发明授权
US5627618A Compact high-zoom-ratio real-image finder 失效
紧凑型高倍率实时图像采集器

Compact high-zoom-ratio real-image finder
摘要:
A high-zoom-ratio real-image finder is provided with an objective lens system including a first lens unit having a positive power, a second lens unit having a negative power, a third lens unit having a negative power and a fourth lens unit having a positive power. Zooming is performed by moving the second and third lens units always in the same direction. A luminous flux restricting member is integrated with a holder for the second lens unit. A zoom strobe unit moves integrally with a holder for the third lens unit.
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