| 摘要 |
<p>The present invention provides an optical path coupling device. The device includes a light beam collimating element (121) and a light beam concentrating element (122). The light beam collimating element includes a first focus (1213), a first optical axis (1212) and a light concentrating surface (1211); the light concentrating surface receives incident light emitted from a position of a first focus and collimates the incident light into collimated light beams (150) which are transmitted along the first optical axis. The light beam concentrating element (122) includes a second focus (1223), a second optical axis (1222) and a reflective concave surface (1221); the second optical axis is disposed in parallel with and at a preset distance away from the first optical axis; the reflective concave surface (1221) is disposed obliquely relative to the first optical axis, and the reflective concave surface receives the collimated light beams and reflects and concentrates the collimated light beams to a position of the second focus.</p> |
