ES436963A1 - Perfeccionamientos introducidos en un sistema de lentes de proyeccion. - Google Patents

Perfeccionamientos introducidos en un sistema de lentes de proyeccion.

Info

Publication number
ES436963A1
ES436963A1 ES436963A ES436963A ES436963A1 ES 436963 A1 ES436963 A1 ES 436963A1 ES 436963 A ES436963 A ES 436963A ES 436963 A ES436963 A ES 436963A ES 436963 A1 ES436963 A1 ES 436963A1
Authority
ES
Spain
Prior art keywords
lenses
group
lens system
positive
projection lens
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
ES436963A
Other languages
English (en)
Spanish (es)
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
Publication of ES436963A1 publication Critical patent/ES436963A1/es
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)
ES436963A 1974-05-29 1975-04-25 Perfeccionamientos introducidos en un sistema de lentes de proyeccion. Expired ES436963A1 (es)

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
ES436963A1 true ES436963A1 (es) 1976-12-01

Family

ID=20321270

Family Applications (1)

Application Number Title Priority Date Filing Date
ES436963A Expired ES436963A1 (es) 1974-05-29 1975-04-25 Perfeccionamientos introducidos en un sistema de lentes de proyeccion.

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
CA1050314A (fr) 1979-03-13
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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