Hay dos tipos de lentes ópticas :Lente convexa y lente cóncava. La regla de imagen de lente convexa es: Si los objetos están desenfocados, the inverted real image will present in other side of convex focus, Hay tres tipos de imagen real: Tamaño reducido, del mismo tamaño, y amplificado .
Si la distancia del objeto es menor, the image distance will be larger, then the real image will also be greater;
If Objects put inside focus, the magnified virtual image will present on the same side of the focus of convex,
If the Object distance are larger, the image distance will be bigger , and the virtual image are also bigger; The Effects of concave lens is for light is emission, the imaging rules is much more complex than convex lens.
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