[go: up one dir, main page]

TW200710465A - Optical device - Google Patents

Optical device

Info

Publication number
TW200710465A
TW200710465A TW095119725A TW95119725A TW200710465A TW 200710465 A TW200710465 A TW 200710465A TW 095119725 A TW095119725 A TW 095119725A TW 95119725 A TW95119725 A TW 95119725A TW 200710465 A TW200710465 A TW 200710465A
Authority
TW
Taiwan
Prior art keywords
focusing lens
focusing
step position
distance range
optical device
Prior art date
Application number
TW095119725A
Other languages
Chinese (zh)
Other versions
TWI300495B (en
Inventor
Kyozo Saito
Masashi Kato
Shoichi Kyoya
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Publication of TW200710465A publication Critical patent/TW200710465A/en
Application granted granted Critical
Publication of TWI300495B publication Critical patent/TWI300495B/zh

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Automatic Focus Adjustment (AREA)
  • Studio Devices (AREA)
  • Focusing (AREA)

Abstract

The present invention provides an optical device achieving the effect of shortening time taken to control automatic focusing. The optical device is equipped with: an imaging device 2 receiving transmitted light through a focusing lens 1 and outputting an imaging signal; an arithmetic calculation means 4 arithmetically calculating a focus evaluated value on the basis of the imaging signal from the imaging device 2; and a driving means 3 moving the focusing lens 1 to a predetermined step position in an optical axis direction according to the focus evaluated value. The focusing lens 1 has a focusing distance range set within the range of the depth of field at each step position, and the step position of the focusing lens by the driving means 3 is set so that the focusing distance range of the focusing lens 1 at such a step position is not overlapped on the focusing distance range of the focusing lens 1 at a step position separate by two steps.
TW095119725A 2005-07-19 2006-06-02 Optical device TW200710465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005209004A JP2007025381A (en) 2005-07-19 2005-07-19 Optical device

Publications (2)

Publication Number Publication Date
TW200710465A true TW200710465A (en) 2007-03-16
TWI300495B TWI300495B (en) 2008-09-01

Family

ID=37656723

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095119725A TW200710465A (en) 2005-07-19 2006-06-02 Optical device

Country Status (4)

Country Link
JP (1) JP2007025381A (en)
KR (1) KR20070011133A (en)
CN (1) CN100510938C (en)
TW (1) TW200710465A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011009929A (en) * 2009-06-24 2011-01-13 Sony Corp Movable-mechanical-section controlling device, method of controlling movable mechanical section, and program
JP5621325B2 (en) * 2010-05-28 2014-11-12 ソニー株式会社 FOCUS CONTROL DEVICE, FOCUS CONTROL METHOD, LENS DEVICE, FOCUS LENS DRIVING METHOD, AND PROGRAM
CN103237173A (en) * 2013-04-28 2013-08-07 中国空间技术研究院 Adaptive quick focusing device and method for optical camera
CN105812623B (en) * 2014-12-30 2018-10-16 深圳超多维科技有限公司 Microlens array imaging device and imaging method
CN106154688B (en) * 2015-04-07 2021-04-16 中兴通讯股份有限公司 A method and device for automatic focusing
KR101993670B1 (en) * 2016-03-17 2019-06-27 주식회사 이오테크닉스 Photographing method and object alignment method using the photographing method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0514794A (en) * 1991-07-08 1993-01-22 Kyocera Corp Electronic still camera
JP3345900B2 (en) * 1992-01-17 2002-11-18 カシオ計算機株式会社 Auto focus device
JPH0773341B2 (en) * 1993-02-12 1995-08-02 株式会社日立製作所 Automatic focusing device
JP2000330009A (en) * 1999-05-20 2000-11-30 Sharp Corp Automatic focusing device for digital camera, and digital camera equipped with same
JP4320843B2 (en) * 1999-05-31 2009-08-26 富士フイルム株式会社 Autofocus method, apparatus and storage medium
JP2001042207A (en) * 1999-07-29 2001-02-16 Olympus Optical Co Ltd Electronic camera
JP2002122776A (en) * 2000-10-17 2002-04-26 Sharp Corp Autofocus controller, digital still camera and digital video camera equipped with the same, autofocus control method and recording medium having autofocus control program recorded thereon

Also Published As

Publication number Publication date
CN1900807A (en) 2007-01-24
CN100510938C (en) 2009-07-08
TWI300495B (en) 2008-09-01
KR20070011133A (en) 2007-01-24
JP2007025381A (en) 2007-02-01

Similar Documents

Publication Publication Date Title
TW200617561A (en) Camera device
TW200728767A (en) Laser optical device
TW200710465A (en) Optical device
TW200628868A (en) Image inspection system for correcting focal position in autofocusing
WO2008027316A3 (en) Auto-focusing method for an automatic data collection device
TW200600830A (en) Three-dimensional imaging device
EP2223770A3 (en) Laser Material Processing System
WO2008105780A3 (en) Optical rangefinder for an electro-active lens
TW200742923A (en) Method of auto focus
EP1746448A3 (en) Microscope objective lens
TW200713622A (en) Wafer scale image module
WO2002063390A3 (en) An illumination engine for a projection display using a tapered light pipe
TW200619806A (en) Observation apparatus having focal point control mechanism
WO2011119846A3 (en) Fade out optical light masking projector system
ATE320618T1 (en) CAMERA SYSTEM
FR3049534B1 (en) VISION DEVICE FOR A MOTOR VEHICLE
WO2016117796A3 (en) Optical frequency and intensity modulation laser absorption spectroscopy apparatus, and optical frequency and intensity modulation laser absorption spectroscopy method
EP1892495A3 (en) Device and method for electronic evaluation of hits
TW200712597A (en) Optical module of a light source module and a sensor module positioned on a frame
ATE498853T1 (en) LENS DRIVE SYSTEM
EP1469463A4 (en) OPTICAL DISK UNIT
TW200717172A (en) Photo module capable of adjusting distance between camera module and sensor unit
TW200708763A (en) LED light concentrating system using imaging method
TW200707061A (en) Projecting apparatus and method of adjusting light source's brightness thereof
RU2007144809A (en) DEVICE FOR IMPROVING THE QUALITY OF CONTROL OF ROLLING STOCK