CIE standard daylight simulators
We provide two types of CIE standard daylight simulators at
different phases (5000K - 7500K):
1. Incandescent lamp with colored glass filters,
2. Xenon arc lamp with colored glass filters, and
The most useful daylight simulator is D65 operating at the color
temperature 6500K. D50 is the standard daylight simulator for the graphic
arts industries. It may be used for museum lighting purpose. Xenon daylight
simulator, although very expensive, is the best for simulating CIE standard
illuminant from UV to the visible spectral range. Incandescent daylight
simulators have high metamerism index in the visible wavelength range and
low cost.
Specifications:
1. Incandescant Daylight Simulators:
Color Temperature: 5000K, 5500K, 6500K and 7500K.
Metamerism Index MIvis: B or better.
Color Rendering Index: >95
US Patent 7,378,784
2. Xenon Arc Daylight Simulators:
Color Temperature: 5000K, 5500K, 6500K and 7500K.
Metamerism Index MI: AB or better.
Color Rendering Index: >95
LiuLabs
Daylight for Color Grading of Gemstones
The
LiuLabs Daylight is a new type of daylight simulator. The LiuLabs Daylight consists
of a halogen lamp and a series of filters (two or more filters are arranged
in serial) to simulate the northern window daylight for color
grading of gemstones as well as for colorimetric purposes. The metamerism
index of the new daylight simulator is MIvis B or better in the visible
range, and the spectral power distribution matches that of the CIE standard
daylight D65 very well. Figure 1 shows the spectral power distribution of
the new filtered halogen daylight simulator.
Figure 1. The spectral power
distribution of the LiuLab Daylight simulator.
We provide two types of the
LiuLabs Daylight D65 daylight simulators: 1. Task light, and 2. Project light.
The task light is used on desk or clipped on shelf, and the project light is
for lighting in a color grading room. Figure 2 shows the two types of LiuLabs D65 daylight simulators.
Figure 2. Two types of the
LiuLabs daylight sources: A. task light, and B. project light.
The LiuLabs Daylight D65
daylight simulator meets all ASTM, ISO, CIE standards for the D65 daylight
simulator, and it is the only commercial available daylight simulator that
meets the requirement of metamerism index B or better in the visible range
for color grading and color matching in the world.
The LiuLabs CIE daylight simulators can
also be used for other colorimetric applications, such as color matching,
color observation, color grading and etc.
Specifications:
Color Temperature (Tc): 6500 +/-300 K
Metamerism Index in the Visible Wavelength Range (MIv): B or Better
Color Rendering Index (CRI): > 95
Illumination Level: 540 - 2150 lx
Beam Angle: 12, 24 and 36 degrees
Average Life: 4000 hours
US Patent 7,378,784
Note: The quality of daylight simulators shall be assessed by the
metamerism index. Color Rendering Index is not recommended for assessing the
quality of daylight simulators by ASTM, CIE and ISO.
Liu
Research Laboratories, LLC
