三棱镜制作（Prism production）.doc

三棱镜制作（Prism production） The process of the prism is more accurate than the normal glasses, the processing center must aim at the pupil, the processing baseline must be harsh. Only with the ability to grasp the edge of the grinding skills, the white prism processing of the detailed events, the ability to assemble the appropriate national standard glasses. Follow the optometry level has been forward, prism, more and more appear in our prescription, processing and prism glasses glasses fittings on the eve of the eve of the team is still a blank, tianjin miles depending on vocational skills training Hong shed light took the lead in the domestic glasses set with top - level technician training review class, according to the national vocational standard, prism processing has become the training class auditing theory and practice of the top priority. 1. Here are two common examples of teaching building prism: 1. Remove the heart method Prism is composed of chronological most roots optical unit, in their eye ophthalmic lens spherical lens and cylindrical lens can be regarded as composed of innumerable intrusive ranging prism, when we deviate from the lens optical center gazing at the object, there will be a prism effect (according to the P = FC calculations), we can equipped with glasses, are let the lens optical center not mistake the pupil center of the wearer, and let this happen on the prism effect coincided with the prescription of the requirements of the prism effect similar to this kind of style is light loading, can move the heart distance through the process of C = P/F (calculation function unit cm) calculation, move the heart of the underlying purpose is positive lens move heart mark purpose and required prism bottom is similar to the target, purpose and minus lenses move heart mark required the prism bottom to mark on the contrary, the purpose of this is the lens while moving heart. Lets unite an example to illustrate this example. Example: a prescription for: ri