LIGHTING DEVICE AND LIGHTING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a lighting device capable of realizing an excellent decoration effect by projecting illumination light of desired pattern in a suitable configuration on an irradiation surface.

SOLUTION: The lighting device 1 has a shading mask 24 with an aperture 24a corresponding to a desired pattern opened near the front focus of a projection lens 23 installed between a collimation lens 22 to convert emitting light from an LED 12 into parallel light and the projection lens 23 which projects the light converted into parallel light by the collimation lens 22 on an irradiation surface 50. The opening shape of the aperture 24a of the shading mask 24 is corrected at least corresponding to inclination of the optical axis to the irradiation surface 50 at the time of installing the lighting device 1. Thereby, the illumination light of a desired pattern is projected on the irradiation surface 50 in a suitable configuration without distortion, and an excellent decoration effect by the illumination light is realized. At that time, it is desirable that the opening shape of the aperture 24a is corrected taking into considerations the curvature of the projection lens 23.

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