Patent
Apparatus and method using a holographic optical element for converting a spectral distribution to image points
United States Patent and Trademark Office
11/06/2001
Abstract
A holographic optical element transforms a spectral distribution of light to image points. The element comprises areas, each of which acts as a separate lens to image the light incident in its area to an image point. Each area contains the recorded hologram of a point source object. The image points can be made to lie in a line in the same focal plane so as to align with a linear array detector. A version of the element has been developed that has concentric equal areas to match the circular fringe pattern of a Fabry-Perot interferometer. The element has high transmission efficiency, and when coupled with high quantum efficiency solid state detectors, provides an efficient photon-collecting detection system. The element may be used as part of the detection system in a direct detection Doppler lidar system or multiple field of view lidar system.
Details
- Title: Subtitle
- Apparatus and method using a holographic optical element for converting a spectral distribution to image points
- Creators
- Matthew J. McGill (Inventor)Vibart S. Scott (Inventor)Marzouk Marzouk (Inventor)
- Contributors
- The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (Assignee)
- Resource Type
- Patent
- Publisher
- United States Patent and Trademark Office; United States
- Patent
- US Patent 6,313,908; B1; United States Patent and Trademark Office (United States, Alexandria) - USPTO; Published; 09346698; 02/07/1999
- Language
- English
- Date published
- 11/06/2001
- Description audience
- PUBLIC
- Academic Unit
- Chemical and Biochemical Engineering
- Record Identifier
- 9984277457102771
Metrics
7 Record Views