iris diaphragm

基本解釋

Built-in optical system and adjustable iris diaphragm with clear image.
內置式顯微光學系統(tǒng)及光欄,像質清晰。
Iris diaphragm: The adjustable hole in a camera to control the amount of light passing through the lens. See Diaphragm.
虹彩光圈:相機上可供調校的孔，它控制穿過鏡頭的光量。參閱光圈。
Stop Down: To decrease the diameter of the light-admitting orifice of a lens by adjustment of an iris diaphragm.
縮小光圈：鏡頭的焦距和光圈的有效直徑之間的關系。一可調節(jié)的彩虹光闌，減少透鏡光孔的直徑。
IOL with iris diaphragm was implantated after cataract aspiration with aniridia and coloboma of the iris on 12 children (12eyes).
方法對12例(12只眼)伴無虹膜或虹膜缺損的先天性或外傷性白內障兒童施行白內障注吸術和帶虹膜隔人工晶狀體植入術。
When a tiny servomotor compresses a circular periphery seal that acts like an iris diaphragm, the shape of the membrane grows convex, modifying the fluidic lens's focal length.
小型伺服馬達壓下類似虹膜開口的圓圈形封墊時，薄膜會變成凸形，進而改變液體透鏡的焦距。

an adjustable diaphragm that regulates the amount of light entering an optical instrument, esp a camera. It usually consists of a number of thin metal leaves arranged so that they open out into an approximately circular aperture (Sometimes shortened to iris)