An optical element having a front side and a back side operates in an
ambient lit mode and a backlit mode. The optical element includes a
diffusely reflecting layer facing the front side for reflecting ambient
light. A light absorbing layer faces the back side and is positioned to
prevent back light from illuminating the diffusely reflecting layer. A
plurality of light transmitting regions extend through the light
absorbing layer and the diffusely reflecting layer for permitting back
light to pass through in a restricted angular range without illuminating
the diffusely reflecting layer.