Abstract
An optical spatial filtering system, designed to operate with totally incoherent light sources is presented. When correlating with such polychromatic light sources, one major problem is the dependence of the correlation response scaling on wavelength. A theoretical system that exactly compensates for this problem is analyzed. A practical configuration for implementing such a system, satisfying the theoretical solution up to first order in wavelength, is proposed. This configuration includes a combination of diffractive and refractive lenses and a gray scale filter. The possibility of higher order approximations is considered.
| Original language | English |
|---|---|
| Pages (from-to) | 278-279 |
| Number of pages | 2 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3749 |
| State | Published - 1999 |
| Externally published | Yes |
| Event | Proceedings of the 1999 18th Congress of the International Commission for Optics (ICO XVIII): Optics for the Next Millennium - San Francisco, CA, USA Duration: 2 Aug 1999 → 6 Aug 1999 |