GB279658A - Improvements relating to apparatus for projecting pictures and the like - Google Patents

Improvements relating to apparatus for projecting pictures and the like

Info

Publication number
GB279658A
GB279658A GB3027026A GB3027026A GB279658A GB 279658 A GB279658 A GB 279658A GB 3027026 A GB3027026 A GB 3027026A GB 3027026 A GB3027026 A GB 3027026A GB 279658 A GB279658 A GB 279658A
Authority
GB
United Kingdom
Prior art keywords
filters
frame
rotatable
filter
axis
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
GB3027026A
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.)
VICTOR ANDERSON HADDICK
Original Assignee
VICTOR ANDERSON HADDICK
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 VICTOR ANDERSON HADDICK filed Critical VICTOR ANDERSON HADDICK
Priority to GB3027026A priority Critical patent/GB279658A/en
Publication of GB279658A publication Critical patent/GB279658A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Abstract

279,658. Haddick, V. A. Nov. 30, 1926. Optical-projection apparatus. - In apparatus comprising different colour filters rotatable round an axis so that any of the filters may be brought into the projection beam, the filters are movable to and from the projector to vary the intensity of colour in the beam, and each filter mav be rotatable about an axis in its own plane. The filters may consist of coloured glasses or lenses removably held in a frame comprising two portions 3<a>, 3b clamped together, and stops 6 may be provided to engage a stop 7 hinged at 7<a> and position the filters when the frame is rotated. The frame is slidable along its spindle 4. As shown in Fig. 4, each filter 2 is carried by a ring rotatable on trunnions in a frame 3.
GB3027026A 1926-11-30 1926-11-30 Improvements relating to apparatus for projecting pictures and the like Expired GB279658A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3027026A GB279658A (en) 1926-11-30 1926-11-30 Improvements relating to apparatus for projecting pictures and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3027026A GB279658A (en) 1926-11-30 1926-11-30 Improvements relating to apparatus for projecting pictures and the like

Publications (1)

Publication Number Publication Date
GB279658A true GB279658A (en) 1927-11-03

Family

ID=10304973

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3027026A Expired GB279658A (en) 1926-11-30 1926-11-30 Improvements relating to apparatus for projecting pictures and the like

Country Status (1)

Country Link
GB (1) GB279658A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1832807A1 (en) * 2006-03-10 2007-09-12 COEMAR S.p.A. Colour changer for spotlights

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1832807A1 (en) * 2006-03-10 2007-09-12 COEMAR S.p.A. Colour changer for spotlights
US7537360B2 (en) 2006-03-10 2009-05-26 Coemar S.P.A. Color changer particularly for spotlights and the like

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