Match the filter to your source wavelength and package height. For 810 nm, OPTOStokes offers BP810 with CWL 810 ± 3 nm, 20 ± 3 nm FWHM, 808–815 nm transmission >90%, 350–1100 nm blocking <1%, and a very thin 0.7 mm substrate. For 905 nm, the BP905 gives CWL 905 ± 2 nm, 26 ± 3 nm FWHM, 900–910 nm transmission >90%, and 350–1100 nm blocking <1%. For 940 nm, the BP940 gives CWL 940 ± 2 nm, 25 ± 2 nm FWHM, 935–945 nm transmission >90%, 350–1100 nm blocking <1%, and a 0.8 mm thin profile. Choose BP810 when thickness drives the design, BP905 for 905 nm rangefinding and sensing, and BP940 for 940 nm ToF, facial recognition, wearables, or stacked OEM modules. OPTOStokes lists custom geometry, CWL/FWHM tuning, and rapid shipment for these NIR optical filters.