论文部分内容阅读
袖珍唱盘即所谓的CD用的精密非球面透镜现月产约达100万件,这是几年前还不敢设想的技术和生产量,可以说这是日本独有的新生产业。这种技术并不只局限于CD,而且还广泛应用于记忆装置的光盘中。在塑料、无机光学玻璃的精密非球面模压成型技术方面也有不少引人注目的进展,它需要有更尖端的加工技术和检测技术。在光学系统中引入非球面后,有时会使球面组合时难以做到的:消像差变得简单易行。换言知,由球面组合的相当复杂的系统,引入
The compact disc, the so-called compact aspheric lens used for CDs, is now producing about 1 million units a month, a technology and production not conceivable just a few years ago, arguably Japan’s only new-born industry. This technique is not limited to CDs but is also widely used in compact discs in memory devices. There are also many notable advances in the precision aspheric molding of plastics and inorganic optical glass that require more cutting-edge processing and inspection techniques. Introducing an aspherical surface in an optical system sometimes makes it difficult to combine spherical surfaces: astigmatism becomes simple and easy. In other words, it is introduced by a rather complex system of spherical combinations