US Patent 11125934 Optical member and light guide system

There is provided an optical member and a light guide system each of which is capable of further thinning, and is achieved to emit light having high brightness and excellent in color reproducibility and uniformity. An optical member of the present invention includes: a light guide plate having a first main surface and a second main surface; a wavelength conversion layer, which is arranged near one end portion of the first main surface of the light guide plate, and is configured to convert a wavelength of light in an ultraviolet to blue region entering the wavelength conversion layer from an opposite side to the light guide plate, to thereby guide the light to the light guide plate; and a first reflective plate arranged on a side surface of the light guide plate on a side where the wavelength conversion layer is arranged.