Rear projection type display system

Details Rear projection type display system Rear projection type display system

1996-12-05

1999-02-09

Malley, Daniel P.

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

359455, G03B 2160

Patent

active

058702253

ABSTRACT:
A rear projection type display system with a transmissive screen. A transparent reinforcing plate is coupled to a lenticular sheet of the screen on the light output side by a connective member to broaden the horizontal diverging angle by 60 degrees or more to the right and left sides. The duty factor of a black stripe formed on the lenticular sheet is set to 60% or more so improve the contrast of an image. The diverging angle at each point of a vertically-diffusing lens for diverging light in the vertical direction is modulated in accordance with the height of each point to offer a proper visual angle range in the vertical direction.

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patent: 4961642 (1990-10-01), Ogino et al.
patent: 5296922 (1994-03-01), Mitani et al.
patent: 5400114 (1995-03-01), Yoshida et al.
patent: 5485308 (1996-01-01), Hirata et al.
patent: 5513036 (1996-04-01), Watanabe et al.
patent: 5513037 (1996-04-01), Yoshida et al.

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