IE48251B1 - Focus control system for variable focus lenses - Google Patents

Focus control system for variable focus lenses

Info

Publication number
IE48251B1
IE48251B1 IE256378A IE256378A IE48251B1 IE 48251 B1 IE48251 B1 IE 48251B1 IE 256378 A IE256378 A IE 256378A IE 256378 A IE256378 A IE 256378A IE 48251 B1 IE48251 B1 IE 48251B1
Authority
IE
Ireland
Prior art keywords
lens
switch
region
camera
gate
Prior art date
Application number
IE256378A
Other languages
English (en)
Other versions
IE782563L (en
Original Assignee
Polaroid 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 Polaroid Corp filed Critical Polaroid Corp
Publication of IE782563L publication Critical patent/IE782563L/xx
Publication of IE48251B1 publication Critical patent/IE48251B1/en

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
    • G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
    • G02B7/32—Systems for automatic generation of focusing signals using parallactic triangle with a base line using active means, e.g. light emitter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Lens Barrels (AREA)
  • Automatic Focus Adjustment (AREA)
IE256378A 1977-12-30 1978-12-28 Focus control system for variable focus lenses IE48251B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86585277A 1977-12-30 1977-12-30

Publications (2)

Publication Number Publication Date
IE782563L IE782563L (en) 1979-06-30
IE48251B1 true IE48251B1 (en) 1984-11-14

Family

ID=25346383

Family Applications (1)

Application Number Title Priority Date Filing Date
IE256378A IE48251B1 (en) 1977-12-30 1978-12-28 Focus control system for variable focus lenses

Country Status (9)

Country Link
JP (1) JPS54109837A (de)
AT (1) AT377101B (de)
AU (1) AU525816B2 (de)
CA (1) CA1122455A (de)
CH (1) CH637222A5 (de)
DE (1) DE2856573A1 (de)
FR (1) FR2413680A1 (de)
GB (1) GB2013353B (de)
IE (1) IE48251B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477292A1 (fr) * 1980-03-03 1981-09-04 Polaroid Corp Systeme de mise au point pour appareil de prise de vues photographiques
JPS59125718A (ja) * 1983-01-06 1984-07-20 Canon Inc 複写装置
WO2018139168A1 (ja) * 2017-01-27 2018-08-02 富士フイルム株式会社 カメラシステム、カメラ、レンズ、アクセサリー、及び、カメラシステムのアクセサリー検出方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2105288B2 (de) * 1970-02-14 1973-03-15 Kabushiki Kaisha Ricoh, Tokio Kamera mit automatischer scharfeinstellung
US3917395A (en) * 1973-06-28 1975-11-04 Honeywell Inc Control circuit for photographic apparatus
CA1099554A (en) * 1976-10-04 1981-04-21 Polaroid Corporation Automatic range finding and focussing camera

Also Published As

Publication number Publication date
AT377101B (de) 1985-02-11
ATA1279A (de) 1984-06-15
JPS54109837A (en) 1979-08-28
FR2413680A1 (fr) 1979-07-27
DE2856573A1 (de) 1979-07-05
AU4306279A (en) 1979-07-05
FR2413680B1 (de) 1983-11-18
AU525816B2 (en) 1982-12-02
CH637222A5 (de) 1983-07-15
GB2013353B (en) 1982-05-19
GB2013353A (en) 1979-08-08
IE782563L (en) 1979-06-30
CA1122455A (en) 1982-04-27

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