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Method and apparatus for producing an image from a transparent object
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lee, S. H. |
| Copyright Year | 1977 |
| Description | The contrast produced from a photographic transparency is controlled by placing the transparency between a pair of partially reflecting mirrors forming walls of an optical cavity. Mirrors trap a collimated laser beam illuminating the transparency so that at least a portion of the beam energy is passed through the transparency plural times. The distance that the light beam travels between the mirrors is controlled as a function of the wavelength of the beam energy to control the phase of light interference in the beam passing through the transparency, thereby controlling the intensity of the beam derived from the mirror downstream of the transparency. |
| File Size | 628688 |
| Page Count | 7 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770021988 |
| Archival Resource Key | ark:/13960/t8vb2xv67 |
| Language | English |
| Publisher Date | 1977-07-12 |
| Access Restriction | Open |
| Subject Keyword | Optics Wavelengths Imaging Techniques Optical Equipment Photographic Processing Optical Reflection Mirrors Laser Applications Transparence Image Contrast Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
