Abstract: An enhanced wavelength-converting structure is disclosed. The enhanced wavelength-converting structure includes a substrate, a wavelength-converting layer arranged next to the substrate, and a wavelength-selective reflecting layer arranged next to the wavelength-converting layer. The wavelength-converting layer converts the first light into the second light. A part of the second light radiating backward to the light source is further reflected toward the substrate by the wavelength-selective reflecting layer to form the enhanced second light by combining with another part of the second light radiating toward the substrate.

Abstract: An enhanced wavelength-converting structure is disclosed. The enhanced wavelength-converting structure includes a substrate, a wavelength-converting layer arranged next to the substrate, and a wavelength-selective reflecting layer arranged next to the wavelength-converting layer. The wavelength-converting layer converts the first light into the second light. A part of the second light radiating backward to the light source is further reflected toward the substrate by the wavelength-selective reflecting layer to form the enhanced second light by combining with another part of the second light radiating toward the substrate.

Abstract: The white LED module includes a packaging housing having a containing chamber, an LED chipset disposed in the containing chamber, and a shared flat wavelength-converting structure disposed on the packaging housing. The LED chipset could illuminate an original light with at least two wavelengths. The original light may be diffused with the shared flat wavelength-converting structure and may be partially converted into a converted light with the shared flat wavelength-converting structure. The converted light and the original light are mixed to form a white light.

Abstract: A wavelength converting structure is provided. The wavelength converting structure comprises the following: a substrate, and a wavelength converting coating which is deposited on the substrate and comprises: (a) a phosphor powder which can be excited by UVC; and (b) an anti-UVC adhesive, wherein the thickness of the wavelength converting coating is 2 to 10 times the average particle size of the phosphor powder and the amount of the phosphor powder in the wavelength converting coating conforms to at least one of the following requirements: (i) the phosphor powder should be about 30% to 85% by volume of the wavelength converting coating based on the total volume of the phosphor powder and the adhesive; and (ii) the weight ratio of the phosphor powder to the adhesive should range from 1:1 to 20:1. The wavelength converting coating can effectively convert UVC to visible light to provide a visible light source with a high surface area.