She stopped before him and he could see her anxiety behind the thin lenses.

These factors results in a thinner lens which is not lighter than the original.

Another simple example is that of a thin lens.

This later evolved into a thin lens, with designs on one or both faces.

A further benefit is that when relatively thin lenses are placed close together their powers approximately add.

The power of a thin lens in air is given by the Lensmaker's formula:

Thin lenses produce focal points on either side that can be modelled using the lensmaker's equation.

For a thin lens in air, the principal planes both lie at the location of the lens.

The fossils were found in coarse fluvial deposits that form thin lenses along the bank of the river.

A relatively thin lens and relatively dilated pupil are also associated.

Besides, the effect of the propagation in thin lens acts as a chirp multiplication.

These are typically designed to give a thinner lens, and also distort the viewer's eyes less as seen by other people, producing better aesthetic appearance.

These thin lenses are implanted permanently into the eye to help reduce the need for glasses or contact lenses.

If d is small compared to R and R, then the thin lens approximation can be made.

Since 1/f is the power of a lens, it can be seen that the powers of thin lenses in contact are additive.

The overall focal length of the doublet f is given by the standard formula for thin lenses in contact:

These are printed on the back of a piece of plastic, with a series of thin lenses molded into the opposite side.

The total aberration of two or more very thin lenses in contact, being the sum of the individual aberrations, can be zero.

"Every year there is new technology," Ralph Mastrorocco said, "thinner lens, flexible frames.

So named by FIDS because thin lenses of coal occur there.

High-index plastics allow for thinner lenses.

The high refractive index is useful for lens making, since a given focal length can be achieved with a thinner lens.

This image is located at the conjugate distance to the lens according to the thin lens equation:

The derivations of the ray matrices of a convex spherical mirror and a thin lens are very similar.

The connection between spatial and angular bandwidth in the far field is essential in understanding the low pass filtering property of thin lenses.