CA982386A - Focus adjusting device for optical instruments - Google Patents

Focus adjusting device for optical instruments

Info

Publication number
CA982386A
CA982386A CA138,224A CA138224A CA982386A CA 982386 A CA982386 A CA 982386A CA 138224 A CA138224 A CA 138224A CA 982386 A CA982386 A CA 982386A
Authority
CA
Canada
Prior art keywords
adjusting device
focus adjusting
optical instruments
instruments
optical
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
CA138,224A
Other versions
CA138224S (en
Inventor
Tadao Isono
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.)
Bell and Howell Japan
Original Assignee
Bell and Howell Japan
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 Bell and Howell Japan filed Critical Bell and Howell Japan
Application granted granted Critical
Publication of CA982386A publication Critical patent/CA982386A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G03B13/18—Focusing aids
    • G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Focusing (AREA)
  • Viewfinders (AREA)
  • Escalators And Moving Walkways (AREA)
  • Automatic Focus Adjustment (AREA)
CA138,224A 1971-04-02 1972-03-27 Focus adjusting device for optical instruments Expired CA982386A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2426271U JPS5317790Y2 (en) 1971-04-02 1971-04-02

Publications (1)

Publication Number Publication Date
CA982386A true CA982386A (en) 1976-01-27

Family

ID=12133307

Family Applications (1)

Application Number Title Priority Date Filing Date
CA138,224A Expired CA982386A (en) 1971-04-02 1972-03-27 Focus adjusting device for optical instruments

Country Status (6)

Country Link
JP (1) JPS5317790Y2 (en)
AT (1) AT319031B (en)
CA (1) CA982386A (en)
DE (1) DE2215390A1 (en)
FR (1) FR2132382A1 (en)
GB (1) GB1367260A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49149483U (en) * 1973-04-27 1974-12-24
JPS50121494U (en) * 1974-03-20 1975-10-03

Also Published As

Publication number Publication date
JPS5317790Y2 (en) 1978-05-12
FR2132382A1 (en) 1972-11-17
GB1367260A (en) 1974-09-18
AT319031B (en) 1974-11-25
JPS4724130U (en) 1972-11-17
DE2215390A1 (en) 1972-11-23

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