Conoscope Lens

Fast, Accurate, Low-cost View Angle Performance Measurement Solution for Displays

The Radiant Vision Systems conoscope lens enables high-resolution photopic measurement of the angular distribution of color, luminance, and contrast of displays and display components. Radiant Vision Systems utilizes Fourier optics that map an emitting spot to a CCD so that each pixel corresponds to a different emission angle. The conoscope lens captures a full cone of view angle data in a single measurement to ±58 degrees. This provides quick, accurate results, making the system ideal for both R&D projects and in-line production quality control. The lens is well-suited to a wide range of display types including those based on LCD and OLED technologies, as well as backlights.

High-Resolution Angular Measurement

Conoscopic Lens for In-Line
Color and Luminance Measurement for FPDsThe conoscope lens  provides an angular resolution of 0.06 degrees per CCD pixel. Paired with the ProMetric® I16 Colorimeter or Y16 Photometer featuring a 16 megapixel CCD sensor, the conoscope lens has the capability to measure luminance, radiance, angular contrast, CIE chromaticity coordinates, and correlated color temperature (CCT) with a high degree of accuracy at each view angle.

Seamless Evaluation from R&D to Production Lines

The conoscope lens solution simultaneously acquires view angle measurements to ±58 degrees with reduced hardware size and complexity compared to typical goniometric measurement systems for R&D applications. A ProMetric camera and lens combination can be purchased for a fraction of the cost of alternative solutions. Because of its speed and compact form factor, the conoscope lens solution is also ideally-suited for in-line inspection of displays during production. This capability enables real-time pass/reject operations based on display view angle performance data, eliminating poor-quality components from the line and identifying quality trends before significant materials loss. Using the conoscope lens, Radiant Vision Systems cameras can be applied concurrently in R&D and production environments to capture identical measurements of view angle data for seamless evaluation of displays throughout an entire product lifecycle, from initial characterization to quality control.

Mount to ProMetric Photometers and Colorimeters

The conoscope lens mounts directly to the ProMetric Y Imaging Photometer or ProMetric I Imaging Colorimeter using a custom bracket.  By mounting a conoscope lens directly to a ProMetric imaging photometer or colorimeter, the conoscope lens offers the most efficient means of measuring view angle performance using a turnkey, compact camera solution that requires minimal setup and integration time, equipment, or expertise. As part of the ProMetric family of imaging colorimeters and photometers, the conoscope lens camera solution also comes with ProMetric Software, a powerful, Windows®-based software suite that provides equipment control, data acquisition and image analysis.

Conoscope Lens Key Features and Highlights:

  • Accurate, reliable measurement of luminance, chromaticity, and contrast to ±58° view angle
  • Faster than goniometric systems, capturing data for all angles simultaneously
  • Easily paired with ProMetric imaging colorimeters or photometers
  • Combination of low cost, high performance, and flexibility, designed for R&D and quality assurance labs
  • Easy-to-use measurement control and analysis software

All Radiant Vision Systems cameras feature ProMetric Software, which provides intuitive camera set-up and customizeable automated measurement sequences. Extensive data analysis and display functions are also supported, including isometric plots, cross-section graphs, radar plots, bitmaps and CIE color plots.

Typical Applications

The conoscope lens simplifies the process of capturing view angle measurements using a single compact camera solution that addresses both off-line and in-line applications:

  • View angle performance measurement for LCD and OLED displays
  • Technology evaluation and characterization in display R&D and quality control
  • In-line quality control during display manufacturing