EEM による非球面レンズの加工

概要

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To fabricate the aspherical lens precisely, a machining apparatus with ultra-high precision has been developed by using NC EEM(numerically controlled elastic emission machining). The developed machining apparatus has following characteristics : (1) The measuring instrument is attached to the machining apparatus in order to be able to measure the aspherical shape of the lens without taking off the lens. (2) The rotating axis coupled to the center of lens holder is adopted in the developed machining apparatus, so as to be suitable for the fabrication of the axial symmetric aspherical lens. This paper describes construction, operation, characteristics of the developed machining apparatus. And some fabrication examples are also presented. The fabrication accuracy of the developed machining apparatus was ±0.05μm.
社団法人精密工学会の論文
1991-01-05