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Special Features and Optical Treatments

IR Reduction

Our IR-Reduction film is a durable, optically clear, hard coated polyester filter that, when applied to the rear surface of our capacitive touch sensors, reduces the transmission of Infra-Red (IR) sunlight energy through the touchscreen towards the display. This can aid system thermal management and help reduce the amount of cooling within an outdoor self-service kiosk such as an ATM, or self-service ticket machine.

UV Blocking

Outdoor and some interior applications mean that the display can be exposed to direct sunlight. Whereas Zytronic touch sensors are completely unaffected by ultraviolet (UV) radiation, it can cause damage to the underlying display, especially LCD’s – which are ‘aged’ rapidly by unchecked exposure to UV light, and can cause yellowing of the screen. When specified in a touch sensor design, the additional filter we laminate into the rear of the touchscreen will block UV wavelengths of less than 300nm, including UVB and UVC.

Privacy

When sensitive and important information is to be viewed through our touch sensor, privacy filters can help protect private user information from the prying eyes of bystanders. Upon request we can laminate a privacy filter to the rear of the touchscreen – this polymer-based material contains microscopically small, parallel aligned blades (or louvres) that reduce or prevent the viewing of the displayed image outside of preset range of angles. The viewing angle can be altered depending on how we orient the filter during lamination.

Anti-Reflective

When a touch sensor is installed in a location exposed to strong sunlight or overhead lighting, if made from untreated glass, the reflection from the surface of the touchscreen may render the displayed image unreadable due to the harsh reflection. Specifying our hard-coated, anti-reflective (AR) glass allows this light reflection to be reduced by around 75% making it a good solution for sunlight readability. Furthermore, to enhance display transmission and brightness further, upon request, we can laminate an additional AR filter to the rear of the touch sensor, to provide near 99% of the light to be transmitted from the underlying display to the touchscreen user.

Related Case Studies

Ideum - Smithsonian Institution

With an 84" diagonal touch sensor, we helped supply the National Air and Space Museum of the Smithsonian Institution with touch capabilities to their lates exhibit.

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