According to a beam control device of the present invention, if an exposure device including a light emitting section is instructed to form an image and a predetermined current is then supplied to an application specific integrated circuit and a main control section, then the main control section outputs an light emitting section on signal. The first unit includes a first synthetic resin formed by molding a pair of magnetic flux collector rings. The device module may be secured to a carrier substrate in a substantially perpendicular orientation relative to the former. Thus, contraction of the film stemming from hydrolysis is inhibited, and a sturdy mesoporous silica thin film which takes the self-assembly of the surfactant as a mold is obtained while cavities are maintained intact without being fractured.