Device for determining the shape of the wave surface transmitted by a substantially parallel-faced transparent component
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United States of America Patent
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Nov 10, 1998
Grant Date -
N/A
app pub date -
Jun 24, 1997
filing date -
Jul 10, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a device for determining the shape of the wave surface transmitted by a substantially parallel-faced transparent component (P), which includes a support (S) for the component (P), an interferometer (I), means for moving the support (S), and a control unit which determines, from the measurements by the interferometer (I), the shape of said wave surface. According to the invention, the support (S) is made in such a way as to let the light beam (FM) emitted by the interferometer (I) and transmitted by the component (P), which is transparent, pass through it, and said device includes a swivelling mirror (M1) arranged approximately orthogonally to the beam (FM) transmitted by the component and oriented in such a way as to send said beam (FM) back in the emission direction (D1).
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