Colorimeter, Sensor, Compact
Sunday, September 03, 2006
A Compact Colorimeter Sensor has been designed and developed with a solid-state construction (no moving parts). The Colorimeter Sensor has the performance characteristics of a spectrophotometer and a Colorimeter combined, for detecting, measuring, and identifying colors. LED’s are the light sources. Minimum sample size can be as small as 3.5-mm diameter. The spectral range of the Colorimeter is from 400 mm to 700 mm and could be extended into the Near Infrared.
A combination of spectral curve response of the photodetector and the spectral curve output of the light source determine the color of the sample. Temperature compensation is achieved by a thermal sensor and temperature compensation electronics.
The Colorimeter converts the light reflected from many sample data points to electrical signals. These signals are converted to a reflectance database. With this database, using traditional color logic output signals, computer logic can be used for color analysis. When used with a color matching data, originally created by a spectrophotometer, the computer logic can provide color matching and batch correction functions for multiunit applications.
Source: "Low-cost portable color measurement”, by Martha H. Tulloch, Photonics Spectra, Feb. 1995
References:
1) Letter dated 30 October 1995 by Alexander E. Martens, Cornelius J. McCarthy, Accuracy Microsensors, Inc., 3800 Monroe Avenue, Pittsford, NY 14534-1330
2) United States Patent Number 5,137,364
3) Alexander E. Martens, Cornelius J. McCarthy, Accuracy Microsensors, Inc.; Ph: 1-716-381-1480; Fax: 1-716-381-9801
Industrial Products
posted by JD52 @ 12:27 AM,
