749nm Short-Pass Dichroic Filter

This product is a high-performance short-pass dichroic filter with a cut-off edge wavelength of 749 nm, primarily designed for fluorescence imaging, image-splitting, and spectral separation of visible and near-infrared light. The filter offers excellent transmission over the 400-730 nm band with an average transmittance Tavg > 93%, and provides high reflection over the 770-1100 nm band, thereby directing spectral signals on either side of the cut-off wavelength into different optical paths. Designed for a 45°angle of incidence and featuring optical performance controlled for image-splitting applications, it achieves efficient spectral separation while minimizing reflected wavefront distortion that could affect imaging quality. It is suitable for fluorescence microscopy, multi-channel imaging, machine vision, and research optical systems.