LBTEK's near-infrared non-polarizing plate beamsplitters use infrared fused quartz as the substrate material, achieving beam splitting by coating a near-infrared broadband dielectric beam-splitting film on the surface. The arrow on the side of the product points to the coated beam-splitting surface. When the light beam is incident on the beam-splitting film at a 45-degree angle, efficient 50:50 beam splitting can be achieved. The back of the product is also coated with an anti-reflection film, which effectively reduces reflection and prevents ghosting. Additionally, the circular near-infrared plate beam splitter is designed with a 30′ wedge angle to further minimize ghost images and interference effects. The beam-splitting ratio accuracy is sensitive to the polarization state of the incident light; please refer to the curve page for specific details.