Asteria
light meter
1 Asteria: luminance / illuminance & flicker measurement device
Admesy’s Asteria light meter provides a CIE 1931 high speed luminance measurement function, targeting application for display and lighting industries. Asteria works like all Admesy products on USB and RS232 and can perform all complex calculations inside due to a high speed CPU and large internal memory. The Asteria is available with lens system or cosine corrector, for luminance or illuminance & luminous intensity measurements respectively. For remote sensing and connecting to accessories, fibre connected versions of the Asteria are available. All optical configurations are suitable for response time and flicker measurements supporting the following standards.
• Contrast min/max
•Contrast RMS
•JEITA
•VESA
•Flicker percentage (IES)
•Flicker index (IES)
•IEEE 1789
2 Highlights
• Absolute luminance and illuminance & luminous intensity measurement according to the human eye
(CIE1931 luminosity function)
• All flicker measurement standards supported for display
(Contrast, JEITA, VESA) and lighting (percentage, index)
• Measure high and low frequencies at the same time
through a high sample rate (186.567 samples/second) and large memory size
• Windows, Linux, OSX and embedded systems compatible
• SCPI command interface for easy integration in other applications
• Supported in all major programming languages Labview / Labwindows / Visual Studio (C++, C#, VB)/ Other programming languages that support VISA can be used
• USBTMC standard compliant
• Integrating- and sampling mode available
• 3 gain stages for every mode
• Auto-range function
• User calibration function and pre-programmed calibration values
• Trigger in and output for inline applications
• USB and RS232 communication interface
3 Asteria general specifications
4 Typical spectral sensitivity of Asteria light meter
5 Asteria 10mm specifications
1 Based on calculation of a sinusoidal waveform.
2 All measurements are performed 20 times on a LED LCD screen with sufficient signal noise ratio; value is based on 2 sigma. Luminance values are based on best performance possible, while measurement speed is determined by Admesy with a signal noise ratio which is still acceptable according Admesy. Sample speed depends on the measured sample as well: If the sample uses PWM it will take longer so use the lower rated values. Detailed measurement data is available upon request.
6 Asteria cosine corrector specifications
1 Based on calculation of a sinusoidal waveform.
2 All measurements are performed 20 times on a halogen lamp with sufficient signal noise ratio; value is based on 2 sigma. Illuminance values are based on best performance possible, while measurement speed is determined by Admesy with a signal noise ratio which is still acceptable according Admesy. Sample speed depends on the measured sample as well: If the sample uses PWM it will take longer so use the lower rated values. Detailed measurement data is available upon request.
7 Asteria 10mm dimensions
描述 [描述] luminance / illuminance & flicker measurement device<br />