Lens driving device, lens barrel and camera device
A technology of lens driving device and camera device, which is applied to focusing devices, installations, instruments, etc., and can solve problems such as hindering the miniaturization of the lens barrel, increasing the space occupied by the lens driving device, and difficulty in ensuring
Active Publication Date: 2017-01-04
OM DIGITAL SOLUTIONS CORP
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Problems solved by technology
However, in the case of this structure, there is a problem that it is difficult to secure a sufficiently long fitting length
If it is necessary to maintain the conventional structure and ensure a long fitting length, the space occupied by the lens driving device inside the lens barrel will increase, hindering the miniaturization of the lens barrel itself, and causing interference with other lenses, etc. various problems
Method used
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[0025] Hereinafter, the present invention will be described with reference to the illustrated embodiments. One embodiment of the present invention is an example of a case where it is applied to a lens driving device in a lens barrel of an imaging device such as a digital camera or a video camera (hereinafter simply referred to as a camera), and the imaging device is configured to use a photoelectric conversion element etc. sequentially convert the optical image formed by a photographic optical system composed of, for example, a plurality of optical lenses into an image signal, convert the resulting image signal into digital image data representing a still image or a moving image, and record the digital data thus generated In the recording medium, and based on digital image data recorded in the recording medium, a still image or a moving image can be reproduced and displayed using an image display device such as a liquid crystal display device (LCD).
[0026] In this embodiment...
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A lens driving device, a lens barrel to which the lens driving device is applied, and an imaging device are provided. This lens driving device has: yoke (41), and it has the 1st parallel portion (41a) parallel to optical axis in the cross section of optical axis O direction, and in this cross section, is closer to optical axis than the 1st parallel portion and is parallel to optical axis. A second parallel portion (41b) with axes parallel to the first and second parallel portions is magnetically coupled; a magnet (42) is arranged on the first parallel portion and is configured so that the cross section in the direction of the optical axis is parallel to the optical axis and Extending in the optical axis direction; the 1st lens frame (25), it has the 1st coil (43A) that is wound on the 2nd parallel part, is guided by the 1st guide shaft (45); And the 2nd lens frame (26 ), which is configured to have a predetermined distance from the first lens frame, has a second coil (43B) wound on the second parallel part, is guided by a second guide shaft (46), and the first, second The guide shaft is disposed at a position where it does not interfere with the yoke in a cross section perpendicular to the optical axis.
Description
technical field [0001] The present invention relates to a structure of a lens driving device that uses a voice coil motor mechanism in a lens barrel of an imaging device to move each of a plurality of movable lenses included in a photographing optical system in an optical axis direction. Background technique [0002] Conventionally, for example, a digital camera or a video camera, etc., is generally put into practical use and is widely used in an imaging device having an image display device such as a liquid crystal display (LCD), and sequentially converts an optical image formed by an imaging optical system into a As for the image signal, the image signal thus obtained can be stored in a storage medium as image data of a predetermined format, and the image display device can reproduce and display the image data stored in the storage medium as an image. [0003] In this imaging device, there are: a photographing optical system, which is composed of a plurality of optical len...
Claims
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IPC IPC(8): G02B7/04G03B13/32
Inventor 矢野友秀
Owner OM DIGITAL SOLUTIONS CORP