“眼和视觉”·“发电机”复习导航

• 作 者: 张北春
• 机 构: 安徽怀宁县高河中学,
• 出 处: 数理化解题研究(初中版)
• 发表日期: 2004年期
• 关键词: 磁感线 透镜成像 光路图 物距 异侧 光心 面部特征 人脸识别系统 观察范围 光学仪器

一、“眼和视觉”复习考点1:考查透镜光路图平行于主光轴的光线经凸透镜后会聚,过异侧的焦点;经凹透镜后发散,反向延长线过同侧的焦点.利用光路的可逆性分析上述光线得出;从焦点发出的光线过凸透镜后平行于主光轴;射向凹透镜另一侧焦点的光线过凹透镜后与主光轴平行.不管是凸透镜还是

First, “eye and vision ” Review test site 1: examine the optical path of the lens parallel to the main optical axis of light through the lens after the convergence, the opposite side of the focus; divergent after the lens through the lens, the reverse extension of the line through the same focus. Using the optical path of the reversibility analysis of the above-mentioned light come out; from the focus of the light through the lens after the parallel to the main optical axis; the other side of the lens into the focus of the light after the concave lens parallel to the main optical axis. Whether convex lens or