'Normal' lenses work by *re*fraction, the bending of the light path
caused by the different refractive indices of glass and air.
*dif*fraction is the change in light path caused by passage of light
through slits or apertures - only significant when the size of the slit
or aperture is comparable to the wavelength of the light.
Roger
Piers Hemy wrote:
> Diffraction lenses work tautologically. ;-)
>
> Isn't that how *any* lens works, by diffraction of the light rays?
>
> Or have I forgottem the Optics that Fred Winterbottom taught me as a
> teenager?
>
> Piers
The olympus mailinglist olympus@xxxxxxxxxx
To unsubscribe: mailto:olympus-request@xxxxxxxxxx?subject=unsubscribe
To contact the list admins: mailto:olympusadmins@xxxxxxxxxx?subject="Olympus
List Problem"
|