Abstract: Disclosed herein is a built-in type antenna assembly of a wireless communication terminal. The antenna assembly comprises a board, a case mounted on the board and having at least one disposing part formed through the case such that a portion of an upper surface of the board is exposed through the disposing part, an antenna member mounted on the case to radiate electrical signals from the board to the outside while receiving external signals, and a resilient part disposed within the disposing part to provide resilient force for maintaining contacts between an upper end thereof and the antenna member and between a lower end thereof and the board to electrically connect the board and the antenna member. The antenna assembly has a constant path of electrical signals and electric waves, providing uniform performance, and is reduced in the number of components, thereby reducing manufacturing costs while enhancing assembly efficiency.

Abstract: The present invention relates, in general, to a scanning apparatus using a diffractive light modulator and, more particularly, to a scanning apparatus, which turns on or off a laser diode, used as a light source, in synchronization with the operating frequency of a diffractive light modulator used in a laser printer, projector, etc., thus eliminating distortion of light spots formed on a scanning object. The diffractive scanning apparatus of the present invention includes a light generation processing means, a light modulation processing means, and a scanning means.

Abstract: The present invention relates to a scanning apparatus for a laser printer. More particularly, the present invention relates to a scanning apparatus, which is formed to allow a light modulator to be non-perpendicular to the shaft of a photosensitive drum, which is a scanning object, thus performing scanning at a higher resolution and speed within the allowable limits of other devices. The scanning apparatus of the present invention includes an optical means, a rotating mirror, a conversion means, and a drum-shaped scanning object.

Abstract: The present invention relates, in general, to an optical system for a color laser printer and, more particularly, to an optical system for a color laser printer, in which a small number of laser scanning units are shared and collectively used by color components in the color laser printer, so that the number of required laser scanning units is reduced, thus reducing production costs. The optical system of the present invention includes a laser scanning unit for generating light and scanning a plurality of light beams. A plurality of conversion means converts the plurality of light beams into light beams having respective constant linear velocities, the respective conversion means corresponding to the light beams. A plurality of light receiving units receives the light beams from the conversion means, respectively, the respective light receiving units corresponding to the light beams.