| 摘要 |
<p>The present invention enables a line beam generation device to be easily produced and causes the line beam generation device to be more compact than conventional line beam generation devices. The front end surface of a GRIN lens having a circular cross section is an inclined surface that is inclined with respect to the axial line thereof, and an optical fiber is connected to the connection surface of the back end surface thereof. Laser light propagated within the core of an optical fiber enters within the line beam generation device through the connection surface, is reflected at the inclined surface, and exits as a line beam. The exiting line beam for the most part does not broaden when viewed laterally, and when viewed head-on, broadens at a relatively large angle by means of the lens effect of the outer perimeter being circular.</p> |
