Telecentric Field Mirror also known as a telecentric scanning lens, is a specially designed scanning lens that achieves the main beam of the focused beam being perpendicular to the focal plane at any field of view angle by making the exit pupil of the lens infinitely far in the image space; The telecentric scanning lens has special advantages in reducing the distortion of the focused spot and the drilling angle. The Telecentric Field Mirror can make the laser strictly perpendicular to the working surface during the processing, greatly improving the roundness, uniformity, and distortion of the focal point. Therefore, it is widely used in laser cutting drilling, with a wavelength range covering 355nm, 532nm, 1064nm, and other high damage thresholds.

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