Patent US7221759B2 successfully refreshed from Google Patents.
US7221759B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projector with enhanced security camcorder defeat
Assignee: Eastman Kodak Co
•
Filing: 2003-03-27
•
Granted: 2007-05-22
•
Expires: 2023-03-27
Abstract
Abstract A projector ( 10 ) with enhanced security camcorder defeat including a copy protection illumination system ( 1 ) for illuminating a spatial light modulator ( 30 ) comprises: a polychromatic light source ( 20 ); uniformizing optics ( 22 ) for homogenizing light from the polychromatic light source to provide a uniform illumination field; relay optics; dichroic optics; an interference modulation element ( 5 ) located at a plane in an optical path located between the polychromatic light source and the spatial light modulator; and a detection means for determining the absence of the interference modulation element.
Inventors
- 👤 David J. Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:13
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/913; H04N5/74; H04N2005/91307; H04N2005/91314; H04N2005/91335; H04N2005/91342; H04N2005/91357; H04N2005/91371; H04N2005/91392; H04N9/00; H04N9/12; H04N9/31
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
86 words
A projector with enhanced security camcorder defeat including a copy protection illumination system for illuminating a spatial light modulator comprising: (a) a polychromatic light source; (b) uniformizing optics for homogenizing light from said polychromatic light source to provide a uniform illumination field; (c) relay optics; (d) dichroic optics; (e) an interference modulation element located at a plane in an optical path located between said polychromatic light source and said spatial light modulator; and (f) a detection means for determining the absence of said interference modulation element.
Claim 2
Dependent Claim
86 words
A projector with enhanced security camcorder defeat including a copy protection illumination system for illuminating a spatial light modulator comprising: (a) a polychromatic light source; (b) uniformizing optics for homogenizing light from said polychromatic light source to provide a uniform illumination field; (c) relay optics; (d) dichroic optics; (e) an interference modulation element located at a plane in an optical path located between said polychromatic light source and said spatial light modulator; and (f) a detection means for determining the absence of said interference modulation element.
Claim 3
Dependent Claim
22 words
A projector with enhanced security camcorder defeat as in claim 1 wherein said absence of said interference modulation element triggers a response.
Claim 4
Dependent Claim
19 words
A projector with enhanced security camcorder defeat as in claim 2 wherein said response prevents operation of said projector.
Claim 5
Dependent Claim
20 words
A projector with enhanced security camcorder defeat as in claim 2 wherein said response is an audible or visible alarm.
Claim 6
Dependent Claim
21 words
A projector with enhanced security camcorder defeat as in claim 2 wherein said response is a signal to a third party.
Claim 7
Dependent Claim
17 words
A copy protection security system as in claim 1 wherein said detection means is an interlock switch.
Claim 8
Dependent Claim
17 words
A copy protection security system as in claim 6 wherein said interlock switch is an electronic interlock.
Claim 9
Dependent Claim
79 words
A projector with enhanced security camcorder defeat including a copy protection imaging system comprising: (a) a spatial light modulator; (b) image relay optics; (c) a dichroic combiner; (d) a projection lens; (e) an interference modulation element located at a plane in an optical path located between said spatial light modulator and said projection lens, or at a plane in the optical path within said projection lens; and (f) a detector for determining an absence of said interference modulation element.
Claim 10
Dependent Claim
79 words
A projector with enhanced security camcorder defeat including a copy protection imaging system comprising: (a) a spatial light modulator; (b) image relay optics; (c) a dichroic combiner; (d) a projection lens; (e) an interference modulation element located at a plane in an optical path located between said spatial light modulator and said projection lens, or at a plane in the optical path within said projection lens; and (f) a detector for determining an absence of said interference modulation element.
Claim 11
Dependent Claim
22 words
A projector with enhanced security camcorder defeat as in claim 8 wherein said absence of said interference modulation element triggers a response.
Claim 12
Dependent Claim
19 words
A projector with enhanced security camcorder defeat as in claim 9 wherein said response prevents operation of said projector.
Claim 13
Dependent Claim
20 words
A projector with enhanced security camcorder defeat as in claim 9 wherein said response is an audible or visible alarm.
Claim 14
Dependent Claim
21 words
A projector with enhanced security camcorder defeat as in claim 9 wherein said response is a signal to a third party.
Claim 15
Dependent Claim
16 words
A copy protection security system as in claim 8 wherein said detector is an interlock switch.
Claim 16
Dependent Claim
17 words
A copy protection security system as in claim 13 wherein said interlock switch is an electronic interlock.
Claim 17
Dependent Claim
222 words
A projector with enhanced security camcorder defeat for projecting a multicolor image onto a display surface comprising: (a) a polychromatic light source; (b) uniformizing means for homogenizing light from said polychromatic light source to provide a uniform illumination field; (c) condenser relay optics for directing said uniform illumination field toward a dichroic separator, said dichroic separator providing colored light for a first, second, and third colored channel; (d) wherein each colored channel is similarly constructed and comprises: (i) an illumination relay lens for imaging and directing said colored light in said colored channel towards; (ii) a spatial light modulator for forming a first image thereon; and (iii) an image relay lens for focusing and relaying a real image of said first image towards a dichroic combiner; (e) said dichroic combiner forming a multicolor image by combining said real image from said first colored channel, said real image from said second colored channel, and said real image from said third colored channel; (f) a projection lens for projecting said multicolor image toward said display surface; (g) an interference modulation element located at a plane in an optical path located between said polychromatic light source and said projection lens, or at a plane in the optical path within said projection lens; and (h) a detector for determining the absence of said interference modulation element.
Claim 18
Dependent Claim
222 words
A projector with enhanced security camcorder defeat for projecting a multicolor image onto a display surface comprising: (a) a polychromatic light source; (b) uniformizing means for homogenizing light from said polychromatic light source to provide a uniform illumination field; (c) condenser relay optics for directing said uniform illumination field toward a dichroic separator, said dichroic separator providing colored light for a first, second, and third colored channel; (d) wherein each colored channel is similarly constructed and comprises: (i) an illumination relay lens for imaging and directing said colored light in said colored channel towards; (ii) a spatial light modulator for forming a first image thereon; and (iii) an image relay lens for focusing and relaying a real image of said first image towards a dichroic combiner; (e) said dichroic combiner forming a multicolor image by combining said real image from said first colored channel, said real image from said second colored channel, and said real image from said third colored channel; (f) a projection lens for projecting said multicolor image toward said display surface; (g) an interference modulation element located at a plane in an optical path located between said polychromatic light source and said projection lens, or at a plane in the optical path within said projection lens; and (h) a detector for determining the absence of said interference modulation element.
Claim 19
Dependent Claim
21 words
A projector with enhanced security camcorder defeat as in claim 15 wherein absence of said interference modulation element triggers a response.
Claim 20
Dependent Claim
19 words
A projector with enhanced security camcorder defeat as in claim 16 wherein said response prevents operation of said projector.
Claim 21
Dependent Claim
20 words
A projector with enhanced security camcorder defeat as in claim 16 wherein said response is an audible or visible alarm.
Claim 22
Dependent Claim
21 words
A projector with enhanced security camcorder defeat as in claim 16 wherein said response is a signal to a third party.
Claim 23
Dependent Claim
16 words
A copy protection security system as in claim 15 wherein said detector is an interlock switch.
Claim 24
Dependent Claim
17 words
A copy protection security system as in claim 20 wherein said interlock switch is an electronic interlock.
References Cited (Backward Citations)
US4441791A
Cited
US4836649A
Cited
US5600383A
Cited
US5357289A
Cited
US5584554A
Cited
US5912972A
Cited
US5597222A
Cited
US5808795A
Cited
US6062694A
Cited
US5719695A
Cited
US5535047A
Cited
US5680454A
Cited
US6041158A
Cited
US5798819A
Cited
US5949885A
Cited
US5883959A
Cited
US5918961A
Cited
US5663927A
Cited
US6018374A
Cited
US6031914A
Cited
US6089717A
Cited
US5809139A
Cited
US6069914A
Cited
US5914818A
Cited
US6008951A
Cited
US5875249A
Cited
US5960081A
Cited
US5907437A
Cited
US6247816B1
Cited
US5930050A
Cited
US5959717A
Cited
US6037984A
Cited
US6529600B1
Cited
JP2000295274A
Cited
WO2000074366A2
Cited
US6122103A
Cited
WO2001009676A1
Cited
JP2000214779A
Cited
US6513932B1
Cited
US6809792B1
Cited
US6439725B1
Cited
EP1220538A2
Cited
EP1237369A2
Cited
US20020168069A1
Cited
US7043019B2
Cited
US20050135789A9
Cited
US20040033060A1
Cited
US20050153787A1
Cited
US20040247120A1
Cited
US7006630B2
Cited
US20050036613A1
Cited
US20050078868A1
Cited
US20060029252A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2010-05-21 | 2010-11-20 | 2011-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2014-05-21 | 2014-11-20 | 2015-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2018-05-21 | 2018-11-20 | 2019-05-22 | $7700.00 | Window Closed / Lapsed |