GB9415225D0 - Zoom lens system - Google Patents

Zoom lens system

Info

Publication number: GB9415225D0
Authority: GB; United Kingdom
Prior art keywords: zoom lens; lens system; zoom; lens
Prior art date: 1991-09-24
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

GB9415225A

Other versions

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.)

Pentax Corp

Original Assignee

Asahi Kogaku Kogyo Co Ltd

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.)

1991-09-24

Filing date

1994-07-28

Publication date

1994-09-21

1991-09-24 Priority claimed from JP3315607A external-priority patent/JPH0588085A/en

1994-07-28 Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd

1994-09-21 Publication of GB9415225D0 publication Critical patent/GB9415225D0/en

1994-12-14 Publication of GB2278932A publication Critical patent/GB2278932A/en

Status Withdrawn legal-status Critical Current

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
- G02B15/143—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
- G02B15/1431—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 positive
- G02B15/143103—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 positive arranged ++-

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Lenses (AREA)

GB9415225A 1991-09-24 1994-07-28 Zoom lens system having an aspheric lens Withdrawn GB2278932A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP3315607A JPH0588085A (en)	1991-09-24	1991-09-24	Zoom lens
GB9220224A GB2260201B (en)	1991-09-24	1992-09-24	Three group zoom lens system with aspheric surfaces

Publications (2)

Publication Number	Publication Date
GB9415225D0 true GB9415225D0 (en)	1994-09-21
GB2278932A GB2278932A (en)	1994-12-14

Family

ID=26301681

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
GB9415223A Expired - Fee Related GB2278930B (en)	1991-09-24	1992-09-24	Zoom lens system having six lens components
GB9415225A Withdrawn GB2278932A (en)	1991-09-24	1994-07-28	Zoom lens system having an aspheric lens
GB9415224A Withdrawn GB2278931A (en)	1991-09-24	1994-07-28	Zoom lens system having six lens components

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
GB9415223A Expired - Fee Related GB2278930B (en)	1991-09-24	1992-09-24	Zoom lens system having six lens components

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
GB9415224A Withdrawn GB2278931A (en)	1991-09-24	1994-07-28	Zoom lens system having six lens components

Country Status (1)

Country	Link
GB (3)	GB2278930B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP3149227B2 (en) *	1991-09-13	2001-03-26	旭光学工業株式会社	Zoom lens

1992
- 1992-09-24 GB GB9415223A patent/GB2278930B/en not_active Expired - Fee Related
1994
- 1994-07-28 GB GB9415225A patent/GB2278932A/en not_active Withdrawn
- 1994-07-28 GB GB9415224A patent/GB2278931A/en not_active Withdrawn

Also Published As

Publication number	Publication date
GB2278931A (en)	1994-12-14
GB2278930A (en)	1994-12-14
GB9415224D0 (en)	1994-09-21
GB2278932A (en)	1994-12-14
GB2278930B (en)	1996-04-24
GB9415223D0 (en)	1994-09-21

Publication	Publication Date	Title
GB9222039D0 (en)	1992-12-02	Zoom lens system
GB2258320B (en)	1995-05-10	Zoom lens system
GB2263345B (en)	1995-06-07	Zoom lens system
GB2258738B (en)	1994-08-03	Zoom lens assembly
GB2251955B (en)	1994-06-08	Zoom lens system
GB2253281B (en)	1994-05-25	Zoom lens
GB9220224D0 (en)	1992-11-04	Zoom lens system
GB2258056B (en)	1994-12-14	Zoom lens system
GB9202571D0 (en)	1992-03-25	Wide-angle lens system
GB2244819B (en)	1994-08-03	Zoom lens system
GB9222075D0 (en)	1992-12-02	Zoom lens system
GB9219246D0 (en)	1992-10-28	Zoom lens system
EP0601337A3 (en)	1995-02-15	Zoom lens system.
GB9227033D0 (en)	1993-02-24	Zoom lens system
GB9103846D0 (en)	1991-04-10	Lens system
GB9207109D0 (en)	1992-05-13	Zoom lens system
GB9221409D0 (en)	1992-11-25	Zoom lens system
IL89301A0 (en)	1991-08-16	Zoom system zoom lens system
GB9321381D0 (en)	1993-12-08	Zoom lens system
EP0493261A3 (en)	1992-11-04	Zoom lens
GB9121461D0 (en)	1991-11-27	Zoom lens system
GB2276013B (en)	1996-06-05	Zoom lens
GB2281412B (en)	1995-05-10	Two group zoom lens system
GB9415223D0 (en)	1994-09-21	Zoom lens system
GB9421233D0 (en)	1994-12-07	Zoom lens system

Legal Events

Date	Code	Title	Description
1995-07-12	WAP	Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)