Screen

Optical: systems and elements – Projection screen – With reflector or additional screen

Reexamination Certificate

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Reexamination Certificate

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07139123

ABSTRACT:
A screen with an improved luminance uniformity is provided. A diffusion film that is disposed at the front surface of the screen is attached to a Fresnel lens with an adhesive. The Fresnel lens is attached to a reflective layer that is deposited on a base film with an adhesive that has a refractive index lower than that of the Fresnel lens and as low as possible.

REFERENCES:
patent: 3893748 (1975-07-01), De Palma et al.
patent: 4108540 (1978-08-01), Anderson et al.
patent: 5096278 (1992-03-01), Yoshioka et al.
patent: 5161880 (1992-11-01), Azuma
patent: 5402263 (1995-03-01), Kita et al.
patent: 6023369 (2000-02-01), Goto
patent: 6894835 (2005-05-01), Ohsako et al.
patent: 10-142699 (1998-05-01), None
patent: 2000-162710 (2000-06-01), None

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