GB1168318A - Projection Lens with Continuous Variable Focal Length - Google Patents

Projection Lens with Continuous Variable Focal Length

Info

Publication number
GB1168318A
GB1168318A GB27362/67A GB2736267A GB1168318A GB 1168318 A GB1168318 A GB 1168318A GB 27362/67 A GB27362/67 A GB 27362/67A GB 2736267 A GB2736267 A GB 2736267A GB 1168318 A GB1168318 A GB 1168318A
Authority
GB
United Kingdom
Prior art keywords
focal length
projection lens
continuous variable
variable focal
positive
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
GB27362/67A
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.)
Meopta np
Original Assignee
Meopta np
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 np filed Critical Meopta np
Publication of GB1168318A publication Critical patent/GB1168318A/en
Expired legal-status Critical Current

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)

Abstract

1,168,318. Zoom projection objectives. MEOPTA NARODNI PODNIK. June 14, 1967 [June 14, 1966], No.27362/67. Heading G2J. A zoom lens having a fixed negative component I of focal length f I , a movable positive component II, and a fixed positive component m of focal length f III consisting of a positive element 1 of focal length f 1 , negative element 2 of focal length f 2 , positive element 3 of focal length f 3 and a doublet 4 of focal length f 4 , front and rear surfaces of radii r 13 , r 15 , respectively and thickness d 13 + d 14 , is characterized by:- Optical data are given for three examples.
GB27362/67A 1966-06-14 1967-06-14 Projection Lens with Continuous Variable Focal Length Expired GB1168318A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB1168318A true GB1168318A (en) 1969-10-22

Family

ID=5381755

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27362/67A Expired GB1168318A (en) 1966-06-14 1967-06-14 Projection Lens with Continuous 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
CH463815A (en) 1968-10-15
DE1572737A1 (en) 1970-06-25

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees