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Technical Information
 

FEATURES

  • Luminance Uniformity >98%
  • Calibration Traceable to NIST
  • 12 inch Diameter Spectraflect Integrating Sphere
  • 4 inch Diameter Emitting Area

The USS-1200 and the USS-1200V Uniform Source Systems feature 12 inch diameter Spectraflect integrating spheres designed to provide exceptionally uniform luminance over the full 4 inch diameter sphere exit port. Luminance output is variable from 2,300 to 9,000 foot-lamberts on the USS-1200 and from zero to 9,000 foot-lamberts on the USS-120OV. Uniformity is greater than 98%. Each system is calibrated to read luminance in foot-lamberts. Calibration is traceable to National Institute of Standards and Technology (NIST) standards.

System Options
USS-1200 Uniform Source System

The USS-1200 Uniform Source System features a 12 inch diameter Spectraflect integrating sphere outfitted with four internally mounted IHLS-100-30 30 watt Halogen Light Sources and four LPS-045-H Lamp Power Supplies that provide regulated DC constant current control to the light sources. The IHLS-100-30 Light Sources are mounted equally spaced around the output port aperture. Each may be separately activated to achieve four adjustable output levels. Luminance output is variable from 2,300 to 9,000 foot-lamberts. An SDA-050-P Silicon Detector Assembly monitors the luminance at the exit port aperture. The system is operated through the SC-5500 Integrating Sphere System Control, a sophisticated radiometer that offers both an IEEE-488 bus and an RS-232C serial port for optional computerization of the system.

USS-1200V
Uniform Source System

The USS-1200V Uniform Source System features both the VA-100-SC Motorized Variable Attenuator and VAC-1000 Variable Attenuator Control to provide the benefit of more precise control of low light levels. The VAC-1000, combined with the SC-5500 Integrating Sphere System Control and a personal computer, allow the user to set the VA-100-SC to any of 256 linear steps. Three IHLS-100-30 30 watt Halogen Light Sources and one EHLS-100-75R 75 watt externally mounted halogen light source provide input to the integrating sphere. Three LPS-045-H Lamp Power Supplies and one LPS-200H Lamp Power Supply provide DC regulated constant current to the light sources. Luminance output is variable from zero to 9,000 foot-lamberts. An SDA-050-P Silicon Detector Assembly monitors the luminance at the exit port. Windows-based software is provided with the USS-1200V Uniform Source System.

USS-1200V System Software

The Windows-based software supplied with the USS-1200V consists of a single screen that shows a slide control for adjustment of the variable attenuators, and on/off control of the system's lamps.

The luminous level of the exit port is continuously displayed on the computer screen. The software may be operated by a mouse or the computer keyboard and requires no further programming. Custom software packages can be developed to allow the user, through feedback loops, to program in special characteristics.


OPTIONAL SYSTEMS CALIBRATIONS


USC-PM

The USC-PM is a point-by-point luminance measurement of the exit port plane to determine the actual uniformity.

USC-SR

The USC-SR is a spectral radiance measurement from 300 to 2400 nm to determine the actual spectral radiance in W/cm2/sr/m.

click here 
 
View Typical Maximum Spectral Radiance

 

SPECIFICATIONS AND ORDERING INFORMATION

PART NUMBER

USS-1200V

USS-1200

  

Luminance Range:

0 to 9,000
foot-lamberts

2,300 to 9,000
foot-lamberts

 

Luminance Uniformity:

>98%

>98%

   

Peak Radiance:

95 mW/cm2/sr/m
@ 0.9 m

95 mW/cm2/sr/m
@ 0.9 m

 

INTEGRATING
SPHERE

US-120-SF

US-120-SF

   

Sphere Diameter:

12 inches

12 inches

 

Output Port Diameter:

4 inches

4 inches

   

Sphere Coating:

Spectraflect

Spectraflect

 

Sphere Mount:

Vertical / Horizontal
adjustment

Vertical / Horizontal
adjustment

   

Frame Mount:

Bench Top

Bench Top

 

INTERNAL
LIGHT SOURCES

IHLS-100-30-SF

IHLS-100-30-SF

  

Lamps:

Three 30 watt

Four 30 watt

 

Color Temperature:

3100 K

3100 K

   

Lamp Life:

Up to 400 hrs.

Up to 400 hrs.

 

EXTERNAL
LIGHT SOURCES

EHLS-100-75R

N/A

    

Lamps:

One 75 watt

 
 

Color Temperature:

3000 K

   
   

Lamp Life:

Up to 3000 hrs.

 
 

LAMP POWER
SUPPLIES

LPS-045-H

LPS-200-H

LPS-045-H

Number:

Three

One

Four

Output Rating (max):

45 watts

200 watts

45 watts

Power Requirements:

100-120/220-240 VAC;
50/60Hz

100-120/220-240 VAC;
50/60Hz

 

Current Stability:

0.1% 0.2mA

   

10.1% 0.2mA

Current Rise Time:

2 min.

  

2 min.

Operating Temperature:

0 - 70 C

   

0 - 70 C

DETECTOR

SDA-050-P

SDA-050-P

   

Spectral Range:

400 - 700 nm

400 - 700 nm

     

Spectral Peak:

555 nm

555 nm

  

VARIABLE
ATTENUATOR

VA-100-SC

N/A

   

VARIABLE
ATTENUATOR CONTROL

VAC-1000

N/A

 

Power Requirements:

100-120/220-240 VAC;
50/60Hz

   
   

Incremental Aperture Steps:

256 steps

 
 

SYSTEM
CONTROL

SC-5500

SC-5500

  

Range:

7 decades/Amps;
5 decades/Volts

7 decades/Amps;
5 decades/Volts

 

Sensitivity:

0.1 pA; 1.0 V

0.1 pA; 1.0 V

   

Resolution:

4.5 digits

4.5 digits

 

Computer Interface:

IEEE-488; RS-232C

IEEE-488; RS-232C

   

Power Requirements:

100-120/220-240 VAC;
50/60Hz

100-120/220-240 VAC;
50/60Hz

 

Operating Temperature:

0 - 50 C

0 - 50 C

   

 

 

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