Lens production

The assembly process seems simple, but the technical points are very complicated. It requires years of technical accumulation and continuous exploration and improvement.

Installing a diffraction-limited lens depends on many factors, such as air separation, lens tilt and off-axis, fit tolerances, internal stress, etc.

The air gap needs to reach an accuracy of several micrometers to a thread, and the limit accuracy can reach 1 micron; eccentricity is also a consideration in the assembly of diffraction-limited lenses. Simply inserting the lens and spacer is far from enough. Our lens eccentricity can reach 1 micron. Or 10'.

During the assembly process, secondary design is often used to compensate for the cumulative errors of the entire system.