The LBTEK Liquid Crystal Optical Switch (LCOS) is based on a 90° TN-aligned liquid crystal cell and thin-film linear polarizers, mounted in a mechanical housing with attached wiring. By applying an AC voltage to the nematic liquid crystal filled in the TN cell, it achieves 90°/0° optical rotation switching. Combined with orthogonal polarizers, it provides beam switching control, offering fast, vibration-free beam switching for optical paths. When no voltage is applied, the LBTEK LCOS rotates the polarization state of incident light by 90°, achieving the optical "on" state. When a 15 V voltage is applied, the liquid crystal molecules reorient to remain the polarization state of the incident light unchanged, resulting in the optical "off" state. The LBTEK LCOS features a high-speed switching response of <5 ms and an average switching contrast ratio >5000:1 across its operating wavelength range. It is suitable for applications such as camera shutters, machine vision, and 3D displays. LBTEK offers standard LCOS products with operating wavelengths of 400-700 nm, while also supporting flexible customization of parameters to meet diverse application needs. A matching voltage controller, LCVRC-2K25, is available for selection. For details, please consult LBTEK Technical Support.