Micro laser scanning device and portable terminal thereof

Abstract

The invention discloses a micro laser scanning device and a portable terminal of the micro laser scanning device, wherein the micro laser scanning device comprises a light emitting component, a light receiving component and a data processing module; the light emitting component comprises a laser emitting module, a line collecting mirror and a wabbler mirror; the wabbler mirror is used for reflecting laser beam emitted by the line collecting mirror to a scanning object; the light receiving component comprises a photovoltaic conversion module and a spot collecting mirror; the spot collecting mirror is used for directly receiving and collecting lights reflected by the detected object to an illuminated face of the photovoltaic conversion module; the photovoltaic conversion module converts a light signal into an electrical signal; the data processing module processes the received electrical signal to obtain corresponding image information. The portable terminal comprises a micro laser scanning device, wherein the corresponding image information scanned by the micro laser scanning device is displayed by the display module of the portable terminal. The micro laser scanning device has the advantages of fast scanning speed, flexible layout and small power consumption.

Description

technical field [0001] The invention relates to a laser scanning device, in particular to a miniature laser scanning device and a portable terminal thereof. Background technique [0002] The current laser scanning device adopts the optical structure of "backward reception", that is, the optical paths of the scanning light and the receiving light basically overlap. In this optical structure, because the oscillating mirror used to scan the outgoing light is also used to reflect and recycle the light. In order to ensure that the recovered light signal has sufficient luminous flux, the area of ​​the oscillating mirror cannot be made too small, usually about 11mm*14mm, and the larger area of ​​the oscillating mirror, in addition to increasing the volume of the laser scanning device, also limits the improvement of the scanning frequency , At the same time, the power consumption of the scanning mechanism is also relatively large. Generally, the scanner with the above-mentioned st...

AI Technical Summary

Problems solved by technology

In order to ensure that the recovered light signal has sufficient luminous flux, the area of ​​the oscillating mirror cannot be made too small, usually about 11mm*14mm, and the larger area of ​​the oscillating mirror, in addition to increasing the volume of the laser scanning device, also limits the improvement of the scanning frequency , while the power consumption of the scanning mechanism is also relatively large

Generally, the scanner with the above structure has a scanning frequency of only about 20Hz

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