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Modern optoelectronic instruments require not only the acquisition of more external information and high-quality imaging, but also the miniaturization, integration and weight reduction of the complete system. The optical system designed with traditional spherical optical parts has a complex structure, large volume, and poor image quality, which cannot meet the requirements of modern optoelectronic instruments. Spherical optical parts have restricted the development of optoelectronic instruments to miniaturization, integration, and lightweight like a bottleneck. demand.

The use of aspherical parts in the optical system increases the freedom of optical design, which can quickly eliminate various aberrations of the optical system, reduce the number of optical parts, optimize the optical system, and reduce the size and quality of the system. At the same time, the manufacturing technology of aspherical parts has been led by comprehensive technical achievements such as information technology and computer technology, precision machinery manufacturing science, microelectronics technology, mathematics, physics, chemistry, automation technology, etc. Technology has developed rapidly. In the process of miniaturization, integration and weight reduction of modern optoelectronic instruments, more and more optical systems have adopted new optical parts such as aspherical parts. In particular, military optoelectronic systems, such as military lasers, low light, thermal imaging devices, missile seekers, aircraft optical hoods, etc., use high-precision aspheric parts or diffractive optical parts. Aspheric optical parts are also widely used in medical and civilian optoelectronic instruments, such as built-in eyeball mirrors, artificial bone joints, digital cameras, optical disc reading and writing devices, high-quality projectors and other civilian products have successfully applied aspheric parts,

Application of aspheric optical parts in medical treatment

With the development of aspheric technology, modern medicine is increasingly using aspheric technology, such as aspheric intraocular lens, artificial hip joint and medical equipment with aspheric technology as the core. Studies have shown that after implantation of spherical intraocular lens in cataract patients, some patients have good vision, but complain about blurred vision, especially poor night vision, glare, halo, ghosting and other problems. According to the wavefront aberration technology, the optical The aspheric intraocular lens, which is closer to the natural lens of the human eye, is used to improve the postoperative visual function. Compared with spherical intraocular lens eyes, aspheric intraocular lens eyes have higher-order aberrations, especially spherical aberrations, which are closer to the natural lens eyes of young people. In addition, the contrast sensitivity of aspherical intraocular lens is better than that of spherical intraocular lens, especially in large pupils, high spatial frequency and glare, the difference is more obvious, so as to improve the vision under night glare.

At present, an aspherical acetabular artificial hip joint has shown in research that when the two prostheses slightly deviate during human walking or the acetabular placement is inappropriate during surgery, edge contact can be avoided, and the aspherical hip can be obtained by finite element calculation Compared with the original spherical joint, the maximum reduction of contact stress of the acetabular artificial hip joint can be up to 78.45%, thereby reducing the wear of the outer superior edge, prolonging the life of the prosthesis, and having the advantages of long service life.

Application of Aspherical Optical Parts in Civil Products

Aspherical surfaces are everywhere in 13 daily life, for example: Aspherical headlights are the most popular car lights in the world, and have a good light distribution effect; Aspherical projection large-screen display optical system makes the thickness doubled; Aspheric solar condensing lens; aspheric optical parts are used in digital cameras, laser printers, scanners, marking machines, optical disc reading and writing devices and camera lenses on mobile phones.

As aspheric manufacturing technology continues to mature, aspheric surfaces are increasingly used in space exploration, defense equipment, and civilian products. Aspheric optical parts have become key components in optoelectronic instruments. And civil and other fields have an irreplaceable position