Illumination – Light source and modifier – Tiltable or rotatable as a unit
Reexamination Certificate
2002-01-22
2004-07-20
Sember, Thomas M. (Department: 2875)
Illumination
Light source and modifier
Tiltable or rotatable as a unit
C362S271000, C362S277000, C362S282000
Reexamination Certificate
active
06764198
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a reflective mechanism for a computer-controlled stage lamp to provide more colorful light effect by means of providing a wider projection area.
2. Description of the Related Art
Sound effect and light effect are very important to stage performance. A good light effect provides a good background to the whole performance and makes the audience focus on the performer(s). A wide variety of stage lamps have heretofore been designed to provide desired light effect. A typical stage lamp, as shown in
FIGS. 8 and 9
of the drawings, includes a computer-controlled lamp
8
with a light source (not shown) and a rotating disc (not shown) carrying various patterns thereon mounted in a casing
80
thereof. Light from the light source passes through a pattern on the rotating disc and a lens
81
and is thus incident to a reflective mechanism
9
from which the incident light is reflected, thereby providing colorful reflective images. The reflective mechanism
9
is mounted in a mounting section
82
of the casing
80
and includes a first motor
90
with an output shaft
901
extended through an inclined plate
83
. A bracket
91
is securely attached to the output shaft
901
of the first motor
90
to rotate therewith. A second motor
92
is mounted to the bracket
91
and has an output shaft
921
to which a barrel
94
is mounted. A cylindrical mirror
941
(consisting of a plurality of mirror strips) is mounted to an outer periphery of the barrel
94
for reflecting incident light from the lens
81
. The inclined plate
83
includes an opening
84
through which a wire
93
extends so as to be electrically connected to the second motor
92
for supplying power to the second motor
92
. The output shaft
901
of the first motor
90
rotates about an axis X, and the output shaft
921
of the second motor
92
rotates about another axis Y that is perpendicular to the axis X. Thus, the barrel
94
with the cylindrical mirror
941
is expected to rotate universally such that the light, after passing through the lens
81
, may be reflected by the mirror
941
to provide varying three-dimensional light images.
Nevertheless, the area of the projected light reflected by the barrel
94
is somewhat narrow as being limited by the U-shaped mounting area
82
of the casing
80
.
The present invention is intended to provide an improved reflective mechanism to solve this problem.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to provide a reflective mechanism for a computer-controlled stage lamp that provides more colorful light effect by means of providing a wider projection area.
In accordance with the present invention, a reflective mechanism is provided for a stage lamp providing an incident light. The reflective mechanism comprises:
a mounting device comprising a main plate having a hole through which an incident light from a stage lamp passes;
a first power device;
a second power device;
a rotary device mounted to the mounting device, the rotary device comprising a fixed outer ring, a middle ring concentrically, rotatably mounted in the fixed outer ring, and an inner ring concentrically, rotatably mounted in the middle ring, the inner ring of the rotary device defining a light passage through which the incident light passes, the inner ring being connected to and thus drivable by the first power device, the middle ring being connected to and thus drivable by the second power device;
a rotary frame securely attached to the middle ring to turn therewith, the rotary frame including a hole through which the incident light passes;
a reflective device comprising a mirror frame rotatably mounted to the rotary frame and a mirror means mounted to the mirror frame for reflecting the incident light passing through the hole of the rotary frame; and
a transmission device including a first transmission member securely mounted to the inner ring to turn therewith, the transmission device further including a second transmission member securely mounted to the mirror frame to turn therewith, the second transmission member being connected to the first transmission member.
Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 2909652 (1959-10-01), Pratt
patent: 4663698 (1987-05-01), Tomlinson
patent: 4769743 (1988-09-01), Callahan
patent: 6220727 (2001-04-01), Chang
patent: 6461021 (2002-10-01), Warnecke
Kamrath Alan D.
Negron Ismael
Nikolai & Mersereau , P.A.
Sember Thomas M.
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