https://wiki.yanding.com/ 2026-07-09T23:34:28+00:00 https://wiki.yanding.com/ https://wiki.yanding.com/lib/tpl/myconfluence/images/favicon.ico text/html 2026-07-09T12:45:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:%E6%88%90%E5%83%8F%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86:%E5%85%89%E5%AD%A6:%E5%87%A0%E4%BD%95%E5%85%89%E5%AD%A6:%E4%B8%BB%E5%85%89%E7%BA%BF%E8%A7%92&rev=1783601150&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Chief Ray Angle (CRA) 1. Definition The Chief Ray Angle (CRA) refers to the angle between the chief ray and the normal to the image plane. text/html 2026-07-09T11:14:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:%E6%88%90%E5%83%8F%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86:%E5%85%89%E5%AD%A6:%E5%87%A0%E4%BD%95%E5%85%89%E5%AD%A6:%E5%85%89%E7%9A%84%E5%8F%8D%E5%B0%84%E5%AE%9A%E5%BE%8B&rev=1783595663&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) 光的反射定律 当光传播到两种不同介质的分界面时，一部分光会返回到原来的介质中，这种现象称为光的反射。光的反射遵循以下定律： \(\theta _{r}=\theta _{i}\) text/html 2026-07-09T11:14:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:%E6%88%90%E5%83%8F%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86:%E5%85%89%E5%AD%A6:%E5%87%A0%E4%BD%95%E5%85%89%E5%AD%A6:%E5%85%89%E7%9A%84%E6%8A%98%E5%B0%84%E5%AE%9A%E5%BE%8B&rev=1783595663&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) 光的折射定律 当光线斜着从一种透明介质进入另一种透明介质时（例如从空气进入水中），光的传播方向会发生改变，这种现象称为光的折射。光在不同介质中的传播速度不同是导致折射的原因。$$n_1 \times \sin(\theta_1) = n_2 \times \sin(\theta_2)$$$n_1$$n_2$$\theta_1$$\theta_2$ text/html 2026-07-09T11:14:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:%E6%88%90%E5%83%8F%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86:%E5%85%89%E5%AD%A6:%E5%87%A0%E4%BD%95%E5%85%89%E5%AD%A6:%E5%85%89%E7%9A%84%E7%9B%B4%E7%BA%BF%E4%BC%A0%E6%92%AD%E5%AE%9A%E5%BE%8B&rev=1783595663&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) 光的直线传播定律 在各向同性的均匀介质中，光是沿直线传播的。这是最基本的光学现象，能够解释影子的形成、日食、小孔成像等日常现象。 text/html 2026-07-09T11:14:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:%E6%88%90%E5%83%8F%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86:%E5%85%89%E5%AD%A6:%E5%87%A0%E4%BD%95%E5%85%89%E5%AD%A6:%E5%85%A5%E7%9E%B3&rev=1783595663&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) 入瞳及其在相机成像测试中的应用 当我们观察人眼时，可见一黑色小孔（即瞳孔），所有入射光均通过瞳孔进入人眼。从生理上说，瞳孔是虹膜中央的孔，但我们观察到的并不是瞳孔本身，而是瞳孔通过其前面的屈光结构（如角膜、前房等）所成的像。相似地，如果我们在一个明亮的环境，从正面观察一个照相机镜头，会看到一个明亮的斑，这个斑便是镜头的光圈（通常置于镜片之间）经过其前面的镜片所成的像，称为入射光瞳（以下简称入瞳）。在相机的成像测试中，入瞳是一个十分重要的概念，有着广泛的应用。在本文中，我们就与大家一同来认识入瞳。… text/html 2026-07-09T12:45:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:%E6%88%90%E5%83%8F%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86:%E5%85%89%E5%AD%A6:%E5%87%A0%E4%BD%95%E5%85%89%E5%AD%A6:%E6%99%AF%E6%B7%B1&rev=1783601150&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Depth of Field I. Concept of Depth of Field Before taking a picture, the camera must be focused. Theoretically, only the part of the image that is accurately focused is sharp, while objects in front of and behind the focal plane gradually become blurred as they deviate from the plane of focus. Influenced by factors such as the lens and shooting d… text/html 2026-07-09T11:14:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:%E6%88%90%E5%83%8F%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86:%E5%85%89%E5%AD%A6:%E5%87%A0%E4%BD%95%E5%85%89%E5%AD%A6:%E6%9C%80%E5%A4%A7%E6%88%90%E5%83%8F%E5%9C%86&rev=1783595663&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) 最大成像圆 定义 最大成像圆（Max Image Circle，MIC）是镜头在像平面上形成的最大圆形成像区域，其直径称为成像圆直径（Image Circle Diameter）。MIC用于表征镜头对图像传感器的覆盖能力，是镜头与传感器匹配的重要光学参数。$\Phi$$W$$H$$D$$\Phi$$W$$H$$D$ text/html 2026-07-09T11:14:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:%E6%88%90%E5%83%8F%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86:%E5%85%89%E5%AD%A6:%E5%87%A0%E4%BD%95%E5%85%89%E5%AD%A6:%E9%B1%BC%E7%9C%BC_%E5%85%A5%E7%9E%B3&rev=1783595663&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) （鱼眼）入瞳 入瞳一文介绍了近轴成像时的入瞳，即假设入瞳与孔径光阑互为一对共轭的物像。这种一对一的入瞳概念适用于理想镜头或远摄（长焦、窄角）镜头。然而，如果我们观察鱼眼（超广角）镜头，会发现其入瞳位置并不是固定的，而是会随着观察位置的变化而移动，如一只眼睛一般追踪着观察者。在本文中，我们就与大家一同了解这一现象背后的机制及其对相机像质测量的影响。…