Where do i go to know if the lenses on a digital camera are convex or concave?

Question

For my science project i have to know what forms a digital camera and how a digital camera works and i have to know if the lense is a convex or concave lense!!!!

Answer 1

This wikipedia article has some basics about lens and camera design: http://en.wikipedia.org/wiki/Single-lens_reflex_camera
This one goes into a bit more detail regarding lenses: http://en.wikipedia.org/wiki/Lens_(optics)
Please note that camera lenses are made up of several layers of glass. Zoom lenses can have over a dozen layers of glass - and every glass element has a 2 sides. Some of these surfaces are convex (they bulge outward), some are concave, and some can be aspherical (they start out convex, but then have a concave dimple.) On the whole, when you add up the effect of all of the glass elements, camera lenses are usually convex.

Answer 2

I go alone with OMG, but you must remember that every lens is different and made up of differing numbers of elements (as each piece of glass is called). Lenses for a DSLR will be much more highly developed than a lens for a simple compact. That is likely to be a simple triplet lens with the first element convex at the front and concave on its rear , another elements in the middle which may well be convex on the front and flat on the back and a final element which is convex on both surfaces. Many styles of lenses have been developed over the years of photography, now with the aid of CAD.

Answer 3

go to google
type in key words
go from there