What is a spherical lens Manufacturer of spherical lens
Spherical lens is referred to as spherical mirror for short. Its optical function is to make parallel rays form a focus F. In glasses optics, there are thin lenses and thick lenses.
A spherical mirror has two faces, both of which are spherical, or one is spherical and the other is plane. Manufacturer of spherical lens can be divided into convex lens (medium Jian thick, thin edge) and concave lens (medium Jian thin, thick edge). Convex lens can be divided into three forms: biconvex, flat convex and concave convex. Concave lens can be divided into three forms: double concave, flat concave and convex concave.
If the middle Jian of the lens is thin to a certain extent, and the optical properties of the lens are independent of its shape and lens form, such a lens is called a thin lens, that is, whether the shape of the convex lens is biconvex, flat convex or concave convex; No matter whether the shape of concave lens is double concave, flat concave or convex concave, the influence of medium Jian thickness on its optical properties can be ignored, so we can call it thin lens. At this time, the convex lens is represented by an opposite double arrow, while the concave lens is represented by an opposite double arrow.
Using the concept of thin lens will greatly simplify our calculation Manufacturer of spherical lens.
If the thickness of the middle Jian cannot be ignored, it is called a thick lens. When the lens form of a thick lens changes, such as the front and rear surfaces are bent or flattened, the overall refractive power of the lens and the refractive power of the front and rear vertices will change accordingly, Manufacturer of spherical lensand the value of the deviation can not be ignored, which is very complex in calculation Manufacturer of spherical lens.
