A Beam-Combining Eyepiece Configuration

Paul R. Yoder

doi:10.1117/12.7971581

Abstract

A beam-combining "cube "prism has been incorporated into the eyelens of a simple magnifier type eyepiece in order that a collimated virtual image of a cathode ray tube presentation may be seen superimposed upon the normal direct view of the observer's environment. This unique prism !eyepiece configuration has facilitated the design of high resolution head-mounted optical displays with apparent fields of view as large as 40° while minimizing the physical size of the projection optics. By use of moderately high index glass in the prism, a significant reduction in lens aperture as compared to that required with the equivalent beam-combining mirror arrangement can be achieved. The major features of this special eyepiece are discussed and some useful applications of the device are described.

Citation Download Citation

Paul R. Yoder, Paul R. Yoder, } "A Beam-Combining Eyepiece Configuration," Optical Engineering 9(1), 090105 (1 November 1970). https://doi.org/10.1117/12.7971581 . Submission:

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