Lenses

 Lenses

Introduction: In the case of refraction from a plane surface, it is found that an image of the object is seen at a different location. Let us focus on images formed due to spherical surfaces. In order to study the formation of an image due to a spherical surface, we use an optical instrument like lenses. This lens is transparent materialsmediums made up of different materials (glass/fiber/splint glass/ crow glass).

Lens

Lens: It is a transparent material made up of the intersection of two spheres of radius R₁and R_2.

 The most commonly used lens is 

1) Convex lens: A lens that is thicker in the middle and narrow towards the periphery is called a convex lens.

Convex lens

2) Concave lens: A lens that is narrow in the middle and thicker towards the periphery is called a concave mirror.

Concave lens

Different  types of lens that are also available for various application is as shown in figure below

_{│<<< Refraction from plane surface│   │Refraction from single curved surface>>>│}

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Related Topics: Introduction to optics   Laws of reflection    Sign Convention  Reflection from plane surface   Spherical Mirror   Image formed in Concave mirror   Spherical Abberation  Refraction   Refractive Index    Refraction from plane surface   Lenses  Refraction from Curved surface  Lens makers Equation  Dispersion Of Light  Prism Formula