IT995546B - Lente di correzione - Google Patents

Lente di correzione

Info

Publication number
IT995546B
IT995546B IT29615/73A IT2961573A IT995546B IT 995546 B IT995546 B IT 995546B IT 29615/73 A IT29615/73 A IT 29615/73A IT 2961573 A IT2961573 A IT 2961573A IT 995546 B IT995546 B IT 995546B
Authority
IT
Italy
Prior art keywords
correction lens
correction
lens
Prior art date
Application number
IT29615/73A
Other languages
English (en)
Italian (it)
Original Assignee
Rca Corp
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 Rca Corp filed Critical Rca Corp
Application granted granted Critical
Publication of IT995546B publication Critical patent/IT995546B/it

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
    • H01J9/2272—Devices for carrying out the processes, e.g. light houses
    • H01J9/2273—Auxiliary lenses and filters
    • 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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
IT29615/73A 1972-10-18 1973-10-01 Lente di correzione IT995546B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00298642A US3811754A (en) 1972-10-18 1972-10-18 Correcting lens

Publications (1)

Publication Number Publication Date
IT995546B true IT995546B (it) 1975-11-20

Family

ID=23151399

Family Applications (1)

Application Number Title Priority Date Filing Date
IT29615/73A IT995546B (it) 1972-10-18 1973-10-01 Lente di correzione

Country Status (9)

Country Link
US (1) US3811754A (sh)
JP (1) JPS4975155A (sh)
AU (1) AU472436B2 (sh)
BE (1) BE806154A (sh)
CA (1) CA998270A (sh)
FR (1) FR2203984B1 (sh)
GB (1) GB1450589A (sh)
IT (1) IT995546B (sh)
NL (1) NL7314290A (sh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979255A (sh) * 1972-12-04 1974-07-31
DE3305979A1 (de) * 1983-02-21 1984-08-23 Richard 8901 Neusäß Wallner Lichtverdichter
US4830481A (en) * 1988-08-12 1989-05-16 Minnesota Mining And Manufacturing Company Multifocal diffractive lens
CN102549333B (zh) * 2009-09-18 2014-12-10 皇家飞利浦电子股份有限公司 灯具和光学元件

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1952237A (en) * 1930-11-24 1934-03-27 Ylla-Conte Jose Lens for the concentration of solar heat
GB791312A (en) * 1953-03-26 1958-02-26 Theodore Hendrik Nakken Photographic objectives
US2999126A (en) * 1958-05-29 1961-09-05 Harries Television Res Ltd Facetted correction lens for minimizing keystoning of off-axis projectors
US3495511A (en) * 1967-10-05 1970-02-17 Nat Video Corp Heterogeneous lens for forming phosphor patterns on color kinescope
US3628850A (en) * 1970-02-24 1971-12-21 Hitachi Ltd Correcting lens
JPS4918572A (sh) * 1972-06-14 1974-02-19

Also Published As

Publication number Publication date
JPS4975155A (sh) 1974-07-19
FR2203984B1 (sh) 1976-05-07
US3811754A (en) 1974-05-21
NL7314290A (sh) 1974-04-22
AU472436B2 (en) 1976-05-27
GB1450589A (en) 1976-09-22
BE806154A (fr) 1974-02-15
DE2352363B2 (de) 1976-04-15
AU6081073A (en) 1975-03-27
DE2352363A1 (de) 1974-05-09
CA998270A (en) 1976-10-12
FR2203984A1 (sh) 1974-05-17

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