mage—in other words, a lens which gives equally clear definition at allpoints of its field. The value of such an optical property is easily apparent when it is consideredthat the eye in normal vision does not remain stationary in its socket but canbe rotated through an angle of nearly 180°.… … Fig. 1 To eliminate this unnatural restriction was the problem of the scientists,until at length Dr. Moritz von Rohr, of the scientific stafl^ of Carl Zeiss, ourassociates at Jena, Germany, arrived at a practical solution after extensiveinvestigations and published his findings in 1911. He…
Lenses · Eyeglasses
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