No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
Motionless system to measure relative angular emission intensity of decaying or modulated light emitting diodes
2. CIE 127:2007 Measurement of LEDs (Commission internationale de l'clairage, 2007).
3. High Accuracy Ambient Light Sensor - Datasheet SFH 5711 (Osram Opto Semiconductors GmbH, 2007).
5. Datasheet White LED, E1L33-AW0A2 (Toyoda Gosei, 2007).
Article metrics loading...
In this paper, a measurement system is presented which enables fast and accurate determination of the relative angular emission intensity of light emitting devices, taking into account their specific features such as low light output, narrow spectral distribution, high spatial luminous intensity ratios, and small dimensions. Application of logarithmic sensors allows for fast measurement of relative emission by simple analog circuitry, while locating 18 of them on a fixed ring around the emitter allows a motionless measurement system. As a result, the proposed system can determine the relative angular emission in less than 100 ms with a resolution of 5° for symmetric emitters.
Full text loading...
Most read this month