Fabrication of aspheric surfaces through controlled deformation of the figure of spherical reflective surfaces
US5089915A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Jun 11, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0058
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An aspheric mirror, for example in the form of an off-axis parabolic mirror or a toric mirror, that includes a first element having a front surface which defines a spherical reflector and a spaced apart rear surface. The spherical reflector includes a constant radius of curvature, an X-axis with an X-axis radius of curvature and a Y-axis with a Y-axis radius of curvature. The first element possesses a first rigidity factor. A second element includes a front surface sized to mate with the rear surface of the first element along an interface zone. The second element possesses a second rigidity factor. An interface contour device produces a differential contour within the interface zone between the first and second elements. The interface contour device is aligned to modify the X-axis radius of curvature of the shperical reflector without significantly modifying the Y-axis radius of curvature. A compression device compresses the first and second elements together to deflect the first element relative to the second element to modify the X-axis radius of curvature without substantially modifying its Y-axis radius of curvature to produce an aspheric mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.