ISV Integrating Sphere Visible Sources

DESCRIPTION

The ISV200 and ISV400 are compact, reliable, easy to operate systems specifically designed for test and calibration of detectors and sensor systems which respond in the visible light spectrum such as photometers, CCD cameras, radiometers, remote sensing systems and vision enhancement systems. 

The ISV200 visible source is a 6" diameter integrating sphere with a 2" diameter exit port.

The ISV400 visible source incorporates a 12" diameter integrating sphere with a 4" diameter exit port. The PTFE interior sphere coating provides uniform and lambertian luminance. Optional barium sulfate coating is also available. 

Illumination is provided by quartz halogen lamps. The variable output lamp uses a closed loop control sensor and output attenuator to provide unprecedented ease of use and stability. The ISV200 is calibrated from 1 to 1,000 foot-lambert. In the ISV400 an additional three fixed output lamps are automatically turned on or off as required to extend the range from 50 to 10,000 foot-lamberts (170 to 34,260 cd/m²). All four lamps are calibrated to an traceable color temperature of 2950 ± 25 K.  An optional High Light output version is available that delivers up to 25,000 foot-lamberts.

The ISV200 and ISV400 provide the uniform stimuli required for visible testing including Minimum Resolvable Contrast, Uniformity and MTF. EOI offers a complete line of testing software to automate these and other test procedures.

CONTROL

The ISV200 and ISV400 utilize closed loop control of the detector/attenuator system to precisely set and maintain the desired output level. A silicon detector continuously monitors the output of the lamps and provides feedback to the attenuator, providing very stable and repeatable performance. 

Control electronics and lamp power supplies are built into a single 5.25" high, 19" rack mount unit. Operation of the system is from the front panel keypad or via the built in IEEE-488 and RS-232 computer interfaces.