Static law of convex lens imaging

The static laws of convex lens imaging mainly include the following points: the dividing point between real image and virtual image: the virtual image is within a focal length, and the real image is outside a focal length. The demarcation point of the size image of the double focal length: the image outside the double focal length is the enlarged image in the double focal length.

The real image and the object are on the same side of the lens and inverted, while the virtual image and the object are on the same side and upright. These laws can be understood and remembered by the principle of convex lens imaging. For example, when light passes through a convex lens, it will be refracted and focused on the focus, forming a real image or a virtual image. At the same time, the relationship among object distance, image distance and focal length will also affect the size and position of imaging.

It should be noted that the static law of convex lens imaging is based on the specific relationship between object distance, image distance and focal length, and these relationships may be affected by different light conditions and object levels. Therefore, when doing problems or practical applications, it is necessary to analyze and calculate according to specific conditions.

The main functions of convex lens imaging are as follows:

Real image: the convex lens can make the object form a real image on the other side, which is equivalent to the lens of a camera and can record and shoot the image of the object. Virtual image: the convex lens can also make the object form a virtual image on the other side, which is equivalent to a magnifying glass, which can enlarge the details of the object and help people observe and identify the object.

Focusing: The convex lens can focus the light on the focal point to concentrate the light energy, thus improving the brightness and clarity of imaging. Correcting vision: convex lens can correct vision problems such as myopia and hyperopia, so that people can see far and near objects more clearly. Photography and projection: convex lens is widely used in photography and projection, which can control the direction and shape of light and improve the quality and effect of imaging.