Our Optics Laboratory provides a stable experimental environment for the development and evaluation of planar diffractive optical elements. The laboratory is equipped with a 532 nm single-longitudinal-mode laser that provides a highly coherent, low-divergence, and stable TEM₀₀ beam for precision optical measurements. The laser source is thermally stabilized using a water-cooling system to ensure reliable and repeatable operation. Optical systems are assembled on four-meter-long vibration-isolated optical tables, enabling the extended propagation distances required for testing optical elements with large focal lengths. The laboratory also includes CMOS cameras for point-spread-function and image measurements, optical power and intensity meters, and a range of optomechanical and beam-conditioning components. The facility supports quantitative evaluation of focusing characteristics, imaging performance, diffraction efficiency, and optical intensity distributions of planar diffractive optical elements, including Fresnel zone plates and photon sieves.