Color measurement with fixed or variable aperture

Technical Properties

• Measuring Capability

  Color, Gloss, Fluorescence

Color Measurement

• Color Geometry

  45°c:0°

• Sample Port

  32 mm

• Measuring Area

  22 mm

• Spectral Range Colorimetric

  400 - 700 nm, 10 nm resolution

• Spectral Range Fluorescence

  300 - 760 nm, 10 nm resolution

• Measurement Range

  0 - 170% remission

• Repeatability Color

  0.01 ΔE94 (10 readings on white)

• Reproducibility Color

  0.1 ΔE94 (average of 12 BCRA II tiles)

• Color Systems

  CIELab/Ch, Lab (h), XYZ, Yxy

• Color Indices

  YIE313, YID1925, WIE313, CIE, Berger, Color Strength, Opacity, Metamerism, Grayscale

• Illuminants

  A, C, D50, D55, D65, D75, F2, F6, F7, F8, F10, F11, UL30, CIE 015:2018 LED Normlicht

• Observer

  2°, 10°

Gloss Measurement

• Gloss Measurement

  	20°	60°
  Measurement Range	0 - 100 GU	0 - 100 GU
  Aperture Size	9 x 10 mm	9 x 16 mm
  Repeatability	0 - 100 GU: ± 0.2 GU	0 - 20 GU: ± 0.1 GU 20 - 100 GU: ± 0.2 GU
  Reproducibility	0 - 100 GU: ± 1.0 GU	0 - 20 GU: ± 0.5 GU 20 - 100 GU: ± 1.0 GU
  Available for Aperture	32 mm, 12 mm	32 mm

General

• Memory

  4,000 standards and 10,000 samples

• Interface

  USB-cable, LAN

• Display

  5" Capacitive Color Touchscreen

• Languages

  Chinese English French German Italian Japanese Russian Spanish

• Power supply

  12 V DC; max. 3 A

• Weight

  7 kg

• Weight

  15.5 lb

• Operating temperature

  10 - 40 °C

• Storing temperature

  0 - 60 °C

• Operating temperature

  50 - 104 °F

• Storing temperature

  32 - 140 °F

• Relative humidity

  Up to 85% at 35 °C (95 °F), non-condensing

• Dimensions: L x W x H

  39 x 26 x 19 cm

• Dimensions: L x W x H

  15.35 x 10.2 x 7.5 in

The basic building blocks of color measurement

Visual color perception is influenced by our individual color preferences, which are dependent on personal factors (mood, age, gender etc.), environment (lighting, surrounding etc.) as well as our ability to communicate color and color differences. A color looks different in the department store (cool white fluorescent lighting) than at home (warm, incandescent lighting). In order to guarantee consistent color and appearance under all possible circumstances, it is essential to standardize light source, observer and understand the spectral remission data of the object. This information will be the basis for calculation of colorimetric data as it is used for color communication and color QC in production.

Color Difference Equations for Solid Colors

It is now almost 100 years since, in 1931, the CIE Yxy chromaticity color space was defined by the “International Commission on Illumination (CIE)”. To overcome its limitations of not being uniform, the CIE recommended two alternate color spaces since then: CIELAB (or CIE 1976 L*a*b*) and CIELUV (or CIE L*u*v*). They are based on the opponent color theory of color vision, which says that two colors cannot be both green and red at the same time, nor blue and yellow at the same time. During the last years developments of new color difference equations and color spaces were carried out. Their goal was to improve the correlation between visual perception and instrumentally measured values. Additionally, they wanted to permit the use of a single number tolerance for all colors.

Color Measurement of Fluorescent Colors – a CHALLENGE

The world around us is bright and colorful. Neon colors in particular have been back in trend for several years. The prerequisite for this is the use of fluorescent pigments in the paint, plastic and many other industries. Although these have been widely used for many years, the quality control of fluorescent material still remains a major challenge. The following article describes theoretical background of fluorescence, why a standard spectrophotometer is not suitable for the quality control of fluorescent material and what possibilities the new combination of spectrophotometer and fluorimeter offers - especially with regard to predicting the lightfastness of a material.