Bar code reading device with reflector

Abstract

The invention belongs to the technical field of bar code reading, and discloses a bar code reading device with a reflector, which comprises a shell 1, a lens 2, an image sensor 3, a lighting module 4, an imaging reflector group 5 and a protective transparent screen 6. The lighting module 4 comprises two LEDs and three reflectors, and light emitted by the LEDs is reflected by the three reflectors for multiple times and then irradiates a target object. The imaging reflector group 5 comprises two reflectors, and a target image is reflected twice by the two reflectors and enters the lens 2 for imaging. The design that the reflectors are matched with the LEDs is adopted, far and near double-view-field illumination is formed, effective superposition is achieved in the whole code scanning area, and the effects of uniform illumination and no dark corner are achieved. Meanwhile, the reflectors isolate the light path of the LED directly irradiating the human eyes, so that the glare-free effect is realized.

Description

technical field [0001] The invention relates to the field of barcode reading, in particular to a barcode reading device with a light reflector. Background technique [0002] Barcode reading equipment is widely used in the field of supermarket cashier and self-service cashier. Due to the requirements of the use environment, it needs to have strong mobile adaptability. The glare effect of the eye needs to be suppressed, which requires the equipment to have a good lighting system. Due to the limitation of the scene, the lighting system is generally located on the upper part of the code scanning device, and its structure cannot hinder the imaging system, so the size of the lighting system is often restricted. The scanning range of the device is generally the farthest from the veneer reading to the depth of field of the device, and the device needs to be able to provide uniform lighting at the farthest and the nearest two places at the same time. [0003] In the prior art, two ...

AI Technical Summary

Problems solved by technology

[0003] The existing technology is to use two different light distribution lighting components, one set is for the distance, and the other is for the near, which will increase the number of components in the lighting system, resulting in a relatively large volume of equipment

And the current commonly used method of suppressing glare is to reduce the surface brightness by means of diffusion, but this often leads to the loss of light energy, and the light is not easy to control

Therefore, while solving the glare, there is still no good way to provide a small-sized barcode scanning device with uniform illumination in the far and near scanning areas.

Images