FR1557548A - - Google Patents

Info

Publication number
FR1557548A
FR1557548A FR1557548DA FR1557548A FR 1557548 A FR1557548 A FR 1557548A FR 1557548D A FR1557548D A FR 1557548DA FR 1557548 A FR1557548 A FR 1557548A
Authority
FR
France
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
Other languages
French (fr)
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 filed Critical
Application granted granted Critical
Publication of FR1557548A publication Critical patent/FR1557548A/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
FR1557548D 1967-03-29 1968-03-28 Expired FR1557548A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE424667 1967-03-29

Publications (1)

Publication Number Publication Date
FR1557548A true FR1557548A (de) 1969-02-14

Family

ID=20263789

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1557548D Expired FR1557548A (de) 1967-03-29 1968-03-28

Country Status (5)

Country Link
US (1) US3582642A (de)
DE (1) DE1622846A1 (de)
DK (1) DK123885B (de)
FR (1) FR1557548A (de)
GB (1) GB1187913A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306603A3 (en) * 1987-09-05 1989-11-23 Thorn Licht Gmbh Lighting fixture with at least one tubular fluorescent lamp

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3412162C1 (de) * 1984-03-31 1985-08-29 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Langgestreckte Leuchte
DK160057C (da) * 1987-05-18 1991-06-10 Lysteknisk Lab Danmarks Teknis Belysningsarmatur
US5008791A (en) * 1990-07-19 1991-04-16 Caferro Ronald N Low direct glare and wall wash parabolic lighting grid
WO1992016790A1 (en) * 1991-03-14 1992-10-01 Edwin Gordon Howard Parabolic deflector
US8297819B2 (en) * 2009-03-20 2012-10-30 Sylvan R. Shemitz Designs Incorporated Light pipe structure and luminaire with light pipe structure
CN102537704B (zh) * 2010-12-30 2014-07-23 海洋王照明科技股份有限公司 防眩光灯具

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2837632A (en) * 1955-01-24 1958-06-03 Willis L Lipscomb Curved, cellular light control panel
US2971083A (en) * 1958-11-14 1961-02-07 Gen Electric Low brightness louver
US3169710A (en) * 1962-03-16 1965-02-16 Willis L Lipscomb Lighting fixture
US3390263A (en) * 1966-08-22 1968-06-25 Willis L. Lipscomb Columnar cellular louver light control unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306603A3 (en) * 1987-09-05 1989-11-23 Thorn Licht Gmbh Lighting fixture with at least one tubular fluorescent lamp

Also Published As

Publication number Publication date
GB1187913A (en) 1970-04-15
US3582642A (en) 1971-06-01
DE1622846A1 (de) 1970-11-26
DK123885B (da) 1972-08-14

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Legal Events

Date Code Title Description
ST Notification of lapse