iris diaphragm opt.
Смотреть что такое "iris diaphragm opt." в других словарях:
iris diaphragm — i′ris di aphragm n. opt pht a composite diaphragm with a central aperture readily adjustable for size, used to regulate the amount of light admitted to a lens or optical system • Etymology: 1885–90 … From formal English to slang
iris — i•ris [[t]ˈaɪ rɪs[/t]] n. pl. i•ris•es; esp. for1,8 ir•i•des [[t]ˈɪr ɪˌdiz, ˈaɪ rɪ [/t]] i•ris; 1) anat. the contractile, circular diaphragm forming the colored portion of the eye and containing an opening, the pupil, in its center 2) pln any… … From formal English to slang
