Since it is possible to manufacture
LEDs in a wide variety of colors and brightness (now including blue and
white) it is also necessary to accurately measure their optical characteristics.
Spectrometers from Instrument Systems test luminous intensity, luminous
flux, dominant wavelength and color coordinates. These systems are suitable
for either R&D applications or production testing. We also manufacture
and stock a comprehensive range of test fixtures for all major LED packaging
designs.
As the world leader in measuring the optical properties of LEDs, Instrument Systems offers years of experience, innovative test accessories, and integration
with high-speed handlers for production testing.
The SPECTRO
320 scanning spectrometer is used by major LED
manufacturers for research and development of the latest LED technology
and for maintaining in-house calibration standards. For production testing,
the CAS140B
CCD detector based array spectrometer, offers the high sensitivity and
fast measuring times necessary.
(Accessory for LED measurements)
Spectrometers from Instrument Systems accurately test LEDs in accordance to CIE standards without the need for color-specific re-calibration as is necessary when using photometers.
Demands
on displays are becoming more exacting in the communications age. These
devices are used for visualizing important information in industry as well
as in public and private life (computers, automotive engineering and avionics).
Instrument Systems makes sure that both the radiance/luminance and chromaticity
are correct. A special configuration of the DTS series of instruments can
test night vision compatible displays according to MIL-L-85762A.
Giant is very excited
to introduce the latest generation of the DTS140-211
for display testing in the automotive, aerospace,
and FPD markets. For this investment level, this system is absolutely
unrivalled and you are encouraged to compare its performance with products
from our competitors.
Are you manufacturing/using the same old displays - then why use the same old spectrometer/photometer based on outdated technology? These are the benefits you get from the DTS series:
- the new Windows software, IS-SpecWin (see the Products section), is feature packed and also supports many other applications described in this section to boost your productivity.
- the DTS140 uses a spectrometer based on a scientific-grade, back-illuminated CCD detector that is Peltier cooled to -10oC. This means superb sensitivity and fast measurements.
- the DTS320 scanning spectroradiometer offers the highest accuracy and dynamic range. It is the recognized reference system in the automotive industry that no competitor can match.
For NVIS display testing, the DTS320-201 represents state-of-the-art technology.
Using a unique approach, engineers have created a system that not only
meets or exceeds all required specifications - it is also extremely fast
and is the only truly portable system on the market. Combine this with
the flexibility of a fiber-optic coupled telescope head, and you have
a system that can do measurements in a real environment (i.e. inside a
cockpit).
For sure, there are cheaper and less advanced systems on the market, but the DTS320-201 offers by far the best value in terms of price/performance and overall productivity. For example:
- the powerful, new Windows software, IS-SpecWin, offering built-in
- spreadsheet that dynamically links to measurement data
- report template writer for custom reporting
- automation module to control other instruments and positioners
(via .dll)
- MIL-L-85762A nomenclature, with editable chromaticity and luminance targets for pass/fail analysis - the modular/fiber-optic approach that allows you to also make calibrated measurements with other accessories such as goniometers, integrating spheres, etc
- real portability
A New Generation of NVIS Spectroradiometers Combining Speed, Sensitivity and Portability
Spectroradiometry is the calibrated
analysis of light from radiant sources, e.g. the sun, lamps and other
light sources. Photometry involves measurement of radiation visible to
the human eye. We deliver test setups for precise measurements of all
existing radiometric, photometric and colorimetric parameters. Applications
include both R&D and quality assurance in the lighting industry, metrology
labs, environmental research, etc.
The systems necessary to support these applications are created by linking the appropriate Accessory to a spectrometer using an optical fiber guide.
|
Light source |
Accessory |
Radiometric unit |
Photometric unit |
|
Tungsten halogen lamp |
Integrating sphere |
Radiant power |
Luminous flux |
|
LED |
LED adapter |
Radiant intensity |
Luminous intensity [cd] |
|
Sun |
External optical probe |
Irradiance |
Illuminance |
|
Display |
Telescope head |
Radiance |
Luminance |
Spectrophotometry is the measurement
of transmission and reflection. The applications for this type of analysis
are wide-ranging. Solutions from Giant are found in research
(e.g. reflectivity of solar cells), industrial quality assurance (e.g. coatings
for filters and mirrors) and consumer-goods testing (e.g. sun glasses, metallic
paints).Giant sells a goniometer for specular transmission and reflection and a range of integrating spheres for diffuse transmission and reflection.
A sophisticated system sold
by Giant analyzes the polarization properties of light sources,
sensors, optical fibers and components. It is also essential for quality
assurance and production control of stress birefringence in the manufacture
of glass and lenses. The RPA2000 Real-time Polarization Analyzer is being used around the world for general polarization measurements in telecommunications and optical components. It allows fast and precise measurement of all 4 stokes parameters. Results are displayed in a user-friendly form using an ellipse diagram and Poincaré sphere.
The PCT2000 Polarization Component Tester is used by manufacturers of optical components destined for lithography machines that need to accurately determine stress birefringence. It is also being used for production testing of waveplates - delivering independent, reproducible and fast results. Further applications include Jones and Mueller Matrix determination of reflective polarizers using goniometric measurements (both in reflection and transmission).
The RPA2000 allows fast and precise polarization analysis. Results are displayed in a user-friendly form using an ellipse diagram and Poincaré sphere.
