Profile: Headwall Photonics, Inc. designs and manufactures advanced optical solutions that manage wavelengths for customers requiring application-specific performance. We offer precision spectral modules and original holographic diffraction gratings. We offer hyperspectral imaging spectrometers, Raman imaging spectrometers, spectrographs & spectrometers, gratings and design services. We also deliver original diffraction gratings including original planar, aberration-corrected concave/convex, and rowland circle gratings in standard, as well as custom formats.