Silicon Lens Support with Passive Alignment for Laser Diode Cooling

The silicon support structure incorporates self-aligning features including recesses that receive the laser diode and collimating lens, and sloped surfaces that automatically guide component positioning. This self-service alignment mechanism eliminates the need for complex active alignment tools and procedures, achieving precise alignment through the structure's inherent geometric features rather than external alignment equipment.

The patent replaces the mechanical active alignment system (requiring specialized tools and manual adjustment) with a passive mechanical structure featuring precision-machined recesses, slots, and sloped surfaces. These structural elements provide automatic mechanical guidance and positioning, substituting the need for complex alignment machinery with a well-designed support structure.

The patent changes the bonding parameters by transitioning from epoxy adhesive bonding to direct soldering or brazing of metalized surfaces. This parameter change in the joining process provides significantly higher bond strength and thermal stability, eliminating the reliability issues associated with epoxy degradation under thermal cycling while maintaining ease of manufacture through standardized metallurgical joining processes.

The support structure incorporates metalized surfaces (such as gold or other suitable metallizations) on the silicon substrate, creating a composite structure that combines the thermal and mechanical properties of silicon with the bonding properties of metals. This composite approach enables reliable soldering or brazing connections while maintaining the structural advantages of silicon.

The patent employs silicon-based cooling structures that inherently resist oxidation and corrosion, creating an inert-like environment for heat dissipation. Silicon forms a stable, protective oxide layer that prevents further degradation, unlike conventional metals that continue to corrode. This provides long-term reliability while maintaining effective heat removal through the silicon thermal conduction pathways.

The cooling package uses silicon as the primary thermal management material, potentially combined with other corrosion-resistant materials or coatings. This composite approach leverages silicon's excellent thermal conductivity and inherent corrosion resistance, replacing conventional metal-based cooling systems that suffer from oxidation and degradation over time.

The patent merges multiple alignment functions into a single integrated support structure that simultaneously provides positioning for the laser diode, positioning for the collimating lens, and mechanical support. The sloped surfaces, recesses, and slots work together as a unified system to achieve alignment in one operation, eliminating the need for separate alignment steps for each component while maintaining precise collimation.

The silicon support structure serves multiple functions simultaneously: it provides mechanical support, thermal management, precise positioning through recesses and slots, and alignment guidance through sloped surfaces. This multi-functional design achieves precise collimation while improving productivity by consolidating what would otherwise require multiple separate operations into a single integrated component.