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Zenith Polymer® Reflectance Standards

Zenith Polymer® – Diffuse Reflectance Standards

SphereOptics diffuse reflectance standards are made from our proprietary Zenith Polymer® reflectance material. This highly reflecting, PTFE-based material is resistant to heat, humidity and exposure to high levels of radiation, making it ideal for use as reflectance standards. Those are available in two sizes of 50 mm and 30 mm diameter with reflectance values of 99 %, 80 %, 60 %, 50 %, 25 %, 10 %, 5 % and 2.5 %. Standards are sold individually or in sets of two, four or eight standards with a free choice of reflectance values. Each standard is packaged in a durable holder with a protective cover and comes in a storage box.

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  • Nearly ideal lambertian, diffuse reflectance from 2,5 % to 99 %
  • Constant reflection over the wavelenght range 250 – 2450 nm
  • Tolerance in reflectance value depending on batch in range of +/- 3 %
  • Certified calibration using a PerkinElmer Lambda 950, which is traceable to PTB and NIST
  • Surface reflectance is constant in range of +/- 1 % R
  • Laser damage threshold: 8 J/cm²  pulsed laser
  • Non-polar, insulator, hydrophobic
  • Chemically inert, exception: reacts with organic Lithium and Sodium compounds
  • Usable temperature range: – 50 °C to 250 °C
  • Usable humidity range: 5 % to 95 %, but water absorption bands will be visible
  • Standard pore sizes 1 – 20 μm, average 6 μm, Standard pore sizes 1 – 20 μm, average 6 μm

Temperature Range (°C)

Thermal Linear Coefficient @ 10-5 (1/K)

from

 to

 

-100

 -50

7.8

-50

10

9.1

10

30

23.7

30

100

10.8

100

200

14.0

200

260

22.9

260

300

39.3

30

200

12.7

30

260

15.4

30

300

18.4

Camera calibration

Definition of contrast for cameras calibration

Calibration

Calibration of integrating sphere systems, spectrometers, photometers and radiometers

Environment

Environment laser and test targets

Light Sources

Light source characteristic and behavior

Datasheets

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