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Pinhole Glasses
CHF 43.00
Auf Lager
SKU
R5SVB289N98
1 Verfügbar 
Geliefert zwischen Mo., 17.11.2025 und Di., 18.11.2025
Details
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pinhole glasses, also known as stenopeic glasses, are eyeglasses with a series of pinhole-sized perforations filling an opaque sheet of plastic in place of each lens. Similar to the workings of a pinhole camera, each perforation allows only a very narrow beam of light to enter the eye which reduces the size of the circle of confusion on the retina and increases depth of field. In eyes with refractive error, the result is often a clearer image. Unlike conventional prescription glasses, pinhole glasses produce a clear image without the pincushion effect around the edges (which makes straight lines appear curved). While pinhole glasses are useful for people who are both near- and far-sighted, they are not recommended for people with over 6 diopters of myopia. It should also be noted that pinhole glasses reduce brightness and peripheral vision, and thus should not be used for driving or when operating machinery.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130583927
- Genre Technik
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- Anzahl Seiten 88
- Herausgeber Betascript Publishing
- Größe H220mm x B220mm
- EAN 9786130583927
- Format Fachbuch
- Titel Pinhole Glasses
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