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Measuring the in-process figure, final prescription, and system alignment of large optics and segmented mirrors using lidar metrology
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Eegholm, Bente Ohl, Raymond Saif, Babak |
| Copyright Year | 2011 |
| Description | The fabrication of large optics is traditionally a slow process, and fabrication capability is often limited by measurement capability. W hile techniques exist to measure mirror figure with nanometer precis ion, measurements of large-mirror prescription are typically limited to submillimeter accuracy. Using a lidar instrument enables one to measure the optical surface rough figure and prescription in virtuall y all phases of fabrication without moving the mirror from its polis hing setup. This technology improves the uncertainty of mirror presc ription measurement to the micron-regime. |
| File Size | 81210 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120000458 |
| Archival Resource Key | ark:/13960/t8nd0z54s |
| Language | English |
| Publisher Date | 2011-09-01 |
| Access Restriction | Open |
| Subject Keyword | Fabrication Precision Measuring Instruments Metrology Optical Equipment Optical Radar Segmented Mirrors Ntrs Nasa Technical Reports ServerĀ (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |