Patent
Automatic focusing camera
Hiroshi Kimata,Masaaki Morizumi +1 more
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TLDR
In this article, an automatic focusing camera comprising optical object distance detecting means having a light emitting element for measuring an object distance and a light receiving element for receiving the reflected light from an object, provision being made of rotating means which rotates about an optical axis of a camera lens.Abstract:
In an automatic focusing camera comprising optical object distance detecting means having a light emitting element for measuring an object distance and a light receiving element for receiving the reflected light from an object, provision being made of rotating means which rotates about an optical axis of a camera lens and which has scanning means cooperating with the light receiving element to detect the object distance as a function of an angular displacement of the rotating means.read more
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Patent
Automatic focus detection system
Matsui Toru,Hiroshi Ueda +1 more
TL;DR: An automatic focus detection system for use in a camera system consists of a focus detecting unit having one light receiving element corresponding to, in an objective field, a focus detection area whose center is deviated from the optical axis of the objective lens, the position of the focus detection detection area being changed in accordance with the change of the focal length of the camera's objective lens.
Patent
Focus detection apparatus having multiple detecting zones
TL;DR: In this article, a focus detecting apparatus, characterized in that it comprises, multiple detecting zones situated in a focal plane, an orientation changing mechanism which changes the orientations of images formed in these zones, an image separating device which separate these images into image pairs, and multiple sensors, having a different positional relationship to that of the multiple detectors, which detect the image pairs.
Patent
Automatic focusing apparatus
TL;DR: In this article, an automatic focusing apparatus for use with a camera of the type having two interchangeable lenses with different focal lengths, includes a ranging device for finding in which distance range is located an object to be photographed, i.e., close range or long range.
Patent
Automatic range finding device
TL;DR: An automatic range finding device has a light-emitting unit for emitting a slit of light as a beam toward a subject and a light receiving unit for receiving light reflected from the subject, thereby to detect the subject distance based on the incident position of the reflected light received by the light-receiving unit as mentioned in this paper.
Patent
Focusing lens position detection apparatus and an auto-focus surveying apparatus
TL;DR: In this article, a focusing lens position detection apparatus is provided in an auto-focus surveying instrument that includes a beam splitter which splits object light transmitted through the focusing lens to produce light split from the telescopic optical system.
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Patent
Automatic focusing device
Akio Yamanishi,Yasuo Yamazaki +1 more
TL;DR: In this article, a camera automatic focussing mechanism includes a relay lens which is coaxial with the camera objective lens and forms on a coaxial predetermined area of a photosensitive element an image of a first image of an object formed by the objective lens on a first plane.