OPTICAL LENS SYSTEMS DESIGN FORMULAE FOR HIGH SPEED COMPUTERS.

The Flair program was segmented into 3 parts, chain 1 including automatic correction features and chain 3 output features. An extensive study is being made of the Heliar type lens, three programs turning out different designs for different glasses the choice of glass does not appear to be very significant, the programs being able to handle a large variety of glasses. The numerical methods used for Flair are being investigated, including matrix inversion with a Hilbert matrix. No program was found that can invert a 6 x 6 Hilbert matrix with better than two place accuracy.