发明名称 |
METHOD AND APPARATUS FOR ACCURATE IMAGING WITH AN EXTENDED DEPTH OF FIELD |
摘要 |
A method and apparatus involve using optics to direct radiation from a scene along an optical axis, the optics having a chromatic dispersion that is a function of a characteristic spectral signature for the scene so as to produce a chromatic blur that, for an extended depth-of-field region, is substantially spatially constant along the optical axis. A different method involves: identifying for a characteristic scene a spectral response curve; determining a plurality of different wavelength nodes dividing the area under the spectral response curve into a plurality of substantially equal segments; generating a mapping relationship that maps each of the wavelength nodes to a respective one of a plurality of focal points spaced substantially equally along the optical axis; and configuring the optical system as a function of the mapping relationship.
|
申请公布号 |
CA2754264(A1) |
申请公布日期 |
2010.09.10 |
申请号 |
CA20102754264 |
申请日期 |
2010.03.05 |
申请人 |
RAYTHEON COMPANY |
发明人 |
SZAPIEL, STANISLAW;GREENHALGH, CATHERINE A.;DENIS, DONALD J. |
分类号 |
G02B13/14;G02B13/18;G02B27/00 |
主分类号 |
G02B13/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|