Image-capturing device having multiple optical systems
View Patent ↗In an image-capturing device having multiple optical systems, power consumption is reduced and operativity by the user is improved. The image-capturing device has an optical system having a relatively wide angle of view, and an optical system having a relatively narrow angle of view. An image processing system displays an image obtained by the optical system on a display device, crops, from the image of the optical system, an image corresponding to an image-capturing area according to an amount of operation of a zoom operation lever by the user, and displays the cropped image on the display device. When the user operates a release button, the image processing system and a lens control system drive the optical system to an angle of view corresponding to the image-capturing area and stores an image obtained by the optical system in a storage device.
1. An image-capturing device having multiple optical systems, the image-capturing device including a first optical system having a relatively wide angle of view, a second optical system placed in a certain distance from the first optical system and having a relatively narrow angle of view, and a display unit which displays an image obtained by the first optical system, the image-capturing device comprising:
a first operation unit which inputs a desired angle of view;
a display control unit which crops, from an image displayed on the display unit, an image-capturing region calculated in consideration of parallax determined from a desired angle of view input from the first operation unit and a distance between an optical axis of the first optical system and an optical axis of the second optical system and displays the cropped image-capturing region;
a second operation unit which inputs an image-capturing instruction; and
a storage unit which stores an image obtained by the second optical system corresponding to the image-capturing region as a captured image in response to an image-capturing instruction input from the second operation unit.
2. An image-capturing device having multiple optical systems according to claim 1 , wherein:
a crossing angle between the optical axes of the first optical system and the second optical system is set to ½ of a difference in angle of view at the widest angles of view of the first optical system and the second optical system.
3. An image-capturing device having multiple optical systems according to claim 1 further comprising:
a driving unit which changes the crossing angle between optical axes by driving at least one of the optical axes of the first optical system and the second optical system when a distance to a target becomes a predetermined value or smaller.
4. An image-capturing device having multiple optical systems according to claim 1 wherein:
The display control unit crops and displays the image-capturing region without considering the parallax between the first optical system and the second optical system when the desired angle of view input from the first operation unit falls within an optical zoom range of the first optical system and crops and displays the image-capturing region considering the parallax between the first optical system and the second optical system when the desired angle of view input from the first operation unit falls within an optical zoom range of the second optical system; and
the storage unit stores an image obtained by the first optical system corresponding to the image-capturing region as the captured image when the desired angle of view input from the first operation unit falls within the optical zoom range of the first optical system and stores an image obtained by the second optical system corresponding to the image-capturing region as the captured image when the desired angle of view input from the first operation unit falls within the optical zoom range of the second optical system.
5. An image-capturing device having multiple optical systems according to claim 4 , wherein:
the optical zoom range of the first optical system and the optical zoom range of the second optical system differ from each other with a gap therebetween;
the display control unit crops an image corresponding to the image-capturing region and electronically zooms the cropped image without considering the parallax between the first optical system and the second optical system when the desired angle of view input from the first operation unit falls within the gap; and
the storage unit stores, as the captured image, an image which corresponds to the image-capturing region, which is obtained by the first optical system, and which is electronically zoomed, when the desired angle of view input from the first operation unit falls within the gap.
6. An image-capturing device having multiple optical systems according to claim 4 , wherein:
the optical zoom range of the first optical system and the optical zoom range of the second optical system at least partially overlap each other;
the display control unit crops and displays an image corresponding to the image-capturing region without considering the parallax between the first optical system and the second optical system when the desired angle of view input from the first operation unit falls within the overlapped range; and
the storage unit stores, as the captured image, an image obtained from the first optical system corresponding to the image-capturing region when the desired angle of view input from the first operation unit falls within the overlapped range.