# What is the formula of lens maker formula?

## What is the formula of lens maker formula?

Lens maker’s formula is the relation between the focal length of a lens to the refractive index of its material and the radii of curvature of its two surfaces. It is used by lens manufacturers to make the lenses of particular power from the glass of a given refractive index.

## What are the 2 types of lens?

The two most common types of lenses are concave and convex lenses, which are illustrated below in Figure 1.

Why is it called lens maker formula?

It is a relation between the focal length of a lens to the refractive index of its material and the radii of curvature of its two surfaces. It is so called because it is used by lens manufacturers to make lenses of particular power from the glass of given refractive index.

### What is a lens in physics?

A lens is a piece of transparent material that is shaped so as to cause light rays to bend in a specific way as they pass through it, whether that means making the rays converge to a specific point or to diverge as if from a specific point.

### What are the 3 types of lenses physics?

Types Of Lenses

• Cylindrical – curvature in one direction.
• Fresnel – narrow ring-like surface.
• Lenticular – a group of micro-lenses.
• Gradient Index – flat surfaces but with varying refractive indices.
• Axicon – conical surface.

What is the difference between mirror formula and lens formula?

Difference Between Lens and Mirror. The lens is a material made of glass or plastic bounded by two surfaces. It can either be curved at one side or both sides. The mirror implies a glossy surface at one end and produces an image of an object by reflection.

## Who gave mirror formula?

Let’s explore the mirror formula (1/f = 1/v+1/u) and see how to locate images without drawing any ray diagrams. Created by Mahesh Shenoy.

## Is U positive in concave mirror?

Since as object is always placed to the left side of a mirror, therefore, the object distance (u) is always negative. If the image is formed behind a concave mirror, the image distance (v) is positive but if the image is formed in front of the mirror , then the image distance will be negative.

What is lens maker formula?

Lens maker’s formula is the relation between the focal length of a lens to the refractive index of its material and the radii of curvature of its two surfaces . It is used by lens manufacturers to make the lenses of particular power from the glass of a given refractive index.

### What is a thin lens equation?

1 s + 1 s ‘ = 1 f {\\displaystyle {1 \\over s}+{1 \\over s’}={1 \\over f}} , which is known as the thin lens equation.

### What is a lens equation?

lens equation. [′lenz i‚kwā·zhən] (optics) Any equation which relates the distance of a point object from some well-defined reference point in an optical system to the distance of its image from a similar point.

What is a lens maker?

• LENS MAKER (noun) The noun LENS MAKER has 1 sense: 1. a worker who makes glasses for remedying defects of vision. Familiarity information: LENS MAKER used as a noun is very rare.