GB1450590A - Correcting lens - Google Patents

Correcting lens

Info

Publication number
GB1450590A
GB1450590A GB4592673A GB4592673A GB1450590A GB 1450590 A GB1450590 A GB 1450590A GB 4592673 A GB4592673 A GB 4592673A GB 4592673 A GB4592673 A GB 4592673A GB 1450590 A GB1450590 A GB 1450590A
Authority
GB
United Kingdom
Prior art keywords
oct
elements
colour television
elongated
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
GB4592673A
Other languages
English (en)
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.)
RCA Corp
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
Publication of GB1450590A publication Critical patent/GB1450590A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
GB4592673A 1972-10-18 1973-10-02 Correcting lens Expired GB1450590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29864472A 1972-10-18 1972-10-18

Publications (1)

Publication Number Publication Date
GB1450590A true GB1450590A (en) 1976-09-22

Family

ID=23151408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4592673A Expired GB1450590A (en) 1972-10-18 1973-10-02 Correcting lens

Country Status (8)

Country Link
JP (1) JPS4975156A (it)
AU (1) AU474326B2 (it)
BE (1) BE806156A (it)
CA (1) CA1009484A (it)
FR (1) FR2203983B1 (it)
GB (1) GB1450590A (it)
IT (1) IT995544B (it)
NL (1) NL7314291A (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5341821Y2 (it) * 1975-04-30 1978-10-07

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922770A (it) * 1972-06-22 1974-02-28

Also Published As

Publication number Publication date
FR2203983A1 (it) 1974-05-17
IT995544B (it) 1975-11-20
NL7314291A (it) 1974-04-22
DE2352362A1 (de) 1974-05-09
CA1009484A (en) 1977-05-03
DE2352362B2 (de) 1976-11-18
BE806156A (fr) 1974-02-15
AU6073373A (en) 1975-03-27
JPS4975156A (it) 1974-07-19
FR2203983B1 (it) 1976-05-07
AU474326B2 (en) 1976-07-22

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees