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US 6,788,888 B1Granted
Optical device and image sensing system
AssigneeCanon Kabushiki Kaisha
InventorTakeshi Idemura
Life of this patent
Estimating the term…
Abstract
An optical device has an optical member that includes the optical device, an operating ring which can be rotated about the optical axis of the optical member and is used to drive the optical member, a switching mechanism which transmits the drive force from a motor drive source to the operating ring, and can be switched between a state for motor-driving the optical member and a state for canceling motor driving of the optical member, and control means for switching the switching mechanism between the motor-driving state and the motor-driving canceling state, and the control means switches the switching mechanism to the state for canceling motor driving on the basis of manual operation of the operating ring when the switching mechanism is motor-driving the optical member.
Claims18
An optical device comprising:
- an optical member;
- an operating ring which can be rotated about an optical axis of said optical member and is capable of driving said optical member;
- a switching mechanism which can transmit a drive force from a motor drive source to said operating ring, and can be switched between a state for motor-driving said optical member and a state for canceling motor driving of said optical member;
- and
- control means capable of switching said switching mechanism between the state for motor-driving said optical member and the state for canceling motor driving of said optical member,
- wherein said control means is configured to switch said switching mechanism to the state for canceling motor driving of said optical member on the basis of manual operation of said operating ring when said switching mechanism is set in the state for motor-driving said optical member by detecting a signal of the motor drive source.
3 more elements
An image sensing system comprising:
- an optical member;
- an operating ring which can be rotated about an optical axis of said optical member and is capable of driving said optical member;
- a switching mechanism which can transmit a drive force from a motor drive source to said operating ring, and can be switched between a state for motor-driving said optical member and a state for canceling motor driving of said optical member;
- control means capable of switching said switching mechanism between the state for motor-driving said optical member and the state for canceling motor driving of said optical member;
- and
- an image sensing device which is mounted on the optical device to be able to communicate therewith, and senses an image;
- wherein said control means is configured to switch said switching mechanism to the state for canceling motor driving of said optical member on the basis of manual operation of said operating ring when said switching mechanism is set in the state for motor-driving said optical member by detecting a signal of the motor drive source.
4 more elements
An optical device comprising:
- an optical member;
- an operating ring which can be rotated about an optical axis of said optical member and is capable of driving said optical member;
- a switching mechanism which can transmit a drive force from a motor drive source to said operating ring, and can be switched between a state for motor-driving said optical member and a state for canceling motor driving of said optical member;
- and
- control means capable of switching said switching mechanism between the state for motor-driving said optical member and the state for canceling motor driving of said optical member, said control means configured to switch said switching mechanism to the state for canceling motor driving of said optical member on the basis of manual operation of said operating ring when said switching mechanism is set in the state for motor-driving said optical member by detecting a difference between a drive state of said optical member corresponding to a drive command, and an actually driven state of said optical member.
2 more elements
An image sensing system comprising:
- an optical member;
- an operating ring which can be rotated about an optical axis of said optical member and is capable of driving said optical member;
- a switching mechanism which can transmit a drive force from a motor drive source to said operating ring, and can be switched between a state for motor-driving said optical member and a state for canceling motor driving of said optical member;
- control means configured to switch switching said switching mechanism between the state for motor-driving said optical member and the state for canceling motor driving of said optical member on the basis of manual operation of said operating ring when said switching mechanism is set in the state for motor-driving said optical member;
- and
- an image sensing device which is mounted on the optical device to be able to communicate therewith, and senses an image;
- wherein said control means detects manual operation of said operating ring on the basis of a difference between a drive state of said optical member corresponding to a drive command, and an actually driven state of said optical member.
4 more elements
Dependencies are inferred from the claim text.