IdealPhotonics' handheld wavelength meter is a portable optical measurement device used for the rapid and accurate determination of wavelength values (typically covering the ultraviolet to near-infrared band) of lasers or other monochromatic light sources. Its core function is to directly display wavelength values (units: nm or μm) through a built-in optical sensor and algorithm. It is suitable for on-site optical calibration, laser debugging, and light source characteristic analysis.Portable, easy to use, and allows for rapid and accurate determination of single wavelength values of lasers or monochromatic light sources, suitable for real-time on-site detection.