| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an LED printing head which is made compact and light- weight and has the yield of LEDs improved and in which correcting irregularities, changing a size and a shape and taking countermeasures against noise are facilitated. SOLUTION: A SELFOC lens and an optical waveguide element 10 having an emission waveguide facing the SELFOC lens are set integrally. An optical connector 11 is mounted to the entrance side of the optical waveguide element 10, so that light to be emitted from the SELFOC lens can be brought in from an opposite end of an optical fiber 12 connected to the optical connector 11.</p> |
