Ocean Optics OTS User Manual
Page 15
2: Installing the OTS
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Measurement of Transmittance Procedure
1. Place a tint sample on the stage and click a
button to acquire the spectra and calculate the
color info for the sample. Up to 10 measurements may be made and compared. Average
Transmittance T(λ), Luminous Transmittance τ
v
, and the color parameters L*a*b*, along with
hue and Chroma are displayed for each measurement.
Luminous transmittance is calculated in accordance with ISO 13666:1998(E/F). L*, a*, b*, hue,
and Chroma are all calculated from the measured spectra using the D65 illuminant and 10-degree
observer.
The average and standard deviation for all data displayed are shown at the bottom of the table.
The color of the symbols in the a*-b* plot, as well as the data in the spectral transmittance plot
are shown in the column labeled
.
2. You can add details to specify laboratory, analyst, part number, lot number, etc.
3. Adjust the scaling on the charts, if desired. To do this, right-click on either chart, and then adjust
to the desired axis range for the vertical and horizontal axes of both the a*-b* and spectral
transmittance plots.
4. Delete individual data sets by clicking the Clear button pertaining to that row of data. Clear all
displayed data at once by clicking the Clear All button.
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