| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method capable of firmly welding different kinds of resin members to each other.SOLUTION: In laser welding of a first resin member (a lens) 10 made of a light-transmitting resin and a second resin member (a housing) 20 made of a light-absorbing resin and having a lower melt temperature than that of the first resin member, an unmelted part 10 of the first resin member 10 sinks into a melted part 24c of the second resin member 20 and the melted part 24c of the second resin member 20 infiltrates into a threaded hole 13 formed in the first resin member 10, and the bonding strength of the welding of the first and second resin members 10, 20 is increased by the resulting anchor effect.</p> |
