QED has simplified and refined the art of blended rear projection utilising the latest high brightness high definition projectors from Christie. From all viewing angles there are no visible blends.
Using the Christie HD12Ks and a new specialised rear projection surface QED set out to deliver the perfect rear projected ultrawidescreen system for last month's roadshow for Wates Construction. With four shows to do in five days it was imperative that the set-up was quick and easy and that the amount of equipment used was kept to a minimum - but most importantly the blends just had to be invisible.
Two multi-head Macbook Pros, one Spyder and two HD12Ks provided the basic ingredients for the successful recipe. The super-high brightness of the HD12Ks simply provided the required level of brightness to blast through the thick screen material.
The 0.67:1 lenses enabled the 27.5ft wide image to be achieved with only 14ft of total rear projection distance and with only two projectors to blend the rig could not have been simpler. The combination of the two native 1920 x 1080 HD panels delivered stunning on-screen resolution and the substantial lens shift and geometric correction within the projectors enabled them to be aligned to perfection.
Being able to deliver such astonishing blended results allows presentations to be created free of artistic restriction and for events to be planned knowing that the desired quality will be achieved. There is no need to be concerned about designing backgrounds to hide the blend areas when the screen is viewed from wide angles and there is no need to worry about being able to fit ultrawidescreens into rooms with low ceiling heights.
Blend-free results from all viewing angles can only be achieved using screen materials possessing extra wide angle viewing properties and by employing very high brightness projectors. The HD12Ks only use a 13amp power supply and yet they still output a true 12,000 ANSI lumens regardless of which lenses are fitted. Using the same "recipe" and to achieve the same quality and brightness for larger rear projection ultrawidescreens the 17,500 ANSI lumens Christie HD18K projectors would be required.
January 2008