prisme pentagonal
/kɔnɛktˈœʁ dɛkstɑ̃sjˈɔ̃ pˌesˌeˈi/
n
English: pentaprism · 五棱镜
Sens：Five-sided block of glass that diverts light beams to the eyepiece; this rights the inverted image formed on the focusing screen.
English: pentaprism · 五棱镜