better by contrast 4 20 08
TRANSCRIPT
Th F t fThe Future ofRear ProjectionRear Projection
Jenmar Visual Systems1
Jenmar BlackScreen® The Future ofRear Projection
Agenda
Better by Contrast Rear Projection
Agenda
The Ideal Display.
Where Did RPTV Go Wrong?Where Did RPTV Go Wrong?
What Does RPTV Need?What Does RPTV Need?
Jenmar and Its Contributions.
Conclusion
The Ideal DisplayJenmar BlackScreen ®Better by Contrast
The Ideal DisplayThe Ideal DisplayBrightnessResolutionResolutionContrastSaturationSaturationViewing AnglesS l L SiScales to Large SizesLow CostAll in Normal or Elevated Ambient Light
The Ideal DisplayJenmar BlackScreen ®Better by Contrast
The Ideal Display (Continued)The Ideal Display (Continued)ThinCan Be Tiled (Video Wall)Can Be Tiled (Video Wall)
All in Normal or ElevatedAll in Normal or Elevated Ambient Light
Jenmar BlackScreen ® The Ideal DisplayBetter by Contrast
In Each of These Key AreasIn Each of These Key AreasRear Projection Has Advantages.
Brightness ScalableResolution LCoS & BlackScreen®Contrast BlackScreen®Saturation BlackScreen®Viewing Angles LambertianViewing Angles LambertianLarge Size Scalable
(Cost per unit area decreases with size) C i ll b h ll iLow Cost Lowest cost in all but the smallest sizes
Where Did RPTVGo Wrong?
Jenmar BlackScreen ®Go Wrong?
Better by Contrast
Narrow Vertical Viewing
Ignoring Ambient Light
i hRetreating to Large Screens as the Only Differentiator
Lack of a champion
What Does Rear Projection Need?
Jenmar BlackScreen ®Projection Need?
Better by Contrast
What Does Rear Projection Need?
S t i Vi iSymmetric Viewing
Ambient Light RejectionAmbient Light Rejection
Brightness
•Improved Light Sources
What Does Rear Projection Need?
Jenmar BlackScreen ®Projection Need?
Better by Contrast
What Does Rear Projection Need?
T d ff M d t th S t L lTrade‐offs Made at the System Level
•Wuhan Splendid OptronicsWuhan Splendid Optronics
Championing LCoS Rear Projection
Marketing
•Rear Projection – Better Image Quality
Thi Th Gh t F t•Thinness – The Ghost Feature
Jenmar and its Contributions
Jenmar BlackScreen ®Contributions
Better by Contrast
J Bl kS ®Jenmar BlackScreen ®Lenticular Screens
Symmetric ViewingResolutionAmbient light rejection•Contrast Preservation•Color Saturation Preservation
Moiré EliminationMoiré Elimination
Jenmar BlackScreen ®Jenmar BlackScreen ®Better by Contrast
Jenmar BlackScreen BlackScreen Operation
Jenmar BlackScreen ®Jenmar BlackScreen ®Better by Contrast
Bead Aperture
Outline of Glass Bead(Reference only ‐ Not visible)
~90% of the area is black
Jenmar BlackScreen BlackScreen Operation
Jenmar BlackScreen ®Jenmar BlackScreen ®Better by Contrast
Jenmar Visual Systems 13
BlackScreen Operation
Jenmar BlackScreen ®Better by Contrast
Diffusion required to lower vertical gain
Jenmar BlackScreen Lenticular Operation
Jenmar BlackScreen ®Better by Contrast
~70% of the area is black
Jenmar BlackScreen Lenticular Operation
Jenmar and its Contributions
Jenmar BlackScreen ®Contributions
Better by Contrast
Over 200 beads per mm²Over 200 beads per mm
Symmetric Bead PackingSymmetric Bead PackingRandom bead packing
High Resolution
Average Bead Diameter = 70µ(800 lpi @ modulation Depth of 0.5)(50” 1080P = 36lpi)
Jenmar and its Contributions
Jenmar BlackScreen ®Contributions
Better by Contrast
Ambient Light Rejection
ConclusionJenmar BlackScreen ®Better by Contrast
Rear Projection Must Re‐think How to CompeteRear Projection Must Re think How to Compete
•Equal viewing angles
B tt I•Better Image
•Better pricing
Technologies Exist To Allow This Today
WSOT LCoS
Advanced Light Sources
Jenmar BlackScreen ®
Vision Hubei ‐Wuhan ‐WSOT