GB1187913A - Improvements in or relating to Asymmetrical Light-Reflecting Screens. - Google Patents

Improvements in or relating to Asymmetrical Light-Reflecting Screens.

Info

Publication number
GB1187913A
GB1187913A GB02840/68A GB1284068A GB1187913A GB 1187913 A GB1187913 A GB 1187913A GB 02840/68 A GB02840/68 A GB 02840/68A GB 1284068 A GB1284068 A GB 1284068A GB 1187913 A GB1187913 A GB 1187913A
Authority
GB
United Kingdom
Prior art keywords
relating
asymmetrical light
reflecting screens
screens
reflecting
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
GB02840/68A
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.)
ELEKTRISKA EXAKTOR AB
Original Assignee
ELEKTRISKA EXAKTOR AB
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 ELEKTRISKA EXAKTOR AB filed Critical ELEKTRISKA EXAKTOR AB
Publication of GB1187913A publication Critical patent/GB1187913A/en
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)
GB02840/68A 1967-03-29 1968-03-15 Improvements in or relating to Asymmetrical Light-Reflecting Screens. Expired GB1187913A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB1187913A true GB1187913A (en) 1970-04-15

Family

ID=20263789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB02840/68A Expired GB1187913A (en) 1967-03-29 1968-03-15 Improvements in or relating to Asymmetrical Light-Reflecting Screens.

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
WO1992016790A1 (en) * 1991-03-14 1992-10-01 Edwin Gordon Howard Parabolic deflector

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
DE3729838A1 (de) * 1987-09-05 1989-03-23 Thorn Licht Gmbh Leuchte mit mindestens einer stabfoermigen leuchtstofflampe
US5008791A (en) * 1990-07-19 1991-04-16 Caferro Ronald N Low direct glare and wall wash parabolic lighting grid
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
WO1992016790A1 (en) * 1991-03-14 1992-10-01 Edwin Gordon Howard Parabolic deflector

Also Published As

Publication number Publication date
US3582642A (en) 1971-06-01
FR1557548A (de) 1969-02-14
DK123885B (da) 1972-08-14
DE1622846A1 (de) 1970-11-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees