Non spherical lens

Non spherical lenses have a continuous change in curvature from the center to the edge,The curvature radius varies with the central axis,Used to improve optical quality, which helps minimize the number of lenses in the lens to the greatest extent possible,Non spherical lenses have unique advantages over spherical lenses,There is a great advantage in correcting ball deviation,Therefore, it has been widely used in optical instruments, focusing imaging, and optoelectronics industries.

Spherical lens

According to their shape and function, lenses can be divided into plano convex lenses, plano concave lenses, biconvex lenses, meniscus lenses, achromatic lenses, double laminated lenses, triple laminated lenses, etc.Lenses have the functions of converging light rays, diverging light rays, and beam shaping in the optical path,Convex and biconvex lenses converge light rays;Flat concave and double concave lenses will diverge light rays,These lenses are widely used in related fields such as optical imaging, laser detection, optical communication, and life sciences.

以下资料来源：文心一言

There are significant differences between non spherical lenses and spherical lenses in multiple aspects, mainly including the following aspects:

一、Shape and curvature

spherical lens:The surface is a spherical part with a constant curvature.This simple geometric shape makes the manufacturing process of spherical lenses more mature,Becoming the primary choice in traditional optical systems.

Non spherical lens:Its surface curvature is not fixed and varies according to specific design requirements.This complex curvature design can better control the direction of light propagation,Thereby reducing or eliminating various aberrations in the optical system.

二、Optical performance 

spherical lens:Due to its constant curvature, it is prone to spherical aberration,The edge rays and the center ray cannot converge at the same focal point,Causing imaging blur and distortion, especially in large aperture lenses where it is more pronounced.

Non spherical lens:By precisely designing the surface curvature, spherical aberration and other optical aberrations can be effectively reduced, providing clearer and more accurate imaging results.They can better focus light and significantly improve the performance of optical systems.

三、Design flexibility

spherical lens:Limited design flexibility, mainly suitable for simple optical systems.Due to the inherent defects of spherical lenses, it is difficult to meet complex optical requirements.

Non spherical lens:High design flexibility allows for precise design according to specific needs, meeting the requirements of various complex optical systems.Non spherical lenses provide more creativity and solutions in modern optical design.