照相机能将美丽的风光、动人的场景呈现在小小的照片上;借助投影仪,可以将小小的图片放大,让人们观看学习;借助放大镜和显微镜,我们能看清一些微小的物体;借助望远镜,我们能看到遥远的星空.同样是利用凸透镜成像,为什么成像效果不一样呢?一、照相机照相机是利用“当物体在凸透镜二倍焦距以外,经凸透镜成倒立、缩小的实像”的原理制成的,照相机 Cameras can be beautiful scenery, moving scenes presented in a small photo; With the projector, you can zoom in on a small picture, let people watch and learn; with a magnifying glass and a microscope, we can see some tiny objects; Telescope, we can see the faraway starry sky. The same is the use of convex lens imaging, why the imaging results are not the same? First, the camera is the use of camera “when the object in the convex lens twice the focal length, the lens into the inverted, reduced real” Made of the principle of the camera