1, With a cylindrical parabolic mirror collection sunlight lit the torch.

2, The reflector adopts parabolic mirror with chromium - plated finish, high reflectivity and even illuminance in illuminated surface.

3, The quantative test of lightweight 630 quartz parabolic mirror has firstly been implemented with this method.

4, She uses a parabolic mirror to focus light rays from the sun.

5, Sunlight comes into the fibre - optic cables through holes in the parabolic mirror.