IRIS DIAPHRAGM


Meaning of IRIS DIAPHRAGM in English

Function: noun

Date: 1867

: an adjustable diaphragm of thin opaque plates that can be turned by a ring so as to change the diameter of a central opening usually to regulate the aperture of a lens

iris diaphragm

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.