In SLA system, light intensity, wavelength, and optical path highly influences printing quality and efficiency. Conventional LCD 3D printer tends to use thumb-size COB LED with Fresnel film. It is still not good enough for overall uniformity, especially for large area & edge area. Their major target is to reduce the cost. To further improve it, Phrozen's ParaLEDTM Optical Engine uses LED array matrix with the size same as LCD panel. Moreover, we narrow down the LED emission angle to make it as parallel as possible. That way, we can increase the efficiency that light pass through LCD and, therefore, greatly improve printing speed and quality.

Looking on the market, you will see Z-axis of many 3D printers are not fixed on top (or just simply put a cap on it). Overall Z-axis design is based on simple optical axis and rail shaft. These will cause severe wobbling during 3D printing process, especially for large & high models. That's why Phrozen team uses Twin Linear Rail, Ball Screw, and Ball Bearing with Aluminum-CNC part to on our Z-axis. That can assure linearity and minimize impact of loaded force during the printing process. This concept has been widely verified in our previous model Phrozen Make XL, 8.9 inch LCD 3D Printer. Now we adopt same design again on our Phrozen Shuffle XL.