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相关概念视频

Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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在智能手机中模拟光传播,用于显示屏下传感器.

Qimeng Wang, Yi Liu, Guowei Zou

    Optics express
    |July 30, 2025
    PubMed
    概括

    一个新的通用模型使用弗雷内尔数来预测在没有边框的智能手机下显示屏传感 (UDS) 中的光行为. 该模型准确分析环境光传感器,摄像头和近距离传感器,优化UDS性能.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 电气工程 电气工程
    • 材料科学 材料科学 材料科学

    背景情况:

    • 没有贝塞尔的智能手机依赖于显示屏下传感器 (UDS) 来实现诸如环境光传感器 (ALS),摄像头 (UDC) 和近距离传感器等功能.
    • 通过显示面板的光扭曲显著降低了UDS信号质量,需要精确的光传播建模.
    • 现有的模型难以普遍解决影响不同UDS组件的各种光传播现象.

    研究的目的:

    • 提出一种通用模型,用于分析显示屏下传感系统中的光传播.
    • 准确地将UDS组件 (ALS,UDC,近距离传感器) 分类为不同的光传播模式.
    • 通过商用智能手机的实验数据验证模型的有效性.

    主要方法:

    • 基于弗雷内尔数的通用光传播模型被开发用于分类UDS模式.
    • 对显示屏下设置的环境光传感器 (几何光学),显示屏下设置的摄像头 (弗劳恩霍弗衍射) 和近距离传感器 (弗雷内尔衍射) 进行模拟.
    • 实验验证是在商用智能手机上进行的,比较模拟结果与测量数据的准确性.

    主要成果:

    • 该模型正确识别了ALS,UDC和近距离传感器,分别在几何光学,弗劳恩霍弗衍射和弗雷内尔衍射模式下运行.
    • 模拟准确地预测ALS的角响应减弱和UDC的图像模糊,实验数据显示高度一致.

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  • 对于近距离传感器的弗雷内尔衍射分析显示了45度的最佳传感器-探测器取向,并证实了该模型在几何光学上的优势.

    • 结论:

    • 提出的基于弗雷内尔数的模型为理解和优化UDS中的光传播提供了一个统一的框架.
    • 该模型在商用智能手机上的实验验证证明了其用于设计改进的UDS的实际适用性.
    • 这项研究为智能手机显示器中的光传播挑战提供了关键的见解,指导了未来的UDS开发.