METHOD AND APPARATUS FOR MAKING HIGH REFRACTIVE INDEX (HRI) FILM

摘要

The invention includes an apparatus (10) for heating a deposition material to form a vapor that may be deposited on a polymer film (18) and thereby create a holographic film or similar material. A system and a method for producing such a film is also provided. Included within this system is a vaporizer (22) that has an adjustable aperture (32). By adjusting the size of the aperture, the flow rate of the vapor from the vaporizer can be adjusted to achieve a desired flow rate. A heat source (20) in thermal communication with the vaporizer may also be employed in the system to heat the deposition material to form a vapor. The vaporizer may be disposed within a vacuum chamber (12), which has a feed roll (14) and a take up roll (16). As the film is transferred from the feed roll to the take up roll, the vapor is deposited on the film. With the vaporizer of this invention, feed rates of about 1,500 fpm have been achieved.