Laser processing device

A laser processing device comprising:

• a light irradiation section adapted to emit a laser beam from a light source from a tip;
• an optical element including a first transparent member provided via a gap with the tip of the light irradiation section, and a second transparent member;
• and
• a third transparent member filling the gap and adapted to absorb a shock,
• the first transparent member including a first surface opposed to the tip of the light irradiation section, and a second surface provided so as to be connected to the first surface,
• the second transparent member including a flat surface and a convex surface, the flat surface being provided so as to be opposed to the second surface of the first transparent member, the light passed through the first transparent member passing through the convex surface, and
• an optical axis of the laser beam passing through the first surface and an optical axis passing through the convex surface being different from each other.