Erich Heynacher

Production And Testing Of Aspheric Surfaces State Of The Art In The Federal Republic Of Germany

This paper gives a survey of the activities in the Federal Republic of Germany - from spectacle lens optics through photographic optics to astronomical and X-ray optics. The production techniques employed - grinding with loose abrasive, machining with bonded grain, single-point diamond turning and copying techniques - are discussed. Testing techniques which play an important part in production can only be touched on in passing.

The Production Of Aspherical Surfaces By Mechanical Means

Production facilities for the high-precision shaping of aspherics by mechanical processing are described. The production and test equipment are closely linked with each other. This creates optimum conditions for an economical series production.