Peter Lude’ (now with Real D) dives straight into the deep end of the many questions buzzing about laser ILLUMINATED (his emphasis) projecton, ranging from safety to speckling. He even provides a quick Cliff Notes answers to those questions (see above). He then outlines the afternoon (in two parts)
Lude’ starts by explaining the different laser projector types, starting with spot scanners (rarely used, only for pico projectors in low energy), then line scanner (GLV projectors – currently not available), then LIPs (laser illuminated projectors – which is what we have been seeing here at IBC). This last category is one where the Xenon lamp-based optical architecture is replaced with a full laser based optical architecture, or a laser/phosphor based optical architecture which typically only uses one colour (blue) that gets changed into white light.
Lude’outlines that lasers have the potential of:
- Dramatically improved image quality;
- Substantially lower power consumption (20-30% less than comparable Xenon)
- Lower operating cost (everything from A/C to lamp replacement);
- Reduced environmental impact;
- Flexible design / boothless theatre.
There are over a dozen laser illuminated projectors that you can buy today, most of them small projectors for conference rooms. There are about 90,000 units sold per year and 1st LIP was launched in 1Q13. Around 10,000 units sold per year would requie FDA variance. Currently all devices that contain lasers are regulated, whether or not they actually emit a laser (like BluRay players). The goal is a new laser notice by January 2015 in terms of regulations to reflect the new IEC Edition 3.
Jan Daem (Barco) comes up to stage to talk about bringing regulaion up to date with technology, but from a European perspective. Begins by talking in technical detail about what a saler is. “Thermal induced retinal damage” measurement makes it sounds scary. Talks about national and Eurpean regulation and legislation. Final situation will be Class1RGX. (This presentation has a feel of engineer white paper. Not much that I can usefully summarise.)
Matt Cowan (ETC) whose title is ‘What do we do with all that Color?’ Will deploying different laser primary selection have an impact on color grading, does BT.2020 reqiure narrow band primaries. He then does “100 years of color science in 1 slide” looking at ‘what we see, what we measure.’ He observes that color spaces changes throughout the workflow. “There’s no colors that cant be defined with X’Y”, even colors that we cannot see,” Cowan affirms. He explains to the audince how we can get any colour by mixing red, green and blue light. “Mathematics provides exact conversions among different color representations.” How does projector handle XYZ color? Through projector calibration, Cowan explains. He then did a primary color comparison, highlighting the differences between Rec.709 and BT.2020. For speckling, multiple wavlengths get close to 2020.
Don Shaw (Christie) starts off by discussing why Christie is building laser projectors. “Not because it is cool or because Barco is doing, it is because that’s where cinemas are going.” Highlights Premium Large format (PLF) that offers customers a differentiated experience (and a significant increase in box office proceeds). 3D movies allow a >30% upcharge. But 3D atttendance is declining in (US) domestic market. Novelty has worn off. “This will happen in international markets unless we fix the problem.” LIPs are that fix, apparently.