首页>
外国专利>
Wide-angle slip-on viewfinder on rangefinder cameras for photographic recordings with different focal lengths
Wide-angle slip-on viewfinder on rangefinder cameras for photographic recordings with different focal lengths
展开▼
机译:测距仪相机上的广角滑动取景器,用于不同焦距的摄影记录
展开▼
页面导航
摘要
著录项
相似文献
摘要
Described is a wide-angle slip-on viewfinder (1) on rangefinder cameras for analog and digital wide-angle recordings of different image recording formats with lenses of different focal lengths, comprising three lens groups (LG1, LG2, LG3), a frame/mask unit (10) and a partially transmissive prism cube (8) which is designed as a combination element, wherein, on the light entrance side (4) in the viewfinder beam path (9), a first lens group (LG1) has a negative refractive power and the second and third lens groups (LG2, LG3) have a positive refractive power, wherein the second lens group (LG2) is composed of a first lens (L3) arranged downstream of the first lens group (LG1) and a second lens (L4) arranged on the light exit side (7) and the partially transmissive prism cube (8) is arranged between the lenses (L3, L4) and the third lens group (LG3) is arranged in a mask imaging beam path (11) which is at right angles to the viewfinder beam path (9) between the frame/mask unit (10) and the partially transmissive prism cube (8).
展开▼