Patent ID: 10942456

Abstract:
An ultraviolet (UV) light source is provided. The device uses a high-uniformity diode array. A lens unit of collimated illumination lenses is used. A light source of UV light-emitting diode (UVLED) array is formed and passes through the lens unit to uniformly distribute the light source and obtain a collimated light. The present invention comprises a light source of UVLED array; a collimated illumination lens unit; and a substrate. The construction is simple. The present invention can be applied in the lithography of a semiconductor. The lithography forms contact lines of widths not greater than 3 microns (μm); soft-contact lines of widths of 3˜30 μm; and short-spaced lines of widths of 30˜200 μm. The present invention avoids the mask from contact wear-out for multiple uses, and further reduces the replacement rate.