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Focus correcting regulator for camera with zoom

A zoom lens and camera technology, applied to cameras, focusing devices, instruments, etc., can solve problems such as changes, achieve high-precision focusing, and improve photography performance

Inactive Publication Date: 2002-12-18
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a lens configuration with high FC sensitivity, the focus position may change greatly due to slight unevenness of the screw mechanism supporting the lens group or the cam groove.

Method used

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  • Focus correcting regulator for camera with zoom
  • Focus correcting regulator for camera with zoom
  • Focus correcting regulator for camera with zoom

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0044] Embodiments of the present invention will be described below with reference to the drawings.

[0045] figure 1 It is a block diagram showing an embodiment of a camera with a zoom lens according to the present invention, and an electrical configuration of the camera.

[0046] Such as figure 1 As shown, the camera with a zoom lens of this embodiment is provided with a CPU 1 as a control means, and this CPU 1 is a microcomputer for performing various controls on the entire camera system of this embodiment.

[0047]The above CPU1 is respectively connected with: EEPROM2, EXT terminal 3, PWSW4, BKSW5, RWSW6, 1RSW7, 2RSW8, ZUSW9, ZDSW10, LCD11, flash meter circuit part 12, distance measuring circuit part 15, photometry circuit part 20, zoom drive circuit part 23, zoom drive signal detection circuit section 25, focus drive circuit section 26, focus drive signal detection circuit section 28, shutter drive circuit section 29, shutter drive signal detection circuit section 31, f...

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PUM

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Abstract

The present invention provides a camera with a zoom lens capable of realizing higher-precision focusing and improving the photographic performance of the camera. The camera calculates the movement amount of the focus lens in the zoom lens based on the focal length information of the zoom lens and the information stored in the memory. The focal length displaying the extremum and the adjustment value at the focal length displaying the extremum obtained by calculating the deviation amount of the focus position of the imaging surface at each focal length, and stored in the memory according to the current focal length information of the zoom lens A plurality of adjustment position focal length data and a plurality of adjustment values ​​are used to calculate the protruding amount of the focus lens.

Description

technical field [0001] The present invention relates to an automatic focus (AF) camera with zoom, in particular to a camera with a zoom lens whose focus position changes with the zoom position, a focus correction device for the camera, and a method for manufacturing the camera. Background technique [0002] Conventionally, a camera with a zoom lens has a structure in which a plurality of lens groups are provided in a zoom lens barrel (lens frame), and the focal length is changed by changing the interval between each lens group, and shooting is performed with an arbitrary image magnification. Furthermore, with a zoom lens, when performing a zooming operation (focal length changing operation), the focal plane is always constant at any focal length position. [0003] This kind of zoom lens, for example, makes the rotating frame rotate in the desired direction, and then a lens group fixed on the mirror frame utilizes a straight-moving screw mechanism to protrude or extend in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B13/36G06F13/10
Inventor 小林芳明
Owner OLYMPUS CORP
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