Optical PC film

Optical PC film, known as optical grade Polycarbonate (PC) film, is a transparent plastic film made from high purity polycarbonate resin through precision extrusion or casting process. Designed and manufactured to meet the stringent requirements of optical applications, the film has excellent optical, mechanical and environmental properties.

Features

1. Excellent optical properties
   • High Transparency: Optical PC films have extremely high light transmittance, enabling near lossless transmission of light and ensuring clear, bright visual effects in optical components.
   • Low dispersion: its refractive index to different wavelengths of light varies little, helping to reduce chromatic aberration, to ensure the authenticity and consistency of colour reproduction.
   • Excellent spectral transmission properties: specific types of optical PC films can selectively transmit or reflect for specific wavelengths, suitable for optical filtering, light control and other fields.
   • Good yellowing resistance: after long time exposure to ultraviolet rays, the film can still maintain high optical purity and is not easy to be yellowed, which ensures the optical quality under long-term use.
2. Excellent Mechanical Properties
   • High impact resistance: polycarbonate itself has a very high impact strength, made of film can remain intact even when subjected to external impact, reducing the risk of damage caused by collision or vibration in the production and use process.
   • Good dimensional stability: under a variety of temperature and humidity conditions, optical PC film shows good dimensional stability and low coefficient of thermal expansion, which is conducive to maintaining accurate optical gap and alignment in precision optical equipment.
   • Easy processing and moulding: with good thermoplasticity, it can be processed into complex shapes and structures through thermoforming, cutting, bending, bonding and other ways, which can adapt to the design needs of various optical devices.
3. Strong environmental adaptability
   • Weather resistance: good resistance to ultraviolet rays, weather aging performance, can be used outdoors or in harsh environments for a long time without affecting its optical and mechanical properties.
   • Heat Resistance and Flame Retardant: Optical PC films usually have a high glass transition temperature and flame retardant rating, which can maintain performance at a certain high temperature and inhibit the spread of fire in case of fire.

Applications

Optical PC films are widely used in a variety of high-tech industries and daily life due to their unique and comprehensive performance:

1. Optical display industry
   • LCD/LED backlight panels: used as backlight diffuser or brightening film for LCD and LED displays to provide uniform light distribution and brightness enhancement.
   • Flat panel displays: used as a protective layer or optical compensation film for new display technologies such as touch screens, e-paper, OLEDs, and so on.
   • Optical filters: used to filter light of specific wavelengths, such as infrared cut-off filters, polarisers, etc., to enhance display quality or achieve specific visual effects.
2. Optical Device Manufacturing
   • Optical lenses: to make lightweight and thin optical lenses, such as camera lenses, microscope objective lenses, telescope lenses, etc., thanks to its high refractive index and excellent optical performance.
   • Optical Fibre Communication: used as encapsulation material for optical communication components such as optical fibre connectors, couplers, etc., to guarantee the stability and efficiency of signal transmission.
3. New energy field
   • Solar panels: used as encapsulation material or anti-reflective film for photovoltaic modules, to improve the utilisation of light energy and enhance the weather resistance and service life of the panels.
4. Electronic appliances and communications
   • Electronic display protection: to provide scratch-resistant and burst-resistant protective layer for the screens of mobile phones, tablet PCs, TVs and other electronic devices.
   • Optical Sensor Encapsulation: Window materials for optical sensors such as ambient light sensors, distance sensors, etc., to ensure that the sensors accurately perceive light signals.
5. Consumer protection products
   • Anti-glare lenses: used in sunglasses, goggles, helmet masks, etc., to provide clear vision and reduce glare interference.
   • Anti-peep film: used in computer monitors, mobile phone screens, etc. to prevent side peeping and protect user privacy.