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US 10,257,408 B2Granted
Control apparatus that determines focal points of a plurality of optical systems, image pickup apparatus, image pickup system, lens apparatus, control method, and non-transitory computer-readable storage medium
AssigneeCanon Kabushiki Kaisha
InventorChiaki Inoue
Life of this patent
Estimating the term…
Abstract
A control apparatus includes a focus detector configured to perform focus detection based on an image signal obtained via a first optical system, the first optical system having a shallowest depth of field in a plurality of optical systems having focal lengths different from each other, and a controller configured to perform focus control of the plurality of optical systems based on an output signal from the focus detector.
Claims19
A control apparatus comprising:
- a focus detector configured to perform focus detection based on an image signal obtained via a first imaging optical system, the first imaging optical system having a shallowest depth of field in a plurality of imaging optical systems having focal lengths different from each other;
- and
- a controller configured to:
- obtain an output signal from the focus detector, the output signal being generated based on the image signal obtained via the first imaging optical system, and
- determine, based on the output signal, position information of a second focus unit of a second imaging optical system, the second imaging optical system being different from the first imaging optical system and included in the plurality of imaging optical systems.
2 more elements
An image pickup apparatus comprising:
- an image pickup element configured to photoelectrically convert an optical image formed via at least one of a plurality of imaging optical systems, a plurality of imaging optical systems having focal lengths different from each other;
- a focus detector configured to perform focus detection based on an image signal obtained via a first imaging optical system, the first imaging optical system having a shallowest depth of field in the plurality of imaging optical systems;
- and
- a controller configured to:
- obtain an output signal from the focus detector, the output signal being generated based on the image signal obtained via the first imaging optical system, and
- determine, based on the output signal, position information of a second focus unit of a second imaging optical system, the second imaging optical system being different from the first imaging optical system and included in the plurality of imaging optical systems.
3 more elements
An image pickup system comprising:
- a plurality of imaging optical systems, wherein at least one imaging optical system of the plurality of imaging optical systems has a different focal length from another imaging optical system of the plurality of imaging optical systems;
- an image pickup element configured to photoelectrically convert an optical image formed via at least one of the plurality of imaging optical systems;
- a focus detector configured to perform focus detection based on an image signal obtained via a first imaging optical system, the first imaging optical system having a shallowest depth of field in the plurality of imaging optical systems;
- and
- a controller configured to:
- obtain an output signal from the focus detector, the output signal being generated based on the image signal obtained via the first imaging optical system, and
- determine, based on the output signal, position information of a second focus unit of a second imaging optical system, the second imaging optical system being different from the first imaging optical system and included in the plurality of imaging optical systems.
4 more elements
A lens apparatus comprising:
- a plurality of imaging optical systems having focal lengths different from each other;
- and
- a controller configured to perform focus control of a second imaging optical system, different from the first imaging optical system, of the plurality of imaging optical systems based on position information of a second focus unit of the second imaging optical system, the position information of the second focus unit being determined based on an image signal obtained via a first imaging optical system, the first imaging optical system having a shallowest depth of field in the plurality of imaging optical systems.
A control method comprising the steps of:
- performing focus detection based on an image signal obtained via a first imaging optical system, the first imaging optical system having a shallowest depth of field in a plurality of imaging optical systems having focal lengths different from each other;
- obtaining an output signal based on the image signal obtained via the first imaging optical system, and
- determine, based on the output signal, position information of a second focus unit of a second imaging optical system, the second imaging optical system being different from the first imaging optical system and included in the plurality of imaging optical systems.
A non-transitory computer-readable storage medium storing a program which causes a computer to execute a process comprising:
- performing focus detection based on an image signal obtained via a first imaging optical system, the first imaging optical system having a shallowest depth of field in a plurality of imaging optical systems having focal lengths different from each other;
- obtaining an output signal based on the image signal obtained via the first imaging optical system;
- determine, based on the output signal, position information of a second focus unit of a second imaging optical system, the second imaging optical system being different from the first imaging optical system and included in the plurality of imaging optical systems.
Dependencies are inferred from the claim text.