IT1037780B - Sistema di lenti da proiezione - Google Patents

Sistema di lenti da proiezione

Info

Publication number
IT1037780B
IT1037780B IT22916/75A IT2291675A IT1037780B IT 1037780 B IT1037780 B IT 1037780B IT 22916/75 A IT22916/75 A IT 22916/75A IT 2291675 A IT2291675 A IT 2291675A IT 1037780 B IT1037780 B IT 1037780B
Authority
IT
Italy
Prior art keywords
lens system
projection lens
projection
lens
Prior art date
Application number
IT22916/75A
Other languages
English (en)
Italian (it)
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 IT1037780B publication Critical patent/IT1037780B/it

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)
IT22916/75A 1974-05-29 1975-04-30 Sistema di lenti da proiezione IT1037780B (it)

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
IT1037780B true IT1037780B (it) 1979-11-20

Family

ID=20321270

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22916/75A IT1037780B (it) 1974-05-29 1975-04-30 Sistema di lenti da proiezione

Country Status (21)

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

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
SE7407134L (sv) 1975-12-01
GB1474847A (en) 1977-05-25
DD120942A5 (da) 1976-07-05
NL7506296A (nl) 1975-12-02
BR7503348A (pt) 1976-04-27
BE829494A (fr) 1975-09-15
FR2273290A1 (da) 1975-12-26
FI751515A (da) 1975-11-30
CH585910A5 (da) 1977-03-15
NO751480L (da) 1975-12-02
CA1050314A (en) 1979-03-13
AT351828B (de) 1979-08-10
SU625640A3 (ru) 1978-09-25
ES436963A1 (es) 1976-12-01
SE382262B (sv) 1976-01-19
DK238075A (da) 1975-11-30
NO139872C (no) 1979-05-23
FR2273290B1 (da) 1980-07-11
CS192543B2 (en) 1979-08-31
NO139872B (no) 1979-02-12
ATA398475A (de) 1979-01-15
DE2519991A1 (de) 1975-12-18
JPS513228A (da) 1976-01-12
PL104910B1 (pl) 1979-09-29
AU8129275A (en) 1976-11-25
HU175781B (hu) 1980-10-28

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