GB9812532D0 - Light filters - Google Patents

Light filters

Info

Publication number
GB9812532D0
GB9812532D0 GBGB9812532.1A GB9812532A GB9812532D0 GB 9812532 D0 GB9812532 D0 GB 9812532D0 GB 9812532 A GB9812532 A GB 9812532A GB 9812532 D0 GB9812532 D0 GB 9812532D0
Authority
GB
United Kingdom
Prior art keywords
light filters
filters
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.)
Granted
Application number
GBGB9812532.1A
Other versions
GB2339920B (en
GB2339920A (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.)
JEAL BARRY
Original Assignee
JEAL BARRY
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 JEAL BARRY filed Critical JEAL BARRY
Priority to GB9812532A priority Critical patent/GB2339920B/en
Publication of GB9812532D0 publication Critical patent/GB9812532D0/en
Publication of GB2339920A publication Critical patent/GB2339920A/en
Application granted granted Critical
Publication of GB2339920B publication Critical patent/GB2339920B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/002—Optical devices or arrangements for the control of light using movable or deformable optical elements the movement or the deformation controlling the frequency of light, e.g. by Doppler effect
    • 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
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
    • F21V9/083—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light for portable lighting devices
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
GB9812532A 1998-06-10 1998-06-10 Light filters Expired - Fee Related GB2339920B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9812532A GB2339920B (en) 1998-06-10 1998-06-10 Light filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9812532A GB2339920B (en) 1998-06-10 1998-06-10 Light filters

Publications (3)

Publication Number Publication Date
GB9812532D0 true GB9812532D0 (en) 1998-08-05
GB2339920A GB2339920A (en) 2000-02-09
GB2339920B GB2339920B (en) 2002-05-22

Family

ID=10833531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9812532A Expired - Fee Related GB2339920B (en) 1998-06-10 1998-06-10 Light filters

Country Status (1)

Country Link
GB (1) GB2339920B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2306290A1 (en) * 2000-04-20 2001-10-20 Applied Physics Specialties Limited Variable optical filter
US8699000B2 (en) 2010-12-23 2014-04-15 Asml Netherlands B.V. Illumination system for a lithographic apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4800474A (en) * 1986-05-15 1989-01-24 Vari-Lite, Inc. Color wheel assembly for lighting equipment

Also Published As

Publication number Publication date
GB2339920B (en) 2002-05-22
GB2339920A (en) 2000-02-09

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Legal Events

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

Effective date: 20030610