CN115561911B - AR display device and AR head-mounted device - Google Patents
AR display device and AR head-mounted device Download PDFInfo
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- CN115561911B CN115561911B CN202211462998.8A CN202211462998A CN115561911B CN 115561911 B CN115561911 B CN 115561911B CN 202211462998 A CN202211462998 A CN 202211462998A CN 115561911 B CN115561911 B CN 115561911B
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- G—PHYSICS
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
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Abstract
The invention relates to the technical field of AR (augmented reality), and particularly discloses AR display equipment and AR head-mounted equipment, wherein the AR display equipment comprises an equipment body and a waveguide lens connected with the equipment body; a projection light machine for projecting projection light rays to the waveguide lens; the deflection mechanism is connected with the projection optical machine; an angle sensor for detecting a deflection angle between the waveguide lens and the standard display position; a processor connected with the deflection mechanism and the angle sensor; the processor is used for controlling the deflection mechanism to drive the projection optical machine to move to a set position when the angle sensor detects that the deflection included angle is not 0 so as to adjust the angle or the position of the projection optical machine for projecting the projection light rays to the waveguide lens. The projection light outputted by the projection light machine can be adjusted based on the angle of deflection of the waveguide lens in the AR display device, so that the problem of poor imaging effect of a projection picture caused by deflection of the position of the waveguide lens is solved, and the display effect and the use experience of the AR display device are improved.
Description
Technical Field
The invention relates to the technical field of AR equipment, in particular to AR display equipment and AR head-mounted equipment.
Background
In AR display devices, a virtual projection screen displayed superimposed on a real world scene is projected and displayed for a user mainly through a waveguide lens. The waveguide lens is similar to a glasses lens in appearance structure, and the working principle is that a miniature projector projects projection light to the waveguide lens, and the projection light is conducted in the waveguide lens and then is incident to human eyes to form a virtual projection picture.
Along with the development of AR technology, in order to improve the convenience of AR display equipment, a waveguide lens can be arranged to be in a structure capable of being turned up and down, so that a user only needs to turn the waveguide lens to a position above eyes when the user pauses to use the AR display equipment; when the AR display device needs to be used continuously, the waveguide lens is turned over to the right front of the eye sight line. However, in the process of repeatedly overturning the waveguide lens, the position of the waveguide lens in the human eye sight line is inevitably caused to deviate, so that the imaged projection picture is poor in immersion feel, even the user is enabled to feel dizziness, the eyes are tired and uncomfortable, and the user experience is reduced.
Disclosure of Invention
The invention aims to provide an AR display device and an AR headset device, which can improve the display effect of an AR display picture to a certain extent and improve the use experience of a user.
In order to solve the technical problems, the invention provides an AR display device, which comprises a device body and a waveguide lens connected with the device body; a projection light machine for projecting projection light rays to the waveguide lens; the deflection mechanism is connected with the projection light machine; an angle sensor for detecting a deflection angle between the waveguide lens and a standard display position; a processor coupled to the deflection mechanism and the angle sensor;
and the processor is used for controlling the deflection mechanism to drive the projection optical machine to move to a set position when the angle sensor detects that the deflection included angle is not 0 so as to adjust the angle or the position of the projection optical machine for projecting the projection light rays to the waveguide lens.
In an alternative embodiment of the present application, the waveguide lens and the device body are connected in a flip-up and flip-down manner.
In an optional embodiment of the present application, the processor is configured to control the deflection mechanism to drive the projection light machine to reversely rotate the deflection included angle along a direction in which the waveguide lens deviates from the standard display position when the angle sensor detects that the angle of the deflection included angle is within a preset angle range.
In an alternative embodiment of the present application, the coupling-in end of the waveguide lens is provided with a coupling-in member; an included angle between the coupling-out end of the waveguide lens and the surface of the waveguide lens outputting projection light is
Is a reflective element of (a);
the inequality between the reflecting element and the waveguide lens is satisfied
Wherein, the method comprises the steps of, wherein,
an included angle between the projected light in the waveguide lens and the surface of the waveguide lens outputting the projected light when the waveguide lens is at the standard display position;
is the maximum angle in the preset angle range.
In an optional embodiment of the present application, the device further includes a prompter connected to the processor, and configured to output a prompting signal when the deflection angle exceeds the preset angle range.
In an alternative embodiment of the present application, the waveguide lens is connected to the device body through a connection socket, and a damping member is further disposed between the connection socket and the device body.
In an alternative embodiment of the present application, the angle sensor is a laser sensor.
In an alternative embodiment of the present application, the waveguide lens is connected to the device body by a connection mount; the waveguide lens is connected with the connecting seat through a rotating shaft; the rotating shaft is connected with a driving assembly; the driving assembly is used for driving the waveguide lens to swing and rotate left and right by taking the vertical axis as a rotating shaft through the rotating shaft.
In an alternative embodiment of the present application, the waveguide lens includes a left waveguide lens and a right waveguide lens, and the driving assembly includes a first driving assembly and a second driving assembly, and the first driving assembly and the second driving assembly are respectively used for driving the left waveguide lens and the right waveguide lens to swing and rotate independently.
An AR headset comprising an AR display device as claimed in any one of the preceding claims.
The invention provides an AR display device and an AR headset device, wherein the AR display device comprises a device body and a waveguide lens connected with the device body; a projection light machine for projecting projection light rays to the waveguide lens; the deflection mechanism is connected with the projection optical machine; an angle sensor for detecting a deflection angle between the waveguide lens and the standard display position; a processor connected with the deflection mechanism and the angle sensor; the processor is used for controlling the deflection mechanism to drive the projection optical machine to move to a set position when the angle sensor detects that the deflection included angle is not 0 so as to adjust the angle or the position of the projection optical machine for projecting the projection light rays to the waveguide lens.
In the present application, it is considered that in the AR display device, optical components such as the projection optical machine and the waveguide lens are set with a state in which the waveguide lens is vertically disposed right in front of the human eye as a reference, and this position is thus a standard display position where the waveguide lens can achieve an optimal display effect; however, once the waveguide lens deviates from the standard display position, the display effect of the projection screen is greatly reduced for the optical device with higher definition such as the AR display device. Therefore, the angle sensor for detecting the deflection included angle of the waveguide lens relative to the standard display position is further arranged in the AR display device, and the projection optical machine is further connected with the deflection mechanism, so that when the angle sensor detects that the deflection included angle is not 0, that is, the waveguide lens is deflected relative to the standard display position, the projection optical machine can be driven to move to the set position through the deflection mechanism, and then the angle or the position of the projection optical machine for projecting projection optics to the waveguide lens is changed and adjusted, so that the problem of poor imaging effect of a projection picture caused by deflection of the position of the waveguide lens is solved, the waveguide lens can output a clear virtual projection picture even if the waveguide lens is not positioned at the standard display position, the display effect of the AR display device is improved to a great extent, and the use experience of a user is improved.
Drawings
For a clearer description of embodiments of the invention or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an AR display device according to an embodiment of the present application;
fig. 2 is a schematic diagram of an optical path structure of an AR display device according to an embodiment of the present application;
fig. 3 is another schematic structural diagram of an AR display device according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of another optical path structure of an AR display device according to an embodiment of the present application.
Detailed Description
In AR display devices, for a waveguide lens that can be turned upside down, most of them are turned manually by a user, and the accuracy of turning the waveguide lens manually by the user is often limited, and there may be a situation that the turning is not in place, and for a high-accuracy optical element such as a waveguide lens, slight differences of the waveguide lens may cause a relatively obvious deviation of a projection image; therefore, only slight deviation which cannot be perceived by a user can occur in the position of the waveguide lens, and poor projection effect can be caused; but also the position deviation of the waveguide lens is too tiny, which causes the problem that the user is difficult to adjust.
Of course, the up-down overturning of the waveguide lens can be considered to be electrically controlled, but no matter the manual overturning or the electric overturning is adopted, the number of times of repeated overturning of the waveguide lens is increased, abrasion occurs to structural parts for realizing overturning, and finally, the waveguide lens can not be accurately overturned in place, and the problem of poor projection effect display can be caused.
In addition, even if the waveguide lens cannot be turned upside down, the component may be deformed by collision and abrasion with the extension of the service time, and the waveguide lens may deviate from the original position, which may cause a problem of poor display effect of the projection screen.
Therefore, the problem that the position of the waveguide lens has deviation can be solved by adjusting the angle direction of the projection light output by the projection light machine, so that good display effect of the AR display device is ensured to a certain extent, and the wide application of the AR display device is facilitated.
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, fig. 2, fig. 3, and fig. 4, fig. 1 is a schematic structural diagram of an AR display device provided in an embodiment of the present application, fig. 2 is a schematic optical path structural diagram of the AR display device provided in an embodiment of the present application, fig. 3 is another schematic structural diagram of the AR display device provided in an embodiment of the present application, and fig. 4 is another schematic optical path structural diagram of the AR display device provided in an embodiment of the present application.
In a specific embodiment of the present application, the AR display device may include:
an apparatus body 10; a waveguide lens 20 connected to the apparatus body 10; a projection light machine 30 for projecting projection light to the waveguide lens 20; a deflection mechanism connected to the projection light machine 30; an angle sensor for detecting the angle of deflection between the waveguide lens 20 and the standard display position; a processor connected with the deflection mechanism and the angle sensor;
the processor is used for controlling the deflection mechanism to drive the projection light machine 30 to move to a set position when the angle sensor detects that the deflection included angle is not 0, so as to adjust the angle or the position of the projection light machine 30 for projecting the projection light rays to the waveguide lens 20.
During use of the AR display device, when the AR display device is worn by a user, the waveguide lens 20 in the AR display device should be theoretically disposed in front of the eye's line of sight in a vertical direction; therefore, when the optical path structure between the projection light machine 30 and the waveguide lens 20 is actually set, the optical path structure is also set with the waveguide lens 20 positioned in the vertical direction; accordingly, when the waveguide lens 20 is in the vertical position, the projection light machine 30 projects the projection light to the waveguide lens 20 to finally make the projection image incident into the human eye the most clear, and the imaging effect is the best. For this reason, the position in the vertical direction of the waveguide lens 20 is referred to as the standard display position of the waveguide lens 20 in this application, that is, the standard display position in this embodiment is the position where the display effect of the waveguide lens 20 is best.
In the present application, the vertical direction of the waveguide lens 20 refers to a state in which the line of sight direction of the user is in the horizontal direction when the user is looking straight ahead, and the plane in which the waveguide lens is located is a vertical plane. In this application, the vertical and horizontal directions are directions determined based on a state in which the line of sight direction of the user is in the horizontal direction when the user is looking straight ahead, and the description thereof will not be repeated.
Referring to fig. 2, the present embodiment provides an angle sensor capable of detecting a deflection angle of the waveguide lens 20 with respect to a standard display position in the AR display device; when the deflection included angle acquired by the angle sensor is not 0, that is, the current position of the waveguide lens 20 has deviation relative to the standard display position, the angle sensor sends the deflection included angle obtained by detection to the processor, and the processor can send a control signal to the deflection mechanism based on the magnitude of the deflection included angle, so that the deflection mechanism drives the projection light machine 30 to rotate according to the magnitude of the deflection included angle, and the angle of the projection light ray projected by the projection light machine 30 to the waveguide lens 20 is changed; accordingly, the optical path of the projection light transmitted to the human eye through the waveguide lens 20 is also changed, so that the best display effect of the projection light projected to the human eye can be ensured as long as the rotating position of the projection light machine 30 is ensured, and the high-definition display of the projection image can be realized under the condition that the deflection of the waveguide lens 20 relative to the standard display position exists.
The waveguide lens 20 in this embodiment may have a flip-up function, that is, the waveguide lens 20 and the apparatus body 10 may be connected in a flip-up manner. As shown in fig. 1, in the AR display device shown in fig. 1, one waveguide lens 20 is in an upturned state, and the other is in an unopened state. When the user does not use the AR display device, if the waveguide lens 20 is turned upwards, the waveguide lens 20 is located above the human eye, and the user can directly view the environmental scene without looking through the waveguide lens; when the waveguide lens is turned down to the front of the human eye, the projection light outputted by the projection light machine 30 can be conducted to enter the human eye through the waveguide lens 20, and if the waveguide lens 20 is not properly operated by the user or the connection structure between the waveguide lens 20 and the device body 10 is worn and loosened, the waveguide lens 20 is not precisely turned back to the standard display position, the direction of the projection light outputted by the projection light machine 30 can be changed by adjusting the rotation projection light machine, so that the user can normally watch the projection picture with good display effect.
It will be appreciated that even if the waveguide lens 20 cannot be turned upside down, in practical applications, the waveguide lens 20 may deviate from the standard display position due to some accidents, so that it can be seen that the waveguide lens 20 in this embodiment of the present application may be a lens with or without an upside down function, and when the waveguide lens 20 is a lens with an upside down function, it may be turned manually or electrically, and in this application, the optical path adjustment of the projection light may be implemented in a similar manner in this embodiment, and the clear display of the projection image is ensured by the cooperation between the angle sensor, the deflection mechanism and the processor, regardless of whether the waveguide lens 20 with or without a turning function is a waveguide lens 20 with a turning function. Of course, the technical solution of the present application is mainly applied to an AR display device with the waveguide lens 20 having an up-down flip function, and this is mainly described in the following embodiments, which will not be described again.
The projection light machine 30, the deflection mechanism, the angle sensor and the processor in the AR display device may be disposed in the connection seat 40 between the waveguide lens 20 and the device body 10, and the relative positions between the angle sensor, the projection light machine 30 and other components and the waveguide lens 20 are fixed; and a groove 11 for accommodating the connection seat is arranged on the device body 10, and the surface of a groove wall 110 of the groove 11 is parallel to the waveguide lens 20 in the standard display position. Thus, in an alternative embodiment of the present application, the angle sensor may specifically be a distance measurement sensor such as a laser sensor, and the distance between the position where the angle sensor rotates with the waveguide lens 20 and the groove wall 110 of the groove 11 is converted into a deflection angle between the waveguide lens 20 and the standard display position by collecting the distance. In practical application, a reflective film can be arranged on the wall of the groove 11 so as to ensure that the laser sensor can accurately obtain the deflection included angle.
Of course, in practical applications, when the waveguide lens 20 can be turned up and down relative to the apparatus body 10, the connection seat 40 between the waveguide lens 20 and the apparatus body 10 necessarily includes a rotation axis. Therefore, in practical applications, the rotation axis may be provided with an angular measuring device similar to an encoder, so as to collect the deflection angle when the waveguide lens 20 deflects relative to the standard display position.
In addition, the angle sensor may also be disposed on the groove wall 110 of the groove 11, and the detection of the deflection angle can be also achieved by detecting the relative position between the position of the angle sensor and the connection seat 40, which is not described in detail in this application.
Similar to the angle sensor described above, the projection light machine 30 may be disposed in the connection base 40, i.e., may be turned upside down along with the connection base 40 and the waveguide lens 20. As shown in fig. 2, when the waveguide lens 20 is deflected relative to the standard display position, the projection light engine 30 is also deflected with the waveguide lens. In the embodiment shown in fig. 2, the position of the waveguide lens 20 shown by the dotted line is the standard display position, and the position of the waveguide lens 20 shown by the solid line is the position where the waveguide lens 20 has a certain deflection angle relative to the standard display position; the projection optical machine 30 shown by the dotted line is the position of the projection optical machine 30 when the waveguide lens 20 is at the standard display position; the projection light machine 30 shown by the solid line is the position of the projection light machine 30 when the waveguide lens 20 has a certain deflection angle relative to the standard display position.
In order to ensure that the projected light beam output to the human eye in the same direction as that in the normal display position can be output even under the condition that the waveguide lens 20 has a certain deflection relative to the normal display position. In the process of controlling the rotation of the projection optical machine 30, when the angle sensor detects that the angle of the deflection included angle is within the preset angle range, the deflection mechanism is controlled to drive the projection optical machine 30 to reversely rotate along the direction of deviating the waveguide lens 20 from the standard display position.
Referring to fig. 2, in the embodiment shown in fig. 2, waveguide lens 20 is deflected clockwise relative to the normal display position by an angle of deflection
The method comprises the steps of carrying out a first treatment on the surface of the Based on the basic principle of optical path transmission, the projected light beam output by the deflected waveguide lens 20 should also be clockwise relative to the projected light beam output by a standard display position
The deflection angle of the angle. Therefore, in order to deflect the projection light back to the output light path of the standard display position, the projection light machine 20 can be controlled to rotate in the counterclockwise direction
Accordingly, the transmission path of the projection light is obviously deflected correspondingly, and finally, the direction of the projection light outputted when the waveguide lens 20 is positioned at the standard display position is consistent with that of the projection light, so that the direction of the light of the virtual image is perceived to be unchanged by human eyes, and the projection picture can be outputted well even if the waveguide lens deviates from the standard display position.
On this basis, since the transmission of the projection light in the waveguide lens 20 is total reflection transmission, there is a certain requirement on the incident angle of the projection light on the coupling end of the waveguide lens 20, so that the situation that the total reflection transmission cannot be performed after the projection light is incident on the waveguide lens 20 is avoided.
Therefore, when the angle sensor detects and obtains the deflection included angle between the waveguide lens 20 and the standard display position, it can first determine whether the deflection included angle is within the preset angle range, if so, the projection light machine 30 is driven to rotate by the deflection mechanism, so as to change the direction of the output projection light; when the deflection included angle of the waveguide lens 20 relative to the standard display position exceeds the preset angle range, the deflection angle of the waveguide lens 20 is too large at this time, so that a user can be reminded to properly adjust the waveguide lens 20 to reduce the deflection included angle, and particularly, a voice prompter or other types of prompters can be arranged in the device body so as to prompt the user to manually adjust the position of the waveguide lens 20.
For the above-mentioned preset angle range, the range may specifically be a range of 0 ︒ to 10 ︒, or may also be a range of 0 ︒ to 12 ︒, and may specifically be set based on practical application requirements, in order to ensure that the waveguide lens 20 at each position in the preset angle range can achieve good display of the projection screen by adjusting the direction of the projection light output by the projection light machine, in another optional embodiment of the present application, the method may further include:
the coupling-in end of the waveguide lens 20 is provided with a coupling-in piece 21; the angle between the coupling-out end of the waveguide lens 20 and the surface of the waveguide lens 20 outputting the projection light is
Is provided with a reflecting element 22;
the inequality between the reflective element 22 and the waveguide mirror 20 is satisfied
Wherein, the method comprises the steps of, wherein,
is the angle between the projected light within the waveguide lens 20 and the surface of the waveguide lens 20 from which the projected light is output when the waveguide lens 20 is in the standard display position;
is the maximum angle within the preset angle range.
Referring to fig. 2, equation (1) is a condition that ensures that total reflection can occur in the waveguide lens 20 after the projection light is coupled into the waveguide lens 20 at the standard display position in the above inequality. Whereas for equation (4) it is a condition that ensures that the total reflection occurs within the waveguide lens 20 after the projection light is coupled into the waveguide lens 20 when the maximum deflection of the waveguide lens 20 occurs. For the formula (2) and the formula (3), the condition that the projection light in the waveguide lens 20 can be coupled out to the human eye through the reflection action of the reflecting element 22 is adopted, and the formula (2) is to ensure that the incident angle of the projection light reflected by the reflecting element 22 when the projection light is incident on the surface of the waveguide lens 20 again is smaller than the total reflection angle; the formula (3) is to ensure that the coupling-out direction of the projection light incident on the reflective element 22 can be parallel to the coupling-out direction of the output projection light when the waveguide lens 20 is positioned at the standard display position, so that the direction of the light entering the human eye is not changed, i.e. the position of the image is kept substantially consistent.
The inequality described above is an inequality requirement that should be satisfied between the reflecting element and the waveguide lens 20 when the deflection angle of the waveguide lens 20 with respect to the standard display position reaches a maximum angle within a preset angle range; it will be appreciated that as long as the waveguide lens 20 satisfies this condition, any angle of the deflection included angle of the waveguide lens 20 with respect to the standard display position within the preset angle range can achieve a good display effect of the projection screen.
In addition, the AR display device in the present application is a device for implementing superposition display of virtual and real scenery images, and for this purpose, in order to avoid shielding the reflective element 22 from the incident ambient light to the human eye, the reflective element 22 may be a semi-reflective and semi-transmissive element.
In addition, in practical application, the coupling of the projection light in the waveguide lens 20 is not limited to the use of the reflective element 22, but may be implemented by a grating element, and the coupling of the projection light is implemented by the diffraction effect of the grating element on the projection light, so that the conditions required to be satisfied by the grating element and the waveguide lens 20 may be determined based on the basic diffraction characteristics of the grating element, which is not described in detail herein.
In the embodiment shown in fig. 2, the projection light machine 30 is mainly taken as an example to be disposed in a connection seat capable of being turned synchronously with the waveguide lens 20. In practical applications, the projection light machine 30 may also be disposed on the apparatus body 10, that is, the projection light machine 30 does not deflect along with the waveguide lens 20 during the deflection process. Referring to the embodiment shown in fig. 2, when the waveguide lens 20 deflects relative to the standard display position, the direction of the projection light beam projected by the projection light machine 30 to the waveguide lens 20 should be parallel to the direction of the projection light beam output by the waveguide lens 20 when the waveguide lens 20 is located at the standard display position; that is, when the projector 30 is disposed in the apparatus body 10 without deflecting with the waveguide lens 20, the projector 30 does not need to be rotationally adjusted; however, after the waveguide lens 20 deflects relative to the standard display position, the relative position between the projection optical machine 30 and the waveguide lens 20 changes, which may cause that the projection light outputted by the projection optical machine 30 cannot be incident into the waveguide lens 20; therefore, the manner in which the deflection mechanism drives the projection light machine 30 to move can be translational movement, so that the coupling-in area of the waveguide lens 20 can be located on the output light path of the projection light machine 30 to output the projection light. The greater this deflection angle, the greater the distance that needs to be moved, which can be determined based on basic optical principles, is related to the deflection angle of the waveguide lens 20 relative to the standard display position, and is not described in detail in this application.
As described above, for the waveguide lens 20 having the up-down turning function, it is necessary to connect the connection base 40 and the apparatus body 10 to each other, and in order to enable the user to stably turn over and stay above the eyes of the user during the turning process of the waveguide lens 20 by the manual turning operation, a damping member may be further provided between the connection base 40 and the apparatus body 10.
Further, in another alternative embodiment of the present application, the waveguide lens 20 is connected to the device body 10 by a connection mount 40; the waveguide lens 20 is connected with the connecting seat 40 through a rotating shaft; the rotating shaft is connected with a driving component; the driving component is used for driving the waveguide lens 20 to swing and rotate left and right by taking the vertical axis as a rotation axis through the rotation shaft.
Referring to fig. 3, a rotating shaft located on a central axis of the waveguide lens 20 may be disposed between the connection base 40 and the waveguide lens 20, one end of the rotating shaft is fixedly connected with the waveguide lens 20, the other end is inserted into the connection base 40, and a driving component is connected in the connection base 40, and the rotating shaft is driven to rotate around a straight line of the driving component by the driving component, so that the waveguide lens 20 can be driven to turn left and right. In order to ensure the stability of the left-right turning of the waveguide lens 20, a damping member may be further disposed between the rotating shaft and the driving assembly, so that the connection seat 40 and the waveguide lens 20 rotate in a damped manner. Referring to the light path diagram shown in fig. 4, the distance of the combined image can be changed by turning the waveguide lens 20 left and right, for example, the solid line light path imaging position shown in fig. 4 is located at the point a, and when the two waveguide lenses are turned over, the imaging position point moves to the point a'; in addition, by turning the two waveguide lenses 20 left and right, the two waveguide lenses 20 can be turned to a position more fitting the face design, so that the ergonomics are met, and the user experience is further improved; the rotation of the waveguide lens 20 may be performed manually or may be performed electronically, without specific limitation in this application.
Further, the waveguide lens 20 includes a left waveguide lens and a right waveguide lens, and the driving assembly includes a first driving assembly and a second driving assembly, which are respectively used for driving the left waveguide lens and the right waveguide lens to swing and rotate independently.
Referring to fig. 4, when the waveguide lens 20 is turned right and left symmetrically to change the far and near of the combined image, and when the waveguide lens 20 is turned right and left asymmetrically to change the far and near of the combined image, the left and right positions of the combined image in the real environment can be changed, that is, the combined image is not necessarily kept at the center position of the visual field, the visual field of a person is generally used to be at the center position, and during riding, if the combined image is always at the center position of the visual field, certain interference is caused to the visual field of the environment, and by making the combined image deviate from the center position of the visual field, riding safety is not affected, and viewing of a virtual image is not affected.
It can be understood that in the actual left-right turning process of the two waveguide lenses 20, the two waveguide lenses 20 need to be mutually matched for display, so that in order to ensure the display effect, the processors respectively driving the first driving component and the second driving component can be the same processor or two processors in communication with each other, so as to ensure that the two waveguide lenses 20 can be mutually matched and independently turned left and right.
In summary, in the AR display device provided in the present application, an angle sensor capable of detecting a position of a waveguide lens is provided, a deflection mechanism capable of controlling rotation of a projection optical machine and a processor capable of controlling operation of the deflection mechanism are provided, once detection determines that the waveguide lens deflects relative to a standard display position, the processor can control the deflection mechanism to drive the projection optical machine to rotate relative to the waveguide lens, and then change a direction of the projection optical machine to output projection light to the waveguide lens, so that adjustment of a light path of the projection light passing through the waveguide lens is achieved, good imaging effect of the projection light is achieved, and further good display effect of a projection picture can be achieved even when the waveguide lens deviates from the standard display position, and user experience is improved to a certain extent.
The application also provides an AR headset comprising the AR display device according to any of the embodiments.
The AR headset may be, in particular, AR glasses, AR helmets or the like, which are not described in detail in the present application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is inherent to. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. In addition, the parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of the corresponding technical solutions in the prior art, are not described in detail, so that redundant descriptions are avoided.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (6)
1. An AR display device, comprising a device body, a waveguide lens connected to the device body; a projection light machine for projecting projection light rays to the waveguide lens; the deflection mechanism is connected with the projection light machine; an angle sensor for detecting a deflection angle between the waveguide lens and a standard display position; the deflection included angle is an included angle corresponding to the turning deviation of the waveguide lens in the up-down direction relative to the standard display position; a processor coupled to the deflection mechanism and the angle sensor;
the processor is used for controlling the deflection mechanism to drive the projection optical machine to move to a set position when the angle sensor detects that the deflection included angle is not 0 so as to adjust the angle or the position of the projection optical machine for projecting projection light rays to the waveguide lens;
the waveguide lens and the equipment body can be connected in an up-down turnover way;
the processor is used for controlling the deflection mechanism to drive the projection optical machine to reversely rotate the deflection included angle along the direction of the waveguide lens deviating from the standard display position when the angle sensor detects that the angle of the deflection included angle is within a preset angle range;
the coupling-in end of the waveguide lens is provided with a coupling-in piece; a reflecting element with an included angle beta between the coupling-out end of the waveguide lens and the surface of the waveguide lens outputting projection light is arranged in the coupling-out end of the waveguide lens;
the inequality between the reflecting element and the waveguide lens is satisfied
Wherein alpha is an included angle between the projected light in the waveguide lens and the surface of the waveguide lens outputting the projected light when the waveguide lens is at the standard display position; θ is the maximum angle within the preset angle range;
the device also comprises a prompter connected with the processor and used for outputting a prompting signal when the deflection included angle exceeds the preset angle range.
2. The AR display device of claim 1, wherein the waveguide lens is connected to the device body through a connection base, and a damping member is further provided between the connection base and the device body.
3. The AR display device of claim 1, wherein the angle sensor is a laser sensor.
4. The AR display device of claim 1 or 3, wherein the waveguide lens is connected to the device body by a connection mount; the waveguide lens is connected with the connecting seat through a rotating shaft; the rotating shaft is connected with a driving assembly; the driving assembly is used for driving the waveguide lens to swing and rotate left and right by taking the vertical axis as a rotating shaft through the rotating shaft.
5. The AR display device of claim 4, wherein the waveguide lens comprises a left waveguide lens and a right waveguide lens, the drive assembly comprising a first drive assembly and a second drive assembly, the first drive assembly and the second drive assembly being configured to drive the left waveguide lens and the right waveguide lens to independently swing side-to-side.
6. An AR headset comprising an AR display device as claimed in any one of claims 1 to 5.
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| CN111722317A (en) * | 2020-07-14 | 2020-09-29 | 北京至格科技有限公司 | Diffraction light waveguide lens |
| CN114967160A (en) * | 2022-07-28 | 2022-08-30 | 歌尔光学科技有限公司 | Projection display assembly and augmented reality display device |
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| JP5237267B2 (en) * | 2007-11-20 | 2013-07-17 | パナソニック株式会社 | Beam scanning display device, display method, and automobile |
| US20160170482A1 (en) * | 2014-12-15 | 2016-06-16 | Seiko Epson Corporation | Display apparatus, and control method for display apparatus |
| CN111505827B (en) * | 2020-05-22 | 2022-07-12 | Oppo广东移动通信有限公司 | Optical display subassembly and intelligent wearing equipment |
| CN216285986U (en) * | 2021-11-05 | 2022-04-12 | 舜宇光学（浙江）研究院有限公司 | Near-to-eye display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111722317A (en) * | 2020-07-14 | 2020-09-29 | 北京至格科技有限公司 | Diffraction light waveguide lens |
| CN114967160A (en) * | 2022-07-28 | 2022-08-30 | 歌尔光学科技有限公司 | Projection display assembly and augmented reality display device |
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