JPH0353209A - Lens barrel - Google Patents

Abstract

PURPOSE:To constitute the subject lens barrel so that a finger feels operation sense having a suitable resistance by applying frictional resistance generated by a relative motion of a disk spring at the time when a manual focus adjusting member rotates, to a manual operating ring through the manual focus adjusting member. CONSTITUTION:At the time of driving a lens holder 5 by force of a hand finger, a manual operating ring 4 is brought to turning operation with a finger, and a ring 17 overcomes sliding frictional resistance between a disk spring 10 and 11 and rotated centering around an optical axis Z. In this case, a rotary cylinder 13 being a rotor of a driving wave motor 26 stands still, and a roller 18 rolls along an end face of the rotary cylinder 13. As a result, a ring 20 is rotated centering around the optical axis Z, the lens holder 5 moves in the axial direction, while being rotated by a driving arm 22 and manual focusing is executed. In that case, suitable resistance is applied to the manual operating ring 4. In such a way, a user of the lens barrel can feel actually a fact that the manual operating ring 4 is operated surely, by a fingertip.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a lens barrel with a built-in motor, and in particular to a vibration wave motor that has a built-in vibration wave motor and is configured to be able to drive a manual lens. Regarding built-in lens barrels.

[Conventional technology]

Claims (1)

[Claims] 1. A vibration wave motor in an environment concentric with the optical axis of a lens, a pressure member that presses components of the vibration wave motor in a direction parallel to the optical axis, and a vibration wave motor that presses components of the vibration wave motor in a direction parallel to the optical axis. a manual focus adjustment member that is biased toward the lens barrel stationary surface in a direction parallel to the optical axis and is provided so that it can be rotated about the optical axis by a manual focus adjustment operation; In the lens barrel capable of manual lens driving in addition to power lens driving by the vibration wave motor, the pressing member includes at least two disc springs between the manual focus adjustment member and the lens barrel stationary surface. 1. A lens having a frictional resistance adding structure comprising: a frictional resistance adding structure; the pressing member is pressed between the manual focusing member and the lens barrel stationary surface by the pressing force of the pressing member itself; lens barrel. 2. A vibration wave motor in an environment concentric with the optical axis of the lens, a pressure member that presses components of the vibration wave motor in a direction parallel to the optical axis, and a pressure member that presses components of the vibration wave motor in a direction parallel to the optical axis. and a manual focus adjustment member provided so as to be biased toward the stationary surface of the lens barrel and rotated about the optical axis by a manual focus adjustment operation, and the power generated by the vibration wave motor is provided. In a lens barrel capable of driving a lens and manual lens driving using the manual focus adjustment member, a radial direction perpendicular to the optical axis is sandwiched between the end face of the vibration wave motor and the manual focus adjustment member. at least three roller members rotatable about an axis; and an output ring supporting the roller members and rotatable together with the roller member about the optical axis; The member has a frictional resistance adding structure consisting of at least two plate springs between the manual focus adjustment member and the lens barrel stationary surface, and the pressure member is applied to the manual focus adjustment member by the pressing force of the pressure member itself. A lens barrel, characterized in that the focus adjustment member and the lens barrel stationary surface are pressed together.