Human-computer interaction has emerged as a crucial technological direction in the era of the Internet and the Internet of Things. It has significantly accelerated the transition of PCs and mobile devices from basic buttons to styluses, touchscreens, and now towards more intelligent and portable forms. In recent years, 3D sensing and micro-projection technologies have further enhanced user experience by freeing both hands, paving the way for the next major evolution in human-computer interaction after buttons and touchscreens.
The current market for 3D sensing and intelligent interactive applications is broadly divided into input and output segments. On the input side, 3D depth perception enables more intuitive and intelligent interactions, driving the integration of 3D technology into smart hardware. Many real-world examples, such as virtual shopping and home decoration, have already demonstrated the potential of these technologies. Looking ahead, VR and AR will play an even bigger role when combined with image processing, 3D modeling, and display technologies.
With the rise of smart speakers, there has been a growing demand for efficient output solutions. The embedded market is one of the fastest-growing areas, with a compound annual growth rate exceeding 30%. As smart audio evolves, so does the demand for intelligent interaction, leading to more video-enabled smart devices. Additionally, as eye health becomes a growing concern—especially among children—the education sector is also becoming a key area for future human-computer interaction development.
According to industry reports, the 3D sensing market is expected to grow from $1.328 billion in 2016 to $9.034 billion by 2022, reflecting a compound annual growth rate of 38%. With global tech giants introducing 3D camera technology, applications like face and gesture recognition are set to dominate the market. Smart speakers, robots, smartphones, wearables, and AR devices are all expected to benefit from this trend. Moreover, the micro-projection market—especially embedded systems—is also poised for rapid expansion. In the near future, 3D perception and micro-projection will become standard features in smart devices.
There are three main technologies used in 3D cameras: Time-of-Flight (TOF), structured light, and multi-angle imaging (also known as binocular stereo vision). TOF uses modulated optical pulses to measure distance based on phase differences, offering fast response times and high accuracy. Structured light projects mathematically designed patterns onto surfaces and captures images to generate 3D models, making it ideal for low-power, compact devices like smartphones. Multi-angle imaging relies on parallax to calculate depth, but its performance under low-light conditions is limited, restricting its use to specialized applications like robotics and certain VR products.
In the realm of micro-projection, three key technologies exist: LBS, DLP, and LCOS. While LCOS was once popular, it has lagged behind LBS in performance and is expected to be phased out. DLP remains widely used, while LBS offers advantages such as no need for focusing, high resolution, and compact size. This makes LBS particularly suitable for embedded systems in mobile phones, AR glasses, and wearable devices. As consumer electronics continue to shrink, LBS is expected to gain more traction due to its flexibility and efficiency.
Goer Co., Ltd., one of China’s leading MEMS sensor suppliers, showcased its latest innovations at the 2017 Sensor China Exhibition. The company’s modular products include MEMS microphones, 3D sensing modules, micro-projection interactive systems, and integrated sensor solutions. Among them, micro-projection technology, based on LBS, stands out for its focus-free projection, high resolution, and low power consumption. These features make it ideal for applications such as mobile projectors, smartphones, and AR devices.
In addition to micro-projection, Goer has developed advanced MEMS sensors, including pressure sensors, combined sensors, and heart rate monitors. Its air pressure sensor, with a compact design and high precision, is widely used in drones and aircraft models. The company's combined sensors integrate microphones, barometers, and temperature sensors, reducing crosstalk and saving space. Meanwhile, its heart rate sensor combines photosensors and ASIC circuits, enabling accurate monitoring across various wearable devices.
When asked about the secret behind Goer’s success, Dr. Fang Huabin, General Manager of the Sensor and Microsystems Division, summarized it in just eight words: “Based on R&D, longer than manufacturing.†He emphasized that Goer focuses on long-term technological innovation rather than short-term production. This strategy ensures that their products remain aligned with market trends and technological advancements, allowing them to stay competitive in the fast-paced consumer electronics industry.
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