Optical imaging touchscreens are a type of touch screen technology that uses cameras and infrared light to detect finger or stylus inputs on the screen. These touch screens are known for their high accuracy, multi-touch capability, and durability. They are commonly used in applications such as smartphones, tablets, and interactive kiosks.
In this article, we will take a closer look at the technology behind optical imaging touchscreens and the benefits they offer compared to other touch screen technologies.
How Optical Imaging Touchscreens Work
Optical imaging touchscreens use cameras and infrared light to detect finger or stylus inputs on the screen. The touch screen is equipped with a number of infrared light-emitting diodes (LEDs) that emit infrared light across the surface of the screen. A camera located behind the screen captures the image of the screen and the infrared light. When a finger or stylus comes into contact with the screen, it blocks some of the infrared light.
The touch screen controller then processes this input and sends the information to the computer or device the touch screen is connected to. The computer or device then interprets the input and responds accordingly.
Benefits of Optical Imaging Touchscreens
- High Accuracy: Optical imaging touchscreens have a high accuracy rate, making them ideal for applications that require precision such as drawing or design programs.
- Multi-Touch Capability: Optical imaging touchscreens can detect multiple inputs simultaneously, enabling multi-touch gestures such as pinch to zoom and two-finger scrolling.
- Durability: The use of infrared light means that the touch screen is not affected by external factors such as dust or moisture, making them more durable than other touch screen technologies.
- Flexibility: Optical imaging touchscreens can be used with a variety of finger or stylus inputs and are not limited to finger touch.
Conclusion
Optical imaging touchscreens are a popular and reliable choice for many applications due to their high accuracy, multi-touch capability, and durability. They are commonly found in smartphones, tablets, and interactive kiosks. With the rise of touch screen technology, it is likely that we will continue to see optical imaging touchscreens being used in more and more applications in the future.