Camera
AssigneeOlympus Optical Co., Ltd.
InventorShinichi Kodama
Life of this patent
Estimating the term…
Abstract
In a camera with a finder device which is capable of diopter adjustment, a visual axis detection unit detects the visual axis direction and the fundus imaging state of an observer, a multi-distance measurement unit measures distances to a plurality of points in a photographing frame, a diopter driving unit adjusts the imaging position, and a diopter controller drives the diopter driving unit in accordance with the outputs from the visual axis detection unit and the multi-distance measurement unit. Therefore, since diopter correction is attained based on distance measurement information corresponding to visual axis information, a finder image in which an object at an observation position of an observer is always in focus can be realized.
Claims28
A camera with a finder device which is capable of diopter adjustment, comprising:
- detection means, arranged in the finder device, for detecting a visual axis direction and a fundus imaging state of an observer;
- multi-distance measurement means for measuring distances to a plurality of positions in a photographing frame;
- diopter correction means for adjusting a primary imaging position where an object image is focused by an objective optical system;
- and
- driving means for driving said diopter correction means in accordance with an output from said detection means and an output from said multi-distance measurement means.
A camera with a finder device which is capable of diopter adjustment and does not include a mat in an optical path, comprising:
- detection means, arranged in the finder device, for detecting a visual axis direction and a fundus imaging state of an observer;
- multi-distance measurement means for measuring distances to a plurality of positions in a photographing frame;
- magnification correction means for adjusting an image magnification of the finder device;
- and
- driving means for driving said magnification correction means in accordance with an output from said detection means and an output from said multi-distance measurement means.
A camera which includes multi-distance measurement means for measuring distances to a plurality of points in a photographing frame, and visual axis detection means for detecting a visual axis direction of a photographer, comprising:
- a finder optical system including diopter correction means;
- driving means for driving said diopter correction means;
- and
- control means for controlling said driving means on the basis of an output from said visual axis detection means and an output from said multi-distance measurement means.
A camera having multi-distance measurement means for measuring distances to a plurality of points in a photographing frame, comprising:
- a finder optical system including a diopter correction means;
- visual axis detection means for detecting a visual axis direction of a observer;
- blink detecting means for detecting blinking so as to discriminate reliability of a detection process of said visual axis detection means;
- and
- diopter correction means for setting a focus adjustment range of said finder optical system on the basis of an output from said multi-distance measurement means, an output from said visual axis detection means, and an output from said blink detecting means, and for performing correction.
A camera having visual axis detection means for detecting a visual axis direction of an observer, and multi-distance measurement means for measuring distances to a plurality of points in a photographing frame, comprising:
- a finder optical system including a diopter correction means;
- driving means for driving said diopter correction means;
- and
- a diopter correction device for setting a focus adjustment range of said finder optical system on the basis of an output from said visual axis detection means and an output from said multi-distance measurement means, and correcting an imaging position of an object image.
A camera having multi-distance measurement means for measuring distances to a plurality of points in a photographing frame, and visual axis detection means for detecting a visual axis direction of an observer, comprising:
- an optical finder device including a diopter correction means for determining framing;
- diopter detection means, arranged in said finder device, for detecting a a diopter value which is detected by a diopter detecting device with respect to an observer;
- and
- driving means for driving said diopter correction means to cause an imaging position of an object to fall within a focus adjustment range of an observer's eye on the basis of the detected diopter value and at least one of an output from said multi-distance measurement means and an output from said visual axis detection means.
Dependencies are inferred from the claim text.