Nanometrics, Bio-Rad, and Accent are leading manufacturers of mask and wafer inspection equipment. These systems are essential in the semiconductor industry to identify defects, ensure quality control, and improve the production yield of advanced electronic devices. Nanometrics offers a range of mask and wafer inspection units, including the RPM 2000, CALIPER Q300, and Q200i. The RPM 2000 is an advanced reticle inspection system designed to detect defects on reticles used in lithography processes. It combines high-resolution imaging with sophisticated algorithms for accurate defect identification. The CALIPER Q300 is a wafer inspection system that provides comprehensive inspection of patterned wafers, identifying defects critical to device performance. The Q200i is a mask inspection system that utilizes high-resolution imaging and multi-wavelength illumination for detecting defects on photomasks. Bio-Rad specializes in confocal imaging machines for biological research, including mask and wafer inspection applications. Their tools are equipped with confocal and multiphoton imaging capabilities, allowing for high-resolution inspection of biological samples, including wafers and masks. These assets provide enhanced sensitivity and resolution, enabling precise defect identification. Accent offers inspection models tailored for the semiconductor industry. Their products incorporate advanced imaging technologies, such as dark-field and bright-field imaging, to facilitate accurate defect detection. These equipment ensure effective quality control and yield improvement for manufacturing processes. The mask and wafer inspection systems manufactured by Nanometrics, Bio-Rad, and Accent offer analogues in terms of their ability to detect defects and improve production yield. Their advantages lie in the cutting-edge imaging technologies employed, which enable high-resolution inspection and accurate defect identification. Examples of these units, such as the RPM 2000, CALIPER Q300, and Q200i, represent the state-of-the-art capabilities offered by these manufacturers in the field of mask and wafer inspection.