| 摘要 |
PROBLEM TO BE SOLVED: To set light distribution characteristics of the whole LED module according to the purpose of use without making the depth of cup and the radius of curvature of a lens different, and further to easily adjust the light distribution characteristics. SOLUTION: In cups 2 which are formed in a metallic substrate 1 to the same depth, LED chips 3 and 4 are mounted, and the surfaces of the LED chips 3 and 4 are covered with a lens 5 to constitute the LED module; and the some LED chips 3 are set larger in the distance from the cup bottom surface of a light emission part than other LED chips 4. |
