Single-Lens Camera Uses Reflex Principle (Jun, 1950)
Single-Lens Camera Uses Reflex Principle
Composing, focusing and picture-taking are all accomplished through one lens of a new miniature camera that uses the single-lens reflex principle. Without increasing the convenient size of the miniature, the new design enables the photographer to focus with a brilliant, full-size image on a ground glass while holding the camera at eye level. A reflecting mirror throws the image on the ground-glass screen and it is “bent” and enlarged by a complex prism and lens system to give a greatly enlarged, upright image. Another innovation is a built-in flash synchronizer for the focal-plane shutter with the contact located inside the tripod socket for quick attachment of the flash gun. The combination lens eliminates all parallax problems whether standard, wide-angle or telephoto lenses are used.