Halo Holographic Helmet Uses Tungsten Trioxide Electrochromic Film

Virtual Reality (VR) and Augmented Reality (AR) are now leading the forefront of technology, what the surprises will be by the further combination of AR and VR? Recently, source pointed out that Halo holographic helmet has opened the official website pre-sale, and will deliver to the customers after the International Consumer Electronics Show in January 2017. It is reported that this holographic helmet can switch in a key between AR and VR, using the most advanced processor, and based on a whole new generation customization system, can achieve low latency display in the sensor; at the same time, it supports gesture recognition, without any external testing equipment to achieve SLAM, and supports real-time 3D modeling space. In addition, the key to switch between AR and VR of this holographic helmet in a key lies in the eyepiece glass with a special chemical materials sandwich, after conductive of the special sandwich of film, a reversible color change of light will occur, such as the use of tungsten trioxide electrochromic film will turn blue after the light irradiation.

 

The original state of tungsten trioxide electrochromic film appears in pale blue, the color gradually deepened after power, and the reason lies in tungsten bronze compound (MxWO₃) is produced. Tungsten bronze is a tungsten-containing nonstoichiometric compound, it appearance looks like copper and has the chemically property of inert, its properties changed with the variety of M and value of x, which can produce properties changing of color, conductor or semiconductor and so on, such as when M = Na , x = 0.2, MxWO₃ shows blue.

 

Tungsten trioxide is the most classic non-organic electrochromic material, since WO₃ electrochromic film phenomenon has been found in 1969, people have committed to its study and gradually deepen its research. Electrochromic phenomenon is the chemical composition and the valence of the electrochromic material shows a reversible change under the applied electric field, and ultimately reflecting in the color changing; with this property, electrochromic film can be widely used in construction, automotive, aerospace and other fields, also it plays a role in energy-saving thermal control and so on.

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