| 摘要 |
<p>PURPOSE:To provide a light waveguide window glass plate of a vehicle or the like, which can remove and prevent clouding on a glass plate by converting light energy to thermal energy. CONSTITUTION:A window glass 1 is formed in layers by a glass substrate 2, a core layer 3 and a clad layer 4, and light is introduced from a light source 6 into the core layer 3. Some of waveguide light in the core layer 3 can be introduced into the clad layer 4, and in the clad layer 4, the waveguide light is attenuated to be converted to thermal energy. The temperature of the clad layer 4 is raised by the above thermal energy to remove fogging.</p> |
