Waveguide display system for eliminating chromatic aberration and based on based holographic diffraction optical element
A diffractive optical element and display system technology, which is applied in the field of waveguide display systems, can solve the problems of reducing the diffraction efficiency of waveguide display systems, increasing the volume and weight of holographic waveguide systems, and being inconvenient to wear and use.
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[0015] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.
[0016] This embodiment provides an achromatic waveguide display system based on a holographic diffractive optical element, including an input coupler, a waveguide, and an output coupler, wherein the input coupler is a transmissive planar holographic grating, and the output coupler is a volume Holographic gratings, such as figure 1 shown.
[0017] In this embodiment, the transmissive planar holographic grating is obtained through the interference of two beams of plane waves. According to the basic theory of the grating, during the recording process, the period of the obtained holographic grating can be expressed by formula (1):
[0018] d λ rec ...
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