Waveguide holographic periscopes with two-coordinate multiplication of the exit pupil based on the one-dimensional diffraction grating

Putilin N.А., Dubynin S.E., Putilin A.N., Kopenkin S.S., Borodin Y.P.

For Russian citation (Opticheskii Zhurnal):

Путилин Н.А., Дубынин С.Е., Путилин А.Н., Копенкин С.С., Бородин Ю.П. Волноводные голографические перископы с двухкоординатной мультипликацией выходного зрачка на одномерной дифракционной решетке // Оптический журнал. 2025. Т. 92. № 7. С. 35–51. http://doi.org/10.17586/1023-5086-2025-92-07-35-51

Putilin N.A., Dubynin S.E., Putilin A.N., Kopenkin S.S., Borodin Yu.P. Waveguide holographic periscopes with two-coordinate multiplication of the exit pupil based on the one-dimensional diffraction grating [in Russian] // Opticheskii Zhurnal. 2025. V. 92. № 7. P. 35–51. http://doi.org/10.17586/1023-5086-2025-92-07-35-51

For citation (Journal of Optical Technology):

Abstract:

Subject of study. Waveguide holographic periscopes based on the one-dimensional diffraction grating and their application for multiplying the exit pupil of augmented reality displays. Aim of study. The aim of the paper is to find higher energy efficient variants for waveguide holographic periscopes design. Method. The study involved computer modeling using original software. Several samples of waveguide holographic periscopes were developed and models of augmented reality displays based on them were created in the series of experimental studies. Main results. It has been determined that the 2nd diffraction orders exist when rays from a waveguide fall on a diffraction grating, its intensity can exceed the intensity of the 1st diffraction orders in some cases. The multiplied rays at the output of the waveguide holographic periscope remain parallel. To a first approximation the system remains anaberrational. The two-dimensional ray multiplication has been revealed by using of one-dimensional surface-relief diffraction grating with oblique incidence of the beams. Practical significance. The proposed scheme for constructing a waveguide holographic multiplexer of the exit pupil provides greater energy efficiency (up to 8–10 times for certain angles of the field of view) with greater simplicity of the scheme. The proposed solutions can be used in the development of head up displays.

Keywords:

waveguide holographic periscope, augmented reality displays, two-dimensional multiplication of the exit pupil

Acknowledgements:

the work was supported by the Priority 2030 program, grant № 075-15-2024-225

OCIS codes: 090.2820, 090.2890

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