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Position detection device, position detection method, and imaging apparatus

A technology for detecting sensors and devices, applied in measuring devices, using mechanical devices to transfer sensing components, using electric/magnetic devices to transfer sensing components, etc., can solve the problems of high cost of the first detection sensor, and achieve simple structure and simplification. Effect of inspection operation and reduction of manufacturing cost

Inactive Publication Date: 2013-03-06
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in these cases, there is a problem that the first detection sensor may become expensive so that the cost may increase

Method used

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  • Position detection device, position detection method, and imaging apparatus
  • Position detection device, position detection method, and imaging apparatus
  • Position detection device, position detection method, and imaging apparatus

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Embodiment Construction

[0065] Hereinafter, preferred embodiments of the present technology will be described in detail with reference to the accompanying drawings. Note that, in this specification and the appended drawings, structural elements that have substantially the same function and structure are denoted with the same reference numerals, and repeated description of these structural elements is omitted.

[0066] Hereinafter, preferred embodiments of the present technology will be described with reference to the accompanying drawings.

[0067] In the following preferred embodiments, the imaging device according to the embodiment of the present technology is applied to a still camera, the position detection device according to the embodiment of the present technology is applied to a position detection device installed in the still camera, and the position detection device according to the embodiment of the present technology The position detection method of is applied to the position detection me...

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Abstract

The invention relates to a position detection device, a position detection method, and an imaging apparatus. The position detection device includes a first detection sensor that operates in a predetermined direction, outputs a continuously increasing or decreasing signal, and detects an absolute position of a movable lens moved in an optical axis direction, and a second detection sensor that operates in the predetermined direction, outputs a periodically and continuously changing signal, and detects a relative position of the movable lens. The first detection sensor and the second detection sensor operate at different operation speeds.

Description

technical field [0001] The present technology relates to a position detection device, a position detection method, and an imaging device, and more particularly, to a method capable of detecting the relative position of a movable lens by configuring the operating speed of a first detection sensor that detects an absolute position of a movable lens to be different from that of a device that detects a relative position of a movable lens. A position detection device, a position detection method, and an imaging device that detects the position of a movable lens with high resolution and high precision by detecting the operating speed of a second sensor. Background technique [0002] Various imaging devices such as cameras and video cameras are configured such that the position of a movable lens such as a zoom lens moving in the optical axis direction is detected, and the driving of a lens group including the movable lens is controlled with high precision. [0003] Examples of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/12G02B7/04
CPCG01D5/24485G02B27/1006G01D1/00G03B2205/0046G03B17/18H04N5/225G02B7/10G01D2205/22H04N23/00
Inventor 胜又聪一郎大野直志
Owner SONY CORP