Innovations in Optics has launched LumiBright 3300B UV-LED Illuminators for digital light processing (DLP) applications such as 3D printing, maskless lithography, prepress digital imaging, phototherapy, and refractive surgery.
The UV-LED technology offers more reliable and economical advantages over lasers and arc lamps in UV DLP systems. High optical power over 20W matches the power output of fiber-coupled laser diode bundles at lower cost.
The 3300B series comprises a densely packed UV-LED array. Standard LED centre wavelengths include 365nm, 375nm, 385nm, 395nm and 405nm. Single or multi-wavelength configurations are available. The combination of different wavelengths optimises the spectral balance of the exposure for all types of UV processed materials.
The series features a UV-LED array coupled to a high efficiency, non-imaging collection optic with an aspect ratio matched to DLP chips. An integral imaging optic is telecentric over the entire DLP and is constrained in angle to match the micromirror tilt angle. Water-cooling allows the UV-LED array to be operated at a very high current density. The result is an extremely high power, highly uniform UV-LED illuminator which provides unprecedented speed and resolution for UV DLP applications.
Up to an 18-die UV-LED array can be integrated into the 3300B series which can be driven and modulated independently for precise exposure control in direct imaging systems.
Innovations in Optics has also developed an OEM driver with Ethernet and serial control to support this feature. The driver provides independent current control to each of the LED die to achieve optimal performance and lifetime.
Thermal management in the 3300B series includes a water heat exchanger and an onboard thermistor for temperature monitoring. In addition to multi-wavelength, other user options include a selection of non-imaging collection optics to match various DMD sizes, up to two photodetectors with optional integral spectral bandpass filters for feedback control or exposure monitoring, fixed or adjustable mounting flanges, and straight or right-angle hose barbs for the water heat exchanger.