Roof Prism

Roof prism effect is also poured the objective lens into the like inverted into up and down as again, because of the structure, into the incoming light of the roof prism and roof prism of emergent rays on a straight line, so the use of roof prism binoculars, volume can be done is smaller and lighter weight, significantly improves the portability, and lens center spacing is small, The nearest observation distance is short, especially suitable for natural observation.