Porro prism binoculars do not split beams and therefore they do not require any phase coatings.
2.
Porro prisms binoculars occasionally need their prism sets to be re-aligned to bring them into collimation.
3.
During his years there, he focused mainly on improving submarine periscopes as well as the scopes on shotguns, prism binoculars, and guns on naval vessels.
4.
Porro prism binoculars and roof prism binoculars using the Abbe Koenig roof prism typically do not use mirror coatings because these prisms reflect with 100 % reflectivity using total internal reflection in the prism.
5.
Porro prism binoculars and roof prism binoculars using the Abbe Koenig roof prism typically do not use mirror coatings because these prisms reflect with 100 % reflectivity using total internal reflection in the prism.
6.
Porro prism binoculars and roof prism binoculars using the Abbe Koenig roof prism do not use dielectric coatings because these prisms reflect with very high reflectivity using total internal reflection in the prism rather than requiring a mirror coating.
7.
Porro prism binoculars and roof prism binoculars using the Abbe Koenig roof prism do not use dielectric coatings because these prisms reflect with very high reflectivity using total internal reflection in the prism rather than requiring a mirror coating.
8.
As the company expanded, so too did its range of products : Zeiss started producing photographic objectives in 1890, optical measuring instruments in 1892 / 93, prism binoculars in 1893 / 94 ( a development based on significant input from Czapski ), astronomical instruments in 1897 and image measuring devices in 1901.
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