Lens plate for illumination lamp, and illumination lamp

摘要

A lens plate and an illumination lamp which are not affected by heat from a light source even if the lens plate is small. The lens plate for an illumination lamp has the lens part covering the light source, and the lens part is formed in such a way that a concentric lens pattern is separately formed on an outer central part and an inner peripheral part so as not to be overlapped.

主权项

1. A lens plate for an illumination lamp having a lens part covering a light source, wherein the lens part is formed in such a way that concentric lens patterns are separately formed on an outer face in a center part and an inner face in a peripheral part so as not to be overlapped in a plan view, wherein the outer face in the center part is formed in a shape of a dome protruding outside and the inner face of the center part is formed in such a manner that the inner face of the center part is concave so as to become distant from the light source.