Optical probe achieves 75-µm measuring spot

MAY 4, 2009--The TOP 200 telescopic optical probe permits precise measurements of radiance and luminance, as well as chromaticity of displays, panel graphics, and other light sources in conjunction with a spectrometer.

May 4th, 2009

MAY 4, 2009--The TOP 200 telescopic optical probe permits precise measurements of radiance and luminance, as well as chromaticity of displays, panel graphics, and other light sources in conjunction with a spectrometer. The probe features a Pritchard style optical design with integrated view-finder camera and an aperture mirror angled at 15°. The internal camera allows the field of view to be visualized at the PC. A series of interchangeable lenses and software-controlled apertures accommodate a range of distances and measuring-spot sizes. The smallest measuring spot can be achieved with the high-resolution objective lens HRL-90 at 75 μm in diameter. Light radiation is guided to the spectrometer along a multimode fiber. The patented mode mixer delivers uniform light transmission in the fiber to facilitate reproducible measuring results, even if fiber position changes. Measuring error is less than 1%, compared with up to 20% without mode mixer.
Instrument Systems
Munich, Germany
www.instrumentsystems.com

-- Posted by Carrie Meadows, Vision Systems Design, www.vision-systems.com

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PRESS RELEASE

Telescopic Optical Probe

Improved Telescopic Optical Probe achieves new precision in display measurement

The new TOP 200 Telescopic Optical Probe from Instrument Systems has now been launched on the market. In combination with a spectrometer, the TOP 200 permits precise measurements of radiance and luminance, as well as chromaticity of displays, panel graphics and other light sources. The core of the innovations compared with the previous model is a Pritchard style optical design with integrated view-finder camera and an aperture mirror angled at just 15°. This setup p rovides a perfectly round and sharp measuring spot for maximum accuracy. The internal camera allows the field of view to be visualized at the PC. It thereby facilitates exact positioning of the TOP 200 and focusing on the defined measuring spot.

A series of easily interchangeable lenses and software controlled apertures accommodate a large range of distances and measuring-spot sizes. The smallest measuring spot can be achieved with the high-resolution objective lens HRL-90 and is only 75 μm in diameter.

The light radiation is guided to the spectrometer along a multimode fiber. The patented mode mixer from Instrument Systems delivers uniform light transmission in the fiber and thereby facilitates reproducible measuring results, even if the position of the fiber is changed. The measuring error is below 1% compared with an error of up to 20% without mode mixer.

Company Profile of Instrument Systems GmbH
Instrument Systems is one of the leading manufacturers for LED and display measurement systems based on spectroradiometers. The company delivers a comprehensive range of light measuring products for industrial and research applications. These include highperformance array and scanning spectrometers as well as imaging photometers and colorimeters. All instruments provide accurate and reliable results as per CIE recommendations.

The company was founded in 1986 and is based in Munich, Germany. Instrument Systems provides support for the global customer base with backup from a comprehensive network of representatives.

www.instrumentsystems.com

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