Multicolor Laser Source Light Mixing Module

The patent divides the laser source arrangement into functionally separated groups: blue laser diodes in a first array, green laser diodes in a second array, and red laser diodes in a third array. Each color group is independently positioned and optically processed through separate optical paths before being combined by the DMD device, ensuring uniform color distribution while maintaining compact module volume.

The patent transitions from a two-dimensional side-by-side arrangement to a three-dimensional spatial configuration where laser diodes are arranged in multiple arrays at different positions and angles. The optical system uses mirrors and lenses to fold the optical paths, effectively utilizing three-dimensional space to achieve uniform color distribution without increasing the module's footprint.

The patent introduces dynamic elements including a rotating diffusing member and a movable mirror that can change the optical path in real-time. The diffusing member rotates to continuously vary the scattering patterns, while the movable mirror adjusts the beam path dynamically, both working together to temporalize the laser coherence and eliminate speckle patterns without significantly increasing structural complexity.

The patent introduces a diffusing member as an intermediary element between the laser diodes and the projection system. This diffusing member scatters the coherent laser light, converting it into partially coherent light that produces uniform illumination without speckle artifacts, while maintaining the relatively simple sequential row arrangement of the laser diodes.

The patent segments the optical system into distinct functional modules: blue laser array with its optical path, green laser array with its optical path, and red laser array with its optical path. Each module can be independently assembled and adjusted, then integrated into the complete system. This modular segmentation maintains ease of manufacture while achieving high image projection quality through precise optical control.

The patent employs universal optical components such as mirrors, lenses, and a DMD device that can handle multiple wavelengths simultaneously. These multi-functional components process blue, green, and red laser light through the same optical train, simplifying the overall design while ensuring high image projection quality across all color channels.