Reflectance Integrating Spheres for Spectrometers

ISP-R series fiber optic integrating spheres couple to Ocean Optics spectrometers to measure the total integrated reflectance of surfaces placed against the sphere’s sample port. ISP-R integrating spheres are well-suited for measurement of opaque or highly directional samples. The spheres are available in 6 mm and 8 mm sample port diameters and gloss-trap options are available that allow you to measure the specular component of the total integrated reflection.

The ISP-REF has 10.32 mm (0.41”) sample port aperture, a transfer optic assembly for restricting the fiber viewing angle and a built-in tungsten-halogen light source. The sphere is coated with Spectralon®, a white diffusing material that provides a highly Lambertian reflecting surface. A simple switch allows users to manipulate the sphere for the inclusion (I) or exclusion (E) of specular reflectance.

Specifications	ISP-30-6-R	ISP-50-8-R	ISP-50-8-R-GT	ISP-REF	ISP-REF-B
Description	Measures the total integrated reflectance of surfaces placed against the sphere’s sample port	Measures the total integrated reflectance of surfaces placed against the sphere’s sample port	Measures the spectral output of LEDs, lasers and other light sources and consists of a PTFE-based, sintered diffusing material	Provides even surface illumination for reflectance measurements of surfaces such as the color of flat samples	Spare bulb for the ISP-REFL sphere lamp
Gloss Trap	No	No	Yes	NA	–
Sample Port Diameter	6 mm	8 mm	8 mm	10.32 mm	–
Spectral Range	200-2500 nm	200-2500 nm	200-2500 nm	~360-2500 nm	–
Sphere Coating	PTFE	PTFE	PTFE	Spectralon doped with BaSO4	–
Sphere Diameter	30 mm	50 mm	50 mm	38.1 mm	–
Connector	SMA 905	SMA 905	SMA 905	SMA 905	–
Dimensions	59 mm diameter 58 mm height	80 mm diameter 78 mm height	80 mm diameter 78 mm height	54 mm x 57 mm x 83 mm (LWH)	–
PTFE Reflectivity	>98% (400-1500 nm) >95% (250-2500 nm)	>98% (400-1500 nm) >95% (250-2500 nm)	>98% (400-1500 nm) >95% (250-2500 nm)	>98% (400-1500 nm) >95% (250-2000 nm)	–
Weight	330 g	730 g	730 g	864.7 g	–
Bulb Color Temperature	NA	NA	NA	3100 K	3100 K
Bulb Life	NA	NA	NA	900 hours	900 hours