CA1050314A - Systeme d'objectif de projection - Google Patents

Systeme d'objectif de projection

Info

Publication number
CA1050314A
CA1050314A CA226,075A CA226075A CA1050314A CA 1050314 A CA1050314 A CA 1050314A CA 226075 A CA226075 A CA 226075A CA 1050314 A CA1050314 A CA 1050314A
Authority
CA
Canada
Prior art keywords
lens
triplet
focal distance
lenses
picture
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
CA226,075A
Other languages
English (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.)
Filing date
Publication date
Application filed by Lindaco Ltd filed Critical Lindaco Ltd
Application granted granted Critical
Publication of CA1050314A publication Critical patent/CA1050314A/fr
Expired legal-status Critical Current

Links

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 Systeme d'objectif de projection Expired CA1050314A (fr)

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 (fr) 1979-03-13

Family

ID=20321270

Family Applications (1)

Application Number Title Priority Date Filing Date
CA226,075A Expired CA1050314A (fr) 1974-05-29 1975-05-01 Systeme d'objectif de projection

Country Status (21)

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

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

Also Published As

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

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