OPTICAL UNIT FOR REGULATION OF LIGHT FLOW

摘要

FIELD: optical systems for movie, photo and TV cameras. SUBSTANCE: device has case 1 which is located on optical axis, and tabs which axes are located on circle which center is equal to optical axis and are connected to case 1 and drive. Case has correcting filter which has adjustable transmission rate. It is designed as transparent substrate 3 which is covered with semi-transparent coating 4 which has constant density inside coating pattern. Aperture is closed by part of coating pattern when tabs are maximally closed. EFFECT: increased functional capabilities. 6 dwgf