| 摘要 |
<p>PURPOSE: An optical filter is provided to implement at least one non-stretching protection polyamid layer which is cast from an optical effective layer and a liquid. CONSTITUTION: An optical filter comprises more than one effective layer and a protective layer on the both sides of the optical filter. The protective layers are non-stretched protection polyamid layers. The non-stretched protection polyamid layer is cast from more than one liquid. The protection polyamid layers is comprised of a PA MACMI / 12 and arbitrary additives.</p> |
