GB629266A - Improvements in colour filters and projection apparatus for using such filters - Google Patents
Improvements in colour filters and projection apparatus for using such filtersInfo
- Publication number
- GB629266A GB629266A GB23754/46A GB2375446A GB629266A GB 629266 A GB629266 A GB 629266A GB 23754/46 A GB23754/46 A GB 23754/46A GB 2375446 A GB2375446 A GB 2375446A GB 629266 A GB629266 A GB 629266A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colour
- filters
- lamp
- housing
- strips
- 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
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
- 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
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Projection Apparatus (AREA)
Abstract
629,266. Light projectors. SKEWES, J. E. Aug. 10, 1946, No. 23754. [Class 75(iv)] [Also in Group XX] A colour projector apparatus comprises as shown in Fig. 4, three colour filters 5, 6 and 7 mounted in a housing 8 on co-axial supports 11 which are independently rotatable by pinions 12 which are respectively geared to an operating handle. Light passes into the housing 8 from a lamp 10, which may be an incandescent lamp, a carbon arc lamp or a discharge tube. Each colour filter is in the form of a transparent or translucent disc having therein alternating curved strips 1, 2 of which the strips 1 are coloured and project from a maximum colour area 3 to a maximum clear area 4. The colour filters may also be in the form of rectangular slides or of cylinders.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB23754/46A GB629266A (en) | 1946-08-10 | 1946-08-10 | Improvements in colour filters and projection apparatus for using such filters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB23754/46A GB629266A (en) | 1946-08-10 | 1946-08-10 | Improvements in colour filters and projection apparatus for using such filters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB629266A true GB629266A (en) | 1949-09-15 |
Family
ID=10200769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23754/46A Expired GB629266A (en) | 1946-08-10 | 1946-08-10 | Improvements in colour filters and projection apparatus for using such filters |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB629266A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0298492A2 (en) * | 1987-07-09 | 1989-01-11 | Dai-Ichi Seiko Co. Ltd. | An illumination device |
FR2631684A1 (en) * | 1988-05-20 | 1989-11-24 | Leclercq Didier | Device for colouring light beams |
EP0352755A2 (en) * | 1988-07-26 | 1990-01-31 | Morpheus Lights, Inc. | Spectral filter module |
EP0463204A1 (en) * | 1990-06-15 | 1992-01-02 | Morpheus Lights, Inc. | Scrolling primary color changer |
US5126886A (en) * | 1989-04-10 | 1992-06-30 | Morpheus Lights, Inc. | Scrolling primary color changer |
EP0565218A2 (en) * | 1986-05-15 | 1993-10-13 | Vari-Lite, Inc. | Colour wheel assembly for lighting equipment |
EP1158239A1 (en) * | 2000-05-22 | 2001-11-28 | COEMAR S.p.A. | Projector particularly for porjecting images in variable dimensions and in infinite colors |
US6623144B2 (en) | 1991-04-30 | 2003-09-23 | Genlyte Thomas Group Llc | High intensity lighting projectors |
DE19523351B4 (en) * | 1995-06-27 | 2005-07-28 | Welm, Klaus, Dipl.-Ing. (FH) | Color changing unit for lighting |
EP1825323A1 (en) * | 2004-11-19 | 2007-08-29 | Whiterock Design, LLC | Stage lighting methods and apparatus |
EP2060935A1 (en) * | 2007-11-14 | 2009-05-20 | Schott AG | Colour filter and method for its production |
US7901089B2 (en) | 2004-11-19 | 2011-03-08 | Whiterock Design, Llc | Optical system with array light source |
US8113691B2 (en) | 2008-03-11 | 2012-02-14 | Robe Lighting S.R.O. | Color change mechanism |
US8282245B2 (en) | 2004-11-19 | 2012-10-09 | Whiterock Design, Llc | Stage lighting methods and apparatus |
EP3418624A1 (en) | 2017-06-20 | 2018-12-26 | Harman Professional Denmark ApS | Method of providing color temperature correction of a light beam using a color filter system |
-
1946
- 1946-08-10 GB GB23754/46A patent/GB629266A/en not_active Expired
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0565218A2 (en) * | 1986-05-15 | 1993-10-13 | Vari-Lite, Inc. | Colour wheel assembly for lighting equipment |
EP0565218A3 (en) * | 1986-05-15 | 1994-01-19 | Vari Lite Inc | |
EP0298492A2 (en) * | 1987-07-09 | 1989-01-11 | Dai-Ichi Seiko Co. Ltd. | An illumination device |
EP0298492A3 (en) * | 1987-07-09 | 1990-05-16 | Dai-Ichi Seiko Co. Ltd. | An illumination device |
FR2631684A1 (en) * | 1988-05-20 | 1989-11-24 | Leclercq Didier | Device for colouring light beams |
EP0352755A2 (en) * | 1988-07-26 | 1990-01-31 | Morpheus Lights, Inc. | Spectral filter module |
EP0352755A3 (en) * | 1988-07-26 | 1991-02-27 | Morpheus Lights, Inc. | Spectral filter module |
US5126886A (en) * | 1989-04-10 | 1992-06-30 | Morpheus Lights, Inc. | Scrolling primary color changer |
EP0463204A1 (en) * | 1990-06-15 | 1992-01-02 | Morpheus Lights, Inc. | Scrolling primary color changer |
US6623144B2 (en) | 1991-04-30 | 2003-09-23 | Genlyte Thomas Group Llc | High intensity lighting projectors |
DE19523351B4 (en) * | 1995-06-27 | 2005-07-28 | Welm, Klaus, Dipl.-Ing. (FH) | Color changing unit for lighting |
EP1158239A1 (en) * | 2000-05-22 | 2001-11-28 | COEMAR S.p.A. | Projector particularly for porjecting images in variable dimensions and in infinite colors |
EP1825323A1 (en) * | 2004-11-19 | 2007-08-29 | Whiterock Design, LLC | Stage lighting methods and apparatus |
EP1825323A4 (en) * | 2004-11-19 | 2009-04-08 | Whiterock Design Llc | Stage lighting methods and apparatus |
US7901089B2 (en) | 2004-11-19 | 2011-03-08 | Whiterock Design, Llc | Optical system with array light source |
US8282245B2 (en) | 2004-11-19 | 2012-10-09 | Whiterock Design, Llc | Stage lighting methods and apparatus |
EP2060935A1 (en) * | 2007-11-14 | 2009-05-20 | Schott AG | Colour filter and method for its production |
US8002442B2 (en) | 2007-11-14 | 2011-08-23 | Schott Ag | Color filter and method for its manufacture |
CN101476699B (en) * | 2007-11-14 | 2013-05-01 | Auer照明有限公司 | Color filter and method for its manufacture |
US8113691B2 (en) | 2008-03-11 | 2012-02-14 | Robe Lighting S.R.O. | Color change mechanism |
EP3418624A1 (en) | 2017-06-20 | 2018-12-26 | Harman Professional Denmark ApS | Method of providing color temperature correction of a light beam using a color filter system |
EP3587901A1 (en) | 2017-06-20 | 2020-01-01 | Harman Professional Denmark ApS | Method of providing color temperature correction of a light beam using a color filter system |
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