REAR FOCUS TYPE ZOOM LENS INTEGRATED WITH OPTICAL VIEW FINDER

摘要

PURPOSE: To provide a rear focus type zoom lens integrated with the optical view finder of a TTL system. CONSTITUTION: In this zoom lens of a rear focus type in four-group constitution for which an objective lens 51, a variable magnification lens 52 and an image formation lens 55 are arranged in order from the front of a lens system, a beam splitter 56 is installed between a lens positioned at the final end of the image formation lens 55 and an image formation surface and the image formation lens and a view finder system are integrated.