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Display Windows & Optical  Filters – Technical Details

Keyflex provides advanced display windows and optical filters engineered for durability, clarity, and electromagnetic protection. Our solutions include:

  • High Scratch Resistance Filters – up to 20× more resistant than acrylic
  • Contrast Enhancement Filters – improved readability in bright or challenging environments
  • EMC Embedded Mesh – effective shielding against EMI/RFI interference

LCD filters are designed to protect liquid crystal displays, reduce glare, and extend display life.

Optical Laminated Windows & Filters
  • Optolite – High Scratch Resistance (HSR)
  • Optolite is a clear plastic with excellent optical transmission, available in thicknesses from 0.5 mm to 8 mm in half‑millimetre increments.
  • Can be cut to custom shapes and sizes.
  • Available in clear or tinted colours.
  • Printing can be applied to the front or rear surface for product branding or design enhancement.
Optolite HSR offers:
  • 20× higher scratch resistance than acrylic
  • Outstanding chemical resistance for demanding environments
  • Maintains excellent optical clarity and transmission
Shielded Filter Windows
  • Manufactured from Optolite or Optolite HSR, shielded windows:
  • Minimise radio frequency emissions from enclosed electronics
  • Protect equipment from external electromagnetic interference (EMI/RFI)
  • Use micro‑fine conductive wire mesh for attenuation
  • Available in multiple mesh thicknesses and sizes to suit frequency and viewing requirements
Keyflex Optical Filters
  • Optolite Clear HSR Optical Filters are ideal for LCDs and other display applications requiring:
  • High scratch resistance
  • Impact resistance
  • Heat and chemical durability
Common LCD Problems Solved:
  • Scratching & dirt on soft polariser surfaces
  • Front surface reflections causing readability issues
  • Restricted viewing angles
  • UV degradation in sunlight
  • Electromagnetic interference
  • Bezel sourcing challenges

Key Benefits of Optolite Clear HSR:
  • Abrasion resistance up to 20× acrylics
  • Excellent impact resistance
  • Chemical resistance against common solvents
  • Lightweight (≈50% of glass) with optical properties comparable to crown glass
  • Continuous operating temperature >100°C
  • Optional non‑glare finishes to reduce reflections
  • Optional UV inhibitor for outdoor displays
  • Optional blackened stainless steel mesh for EMI shielding (60–70 dB attenuation, 100 kHz–1 GHz)
  • Available in thicknesses down to 0.5 mm for maximum viewing angle or space‑critical designs

Diffusers & Customisation
  • Optolite Diffusers soften bright LED light to prevent “burn out” and ensure even illumination.
  • Silk screening services allow logos or borders to be added for bezel integration and enhanced aesthetics.
  • Double‑sided adhesive tape enables quick and easy filter attachment.

Technical Data – EMC & RFI Shielded Windows
  • Optolite Shielded Filter Windows combine electromagnetic shielding with contrast enhancement for electronic displays.
  • Features:
  • Up to 70 dB attenuation
  • Available in clear HSR or coloured band‑pass filters
  • Flat or curved designs
  • High impact, abrasion, heat, and chemical resistance
  • Lightweight, robust construction
  • Optional blackened wire mesh to reduce reflections
  • Cast‑in non‑glare finishes
  • Micro‑fine mesh at any desired angle
  • Wide range of busbar termination options
  • Fully fabricated to customer specification
  • Technical Expertise: Decades of experience in optical engineering and display protection
  • Custom Solutions: Tailored designs to meet unique application requirements
  • Durability & Performance: Products built for high reliability in demanding environments
  • Industry Applications: Serving electronics, automotive, aerospace, medical, and industrial sectors