FR2273290A1 - - Google Patents

Info

Publication number
FR2273290A1
FR2273290A1 FR7515205A FR7515205A FR2273290A1 FR 2273290 A1 FR2273290 A1 FR 2273290A1 FR 7515205 A FR7515205 A FR 7515205A FR 7515205 A FR7515205 A FR 7515205A FR 2273290 A1 FR2273290 A1 FR 2273290A1
Authority
FR
France
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.)
Granted
Application number
FR7515205A
Other versions
FR2273290B1 (fr
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 FR2273290A1 publication Critical patent/FR2273290A1/fr
Application granted granted Critical
Publication of FR2273290B1 publication Critical patent/FR2273290B1/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
FR7515205A 1974-05-29 1975-05-15 Expired FR2273290B1 (fr)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2273290A1 true FR2273290A1 (fr) 1975-12-26
FR2273290B1 FR2273290B1 (fr) 1980-07-11

Family

ID=20321270

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7515205A Expired FR2273290B1 (fr) 1974-05-29 1975-05-15

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0063425A1 (fr) * 1981-04-16 1982-10-27 Minnesota Mining And Manufacturing Company Lentille de projection de longueur focale variable utilisée pour des rétro-projecteurs

Families Citing this family (3)

* 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
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0063425A1 (fr) * 1981-04-16 1982-10-27 Minnesota Mining And Manufacturing Company Lentille de projection de longueur focale variable utilisée pour des rétro-projecteurs

Also Published As

Publication number Publication date
SE382262B (sv) 1976-01-19
FR2273290B1 (fr) 1980-07-11
GB1474847A (en) 1977-05-25
PL104910B1 (pl) 1979-09-29
DE2519991A1 (de) 1975-12-18
JPS513228A (fr) 1976-01-12
BR7503348A (pt) 1976-04-27
NO751480L (fr) 1975-12-02
DD120942A5 (fr) 1976-07-05
AU8129275A (en) 1976-11-25
AT351828B (de) 1979-08-10
CA1050314A (fr) 1979-03-13
HU175781B (hu) 1980-10-28
NL7506296A (nl) 1975-12-02
IT1037780B (it) 1979-11-20
DK238075A (da) 1975-11-30
CH585910A5 (fr) 1977-03-15
NO139872B (no) 1979-02-12
CS192543B2 (en) 1979-08-31
ATA398475A (de) 1979-01-15
FI751515A (fr) 1975-11-30
NO139872C (no) 1979-05-23
BE829494A (fr) 1975-09-15
SE7407134L (sv) 1975-12-01
ES436963A1 (es) 1976-12-01
SU625640A3 (ru) 1978-09-25

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Legal Events

Date Code Title Description
ST Notification of lapse