Matte box quick assembly system

G - Physics – 02 – B

Patent

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Details

G02B 7/00 (2006.01) G03B 11/00 (2006.01) G03B 17/12 (2006.01)

Patent

CA 2468702

An optical filters quick assembly support system or a "Matte Box" as it is known in the film industry, supporting plurality of no-tool, quick-change, snap-on, independently 360~-rotating filter-holder stages, allowing freedom of operation in the horizontal, vertical and rotational planes. A mount base ring having an intern al circular coupling slot at one face for attaching the desired number of filter-holder stages serves as an initial receiving unit. The same mount ring having two slidable and lockable brackets for connecting a sunshade in an adjustable manner, assembled to it. Filter-holder stages consisting of a ring having the same internal circular coupling slot as the mount base ring at one face and one stationary and one spring-loaded filter- holder guide attached to the opposite face. The filter-holder guides having a corresponding to the coupling slot semi-circular sliding ribs for coupling with the mount base ring or any additional filter-holder stage.

L'invention concerne un système de montage rapide de filtres optiques ou "porte-cache", nom sous lequel il est connu dans l'industrie cinématographique, qui reçoit plusieurs étages de porte-filtres encliquetables, à changement rapide sans outils et à rotation en azimut, assurant une liberté de manoeuvre sur les plans de rotation horizontal et vertical. Un socle de montage, présentant, sur une face, une fente de fixation circulaire interne pour fixer le nombre désiré d'étages de porte-filtres, fait office de support initial. Le socle de montage comprend deux pattes de fixation coulissantes et verrouillables, solidaires du socle, qui se connectent de manière réglable à un pare-soleil. Les étages de porte-filtres comprennent, sur une face, une bague munie d'une fente de fixation circulaire interne identique à la bague du socle de montage, et un guide de porte-filtres fixe et un guide de porte-filtres à ressort attachés à la face opposée. Les guides de porte-filtres présentent une fente homologue des nervures coulissantes semi-circulaires de la fente de fixation qui se fixent au socle de montage ou à tout autre étage de porte-filtres supplémentaire. supporting plurality of no-tool, quick-change, snap-on, independently 360·-rotating filter-holder stages,

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