LIGHT FILTER AND LUMINAIRE

摘要

PROBLEM TO BE SOLVED: To provide a light filter and a luminaire for preventing incoming of flying insects and hardly affecting color tones.

SOLUTION: The light filter 10 and the luminaire 20 are configured such that in light rays emitted from a light source, light of a wavelength ranging from about 300 nm to about 380 nm is shut off almost 100%, the transmittance of light of a wavelength of about 395 nm is set to a value ranging from about 20% to about 50% or less, the transmittance of light of a wavelength ranging from about 400 nm to about 410 nm is set to a value ranging from about 30% to about 60% or less and set higher than that of the about 395 nm wavelength light and the transmittance of light of a wavelength of about 420 mn is set to about 40% or more and set higher than that of the light of the wavelength ranging from about 400 nm to about 410 nm.

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