Achromatic Six-Segmented Waveplate — AHWP25-VIS-A-6P-M

Achromatic Six-Segmented Waveplate — Model AHWP25-VIS-A-6P-M

Broadband six-segmented λ/2 waveplate for 400-700 nm, SM1 mounted.

Overview

LBTek's Achromatic Six-Segmented Waveplate is made of an N-BK7 glass substrate and Liquid Crystal Polymer (LCP) material, designed by combining three layers of liquid crystal true zero-order six-segmented waveplates at specific angles. The clear aperture is divided into six 60° angular segments, each with a uniformly aligned LCP fast-axis. The orientations alternate to produce spatially-varying half-wave retardance across the broadband VIS range (400-700 nm). Mounted in a standard SM1 lens tube (SM1-8A-SP with a D-type step) marked with segment orientation.

Key Features

• Achromatic broadband design: λ/2 retardance across 400-700 nm
• Six 60° angular segments with alternating fast-axis orientations
• Three layers of liquid crystal polymer film on N-BK7 substrates
• Retardance accuracy: ±λ/25 @400-420 nm & 650-700 nm; ±λ/50 @420-650 nm
• Adjacent area gap: < 150 μm
• Transmittance > 70% (400-430 nm), > 85% (430-520 nm), > 96% (520-700 nm)
• Mounted in an SM1-8A-SP housing with a D-type step

Applications

• Structured illumination microscopy
• Modulation of the polarization state of structured light
• Different polarization state transformations for incident light in various segments
• Structured illumination microscopes based on the digital micro-mirror device (DMD)