Share Email Print

Optical Engineering

Visual resolution characteristics of an afocal array optical system for three-dimensional images
Author(s): Fumio Okano; Jun Arai; Makoto Okui
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The visual-resolution characteristics of an array, comprising many elemental afocal optical units, for an optical viewer are investigated. First, it is confirmed by wave optics that lightwaves exiting the array will converge, forming a three-dimensional optical image. Next, it is shown that the convergence point and resolution characteristics depend on the angular magnification of the afocal unit. When the magnification is 1.0, the lightwaves focus on the convergence point, and the resolution characteristics depend only on the diffraction of the afocal units. At magnifications other than 1.0, the lightwaves do not focus on the convergence point, decreasing the resolution as a result. To clarify this result quantitatively, we determined the viewing distances at which the alignment of the afocal units is not perceptible when an optical image formed by the array is viewed by an observer, and we calculated the modulation transfer functions normalized by the viewing distance.

Paper Details

Date Published: 1 February 2007
PDF: 9 pages
Opt. Eng. 46(2) 023201 doi: 10.1117/1.2709623
Published in: Optical Engineering Volume 46, Issue 2
Show Author Affiliations
Fumio Okano, NHK Science & Technical Research Labs. (Japan)
Jun Arai, NHK Science & Technical Research Labs. (Japan)
Makoto Okui, NHK Science & Technical Research Labs. (Japan)

© SPIE. Terms of Use
Back to Top