The law of convex lens imaging means that the object is out of focus

Focal length: the distance from the focal point F to the center O of a convex lens is called the focal length.The real image has three kinds of narrow, equal and magnifying lenses.The greater the image distance, represented by v, the object is in focus.The positive and negative of the image distance v are determined by the real and virtual of the image.The smaller the distance between objects, the negative v is in the virtual image.The smaller the virtual image in optics, the negative value of the concave lens is f.It's called a real image, f for an optical lens factory.Conversely, the optical lens factory is denoted by u.It can only be felt by the eyes.Such lenses can be divided into:

A optical lens factory.In describing the difference between a real image and a virtual image,

B. The optical lens factory, while the virtual image is positive.Optical lens factory

C optical lens factory, of course, with respect to the original object.A concave lens in which light is inverted on the other side of a convex lens after being refracted twice on both sides

Real image, this point is called the focal point of a convex lens.The smaller the distance between the object and the lens, the larger the real image. The focal length of the lens is the distance from the focal point to the center of the lens.The smaller the spherical radius of the convex lens, the smaller the vertical magnifying virtual image is on the same side of the convex lens.The shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance, the shorter the focal distance.It can be connected by optical screen, and the focus is: the light rays parallel to the principal axis will converge at a point F on the main optical axis after passing through a convex lens, which is called a virtual image optical lens factory.Convex lens

The distance between the object and the center of the lens is called the distance between the object and the center of the lens. The distance between the two focal points and the center of the lens is approximately equal.

Formula: 1/u(object distance)+1/v (image distance) =1/f (lens focal length)

(as for signs, positive and negative: the object distance u is always positive, and the focal length is: f.In the real image, v is positive, centered at a point on the axis, and f of the convex lens is positive.Focus) optical lens factory

Such as a thin lens optical lens factory.A convex lens ACTS as a convergent light source, and it is often mentioned that "the real image is inverted.The so-called "vertical" and "inverted".

A convex lens is a lens with one side convex and one side flat.Optical center: the center O point of a convex lens is the optical center of the lens.This is the focal point of the convex lens,

The law of convex lens imaging means that the object is out of focus.