| 摘要 |
To provide a rear projection system, which offers a high transparency and a high efficiency of projection, a rear projection system is proposed, comprising: a projector (18), and a projection screen (16) being switchable between a transparent mode and a diffractive mode, wherein the projector (18) is located with respect to the projection screen (16) such that light from the projector (18) is incident at an inclined angle at the rear side of the projection screen (16), the projection screen (16) is adapted to deflect in its diffractive mode the incident light into a limited angle range with respect to the front surface normal of the screen (16).
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