IT993500B - Lente di correzione a piu elementi separati da discontinuita - Google Patents

Lente di correzione a piu elementi separati da discontinuita

Info

Publication number
IT993500B
IT993500B IT2954673A IT2954673A IT993500B IT 993500 B IT993500 B IT 993500B IT 2954673 A IT2954673 A IT 2954673A IT 2954673 A IT2954673 A IT 2954673A IT 993500 B IT993500 B IT 993500B
Authority
IT
Italy
Prior art keywords
discontinuity
correction lens
multiple elements
elements separated
separated
Prior art date
Application number
IT2954673A
Other languages
English (en)
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 IT993500B publication Critical patent/IT993500B/it

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)
  • Overhead Projectors And Projection Screens (AREA)
IT2954673A 1972-10-18 1973-09-28 Lente di correzione a piu elementi separati da discontinuita IT993500B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29864372A 1972-10-18 1972-10-18

Publications (1)

Publication Number Publication Date
IT993500B true IT993500B (it) 1975-09-30

Family

ID=23151404

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2954673A IT993500B (it) 1972-10-18 1973-09-28 Lente di correzione a piu elementi separati da discontinuita

Country Status (7)

Country Link
JP (1) JPS4975154A (it)
BE (1) BE806155A (it)
CA (1) CA998269A (it)
FR (1) FR2203982B1 (it)
GB (1) GB1450722A (it)
IT (1) IT993500B (it)
NL (1) NL7314288A (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1115189B (it) * 1978-05-30 1986-02-03 Rca Corp Lente fresnel
TW460900B (en) * 1999-04-16 2001-10-21 Koninkl Philips Electronics Nv Method of producing a screen for a display device, screen for a display device produced by means of said method and display device provided with said screen
GB2420594B (en) 2003-09-22 2008-01-09 Dana Corp Pressure vessel assembly for integrated pressurized fluid system

Also Published As

Publication number Publication date
JPS4975154A (it) 1974-07-19
BE806155A (fr) 1974-02-15
DE2352365B2 (de) 1977-02-03
CA998269A (en) 1976-10-12
FR2203982B1 (it) 1977-05-27
NL7314288A (it) 1974-04-22
DE2352365A1 (de) 1974-05-09
AU6080973A (en) 1975-03-27
FR2203982A1 (it) 1974-05-17
GB1450722A (en) 1976-09-29

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