Accuracy tolerance of spherical lens
1: Influence of diameter error
Centrality: for all techspecs with focal length > 10mm ® The centrality of single lens is < 1arc. Accurate alignment of the optical axis ensures that the lens is suitable for high standard imaging applications. In optical assembly, combined with the above precision diameter tolerance, Manufacturer of spherical lens this wedge angle reduction minimizes the image offset. The following figure shows the image runout caused by center error:
2: Influence of center error
Surface quality: all techspecs ® The surface quality of spherical lens, regardless of its size, is now 40-20. This precise customized product specification ensures that the lens is suitable for high standard laser systems. Even slight scratches or pits on optical surfaces can cause scattered light, which is harmful in laser applications.
The surface quality also affects the laser damage threshold of the lens. Lenses with poor surface quality may not work properly at medium laser power or energy. Scratches and pits in the lens may cause laser divergence and damage the coating. The following figure shows laser damage to the coating:
3: Coating damaged by 73.3j/cm2 laser
Optics can achieve 40-20 standard surface quality and durable antireflection film. According to the wavelength, our standard TECHSPEC ® The lens can be used in lasers with energy up to about 7J / cm2. Check out our application article, antireflective film (AR), Manufacturer of spherical lens for a complete list of energy limits for standard broadband antireflective films.
