IE790797L - Automatic and manual focussing camera - Google Patents

Automatic and manual focussing camera

Info

Publication number
IE790797L
IE790797L IE79779A IE79779A IE790797L IE 790797 L IE790797 L IE 790797L IE 79779 A IE79779 A IE 79779A IE 79779 A IE79779 A IE 79779A IE 790797 L IE790797 L IE 790797L
Authority
IE
Ireland
Prior art keywords
lens
switch
mode
selector switch
automatic
Prior art date
Application number
IE79779A
Other versions
IE48131B1 (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 IE790797L publication Critical patent/IE790797L/en
Publication of IE48131B1 publication Critical patent/IE48131B1/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
    • G02B7/40—Systems for automatic generation of focusing signals using time delay of the reflected waves, e.g. of ultrasonic waves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Lens Barrels (AREA)
  • Shutters For Cameras (AREA)

Abstract

A camera has an adjustable focus lens (12) and a mode selector switch (SA/M) for selecting manual or automatic focusing. A lens-position switch (Sp) is closed when the lens is in its normal focusing range and is open when the lens is moved to an at- rest position outside the normal focusing range, the at-rest position constituting the lens starting position for an automatic focusing operation. Closure of the mode selector switch and a further switch (S1F) initiates a sequence including acoustic automatic focusing and exposure, followed by automatic return of the lens to the at-rest position. When the mode-selector switch is opened and the camera is manually focused, closure of another switch (S1T) initiates an exposure; thereafter closure of the mode-selector switch will automatically return the lens to the at-rest position and open the lens switch (Sp) connected in series with the mode-selector switch. <IMAGE> [GB2019590A]
IE79779A 1978-04-25 1979-08-08 A camera adapted for automatic and manual focusing IE48131B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US89986378A 1978-04-25 1978-04-25

Publications (2)

Publication Number Publication Date
IE790797L true IE790797L (en) 1979-10-25
IE48131B1 IE48131B1 (en) 1984-10-03

Family

ID=25411664

Family Applications (1)

Application Number Title Priority Date Filing Date
IE79779A IE48131B1 (en) 1978-04-25 1979-08-08 A camera adapted for automatic and manual focusing

Country Status (9)

Country Link
JP (1) JPS54149655A (en)
AT (1) AT373083B (en)
AU (1) AU527724B2 (en)
CA (1) CA1122456A (en)
CH (1) CH654422A5 (en)
DE (1) DE2916570A1 (en)
FR (1) FR2424559A1 (en)
GB (1) GB2019590B (en)
IE (1) IE48131B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58166629U (en) * 1982-04-30 1983-11-07 オリンパス光学工業株式会社 focus detection camera

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2424559A1 (en) 1979-11-23
CH654422A5 (en) 1986-02-14
DE2916570C2 (en) 1988-05-11
DE2916570A1 (en) 1979-10-31
IE48131B1 (en) 1984-10-03
JPS54149655A (en) 1979-11-24
AU4628079A (en) 1979-11-01
ATA310079A (en) 1983-04-15
GB2019590A (en) 1979-10-31
AT373083B (en) 1983-12-12
CA1122456A (en) 1982-04-27
AU527724B2 (en) 1983-03-17
FR2424559B1 (en) 1984-04-27
GB2019590B (en) 1982-07-28

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Legal Events

Date Code Title Description
MM4A Patent lapsed