Invention Grant
US5808816A Slat for a shutter with a lens 失效
用于带镜头的快门的板条

Slat for a shutter with a lens
Abstract:
A slat for a shutter includes an elongated slat body with a longitudinal slot unit formed therethrough, and an elongated lens fixed within the slot unit so as to close the slot unit and so as to permit light from one side of the shutter to reach the other side of the utter via the slot unit and the lens.
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