TILLYER LENSES - AFTER TWENTY YEARS RESEARCH

 

 

Taken from the Optical Journal-Review, June 15, 1933

 

It has been known for years that ordinary lenses varied in power from center to margin. Eminent physicists such as Newton Wollaston, Ostwalt, Von Rohr, and Gleichen, at various times worked on the problem of an accurate or corrected lens.

In 1921, American Optical Company introduced a commercial lens corrected from edge to edge, for errors of both astigmatism and power, made under more exacting specifications, with new and better tools and an improved surface.

Tillyer lenses brought about a decided advance in prescription shop practice. Tillyer accuracy is a constant inspiration.

 

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