JPS4923793B1 - - Google Patents

Info

Publication number
JPS4923793B1
JPS4923793B1 JP45042839A JP4283970A JPS4923793B1 JP S4923793 B1 JPS4923793 B1 JP S4923793B1 JP 45042839 A JP45042839 A JP 45042839A JP 4283970 A JP4283970 A JP 4283970A JP S4923793 B1 JPS4923793 B1 JP S4923793B1
Authority
JP
Japan
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.)
Pending
Application number
JP45042839A
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 filed Critical
Priority to JP45042839A priority Critical patent/JPS4923793B1/ja
Priority to US144158A priority patent/US3679292A/en
Priority to ES391707A priority patent/ES391707A1/es
Priority to DE2125352A priority patent/DE2125352C1/de
Publication of JPS4923793B1 publication Critical patent/JPS4923793B1/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/144—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only
    • G02B15/1441—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive
    • G02B15/144109—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive arranged +--+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP45042839A 1970-05-21 1970-05-21 Pending JPS4923793B1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP45042839A JPS4923793B1 (ja) 1970-05-21 1970-05-21
US144158A US3679292A (en) 1970-05-21 1971-05-17 Continuously-variable-magnification afocal lens system
ES391707A ES391707A1 (es) 1970-05-21 1971-05-19 Sistema para mejorar la evacuacion de los humos de las chi-meneas.
DE2125352A DE2125352C1 (de) 1970-05-21 1971-05-21 Afokales Linsensystem mit kontinuierlich veränderbarer Vergrößerung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45042839A JPS4923793B1 (ja) 1970-05-21 1970-05-21

Publications (1)

Publication Number Publication Date
JPS4923793B1 true JPS4923793B1 (ja) 1974-06-18

Family

ID=12647133

Family Applications (1)

Application Number Title Priority Date Filing Date
JP45042839A Pending JPS4923793B1 (ja) 1970-05-21 1970-05-21

Country Status (4)

Country Link
US (1) US3679292A (ja)
JP (1) JPS4923793B1 (ja)
DE (1) DE2125352C1 (ja)
ES (1) ES391707A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51134788U (ja) * 1975-04-21 1976-10-30
JPS57126082A (en) * 1981-01-29 1982-08-05 Riyuudenshiya Kk Plug socket

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2234728C3 (de) * 1972-07-14 1985-01-10 Kabushiki Kaisha Sankyo Seiki Seisakusho, Nagano Varioobjektiv mit Naheinstellbereich
JPS5652292B2 (ja) * 1973-08-04 1981-12-11
US3947084A (en) * 1975-02-28 1976-03-30 Hughes Aircraft Company Long-wave infrared afocal zoom telescope
JPS592884B2 (ja) * 1979-07-28 1984-01-21 旭光学工業株式会社 ズ−ムレンズのフオ−カス方式

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1311131A (fr) * 1961-03-31 1962-12-07 Perfectionnements aux objectifs de longueur focale variable
DE1277581B (de) * 1965-04-03 1968-09-12 Zeiss Carl Fa Photographisches Objektiv kontinuierlich veraenderbarer Brennweite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51134788U (ja) * 1975-04-21 1976-10-30
JPS57126082A (en) * 1981-01-29 1982-08-05 Riyuudenshiya Kk Plug socket

Also Published As

Publication number Publication date
DE2125352C1 (de) 1981-11-19
US3679292A (en) 1972-07-25
DE2125352A1 (de) 1971-12-02
ES391707A1 (es) 1974-06-01

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