# Angle Of Deviation - An Optics Problem, help needed in optics

by omega360
Tags: angle, concave, deviation, lenses, optics
 P: 5 hello, how can i find out the angle of deviation for plano-concave lenses. thanks
Mentor
P: 37,637
 Quote by omega360 hello, how can i find out the angle of deviation for plano-concave lenses. thanks
Could you please provide us some background on plano-concave lenses, and how rays are traced through them? What do you think the relevant equations are for the "angle of deviation?"

Is this homework or coursework?
 Mentor P: 10,693 If you send (for example) a beam of parallel light rays into a lens (any lens, not just plano-concave ones), they come out at various angles, different angles for different rays. This is what makes lenses useful: they change the convergence or divervence of a whole collection of light rays. So, you need to be more specific. Which ray do you want the angle of deviation for?
P: 5

## Angle Of Deviation - An Optics Problem, help needed in optics

i am working on a project related to illumination and i need to diverge rays of the sun using plano concave lens. so, i need to find out how the angle of deviation relates to the curvature of the lens and the material of the lens