Aspherical lens element

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Traditional spherical lens will produce spherical aberration. Spherical lenses have an unsatisfactory property (called spherical aberration), which leads to stronger diffraction the farther the light rays are from the optical axis of the lens, and spherical aberration leads to decreased image sharpness. The shape of an aspheric lens is optimized and has excellent imaging characteristics. The main advantage is the ability to correct spherical aberrations. Aspherical lenses can effectively eliminate not only spherical aberrations, but also other forms of aberrations produced by lenses. Aspherical lenses are designed with a single element, helping to reduce the number of lenses in multi-lens optical components. In other words, aspherical lenses have more complex surfaces than traditional lenses that have spheres. Description of Precision Polishing Aspherical Lens Ecoptik's aspherical drowning and polishing process is similar to that of spherical lenses. First, the shape of the surface is determined by inundation, and then the roughness of the aspheric surface is guaranteed by polishing. The shape deviation is reduced in the process of correcting polishing. Next comes the desertification process. In the polishing process of aspheric surface, the change of curvature radius of aspheric surface is mainly solved. Through continuous fine polishing, adjustment, and other repeated operations, to ensure that each lens meet the accuracy requirements.