Abstract: A sterilizing device comprises a light guiding member and an ultraviolet (UV) light source. The light guiding member has a surface. The UV light source emits UV light rays such that the UV light rays are guided into the guiding member based on a total internal reflection. When an object contacts or comes close to the surface, an evanescent wave from the UV light rays irradiates on the object.

Abstract: A measurement system having a light source, a holding device, and a measurement device. The light source includes a plurality of light emitting diodes (LEDs) configured to generate light beams with different wavelengths, and the emission spectrum of the light source complies with a predetermined standard. The holding device is configured to hold an object under test. The measurement device is configured to measure the electrical properties of the object under test after the object under test is illuminated by the light source.

Abstract: A hazard warning device for vehicles is provided, including a light source unit, a light guiding unit, a warning structure unit and a control unit. The light source unit generates a light source for warning. The light guiding unit guides the light source to become a surface light source having an area. The warning structure unit scatters or reflects the surface light source and displays a warning. The control unit is the element for controlling the on and off of the light source unit. When the control unit receives an activation signal from a vehicle, the control unit activates the light source unit and displays a warning on a surface area of the vehicle through the light guiding unit and the warning structure unit.

Abstract: A sterilizing device comprises a light guiding member and an ultraviolet (UV) light source. The light guiding member has a surface. The UV light source emits UV light rays such that the UV light rays are guided into the guiding member based on a total internal reflection. When an object contacts or comes close to the surface, an evanescent wave from the UV light rays irradiates on the object.

Abstract: A measurement system having a light source, a holding device, and a measurement device. The light source includes a plurality of light emitting diodes (LEDs) configured to generate light beams with different wavelengths, and the emission spectrum of the light source complies with a predetermined standard. The holding device is configured to hold an object under test. The measurement device is configured to measure the electrical properties of the object under test after the object under test is illuminated by the light source.