Lens device, lens system, imaging device, movable lens operation device, lens driving method, and lens driving program

Patent metadata

Field	Value
Publication number	US-11754804-B2
Application number	US-202217670508-A
Country	US
Kind code	B2
Filing date	Feb 14, 2022
Priority date	Mar 31, 2016
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

A lens device includes: a movable lens capable of being moved in a direction of an optical axis and configured to be moved by an operating member driven by an operating member driving unit; an optical member that reflects a portion of light having passed through the movable lens; a target position information acquiring unit that acquires information of a target position of the movable lens by calculating the target position based on the reflected light; and a movable lens driving unit that performs first driving for moving the movable lens based on a position of the operating member detected by an operating member position detection unit, and the operating member driving unit drives the operating member based on the information of the target position.

First claim

What is claimed is:

1. A lens device comprising:
a movable lens capable of being moved in a direction of an optical axis, wherein the movable lens is configured to be moved by an operating member driven by an operating member driving unit;
an optical member that reflects a portion of light having passed through the movable lens;
a target position information acquiring unit that acquires information of a target position of the movable lens by calculating the target position based on the reflected light;
a movable lens driving unit that selectively performs: first driving for moving the movable lens based on a position of the operating member detected by an operating member position detection unit; and second driving for moving the movable lens to the target position based on the information of the target position; and
an operation presence/absence determining unit that determines whether the operating member is operated,
wherein the movable lens driving unit performs the first driving in a case where the operating member is operated, and performs the second driving in a case where the operating member is not operated, and
the operating member driving unit drives the operating member based on the information of the target position in each of a case where the operating member is operated and a case where the operating member is not operated, and in a case where the operating member is operated, the operating member driving unit makes a driving force for the operating member smaller than in a case where the operating member is not operated,
wherein the operating member is driven at all times during the first driving and the second driving.

2. The lens device according to claim 1 ,
wherein the operation presence/absence determining unit determines that the operating member is operated in a case where a difference between the position of the operating member based on the information of the target position and the position of the operating member detected by the operating member position detection unit is equal to or greater than a threshold value.

Assignees

• Fujifilm Corp

Inventors

• Wada Tetsu

Classifications

• G02B7/08 Primary

  adapted to co-operate with a remote control mechanism · CPC title

• G02B7/09 Primary

  adapted for automatic focusing or varying magnification · CPC title

• G03B3/10

  Power-operated focusing · CPC title

• G02B7/04

  with mechanism for focusing or varying magnification · CPC title

• G02B7/102

  controlled by a microcomputer (cameras with interchangeable lenses G03B17/14) · CPC title