Optical Filter
Filters selectively transmit optical bands. 觉芯Email offers custom design, R&D and manufacture from UV through visible/NIR to mid-IR, with referenced product/spectral illustrations. Narrowband filters have blocking bands adjacent to both passband edges and serve medicine, laser ranging and gas sensing; wavelength, FWHM, peak transmission, blocking band and depth are customizable. Cutoff filters reject long or short wavelengths, retaining the required range as short-/long-pass filters for IR thermometry, aesthetics, face recognition and police multiband detection; an IR-thermometry example is referenced. Notch filters, also negative/bandstop/bandrejection filters, serve laser protection, Raman, laser-fluorescence analysis and biomedical lasers; a 532nm example is referenced. Linear-variable filters vary spatially, offering wavelength gradients, selectable channels and stable performance for aerospace, field detection, atmosphere/food-safety monitoring, biofluid analysis and multi-/hyper-/ultraspectral imaging.
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