NL7702191A - LENS SYSTEM WITH VARIABLE MAGNIFICATION. - Google Patents

LENS SYSTEM WITH VARIABLE MAGNIFICATION.

Info

Publication number
NL7702191A
NL7702191A NL7702191A NL7702191A NL7702191A NL 7702191 A NL7702191 A NL 7702191A NL 7702191 A NL7702191 A NL 7702191A NL 7702191 A NL7702191 A NL 7702191A NL 7702191 A NL7702191 A NL 7702191A
Authority
NL
Netherlands
Prior art keywords
lens system
variable magnification
magnification
variable
lens
Prior art date
Application number
NL7702191A
Other languages
Dutch (nl)
Original Assignee
Xerox 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
Priority claimed from US05/663,394 external-priority patent/US4056308A/en
Priority claimed from US05/663,397 external-priority patent/US4061419A/en
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of NL7702191A publication Critical patent/NL7702191A/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0896—Catadioptric systems with variable magnification or multiple imaging planes, including multispectral systems
    • 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
    • G02B15/142—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 two groups only
    • G02B15/1421—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 two groups only the first group being positive
    • 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
    • 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
    • G02B15/142—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 two groups only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/008—Systems specially adapted to form image relays or chained systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Lenses (AREA)
NL7702191A 1976-03-03 1977-03-01 LENS SYSTEM WITH VARIABLE MAGNIFICATION. NL7702191A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/663,394 US4056308A (en) 1976-03-03 1976-03-03 Variable focal length reflector lens system
US05/663,397 US4061419A (en) 1976-03-03 1976-03-03 Variable magnification lens system

Publications (1)

Publication Number Publication Date
NL7702191A true NL7702191A (en) 1977-09-06

Family

ID=27098728

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7702191A NL7702191A (en) 1976-03-03 1977-03-01 LENS SYSTEM WITH VARIABLE MAGNIFICATION.

Country Status (5)

Country Link
CH (1) CH611717A5 (en)
DE (1) DE2703914C2 (en)
FR (1) FR2343268A1 (en)
GB (1) GB1553054A (en)
NL (1) NL7702191A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH621414A5 (en) * 1977-11-15 1981-01-30 Gretag Ag

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537774A (en) * 1969-04-02 1970-11-03 Eastman Kodak Co Photographic objective of the gauss type having two airspaced negative doublets
BE755985A (en) * 1969-09-10 1971-03-10 Xerox Corp SYMMETRICAL DAGOR TYPE REPRODUCTIVE LENS SYSTEM, SEPARATE
US3687522A (en) * 1971-02-01 1972-08-29 Ilex Optical Co Inc Variable magnification lens system for finite conjugate distances
US3659922A (en) * 1971-02-25 1972-05-02 Xerox Corp Symmetrical half-lens optical system
JPS5110091B2 (en) * 1972-06-20 1976-04-01
US3865471A (en) * 1974-01-02 1975-02-11 Xerox Corp Lens system for photoelectrophoretic copying machine

Also Published As

Publication number Publication date
GB1553054A (en) 1979-09-19
FR2343268A1 (en) 1977-09-30
CH611717A5 (en) 1979-06-15
FR2343268B1 (en) 1980-09-12
DE2703914A1 (en) 1977-09-08
DE2703914C2 (en) 1986-06-26

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Legal Events

Date Code Title Description
BV The patent application has lapsed