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Image blur correcting device

A technology of image shake and image, applied in projection devices, printing devices, optics, etc.

Inactive Publication Date: 2009-05-27
VICTOR CO OF JAPAN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in this image shifting device, since the movable refracting element that shifts the image on the imaging surface is set at the initial position of the movement start, the set movement is further changed by an external operation or the like during the shake correction control. Starting from the initial position, the vibration center of the movement amount of the movable refraction element required to correct image shake does not necessarily coincide with the center of the movable range of the movable refraction element

Method used

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Examples

Experimental program
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Deformed example 1—1

[0184] In the video camera 1 in the first embodiment shown in FIG. 1, the lens system 3 is drawn as a single block, but it may also be configured as a multi-block lens group. Fig. 16 is a diagram showing the lens system 3 in Fig. 1, Figure 17 (a) is a figure in which the correction part 2 is arrange|positioned in the lens system 3, Figure 17 (b) is a diagram in which the correction unit 2 is arranged behind the lens system 3 .

[0185] The lens system 3 has first to fourth lens groups 3a to 3d. Behind the lens system 3 , an optical low-pass filter 16 for suppressing noise (spurious signal) and a CCD unit 13 for imaging a subject image are provided, and these are not shown in FIG. 1 .

[0186] In Fig. 1, the correcting part 2 is disposed in front of the lens system 3 as shown in Fig. 16, but it may also be Figure 17 (a) shown in the internal configuration of the lens system 3, in addition can also be as Figure 17 (b) shows the rear arrangement of the lens system 3 . As...

Deformed example 3—1

[0304] In the third embodiment, the configuration is such that when the rotation amount detected by the sensors 8A, 8B matches the rotation control amount calculated by the rotation control amount calculation unit 66A, or the absolute value of the difference between the rotation amount and the rotation control amount becomes the maximum At the same time, a hand shaking control start signal for starting control of the two actuators 4A, 4B is sent to the rotation control unit 66B. On the other hand, in Modification 3-1, the absolute value of the difference between the rotation amount detected by the sensors 8A and 8B and the rotation control amount calculated by the rotation control amount calculation unit 66A falls within a predetermined rotation angle allowance. If it is within the range, or when the absolute value of the difference between the rotation amount and the rotation control amount becomes the minimum, a hand shake control start signal for starting control of both act...

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PUM

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Abstract

An image fluctuation correction device comprises shake detecting means 5 for detecting shake, movable refraction elements 10A, 10B, two rotating means 4A, 4B for rotating the movable refraction elements 10A, 10B, rotating control amount calculating means 6A for calculating the rotating control amount of the two rotating means 4A, 4B, rotating control means 6B for controlling the two rotating means 4A, 4B according to the rotating control amount, rotating amount detecting means 8A, 8B for detecting the rotating amounts of the movable refraction elements 10A, 10B, reverse rotating control means 6C for calculating the reverse rotating control amounts and controlling the two rotating means 4A, 4B according to the reverse rotating control amounts, and camera shake control switching means 6D for transmitting a reverse rotating control start signal to the reverse rotating control means 6C when the camera shake control switching means 6D judges that the rotating amount reaches a rotating limit amount and a camera shake control start signal to the rotating control means 6B when the camera shake control switching means 6D judges that the rotating control amount agrees with the rotating control amount computed immediately before.

Description

technical field [0001] The present invention relates to an image blur correction device which appropriately controls the movement amount of a movable refracting element within a movable range when correcting image blur. Background technique [0002] In Patent Document 1, an image shake correction device is proposed, which uses a detector to detect the shake of an imaging device having a lens formed by injecting a liquid between two glass plates contacted by corrugations as a movable refracting element. The shake of the photographic equipment changes the inclination angle of the movable refracting element to correct image shake. [0003] In this image shake correction device, the larger the movable range of the movable refracting element is, the less likely it is to be affected by the magnitude of image shake or the initial position of the movable refracting element in correcting image shake. The degree of freedom of control becomes larger. [0004] However, in order to inc...

Claims

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Application Information

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IPC IPC(8): G03B5/00
Inventor 大竹与志知
Owner VICTOR CO OF JAPAN LTD