Magnifying glasses

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Magnifying glasses for private, technical use

A magnifying spectacles is a combination of a magnifying glass and a spectacle . Magnifying glasses are mainly used in the fields of medicine and technology . For example, in general, cardiac and visceral or eye muscle surgery, magnifying glasses are of great advantage for the surgeon to magnify the operating area.

In the past, eyepieces and spectacle frames were often disadvantageously heavy. Today's loupes are smaller and lighter and deliver a sharp image.

Good loupes have the greatest possible depth of field (working distance) and the largest possible working field. The entire field of work should be sharp and clear. In addition, no distortions or changes in color may occur in the edge area of ​​the working area.

All properties can only be achieved with high quality optical systems . The glasses of the magnifying glasses and the eyepieces themselves can have a corresponding correction for the near or far range.

Web links

literature

  • Franz Grehn: Ophthalmology. 30th, revised and updated edition. Springer, Heidelberg 2008, ISBN 978-3-540-75264-6 , p. 347 ff.