Lens barrel
AssigneeFUJIFILM Corporation
InventorHibiki Imamura
Life of this patent
Estimating the term…
Abstract
Provided is a lens barrel capable of realizing a smooth operation of an optical system in a lens barrel body. A lens barrel (1) includes a variable-speed zooming lever (40) that is provided along an outer periphery of a lens barrel body (10) and a fixed protrusion portion (50) that is provided along the outer periphery of the lens barrel body (10), in which the variable-speed zooming lever (40) has a first surface (43) and the fixed protrusion portion (50) has a second surface (51). In a case where a position of the variable-speed zooming lever (40) is a reference position, the first surface (43) is flush with the second surface (51), and the variable-speed zooming lever (40) and the fixed protrusion portion (50) are movable relative to each other.
Claims17
A lens barrel comprising:
- a first member that is provided along an outer periphery of a lens barrel body;
- a second member that is provided along the outer periphery of the lens barrel body;
- and
- a zoom speed commander that issues a command for a zoom speed of electric zoom according to relative movement of the first member and the second member,
- wherein the first member has a first surface,
- the second member has a second surface,
- the first surface is flush with the second surface in a case where a position of the first member is a reference position, and the first member and the second member are movable relative to each other,
- the first member is provided along the outer periphery of the lens barrel body in a rotationally movable manner,
- the zoom speed commander has a dead zone where a level difference between the first surface and the second surface is generated by rotational movement of the first member in a first direction or a second direction opposite to the first direction from the reference position, while the zoom speed to be commanded does not change from zero, and
- the first member is rotationally moved within a range of a first stroke angle, and a second stroke angle set in the dead zone is smaller than the first stroke angle.
A lens barrel comprising:
- a first member that is provided along an outer periphery of a lens barrel body;
- a second member that is provided along the outer periphery of the lens barrel body;
- a zoom speed commander that issues a command for a zoom speed of electric zoom according to relative movement of the first member and the second member,
- wherein the first member has a first surface,
- the second member has a second surface,
- the first surface is flush with the second surface in a case where a position of the first member is a reference position, and the first member and the second member are movable relative to each other,
- the first member is provided along the outer periphery of the lens barrel body in a rotationally movable manner,
- the zoom speed commander has a dead zone where a level difference between the first surface and the second surface is generated by rotational movement of the first member in a first direction or a second direction opposite to the first direction from the reference position, while the zoom speed to be commanded does not change from zero,
- the level difference between the first surface and the second surface at a boundary of the dead zone is equal to or larger than a concave-convex that is detectable by a sense of tactile of a finger, and
- the concave-convex is within a range obtained by adding a total of errors including a manufacturing error and an individual difference in detection.
Dependencies are inferred from the claim text.