Optical Aspherical lens

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.

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