UFD is abbreviation for Ultra Flat Dispersion.

LASER Diode has monochromatic wavelength distribution.

LED has wide wavelength distribution compared with LD.

Conventional spotsize of light on the recording track has been described as a function of Wavelength.

Spot size = \lambda /NA

with UFT, spotsize of light on the recording track might be corrected as follows.

spot size = \lambda^{1/5} /NA

Media and Optical system of Ultra Flat Dispersion should be given for UV LED sources.

see alsoEdit

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.