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Imaging in 3D


integrating VCSELs. Teir sweet spot has been in short-distance data communication, because of their low power consumption and competitive price compared to edge-emitting lasers (EELs). Driven by the development of data centres, the VCSEL market and production boomed in the 2000s with the internet’s popularity, and then grew steadily. Some new applications for VCSELs emerged, like laser printers and optical mice, but weren’t strong growth drivers. In 2014, almost 20 years since


the technology was first used in datacoms, VCSELs started to make their way into high-volume consumer smartphones. But this coupling with detectors for proximity sensing and autofocus functions was only the beginning of the VCSEL success story. In 2017 Apple released the iPhone X, with a 3D sensing function based on this technology. Te iPhone X integrates three different VCSEL dies, for the proximity sensor and the Face ID module, and made the VCSEL market explode in 2017, propelling overall revenue to around $330 million. Good iPhone X sales have now


triggered the interest of other smartphone brands in this 3D sensing function. Less than one year aſter the release of Apple’s flagship, its competitors are now following the same trend and starting to integrate 3D sensing technologies. Xiaomi and Oppo were the quickest on the draw, with the Xiaomi Mi8 and the Oppo Find X models presented in the second quarter of 2018. Other leading smartphone players like Huawei, Vivo and Samsung are also expected to integrate VCSELs into their flagship models by 2019. In this context, the explosion


of VCSEL demand initiated in 2017 will persist for the next five years, potentially multiplying the business opportunity more than tenfold. During that time, the technology might also find some new growth drivers in other high-volume applications such as


automotive lidar or gas sensors. To conclude, 3D sensing is


a revolutionary touchless user interface for the consumer industry, used either for biometry, avatars, animojis, or social media. Tis year is the apex of growth for 3D sensing thanks to the successful introduction on the front side of smartphones. Penetration is


expected to reach 55 per cent by 2023; the revenue generated by 3D imaging and sensing devices will reach $18.5 billion in 2023. Te effects of this will spread through consumer products and back toward higher-end markets, helping in key mega trends such as artificial intelligence, augmented reality and robotics. O


Dr Guillaume Girardin is director of the photonics, sensing and display division at market research and strategy consulting company Yole Développement. As director he also performs several technical activities covering sensing technologies, including solid-state lighting and displays, MEMS, sensors, actuators, imaging, photonics and the optoelectronics fields.


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Yearbook 2018/2019 • Imaging and Machine Vision Europe 39


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