Increasingly important - Imaging photometers and colorimeters

The use of imaging photometers and colorimeters for fast recording of photometric and colorimetric quantities with spatial resolution has attracted increasing interest. Compared with measuring instruments without spatial resolution, such as spectrometers, this technology offers the following advantages:

  • Substantial time-savings with simultaneous capture of a large number of measurements in a single image
  • Comprehensive image-processing software permits automated methods of analysis, e.g. calculation of homogeneity or contrast

Imaging photometers and colorimeters are the instruments of choice for:

  • Measurement of luminance and color distribution of panel graphics, switches and instrument clusters for vehicles
  • Measurement of homogeneity, contrast, and mura of flat-panel displays
  • Homogeneity analysis of lamps and luminaires used in general lighting
  • Capturing luminance distribution curves of small lamps and luminaires

Instrument Systems developed the LumiCam 1300 model series and its powerful software with the focus on the applications mentioned above.

The LumiCam 1300 family:

LumiCam 1300 Mono: Compact luminance camera for reliable and precise measurements
LumiCam 1300 Color: Version with additional color filters for luminance and color measurements
LumiCam 1300 Advanced: More advanced camera concept for maximum precision in luminance and color measurement

You will find detailed information in our new LumiCam 1300 brochure.

LumiCam 1300 Video

Imaging colorimetric measurement

In this measuring procedure, the colorimeter displays the device under test (DUT) on a CCD sensor using an objective lens and the V(λ) or tristimulus filters mounted behind. At the end of the measurement, calibrated luminance and color values are available for each pixel in the field of view. Analyses of complex image content can be carried out over flat surfaces easily, quickly, accurately and reproducibly. The adjustment quality of the filter to the sensitivity curves x̄, ȳ, z̄ determines the measuring accuracy. Many cameras have three filters for calculating the tristimulus values X, Y, Z, corresponding to the curves x̄, ȳ, z̄. However, the x̄ function has two spectral ranges which can only be imprecisely represented using a single filter. The colorimeters of the LumiCam 1300 family therefore operate with at least 4 filters. They present a genuine alternative to spectroradiometers, particularly for the measurement of flat elements, and combine accuracy with speed and flexibility.