Unlock instant, AI-driven research and patent intelligence for your innovation.

optical equipment

A kind of optical equipment and optical technology, applied in the direction of optics, optical components, camera focusing devices, etc., can solve the problems of large size, large size, high price, etc.

Active Publication Date: 2016-02-10
OM DIGITAL SOLUTIONS CORP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in Japanese Patent Application Laid-Open No. 2006-65033, although an analog position detection element is used, the analog position detection element is generally expensive and large in size, which leads to high cost and enlargement of the zoom lens device.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • optical equipment
  • optical equipment
  • optical equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0044] figure 1 A block diagram showing the structure of an interchangeable lens as an optical device. figure 2 A block diagram showing the structure of the electrical system. The interchangeable lens 1 can be attached to and detached from the camera body 2 . An imaging element 2 a is provided on the camera body 2 .

[0045] The exterior of the interchangeable lens 1 is provided with a manual focus (MF) ring 3 , a ring-shaped zoom function switching operation member 4 , and a zoom lock switch (zoom lock SW) 5 . The zoom function switching operation member 4 is movable in the same direction as the optical axis P (arrow A direction), and is rotatable in the circumferential direction of the interchangeable lens 1 (arrow B direction).

[0046] The interchangeable lens 1 is provided with a first zoom group 6 , a second zoom group (2G: first lens group) 7 , a third zoo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides an optical device, which includes first and second lens groups, position detection units for the first and second lens groups, a storage unit, and a control unit. The control unit controls the movement of the second lens group based on the position information of the first lens group detected by the first lens group position detection unit and the positional relationship information stored in the storage unit. , and determine whether the control state of the second lens group is abnormal based on the control position information when the movement control is performed and the position of the second lens group detected by the second lens group position detection unit.

Description

[0001] This application claims priority based on prior application No. 2011-176266 filed in Japan on Aug. 11, 2011, the entire contents of which are hereby incorporated by reference. technical field [0002] The present invention relates to an optical device having a zoom function for changing the focal length of a photographic optical system. Background technique [0003] As a zoom lens device, a device that moves a zoom lens by a stepping motor is known. As a technology of a zoom lens device, there is, for example, Japanese Patent Laid-Open No. 2006-65033. Japanese Patent Application Laid-Open No. 2006-65033 discloses that an analog position detection element is used to detect the position of a zoom lens, and to detect a stepout of a stepping motor during movement of the zoom lens. [0004] However, although an analog position detection element is used in JP 2006-65033 A, the analog position detection element is generally expensive and large in size, resulting in high cos...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G03B13/34G02B7/10
CPCG02B15/142
Inventor 大川聪高桥笃史荒川丰
Owner OM DIGITAL SOLUTIONS CORP