In certain embodiments, a device for optical coherence tomography includes a signal detection device and a computer arrangement. The polyurethane prepolymer adhesives exhibit surprisingly good adhesion to plastics such as fiberglass reinforced plastics. The present invention further relates to the use of this compound or a pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof in the manufacturing of a medicament for treating the disease caused by abnormally over-expressing c-Met kinase, in particular, for treating or preventing cancer. Then, the stepping motor is driven to move the focus lens by a movement amount corresponding to a detected range of the cord plate.