Lens drive apparatus, lens barrel, and image pickup apparatus
A lens driving device and camera technology, which is applied in the direction of developing and printing devices, focusing devices, focusing devices, etc., can solve problems such as difficult to ensure, long fitting length, hindering the miniaturization of lens barrels, etc.
Active Publication Date: 2015-03-18
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 drive apparatus includes a yoke which has a first parallel portion parallel to an optical axis and a second parallel portion which is located closer to the optical axis than the first parallel portion, the first and the second parallel portions being magnetically coupled, a magnet arranged at the first parallel portion to extend in the optical axis direction, a first lens frame which has a first coil wound around the second parallel portion and which is guided by a first guide shaft, and a second lens frame, which has a second coil wound around the second parallel portion and which is guided by a second guide shaft, and the first and the second guide shafts are arranged at positions so as not to 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
CPCG02B7/102H04N5/2253G02B7/04G03B13/32G03B3/10G03B5/00G03B2205/0046G03B2205/0069H04N23/54
Inventor 矢野友秀
Owner OM DIGITAL SOLUTIONS CORP