Effects of diffraction efficiency on the performance of diffractive relay optics

Dean Faklis; Michael Hoppe

doi:10.1117/12.177354

10 June 1994 Effects of diffraction efficiency on the performance of diffractive relay optics

Dean Faklis, Michael Hoppe

Proceedings Volume 2218, Helmet- and Head-Mounted Displays and Symbology Design Requirements; (1994) https://doi.org/10.1117/12.177354
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

The requirements for head-mounted displays (HMDs) continue to become more demanding. Increased light throughput, reduced weight and higher optical performance mandates the use of new optical technologies. Diffractive optical elements can provide the optical designer additional degrees of freedom to develop more sophisticated lightweight color HMD systems. A method of design is discussed along with several manufacturing methods for producing diffractive elements including single-point diamond turning and laser pattern generation. Due to the unique characteristics of diffractive elements regarding efficiency and diffraction orders, it is vitally important to properly characterize and test these systems. The efficiency of a diffractive element can have a profound impact on the performance of the optical system; therefore, it is necessary to accurately measure the diffraction efficiency and correctly interpret the impact on the MTF. An example of a hybrid diffractive/refractive relay lens is presented to demonstrate the relationship between the MTF and diffraction efficiency.

Citation Download Citation

Dean Faklis and Michael Hoppe "Effects of diffraction efficiency on the performance of diffractive relay optics", Proc. SPIE 2218, Helmet- and Head-Mounted Displays and Symbology Design Requirements, (10 June 1994); https://doi.org/10.1117/12.177354

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