GB646642A - Improvements in colour lighting apparatus - Google Patents

Improvements in colour lighting apparatus

Info

Publication number
GB646642A
GB646642A GB36761/46A GB3676146A GB646642A GB 646642 A GB646642 A GB 646642A GB 36761/46 A GB36761/46 A GB 36761/46A GB 3676146 A GB3676146 A GB 3676146A GB 646642 A GB646642 A GB 646642A
Authority
GB
United Kingdom
Prior art keywords
beams
light
reflectors
parallel
sources
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
GB36761/46A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB36761/46A priority Critical patent/GB646642A/en
Publication of GB646642A publication Critical patent/GB646642A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
    • 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
    • F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
    • 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

Abstract

646,642. Theatre lighting. WILLIAMS, R. G. Dec. 12, 1946, No. 36761. [Class 132 (i)] [Also in Group XI] A colour lighting apparatus comprises the combination of means so arranged as to split each of several major beams of different colours into a plurality of component beams, means so arranged as to transpose at least some of the component beams so as to mingle the colours, and means so arranged as to combine the component beams into a unitary beam in their transposed relationship. Four light sources giving light of four different colours as by coloured screens &c. are arranged each at a corner of a rectangle RGBW, Fig. 4, the points B, W (not shown) being vertically below the points R, G, respectively. The light from each source is reflected by a parabolic reflector, e.g. 3 or 4 and projected forwardly as parallel beams e.g. 1R and 1G, which pass through nests of black masking rings 5 and 6 which substantially prevent the passage of light direct from the sources. The beams 1R, 1G are divided by reflectors 7, 8 which deflect component beams R2, G<SP>1</SP> and allow beams R<SP>1</SP>, G<SP>2</SP> to pass straight ahead. After crossing the beams R2, G<SP>1</SP> are again deflected by reflectors 9, 10 to emerge parallel with the beams R<SP>1</SP> and G<SP>2</SP>. In an alternative construction the black rings 5 may be replaced by lenses formed with circular prisms. Alternatively, no reflectors may be employed, the direct light from the sources R, G &c. being passed through a prismatic lens system to produce the parallel beams R<SP>1</SP>, G<SP>2</SP> &c. and the crossing beams R<SP>2</SP>, G<SP>1</SP> &c., and a further prismatic lens system is employed to render all the emergent beams parallel. As shown in Fig. 6 the major beam directed rearwardly from each source R, G may be split into component beams and the required transposition effected by reflectors 13, 14, H, 16 the reversed beams R<SP>2</SP>, G<SP>1</SP> being masked by plates 19, 20 and directed to refracting prisms 17, 18 to emerge parallel with the beams R<SP>1</SP>, G<SP>2</SP> also masked by the plates 19, 20. In a further modification the four major beams are produced by a single light source by four reflectors and a multi colour screen may be interposed between the sources and the reflector so that each reflector receives light of a particular colour. Specification 640,693 is referred to in the Provisional Specification.
GB36761/46A 1946-12-12 1946-12-12 Improvements in colour lighting apparatus Expired GB646642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB36761/46A GB646642A (en) 1946-12-12 1946-12-12 Improvements in colour lighting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36761/46A GB646642A (en) 1946-12-12 1946-12-12 Improvements in colour lighting apparatus

Publications (1)

Publication Number Publication Date
GB646642A true GB646642A (en) 1950-11-29

Family

ID=10390989

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36761/46A Expired GB646642A (en) 1946-12-12 1946-12-12 Improvements in colour lighting apparatus

Country Status (1)

Country Link
GB (1) GB646642A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1291703B (en) * 1965-10-12 1969-04-03 Winstornley John Eric Device for creating colored light effects
US7659674B2 (en) 1997-08-26 2010-02-09 Philips Solid-State Lighting Solutions, Inc. Wireless lighting control methods and apparatus
US7959320B2 (en) 1999-11-18 2011-06-14 Philips Solid-State Lighting Solutions, Inc. Methods and apparatus for generating and modulating white light illumination conditions
WO2012117168A1 (en) 2011-02-28 2012-09-07 Jean Pierre Lazzari Method for forming a colour laser image with a high level of reflectivity and document on which a colour laser image is produced in this way

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1291703B (en) * 1965-10-12 1969-04-03 Winstornley John Eric Device for creating colored light effects
US7659674B2 (en) 1997-08-26 2010-02-09 Philips Solid-State Lighting Solutions, Inc. Wireless lighting control methods and apparatus
US7959320B2 (en) 1999-11-18 2011-06-14 Philips Solid-State Lighting Solutions, Inc. Methods and apparatus for generating and modulating white light illumination conditions
WO2012117168A1 (en) 2011-02-28 2012-09-07 Jean Pierre Lazzari Method for forming a colour laser image with a high level of reflectivity and document on which a colour laser image is produced in this way

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