Multifunctional lighting module

Abstract

The invention provides a multifunctional illumination module. The multifunctional illumination module comprises a first light source for emitting a first light beam and a second light source for emitting a second light beam, the wavelength of the first light beam is different from that of the second light beam; a diffractive optical element which copies and expands the first light beam and the second light beam; the divergence angle of a first incident light beam formed by the first light beam is not smaller than the included angle between adjacent diffraction light beams formed after the first light beam passes through the diffraction optical element, so that floodlight illumination is realized; the divergence angle of a second incident light beam formed by the second light beam is smaller than the included angle between adjacent diffraction light beams formed after the second light beam passes through the diffraction optical element, so that structured light illumination is achieved. According to the illumination module, the two functions of floodlight illumination and structured light projection are integrated into one module, and synchronous illumination of floodlight illumination and structured light illumination is achieved; meanwhile, the multifunctional module has the advantages of being small in size and low in power consumption, and the multifunctional module can be easily integrated into intelligent equipment.

Description

[0001] This application is a divisional application of the invention patent application with the application number 201810037171X and the name "Multifunctional Lighting Module". technical field [0002] The invention relates to the field of semiconductor lighting, in particular to a multifunctional lighting module. Background technique [0003] Visual information is gradually becoming an important way for smart devices to obtain information and perceive the world. With the increasing functions of smart devices and the diversification of application scenarios, the demands based on visual information are becoming more and more extensive. For example, functional requirements such as unlocking and payment based on face recognition, gesture and action interaction based on human body information, and these functions also need to have high reliability in different scenarios and under different environmental lighting conditions. In traditional equipment, it is difficult to use camer...

AI Technical Summary

Problems solved by technology

The trend of miniaturization and thinning of smart devices makes it extremely difficult to integrate so many devices

On the one hand, more devices will bring higher power consumption, which will reduce the battery life of smart devices; on the other hand, the integration of multiple devices will greatly increase the requirements for the assembly process, resulting in a decrease in product yield and an increase in production costs.

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