Optical: systems and elements – Absorption filter – Filters in optical parallel
Reexamination Certificate
2006-11-03
2008-10-28
Allen, Stephone B. (Department: 2872)
Optical: systems and elements
Absorption filter
Filters in optical parallel
C359S892000
Reexamination Certificate
active
07443621
ABSTRACT:
A color wheel is provided for use in the illumination system of a projector. The color wheel includes a rotor and a motor for rotating the rotor, the rotor includes a ring shaped translucent area formed by color filter segments, the translucent area being adapted to continuously extend into a light path as the rotor is rotated, the rotor in a first plane perpendicular to the axis of rotation further includes first means for balancing, the rotor in a second plane perpendicular to the axis of rotation further includes second means for balancing, wherein the first and the second plane are spaced apart. Due to the dual plane balancing means, the color wheel is better balanced.
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Anon.: “Balancing Primer” Mechanical Power Transmission Association, Elastomeric Coupling Division Technical Information Bulletin, [online] 2003, XP002418628 US. Retrived from the Internet: URL:http://www.mpta.org/MPTABalancingPrime r.pdf> [retrieved on Feb. 6, 2007]. The whole document.
International Search Report for PCT/EP2006/010497, dated Feb. 16, 2007.
Auell Adam
Cunningham Nick
Moss Will
Allen Stephone B.
Callaway Jade
OC Oerlikon AG
Pearne & Gordon LLP
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