CH463815A - Projection lens with continuously variable focal length - Google Patents

Projection lens with continuously variable focal length

Info

Publication number
CH463815A
CH463815A CH777367A CH777367A CH463815A CH 463815 A CH463815 A CH 463815A CH 777367 A CH777367 A CH 777367A CH 777367 A CH777367 A CH 777367A CH 463815 A CH463815 A CH 463815A
Authority
CH
Switzerland
Prior art keywords
focal length
continuously variable
projection lens
variable focal
lens
Prior art date
Application number
CH777367A
Other languages
German (de)
Inventor
Smejkal Vilem
Pospisil Ladislav
Original Assignee
Meopta Narodni Podnik
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 Meopta Narodni Podnik filed Critical Meopta Narodni Podnik
Publication of CH463815A publication Critical patent/CH463815A/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • 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
    • G02B15/143—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 three groups only
    • G02B15/1435—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 three groups only the first group being negative
    • G02B15/143507—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 three groups only the first group being negative arranged -++

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Eyeglasses (AREA)
CH777367A 1966-06-14 1967-06-01 Projection lens with continuously variable focal length CH463815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS400366 1966-06-14

Publications (1)

Publication Number Publication Date
CH463815A true CH463815A (en) 1968-10-15

Family

ID=5381755

Family Applications (1)

Application Number Title Priority Date Filing Date
CH777367A CH463815A (en) 1966-06-14 1967-06-01 Projection lens with continuously variable focal length

Country Status (3)

Country Link
CH (1) CH463815A (en)
DE (1) DE1572737A1 (en)
GB (1) GB1168318A (en)

Also Published As

Publication number Publication date
DE1572737A1 (en) 1970-06-25
GB1168318A (en) 1969-10-22

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