Mirror design principles and tools
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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 Vertical and Horizontal Resolution Mirrors

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MIRROR DESIGN: Principles and Tools

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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


Vertical and Horizontal Resolution Mirrors


Vertical Resolution

Horizontal Resolution

Mirror Equations


MIXED MIRROR

  • Conventional Camera

  • Log Polar Camera


Mixed Mirror Design

Blind zone

Benefit: Enhanced Resolution for more complex environments


DIFFERENT METHODOS OF DERIVATIONS

(dh/d)t/dh/d) n for distances = [100 200 300 400] (cm)

Analytic derivation

Diff

Centered derivation


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


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


Astigmatism

Field Curvature

In: E. Hecht, “Optics”, Addison-Wesley


CONCLUSIONS

  • General principles of mirror designs

  • Specifications matching the various applications

  • Mixed mirror and flexible design tools

  • Mirro realization


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