Device for determining the shape of the wave surface transmitted by a substantially parallel-faced transparent component
US5835219A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Jun 24, 1997 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Jun 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/303
- WIPO fieldMeasurement
- WIPO sectorInstruments
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.