
VGI-150 Veiling Glare Index Test
- Small footprint for lower overall cost and easy deployment
- Image capture hardware and software available
- EOI software processes images per ISO standard 9358
Requiring only 12.5% of the volume to perform Veiling Glare Index measurements per ISO 9358 compared with the large spheres described in the standard, VGI-150's small footprint makes possible an easy deployment on a production line and a lower cost overall. The innovative new design has additional benefits of 180° orientation of the off-axis glancing light angles and adjustable light levels with continuous monitoring of the black and white targets so the contrast level is a known ratio at the time the measurements are made.
The VGI-150 also provides a high contrast (>1000:1) controlled black target surrounded by white light entering the lens at glancing angles. The VGI-150 Test System is an innovative, unique design utilizing a sphere within a sphere to keep the overall size to less than 0.5 m diameters. There are two detectors, one to measure the dark target sphere and one for the white light level in the outer sphere (up to 20,000 ft.L). X-Y and Azimuth stages are included for the camera system to be adjusted for incoming glancing angles.
The VGI-150 utilizes the same proven lamp power supplies and feedback detectors as EOI’s highly stable (±0.2%) Integrating Sphere product line.
