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Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
Laser projection
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Laser projection

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  • 1. Laser Illumination Systems for  2D and 3D Digital Cinema Bill Beck Co‐founder  |  EVP Business Development Laser Light Engines, Inc. Salem, New Hampshire
  • 2. What is a laser? A device or system that converts electricity to visible  light with three desirable attributes: 1. Ultra‐high spatial BRIGHTNESS 2. Very LONG LIFETIME at full power 3. High EFFICIENCY electrical‐to‐RGB lumen conversion
  • 3. Why use lasers for D‐Cinema? • • • • • Studios want BRIGHT 3D Exhibitors want to SAVE MONEY Creatives want BETTER IMAGE QUALITY OEMs want the NEXT BIG PRODUCT Architects want to go BOOTHLESS
  • 4. How does a laser light source differ  from a Xenon lamp? Attribute UoM High pressure ‐ gas discharge  short arc creates bright “spot” Collimated to  moderately divergent Isotropic = all directions must be focused to small spot mm2 ‐ SR Very small   ‐ 0.001‐1 High relative to laser  4‐20 nm “Narrow” ‐ 0.01‐2 “Wide” ‐ 40‐80/primary Hours to  end of life 5,000‐100,000 to 80% output 25,000 ‐50,000  target 200‐2000 to 50% output 500‐1000 typical lm/wp‐watt 5‐10 2‐6  Output pattern Spectral bandwidth Lifetime Efficiency  Xenon Stimulated emission very high spatial brightness E to O Conversion Étendue  Laser
  • 5. RGB Laser Hierarchy • Device – individual (single) emitter     • Array or bar – multiple emitters per device   • Module – Aggregation – multiple devices or arrays  – Beamline – single, high power beam   • Engine – combination of R+G+B modules   • System – one or more engines per projector  200mW – 3W 3 ‐ 10 W 10 – 50 W 10 ‐ 40 W 20 ‐ 50 W 50 ‐ 100 W 50 – 600+ W
  • 6. Candidate Projection Lasers Laser Type Color  Center  Spectral  Power/d étendue λ BW evice Device  efficiency Life RGB nm nm W optical mm2 ‐ sr E to O % khrs Diode (1 emitter) R B 635‐645 445‐465 0.2‐2 0.5‐2 1‐2 1‐3 small 10 ‐ 25 10 ‐ 30 5 ‐ 10 10 ‐ 25 Diode array (or bar) R 635‐654 2‐3 3‐5 small 15‐23 7‐10 Doubled Diode  or array G B 531‐535 460‐464 0.1‐0.2 3‐6 0.001 5‐6 20‐38 Diode‐Pumped Solid‐ State   (frequency  doubled or tunable) R G B 607‐642 515‐555 445‐460 0.2 ‐ 10 0.1 ‐ 10 0.1 ‐ 6 10‐20 20‐120 10 0.0001 ‐ 0.01 5‐8 8‐15 3‐5 20 – 50 20 – 50 20 ‐ 50 Unit of measure
  • 7. Lumens vs. laser watts 544 nm, 666 lm/W 532 nm, 603 lm/W 615 nm, 301 lm/W 462 nm, 45 lm/W 446 nm, 21 lm/W 640 nm, 120 lm/W * 7
  • 8. Critical Requirements • • • • • First, do no harm – despeckle the image Full brightness 3D  Better image quality Reduced Total Cost of Ownership (TCO) New Builds and Retrofit 
  • 9. First, do no harm ! • • • • • Speckle contrast equivalent to Xenon All Projectors All Screens All content All 3D systems
  • 10. What is speckle? You know it when you see it… • Interference pattern artifact that occurs when a coherent,  narrow band light source is used to illuminate projector chips • Figure of merit is “Speckle Contrast Ratio” SCR% = Std deviation of pixel intensity ÷ mean pixel intensity • Measureable; level of offensiveness is subjective Observer, content, position, screen type visual acuity, all play a role • GREEN is most difficult to acceptably despeckle ‐ human vision  has highest sensitivity, acuity at GREEN wavelengths • RED speckle can also be offensive in certain content 10
  • 11. How to despeckle? • Increase illumination angle and… • Scramble polarization  and… • Spectrally broaden the laser output  (a lot) THIS IS THE KEY TO A FULLY DESPECKLED LASER LIGHT SOURCE 11
  • 12. Full Brightness 3D • Constant >11 fL to meet DCI … or more?   • 2‐3 times current brightness … pre‐3D cut • Acceptable speckle reduction on silver or  white, high gain screens  • For all types of content • In future, 3D should be designed in
  • 13. Image Quality Improvement • Higher Contrast Ratio ‐ blacker blacks; whiter whites – Lower étendue system; higher f# launch – Laser sync • Greater bit depth • Better brightness uniformity • Wider Color Gamut (WCG) 
  • 14. Lower TCO Drivers • • • • Laser lifetimes of 25-50,000 hours Eliminate lamp cost Eliminate lamp change cost 30-50% lower direct power consumption • Reduced HVAC make up air out the vent stack
  • 15. New Build or Retrofit? Both! • Lasers will enable more efficient, higher performance  next generation projectors – – – – Direct to chip RGB – no splitting prism Lower étendue optical system  Smaller chips  Smaller, simpler projection lenses • Fiber delivery enables universal laser engine retrofit 
  • 16. Slides to be added here to explain technology demo and clips
  • 17. Remaining Challenges • Standards for Speckle level and measurement – Test conditions, procedures and acceptance levels • Rationalize regulatory environment (LIPA) • Commercialization • Manufacturing scale‐up and cost reduction
  • 18. Summary and Conclusions  The technology is in hand to meet or exceed all the current  requirements for Laser Digital Cinema  Laser has been adapted to all types of D‐Cinema projectors  Laser works for bright 3D, HFR and WCG We need to gather stakeholder inputs and move  this promising capability forward 18
  • 19. bbeck@laserlightengines.com +1 617.290.3861 THANK YOU!

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