Five situations of convex lens imaging
2021-06-28(708)Views
In addition to the double focal length, the real image is reduced in an inverted position.
The five pictures of the convex lens imaging law are as follows:
1. In addition to the double focal length, the real image is reduced in an inverted position.
3, one-time focal length to two-time focal length, magnify the real image upside down.
4. No imaging at one-fold focal length.
5, within one-fold focal length, upright magnify the virtual image.
What the camera uses is the imaging law of a convex lens. The lens is a convex lens, the scene to be photographed is the object, and the film is the screen. The light irradiated on the object is diffusely reflected through the convex lens to form the image of the object on the final film. The film is coated with a layer of light-sensitive material, which undergoes chemical changes after exposure, and the image of the object is recorded on the film. . As for the relationship between the object distance and the image distance, it is exactly the same as the imaging law of the convex lens. When the object gets closer, the image gets farther and bigger, and finally becomes a virtual image on the same side.
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