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Analysis and design of a refractive virtual image system
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kahlbaum, W. M. |
| Copyright Year | 1977 |
| Description | The optical performance of a virtual image display system is evaluated. Observation of a two-element (unachromatized doublet) refractive system led to the conclusion that the major source of image degradation was lateral chromatic aberration. This conclusion was verified by computer analysis of the system. The lateral chromatic aberration is given in terms of the resolution of the phosphor dots on a standard shadow mask color cathode ray tube. Single wavelength considerations include: astigmatism, apparent image distance from the observer, binocular disparities and differences of angular magnification of the images presented to each of the observer's eyes. Where practical, these results are related to the performance of the human eye. All these techniques are applied to the previously mentioned doublet and a triplet refractive system. The triplet provides a 50-percent reduction in lateral chromatic aberration which was the design goal. Distortion was also reduced to a minimum over the field of view. The methods used in the design of the triplet are presented along with a method of relating classical aberration curves to image distance and binocular disparity. |
| File Size | 2340554 |
| Page Count | 77 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780004886 |
| Archival Resource Key | ark:/13960/t2z36mf4j |
| Language | English |
| Publisher Date | 1977-11-01 |
| Access Restriction | Open |
| Subject Keyword | Optics Phosphors Display Devices Image Intensifiers Flight Simulators Image Tubes Cathode Ray Tubes Thermochromatic Materials Lens Design Visual Perception Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
