发明申请
US20080310166A1 Toroidal Lens 审中-公开
环形透镜

Toroidal Lens
摘要:
A lens, suitable for automotive applications, for use with a light source is provided. The lens has a main body defining a cross sectional shape with a curved side and a straight side. The main body is formed by rotating the cross sectional shape about an axis of revolution located outside the main body. The axis of revolution is parallel to the straight side of the cross section and passes through a focal point defined by the curved side.
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