US5777694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color wheel with plastic film filters
Assignee: Texas Instruments Inc
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Filing: 1995-06-13
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Granted: 1998-07-07
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Expires: 2015-06-13
Abstract
Abstract A color wheel (15) for use in a display system (10). The color wheel (15) is comprised of a rigid hub (23) and an outer perimeter of color filter segments (21), which are made from a thin plastic material.
Inventors
- 👤 Frank Poradish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:01
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; H04N9/3102; H04N9/3111; H04N9/3114; G; G02; G02B; G02B26/00; G02B26/007; G02B26/008; G02B26/08; G02B26/0816; G02B26/0833; G02B26/0841; H04N9/30; G02B7/00; G02B7/006
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
83 words
A color wheel for a display system, comprising: a hub having a generally circulate shape and being made from a rigid material; and two or more color filter segments made from a plastic material, said filter segments being substantially pie-shaped and attached to said hub such that circular edges of said filter segments extend from said hub and opposing edges of said filter segments are secured to said hub and such that each of said filter segments abuts other of said filter segments.
Claim 2
Dependent Claim
83 words
A color wheel for a display system, comprising: a hub having a generally circulate shape and being made from a rigid material; and two or more color filter segments made from a plastic material, said filter segments being substantially pie-shaped and attached to said hub such that circular edges of said filter segments extend from said hub and opposing edges of said filter segments are secured to said hub and such that each of said filter segments abuts other of said filter segments.
Claim 3
Dependent Claim
35 words
The color wheel of claim 1, wherein said hub has a front piece and a back piece for attachment together, and wherein said filter segments are secured between said front piece and said back piece.
Claim 4
Dependent Claim
26 words
The color wheel of claim 2, wherein said front piece and said back piece have self-attaching means for attaching said front piece to said back piece.
Claim 5
Dependent Claim
58 words
The color wheel of claim 2, wherein one of said front piece or said back piece has a sleeve extending from its inner center surface for attachment around a shaft of said color wheel and the other of said front piece or said back piece has a corresponding opening in its inner center surface for receiving said sleeve.
Claim 6
Dependent Claim
18 words
The color wheel of claim 1, wherein said filter segments are attached to one side of said hub.
Claim 7
Dependent Claim
15 words
The color wheel of claim 1, wherein said filter segments are absorptive color filter segments.
Claim 8
Dependent Claim
15 words
The color wheel of claim 1, wherein said hub is made from a plastic material.
Claim 9
Dependent Claim
16 words
The color wheel of claim 1, wherein said filter segments are made from a plastic material.
Claim 10
Dependent Claim
18 words
The color wheel of claim 1, wherein said filter segments are in the order of 1 millimeter thick.
Claim 11
Dependent Claim
18 words
The color wheel of claim 1, wherein said hub is thicker at its center than at its perimeter.
Claim 12
Dependent Claim
77 words
A color wheel for a display system, comprising: a hub having a generally circular shape and being made from a rigid material; and a one-piece color filter made from a plastic material, said filter being substantially ring-shaped and attached around a perimeter of said hub such that an outer circular edge of said filter extends from said hub and an inner circular edge of said filter is attached to said hub, said filter having differently color areas.
Claim 13
Dependent Claim
77 words
A color wheel for a display system, comprising: a hub having a generally circular shape and being made from a rigid material; and a one-piece color filter made from a plastic material, said filter being substantially ring-shaped and attached around a perimeter of said hub such that an outer circular edge of said filter extends from said hub and an inner circular edge of said filter is attached to said hub, said filter having differently color areas.
Claim 14
Dependent Claim
34 words
The color wheel of claim 11, wherein said hub has a front piece and a back piece for attachment together, and wherein said filter is secured between said front piece and said back piece.
Claim 15
Dependent Claim
26 words
The color wheel of claim 12, wherein said front piece and said back piece have self-attaching means for attaching said front piece to said back piece.
Claim 16
Dependent Claim
58 words
The color wheel of claim 12, wherein one of said front piece of said back piece has a sleeve extending from its inner center surface for attachment around a shaft of said color wheel and the other of said front piece or said back piece has a corresponding opening in its inner center surface for receiving said sleeve.
Claim 17
Dependent Claim
17 words
The color wheel of claim 11, wherein said filter is attached to one side of said hub.
Claim 18
Dependent Claim
14 words
The color wheel of claim 11, wherein said filter is an absorptive color filter.
Claim 19
Dependent Claim
15 words
The color wheel of claim 11, wherein said hub is made from a plastic material.
Claim 20
Dependent Claim
15 words
The color wheel of claim 11, wherein said filter is made from a plastic material.
Claim 21
Dependent Claim
17 words
The color wheel of claim 11, wherein said filter is in the order of 1 millimeter thick.
Claim 22
Dependent Claim
18 words
The color wheel of claim 11, wherein said hub is thicker at its center than at its perimeter.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-07-06 | 2002-01-05 | 2002-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-06 | 2006-01-05 | 2006-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-06 | 2010-01-05 | 2010-07-07 | $7700.00 | Window Closed / Lapsed |