Method for manufacturing rear-projection type screen having sheets with protrusions integrally formed thereon

To provide a rear-projection type screen in which, without the need for a tape-attachment operation on the outer circumferential part of the lens sheets, the top of the Fresnel lens can be prevented from being pared by the abrasion caused by the vibration during transportation. A rear-projection typ...

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Main Authors Ikari, Tokuo, Matsuzaki, Ichiro
Format Patent
LanguageEnglish
Published 23.05.2006
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Abstract To provide a rear-projection type screen in which, without the need for a tape-attachment operation on the outer circumferential part of the lens sheets, the top of the Fresnel lens can be prevented from being pared by the abrasion caused by the vibration during transportation. A rear-projection type screen according to the present invention is configured from two or more overlapping sheet-like members such as a Lenticular lens sheet and Fresnel lens sheet , in which a fixing protrusion is integrally formed in the sheet-like members in such way that neither of the two sheet-like members is displaced from the state in which the two sheet-like members overlap. A protrusion, used to attach the rear-projection type screen to the main body of a rear-projection-type image display apparatus or the screen frame, may be integrally formed in the sheet-like members from which the rear-projection type screen is configured. In addition, a protrusion, which produces a gap between the top of a lens in one of the sheet-like members and the other sheet-like member in a state in which the two sheet-like members overlap, may be integrally formed in the sheet-like members.
AbstractList To provide a rear-projection type screen in which, without the need for a tape-attachment operation on the outer circumferential part of the lens sheets, the top of the Fresnel lens can be prevented from being pared by the abrasion caused by the vibration during transportation. A rear-projection type screen according to the present invention is configured from two or more overlapping sheet-like members such as a Lenticular lens sheet and Fresnel lens sheet , in which a fixing protrusion is integrally formed in the sheet-like members in such way that neither of the two sheet-like members is displaced from the state in which the two sheet-like members overlap. A protrusion, used to attach the rear-projection type screen to the main body of a rear-projection-type image display apparatus or the screen frame, may be integrally formed in the sheet-like members from which the rear-projection type screen is configured. In addition, a protrusion, which produces a gap between the top of a lens in one of the sheet-like members and the other sheet-like member in a state in which the two sheet-like members overlap, may be integrally formed in the sheet-like members.
Author Matsuzaki, Ichiro
Ikari, Tokuo
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References Nakanishi (5803567) 19980900
Bordignon (4456344) 19840600
Park (6275334) 20010800
Fujii et al. (6645793) 20031100
Aoki et al. (5831585) 19981100
(06038151) 19940200
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Hennen et al. (6407859) 20020600
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Sasa et al. (6068906) 20000500
Moshrefzadeh et al. (6317263) 20011100
(1-97327) 19990600
(1-142901) 19890900
Hori (6348993) 20020200
Martinez (4984871) 19910100
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Title Method for manufacturing rear-projection type screen having sheets with protrusions integrally formed thereon
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