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Integrating Sphere Detector

The ISD-5P-Si integrating sphere detector employ a 50 mm diameter ODM98 coated integrating sphere with 10mm diameter measurement port. The unique collar baffle limits direct irradiation of the detector from dispersed light. The collar baffle enables optional detector ports to be added for additional detectors, fiber connectors or auxiliary use. The ISD-5P-Si features a Si photodiode detector for use in the spectral range from 400 nm to 1100nm spectral range. 

Synthetic Coating 

Gigahertz-Optik’s synthetic ODM98 coating offers almost perfect hemispherical diffuse reflection for best light distribution inside the sphere. 

Traceable Calibrations 

Calibration of spectral radiant power sensitivity in W is performed in 10 nm steps from 400 nm to 1100 nm at Gigahertz-Optik’s Calibration Laboratory for Optical Radiation Quantities.

Typical Spectral Responsivity

Calibration of spectral radiant power responsivity in A/W in 10 nm steps from 400 nm - 1100 nm

spectral responsivity

400 nm - 1100 nm radiometric

typical responsivity

2.5E-03 A/W @ 630 nm

max. Radiant Power (Peak)

80 mW @ 633 nm & 200 µA

400 mW @ 633 nm & 1 mA

max. Radiant Power (CW)

may be limited by max. operation temperature

Max. signal current

1 mA

Input optics

10 mm Ø

Sphere diameter

50 mm




Si photodiode

spectral range

(400  - 1100) nm

Rise time

0.5 µs


M6 threaded hole


coaxial cable 2 m Long, with BNC (-1), calibration data (-2) or ITT (-4) connector

temperature range

(5 - 40) °C

Type Description File-Type Download
Datasheet ISD-5P-Si PDF
Produktname Product Image Description Show product
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X1 Four-channel USB optometer designed for mobile use.

Features: Compact device for use with all photometric, radiometric, colorimetric, plant-physiologic and photo-biologic measurement heads from Gigahertz-Optik. USB interface. Battery operation or power supply USB.
P-2000 Two-channel optometer.

Features: For use with most photometric and radiometric detectors supplied by Gigahertz-Optik. Modes: CW, pulse energy from both single and multiple flashes, effective luminous intensity (Blondel-Rey), data logger and others.
P-9801 Eight-channel optometer.

Features: State-of-the-art 8 channel laboratory optometer with a signal amplifier and sample & hold ADC per channel for clocked recording of the measurement signals. RS232 and IEEE488 interface. Trigger input and output.
P-9802 Light meter for laboratory use with up to 36 measurement heads.

Features: For use with up to 36 photometric and/or radiometric measurement heads. RS232 interface.
Article-Nr Modell Description Request / Compare
15298327 ISD-5P-Si-1

Detector with -1 connector, calibration certificate.

15298328 ISD-5P-Si-2

Detector with -2 connector, calibration certificate.

15298329 ISD-5P-Si-4

Detector with -4 connector, calibration certificate.

15300253 K-ISD5PSi-SD

Calibration of spectral radiant power sensitivity in A/W with calibration certificate.

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