Perfect Lens Maker's Formula Derivation

Lens makers formula is used by the lens manufacturers for manufacturing of the lenses having the desired focal length.

Lens maker's formula derivation. This formula is true for concave lens also. Write the basic assumptions used in the derivation of lens makers formula and hence derive this expression. This is called the lens makers formula because it tells what curvature will be needed to make a lens of desired focal length.

Amansinha1253 amansinha1253 25092020 Physics Secondary School 5 pts. V distance of the image from the lens. The Lens Makers Formula Lens manufacturers use the lens makers formula to manufacture lenses of the desired focal length.

Basic assumptions in derivation of Lens-makers formula. 1u 1v 1f. Its not mandatory but it makes the derivation.

Such rays are called paraxial rays. The Lens formula can be used to calculate the distance between the image and the lens. Derive the relation between object and image distance in terms of refractive index of the medium and radius of curvature of the surface.

The focal length of a lens depends on the refractive index of the lens and the radii of curvature. Hence obtain the expression for lens-makers formula in the case of thin convex lens. 1u 1f.

I Aperture of lens should be small ii Lenses should be thin iiiObject should be point sized and placed on principal axis. The following formula called the Lensmaker Equation is used to determine whether a lens will behave as a converging or diverging lens based on the curvature of its faces and the relative indices of the lens material n 1 and the surrounding medium n 2. Comparing equation 4 and 5 We get 1v.