Senthil, Kumar A and Vasu, RM (1989) Multiple imaging with an aberration optimized hololens array. In: Optical Engineering, 28 (8). pp. 903-908.
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The imaging performance of hololenses formed with four different geometries were studied through an analysis of their third-order aberration coefficients. It is found that the geometry proposed by Brandt (1969) gives the least residual aberration with minimum variation of this aberration with the reconstruction angle. When the ideal position of one of the construction beams is changed in order to generate a hololens array, the residual aberration is found to increase sharply, which in turn affects the image resolution among the multiplied images in the output. A hololens array was generated using Brandt's geometry with the help of a one-dimensional sinusoidal grating. The results of multiple imaging with the hololens array are presented. The image resolution is reasonably high and can be further improved by reducing the f-number of the hololenses.
| Item Type: | Journal Article |
|---|---|
| Publication: | Optical Engineering |
| Publisher: | The International Society for Optical Engineering |
| Additional Information: | Copyright of this article belongs to The International Society for Optical Engineering. |
| Keywords: | Aberration;holography;imaging techniques;fourier transformation;image resolution;point sources. |
| Department/Centre: | Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics |
| Date Deposited: | 06 Aug 2010 04:41 |
| Last Modified: | 06 Aug 2010 04:41 |
| URI: | http://eprints.iisc.ac.in/id/eprint/31144 |
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