Optical engine for barcode recognition device

Abstract

The invention discloses an optical engine for a barcode recognition device. The optical engine comprises a lens module, a light supplementing module and a sensor circuit module, wherein the light supplementing module and the sensor circuit module are arranged on the two sides of the lens module respectively. First positive lens bodies are installed at the positions corresponding to light sources in the light supplementing module, and the light sources adopted to the light supplementing module are one kind or the combination of more than one kind of white light sources, red light sources and near-infrared light sources. The optical engine for the barcode recognition device further comprises an outer cover which covers the light supplementing module and is connected with a lens module base, and the first positive lens bodies are installed at the positions, corresponding to the light sources, of the outer cover. The lens module comprises the lens module base, a lens base and an imaging lens, wherein the lens base is arranged on the lens module base, the imaging lens is installed on the lens base, the number of optical lens bodies installed inside the imaging lens is five, and the optical lens bodies are sequentially the second positive lens body, the first negative lens body, the third positive lens body, the fourth positive lens body and the second negative lens body from the position far away from the front end of the lens of the lens module base to the position close to the rear end of the lens of the lens module base. According to the optical engine for the barcode recognition device, the recognition success rate of the barcode recognition device is improved.

Description

technical field [0001] The invention relates to an optical engine, in particular to an optical engine for barcode recognition equipment. Background technique [0002] In daily life and industrial applications, the development of barcode technology is very rapid. From the early one-dimensional code to the current two-dimensional code, the development of barcode technology puts forward higher requirements for the corresponding barcode recognition technology. As an important part of the identification device, the optical engine's imaging effect has an important impact on the recognition success rate of the identification device. The structure of the imaging lens in the optical engine directly affects the imaging effect of the optical engine, and most of the current imaging lenses adopt a multi-lens structure. This is because the image formed by the optical system in actual work is different from the result obtained by paraxial optics, and there is a certain deviation. This dev...

AI Technical Summary

Problems solved by technology

Although the utility model improves the success rate of reading to a certain extent by using soft supplementary light sources, the success rate of reading of the reader is limited.

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