Integrally Molded Optical Coupler for Alignment and S/N Ratio

The patent integrates the microlens array, optical path changing portion, and V-shaped groove array into a single integrally molded resin body. This merging eliminates the need for separate fixing units and multiple assembly steps, thereby maintaining positioning accuracy while reducing device complexity. The integral structure ensures that all optical components are precisely positioned relative to each other without requiring additional fixation mechanisms.

By integrating all optical components into a single molded body, the patent creates a sealed optical path that prevents ambient light from entering and interfering with the optical signals. This integral structure improves the S/N ratio by eliminating gaps and interfaces where ambient light could infiltrate, while simultaneously reducing the complexity of assembling and sealing multiple separate components.

The patent achieves high coupling efficiency by integrating all optical components into a single molded structure, ensuring precise alignment between the microlens array, optical path changing portion, and V-shaped groove array. This integral manufacturing approach eliminates alignment errors that would occur with separate components and fixing units, while the molding process itself provides an efficient, automated manufacturing method that reduces assembly complexity.