What are the differences between high precision ground spherical lens and aspheric lens?
Lenses have different shapes and different parameter requirements. Now we often see spherical lens and aspheric lenses. Jiangxi otech optics now mainly produces spherical lenses in large quantities. But today, let's take a look at the differences between high-precision ground spherical lenses and aspheric lenses?
A spherical lens has a constant curvature from the Zhongxin of the lens to the edge, while an aspheric lens has a continuous change in curvature from the Zhongxin center to the edge.
The "spherical lens curvature" of a spherical lens is constant, that is, the front and rear surfaces of the lens are part of the spherical surface respectively. Each surface can be convex (convex outward from the lens), concave (concave into the lens), or "flat" (flat). The line connecting the spherical Zhongxin points on the front and rear surfaces of the lens is called the optical axis of the lens. In almost all cases, the optical axis of the lens will pass through the Zhongxin in the physics of the lens. The curvature radius of aspheric lens changes with the Zhongxin axis, which has a better curvature radius and can maintain good aberration correction. The aspheric lens is used to replace the spherical lens. Zui's remarkable advantage is that it can correct the spherical aberration caused by the spherical lens in the collimation and focusing system. By adjusting the surface constant and aspheric coefficient, the aspheric lens can achieve a large spherical aberration. Aspheric lens basically reduces the spherical aberration produced by spherical lens. At present, the main processes of aspherical lensinclude: precision glass molding, precision polishing molding, hybrid molding and injection molding.
Jiangxi Aote optics has a complete optical cold processing production line, which can produce customized optical lenses, optical prisms, optical lenses and filters of various conventional and fechang sizes, meet various high-precision production requirements of customers, provide complete optical vacuum coating process, and realize the integrated production and customization service of optical glass.
