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Lens barrel

A lens and lens barrel technology, applied in the direction of instruments, installation, optics, etc., can solve the problems that the camera has not been practical and the mechanism is complicated

Inactive Publication Date: 2013-05-15
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the mechanism itself becomes complicated
[0009] However, in conventional interchangeable lens cameras capable of photographing still images and moving images, there has been no camera with a lens driving mechanism configured to allow zooming operations using electric drive, and also to perform zooming operations based on manual operations by performing a switching operation. get practical

Method used

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  • Lens barrel
  • Lens barrel
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Examples

Experimental program
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Embodiment Construction

[0053] One embodiment of the present invention exemplifies an interchangeable zoom lens barrel (hereinafter simply referred to as a lens barrel) applied to a digital camera (hereinafter simply referred to as a camera) configured, for example, by using a solid-state imaging device paired with an optical lens The formed optical image is photoelectrically converted, the image signal thus obtained is converted into digital image data representing a still image or a moving image, and the digital data generated in this way is recorded on a recording medium, and the digital image data recorded on the recording medium can be A still image or a moving image is reproduced and displayed on a display device.

[0054] In addition, in the present embodiment, the optical axis of the photographing optical system of the lens barrel is denoted by symbol O. And in the direction along the optical axis O, the subject side at the position opposite to the front surface of the lens barrel is referred...

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Abstract

The invention provides a lens barrel, which comprises a movable frame (33) capable of moving along the direction of an optical axis; a stepping motor (41) used for driving the movable frame along the direction of the optical axis; a spiral member (41b) driven to rotate along with the rotation of the stepping motor; a spiral gear (41d) arranged at the end part of the spiral member and driven to rotate along with the rotation of the spiral member; a nut member (45) kept in a non-rotation state and screwed to the spiral member, wherein the nut member is used for driving the movable frame to perform the pressing movement along a direction the same with the rotation movement of the spiral member along the direction of the optical axis; and an external rotation operating ring (24) used for switching the lens barrel between a first state and a second state and provided with a driving gear (23) capable of being driven to rotate by the external operation.

Description

technical field [0001] The invention relates to a lens barrel, in particular to a lens barrel with a drive mechanism switchable between manual operation drive and electric drive. Background technique [0002] In the past, lens barrels used in cameras and the like for obtaining images were equipped with a focus adjustment mechanism configured to switch between manual focus operation based on manual operation and automatic focus operation using electric drive. - Publication No. 208633 and others have been disclosed and put into practical use. [0003] On the other hand, in cameras etc. in recent years, technologies that are configured to record sound while recording photographic graphics, and technology that can also photograph and record moving images accompanied by sound recording in addition to still image photographing and recording actions have become popular. technology. [0004] When using such an existing camera, etc., specifically, a camera capable of shooting still...

Claims

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Application Information

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IPC IPC(8): G02B7/04G02B7/14
Inventor 荒川丰村山恭二
Owner OLYMPUS CORP