GB1461614A - Zoom lenses - Google Patents

Zoom lenses

Info

Publication number
GB1461614A
GB1461614A GB1492574A GB1492574A GB1461614A GB 1461614 A GB1461614 A GB 1461614A GB 1492574 A GB1492574 A GB 1492574A GB 1492574 A GB1492574 A GB 1492574A GB 1461614 A GB1461614 A GB 1461614A
Authority
GB
United Kingdom
Prior art keywords
lens group
april
lenses
zoom lenses
zoom
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
GB1492574A
Other languages
English (en)
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of GB1461614A publication Critical patent/GB1461614A/en
Expired 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
    • 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
    • G02B15/22—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 with movable lens means specially adapted for focusing at close distances
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
GB1492574A 1973-04-04 1974-04-04 Zoom lenses Expired GB1461614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4012473U JPS49141841U (enrdf_load_stackoverflow) 1973-04-04 1973-04-04

Publications (1)

Publication Number Publication Date
GB1461614A true GB1461614A (en) 1977-01-13

Family

ID=12572061

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1492574A Expired GB1461614A (en) 1973-04-04 1974-04-04 Zoom lenses

Country Status (4)

Country Link
JP (1) JPS49141841U (enrdf_load_stackoverflow)
DE (1) DE2416400A1 (enrdf_load_stackoverflow)
FR (1) FR2224768B1 (enrdf_load_stackoverflow)
GB (1) GB1461614A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57186872A (en) * 1981-05-13 1982-11-17 Hitachi Ltd Auto-focusing device of video camera

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4832387B1 (enrdf_load_stackoverflow) * 1969-07-26 1973-10-05

Also Published As

Publication number Publication date
DE2416400A1 (de) 1974-10-24
FR2224768A1 (enrdf_load_stackoverflow) 1974-10-31
JPS49141841U (enrdf_load_stackoverflow) 1974-12-06
FR2224768B1 (enrdf_load_stackoverflow) 1976-12-17

Similar Documents

Publication Publication Date Title
GB1477289A (en) Variable focal length lens system
GB1319639A (en) Optical magnification and reduction systems
GB1475696A (en) Zoom lens system also capable of ultra-closeup photography
GB1497384A (en) Variable focal length objective
JPS5229238A (en) Inside-view mirror objective optical system
GB1430311A (en) Telephoto lens systems
GB1451717A (en) Zoom lens systems
GB1527618A (en) Telephoto lens system
GB1447586A (en) Zoom lenses
GB2033606B (en) Zoom lenses having two lens groups
GB1303620A (enrdf_load_stackoverflow)
GB1455365A (en) Optical system for colour television camera
GB1461614A (en) Zoom lenses
GB1411533A (en) Microscope illumination system
GB1432072A (en) Zoom lens systems cyclohexene carboxyaldehyde derivative and its use in
JPS53142251A (en) Optical compensation type zoom lens
GB1469291A (en) Zoom lenses
GB1497551A (en) Zoom lens systems
GB1382923A (en) Colour resolving optical system
FR2373804A1 (fr) Objectif zoom pour appareils de prise de vues
GB1258189A (enrdf_load_stackoverflow)
JPS5387727A (en) Reflector type telephoto lens with flexible mirror
GB1060266A (en) Optical objective system
GB1008309A (en) Variable focal length lens system
JPS5714806A (en) Wavelength multiplex optical transmitting and receiving distributor

Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19940403