DE3785308T2 - Lichtdurchlässiger Schirm und Verfahren zur Herstellung eines solchen Schirmes. - Google Patents

Lichtdurchlässiger Schirm und Verfahren zur Herstellung eines solchen Schirmes.

Info

Publication number
DE3785308T2
DE3785308T2 DE19873785308 DE3785308T DE3785308T2 DE 3785308 T2 DE3785308 T2 DE 3785308T2 DE 19873785308 DE19873785308 DE 19873785308 DE 3785308 T DE3785308 T DE 3785308T DE 3785308 T2 DE3785308 T2 DE 3785308T2
Authority
DE
Germany
Prior art keywords
screen
making
translucent
translucent screen
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 - Fee Related
Application number
DE19873785308
Other languages
English (en)
Other versions
DE3785308D1 (de
Inventor
Brian John Fitzpatrick
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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
Priority claimed from US06/938,669 external-priority patent/US4701019A/en
Priority claimed from US06/938,665 external-priority patent/US4725448A/en
Priority claimed from US06/938,664 external-priority patent/US4692359A/en
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE3785308D1 publication Critical patent/DE3785308D1/de
Publication of DE3785308T2 publication Critical patent/DE3785308T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • G03B21/625—Lenticular translucent screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00278—Lenticular sheets

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Overhead Projectors And Projection Screens (AREA)
DE19873785308 1986-12-05 1987-12-02 Lichtdurchlässiger Schirm und Verfahren zur Herstellung eines solchen Schirmes. Expired - Fee Related DE3785308T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US06/938,669 US4701019A (en) 1986-12-05 1986-12-05 Selective application of light-absorbing particles to a lenticular screen
US06/938,665 US4725448A (en) 1986-12-05 1986-12-05 Application of electrically-charged light-absorbing particles to a lenticular screen
US06/938,664 US4692359A (en) 1986-12-05 1986-12-05 Magnetic application of light-absorbing particles to a lenticular screen

Publications (2)

Publication Number Publication Date
DE3785308D1 DE3785308D1 (de) 1993-05-13
DE3785308T2 true DE3785308T2 (de) 1993-09-30

Family

ID=27420688

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873785308 Expired - Fee Related DE3785308T2 (de) 1986-12-05 1987-12-02 Lichtdurchlässiger Schirm und Verfahren zur Herstellung eines solchen Schirmes.

Country Status (3)

Country Link
EP (1) EP0270193B1 (de)
DE (1) DE3785308T2 (de)
DK (1) DK169394B1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475169A (en) * 1965-08-20 1969-10-28 Zenith Radio Corp Process of electrostatically screening color cathode-ray tubes
US4605283A (en) * 1983-12-30 1986-08-12 North American Philips Corporation Blackened optical transmission system
US4573764A (en) * 1983-12-30 1986-03-04 North American Philips Consumer Electronics Corp. Rear projection screen
NL8600944A (nl) * 1986-04-15 1987-11-02 Philips Nv Doorzicht projectiescherm en werkwijze voor de vervaardiging daarvan.

Also Published As

Publication number Publication date
EP0270193A3 (en) 1989-05-10
EP0270193A2 (de) 1988-06-08
DK632787A (da) 1988-06-06
DK632787D0 (da) 1987-12-02
DK169394B1 (da) 1994-10-17
DE3785308D1 (de) 1993-05-13
EP0270193B1 (de) 1993-04-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PHILIPS ELECTRONICS N.V., EINDHOVEN, NL

8339 Ceased/non-payment of the annual fee