A Light box for optical module test is disclosed. The light box is
designed to have at least a light source, a beam splitting unit, an
optical filtering module and two optical fibers. The optical filtering
module is formed with a plurality of filters and arranged between the
light source and the beam splitting unit to generate a variety of color
temperatures of the light beam from the light source before the light
beam enters the beam splitting unit. Thereafter, the light beam is
uniformly divided by the beam splitting unit into a first light beam and
a second light beam which are transmitted via the optical fibers,
respectively, and projected onto a test chart.