Multi-Reference Imaging Light Measurement Device

Emerging display technologies, e.g. OLEDonSi, present opportunities and challenges in display metrology. A novel concept to achieve accurate color measurement for displays is presented. The solution is an imaging system equipped with a conoscopic lens with a wide field of view and multiple spectral reference spots to correct for spectral variations. By combining camera images with spectral data, the authors effectively characterize the angular color properties of the display.