Optical image Character LCD Modules

Calculate the position of the optical image through more than two groups the CIR (CMOS / CCD) observations by the side of the object's shadow.
CMOS / CCD technology is mature, this technology is more and more widely used, the micro-CIR can already do a second output screen of more than one hundred, so is the fastest response to a technology, Of course, as CIR increasingly high resolution, faster and faster processing speed, photosensitivity is getting better and better, and you can determine the size of the shadow, so you can make more and more changes in the application, the drawback is easier the influence of light.144x32 lcd
The manner in which they are judged is the observation of the four corners, there will be more than two groups of CIR, four weeks there will be a reflective or light-emitting material (invisible light such as UV or IR) or on one side of a light-emitting substance (invisible light such as UV or IR etc.).
Common technology, there are two, one using infrared light to generate the shadow of the object, and another with ultraviolet light to see the light absorption of the object, special laser to see the reflection of the object.graphic oled display