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.