Patent ID: 7483628

Claim:
An optical viewfinder of a camera having a function of taking photographs, comprising: an objective module, having an object lens installed in a fixed base and a clamping ring engaged onto an opening at the front of said objective module; a base, being a base body having an open top and a rectangular aslant surface therein for fixing a reflective mirror and reflecting the light received by said object lens; an eyepiece module, installing a ground-glass eyepiece disposed at an upper casing of an aslant rear cylinder having an open bottom for focusing, so as to form images thereon, having a plane glass lens engaged to an opening of a viewfinder frame at the rear of said upper casing of said rear cylinder, and a rear section of the bottom being coupled with a lower casing of said rear cylinder; and an upper casing of a front cylinder, being a cover with an open bottom; such that said objective module and said eyepiece module are fixed to the front end and the rear end of said base respectively, and said upper casing of said front cylinder is disposed across said objective module and said eyepiece module and fixed to the middle section of said base.