Roof Prism Design

However the costs of producing roof prisms are higher than those for porro prism binoculars.

Roof prism design.

Roof prisms are the newer option. These two 90 faces resemble the roof of a building giving this prism type its name. Built to last in a harsh environment a roof prism binoculars central portion that connects the 2 tubes is either an open bridge or closed bridge design. While light loss and transmission rates are huge factors in optical quality there are many other factors that allows a roof prism bino for possible.

There are two prisms and these meet at a 90 angle with the shape looking similar to the roof of a house. Roof prisms in binoculars. The open bridge design has a focus mechanism close to the eyepiece with the stabilizing section towards the objectives while the closed bridge design has an enclosed focus mechanism. Today roof prisms dominate the top end birding binocular market.

While the roof prism design is inferior to the porro prism in its basic form roof prisms often have higher quality glass and stricter engineering controls versus cheap porro prism binos. The design of the prisms means they work together to correct blurred images and let you see your target clearly. Differences in binoculars build and design. Roof prism binoculars with premium glass and precision prisms produce high quality images.

The porro prism design was simpler and more light efficient and its images showed better contrast. Roof prisms enable slim binoculars. Dachkante lit roof edge is a reflective optical prism containing a section where two faces meet at a 90 angle.