초록 ▼

In the disclosed focus adjusting device, at least part of an image forming optical system and a focus adjusting mechanism is arranged within a housing attachable to and detachable from a camera body. A focus condition detector includes a photo-sensor disposed on a plane corresponding to the camera i

In the disclosed focus adjusting device, at least part of an image forming optical system and a focus adjusting mechanism is arranged within a housing attachable to and detachable from a camera body. A focus condition detector includes a photo-sensor disposed on a plane corresponding to the camera image plane, an electrical detection circuit connected to the photo-sensor, and a detecting optical system for forming an image of at least a part of the object on the surface of the photo-sensor. An aural indicator emits a sound to inform a photographer of the condition of the image formed on the surface of the predetermined focal plane as determined by the focusing condition detector.

대표청구항 ▼

An automatic focusing lens assembly for use with a camera body, comprising: (a) a focus adjustable lens system; (b) an automatic focusing device for automatically focusing said lens system onto an object to be photographed; (c) aural indication means coupled to said automatic focusing device to aura

An automatic focusing lens assembly for use with a camera body, comprising: (a) a focus adjustable lens system; (b) an automatic focusing device for automatically focusing said lens system onto an object to be photographed; (c) aural indication means coupled to said automatic focusing device to aurally indicate the focusing condition of the lens system with respect to the object, said aural indication means being arranged to produce respectively different indications indicative of in-focus and out-of-focus conditions of the lens system; visual indication means coupled to said automatic focusing device to visually indicate the focusing condition of the lens system with respect to the object; and guide means for guiding the visual information generated by said visual indication means into said camera body.