Polycrystalline sillicon (also called: polysilicon, poly crystal, poly-Si or also: multi-Si, mc-Si) are manufactured from cast square ingots, produced by cooling and solidifying molten silicon. The liquid silicon is poured into blocks which are cut into thin plates. The solidification of the material results into cells that contain many crystals, making the surface of the poly-Si/ mc-Si cell less perfect than its mono-Si counterpart. Due to these defects, polycrystalline cells absorb less solar energy, produce consequently less electricity and are thus less efficient than monocrystalline silicon (mono-Si) cells. Due to their slightly lower efficiency, poly-Si/ mc-Si cells are conventionally a bit larger, resulting in comparably larger PV modules, too. This factor has to be considered if space is limited. Nevertheless, the advantage of poly-Si/ mc-Si cells is that they are easier and thus cheaper to produce. Poly Solar Cell,Solar Photovoltaic Cell,Most Efficient Solar Cell,Polycrystalline Solar Cells Wuxi Sunket New Energy Technology Co.,Ltd , https://www.sunketsolar.com
Is the mobile 3D camera exclusive to Apple? Domestic Obi Zhongguang can also do it
There’s a strong possibility that Apple's upcoming event will take place on September 12, unveiling the latest generation of iPhones. The buzz surrounding the new iPhones has been quite diverse. Renowned analyst Ming-Chi Kuo has stated that Apple decided against integrating under-display fingerprint recognition due to technical hurdles. While mature Touch ID technology exists, under-display fingerprint recognition might not yet offer the best user experience. Should this prove accurate, it raises questions about whether Apple will opt for a more innovative approach during the 10th anniversary of the iPhone. Early predictions suggested Apple would support a front-facing 3D camera, and with the introduction of ARKit alongside iOS 11 in June, coupled with recent AR applications showcased by various developers worldwide, including AR Measure, it seems the future of 3D cameras in smartphones is looking bright.
In particular, the integration of facial recognition and iris scanning via a 3D front camera could become a significant trend in both smartphone and broader smart terminal industries. Whether these speculations come to fruition remains to be seen, but 3D cameras are undoubtedly set to be a pivotal advancement in mobile camera technology.
What are the current 3D camera technologies? The three main 3D imaging methods are:
1) Structured Light: This projects specific light patterns onto objects, capturing changes in the optical signals to determine an object's position and depth, thereby reconstructing the entire three-dimensional space.
2) Time of Flight (TOF): Utilizes a specialized sensor to measure the time taken for near-infrared light to travel from emission to reception, determining the object's distance.
3) Binocular Vision: Employs two cameras to photograph an object, calculating the distance using principles of trigonometry.
As illustrated above, structured light offers a cost-effective solution that can rival or even outperform other 3D camera technologies, requiring less complex algorithm development.
What technology does Apple's front 3D camera use? It is anticipated that the iPhone 8 will feature PrimeSense structured light technology. Given Apple's tendency to keep its technologies proprietary, since acquiring PrimeSense in 2013, they've effectively monopolized structured light solutions in the global market. Domestic smartphone manufacturers are now eager to adopt 3D camera technology, actively seeking alternatives to PrimeSense.
Enter Shenzhen Obi Zhongguang Technology Co., Ltd., which has successfully filled this gap! Established in 2014 as part of Shenzhen's Peacock Plan, Obi Zhongguang's 3D depth cameras—Astra, Astra Pro, and Astra Mini—entered mass production in 2015. By 2016, they secured strategic investment from MediaTek, becoming one of only four global companies capable of mass-producing consumer-grade 3D sensors after Apple, Microsoft, and Intel. Their products support a variety of functions, including face recognition, gesture tracking, human skeleton recognition, 3D mapping, environmental perception, obstacle avoidance, and more, with applications ranging from TVs and mobile devices to robots, drones, VR/AR, smart home security, and automotive driver assistance.
Recently, Obi Zhongguang is set to release a new-generation structured light 3D sensor camera. Compared to previous models, it is more compact, features higher resolution parameters, and consumes less power, making it ideal for mobile phones, tablets, and laptops. This innovation will undoubtedly disrupt the design landscape of mobile terminals, especially in the smartphone sector.
Obi Zhongguang’s products include a core 3D computing chip, advanced algorithms, and an SDK system, with over 300 domestic and international patents filed to date. Their R&D team boasts expertise spanning chip-level technology, deep algorithms, systems, frameworks, and application support.
With Obi Zhongguang leading the way in structured light 3D sensing, 3D sensor technology has found applications in interactive TVs, robotics, security, and beyond. As a global leader in AI-driven visual solutions, combining hardware and software, Obi Zhongguang aims to enable all devices to better understand the world around them.