REAL-IMAGE ZOOM FINDER AND IMAGE PICK-UP DEVICE

WIPO Patent Application WO/2013/005376

A1

[Problem] To make a zoom finder thinner in the image pick-up direction without reducing optical performance. [Solution] The present invention comprises the following in the order given, starting from the object side: a variable objective lens group comprising a first lens group (G1) having disposed in order from the object side a negative first group first lens (L11) and reflection member (H1), a positive second lens group (G2) that is moved when changing magnification, and a positive third lens group (G3) that is moved when changing magnification; an upright optical system (20) having a reflective surface for converting an upside down image into a right-side up image; and a positive ocular lens system (30). The present invention satisfies a conditional formula (1): 1.5