Based on 3D printing technology, low-cost, high transmittance, and flexible AR optical modules are launched

Recently, researchers from the University of Melbourne collaborated with Taiwan's KDH Design Company and MCN Nano Processing Center to develop the first flexible, highly transparent AR display module. It is characterized by using low-cost polymer materials based on 3D printing technology. It can achieve ultra-thin, high-energy-efficiency, and lightweight designs, which is expected to promote the application of AR technology in more industries.

According to Qingting.com, mainstream AR optical modules such as optical waveguides are based on glass material, and the manufacturing process is time-consuming and expensive. It requires the use of photomasks, lamination, cutting, etching and other processes to superimpose microstructures. Due to the high difficulty of microstructure processing, low yield, and strict requirements on the angle of the light source, it is difficult to flexibly adapt the appearance design of AR glasses products.

The University of Melbourne's solution is relatively flexible and can be applied to many different shapes such as curved surfaces and uneven surfaces. It also supports a variety of functions. 3D printing is an additive manufacturing technology that can accurately control the design and manufacturing process to ensure the yield rate of the manufacturing process.

It is worth noting that KDH Design Company has previously developed AR helmets and military headsets, and next plans to commercialize this technology and combine it with AR glasses, AR sports goggles, AR helmets and AR HUD. However, this technology seems to be mainly used as a hood material. The principle is similar to that of a photosensitive film, which means that it may be at a certain distance from the light source. It is not sure whether it can be compactly integrated with the display unit through the internal reflection light path like an optical waveguide.

Previously, Mitsubishi Chemical and DigiLens collaborated to explore low-cost AR optical solutions for plastic substrates, which can also be used in devices such as AR helmets. The difference is that it is a rigid design. Of course, compared with glass materials, the actual application effect of plastic materials has yet to be verified.

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