Abstract: A light emitting diode array head which focuses light on a screen such as a photoconductive drum. A plurality of LED chips each containing a row of LEDs emits light to a corresponding lens. The lenses correspond to the LED chips on a one-to-one basis and each of the lenses may be joined to form a unitary device. There are shields separating light from each LED chip from neighboring lenses. The LED chips and lenses prevent dispersion of the quality of light at the connecting portions of the lenses and obtain uniform beam shapes. To obtain uniform light patterns, the lenses are corrected for spherical aberrations and the LEDs of each LED chip are arranged to face a center of a corresponding lens.