| 摘要 |
The device has an optical energy source(29) of long dimension, a reflector(26) for focusing of the light transmitted by the energy source, a transparent window(36) movable against the film to be sealed, and a back support(11) movable against the film and against which is pressed the window. The optical energy source is a pulsed light source of high intensity, especially an electric discharge lamp such as a xenon flashbulb. |
