more in depth read on lenses here: https://medium.com/photography-secrets/lenses-e033d2f77548
anon01
Is this calculated based on Snell's law?
sc2019
I don't think you can use Snell's law directly for a lens since it will have some internal reflection and Snell's law only computes reflection/refraction for a boundary. Lenses also have different focal lengths which affect where the rays go. Here is some more information about computations for lenses: http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/lenscon.html#c1
Gyro
So the reason why camera cannot be made very small is because we need to use so many lens to control the incoming light?
more in depth read on lenses here: https://medium.com/photography-secrets/lenses-e033d2f77548
Is this calculated based on Snell's law?
I don't think you can use Snell's law directly for a lens since it will have some internal reflection and Snell's law only computes reflection/refraction for a boundary. Lenses also have different focal lengths which affect where the rays go. Here is some more information about computations for lenses: http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/lenscon.html#c1
So the reason why camera cannot be made very small is because we need to use so many lens to control the incoming light?