A rectangular grooving tool having a cutting edge width as small as 5 μm. Grooves of high aspect ratio not achievable by the photolithography and ion beam methods can be produced within a short period of time. The cutting edge that is very precise and durable makes this tool ideal for linear ultra fine grooving of holographic gratings and ultra fine & clear grooving of LCD light guide plates.
Holographic grating molds, linear fine grooving, molds that require ultra fine grooving, optical sheet molds