Multifunctional light source assembly and multifunctional desk lamp applying same

A multifunctional desk lamp, comprising:

• a base assembly;
• a lamp head assembly;
• and
• a lamp arm assembly, wherein one end of the lamp arm assembly is connected with the base assembly, and the other end of the lamp arm assembly is connected with and supports the lamp head assembly;
• wherein the lamp head assembly is internally provided with a multifunctional light source assembly, the multifunctional light source assembly comprises an illumination LED chip, a plant grow light LED chip and an ultraviolet LED chip;
• and the light source assembly is controlled to perform one or more functions of illumination, plant growth assistance, and sterilization;
• wherein the lamp head assembly comprises:
• a lamp cover, comprising an accommodating space;
• a heat dissipation part, arranged in the accommodating space for accommodating the light source assembly;
• a cover plate, covering the lamp cover;
• and
• a lens, arranged on the cover plate;
• wherein the cover plate comprises three light-transmitting areas corresponding to the illumination LED chip, the plant grow light LED chip, and the ultraviolet LED chip, respectively;
• wherein the lens arranged on the cover plate is a Fresnel lens;
• the three light-transmitting areas of the cover plate comprise a hollow part for transmission of ultraviolet light, a surface lens for transmission of plant grow light, and the Fresnel lens for transmission of light for illumination.