Favorite Lens Maker Formula For Convex Lens
Consider a thin convex lens of focal length f RI n placed in air as shown in fig.
Lens maker formula for convex lens. Lenses of different focal lengths are used for different optical instruments. The derivation of lens maker formula is provided here so that aspirants can understand the concept more effectively. The lens makers equation is another.
A ray OP incident at p after refraction emerges along QI. Let R 1 R 2 are the of curvature of the surfaces ABC ADC of the respectively. 1 recommendation Published in Blogs Physical Science.
Show the part of this ray after reflection in each case. The radii of curvature here are measured according to the Cartesian sign convention. This is so-called as the formula helps lens manufacturers in finding the radii of curvature of the required lens.
Applying the equation above written for surface 1. 1lens maker formula2AssumptionsThin lens Small apperature point object Angles are small3Refraction at single spherical surface4It is the relat. Please comment if you have any questions or comments.
Derive lens makers formula for a biconvex lens. Note that the minus sign in front of R is due to the sign convention used when deriving the thick lens equations. Derive lens makers formula for a thin convex lens.
To derive this formula we use the following sign conventions. The image formation can be seen in two steps the first refracting surface form an image I 1 which act as a virtual object for the second surface. The combination acts as.