Stereoscopic image capture device and method
AssigneeFUJIFILM Corporation
InventorYoichi IWASAKI
Life of this patent
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Abstract
A stereoscopic image capture device comprising: a single imaging optical system; an imaging element that forms pupil-divided object images; a diaphragm that restricts a light flux that enters into the imaging element; and a diaphragm control device, wherein, when focal lengths before and after adjusting the focal length of the imaging optical system are assumed to be f1 and f2 and the F value of the diaphragm before adjusting the focal length of the imaging optical system is assumed to be FNo1, the diaphragm control device performs control such that an F value of FNo2 after adjusting the focal length of the imaging optical system becomes an F value that can be set according to a following equation: FNo 2 = FNo 1 * ( f 2 f 1 ) 2 .
Claims16
A stereoscopic image capture device comprising:
- a single imaging optical system that can adjust a focal length;
- an imaging element that forms pupil-divided object images passing through different regions of the imaging optical system, photoelectrically converts the object images passing through the different regions and outputs a plurality of parallax images with different parallaxes;
- a diaphragm that restricts a light flux that enters into the imaging element;
- and
- a diaphragm control device for controlling an F value of the diaphragm based on a focal length of the imaging optical system before and after adjusting the focal length of the imaging optical system,
- wherein, when focal lengths before and after adjusting the focal length of the imaging optical system are assumed to be f1 and f2 and the F value of the diaphragm before adjusting the focal length of the imaging optical system is assumed to be FNo1, the diaphragm control device performs control such that an F value of FNo2 after adjusting the focal length of the imaging optical system becomes an F value that can be set according to a following equation:
- FNo
-
-
- 2
- =
- FNo
-
-
- 1
- *
- (
- f
-
-
- 2
- f
-
-
- 1
- )
- 2
- .
- [
- Equation
-
-
- 1
- ]
A stereoscopic image capture method in a stereoscopic image capture device comprising:
- a single imaging optical system that can adjust a focal length;
- an imaging element that forms pupil-divided object images passing through different regions of the imaging optical system, photoelectrically converts the object images passing through the different regions and outputs a plurality of parallax images with different parallaxes;
- a diaphragm that restricts a light flux that enters into the imaging element;
- and
- a diaphragm control device for controlling an F value of the diaphragm based on a focal length of the imaging optical system before and after adjusting the focal length of the imaging optical system,
- wherein, when focal lengths before and after adjusting the focal length of the imaging optical system are assumed to be f1 and f2 and the F value of the diaphragm before adjusting the focal length of the imaging optical system is assumed to be FNo1, the diaphragm control device performs control such that an F value of FNo2 after adjusting the focal length of the imaging optical system becomes an F value that can be set according to a following equation:
- FNo
-
-
- 2
- =
- FNo
-
-
- 1
- *
- (
- f
-
-
- 2
- f
-
-
- 1
- )
- 2
- .
- [
- Equation
-
-
- 1
- ]
Dependencies are inferred from the claim text.