Encyclopedia > Optical density

  Article Content

Optical density

Optical density (OD): For a given wavelength, an expression of the transmittance[?] of an optical element.

Note 1: Optical density is expressed by log10(1/T ) where T is transmittance.

Note 2: The higher the optical density, the lower the transmittance.

Note 3: Optical density times 10 is equal to transmission loss[?] expressed in decibels, e.g. , an optical density of 0.3 corresponds to a transmission loss of 3 dB.

Source: from Federal Standard 1037C and from MIL-STD-188



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Christiania

... disambiguation page; that is, one that just points to other pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix ...

 
 
 
This page was created in 27.8 ms