Augmented reality projection system, and head-mounted display equipment

Abstract

The invention discloses an augmented reality projection system, and head-mounted display equipment. The augmented reality projection system comprises a display module, a waveguide structure, and a diaphragm, wherein the display module is used for display imaging, and emits imaging beams for the display imaging; the imaging beams are emitted by the display module to the waveguide structure, and areprovided with a non-pupil dilation direction and a pupil dilation direction when transmitted inside the waveguide structure; the diaphragm is arranged on a light path from the display module to the waveguide structure, used to limit exit pupil positions of the imaging beams in the non-pupil dilation direction, and provided with a first opening size in the non-pupil dilation direction; and the first opening size can be adjusted in the non-pupil dilation direction so that the exit pupil positions coincide with eye relief positions. The augmented reality projection system and the head-mounted display equipment provided by the invention have the advantages that field loss or an excessively large exit pupil diameter in a one-dimensional pupil dilation waveguide system can be effectively avoided, and high imaging quality of the overall system is guaranteed.

Description

technical field [0001] The invention relates to the field of augmented reality technology, in particular to an augmented reality projection system and a head-mounted display device. Background technique [0002] Augmented Reality (Augmented Reality), referred to as AR, is a real-time calculation of the position and angle of the camera and the corresponding image technology. Physical information that is difficult to experience within a certain time and space range, through computer and other science and technology, simulates and then superimposes, applies virtual information to the real world, and is perceived by human senses, so as to achieve a sensory experience beyond reality. [0003] In the current AR head-mounted display device, the waveguide AR system has the advantages of compact structure and light weight, which is an important development direction of AR head-mounted display. The exit pupil corresponding to the dilated pupil direction is inconsistent. When designin...

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Problems solved by technology

[0004] Based on this, for the one-dimensional pupil dilating waveguide module, if it is designed according to the non-dilated pupil direction, the field of view will be lost easily, and if it is designed according to the pupil dilated direction, the exit pupil diameter will be too large. It is necessary to provide an augmented reality projection system. It can avoid the loss of field of view or excessive exit pupil diameter, and ensure the imaging quality of the overall system

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