GB1500800A - Automatic focussing system - Google Patents

Automatic focussing system

Info

Publication number
GB1500800A
GB1500800A GB16881/75A GB1688175A GB1500800A GB 1500800 A GB1500800 A GB 1500800A GB 16881/75 A GB16881/75 A GB 16881/75A GB 1688175 A GB1688175 A GB 1688175A GB 1500800 A GB1500800 A GB 1500800A
Authority
GB
United Kingdom
Prior art keywords
objective
optimum focus
signal
instrument
focusing
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB16881/75A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Geometric Data Corp
Original Assignee
Geometric Data Corp
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 Geometric Data Corp filed Critical Geometric Data Corp
Publication of GB1500800A publication Critical patent/GB1500800A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/24—Base structure
    • G02B21/241—Devices for focusing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microscoopes, Condenser (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
GB16881/75A 1974-04-29 1975-04-23 Automatic focussing system Expired GB1500800A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/465,390 US4012634A (en) 1974-04-29 1974-04-29 Automatic focusing system including quantizing means

Publications (1)

Publication Number Publication Date
GB1500800A true GB1500800A (en) 1978-02-08

Family

ID=23847620

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16881/75A Expired GB1500800A (en) 1974-04-29 1975-04-23 Automatic focussing system

Country Status (5)

Country Link
US (1) US4012634A (https=)
JP (1) JPS50152753A (https=)
CA (1) CA1033973A (https=)
DE (1) DE2518746C2 (https=)
GB (1) GB1500800A (https=)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594058B2 (ja) * 1976-07-23 1984-01-27 株式会社日立製作所 白血球像処理方法
US4085320A (en) * 1976-10-07 1978-04-18 Honeywell Inc. Automatic focus system with loss of correlation inhibit
US4202037A (en) * 1977-04-22 1980-05-06 Der Loos Hendrik Van Computer microscope apparatus and method for superimposing an electronically-produced image from the computer memory upon the image in the microscope's field of view
NL7901721A (nl) * 1979-03-05 1980-09-09 Philips Nv Regelsysteem.
DE2910875C2 (de) * 1979-03-20 1985-11-14 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Verfahren zur automatischen Scharfeinstellung
US4244803A (en) * 1979-11-27 1981-01-13 Aladjem Frederick J Quantitative protein analysis by immunodiffusion
US4360885A (en) * 1980-01-02 1982-11-23 Edgar Albert D Micro-optical tomography
US4468694A (en) * 1980-12-30 1984-08-28 International Business Machines Corporation Apparatus and method for remote displaying and sensing of information using shadow parallax
JPS58153327A (ja) * 1982-03-08 1983-09-12 Toshiba Corp パタ−ン検査装置
US4805225A (en) * 1986-11-06 1989-02-14 The Research Foundation Of The State University Of New York Pattern recognition method and apparatus
US5235375A (en) * 1990-04-12 1993-08-10 Olympus Optical Co., Ltd. Focusing position detecting and automatic focusing apparatus with optimal focusing position calculation method
US5430807A (en) * 1992-12-14 1995-07-04 Gravely Research Corporation Variable magnification color scanning light microscope
US5647025A (en) * 1994-09-20 1997-07-08 Neopath, Inc. Automatic focusing of biomedical specimens apparatus
US5825531A (en) * 1994-12-14 1998-10-20 Nikon Corporation Electrical moving apparatus for microscope
US5619032A (en) * 1995-01-18 1997-04-08 International Remote Imaging Systems, Inc. Method and apparatus for automatically selecting the best focal position from a plurality of focal positions for a focusing apparatus
US5642433A (en) * 1995-07-31 1997-06-24 Neopath, Inc. Method and apparatus for image contrast quality evaluation
JP4281453B2 (ja) * 2003-07-31 2009-06-17 ソニー株式会社 信号処理装置および信号処理方法
JP2006039315A (ja) * 2004-07-28 2006-02-09 Hamamatsu Photonics Kk 自動焦点装置及びそれを用いた顕微鏡装置
DE102006055987B4 (de) * 2006-11-24 2011-06-01 Pentacon Gmbh Foto- Und Feinwerktechnik Verfahren zur Fokussierung optischer Bilderfassungseinrichtungen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2363409A (en) * 1942-06-11 1944-11-21 Bausch & Lomb Fine adjustment mechanism
US3652165A (en) * 1970-05-01 1972-03-28 Polaroid Corp Relative back focus monitoring method and apparatus
DE2045918A1 (de) * 1970-09-17 1972-03-23 Nordmende Einrichtung zur automatischen, moto rischen Scharfeinstellung des Objektivs eines Projektors für optisch elektronisch abzutastende transparente Informations trager
US3824393A (en) * 1971-08-25 1974-07-16 American Express Invest System for differential particle counting
SE373214B (https=) * 1972-03-17 1975-01-27 B Olsen
US3783269A (en) * 1972-06-05 1974-01-01 Honeywell Inc Automatic focus positioning circuit
CA923621A (en) * 1972-10-16 1973-03-27 Burroughs Corporation Multi-stage queuer system
US3806257A (en) * 1973-05-04 1974-04-23 Corning Glass Works Operator viewing optics for a slide classification system
US3883689A (en) * 1973-09-04 1975-05-13 Nasa Servo-controlled intravital microscope system
US3846629A (en) * 1973-12-06 1974-11-05 Honeywell Inc Sensitivity balancing apparatus for photo responsive detecting circuits
JPS5237785A (en) * 1975-09-20 1977-03-23 Agency Of Ind Science & Technol Process for production of photovoltaic elements

Also Published As

Publication number Publication date
DE2518746A1 (de) 1975-11-13
CA1033973A (en) 1978-07-04
US4012634A (en) 1977-03-15
JPS50152753A (https=) 1975-12-09
DE2518746C2 (de) 1984-10-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee