COCO OPTICS
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26
2023
-
04
What is the definition of a lens and what is a lens?
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There are six types of lenses. A lens is made according to the laws of light refraction. A lens is an optical element made of transparent substances such as glass, crystal, etc. A lens is a refracting mirror with two spherical surfaces, or a transparent body with one spherical surface and one plane. The image it forms has both real and virtual images. Lenses can generally be divided into two categories: convex lenses and concave lenses. The central part is thicker than the edge part and is called a convex lens, which has three types: biconvex, flat convex, and concave convex; The central part that is thinner than the edge part is called a concave lens, and there are three types: double concave, flat concave, and convex concave. Convex lenses have the function of converging light lines, so they are also called "converging lenses" or "positive lenses" (can be used for farsightedness and reading glasses). This type of lens can be divided into: a. biconvex mirror - a lens with both sides ground into convex spheres; b. Flat convex lens - a lens with one side convex and one side flat; c. Convex convex lens - a lens with one convex side and one concave side. Concave lenses have the function of diverging light, so they are also called "diverging lenses" or "negative lenses" (can be used for myopia glasses). This type of lens can be further divided into: a. biconcave lens - a lens with two sides; b. Flat concave lens - a lens with one concave side and one flat side; c. Convex concave lens - a lens with one side convex and one side concave. 3. Thin lens - A lens with a central thickness that is relatively large compared to the curvature radius of its two sides. In the early days, cameras were only equipped with a convex lens, hence the name "single lens". With the increasing development of technology, modern lenses have several different forms and functions of convex and concave lenses to form a converging lens, known as a "compound lens". The concave lens in a compound lens serves to correct various aberrations.
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Latest News
2023-04-26
Differences and laws of lenses
Different structures A convex lens is composed of a transparent mirror body ground into a spherical surface on both sides, with thin sides and thick middle.
2023-04-26
Classification of lenses
Convex lens A convex lens is a lens with a thicker center and thinner edges. Convex lenses have the function of converging light lines, so they are also called "converging lenses" or "positive lenses" (can be used for farsightedness and reading glasses). This type of lens can be divided into:
2023-04-26
What is the definition of a lens and what is a lens?
There are six types of lenses. A lens is made according to the laws of light refraction. A lens is an optical element made of transparent substances such as glass, crystal, etc. A lens is a refracting mirror with two spherical surfaces, or a transparent body with one spherical surface and one plane. The image it forms has both real and virtual images. Lenses can generally be divided into two categories: convex lenses and concave lenses.
2023-04-26
Lens knowledge points
Magnifier: A convex lens with a short focal length that can magnify smaller objects, but the object must be within one focal length of the convex lens, presenting a magnified upright virtual image
2023-04-26
Summary of Lens and Its Application Knowledge Points
1. Convex lens: A lens with a thick center and thin edge, which has a converging effect on light, so it is also called a converging lens.