Improved TECHSPEC ® Various standard tolerances for spherical lenses. These improvements make assembly easier and can reduce complex assembly processes, such as active alignment. These improvements improve performance and make our lenses easier to integrate into OEM applications. We have improved the processes of several world-class spherical mirror manufacturing plants in Japan, Singapore and the United States, so that these precision specifications can be realized. EO can produce millions of lenses every year. Improved specifications include:
Diameter tolerance: all techspecs ® Spherical lenses, regardless of size, Manufacturer of spherical lensnow have a diameter tolerance of + 0.000 / -0.025mm. Keep the diameter tolerance at 25 μ Within m, it can be ensured that the lens can be accurately installed in the barrel assembly so that the optical axis of the lens is aligned with the mechanical axis.
The diameter tolerance is a key mechanical tolerance that must be considered when installing optical elements. Deviation from the nominal diameter may prevent the lens from being accurately assembled in the mounting fixture, resulting in eccentricity or inclination in the optical assembly. The following figure shows a lens that is not firmly fixed in the barrel due to diameter error:
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.
