Provided is a backlight device that includes: a light guide panel having a diffraction pattern for emitting light through an emission surface of the light guide panel by diffracting light entering the light guide panel; and a chromatic dispersion compensation member that is an optical transmitting member located on a light emission side of the light guide panel and has a lattice pattern having a depth in a direction vertical to the emission surface of the light guide panel.

 
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< Backlight module

> Portable display device

> Line illumination device and image input apparatus using the same

~ 00578