Wolf Cinema DLD-380FD - Manual (Page 4)

4
The BLU-Escent Laser Illumination Technology
The DLD-380FD projector – while physically and cosmetically similar to Wolf Cinema’s lamp-
based D-ILA projectors – uses a solid state illumination module consisting of a laser block and a
phosphor wheel (Figure 1).
Figure 1: Elements of the BLU-Escent Light Source
The laser block consists of 16 high powered blue lasers. These are extremely reliable and
stable for tens of thousands of hours. The blue laser light excites the phosphors along the edge of the
wheel, which creates yellow light. The yellow light is further separated into red and green
components – which, along with the blue laser light, provide for the R-G-B illumination needed for
the imaging block in the projector.
The DLD-380FD projector’s illumination system is further differentiated by its unique design
architecture. The BLU-Escent engine uses a reflective phosphor wheel, rather than a transmissive
one as may be used in other systems. As shown in Figure 2, this reflective approach reduces optical
loss and boosts luminance efficiency. The result is significantly higher contrast, excellent peak white
performance and increased system reliability.
Figure 2: Reflective vs. Transmissive Laser Phosphor Wheel Designs