| 摘要 |
PROBLEM TO BE SOLVED: To obtain an LED lamp in which the luminance on the light emitting face of a lamp implement for a vehicle using the LED lamp as a light source is made uniform, whose visibility is enhanced, which can exclude a sense of incongruity, and whose performance and sense of beauty are enhanced. SOLUTION: A first optical means 3 in which at least one out of a concave mirror 31 and a dome-shaped lens 32a is installed and by which a proper angle of irradiation α is given to light from an LED chip 2, and a second lens-shaped optical means 5 which is installed in a position used to receive light from the first optical means 3 via an air layer 4, compose an LED lamp 1. In the LED lamp 1, at least a face, on one side, of the second optical means 5 is formed as a lens cut face 5b. As a result, a light receiving area can be expanded, a tendency that the luminance on the center line of the LED lamp 1 is high is relaxed, and the luminance on the light emitting face of a lamp implement for a vehicle using the LED lamp 1 as a light source can be made uniform. |
