Optical: systems and elements – Mirror – With support
Reexamination Certificate
2001-06-27
2003-04-29
Sikder, Mohammad (Department: 2872)
Optical: systems and elements
Mirror
With support
C359S884000, C359S847000, C359S846000
Reexamination Certificate
active
06554438
ABSTRACT:
SUMMARY OF THE INVENTION
In accordance with the present invention, a composite laminate mirror is provided. The mirror includes a rigid substrate and a reflective sheet laminated to the rigid substrate.
In accordance with one aspect of the invention, the rigid substrate is a glass substrate.
In accordance with another aspect of the invention, the reflective sheet is a flexible plastic sheet. The reflective sheet may have a multilayer construction that includes a metallic film such as Mylar™, for example.
In accordance with another aspect of the invention, the reflective sheet includes a second substrate and at least one thin film layer deposited on the substrate. The second substrate may be a metallic sheet such as a rolled metal sheet. Alternatively, the second substrate may be a plastic sheet.
In accordance with yet another aspect of the invention, the thin film layer includes a silver layer.
In accordance with another aspect of the invention, a thin film silicon dioxide layer is deposited on the substrate. Additionally, a passivating layer such as silicon nitride may be deposited on the silicon dioxide layer. A thin film silver layer may be deposited over the passivating layer.
The present invention also provides a video projection device that includes a cabinet having front and rear sections and a projection tube for projecting a video image. The video projection device also includes a screen located in the front section of the cabinet. The screen has a first surface onto which the video image is projected and a second surface for displaying the video image so that it is observable by a viewer. A mirror is arranged in the cabinet for reflecting light to the first surface of the screen. The mirror is a composite laminate mirror that includes a rigid substrate and a reflective sheet laminated to the rigid substrate.
REFERENCES:
patent: 4963012 (1990-10-01), Tracy et al.
patent: 5124858 (1992-06-01), Goetz
patent: 5222000 (1993-06-01), Adler
patent: 5464693 (1995-11-01), Ono et al.
patent: 5790298 (1998-08-01), Tonar
patent: 5798881 (1998-08-01), Mazurek et al.
patent: 6078425 (2000-06-01), Wolfe et al.
patent: 6086210 (2000-07-01), Krisko et al.
Ishii Fusao
Marcanio Joseph A.
Mayer Fortkort & Williams PC
Mayer, Esq. Stuart H.
Sikder Mohammad
Sony Corporation
Williams Esq. Karin L.
LandOfFree
High performance, low cost mirror for a rear projection... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High performance, low cost mirror for a rear projection..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High performance, low cost mirror for a rear projection... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3094300