| abstract |
A surface-emitting device capable of emitting ultraviolet light mainly for exciting a photocatalyst by utilizing the characteristics of a backlight. Furthermore, a compact and thin surface emitting device that functions as a filter that allows fluid to pass through by utilizing the characteristics of the backlight is provided. A light source and a light guide plate having the light source disposed on a side surface, and at least one of a front surface or a back surface of the light guide plate is a light emitting surface that emits light from the light source, and the light emitting surface of the light guide plate A surface emitting device in which a surface other than the side surface on which the light source is disposed is formed as a light shielding surface, and emits light having a peak wavelength of 388 nm or less, or the light guide plate is formed as a porous body. . The light guide plate may have a plurality of through holes, and a surface light emitting device in which a surface on which the through holes are formed is a light emitting surface. [Selection] Figure 4 |