Porro telescope? How much do you know about it, its concept, history, functions, etc. Here is a simple introduction, welcome to visit more information, all in Ningbo yuyao Ruilong optical instrument Co., LTD!

Prism based binoculars are primarily of two types- Porro Prism binoculars and Roof prism binoculars. Porro erection system has been patented in the name of an Italian scientist Ignazio Porro, who had developed his own system of magnifying an image and representing it in a erect form. This method has evolved a lot and is said to have been mastered by the likes of Carl Zeiss. These binoculars work on a Z-shaped prism set-up, resulting in a better depth realization and a wider field of object-viewing. They also fold the elliptical path using the Z-shaped setup, thereby reducing the physical size of the binoculars to less than that of the optical Focal length of the object being viewed.

Less is known about the working principles of binoculars using Roof prisms, but their earliest designs can be traced back to the writings and testimonials of Victor Emile Daubresse. This prism technique is said to have been patented by Carl Zeiss in 1905 and is used to fold the optical path, thereby producing higher magnification through smaller sized binoculars. Binoculars based on the Roof-prism offer a better viewing angle, but a narrower range of objects can be viewed by a binocular of same size based on the principles of the Porro prism setup.
 

Source:  Big Porro Binoculars，Monocular Telescope

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