NEWS & BLOG

22
Dec

I/ITSEC 2015 – and the move away from lamp to solid-state projection

In December I was lucky enough to get to I/ITSEC and meet once more with many friends in this industry. 

I/ITSEC (see iitsec.org), a perennial event that’s always right after Thanksgiving in Orlando, is a conference and exhibition specifically focused on Training & Simulation.

For us at GBvi the main interest is projection displays – projector companies, systems integrators and related technologies.

DLP projectors continue to dominate in dome and high-light-output applications and indeed continue to improve, for example with motion blur performance, wobbulation to increase addressability (a subject for another blog, perhaps…) and ultra-short throw lens options.

A notable trend that many have commented on is the move away from lamp illumination towards solid-state – LED and laser phosphor illumination to be specific.  LED illumination has been around a while now and has successfully occupied niche applications in simulation visual systems where the very stable output and low maintenance overhead is of most importance, while the relatively limited light output is enough – particularly in cross-cockpit collimated visual systems.

Laser phosphor projectors extend the benefits to higher-output applications such as domes, as several thousand lumens are now available per unit.  So lamps beware – the writing is on the wall!

A notable non-trend, however, is that DLP projectors are stuck with relatively low native sequential contrast (full white to full black).  Considering that laser phosphor illumination is likely to substantially reduce lifetime related issues with LCOS projectors – its main weakness – and that LCoS still has the edge with native pixel counts (‘resolution’) and sequential contrast, it seems that competition between these projection technologies is set to continue, at least within the T&S market.

Watch this space…..

16
Dec

Happy Christmas from GBvi

Happy Christmas and a prosperous 2016 from all of us at GBvi – we look forward to another year of great partnerships and collaborations.

20
Aug

2015 Electrosonic Open Day

GBvi will be at the UK HQ of Electrosonic in Dartford on the 9th and 10th of September for their annual technology open event.

It’s shaping up to be an exciting event, with many new technology demos and workshops scheduled.

For more information on the event, click here.

29
Jul

The Importance of Optical Blending

Video projectors have limited sequential contrast. This means that, in dark scenes, background leakage light is always visible.

When multiple projectors are overlapped and electronically blended to form a larger image, there will be unwanted double-intensity background leakage. This becomes most apparent when dark-scenes are projected.

The image is an exaggerated example, showing how ‘leakage’ black levels cause unwanted bright-ups in the overlap zones, and the importance of optical blending.

GBvi Optical Blend Illustration