Dispersed Hartmann sensor and method for mirror segment alignment and phasing

Dispersed Hartmann sensor and method for mirror segment alignment and phasing

A dispersed Hartmann sensor includes a Hartmann lenslet in combination with a dispersive element, whereby a Hartmann spot formed by light passing through the Hartman lenslet is dispersed parallel to the phase step of the light. The shape of the blur spot can then be examined at many wavelengths. Mea...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: WIRTH ALLAN
Format: Patent
Sprache:eng
Schlagworte:
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
RADIATION PYROMETRY
TESTING
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Beschreibung
Zusammenfassung:A dispersed Hartmann sensor includes a Hartmann lenslet in combination with a dispersive element, whereby a Hartmann spot formed by light passing through the Hartman lenslet is dispersed parallel to the phase step of the light. The shape of the blur spot can then be examined at many wavelengths. Measuring the size of a discontinuity in the wavefront of light is then performed by forming a single image of the wavefront, dispersing the image in wavelength using a combination of a Hartman lenslet and a dispersive element, and analyzing the dispersed image along a dispersion direction of the dispersed image to measure the size of the discontinuity.