PSI offers a range of lamps in alignment jigs for use as luminous intensity and radiant intensity standard lamps.

We manufacture high quality LED reference lamps for use as transfer standards and as coloured auxiliary lamps in integrating sphere applications. The lamps are highly stable and repeatable and operate directly from mains power anywhere in the world (100-250 V 50/60 Hz).

The FS-250A LED Ganzfeld is a programmable LED luminance source. It consists of a 200mm diameter sphere internally coated with a high-reflectance diffuse white paint; and illumination is provided by internal arrays of white LEDs. The operator can program a continuous background luminance and also transient pulse stimulus patterns. The FS-250A can be used as an LED luminance standard and also as a powerful R&D tool for studying the fundamentals of vision.

The TLCS-300 is a tuneable LED colour source and also a variable luminance standard. Two light sources are supplied with the TLCS-300: an LED module and a QH source.

The accuracy of any spectroradiometric measurement can only be as good as that of the standard source used to calibrate the system. 

Bentham manufactures a range of sources calibrated in their own laboratory using NPL calibrated versions of the same product:

• CL2 Spectral Irradiance Standard 250-3000nm
• CL3 UV Spectral Irradiance Standard 200-400nm
• CL6 Spectral Irradiance Standard 200-3000nm, fully enclosed
• CL7 UV Spectral Irradiance Standard 200-400nm, fully enclosed
• SRS8 Spectral Radiance/Radiant Intensity Standard
• SRS12 Spectral Radiance/Radiant Intensity Standard
• TSRF/TLF Total Spectral Radiant Flux Standard 300-800nm
• CL-Hg Low Pressure Mercury Lamp
• Si-CAL Silicon Standard 200-1100 nm
• Ge-CAL Germanium Standard 800-1800nm

For more detailed information, please refer to Bentham website:http://www.bentham.co.uk/calibration_standards.htm

Bentham’s range of light sources has evolved to suit the requirements of our systems and their users and now offers single or multiple sources from 200nm to 40µm:

• IL1 General purpose QH-based light source, 350nm to 2500nm
• IL6/7/8 Modular light source housings for deuterium, QH, xenon, Hg and infrared lamps, 200nm to 30µm
• IL75e Ellipsoidal reflector-based Xe lamp
• ILD-D2-QH Xenon Quartz Halogen Dual Light Source
• ILD-QH-IR Quartz Halogen IR Dual Light Source
• ILD-D2-QH Deuterium Quartz Halogen Dual Light Source

For more detailed information, please refer to Bentham website: http://www.bentham.co.uk/light_sources.htm