Spektrofotometr

Witam, potrzebny jest Spektrofotometr o poniższych parametrach:

Spectral transmission and color coordinates on vehicle window glass Light transmission T L.
T L is the light transmission to be measured in the direction of the normal as per ECE-R43 (standard illuminant A).
Design as per drawing; deviating drawing requirements take precedence over the Technical Supply Specifications (TL).
The requirements specified in ECE-R43 apply to undefined values.
Color coordinates

Color impression when looking through the vehicle window glasses:
– Color coordinates according to CIELAB (L*a*b*).
– Measuring procedure and measuring conditions

The spectrometric measurement of spectral transmittance is performed according to ISO 9050 with air as reference medium at wavelengths from (380 to 780) nm (spectral bandwidth Δλ ≤ 5 nm). The window glass is perpendicular to the measuring beam.
– Device used for reference values

For example, double-beam spectrophotometer Lambda 900 by Perkin Elmer.
– Evaluation of color coordinates according to CIELAB (L*a*b*).

Colorimetric measures as per DIN EN ISO 11664-4 and DIN 5033-7 for standard illuminant D65,
10° standard observer, are calculated using the spectral transmission values.