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10 June 1994 Effects of diffraction efficiency on the performance of diffractive relay optics
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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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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