MIRROR DESIGN: Principles and Tools - PowerPoint PPT Presentation

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MIRROR DESIGN: Principles and Tools

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  1. Cláudia Deccó, José Santos-Victor, José Gaspar, Niall Winters Instituto Superior Técnico Lisbon, Portugal {ccgdecco,jasv,jag,niall}@isr.ist.utl.pt Omniviews Review Meeting IST, Lisbon, September, 2001 MIRROR DESIGN:Principles and Tools

  2. Vertical and Horizontal Resolution Mirrors

  3. Vertical Resolution Horizontal Resolution Mirror Equations

  4. MIXED MIRROR • Conventional Camera • Log Polar Camera

  5. Mixed Mirror Design Blind zone Benefit: Enhanced Resolution for more complex environments

  6. DIFFERENT METHODOS OF DERIVATIONS (dh/d)t/dh/d) n for distances = [100 200 300 400] (cm) Analytic derivation Diff Centered derivation

  7. MIXED MIRROR PROTOTYPE • Ultra Precision Lathe • Rank Pneumo • Model ASG-2500 (Aspheric Surface Generator) • Repeatibility de 10nm • Precision de 5nm • 50kg of maximum load on the plaque • Position control made by an interferometer of HeNe HP • Controler: AB 8200

  8. MIXED MIRROR • Specs Radius : 3cm Fovea field of view : 28-52 degrees Retina field of view : 80-115 degrees f : 25mm height: 70cm distance (d): 200cm

  9. Astigmatism Field Curvature In: E. Hecht, “Optics”, Addison-Wesley

  10. CONCLUSIONS • General principles of mirror designs • Specifications matching the various applications • Mixed mirror and flexible design tools • Mirro realization