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Technical Information
 

APPLICATIONS

  • Calibration and Testing of Detectors
  • Calibration and Testing of Electronic Imaging Devices
  • Calibration and Testing of CCD Cameras
  • Calibration of Photometers and Radiometers
  • Illumination for Densitometry
  • Illumination of Resolution Targets
  • MTF Testing of Optical Systems
  • Transmittance Measurements of Fiberoptics

Uniform Source Integrating Spheres include a series of five sphere designs ranging from 6 to 40 inches in diameter. The US-060-SL, 6 inch diameter sphere is machined from Spectralon, a thermoplastic resin which is characterized by >99% reflectance over the wavelength range from 400 to 1500 nm, and >95% reflectance from 250 to 2500 nm. Spectralon provides the thermal stability necessary for applications requiring an intense uniform light source (e.g. 125,000 foot-lamberts). For the remaining spheres (6, 12, 20 and 40 inch diameters), the interiors are coated with Spectraflect diffuse reflectance coating. Each uniform source integrating sphere is designed to accommodate a range of light sources and lamp power supplies offered by Labsphere.

US-060-SL

The US-060-SL is a 6 inch diameter sphere consisting of a machined Spectralon cavity encased in an aluminum housing. The Spectralon sphere is ideal for applications requiring an intense uniform light source. The sphere is equipped with two 1 inch diameter lamp ports and one 2 inch diameter exit port. The three ports are located 90 apart. A port plug is included to cover the unused lamp port. The sphere includes a rod/post base assembly comprised of a 1/4-20 mounting boss and a 6 x 6 inch baseplate. The baseplate may be removed for alternative mounting of the sphere.

US-060-SF

The US-060-SF is a 6 inch diameter integrating sphere that provides exceptional uniform luminance over the full 2 inch diameter of the sphere exit port. The sphere interior is coated with Spectraflect coating. A smaller, 3 inch diameter satellite sphere (coated with Spectraflect) is fixed to the US-060-SF, thus providing a source of light into the larger, 6 inch sphere. An iris diaphragm between the two spheres controls the size of the aperture and the amount of light entering the larger sphere. The satellite sphere has a 1 inch diameter lamp port which accepts the standard halogen light sources.

To prevent direct illumination from the lamp into the wall of the larger sphere, a diffuser has been placed between the two spheres. The mounting frame of the US-060-SF allows for sphere height adjustment.

US-120-SF

The US-120-SF is a 12 inch diameter integrating sphere that provides exceptional uniform luminance over the full 4 inch diameter of the sphere exit port. The sphere interior is coated with Spectraflect coating. Four 1 inch diameter lamp ports are equally spaced around the exit port; the lamp ports are baffled to prevent direct radiation from reaching the exit port from each individual lamp. An additional 0.50 inch port is provided adjacent to the exit port to accommodate a luminance monitor. A port plug is included if this port is not used. The mounting frame supplied with the US-120-SF allows for sphere height adjustment while allowing sphere rotation to position the exit port aperture in a vertical or horizontal plane.

US-200-SF

The US-200-SF is a 20 inch diameter integrating sphere that provides exceptional uniform luminance over the full 8 inch diameter of the sphere exit port. The sphere interior is coated with Spectraflect coating. Four internal lamp mounts are equally spaced around the exit port aperture. The lamp mounts are designed to accept two 45 watt and two 150 watt direct mount halogen light sources. An additional 0.50 port is provided adjacent to the exit port to accommodate a luminance monitor. A plug is included if the port is not used. The mounting frame supplied with the US-200-SF allows for sphere height adjustment while allowing sphere rotation to position the exit port aperture in a vertical or horizontal plane.

US-400-SF

The US-400-SF is a 40 inch diameter integrating sphere designed to provide exceptional uniform luminance over the full 14 inch diameter of the sphere exit port. The sphere is internally coated with Spectraflect. Ten internal lamp mounts are equally spaced around the exit port aperture. The lamp mounts are designed to accept 150 watt direct mount halogen light sources. An additional 0.50 inch port is provided adjacent to the exit port to accommodate a luminance monitor. A port plug is included if this port is not used. Heavy duty locking casters supplied as part of the US-400-SF support frame allow the unit to be rolled and locked into position.

SPECIFICATIONS AND ORDERING INFORMATION

PART NO.

SPHERE DIA. (IN.)

PORTS (NO.)

OUTPUT PORT DIA. (IN.)

DETECTOR PORT (IN.)

MATERIAL/ COATING

US-060-SL

6

3

2.00

N/A

Spectralon

US-060-SF

6

3

2.00

0.50

Spectraflect

US-120-SF

12

6

4.00

0.50

Spectraflect

US-200-SF

20

2

8.00

0.50

Spectraflect

US-400-SF

40

2

14.0

0.50

Spectraflect

 

 

 

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