Cyclorama light
First Claim
1. A cyclorama light (CYC) comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp optical having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material; and
adjustment means for selectively adjusting the rotational position of said reflector about said optical axis, whereby the direction of projection of the light emitted from said housing can be modified substantially independently of the specific orientation of said housing.
1 Assignment
0 Petitions
Accused Products
Abstract
A cyclorama light includes a housing having generally opaque rear, bottom and side walls and an open front wall defining a window that extends from a region proximate to the upper end of the rear wall and a region proximate to the front end of the bottom wall and generally extending between the side walls. The housing defines a housing axis generally parallel to the rear and bottom walls and normal to the side walls. An elongate reflector essentially extends between the side walls and is mounted for rotary movements about the housing axis. An elongate lamp having a lamp axis is mounted on the reflector to maintain the lamp axis substantially coextensively with the housing axis, the reflector being configured to direct light generated by the elongate lamp with a predetermined intensity distribution through the window formed in the open front wall in a direction which is a function of the rotational position of the reflector about the housing axis. A filter is provided for covering the window with a color filter material, as well as an adjustment means for selectively adjusting the rotational position of the reflector about the housing axis. The direction of projection of the light emitted from the housing can thus be modified substantially independently of the specific orientation of the housing.
37 Citations
42 Claims
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1. A cyclorama light (CYC) comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp optical having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material; and
adjustment means for selectively adjusting the rotational position of said reflector about said optical axis, whereby the direction of projection of the light emitted from said housing can be modified substantially independently of the specific orientation of said housing. - View Dependent Claims (4, 5, 6, 7, 9, 10, 11, 12)
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
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2. A cyclorama light (CYC) comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally ex tending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material;
adjustment means for selectively adjusting the rotational position of said reflector about said housing axis, said adjustment means comprising a slot in said rear wall extending along a direction substantially parallel to said side walls;
a knob on the outside of said rear wall and having a shaft extending through said slot; and
an adjusting bracket on the inside of said rear wall attached to said shaft for movement with said knob, said adjusting bracket being coupled to said reflector for imparting rotary movements to said reflector with movements of said knob along said slot, whereby the direction of projection of the light emitted from said housing can be modified substantially independently of the specific orientation of said housing. - View Dependent Claims (3)
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
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8. A cyclorama light (CYC) comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material;
adjustment means for selectively adjusting the rotational position of said reflector about said housing axis, said filter means including a flexible filter frame having a width substantially equal to the width of said window and a predetermined height; and
retaining means for resiliently retaining said flexible filter frame in a position to cover said window when flexed to impart curvature in a plane substantially parallel to said side walls to entirely cover said window, whereby the direction of projection of the light emitted from said housing can be modified substantially independently of the specific orientation of said housing.
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
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13. A cyclorama light comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material; and
hinged connecting means for detachably and hingedly connecting two housings of two lights to each other at associated sides arranged in close proximity to each other. - View Dependent Claims (14, 15, 16, 17)
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
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18. A cyclorama light comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material, said reflector having a paracircular configuration including a first portion having a parabolic configuration arranged with the focal point of said parabolic portion substantially coincident with said housing axis and a second portion having a circular cylindrical portion having a center of curvature at a normal distance greater than the normal distance from said parabolic focal point to the reflecting surface of said reflector. - View Dependent Claims (19)
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
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20. A cyclorama light comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material; and
open baffles arranged between said rear wall and upper end of said window and between said bottom wall and lower end of said window to allow convection flow of cooling air past said lamp, reflector and filter means to cool same. - View Dependent Claims (21, 22)
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
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23. A cyclorama light comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material, said elongate lamp being mechanically supported by a pair of electrical sockets or connectors spaced from each other along said housing axis, at least one of said sockets being mounted for movement along said housing axis to b e fixed in one of a plurality of selected positions to change the spacing between said electrical sockets or connectors to accommodate different length lamps. - View Dependent Claims (24)
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
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25. A cyclorama light comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material and including a flexible filter frame having a width substantially equal to the width of said window and a predetermined height; and
retaining means for resiliently retaining said flexible filter frame in a position to cover said window when flexed to impart a curvature in a plane substantially parallel to said side walls to entirely cover said window. - View Dependent Claims (26, 27, 28, 29)
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
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30. A cyclorama light comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material; and
heat sink means directly attached to said reflector for movements therewith about said housing axis for drawing heat away from said reflector and dissipating the same, whereby said heat sink means removes heat and cools said reflector independently of the position of said reflector. - View Dependent Claims (31, 32, 33)
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
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34. A cyclorama light comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material; and
screen means mounted between said reflector and said window for preventing injury when said lamp shatters, said screen means including a mesh material formed of filaments rranged to provide light transmitting openings, said filaments and openings having dimensions to provide at least 90% light transmission efficiency, whereby protection against injury is provided without excessively reducing the light output of the light. - View Dependent Claims (35)
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
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36. A cyclorama light comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material; and
attachment means attachable to at least one of said walls of said housing for mounting the light in a sky position. - View Dependent Claims (37, 38, 39, 40)
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
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41. A cyclorama light comprising a housing having generally opaque rear, bottom and side walls and an open front wall defining a window extending from a region proximate to the upper end of said rear wall and a region proximate to the front end of said bottom wall and generally extending between said side walls, said housing defining a housing axis generally parallel to said rear and bottom walls and normal to said side walls;
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
an elongate lamp having a lamp axis and mounted on said reflector to maintain said lamp axis substantially coextensively with said housing axis, said reflector being configured to direct light generated by said elongate lamp with a predetermined intensity distribution through said window formed in said open front wall in a direction which is a function of the rotational position of said reflector about said housing axis;
filter means for covering said window with a color filter material; and
at least three independently adjustable legs on said bottom wall for adjusting the orientation of the light when used as a ground CYC to compensate for an uneven or non-level floor or to shift the position(s) of shadow line(s). - View Dependent Claims (42)
- an elongate reflector essentially extending between said side walls and mounted for rotary movements about said housing axis;
Specification