Description

The structure of bar code recognizing apparatus

Technical field

The utility model relates to bar code recognizing apparatus, relate in particular to for some and leave bar code on the particular medium in, need the special bar code recognizing apparatus of design to distinguish, for example at being presented at bar code on the mobile phone screen, design the structure of the bar code recognizing apparatus that a fixed bar code recognizing apparatus distinguishes.

Background technology

According to traditional yard bar code recognizing apparatus of index path design of reading, be illustrated in fig. 1 shown below, must maintain a certain distance L between the camera lens 21 of optical imaging system assembly 2 and the bar code 4 on the mobile phone screen, just can reach and distinguish effect preferably, therefore, the height H 1 of bar code recognizing apparatus will design than higher, could satisfy the demand of reading sign indicating number.

Summary of the invention

The utility model purpose provides a kind of structure that shortens the bar code recognizing apparatus of bar code recognizing apparatus height.

The utility model is achieved through the following technical solutions, bar code recognizing apparatus comprises shell, imaging system assembly and output interface, the imaging system assembly is provided with camera lens and sensor devices, wherein at bar code and the imaging system inter-module distinguished, insert a reflecting optics, the vertical central lines of bar code and the axial line of camera lens form angle theta, and this angle theta scope is 80 °～100 °, the axial line of reflecting optics and camera lens forms angle α, and this angle α scope is 40 °～50 °.

The utility model adopts above structure, the bar code image of being distinguished changes light path by catoptron earlier, reflex on the camera lens in the imaging system assembly, be refracted to through camera lens again and carry out decoding processing on the sensor devices, thereby shorten the distance between the quilt recognition bar code on imaging system assembly and the mobile phone screen, reach the purpose that shortens the bar code reader height.

Description of drawings

Now in conjunction with the accompanying drawings the utility model is further elaborated:

The light path synoptic diagram of the existing bar code recognizing apparatus of Fig. 1;

Fig. 2 is a light path synoptic diagram of the present utility model;

Fig. 3 is the physical distance figure of one of the utility model embodiment;

Fig. 4 is two the physical distance figure of the utility model embodiment.

Embodiment

Shown in Fig. 2,3,4, the utility model bar code recognizing apparatus comprises shell 1, imaging system assembly 2 and output interface 3, imaging system assembly 2 is provided with camera lens 21 and sensor devices 22, wherein by 2 of the bar code 4 distinguished and imaging system assemblies, insert a reflecting optics 5, the axial line of the vertical central lines of bar code 4 and camera lens 21 forms angle theta, and this angle theta scope is 80 °～100 °, reflecting optics 5 forms angle α with the axial line of camera lens 21, and this angle α scope is 40 °～50 °.By the bar code 4 distinguished through reflecting optics 5 catoptric imagings on imaging system assembly 2, after sensor devices 22 on the imaging system assembly 2 receives the imaging of bar code 4, it is changed into digital signal, and with digital signal by output interface 3, import internal memory into, carry out decoding processing, when angle theta equals 90 ° by CPU, when angle α equaled 45 °, reflecting optics 5 transmitted imaging effect the best of outside bar code 4.So bar code 4 is L to the distance of reflecting optics 5 ₁, the distance of the camera lens 21 of reflecting optics 5 to the imaging system assembly 2 is L ₂, L ₁+ L ₂=L, the utility model L ₂Utilize the axial space of bar code recognizing apparatus, thereby the height of realizing the utility model bar code reading shortens nearly L ₂Distance.

As shown in Figure 3, the vertical central lines of bar code 4 and the axial line of camera lens form angle theta be 80 °, reflecting optics 5 with the axial line of camera lens 21 between shape when α is 50 ° in an angle, the height H 2 of shell 1 equals the distance L that bar code 4 arrives reflecting optics 5 ₁Add reflecting optics 5 to shell 1 bottom apart from a2:

H2＝L ₁+a2

As shown in Figure 4, the vertical central lines of bar code 4 and the axial line of camera lens form angle theta be 100 °, reflecting optics 5 with the axial line of camera lens 21 between shape when α is 40 ° in an angle, the height H 3 of shell 1 equals the distance L that bar code 4 arrives reflecting optics 5 ₁Add reflecting optics 5 to shell 1 bottom apart from a3, that is:

H3＝L ₁+a3

The height H 1=L+b1 of shell 1 shown in Figure 1, b1 are camera lens 21 distance to shell 1 bottom, by among the above figure as seen, a2 ≈ a3 ≈ b1, L=L ₁+ L ₂, therefore, adopt technical solutions of the utility model imaging system length overall H2, H3 to shorten nearly L than the height of traditional imaging system length overall H1 ₂Distance.

Claims

1, the structure of bar code recognizing apparatus, comprise shell, imaging system assembly and output interface, the imaging system assembly is provided with camera lens and sensor devices, it is characterized in that: at bar code and the imaging system inter-module distinguished, insert a reflecting optics, the vertical central lines of bar code and the axial line of camera lens form angle theta, and this angle theta scope is 80 °～100 °, the axial line of reflecting optics and camera lens forms angle α, and this angle α scope is 40 °～50 °.

2, the structure of bar code recognizing apparatus according to claim 1 is characterized in that: the angle theta best angle is 90 °, and angle α best angle is 45 °.