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Optical Engineering

Interesting property of inverted telescopes and their relation to myopic eyes
Author(s): Daniel Malacara-Hernandez; Zacarias Malacara
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Paper Abstract

It is well known that telescopes magnify the image. However, it is not often mentioned that they also reduce the depth of field. Inverted Galilean telescopes obviously minify the object apparent size, but the depth of field is also increased. It has been observed that myopic persons wearing correcting noncontact eye glasses develop noticeable presbyopic effects at a later age than emmetropic persons. This effect may be explained by considering that the negative correcting lens and the positive myopic dioptric power of the eye together form an inverted Galilean telescopic system.

Paper Details

Date Published: 1 March 1991
PDF: 3 pages
Opt. Eng. 30(3) doi: 10.1117/12.55793
Published in: Optical Engineering Volume 30, Issue 3
Show Author Affiliations
Daniel Malacara-Hernandez, Ctr. de Investigaciones en Optica, A.C. (Mexico)
Zacarias Malacara, Ctr. de Investigaciones en Optica, A.C. (Mexico)

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