Typical fluorescence filter sets are mainly used in fluorescence microscopes and are divided into 6 bands and 12 groups of fluorescence filters.   Fluorescent filter produced by HB Optical is manufactured by IAD process, with good spectral performance and long service life. Apply these filters to obtain high-contrast, clear, and realistic high-quality images. Product features: high transmittance (T>90%), deep cut-off background (>OD6), high signal-to-noise ratio, high accuracy (wavefront distortion <0.25λ). A newer filter product, high-contrast rectangular bandpass filter and sharp cut-off broadband filter, the background cut-off depth is increased to 10-6, the background is darker, the contrast is better, and the image is brighter and clearer .