Waveguide device and augmented reality equipment

Abstract

The invention relates to a waveguide device and augmented reality equipment. The waveguide device comprises a waveguide substrate, a geometrical optical input element and a geometrical optical outputelement. The geometrical optical input element is arranged in the optical wave input area of the waveguide substrate and used for coupling input optical waves into the waveguide substrate in a geometrical optical mode; the waveguide substrate is used for transmitting light waves coupled into the waveguide substrate through the geometrical optical input element to the geometrical optical output element in a total reflection mode, the waveguide substrate comprises a first substrate and a second substrate, and the lower surface of the first substrate is connected with the upper surface of the second substrate; the geometrical optical output element is arranged in the optical wave output area of the waveguide substrate and used for outputting the optical waves transmitted to the geometrical optical output element, the geometrical optical output element comprises a semi-permeable membrane array embedded in the first substrate, and the semi-permeable membrane array comprises a plurality of semi-permeable membranes which are arranged in parallel and obliquely.

Description

technical field [0001] The present disclosure relates to the technical field of augmented reality display, in particular to a waveguide device and augmented reality equipment. Background technique [0002] With the development of virtual reality and augmented reality technology, near-eye display devices have developed rapidly. The near-eye display of augmented reality is a technology that images light fields in real space, and can take into account both virtual and real operations. Coupling image light into the human eye using traditional optical waveguide components has been used, including the use of prisms, mirrors, transflective waveguides, holograms, and diffraction gratings. The optical waveguide display system uses the principle of total reflection to realize light wave transmission, combined with diffraction elements to realize directional transmission of light, and then guides the image light to the human eye, so that users can see the projected image. [0003] At ...

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Problems solved by technology

[0003] At present, there is an optical waveguide array optical waveguide, which uses multiple semi-transparent and semi-reflective films to form a semi-transparent film array, and then realizes a penetrating display with exit pupil expansion, and has a larger field of view and eye movement range, but , the structural characteristics of the semi-transparent and semi-reflective film cause the ghost image problem that the ghost image cannot be separated from the normal image, which seriously affects the imaging quality

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