초록 ▼

In the present apparatus, a field mask is arranged at the predetermined focal plane of a photographic lens of a camera. This mask is formed with central rectangular opening horizontally and a pair of side rectangular openings vertically extending. Light bundles passed through these rectangular openi

In the present apparatus, a field mask is arranged at the predetermined focal plane of a photographic lens of a camera. This mask is formed with central rectangular opening horizontally and a pair of side rectangular openings vertically extending. Light bundles passed through these rectangular openings are subjected to condensation by passing through respective condenser lenses. At a downstream, there is provided a re-imaging plate which is formed with corresponding three pairs of re-imaging lenses. All these re-imaging lenses are made into plano-convex shape having one and the same radius of curvature and molded solid with the substrate board of said re-imaging plate into a solid one piece.

대표청구항 ▼

A focus detection apparatus of a camera for detecting a focusing condition of a photographic lens of the camera, comprising: a plurality of focus detector assemblies, each comprising: a condenser lens for condensing light which forms an image by the photographic lens; a pair of re-imaging lenses for

A focus detection apparatus of a camera for detecting a focusing condition of a photographic lens of the camera, comprising: a plurality of focus detector assemblies, each comprising: a condenser lens for condensing light which forms an image by the photographic lens; a pair of re-imaging lenses for receiving a part of said image light from said condenser lens for dividingly reforming therefrom a first and a second partial image; first and second light reception element groups arranged separately and in line with each other and for receiving said first and second partial images, respectively, whereby mutual and positional differences between the first and second partial images are sensed as a function of the focusing condition of the photographic lens; all of the re-imaging lenses being formed of plano-convex lenses having one and the same radius of curvature.