Dimethicone copolyol sulfosuccinate surfactant compounds having low-odor characteriztics are disclosed. These are arranged so that in use light exits the apparatus beneath the surface of the water and is reflected by said material before re-entering the apparatus beneath the surface of the water and entering the hyperspectral imager. Such diseases andor conditions include, but are not limited to, acne, seborrhea, seborrheic dermatitis, cancer, and inflammatory diseases. A valve comprises an outer ring and a sealing sleeve of flexible material mounted to the ring and extending into the opening defined by the ring to terminate in a substantially centrally disposed inlet opening. The stem is shaped to conform to the palatal surface of the patient. Wherein an intermediate layer having the heat ray shielding performance is obtained by being cured by irradiation of ultraviolet ray, after a dispersion of composite tungsten oxide particles is dissolved into an ultraviolet ray curing resin precursor and thereafter is filled in a gap between the opposed two plate glasses.