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US 8,573,810 B2Granted
Dual in focus gobo
AssigneeProduction Resource Group, LLC
InventorsRussel B Mahaffey, Breck M. Outland, David A. Friedersdorff
Life of this patent
Estimating the term…
Abstract
A gobo holder with two gobos that are rotatable one relative to the other. The gobos are located with their patterned surfaces facing one another and very close to one another so that both can be in focus at the same time.
Claims26
A gobo assembly, comprising:
- a gobo holder, having first surfaces for mounting said gobo holder in a luminaire and having a first gobo holding surface holding a first gobo, and said gobo holder having a second gobo holding surface holding a second gobo,
- said first gobo holding surface having a first rotatable part that rotates said first gobo relative to said second gobo, and relative to said gobo holder, where said wherein said first gobo has a gobo pattern on a pattern surface of said first gobo, and said second gobo has an independent gobo pattern on a pattern surface of said second gobo, wherein said pattern surface of said first gobo faces to said pattern surface of said second gobo, and is separated therefrom by a distance of less than 0.005 inches.
A gobo assembly, comprising:
- a gobo holder, having first surfaces for mounting said gobo holder in a luminaire, said gobo holder holding a first gobo with a patterned gobo surface, and a second gobo with a second patterned surface, with said patterned surface of said first gobo facing said patterned surface of said second gobo, and with a distance separating said patterned surface of said first and second gobo which is less than a thickness of either of said first or second gobos, and where said gobo holder includes a first flat surface, connected to said first gobo, said first flat surface being substantially flat with an indentation area for a ball therein, and said flat surface oriented substantially perpendicular to the patterned gobo surface, and said gobo holder also includes a second flat surface, connected to said second gobo, said second flat surface also being flat with an indentation area for a ball therein and facing and parallel to said first flat surface, and a ball bearing held between said indentation area of said first flat surface and said indentation area of said second flat surface, and guiding rotation between said first flat surface and said second flat surface.
A gobo assembly, comprising:
- a gobo holder, having first surfaces for mounting said gobo holder in a luminaire, said gobo holder holding at least a first gobo with a patterned gobo surface, and said gobo holder having a first gobo holding surface having a first rotatable part that allows said first gobo to be rotated relative to said gobo holder, said gobo holder also rotatable relative to said luminaire;
- a controllable rotation part that rotates said gobo holder relative to said luminaire;
- a second gobo with a second patterned surface, where a relative rotation amount between said first and second gobos is set by said first rotatable part, where said patterned surface of said first gobo facing said patterned surface of said second gobo, and with a distance separating said patterned surface of said first and second gobo which is less than a thickness of either of said first or second gobos wherein both said first gobo is rotatable relative to said gobo holder, and said gobo holder is rotatable relative to said luminaire, wherein said second gobo is also rotatable relative to said gobo holder, and where said gobo holder is coupled to a first flat surface, connected to said first gobo, said first flat surface being substantially flat with an indentation area for a ball therein, and said flat surface oriented substantially perpendicular to the patterned gobo surface, and said gobo holder also includes a second flat surface which is coupled to said second gobo, said second flat surface also being flat with an indentation area for a ball therein and facing and parallel to said first flat surface, and a ball bearing held between said indentation area of said first flat surface and said indentation area of said second flat surface, and guiding rotation between said first flat surface and said second flat surface.
Dependencies are inferred from the claim text.