BR7405353A - Lente de amplicao variavel - Google Patents

Lente de amplicao variavel

Info

Publication number: BR7405353A
Authority: BR; Brazil
Prior art keywords: amplication; lens; variable; variable amplication; amplication lens
Prior art date: 1973-09-04

Application number

BR5353/74A

Other languages

English (en)

Inventor

G Mccrobie

R Donnel

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.)

1973-09-04

Filing date

1974-06-28

Publication date

1976-02-24

1974-06-28 Application filed by Xerox Corp filed Critical Xerox Corp

1976-02-24 Publication of BR7405353A publication Critical patent/BR7405353A/pt

Links

Classifications

- 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
- 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
- G02B15/146—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 more than five groups
- G02B15/1461—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 more than five groups the first group being positive

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Lenses (AREA)
Variable Magnification In Projection-Type Copying Machines (AREA)
Exposure Or Original Feeding In Electrophotography (AREA)

BR5353/74A 1973-09-04 1974-06-28 Lente de amplicao variavel BR7405353A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US393844A US3865470A (en)	1973-09-04	1973-09-04	Variable magnification lens system

Publications (1)

Publication Number	Publication Date
BR7405353A true BR7405353A (pt)	1976-02-24

Family

ID=23556470

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR5353/74A BR7405353A (pt)	1973-09-04	1974-06-28	Lente de amplicao variavel

Country Status (13)

Country	Link
US (1)	US3865470A (pt)
JP (1)	JPS5056242A (pt)
BE (1)	BE819497A (pt)
BR (1)	BR7405353A (pt)
CA (1)	CA1018807A (pt)
DE (1)	DE2441294C2 (pt)
ES (1)	ES429431A1 (pt)
FR (1)	FR2242694B1 (pt)
GB (1)	GB1469585A (pt)
IT (1)	IT1020382B (pt)
NL (1)	NL7410422A (pt)
SE (1)	SE392528B (pt)
SU (1)	SU592375A3 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3912374A (en) *	1974-10-17	1975-10-14	Xerox Corp	Six component zoom lens
US4149774A (en) *	1977-11-14	1979-04-17	Fuji Photo Optical Co., Ltd.	Zoom lens system
JPS5590930A (en) *	1978-12-29	1980-07-10	Nippon Kogaku Kk <Nikon>	4-group constitution lens
JPS5768810A (en) *	1980-10-18	1982-04-27	Asahi Optical Co Ltd	Variable nagnification lens system for copying
US4753522A (en) *	1985-06-03	1988-06-28	Ricoh Company, Ltd.	Plastic lens assembly for use in copying machines
JPS6291913A (ja) *	1985-10-18	1987-04-27	興和株式会社	レ−ザ−スポツト光学系
US4812021A (en) *	1987-10-07	1989-03-14	Xerox Corporation	Wide angle zoom lens
JP2562636B2 (ja) *	1987-12-25	1996-12-11	富士写真光機株式会社	複写用変倍レンズ系

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5713849B1 (pt) *	1969-09-08	1982-03-19
US3687522A (en) *	1971-02-01	1972-08-29	Ilex Optical Co Inc	Variable magnification lens system for finite conjugate distances

1973
- 1973-09-04 US US393844A patent/US3865470A/en not_active Expired - Lifetime
1974
- 1974-06-17 SU SU742032686A patent/SU592375A3/ru active
- 1974-06-28 BR BR5353/74A patent/BR7405353A/pt unknown
- 1974-08-02 NL NL7410422A patent/NL7410422A/xx not_active Application Discontinuation
- 1974-08-06 SE SE7410077A patent/SE392528B/xx unknown
- 1974-08-21 ES ES429431A patent/ES429431A1/es not_active Expired
- 1974-08-28 JP JP49098838A patent/JPS5056242A/ja active Pending
- 1974-08-29 GB GB3787474A patent/GB1469585A/en not_active Expired
- 1974-08-29 DE DE2441294A patent/DE2441294C2/de not_active Expired
- 1974-08-30 CA CA208,265A patent/CA1018807A/en not_active Expired
- 1974-09-02 FR FR7429827A patent/FR2242694B1/fr not_active Expired
- 1974-09-02 IT IT26845/74A patent/IT1020382B/it active
- 1974-09-03 BE BE148176A patent/BE819497A/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
DE2441294C2 (de)	1982-04-01
ES429431A1 (es)	1977-01-16
SE392528B (sv)	1977-03-28
SE7410077L (pt)	1975-03-05
FR2242694A1 (pt)	1975-03-28
US3865470A (en)	1975-02-11
CA1018807A (en)	1977-10-11
FR2242694B1 (pt)	1976-10-22
GB1469585A (en)	1977-04-06
DE2441294A1 (de)	1975-03-13
SU592375A3 (ru)	1978-02-05
AU7280274A (en)	1976-03-04
JPS5056242A (pt)	1975-05-16
BE819497A (fr)	1974-12-31
IT1020382B (it)	1977-12-20
NL7410422A (pt)	1974-10-25

Publication	Publication Date	Title
BE816937A (nl)	1974-10-16	Maaidorser
IT1018741B (it)	1977-10-20	Macchina fotografica
SE388554B (sv)	1976-10-11	Svarv
BR7304415D0 (pt)	1974-08-15	Conjunto de farois
AR198436A1 (es)	1974-06-21	Cosechadora de surcos
IT1008986B (it)	1976-11-30	Filtrazione
BE810182A (fr)	1974-07-25	Camera
IT1003592B (it)	1976-06-10	Microtelefono
BR7410689D0 (pt)	1975-09-02	Dispositivo de selecao de lentes
BR7406532D0 (pt)	1975-05-27	Copolimero de arrumacao almatoria
ATA885972A (de)	1976-02-15	Pankratisches objektiv
BR7405353A (pt)	1976-02-24	Lente de amplicao variavel
FI53428C (fi)	1978-05-10	Foerpackning foer flytande produkter
BE814672A (fr)	1974-09-02	Revolver
BE820110A (fr)	1975-03-19	Isoalloxazines
AT323440B (de)	1975-07-10	Pankratisches objektiv
AT329898B (de)	1976-06-10	Pankratisches objektiv
IT1046281B (it)	1980-06-30	Apparecchio fotografico
AT325325B (de)	1975-10-10	Pankratisches kamera-objektiv
IT1022489B (it)	1978-03-20	Ravvivanti ottici
IT1046518B (it)	1980-07-31	Apparecchio fotografico
AT345386B (de)	1978-09-11	Scheinwerfer
AT338012B (de)	1977-07-25	Funfgliedriges modifiziertes gaussobjektiv
SE388479B (sv)	1976-10-04	Optiskt riktmedel
SE399767B (sv)	1978-02-27	Mekaniskt tendror