CA998269A - Discontinuity orientation in a multielement lens - Google Patents

Discontinuity orientation in a multielement lens

Info

Publication number
CA998269A
CA998269A CA183,368A CA183368A CA998269A CA 998269 A CA998269 A CA 998269A CA 183368 A CA183368 A CA 183368A CA 998269 A CA998269 A CA 998269A
Authority
CA
Canada
Prior art keywords
discontinuity
orientation
multielement lens
multielement
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
CA183,368A
Other versions
CA183368S (en
Inventor
Frans Van Hekken
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
Application granted granted Critical
Publication of CA998269A publication Critical patent/CA998269A/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)
  • Overhead Projectors And Projection Screens (AREA)
CA183,368A 1972-10-18 1973-10-15 Discontinuity orientation in a multielement lens Expired CA998269A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CA998269A true CA998269A (en) 1976-10-12

Family

ID=23151404

Family Applications (1)

Application Number Title Priority Date Filing Date
CA183,368A Expired CA998269A (en) 1972-10-18 1973-10-15 Discontinuity orientation in a multielement lens

Country Status (7)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1115189B (en) * 1978-05-30 1986-02-03 Rca Corp FRESNEL LENS
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
DE112004001761B4 (en) 2003-09-22 2016-01-07 Bosch Rexroth Corp. Pressure vessel arrangement for a pressure fluid system

Also Published As

Publication number Publication date
AU6080973A (en) 1975-03-27
GB1450722A (en) 1976-09-29
FR2203982B1 (en) 1977-05-27
FR2203982A1 (en) 1974-05-17
IT993500B (en) 1975-09-30
JPS4975154A (en) 1974-07-19
DE2352365A1 (en) 1974-05-09
DE2352365B2 (en) 1977-02-03
NL7314288A (en) 1974-04-22
BE806155A (en) 1974-02-15

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