GB2063447B - Lighting unit with selectively positionable diffuser - Google Patents

Lighting unit with selectively positionable diffuser

Info

Publication number
GB2063447B
GB2063447B GB7939557A GB7939557A GB2063447B GB 2063447 B GB2063447 B GB 2063447B GB 7939557 A GB7939557 A GB 7939557A GB 7939557 A GB7939557 A GB 7939557A GB 2063447 B GB2063447 B GB 2063447B
Authority
GB
United Kingdom
Prior art keywords
diffuser
lighting unit
selectively positionable
positionable
selectively
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
GB7939557A
Other versions
GB2063447A (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.)
PAGE Ltd JOHN
Original Assignee
PAGE Ltd JOHN
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 PAGE Ltd JOHN filed Critical PAGE Ltd JOHN
Priority to GB7939557A priority Critical patent/GB2063447B/en
Publication of GB2063447A publication Critical patent/GB2063447A/en
Application granted granted Critical
Publication of GB2063447B publication Critical patent/GB2063447B/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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB7939557A 1979-11-15 1979-11-15 Lighting unit with selectively positionable diffuser Expired GB2063447B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7939557A GB2063447B (en) 1979-11-15 1979-11-15 Lighting unit with selectively positionable diffuser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7939557A GB2063447B (en) 1979-11-15 1979-11-15 Lighting unit with selectively positionable diffuser

Publications (2)

Publication Number Publication Date
GB2063447A GB2063447A (en) 1981-06-03
GB2063447B true GB2063447B (en) 1983-07-06

Family

ID=10509218

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7939557A Expired GB2063447B (en) 1979-11-15 1979-11-15 Lighting unit with selectively positionable diffuser

Country Status (1)

Country Link
GB (1) GB2063447B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4972306A (en) * 1989-01-23 1990-11-20 Vari-Lite, Inc. Compact variable diffuser for use in a luminaire
US5758955A (en) * 1995-07-11 1998-06-02 High End Systems, Inc. Lighting system with variable shaped beam
GB2316477B (en) * 1995-11-13 1998-08-19 High End Systems Inc Lighting system
US5665305A (en) * 1995-11-13 1997-09-09 Belliveau; Richard S. Lighting system with multiple beam shapes
US20070290386A1 (en) * 2004-11-10 2007-12-20 Martin Professional A/S Method and Apparatus for Project Light With Gel
FR2930052A1 (en) * 2008-04-15 2009-10-16 Michel Andre Blanc Light diffusing/reflecting device for taking transportable photographic shot or video of e.g. pen, in studio, has diffusing plates pivoted on rotational axles from opening position to closed position, independently from one another

Also Published As

Publication number Publication date
GB2063447A (en) 1981-06-03

Similar Documents

Publication Publication Date Title
JPS52138947A (en) Light diffuser
GB1553928A (en) Lighting fixture
JPS5645507A (en) Lighting device
GB2066443B (en) Lamp/reflector unit
GB2052718B (en) Circular fluorescent lamp unit with slider connection
JPS563992A (en) Illumination unit
GB2063447B (en) Lighting unit with selectively positionable diffuser
ZA804690B (en) Plastic lamp
EP0022667A3 (en) Lighting unit
JPS55120077A (en) Lighting device
JPS561428A (en) Switch with lamp
JPS52116671A (en) Lamp with jacket
JPS55164879A (en) Display device with builttin fluolescent lamp
JPS55164878A (en) Display device with builttin fluolescent lamp
JPS568020A (en) Earpick with illumination
JPS52118892A (en) Eyeespectrum with uniform illumination
GB2049912B (en) Illumination sources
JPS5645511A (en) Lighting device
JPS55117806A (en) Lighting duct
JPS5663349A (en) Turbineehandpiece with lighting
JPS5645509A (en) Lighting device
JPS5675632A (en) Lighting device
JPS5645512A (en) Lighting device
JPS5645502A (en) Lighting device
JPS5645506A (en) Lighting device

Legal Events

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