AR display device and wearable AR device

Abstract

The invention provides an AR display device and a wearable AR device, belonging to the technical field of augmented reality imaging. An optical display module of the AR display device converges and images light rays through two times of reflection. The correct aberration ability of the optical display module is far greater than a refractive surface and the optical display module has the advantageof not causing chromatic aberration, thus overcoming the defects of a conventional optical system that chromatic aberration tends to exist by using refraction and the optical system is large in size and heavy in weight because the number of lenses is increased for compensation and correction. Meanwhile, with the increased number of components, clearer images, the larger field of view, a larger eyebox and a larger exit pupil distance can be obtained, and the size, weight and complexity of a system are reduced. An optical path of the optical display module is of a coaxial structure, and comparedwith an off-axis structure, the coaxial structure enables optical aberration to be evaluated and corrected more easily and optical components to be processed and manufactured more easily. In this way, the optical display module is easier to manufacture and assemble, batch production can be realized more easily, and the production cost is lower.

Description

technical field [0001] The present invention relates to the technical field of augmented reality imaging, in particular to an AR display 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 display device in an existing AR glasses or an AR helmet is shown, as shown in figure 1 As shown, the existing AR display 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 upper part of the optical system, an...

AI Technical Summary

Problems solved by technology

[0006] First, due to the low degree of device reuse, the optical display module is large or heavy and not compact enough;

[0007] Second, the optical structure is too simple, and there are too few design parameters that can provide design freedom, so the imaging quality is low; the field of view is small, generally 30°-45°; the exit pupil diameter is too small, generally 6mm-10mm; The interpupillary distance is too small, generally 10mm to 14mm;

[0008] Third, some devices are difficult to manufacture, or some components are difficult to assemble, which is not conducive to mass production

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