AR (Augmented Reality) optical device and wearable AR device

Abstract

The invention provides an AR (Augmented Reality) optical device and a wearable AR device, which belong to the technical field of augmented reality imaging. The AR optical device comprises a band-passpolarizing beam splitter and a reflector, image light emerging from an image source is divided into polarized light in a first direction and polarized light in a second direction after passing throughthe band-pass polarizing beam splitter, wherein the emerging direction of the polarized light in the first direction gets away from the image source, and the polarized light in the second direction goes to the reflector, then, after being reflected by the reflector, goes to the band-pass polarizing beam splitter, is transmitted by the band-pass polarizing beam splitter, and finally goes to humaneyes. The light within a wavelength passband range is polarized and splitted by a band-pass polarizing beam splitting film, while the light outside the wavelength passband range can be completely transmitted, consequently, while the efficiency of light source energy utilization is not decreased, the light transmittance for world observation by a wearer is increased, moreover, the external visibility of the eyes of the wearer is increased, and thereby sociability is increased.

Description

technical field [0001] The present invention relates to the technical field of augmented reality imaging, in particular to an AR optical device and a wearable AR device. Background technique [0002] AR (Augmented Reality, Augmented Reality) is also known as mixed reality. Its principle is to apply virtual information to the real world through computer technology. The real environment and virtual objects are superimposed on the same picture or space in real time. [0003] Currently, people can interact with the real world through wearable devices, such as AR glasses or AR helmets. Such as figure 1 A schematic structural diagram of an AR optical device in an existing AR glasses or an AR helmet is shown, as shown in figure 1 As shown, the existing AR optical device optical system includes an image source 11, a beam splitter 3, a curved half mirror 4 and a lens 12 positioned above the beam splitter 3, the image source 11 is arranged on the top of the optical system, and the i...

AI Technical Summary

Problems solved by technology

[0004] The existing AR optical device has the following defects: part of the light of the image light passes through the beam splitter 3, a part of the light is reflected light, and a part of the light is transmitted light, and the reflected light through the beam splitter 3 is directed to the curved half mirror 4, and part of the light is retransmitted Reflected by the curved half-reflector 4 and directed to the beam splitter 3, the light from the image source 11 is reflected and transmitted, causing a large amount of light to be lost. When the wearer observes the surrounding environment through the device, the light transmittance of the image source light Low light energy utilization rate, at the same time, due to a large number of interfering light sources, the wearer's eyes cannot be seen from the outside, resulting in poor sociability

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