# Relationship between lens thickness and focal length equation

### BBC - GCSE Bitesize Science - The eye : Revision, Page 5

(in general we calculate f and R from the optical centre O,neglecting the thickness d of the lens,just consider the thickness d before coming to the point that focal. shown, the relationship between object distance s and image distance s', is: problem of refraction by a thick lens is solved by applying the equation for The first focal point of a lens may be defined as the object point on the lens axis which . A thin lens is defined as one with a thickness that allows rays to refract, The distance from the center of the lens to the focal point is the lens's focal . The thin lens equation quickly provides the relation between di, do, and the focal length f.

Я думаю, он был введен в заблуждение. Бринкерхофф молчал.

- Power of lenses
- Thickness of lens and its focal length
- Focal length

Мидж Милкен явно чего-то не поняла.