Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q3403926> ?p ?o }
Showing triples 1 to 23 of
23
with 100 triples per page.
- Q3403926 subject Q7470290.
- Q3403926 abstract "A Porro–Abbe prism (sometimes called a Abbe–Porro prism), named for Ignazio Porro and Ernst Abbe, is a type of reflection prism used in some optical instruments to alter the orientation of an image. It is a variant of the more common double Porro prism configuration.It is made from a piece of glass shaped like four right-angled reflecting prisms joined face-to-face in a twisted fashion. Light enters one flat face, is internally reflected four times from the sloping faces of the prism, and exits the second flat face offset from, but in the same direction as the entrance beam. The image is rotated 180° in the process, and for this reason the prism is used as an image erection system in some binoculars, and camera viewfinders.The prism is not dispersive since light enters and exits the prism only at normal incidence. Since the light is reflected an even number of times, the image's handedness is not changed.For ease of manufacture, the prism is often made as a pair of double-right-angled prisms and the two halves cemented together. A single half of the assembly is sometimes also called a Porro–Abbe prism.es:Prisma Porro".
- Q3403926 thumbnail Porro-abbe-prism.png?width=300.
- Q3403926 wikiPageWikiLink Q102626.
- Q3403926 wikiPageWikiLink Q1485994.
- Q3403926 wikiPageWikiLink Q165896.
- Q3403926 wikiPageWikiLink Q1751850.
- Q3403926 wikiPageWikiLink Q182893.
- Q3403926 wikiPageWikiLink Q1898382.
- Q3403926 wikiPageWikiLink Q209906.
- Q3403926 wikiPageWikiLink Q21516.
- Q3403926 wikiPageWikiLink Q234943.
- Q3403926 wikiPageWikiLink Q2421902.
- Q3403926 wikiPageWikiLink Q306167.
- Q3403926 wikiPageWikiLink Q306177.
- Q3403926 wikiPageWikiLink Q7470290.
- Q3403926 wikiPageWikiLink Q76359.
- Q3403926 type Thing.
- Q3403926 comment "A Porro–Abbe prism (sometimes called a Abbe–Porro prism), named for Ignazio Porro and Ernst Abbe, is a type of reflection prism used in some optical instruments to alter the orientation of an image. It is a variant of the more common double Porro prism configuration.It is made from a piece of glass shaped like four right-angled reflecting prisms joined face-to-face in a twisted fashion.".
- Q3403926 label "Porro–Abbe prism".
- Q3403926 differentFrom Q306167.
- Q3403926 differentFrom Q306177.
- Q3403926 depiction Porro-abbe-prism.png.