MIRROR DESIGN: Principles and Tools

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MIRROR DESIGNPrinciples and Tools

• Cláudia Deccó, José Santos-Victor, José Gaspar,
  Niall Winters
• Instituto Superior Técnico
• Lisbon, Portugal
• ccgdecco,jasv,jag,niall_at_isr.ist.utl.pt
• Omniviews Review Meeting
• IST, Lisbon,
• September, 2001

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Vertical and Horizontal Resolution Mirrors
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Mirror Equations

• Vertical Resolution
• Horizontal Resolution

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MIXED MIRROR

• Conventional Camera
• Log Polar Camera

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Mixed Mirror Design
Blind zone
Benefit Enhanced Resolution for more
complex environments
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DIFFERENT METHODOS OF DERIVATIONS (dh/d?)t/dh/d?)
n for distances 100 200 300 400 (cm)
Analytic derivation
Diff
Centered derivation
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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

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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

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Astigmatism
Field Curvature
In E. Hecht, Optics, Addison-Wesley
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CONCLUSIONS

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