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Projection lens for lighting equipment and lighting equipment using projection lens for lighting equipment
Projection lens for lighting equipment and lighting equipment using projection lens for lighting equipment
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机译:用于照明设备的投影透镜和使用用于照明设备的投影透镜的照明设备
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摘要
A projection lens for lighting equipment of an aspect of the present invention is characterized by formed in a shape where N of sector-shaped lens parts each of which corresponds to a central angle 2 degrees (=180/N, N is an integer more than or equal to 3) and is bilaterally symmetric in a rotationally asymmetric elliptical collimator lens are circumferentially disposed. The projection lens for lighting equipment of such aspect is formed in the shape where N of the sector-shaped lens parts each of which corresponds to a central angle 2 degrees (=180/N, N is an integer more than or equal to 3) and is bilaterally symmetric in the rotationally asymmetric elliptical collimator lens are circumferentially disposed. Accordingly, the projection lens for lighting equipment with a novel design which has a shape of a N-sided polygon (e.g. quadrilateral) in planar view or a shape similar to the N-sided polygon and has common edges (N edges) formed on a surface without impairment in function as a collimator lens can be configured.
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