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CLAREX High Scatter Optical Transmission Light Guides (HSOT)

A custom clear acrylic sheet designed to illuminate when edge-lit.

CLAREX high scatter optical transmission (HSOT) light guide sheets are made custom by loading light scattering particles into clear cast acrylic sheets. When edge-lit, those particles help spread light throughout the material, creating a bright, illuminated appearance that can be adjusted to match your application’s specifications.

HSOT is ideal for see-through light guide applications, including assemblies positioned in front of displays such as E-Ink screens. It is also a strong fit for illuminated signage, especially when light output is needed from both sides of the panel. For more specialized uses, the material can be machined into custom shapes for illuminated indicators, gauge pointers, and other edge-lit components.

Note: CLAREX light guides are best suited for smaller display applications, up to approximately 24″ diagonal. We have limited capabilities for larger-format panels.

A clear light guide (left) compared to a HSOT light guide system (right) for an e-reader.

Benefits of HSOT Light Guides

Particle type and density can be adjusted for each application to achieve the desired brightness, diffusion, and visual effect.

HSOT material can be cut to size and machined into custom shapes for a wide range of illuminated components and assemblies.

Transparent HSOT material is well-suited for front-lit, see-through light guide applications used with low-power displays such as E-Ink.

Common HSOT Applications

Formulated for see-through, edge-lit applications where controlled light scattering and custom illumination are required.

Used to distribute light through the sheet in edge-lit assemblies


A see-through option for front-lit, low-power display applications


Suitable for signage and light box applications that need light output from both sides


Can be cut and machined into pointers, indicators, and other specialty illuminated parts


Sample materials may be available to help you evaluate material performance.

  • 1.5mm
  • 2.0mm
  • 2.5mm
  • 3.0mm
  • 3.5mm
  • 4.0mm
  • 4.5mm
  • 5.0mm
  • Standard Size: 400mm x 550mm
  • Custom sizes: Maximum dimensions depend on application. Contact us to discuss available options.

Can be fabricated and finished to customer specifications.

HOW IT WORKS

How HSOT Light Guides Work

Light enters through the edges of the clear acrylic sheet and travels through the material. Embedded light-scattering particles redirect that light throughout the panel, creating an illuminated appearance while allowing the sheet to remain see-through. Particle type and density can be adjusted to achieve the desired light output and diffusion.