Software Documentation
Image Engineering
lightSTUDIO
11
Illuminant creation:
Illuminants are the essential basis for illuminating the LED lightHEAD. They consist of a relative power
spectral distribution in the visual range from 380 nm to 780nm and an illuminance value (measured in
cd/m
2
or lux) . These illuminants can be saved as files and loaded if they were generated with other
Image Engineering software, like iQ-LED .
Illuminants can be imported for the use in the lightSTUDIO software. Click
Import
…
[6] and select
.iqilluminant
files for import.
Individual illuminant creation:
1) For the creation of a new illuminant select a desired standard spectrum with menu [7].
Available are: 3200BB (imitation of black body radiator with 3200 K), A, B, D50, D55, D65
D75, F2, F11, F12. For more details on standard illuminants see Image Engineering website
(go to Library /Technotes/CIE standard illuminants).
It is possible to create individual spectral distribution files. Open a sample file in the directory
of the software: C:/Program Files/Image Engineering/lightSTUDIO<Version number>/spectra
with a text editor. You may create a text file with the same formatting and you own spectral
distribution. The intensity values in the second column may be scaled relative (0
…
1) or in
absolute values. The wavelength values must be scaled in 5 or 10 nm increments in the range
300 – 830 nm, the range may be smaller but not greater. Store the new file in the same
directory; after restart of the lightSTUDIO software the new file will be listed in the menu with
the name as entered in the tag “NAME”.
The selected spectral distribution is displayed [8].
2) Enter a desired illuminance value [9]. The value
refers to the position defined in the lux
measurement described above.
3) Click
Verify value
[10]. The software verifies if the desired illuminance value can be achieved
with the selected spectral distribution. If this aim cannot
be reached the maximum achievable
illuminance value is returned.
4) Click
Create illuminant
[11]. This procedure takes several seconds and stores
the illuminant
permanently. The illuminants are available for use in the corresponding module (
chapter
4.5.3.2
).