Fresnel Rhomb Prism from Mexico
A 45-90-45 degree prism using total internal reflections to convert linear polarization to circular polarization. Classified under HTS 9001.90.50.00 as an unmounted optical element for polarization state control in laser systems. Provides broadband quarter-wave phase retardation through double internal reflections.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Specify acceptance angle and wavelength range for polarization conversion efficiency
• Document surface quality critical for maintaining internal reflection efficiency
• Include material dispersion data for achromatic performance verification