Roof Prism Design

There are two prisms and these meet at a 90 angle with the shape looking similar to the roof of a house.

Roof prism design.

Roof prisms are the newer option. A roof prism also called a dach prism or dachkanten prism from the german. Roof prisms enable slim binoculars. The porro prism design was simpler and more light efficient and its images showed better contrast.

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. Roof prism binoculars with premium glass and precision prisms produce high quality images. 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.

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. Roof prisms in binoculars. However the costs of producing roof prisms are higher than those for porro prism binoculars. Nevertheless the roof prism design s appeal was so great that manufacturers went all out to perfect it.

Today roof prisms dominate the top end birding binocular market. Dachkante lit roof edge is a reflective optical prism containing a section where two faces meet at a 90 angle. These two 90 faces resemble the roof of a building giving this prism type its name.