Lighting apparatus and selecting method for selecting hue of toner in medium layer thereof

摘要

A lighting apparatus (1) having a light source (11) and at least a medium layer (12) is provided. The light source (11) emits a first light beam (13) with a first main wavelength (W1) and a second main wavelength (W2), wherein the first main wavelength (W1) is less than the second main wavelength (W2). The medium layer (12) is allocated corresponding to the light source (11). The medium layer (12) has a transmittance not less than 60% and a toner mixed therein. After the first light beam (13) passes through the medium layer (12), a peak attenuation of the first main wavelength (W1) is larger than that of the second main wavelength (W2).