Filters for Color-Selective Light Engines
Lumencor’s AURA, RETRA, SPECTRA and SPECTRA X Light Engines incorporate bandpass filters associated with each light output channel. These filters provide the capacity to refine, adjust, and tune the light source outputs to meet experimental requirements. For AURA, RETRA and SPECTRA Light Engines, the filters are installed internally and are not user accessible. After-sales changes in the installed filter configuration will require a return for factory service. For SPECTRA X Light Engines, filters are user-exchangeable. The filters are installed in removable paddles, allowing users complete flexibility in terms of purchasing and using filters in addition to the initially installed set. One filter is applied to each solid state-light source (violet, blue, cyan, teal, green+yellow and red). Provision of both a green and a yellow filter enables selection of either 520-570 nm OR 570-600 nm wavelength ranges from the broad spectral distribution generated by Lumencor’s proprietary luminescent light pipe source. Near-IR output is a configuration option for the SPECTRA X that requires substitution of either the teal or red source. In the table below, bandpass specifications for Lumencor standard filters are listed, together with download links to transmission spectral data for each filter. Typical output power values for SPECTRA X Light engines, measured at the distal end of a 3 mm diameter liquid light guide, are also listed. Optical power varies with light source technology, light guide, and Light Engine model.
 CWL/FWHM = Center Wavelength/Full-width at half maximum transmission in nanometers.
 Filter not compatible with SPECTRA X light engines. Output power quoted for AURA light engine with 3 mm liquid light guide.
 Requires SPECTRA X with near-IR source option.