Visual optical imaging device and binocular near-eye display using same

Abstract

The present invention relates to a visual optical imaging device and an ultrathin optics transmission-type near-eye display by using the same. The near-eye display is formed by bilaterally symmetrically arranging two same visual optical imaging devices, each visual optical imaging device including one free-form surface waveguide component and one projection optics assembly; and the projection optics assemblies are used for projecting image signals emitted by an image source component to the light incident plane of the free-form surface waveguide component, the light ray is propagated in the free-form surface waveguide component to an exit pupil direction by means of a total reflection condition and enters users' glasses after being emitted from the exit surface when the total internal reflection condition is satisfied, and the light rat in the transmission direction is able to normally transmit to enter users' eyes, so that the ultrathin near-eye display is realized.

Description

technical field [0001] The invention relates to a visual optical imaging device and an ultra-thin optical transmissive near-eye display using the same, in particular to an ultra-thin visual display technology combining a free-form surface and a waveguide element. Background technique [0002] Consumer electronics products have developed vigorously in recent years. After smart phones, consumers have generally known the concepts of virtual reality (virtual reality) and augmented reality (augmented reality), and are chasing related concept products as a new experience technology. try. In the field of VR, companies such as Samsung, Sony, Oculus, and HTC have produced products that provide consumers with VR display devices that can be used independently with the help of smartphones; while in the field of AR, the products of companies such as Google and Microsoft are also Staying at the stage of conceptual product development and display, the number of commercially available prod...

AI Technical Summary

Problems solved by technology

Among the above-mentioned products, except for Microsoft’s Hololens, most of them adopt non-optical transmissive solutions, that is, users are separated from the real world when using them, or they can only target the user’s single eye, resulting in a small viewing angle and affecting User's Visual Experience

At the same time, in order to pursue the sense of immersion, the optical components of most existing VR products located in front of the user's eyes have a relatively large thickness and are closed around the eyes. When wearing it, a counterweight system is even required to balance the weight, which increases the burden on the user's head. , it is impossible to realize a thin and light optical transmissive binocular near-eye display

[0003] In order to realize the ultra-thin optical transmissive near-eye display solution, some designs introduce free-form prism elements, and realize optical transmission by means of catadioptric and compensating prisms. In some cases, the thickness of the optical system of this scheme cannot be very thin, which limits the further thinning of the binocular near-eye display; while other designs use the planar light waveguide scheme, using the light inside the planar waveguide element. Reflection effectively reduces the thickness of the optical element, but the planar waveguide element cannot provide optical power and needs to be used with a complex projection system

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