| 摘要 |
PROBLEM TO BE SOLVED: To allow the formation of a mark without impeding the appearance of a light fixture for a car with a mark formed on an inner surface of a front lens made of synthetic resin. SOLUTION: Four marks M1, M2, M3, M4 are formed as a concave groove 28 on an inner surface of a front lens by irradiating a laser beam along the shape of the marks. This makes it possible to easily address even a case where a mark showing a different content needs to be formed in the same position in a front lens 12 according to the direction of a light fixture, as a light fixture certification mark M1, by properly control laser irradiation. Further, this prevents the profile of a bushing appearing on the inner surface of the front lens, as in a prior art example coping with a change of an indicated content of a mark with a bushing. In addition, each of the marks M2, M3, M4 other than the light fixture certification mark M1 is also made to look the same by forming each of the mark through laser irradiation. |
