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HELIOS®Plus
Low Level Complete Systems
for Testing Sensitive Instruments
HELIOSPlus-LL L FAMILY

Great solution for night vision systems andsecurity cameras
The HELIOSPlus-LL, L Family systems are classic
QTH-based calibration sources designed for low leveland MIL Spec night vision sensor testing. Dual detectors
and automated attenuators give you the ability todial in an exact level at challenging low limits of yoursensors. Whether your work is scientific, military,intensified sensor testing or simulating low-signaturelevel sources, the L Family will become a corecalibration source for your lab.

Value:• Targeted for low level use and absolute testing• Automation and monitoring for use indark-lab conditions• High level of absolute characterization• Spare ports and future upgrade capability• Easy to configure a system to meet yourexact requirements

Performance:• 2856K Illuminant A QTH 250 - 2500 nm
black-body like spectrums• Extreme Dynamic Light Range:

Near daylight levels down to SNR-limitednight vision light levels- Cameras and sensors >16bit,actual 32bit (199dB)- Dual detector for high and low level
characterizations

www.labsphere.com | sales@labsphere.com© 2022 Labsphere, Inc. HELIOS® is a Registered Trademark of Labsphere, Inc. All Rights Reserved PB-14072-000 Rev 01

L Family: Low Level														Model Number
Smart Part Number

USLR-L20F-NBNL-P
L5NB-NLNN-NNLR-NS00-0000-P

USLR-L12F-NBNL-P
L3NB-NLNN-NNLR-NS00-0000-P

USLR-L12L-NBNL-P
L4NB-NLNN-NNLR-NS00-0000-P

USLR-L08F-NBNL-P
L1NB-NLNN-NNLR-NS00-0000-P

USLR-L08L-NBNL-P
L2NB-NLNN-NNLR-NS00-0000-P

OPTICAL PERFORMANCE SPECIFICATIONS					Spatial Luminance Uniformity over Exit Port (f/4) - All Lamps On+/-1%+/-1%+/-1%+/-1%+/-1%
Angular Uniform FOV (Full Angle) - Degrees / F# / NA - All Lamps On +/-2.0% - 35° / 0.85 / 0.6+/-2.0% - 35° / 0.85 / 0.6+/-2.0% - 35° / 0.85 / 0.6+/-2.0% - 35° / 0.85 / 0.6+/-2.0% - 35° / 0.85 / 0.6
Expected Luminance Output: cd/m2
1,600
4,700
6,400
6,500
9,500
Expected Illuminance at Port: lux
5,000
14,80020,00020,30030,000Est. Peak Radiance: W/m2-sr-um @ 1.10 um
55160240
230
350
Est. Peak Irradiance @ Port: Photons/s-m2-um @ 1.10um
2.70E+20
8.10E+20
1.10E+21
1.10E+21
1.50E+21
Minimum Resolution: lux
1.00E-06
1.00E-06
1.00E-06
1.00E-06
1.00E-06
Number of Steps in System Range
8.80E+06
8.00E+06
8.00E+06
6.00E+06
6.00E+06
Dynamic Range/Bits/dB
4.00E+09/31/191
1.00E+10/32/199
1.00E+10/32/199
6.25E+09/31/196
7.50E+09/32/197
Approximate Correlated Color Temperature (QTH)
2856K +/-50K
2856K +/-50K
2856K +/-50K
2856K +/-50K
2856K +/-50K
Typical Derated Lamp Lifetimes @ 2856K (hrs)>500>500>500>500>500
Est. Lamp Degradation Over Lifetime (% & CCT Shift)-10% & +/-200K-10% & +/-200K-10% & +/-200K-10% & +/-200K-10% & +/-200K
Est. Output Degradation over 50hrs (% & CCT Shift)-1.0% & +/-20K-1.0% & +/-20K-1.0% & +/-20K-1.0% & +/-20K-1.0% & +/-20K
INTEGRATING SPHERE					Coating / Material
Spectraflect®
Spectraflect
Spectralon®
Spectraflect
Spectralon
Sphere Internal Diameter: Inches (Meters)
20 (0.5)
12 (0.3)
11.5 (0.29)
8 (0.2)
7.5 (0.19)
Frame Type
20in Cage
12in Cage
12in Cage
8in Cage
8in Cage
Output Port Size: Inches (Meters)
8 (0.2)4 (0.1)4 (0.1)2 (0.05)
2 (0.05)
SYSTEM COMPONENTS					QTH Lamps Internal (# , Wattage)(3) 10, (1) 50(3) 10, (1) 50(1) 10, (3) 50(2) 10, (1) 50(2) 10, (1) 50
QTH Lamps External (#, Wattage)
None
None
None
None
None
Xenon Lamp & Housing
None
None
None
None
None
Spectralon Satellite Sphere (ID/OD)
3”/4”
3”/4”3”/4”3”/4”
3”/4”Power Supplies (# - Model)(4) LPS-175(4) LPS-175(4) LPS-175(3) LPS-175(3) LPS-175
Variable Attenuator
VAA-220B
VAA-220B
VAA-220B
VAA-220B
VAA-220B
Monitor Detector(s)SD-L1, SD-S1
SD-L1, SD-S1
SD-L1, SD-S1
SD-L1, SD-S1
SD-L1, SD-S1
Detector Filters (in Filter Holder)
Photopic
Photopic
Photopic
Photopic
Photopic
System Software
HELIOSense
HELIOSense
HELIOSense
HELIOSense
HELIOSense
STANDARD SYSTEM CALIBRATIONS (NIST Traceable)					Luminance
Yes
Yes
Yes
Yes
Correlated Color Temp (All lamps matched & w/VA position)
Yes
Yes
Yes
Yes
Spectral Radiance (350-2400nm)
Yes
Yes
Yes
Yes
Exit Port Spatial Uniformity
Yes
Yes
Yes
Yes
Exit port Angular Uniformity
Yes
Yes
Yes
Yes
Night Vision Level Characterization
Yes
Yes
Yes
Yes
Operational Duration of Calibration
50hrs
50hrs
50hrs
50hrs

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Yes
Yes
Yes
Yes
Yes
Yes
50hrs

© 2022 Labsphere, Inc. HELIOS®, Spectraflect® and Spectralon® are Registered Trademarks of Labsphere, Inc. All Rights Reserved PB-14072-001 Rev 05