GB1554995A - Light diffusion louvre for a luminaire - Google Patents

Light diffusion louvre for a luminaire

Info

Publication number
GB1554995A
GB1554995A GB7678/78A GB767878A GB1554995A GB 1554995 A GB1554995 A GB 1554995A GB 7678/78 A GB7678/78 A GB 7678/78A GB 767878 A GB767878 A GB 767878A GB 1554995 A GB1554995 A GB 1554995A
Authority
GB
United Kingdom
Prior art keywords
louvre
luminaire
light diffusion
diffusion
light
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
GB7678/78A
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
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB1554995A publication Critical patent/GB1554995A/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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Polarising Elements (AREA)
GB7678/78A 1977-03-02 1978-02-27 Light diffusion louvre for a luminaire Expired GB1554995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7702208A NL7702208A (en) 1977-03-02 1977-03-02 LUMINAIRE FOR ELONGATED LAMPS.

Publications (1)

Publication Number Publication Date
GB1554995A true GB1554995A (en) 1979-10-31

Family

ID=19828082

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7678/78A Expired GB1554995A (en) 1977-03-02 1978-02-27 Light diffusion louvre for a luminaire

Country Status (5)

Country Link
BE (1) BE864411A (en)
DE (1) DE7804887U1 (en)
FR (1) FR2382647A1 (en)
GB (1) GB1554995A (en)
NL (1) NL7702208A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2301176A (en) * 1995-05-20 1996-11-27 Add Reflectors Ltd Luminaire

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926202A1 (en) * 1979-06-29 1981-01-15 Alfred Korsch GRID, ESPECIALLY LUMINOUS PROTECTION GRID FOR MIRROR GRID LIGHTS
US4407011A (en) * 1980-12-08 1983-09-27 Donn Incorporated Integrated lighting systems for suspended ceilings or the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2301176A (en) * 1995-05-20 1996-11-27 Add Reflectors Ltd Luminaire
GB2301176B (en) * 1995-05-20 1999-06-23 Add Reflectors Ltd Luminaire

Also Published As

Publication number Publication date
FR2382647B3 (en) 1980-11-21
DE7804887U1 (en) 1978-08-31
BE864411A (en) 1978-08-28
FR2382647A1 (en) 1978-09-29
NL7702208A (en) 1978-09-05

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee