Lens apparatus
AssigneeCanon Kabushiki Kaisha
InventorsAtsuto Noda, Taro Murakami, Kiyoshi Nitto, Takumi Uehara, Hiroki Ito
Life of this patent
Estimating the term…
Abstract
A lens apparatus includes a lens disposed closest to an object, a holder holding the lens, a cover having a first opening to expose the lens when viewed from an optical axis direction of the lens and being positioned with the holder in the optical axis direction, and an exterior member having a second opening to engage with an outer diameter of the cover. A first gap in a diameter direction orthogonal to the optical axis direction formed between the holder and the cover is larger than a second gap in the diameter direction formed between the exterior member and the cover.
Claims26
A lens apparatus comprising:
- a first optical system;
- a second optical system;
- a lens mount configured to be attached to a camera body;
- a circuit board configured to communicate with the camera body;
- and
- a base member to which the first and second optical systems and the circuit board are attached,
- wherein the first and second optical systems are each a bending optical system having a first reflective surface and a second reflective surface, respectively, and having, in order from an object side, a first optical axis, a second optical axis of light reflected at the first reflective surface, and a third optical axis of light reflected at the second reflective surface,
- wherein the circuit board is disposed between the first optical axes of the first and second optical systems, on the object side of the second optical axis, and on an axis of the lens mount, and
- wherein the first and second optical systems and the circuit board are movable integrally with the base member in a first optical axis direction relative to the lens mount.
A lens apparatus comprising:
- a lens disposed closest to an object;
- a holder holding the lens;
- a mount for attaching the lens apparatus to an imaging apparatus;
- a circuit board configured to communicate with the imaging apparatus;
- and
- a base member where a first optical system, a second optical system, and the circuit board are attached,
- wherein the lens has a first lens included in the first optical system and a second lens included in the second optical system,
- wherein each of the first optical system and the second optical system is a bending optical system having a first reflective surface and a second reflective surface, and includes, in order from an object side, a first optical axis, a second optical axis of light reflected by the first reflective surface, and a third optical axis of light reflected by the second reflective surface,
- wherein at least one of electric elements provided on the circuit board is arranged inside a diameter of the mount when viewed from the axis direction of the mount, and
- wherein the first optical system, the second optical system, and the circuit board can move integrally with the base member in a first optical direction relative to the mount.
Dependencies are inferred from the claim text.