CA979697A - Optical system - Google Patents

Optical system

Info

Publication number
CA979697A
CA979697A CA172,992A CA172992A CA979697A CA 979697 A CA979697 A CA 979697A CA 172992 A CA172992 A CA 172992A CA 979697 A CA979697 A CA 979697A
Authority
CA
Canada
Prior art keywords
optical system
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
CA172,992A
Other languages
English (en)
Other versions
CA172992S (en
Inventor
David G.A. Demaine
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.)
Rank Organization Ltd
Original Assignee
Rank Organization 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 Rank Organization Ltd filed Critical Rank Organization Ltd
Application granted granted Critical
Publication of CA979697A publication Critical patent/CA979697A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
CA172,992A 1972-06-02 1973-06-01 Optical system Expired CA979697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2579272A GB1386175A (en) 1972-06-02 1972-06-02 Lenses

Publications (1)

Publication Number Publication Date
CA979697A true CA979697A (en) 1975-12-16

Family

ID=10233385

Family Applications (1)

Application Number Title Priority Date Filing Date
CA172,992A Expired CA979697A (en) 1972-06-02 1973-06-01 Optical system

Country Status (8)

Country Link
JP (1) JPS4952634A (xx)
CA (1) CA979697A (xx)
DD (1) DD104858A5 (xx)
DE (1) DE2328286A1 (xx)
FR (1) FR2186664B1 (xx)
GB (1) GB1386175A (xx)
IT (1) IT986404B (xx)
SE (1) SE391589B (xx)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51144229A (en) * 1975-06-05 1976-12-11 Konishiroku Photo Ind Co Ltd Bright wide-angle lens with many surrounding quantities of light
US4061419A (en) * 1976-03-03 1977-12-06 Xerox Corporation Variable magnification lens system
US4056308A (en) * 1976-03-03 1977-11-01 Xerox Corporation Variable focal length reflector lens system
CH621414A5 (xx) * 1977-11-15 1981-01-30 Gretag Ag
JPS56159614A (en) * 1980-05-13 1981-12-09 Asahi Optical Co Ltd Copying variable magnification lens system
JPS5767909A (en) * 1980-10-15 1982-04-24 Canon Inc Variable magnification optical system
JPS61140912A (ja) * 1984-12-13 1986-06-28 Asahi Optical Co Ltd 複写変倍レンズ系
JPS6218514A (ja) * 1985-07-18 1987-01-27 Konishiroku Photo Ind Co Ltd 複写用ズ−ムレンズ系
JPH071338B2 (ja) * 1986-02-03 1995-01-11 旭光学工業株式会社 複写用変倍レンズ
JP2623620B2 (ja) * 1987-12-19 1997-06-25 ミノルタ株式会社 ズームレンズ系
DE4005300A1 (de) * 1990-02-20 1991-08-22 Leica Camera Gmbh Kameraobjektiv

Also Published As

Publication number Publication date
DE2328286A1 (de) 1973-12-13
GB1386175A (en) 1975-03-05
DD104858A5 (xx) 1974-03-20
IT986404B (it) 1975-01-30
JPS4952634A (xx) 1974-05-22
SE391589B (sv) 1977-02-21
FR2186664B1 (xx) 1977-09-23
FR2186664A1 (xx) 1974-01-11

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