Thin Film > English > Technical Infomation > FORMULAS for OPTICAL THIN FILM
FORMULAS for OPTICAL THIN FILM

1.Single side reflectance of substrate(in the air)
2.Dual sides reflectance of substrate ( in the Air)
For dual sides reflectance, it is necessary to consider multiple reflection in the substrate.
3.single side refelectance of single layer film
4.Finding index coefficient of the thin film from single side reflectance of single layer
5.Characteristic Matrix of Multi-layerd thin film (Herpin's Matrix)


6.Finding index number of substrate from single side reflectance(in the air) of the substrate
7.Finding index number of substrate from single side reflectance(in the air) of the substrate
8.UNIT CONVERSION
(1)TRANSMITANCE(T%) OPTICAL DENSITY(D)


(2)OPTICAL DENSITY(D) TRANSMITANCE(T%)


(3)TRANSMITANCE(T%) DECIBELL(dB)


(4)DECIBELL(dB) TRANSMITANCE(T%)


(5)Torr Pa


(6)Pa Torr