GB9812532D0 - Light filters - Google Patents
Light filtersInfo
- 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
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)
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)
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)
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 |
-
1998
- 1998-06-10 GB GB9812532A patent/GB2339920B/en not_active Expired - Fee Related
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 |