Laser Beam Array Offset Layout for Higher Fiber Coupling

The patent applies asymmetry by intentionally shifting the center line of the beam array relative to the optical axis of the condenser lens. Specifically, the center line is shifted in the direction opposite to the second direction (orthogonal to the beam propagation direction). This asymmetric positioning compensates for the beam expansion that occurs in beams with longer optical path lengths, allowing all beams to be effectively collected by the condenser lens and coupled to the optical fiber, thereby resolving the coupling efficiency deterioration.

The patent applies preliminary anti-action by pre-positioning the beam array center line offset from the condenser lens optical axis before the beams reach the lens. This preliminary positioning counteracts the expected beam expansion that will occur during propagation through the lens. By anticipating and compensating for the beam expansion in advance through the center line shift, the patent prevents coupling efficiency loss without requiring active control or feedback mechanisms.