Unbalanced hub design
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 3, 2018
Issued Date -
N/A
app pub date -
Aug 15, 2017
filing date -
Jul 1, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A optical device comprises a colour wheel, the colour wheel having a hub portion configured to act as a rotor for coupling to a motor and having a disk-shaped surface; an optically active radial portion, attached to or integrated with the hub portion and configured to optically process incident light; and a balancing adaptation to the disk-shaped surface of the hub portion, comprising one or more of: (a) a recess in the disk-shaped surface extending to an edge of the disk-shaped surface; (b) an annular groove in the disk-shaped surface having a non-uniform width and/or being non-concentric with the disk-shaped surface; (c) an annular groove in the disk-shaped surface, at least a portion of which is filled by a balancing mass part; and (d) a groove and/or a matrix of recesses in the disk-shaped surface arranged to define a portion of an annulus in shape.
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