Replica Gratings

Epigem manufactures technical grade replica gratings to customers’ specific requirements. The gratings are surface relief type. They are made from metal master tools such as the mandrel or the nickel embossing shim shown below.

Diamond turned grating mandrel	Nickel embossing shim of grating

Roll UV embossing equipment

The replica gratings are made by UV embossing onto a carrier substrate. The carrier substrate can be flexible or rigid and does not have to be transparent. The most commonly used substrate materials are PET (Mylar) film and glass. The equipment used for UV embossing rolls of grating film is shown. The film web width is 305 mm. The production is carried out under Class 100 clean room conditions. The process produces high resolution, high performance gratings. 1D or 2D type gratings can be produced.

Rolls of UV embossed grating film	Glass plate with grating stripes

Replica Gratings - Examples

Embossing EP 72/48Q 1.2um pitch 1.3um amplitude	Embossing EP 72/48A 1.2um pitch 1.0um amplitude	Embossing EP 40/46-1 500nm pitch 180nm amplitude	Embossing EP 40/46-5 200nm pitch 60nm amplitude