| 摘要 |
PURPOSE: An LED light radiator is provided to radiate the light with high luminous intensity to an object uniformly and increase the degree of freedom in a design. CONSTITUTION: An LED light radiator includes a light emitting device(21) and a transmissive light guide unit(30). The transmissive light guide unit is comprised of a central convex lens(41), a first cylindrical light guide part(51), and a second cylindrical light guide part(61). An air layer is formed between an outer circumference of the first cylindrical light guide part and an inner circumference of the second cylindrical light guide unit. The outer circumferences of the first and second cylindrical light wave units have the second curved surface with the same focus. The light from the light emitting device is reflected to a light radiation direction along the optical axis of the transmissive light guide unit by the second curved surface. The first cylindrical light guide part is formed in the outer circumference of the central convex lens. The second cylindrical light guide part is formed in the outer circumference of the first cylindrical light guide part. |
