| 摘要 |
A photographic camera having a variable focus objective lens incorporates a binocular rangefinder of the "stereo" type including a reticle and lens means for projecting a virtual image of the reticle a predetermined distance into the viewed field. Left and right eye view windows are located to intercept different portions of common imaging wavefronts defining the virtual reticle image. The rangefinder is coupled to a focus adjustment mechanism for the camera such that the image distance of the projected reticle image and the focused distance of the camera objective lens are caused to vary in correspondence. A novel rangefinding method is also disclosed.
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