Folding extension display optical device based on prism coupling

Abstract

The invention provides a folding extension display optical device based on prism coupling. The folding extension display optical device comprises a display light source, a collimating lens, a coupling prism, an optical wave coupling input component, an optical wave folding transmission waveguide, an optical wave coupling output component and an optical wave unfolding component, wherein the display light source is used for emitting display optical waves for displaying the needed image; the collimating lens is used for collimating the optical waves emitted by the light source; the coupling prism is used for changing the propagation direction of collimated optical waves; the coupling input component is used for coupling inputting an outside optical signal into a substrate; a folding transmission substrate is used for performing reflection propagation on the coupled and input optical waves so as to reach an output position; the coupling output component is used for coupling and outputting the optical waves from the substrate; and the optical wave unfolding component is used for performing beam expansion on the coupled and output optical waves. The folding extension display optical device disclosed by the invention has the characteristics of compact structure, flexibility, large view field, light weight and the like and can be applied to the fields of wearable display, uniform illumination and mobile display.

Description

technical field [0001] The invention relates to a display optical device, in particular to a folded and expanded display optical device based on prism coupling that can be used for wearable image display. Background technique [0002] Various display systems that are currently popular, such as wearable displays, flat panel displays, and notebooks, usually use optical components to transmit and display the required image information. For example, the virtual display system uses an optical lens to virtual display pictures at a certain distance in front of the human eye, so that it is possible to conveniently observe changes in the surrounding scenery while browsing the required electronic information content, combining virtual and display. Usually, the core optical components of this type of display system mainly consist of three parts: light wave coupling input optical components, light wave transmission substrate, and light wave coupling output display components. Therefo...

AI Technical Summary

Problems solved by technology

Although conventional imaging methods can meet the required field of view, as the angle of view increases, the overall weight and volume of the optical system will also increase. The design of a large optical system has become the trend of this type of imag

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