Perger prism
id:
perger-prism-298-8206353
title:
Perger prism
text:
A Perger prism or Perger–Porro prism system is a prism, that is used to invert an image. The special feature of this prism is that, like a traditional double Porro prism system, it manages this with only four beam deflections and has neither a roof edge with the accompanying phase correction problems, a mirrored surface or an air gap. However, in contrast to the traditional double Porro prism, it leads to a significantly reduced eyepiece/objective axis offset. The reduced beam offset allows for
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Perger_prism
date created:
date modified:
2024-01-07T12:03:26Z
main entity:
{"identifier":"Q16269164","url":"https://www.wikidata.org/entity/Q16269164"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/c/c4/Perger_prisma.png","width":1559,"height":1039}
fields total:
13
integrity:
14