Color wheel with balancing groove for securely holding a balancing medium
AssigneeJDS Uniphase Corporation
InventorHung Xuan Nguyen
Life of this patent
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Abstract
A color wheel is disclosed having balancing groove. The color wheel includes a carrier, having a central axis about which it is rotated. An external surface and a periphery rotates along the central axis; a color filter plate shares a same central axis with the carrier, wherein an annular groove is disposed on the external surface of the carrier. The groove is shaped, for example in a wedge so that once a balancing substance such as epoxy is added into the annular groove to balance the color wheel, it becomes lodged therein after curing as the opening is smaller than the cured epoxy.
Claims9
A color wheel comprising a motor for rotating a color filter about a rotational central axis thereof, and a circular disk having a groove about its periphery sharing a same axis of rotation with the color filter, the groove having a cross section defining an opening having a bottom face and at least two non-parallel faces which prevent a cured material filling the opening from being removed when the circular disc is rotated.
A color wheel, comprising a disc drivable by a motor, the disc having an outer rim, the outer rim having a groove therein with an inner surface with a predetermined cross-sectional shape,
- a cured counter balance material at a location within the groove of the disc for balancing the color wheel, wherein the cross section of the groove is such that an abutment is present within the groove to prevent cured counter balance material from dislodging from the groove;
- and, one or more color filters mounted to rotate as the disc rotates when driven by the motor, wherein the groove has inner non parallel sidewalls.
Dependencies are inferred from the claim text.