OL 459 Tunable LED Standard

The OL 459 Tunable LED Standard is a fully tunable, thermally-managed, LED-based source that provides a highly stable, continuous spectrum from the visible to near infrared.



 The OL 459 Tunable LED Standard is designed for use as a reference source when calibrating VIS & NIR imaging cameras, photometers, colorimeters, and other optical instruments. The user can define various reference spectral profiles to suit the application requirements of the devices under test.

The OL 459 is packaged in a single, portable enclosure consisting of a 6-inch diameter integrating sphere, auxiliary reference port, keypad/display panel, luminance monitor, internal high-power multi-LED input source and all control electronics.

The keypad/ display panel is used to monitor and adjust the driving current and luminance of five separate, temperature-controlled LED channels. Remote control of the source is possible via USB interface and the supporting software, allowing for on/off source control, driving current tuning, and profile management. Internally, the OL 459 can store ten spectral profiles and four calibration factors that can be readily accessed from its keypad & display. Under software control from a Windows PC, there is no limit to the number of custom profiles and calibrations that may be utilized by the OL 459.

The OL 459 includes blue, green, red, deep red, and NIR channels. The OL 459 can be customized in a variety of ways, including sphere size and source wavelength range. Additionally, customer specific chromaticity, luminance, and spectral radiance calibrations can be provided.

<ul> <li>LED-based Source</li> <li>26 LED Wavelengths are Provided</li> <li>Continuous Spectrum Across the Visible/ NIR Wavelength Range</li> <li>Compact, Portable Design</li> <li>Integrated Monitor Detector</li> <li>High Uniformity Output Exit Port</li> <li>USB Connection for Remote Control</li> <li>Internal Hour Meter Tracks Usage</li> <li>Includes Software and SDK package</li> </ul>

<ul> <li>Camera Calibrations</li> <li>Blackbody Color Temperature Replication</li> <li>Customizable Spectra For R&D</li> </ul>

6.0” <em>(15.2 cm)</em> Diameter

1.50” <em>(38.1 mm)<em> Diameter

25,000 fL <em>(85656 cd/m²)</em> @ 2856K CCT

CIE 1931 x, y ± 0.003



> 98% Reflectivity

380 to 1000 nm </br> <em>(Custom Ranges Available)</em>

High Accuracy Temperature Stabilized Detector with CIE Vλ Filter

E-3 to E-8 Ranges --- 0.05% + 1 Digit <br> E-9 Ranges --- 0.10% + 1 Digit <br> E-10 Range --- 0.50% + 2 Digits <br>

< 2 Seconds

59°F to 95°F <em>(15°C to 35°C)</em> / 50% to 80% RH Non-condensing

48 VDC, 5.8 Amps <em>(via Supplied AC-to-DC Power Supply)</em>

100-240 VAC, 50/60 Hz, 4.5 Amps


SMA Connection

12.0” x 7.5” x 10.5” <em>(30.5 cm x 19 cm x 26.7 cm)</em>

13 lbs <em>(5.9 kg)</em>

OL 459 Tunable LED Standard Data Sheet

Calibration Sources White Paper