An important feature of the digital signage network is that the content can be updated in real time, allowing users to set the updates as needed. With the advancement of technology, the options for touch screen functionalities have expanded significantly, making it essential to understand the benefits and limitations of different types of touch screens.
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Earlier, resistive and capacitive touch screens dominated the market. However, the growing demand for touch applications has led to the introduction of more technologies to enhance user experience and production processes. Infrared (IR) touch screens have emerged as an excellent alternative for various applications that may not be suited for capacitive or resistive technologies.
Understanding IR-Infrared Touch Screen Technology
An infrared touch screen integrates an LCD monitor with an IR touch frame. This touch frame, which features LEDs and photodetectors, is designed with an optical bezel that allows LEDs to emit infrared beams, which are invisible to the human eye. This setup creates an optical grid on the display's surface, and during a touch event, the interruption of light beams is detected by the photodetectors.
Because of their reliability, precision, and longevity, IR-Infrared Touch Screens are utilized across various interactive applications, including retail, gaming, healthcare, and manufacturing. Nevertheless, traditional IR touch screen technology comes with certain drawbacks.
Challenges of Infrared Touch Screens
Effect of Bright Light Interference:
Ambient light may pose challenges for infrared touch screens. Intense sources of infrared light, like bright sunlight or strong artificial lighting, can hinder touch detection.
Limited Touch Detection in Certain Scenarios:
If a user employs a stylus that fails to sufficiently block light beams, the screen may not respond. It is crucial for the stylus to have enough width to interrupt at least one light beam to register a touch event.
Increased Power Consumption Compared to Other Technologies:
Traditional infrared touch screens generally require higher power levels than other types, such as capacitive or resistive screens. The continuous emission of infrared light often necessitates a more powerful energy source.
To address these challenges, A D Metro has developed a form of IR touch technology known as linear correlating infrared (LCIR) touch technology. This advanced sensor system provides responsive, precise, and glove-compatible touch response, enabling zero-force operation across various applications.
The LCIR system boosts traditional infrared touch technology significantly. Unlike traditional systems, which use rectangular sensor frames and may incorporate a bezel for the controller interface, LCIR systems employ a compact sensor frame that pairs with an external controller board. This design allows for easier integration with displays, removing the complications associated with larger, less adaptable frames. Further, the absence of a glass substrate panel enhances display clarity by eliminating obstructions that could diminish transmissivity or contrast enhancements.
The linear correlation technology employs simultaneous scanning of light beams in groups, rather than one at a time. This approach maintains optical alignment without a glass substrate, enhancing visibility for the user. Additionally, LCIR offers full immunity to ambient light interference, including challenges presented by bright sunlight or flickering lights, while supporting two-touch functionality for actions like pinch, zoom, and rotate.
A D Metro’s revolutionary LCIR solution provides a compelling alternative for scenarios requiring multi-touch capabilities, particularly where projected capacitive sensors may face operational limitations. This technology thrives even in adverse environments like high RFI circumstances or direct sunlight, delivering:
- 100% optical clarity and maximum contrast without a substrate layer;
- Unaffected performance in bright sunlight, even under strobing conditions;
- Reliable two-touch functionality;
- Compatibility with gloved fingers and 5mm stylus input.
In Conclusion
A D Metro’s innovative LCIR touch technology enhances the functionality of traditional IR-infrared touch screens for various interactive applications. Most importantly, LCIR touch screens present an effective solution for sectors like defense, automotive, aviation, and medical applications where reliable touch function is imperative.
Contact us to discuss your requirements regarding infrared touch screen for retail. Our knowledgeable sales team is ready to help you identify the options that best suit your needs.
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