The FilmStar MEASURE
fee covers all supported instruments. Program
modes include
- Transmittance (optical density)
- V (relative) reflectance
- VW (absolute) reflectance
Data file types include
- Sample...scan of coated part
- Baseline...scan of black sample,
usually 0%
- Reference...transmittance of empty
sample holder, reflectance of uncoated optic, etc.
- Standard...known values
corresponding to reference scan
Data files may be loaded from disk,
scanned or replaced by constants where appropriate. During
data acquisition results are plotted on-screen in
spectrophotometer units (usually 0-100%); final reduced
values are displayed in physical units. Spectra can be
utilized in DESIGN and INDEX for inverse synthesis.
Scan range is defined by wavelength/
wavenumber minimum, maximum and interval. In addition a
Wave List can be specified; this is useful for filters
with varying characteristics in different bands, i.e.
broad-band blocking in two regions and narrow band
transmission in another. The Wave List is also useful for
devices whose specifications are defined at particular
laser wavelengths.
Supported formats for measured
data files include
- .csv, comma-separated values (
Excel-compatible)
- .dx, J-CAMP spectroscopy format
- .spc,
Galactic Industries GRAMS format
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