论文标题
使用智能手机摄像头来通过找到对象的虚拟图像的横向放大倍率来确定薄镜头的焦距
Use of a smartphone camera to determine the focal length of a thin lens by finding the transverse magnification of the virtual image of an object
论文作者
论文摘要
在这项工作中，我们通过通过智能手机相机拍摄对象的虚拟图像来确定凹形镜头的焦距。我们同样通过形成对象的虚拟图像将其在距离镜头的焦距内部的虚拟图像来确定凸透镜的焦距。当智能手机拍摄照片时，可以通过互联网自由使用的软件来读取相机传感器上图像的横向宽度。通过从相机的两个位置拍摄虚拟图像的照片，沿着相机的视线距离距离，我们确定了虚拟图像的横向宽度。由此，我们发现镜头的焦距知道横向宽度和物体与镜头的距离。
In this work we have determined the focal length of a concave lens by photographing the virtual image of an object by a smartphone camera. We have similarly determined the focal length of a convex lens by forming a virtual image of an object keeping it within the focal distance from the lens. When a photograph is taken by a smartphone, the transverse width of the image on the sensor of the camera in pixels can be read off by software available freely from the internet. By taking a photograph of the virtual image from two positions of the camera separated by a distance along the line of sight of the camera, we have determined the transverse width of the virtual image. From this we find the focal lengths of the lenses knowing the transverse width and the distance of the object from the lenses.
