CA1050314A - Projection lens system - Google Patents

Projection lens system

Info

Publication number: CA1050314A
Authority: CA; Canada
Prior art keywords: lens; triplet; focal distance; lenses; picture
Prior art date: 1974-05-29
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

CA226,075A

Other languages

English (en)

French (fr)

Other versions

CA226075S (en

Inventor

Georg Vogl

Bo Moller

Jan-Erik Astero

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.)

Lindaco Ltd

Original Assignee

Lindaco 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.)

1974-05-29

Filing date

1975-05-01

Publication date

1979-03-13

1975-05-01 Application filed by Lindaco Ltd filed Critical Lindaco Ltd

1979-03-13 Application granted granted Critical

1979-03-13 Publication of CA1050314A publication Critical patent/CA1050314A/en

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only
- G02B9/14—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only arranged + - +
- G02B9/16—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only arranged + - + all the components being simple
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Lenses (AREA)
Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Medicines Containing Plant Substances (AREA)
External Artificial Organs (AREA)

CA226,075A 1974-05-29 1975-05-01 Projection lens system Expired CA1050314A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE7407134A SE382262B (sv)	1974-05-29	1974-05-29	Projektionsoptik.

Publications (1)

Publication Number	Publication Date
CA1050314A true CA1050314A (en)	1979-03-13

Family

ID=20321270

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA226,075A Expired CA1050314A (en)	1974-05-29	1975-05-01	Projection lens system

Country Status (21)

Country	Link
JP (1)	JPS513228A (es)
AT (1)	AT351828B (es)
BE (1)	BE829494A (es)
BR (1)	BR7503348A (es)
CA (1)	CA1050314A (es)
CH (1)	CH585910A5 (es)
CS (1)	CS192543B2 (es)
DD (1)	DD120942A5 (es)
DE (1)	DE2519991A1 (es)
DK (1)	DK238075A (es)
ES (1)	ES436963A1 (es)
FI (1)	FI751515A (es)
FR (1)	FR2273290B1 (es)
GB (1)	GB1474847A (es)
HU (1)	HU175781B (es)
IT (1)	IT1037780B (es)
NL (1)	NL7506296A (es)
NO (1)	NO139872C (es)
PL (1)	PL104910B1 (es)
SE (1)	SE382262B (es)
SU (1)	SU625640A3 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4311366A (en) *	1978-03-01	1982-01-19	J. H. Dallmeyer Limited	Image focusing system
US4380374A (en) *	1981-04-16	1983-04-19	Minnesota Mining & Manufacturing Company	Variable focal length projection lens for use on overhead projectors
JP2691566B2 (ja) *	1988-06-14	1997-12-17	旭光学工業株式会社	拡大投影レンズ
JP2954217B2 (ja) *	1987-12-09	1999-09-27	株式会社日立製作所	投写用レンズ

1974
- 1974-05-29 SE SE7407134A patent/SE382262B/xx not_active IP Right Cessation
1975
- 1975-04-24 NO NO751480A patent/NO139872C/no unknown
- 1975-04-25 GB GB1726775A patent/GB1474847A/en not_active Expired
- 1975-04-25 ES ES436963A patent/ES436963A1/es not_active Expired
- 1975-04-30 IT IT22916/75A patent/IT1037780B/it active
- 1975-05-01 CA CA226,075A patent/CA1050314A/en not_active Expired
- 1975-05-05 DE DE19752519991 patent/DE2519991A1/de not_active Withdrawn
- 1975-05-15 FR FR7515205A patent/FR2273290B1/fr not_active Expired
- 1975-05-26 BE BE156716A patent/BE829494A/xx unknown
- 1975-05-26 AT AT398475A patent/AT351828B/de not_active IP Right Cessation
- 1975-05-26 FI FI751515A patent/FI751515A/fi not_active Application Discontinuation
- 1975-05-26 SU SU752136683A patent/SU625640A3/ru active
- 1975-05-27 CH CH679275A patent/CH585910A5/xx not_active IP Right Cessation
- 1975-05-27 DD DD186283A patent/DD120942A5/xx unknown
- 1975-05-27 BR BR4278/75A patent/BR7503348A/pt unknown
- 1975-05-27 HU HU75LI276A patent/HU175781B/hu unknown
- 1975-05-28 NL NL7506296A patent/NL7506296A/xx not_active Application Discontinuation
- 1975-05-28 JP JP50063946A patent/JPS513228A/ja active Pending
- 1975-05-28 PL PL1975180786A patent/PL104910B1/pl unknown
- 1975-05-28 CS CS753750A patent/CS192543B2/cs unknown
- 1975-05-28 DK DK238075A patent/DK238075A/da unknown

Also Published As

Publication number	Publication date
ES436963A1 (es)	1976-12-01
SE382262B (sv)	1976-01-19
BE829494A (fr)	1975-09-15
CS192543B2 (en)	1979-08-31
BR7503348A (pt)	1976-04-27
AU8129275A (en)	1976-11-25
FR2273290B1 (es)	1980-07-11
CH585910A5 (es)	1977-03-15
DD120942A5 (es)	1976-07-05
IT1037780B (it)	1979-11-20
GB1474847A (en)	1977-05-25
AT351828B (de)	1979-08-10
NO139872B (no)	1979-02-12
NO751480L (es)	1975-12-02
PL104910B1 (pl)	1979-09-29
ATA398475A (de)	1979-01-15
NL7506296A (nl)	1975-12-02
NO139872C (no)	1979-05-23
DE2519991A1 (de)	1975-12-18
HU175781B (hu)	1980-10-28
FR2273290A1 (es)	1975-12-26
DK238075A (da)	1975-11-30
SU625640A3 (ru)	1978-09-25
SE7407134L (sv)	1975-12-01
JPS513228A (es)	1976-01-12
FI751515A (es)	1975-11-30

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