Image Engineering lightSTUDIO, User Manual, Page: 3 / 21

Introduction
Image Engineering lightSTUDIO 3
1 I
NTRODUCTION
lightSTUDIO is a light box for the illumination of a scene with different standardized light types.
There are two types of light heads available, the Standard lightHEAD and the LED lightHEAD. The
basic version contains six light sources: F11 (4000 K), F12 (3000 K), D50 (5300 K), D65 (6500 K),
Halogen, and Halogen with blue filter (10000 K). All light sources can be dimmed from 1-100% to set
an appropriate light level. The LED version uses 20 narrow band and two white LED channels for the
creation of almost every desired spectral distribution. A spetroradiometer provides feedback to the
control software in order to ensure a reliable reproducibility of spectra and intensities. Spectral
distributions can be changed rapidly within 25 ms.
lightSTUDIO-M is an extension with two moving targets, a horizontally moving frame, which can be
equipped with any kind of test chart and a rotating plate on the back wall, which can also carry
different kinds of round test charts. The velocity of both moving options can be varied over a wide
range.
The HDR option adds the capability to generate high contrast scenes in the center part of the back
image. Two LG2 ligth boxes can hold different transparent test charts, which can produce a contrast
ratio of 10.000:1 when the surrounding illumination is dimmed.
All variants of lightSTUDIO are equipped with interior objects which represent a wide range of real-
world situations. Amongst these is, for example, a ColorCecker for measuring the color reproduction
and the white balance.
lightSTUDIO can be controlled in all its combinations by a software using a USB connection to a
Windows PC. The Standard lightHEAD is also controllable with a panel on its front side.
Notes for reading this manual:
Numbers in square brackets [ ] in the text refer to the red numbers in the images.
Text in
italics refers to labels on control elements of the software.
Definition:
The term illuminant in the context of the lightSTUDIO is used as follows: The combination of a
relative spectral response curve (predefined or measured) and an illumination value in lux,
which is achieved at a dedicated position in the light box. This information is saved in a
proprietary file format with file ending .iqilluminant. Illuminants must be generated before the
LED lightHEAD can be used.