Linear and Circular Engineered Diffusers

NIL Technology offers standard engineered diffuser stamps. Engineered diffusers control light output of lighting elements and light sources like lasers, LEDs, light fixtures and blacklight units for LCDs. Engineered diffusers are surface diffusers with a very high transmission efficiency. Upon request NILT also offers customer specified, tailor-made engineered diffusers with precise diffusion control and linear, elliptical and circular diffusion profiles.

The engineered diffuser standard stamps were specifically designed as a set of multi-purpose engineered diffusers for R&D work, as well as for product and process development.

The standard engineered diffuser stamps can be delivered with or without anti-sticking coating.

Note that the standard engineered diffuser stamps are only for test and product development
purposes. A commercial use of the standard engineered diffuser stamps requires a royalty
agreement.

Specifications for Linear and Circular Engineered Diffusers

SpecificationsType BType AType C
Stamp IDARSS_B_06ARSS_A_02ARSS_C_02
MaterialNickelNickelNickel
Grating typeHexagonal ArrayHexagonal ArrayHexagonal Array
Pitch300 nm250 nm250 nm
Average height300 nm350 nm350 nm
Stamp thickness300 µm300 µm300 µm
Stamp size
70 mm x 70 mm120 mm x 120 mm250 mm x 250 mm
Active area50 mm x 50 mm100 mm x 100 mm200 mm x 200 mm
Expected %R PMMALess than 0.6%Less than 0.2%Less than 0.2%
Pattern polarityProtrusionsProtrusionsProtrusions

Specifications for AR stamp for the near infrared range

Circular versionType BType D
Stamp IDEDSS_B_C_V1EDSS_D_C_V1
Structure typeEngineered DiffuserEngineered Diffuser
Output typeCircular diffusionCiruclar diffusion
Diffusion angles (FWHM)*25°25°
MaterialNickelNickel
Stamp thickness300 µm300 µm
Stamp size70 mm x 70 mm120 mm x 120 mm
Active area50 mm x 50 mm100 mm – 100 mm
* Embossed into a material with an optical index of refraction of 1.5

 

 
Linear versionType BType D
Stamp IDEDSS_B_L_V1EDSS_D_L_V1
Structure typeEngineered DiffuserEngineered Diffuser
Output typeLinear diffusionLinear diffusion
Diffusion angles (FWHM)*1o / 80o1o / 80o
MaterialNickelNickel
Stamp thickness300 µm300 µm
Stamp size70 mm x 70 mm120 mm x 120 mm
Active area50 mm x 50 mm100 mm x 100 mm
* Embossed into a material with an optical index of refraction of 1.5

Examples - ED Standard Stamp

Different examples of patterns and features