Brontes Colorimeter

The Brontes Colorimeter is a high-speed, high-precision instrument made especially for measuring colors and luminance in a production environment.

Colors are measured according to the human eye (CIE1931) and numerous color spaces are supported.

Because of its small and compact size, the Brontes can be easily integrated into your production environment and is ideal for use in a laboratory as well.

System Features

Interfaces
USB 2.0:	USBTMC compliant, SCPI command set, full speed device
l2C:	For embedded purposes, using the same command set at USB
RS232:	4 lines 3.3V general I/O
Trigger input:	3.3V compliant
Size
Dimensions:	50 mm x 50 mm x 100 mm (height-width-depth)
Mounting:	1/4 BSW mount on bottom plate, 4xM4 thread holes on bottom plate, 4xM4 thread holes on front
Measurement System
Photo detector:	Silicon photodiode using XYZ interference filter
Spectral response:	Approximates CIE1931 color matching functions
Color system:	XYZ, Yxy, Yuv, Lab, LCH, correlated color temperatures
Optical system:	Enclosed lens system - Direct measurement 2º or 6º Field of View
Speed (maximum):	luminance - 18 kHz; sampling color - 5.5 kHz

Color Specifications

Parameter	Range	Accuracy	Repeatability
Luminance (Y)	0.05 cd/m2 - 7500 cd/m2 8 gain stages, including auto ranging function Approximates CIE1931 color matching functions	±4% of measured value	±0.1%
Chromaticity: x,y	Approximates CIE1931 color matching functions	±0.001 absolute at equal energy point (x,y = 0.333)	x,y: ±0.001 for Y > 2 cd/m2 x,y: ±0.0002 for Y > 10 cd/m2 measurement time: 5 samples approximately 0.5 ms
CR measurement	Up to 15,000	±5% (depending on lowest Y value)	±5% (depending on lowest Y value)
Switching time	0.1-100 ms	±5%
Flicker	>0.05% at 50% Luminance level at every gain stage	±0.01% at 50% Luminance level	±0.01%
Temperature	0-40 ºC (above specification): measurement at other temperatures possible via fiber optics

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