Light guide PC film/sheet
Light Guide PC Film/Sheet (Optical-Grade Light Guide Polycarbonate Film)
Manufactured via precision extrusion from optical-grade polycarbonate (PC) resin, this ultra-transparent film and sheet does not emit light itself. Instead, it acts as a high-transmittance carrier and low-scattering light-path substrate within light guide systems.
With superior clarity, zero foreign contaminants and rigorous control over fish eyes, it uniformly conducts incident or edge-lit light across the panel surface. When combined with reflective sheets, diffuser films and micro dot patterns, it achieves even light emission.
Relationship with General Optical-Grade PC (Brief Explanation)
Light guide PC is a dedicated subset of optical-grade PC material tailored exclusively for light guide and lighting optical paths.
It imposes stricter standards on gauge thickness uniformity, internal stress and surface cleanliness, rather than merely meeting basic high light transmittance requirements.
Official Product Code: DFPCR11
- Color: Natural clear transparent
- Surface Finish: Double-sided polished (Polished/Polished) to maximize straight light transmission and dot pattern reflection efficiency
- Thickness: 0.100–3.500 mm (0.004"–0.138")
Ultra-thin gauges (approx. 0.05–0.175 mm) serve as light guide films for keypad backlights;Medium-to-thick gauges (0.5–3.5 mm) work as base substrates for small-size light guide plates and light box homogenizing panels.
- Width: Standard 915 mm and 1220 mm (3 ft – 4 ft); custom cutting and slitting available upon request
- UL Flame Rating: UL 94 V-0 for thickness ≥10 mils; Oxygen Index ≈33%
Core Performance Advantages
- High light transmittance & ultra-low haze: Enables long-distance light transmission without blurring
- Extremely low internal stress: Prevents optical distortion or warpage that causes uneven brightness during long-term operation
- Tight gauge variation control: Minimizes the risk of visible brightness stripes on the light-emitting surface
- Flexible bending resistance: Thin grades fit curved light paths and special-shaped lamp grooves
Typical Applications
- PC light guide substrates for edge-lit structures of monitors and navigation instruments
- Light guide film for laptop and backlit keyboards
- Light homogenizing carriers for LED and advertising light boxes
- Backlight assemblies for illuminated nameplates and signage
- Internal light guiding, homogenizing and isolating layers for all types of lighting fixtures
