VCSEL Light Source Module With Dynamic Beam Control for Distance Sensing

The light source is divided into multiple VCSEL elements arranged in a matrix pattern, allowing independent control of each element. This segmentation enables the system to achieve high light output for long-distance measurement by activating multiple elements simultaneously, while maintaining the ability to use fewer elements for shorter distances, thus resolving the contradiction between device complexity and light output.

The system dynamically adjusts the emission pattern by independently controlling multiple VCSEL elements based on the measured distance. For long distances, the controller activates elements that concentrate light in a specific region to extend measurement range. For shorter distances or when broader coverage is needed, the controller activates additional elements to expand the detectable region. This dynamic adaptation resolves the contradiction between light output concentration and detectable region area.

Each VCSEL element in the matrix is equipped with its own collimator lens, creating localized optical systems with optimized emission characteristics. This allows different regions of the light source to have different emission angles and patterns tailored to specific detection needs. The local quality approach enables high light transfer efficiency across the entire detectable region, not just at the center, while maintaining manageable device complexity through modular architecture.

The optical system is segmented into multiple collimator lenses, each associated with a specific VCSEL element or group of elements. This segmentation enables independent angular adjustment for each optical channel, providing versatile beam direction control. The modular structure maintains manageable device complexity by using identical lens designs that can be independently positioned and controlled, achieving both low complexity and high adaptability.