IEC EN 62595-2-3 Display Illumination Unit - Part 2-3: Electro-Optical Measurement Methods for LED Front Light Unit

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of IEC EN 62595-2-3 testing. IEC EN 62595-2-3 specifies standard measurement conditions and measurement methods for determining the electrical, optical and electro-optical properties of LED front light units (FLUs) for reflective displays.

The gloss meter (a spot meter or an imaging meter) would be equivalent to the human eye. The equipment must be calibrated to gloss standards and carefully checked before measurement, taking into account the following:

• The sensitivity of the measured quantity to the measuring light;
• Errors due to screening flare and lens flare (ie, stray light in the optical system);
• Timing of data collection, low-pass filtering and overlapping interference fringe effects;
• Linearity of detection and data conversion.

The conoscopic system is an angular optical dispersion measurement system with Fourier optics. Photometric values ​​such as brightness obtained without any photometric standard calibration by the equipment will not be used. Relative values ​​such as angular optical dispersion and color uniformity will be applied.

Orthogonal three-axis stages must be used to set the measuring points of the DUT. A biaxial goniometer should be used to set the measurement direction (zenith angle and azimuth angle) of the DUT. The positioning accuracy of these devices shall be sufficient to provide the specified repeatability.

EUROLAB assists manufacturers with IEC EN 62595-2-3 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.