From exposure wavelength and numerical aperture, estimates lithographic resolution and depth of focus by the Rayleigh criterion for semiconductor process-node assessment.
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Rayleigh criterion | R = k1·λ/NA | Rayleigh criterion |
| Numerical aperture | NA = n·sin θ | Optics fundamentals |
| Depth of focus | DOF = k2·λ/NA² | Lithography principles |
| k1 factor | Process factor, 0.25 theoretical limit | Semiconductor lithography |
| Resolution enhancement | OPC, PSM, immersion lithography | Lithography evolution |
| Exposure wavelength | 365 → 248 → 193 → 13.5 nm | Technology roadmap |
光刻分辨率估算器基于瑞利判据,根据光源波长、数值孔径 NA 与工艺系数 k1/k2 估算光刻分辨率与焦深,适用于半导体工艺节点评估与光刻系统选型。