相机：观众的眼睛。这里用的是 PerspectiveCamera（透视相机）。
虽然 S26 Ultra 的隐私屏幕技术脱胎于 2024 年演示的 Flex Magic Pixel 方案，但三星从 2020 年就已经开始提交各种有关屏幕防窥的专利，原理都围绕光束整形（Beam Shaping）及像素级视角控制。，推荐阅读WPS下载最新地址获取更多信息
FT Edit: Access on iOS and web。业内人士推荐搜狗输入法下载作为进阶阅读
Boeldt is a clinical psychologist with a background in child development. Her team found that nearly one in five children under the age of 13 spend four or more hours online daily, and that’s leading to increased depression and anxiety levels among the internet’s youngest users.，推荐阅读旺商聊官方下载获取更多信息
await blocking.writer.write(chunk2); // ok