Prismes optiques

Half Penta Prism, Semipentaprisms, Used In Telescopes Overview: Half-Penta prisms also known as Bauernfeind prisms or Semi-pentaprisms are used to deviate the line of sight by 45° without inverting or reverting the image. It is widely used in telescopes and also has applications in projection and imaging system, in microscope tubes, and in geodesy. The Half-penta prism has the geometrical structure of a penta prism cut in half. The beam is reflected twice in the prism, first

Roof Prism, Amici Roof Prism, Schmidt Prism, Roof Pentaprism Overview: A roof prism, also called a Dachkanten prism or Dach prism is a reflective prism containing a section where two faces meet at a 90° angle, resembling the roof of a building and thus the name. Reflection from the two 90° faces returns an image that is flipped laterally across the axis where the faces meet. Characteristic for a roof prism is that the beam is split in half, with one half of the beam hitting