Reflectance is the percentage of incoming light that a surface reflects. We explain the formula, specular, diffuse and total reflectance, how it is measured with an integrating sphere, what to check when comparing reflectance data, and measured values for black materials.

A high-precision spectrophotometer, the JASCO V-780, is now used at Musou Black to measure accurate reflectance and transmittance from visible to near-infrared wavelengths. This upgrade streamlines product development, improves quality control across materials, and enables more advanced technical support through precise optical data.

Musou Black Fabric KIWAMI just passed the Oddy Test — the gold standard for material safety in museums and archives. Here's how we tested it, what the results showed, and why it's now a top pick for exhibition and gallery display.

Near-infrared light starts just beyond red, at about 750 nm. Its wavelength range, how it behaves, and where it is used, from Face ID and security cameras to LiDAR, seen through our near-infrared camera.