CN215575942U

CN215575942U - Special-shaped binocular imaging unit and binocular display optical machine

Info

Publication number: CN215575942U
Application number: CN202122286039.2U
Authority: CN
Inventors: 陈杭; 张倩; 胡增新
Original assignee: Sunny Optical Zhejiang Research Institute Co Ltd
Current assignee: Sunny Optical Zhejiang Research Institute Co Ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-01-18
Anticipated expiration: 2031-09-22

Abstract

The utility model relates to a special-shaped binocular imaging unit and a binocular display optical machine, which can realize binocular near-to-eye display by only using a single Micro-LED chip and reduce the cost. The special-shaped binocular imaging unit includes a left eye imaging element and a right eye imaging element which are oppositely arranged. The left eye imaging element is suitable to be correspondingly arranged at the left part of the light emitting side of the Micro-LED chip, and the left eye imaging element is provided with a left eye imaging optical path used for enabling a first angle light beam in image light emitted by the Micro-LED chip to propagate along the left eye imaging optical path for left eye imaging. The right eye imaging element is suitable to be correspondingly arranged at the right part of the light emitting side of the Micro-LED chip, and the right eye imaging element is provided with a right eye imaging optical path used for enabling a second angle light beam in image light emitted by the Micro-LED chip to propagate along the right eye imaging optical path for right eye imaging, and the emergent angle range of the first angle light beam is not intersected with the emergent angle range of the second angle light beam.

Description

Special-shaped binocular imaging unit and binocular display optical machine

Technical Field

The utility model relates to the technical field of micro display, in particular to a special-shaped binocular imaging unit and a binocular display optical machine.

Background

In recent years, with the rapid development and the maturation of new display technologies, more and more small portable projection media players, projection mobile phones, and wearable display devices (such as AR/VR glasses) are on the market in succession, so that the application modes of the devices in the micro-display field are more diversified, and the future development prospects are expected.

At present, in various display schemes in the field of Micro display, a mainstream scheme is generally configured with an LCoS chip, an LCD chip, a DLP chip, a Micro-LED chip and the like, and particularly, because the Micro-LED chip belongs to a self-luminous form, a lighting system is omitted, so that an optical-mechanical system is more compact, light and small, and the Micro-LED chip is widely concerned and valued. However, the Micro-LED chips have high cost and low energy utilization rate, and generally, two Micro-LED chips have to be used in the conventional binocular display device to provide image light for the left and right eyes, which causes a serious power dissipation problem.

SUMMERY OF THE UTILITY MODEL

One advantage of the utility model is that the special-shaped binocular imaging unit and the binocular display optical machine are provided, the number of the Micro-LED chips required by near-eye display equipment can be reduced, binocular near-eye display can be realized only by using a single Micro-LED chip, and cost reduction is facilitated.

Another advantage of the present invention is to provide a special-shaped binocular imaging unit and a binocular display optical machine, wherein in an embodiment of the present invention, the special-shaped binocular imaging unit can utilize the emergent energy of a single Micro-LED chip to a greater extent, which is beneficial to improving the energy utilization rate of the single Micro-LED chip and reducing power consumption and heat dissipation.

Another advantage of the present invention is to provide a special-shaped binocular imaging unit and a binocular display optical machine, wherein in an embodiment of the present invention, the special-shaped binocular imaging unit can image two types of image light emitted by a single Micro-LED chip within different angle ranges, which is helpful to double an originally available beam aperture angle and reduce energy waste.

Another advantage of the present invention is to provide a special-shaped binocular imaging unit and a binocular display optical machine, wherein in an embodiment of the present invention, a left eye imaging optical path and a right eye imaging optical path in the special-shaped binocular imaging unit can respectively use image lights with different angles emitted by a single Micro-LED chip to perform imaging, which do not interfere with each other, so as to effectively compress the volume of a binocular imaging system, and simplify and compact the binocular imaging system.

Another advantage of the present invention is to provide a special-shaped binocular imaging unit and a binocular displaying optical machine, wherein in an embodiment of the present invention, the binocular displaying optical machine can utilize light rays emitted by a single Micro-LED chip in two different angle ranges to double the available beam aperture angle, which is helpful to improve the energy utilization rate of the single chip.

Another advantage of the present invention is to provide a special-shaped binocular imaging unit and a binocular displaying optical machine, wherein in an embodiment of the present invention, the binocular displaying optical machine can make the overall structure of the device more compact, and meet the requirements of miniaturization and light weight of the product.

Another advantage of the present invention is to provide a special-shaped binocular imaging unit and a binocular display optical machine, wherein in an embodiment of the present invention, the binocular near-eye display device can realize binocular near-eye display by using only a single Micro-LED chip, and meanwhile, not only the brightness of a binocular display image is not reduced, but also the energy utilization rate of the single Micro-LED chip is improved, and energy waste is reduced.

Another advantage of the present invention is to provide a binocular imaging unit and a binocular displaying light machine which do not require expensive materials or complicated structures in order to achieve the above objects. Therefore, the utility model successfully and effectively provides a solution, not only provides a simple special-shaped binocular imaging unit and a binocular display optical machine, but also increases the practicability and reliability of the special-shaped binocular imaging unit and the binocular display optical machine.

To achieve at least one of the above advantages or other advantages and objects of the present invention, there is provided a special-shaped binocular imaging unit for being correspondingly disposed at a light emitting side of a single Micro-LED chip, the special-shaped binocular imaging unit including:

a left eye imaging element, wherein the left eye imaging element is suitable for being correspondingly arranged at the left part of the light emitting side of the Micro-LED chip, and the left eye imaging element is provided with a left eye imaging optical path for enabling a first angle light beam in the image light emitted by the Micro-LED chip to propagate along the left eye imaging optical path for left eye imaging; and

a right eye imaging element, wherein the right eye imaging element is adapted to be correspondingly disposed at a right portion of a light emitting side of the Micro-LED chip, and the right eye imaging element has a right eye imaging optical path for propagating a second angle light beam of the image light emitted via the Micro-LED chip along the right eye imaging optical path for right eye imaging, and an exit angle range of the first angle light beam is non-intersecting with an exit angle range of the second angle light beam.

According to an embodiment of the application, the left eye imaging element has a left eye incident surface for facing the Micro-LED chip, a left eye reflecting surface for facing away from the Micro-LED chip, and a left eye exit surface, and the left eye imaging optical path firstly penetrates into the left eye incident surface to extend to the left eye reflecting surface, then is bent in a reflecting manner by the left eye reflecting surface to extend to the left eye incident surface, and then is bent in a totally reflecting manner by the left eye incident surface to extend to the left eye exit surface to exit; the right eye imaging element is provided with a right eye incident surface, a right eye reflecting surface and a right eye emergent surface, the right eye incident surface is used for facing the Micro-LED chip, the right eye reflecting surface is used for facing away from the Micro-LED chip, the right eye imaging optical path firstly penetrates through the right eye incident surface to extend to the right eye reflecting surface, then is bent in a reflection mode by the right eye reflecting surface to extend to the right eye incident surface, and then is bent in a total reflection mode by the right eye incident surface to extend to the right eye emergent surface to penetrate out.

According to an embodiment of the present application, the left eye entrance face of the left eye imaging element and the right eye entrance face of the right eye imaging element are obliquely arranged face to face.

According to an embodiment of the present application, the left eye imaging element and the right eye imaging element are optical prisms, and the left eye reflective surface and the right eye reflective surface are surfaces coated with a high reflective film or an angle selective film.

According to an embodiment of the present application, a surface type of the left eye incident surface, the left eye reflecting surface, and the left eye emitting surface in the left eye imaging element is selected from one of a plane, an aspherical surface, and a free-form surface; wherein the surface type of the right eye incident surface, the right eye reflecting surface and the right eye emergent surface in the right eye imaging element is selected from one of a plane, an aspheric surface and a free-form surface.

According to an embodiment of the present application, the left eye imaging element is integrally connected with the right eye imaging element.

According to an embodiment of the present application, the binocular imaging unit further includes a left eye steering element corresponding to the left eye imaging optical path and a right eye steering element corresponding to the right eye imaging optical path, wherein the left eye steering element is used to change the extending direction of the left eye imaging optical path and the right eye steering element is used to change the extending direction of the right eye imaging optical path.

According to an embodiment of the present application, the left-eye turning element and the right-eye turning element are both total reflection prisms or curved prisms.

According to an embodiment of the application, the special-shaped binocular imaging unit is integrally formed by a light-transmitting material.

According to another aspect of the present application, there is further provided a binocular display optical machine, including:

a single Micro-LED chip, wherein the Micro-LED chip is configured to emit image light, wherein the image light includes a first angle light beam and a second angle light beam, and an exit angle range of the first angle light beam does not intersect an exit angle range of the second angle light beam; and

a special-shaped binocular imaging unit, wherein the special-shaped binocular imaging unit is correspondingly disposed at a light emitting side of the single Micro-LED chip, and the special-shaped binocular imaging unit includes:

a left eye imaging element, wherein the left eye imaging element is correspondingly arranged at the left part of the light emitting side of the Micro-LED chip, and the left eye imaging element is provided with a left eye imaging optical path for enabling the first angle light beam emitted by the Micro-LED chip to propagate along the left eye imaging optical path for left eye imaging; and

a right eye imaging element, wherein the right eye imaging element is correspondingly arranged at the right part of the light emitting side of the Micro-LED chip, and the right eye imaging element is provided with a right eye imaging optical path for enabling the second angle light beam emitted by the Micro-LED chip to propagate along the right eye imaging optical path for right eye imaging.

According to an embodiment of the present application, the left eye imaging element has a left eye incident surface facing the Micro-LED chip, a left eye reflecting surface facing away from the Micro-LED chip, and a left eye exit surface, and the left eye imaging optical path first penetrates the left eye incident surface to extend to the left eye reflecting surface, then is bent by the left eye reflecting surface in a reflective manner to extend to the left eye incident surface, and then is bent by the left eye incident surface in a total reflective manner to extend to the left eye exit surface to exit; the right eye imaging element is provided with a right eye incident surface facing the Micro-LED chip, a right eye reflecting surface and a right eye emergent surface, wherein the right eye reflecting surface is back to the Micro-LED chip, the right eye imaging optical path firstly penetrates into the right eye incident surface to extend to the right eye reflecting surface, and then is bent in a reflecting manner by the right eye reflecting surface to extend to the right eye incident surface, and then is bent in a totally reflecting manner by the right eye incident surface to extend to the right eye emergent surface to penetrate out.

According to an embodiment of the present application, the binocular displaying optical machine further comprises a pair of aperture stops, wherein the aperture stops are respectively correspondingly disposed at the coupling-out sides of the left eye turning element and the right eye turning element.

According to an embodiment of the application, the binocular display optical machine further comprises a compensation prism, wherein the compensation prism is arranged in a light path between the Micro-LED chip and the special-shaped binocular imaging unit.

Drawings

Fig. 1 is a schematic structural diagram of a binocular display optical machine according to an embodiment of the present application;

fig. 2 shows a state diagram of Micro-LED chips in the binocular display optical machine according to the above embodiment of the present application.

Fig. 3 shows an application example of the binocular display optical machine according to the above-described embodiment of the present application.

Fig. 4 shows a variant example of the binocular displaying light machine according to the above-described embodiment of the present application.

Fig. 5 shows a variant implementation of the special-shaped binocular imaging unit in the binocular displaying light machine according to the above-described embodiment of the present application.

Fig. 6 shows a first variant implementation of the binocular displaying light machine according to the above-described embodiment of the present application.

Fig. 7 shows a second variant of the binocular displaying light machine according to the above-described embodiment of the present application.

Fig. 8 is an example of a near-eye display device according to an embodiment of the present application.

Fig. 9 is a schematic flow diagram of a binocular imaging method according to an embodiment of the present application.

Description of the main element symbols: 1. a binocular display optical machine; 10. a Micro-LED chip; 100. image light; 101. a first angle beam; 102. a second angle beam; 20. a special-shaped binocular imaging unit; 21. a left eye imaging element; 210. a left eye imaging optical path; 2101. a left eye incident plane; 2102. a left eye reflective surface; 2103. a left eye exit surface; 22. a right eye imaging element; 220. a right eye imaging optical path; 2201. a right eye incident plane; 2202. a right eye reflective surface; 2203. a right eye exit surface; 23. a left eye steering element; 24. a right eye steering element; 200. a turning prism; 201. a total reflection prism; 202. a curved prism; 30. an aperture diaphragm; 40. a compensation prism; 5. an apparatus main body; 51. a left eye waveguide; 52. and a right eye waveguide.

The present application will be described in further detail with reference to the drawings and the detailed description.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.

In the present invention, the terms "a" and "an" in the claims and the description should be understood as meaning "one or more", that is, one element may be one in number in one embodiment, and the element may be more than one in number in another embodiment. The terms "a" and "an" should not be construed as limiting the number unless the number of such elements is explicitly recited as one in the present disclosure, but rather the terms "a" and "an" should not be construed as being limited to only one of the number.

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The existing binocular display equipment generally uses two Micro-LED chips to respectively provide image light for left and right eyes, but on one hand, the cost of the equipment is high due to the high price of the Micro-LED chips, on the other hand, the serious power dissipation problem exists, and the power dissipation problem is always a problem that the whole near-eye display machine is not negligible in the development process. In addition, because the light-emitting angle of the Micro-LED chip is relatively large, the existing binocular display equipment can only utilize the light beams within a certain beam aperture angle emitted by the Micro-LED chip, and the energy of the light beams at other angles is wasted, so that the available beam aperture angle of the existing binocular display equipment is relatively small, and the problem of low energy utilization rate exists.

In order to solve the above problems, the present application creatively provides a binocular near-eye display scheme based on a single Micro-LED chip, which respectively performs left eye imaging and right eye imaging by using two light beams emitted by the single Micro-LED chip within two different exit angle ranges, so that an originally available beam aperture angle is doubled, so as to maximally utilize the exit energy of the single Micro-LED chip, and reduce energy waste.

With reference to fig. 1 to 3 of the drawings accompanying the present specification, there is provided a binocular display optical machine 1 according to an embodiment of the present application, which is adapted to cooperate with an optical waveguide to form a near-eye display apparatus capable of implementing binocular display. Specifically, as shown in fig. 1 and 2, the binocular displaying light machine 1 may include a single Micro-LED chip 10 and the special-shaped binocular imaging unit 20 correspondingly disposed on a light emitting side of the single Micro-LED chip 10. The Micro-LED chip 10 is configured to emit image light 100, wherein the image light 100 comprises a first angle light beam 101 and a second angle light beam 102, and an exit angle range of the first angle light beam 101 does not intersect an exit angle range of the second angle light beam 102.

As shown in fig. 1 and 3, the special-shaped binocular imaging unit 20 may include a left eye imaging element 21 and a right eye imaging element 22 which are oppositely arranged, wherein the left eye imaging element 21 is adapted to be correspondingly disposed at a left portion of a light emitting side of the Micro-LED chip 10, and the left eye imaging element 21 has a left eye imaging optical path 210 such that the first angle light beam 101 in the image light 100 emitted via the Micro-LED chip 10 propagates along the left eye imaging optical path 210 for left eye imaging; wherein said right eye imaging element 22 is adapted to be correspondingly disposed at the right portion of the light emitting side of said Micro-LED chip 10, and said right eye imaging element 22 has a right eye imaging optical path 220, such that the second angle light beam 102 in the image light 100 emitted via said Micro-LED chip 10 propagates along said right eye imaging optical path 220 for right eye imaging.

It should be noted that, since the special-shaped binocular imaging unit 20 of the present application can transmit the first angle light beam 101 and the second angle light beam 102 in the image light 100 emitted by the Micro-LED chip 10 along the left eye imaging light path 210 and the right eye imaging light path 220, respectively, to correspondingly perform left eye imaging and right eye imaging, and further implement binocular display, the special-shaped binocular imaging unit 20 of the present application can utilize the light rays emitted by the Micro-LED chip 10 in two different angle ranges, expand the originally available beam aperture angle by two times, and utilize the emergent energy of the Micro-LED chip 10 to a greater extent, thereby not only reducing energy waste, but also reducing the number of the requirements of the binocular display light machine on the Micro-LED chip, and reducing cost and power consumption.

Further, as shown in fig. 2, the exit angle of the first angle light beam 101 in the image light 100 emitted via the Micro-LED chip 10 may be, but is not limited to, implemented as a negative angle, i.e., a light beam propagating toward the upper left in the image light 100 emitted via the Micro-LED chip 10; accordingly, the exit angle of this second angle light beam 102 in the image light 100 emitted via the Micro-LED chip 10 may be, but is not limited to, implemented as a positive angle, i.e. a light beam propagating towards the upper right in the image light 100 emitted via the Micro-LED chip 10.

It can be understood that, although there is a scheme of implementing binocular display by using one display chip in the prior art, a beam splitter is usually used to split a light beam emitted by the display chip at the same angle into two beams of light for left-eye imaging and right-eye imaging respectively, and this technical scheme not only can use light beams within a certain beam aperture angle, but also wastes the energy of light beams at other angles, and because the light beam at the same angle is split into two beams of light, the light energy of each beam of light is halved or even lower, resulting in lower image brightness for left-eye display and right-eye display, which cannot meet the user's requirements. If the emission energy of the Micro-LED chip is greatly increased to increase the screen brightness, a larger power consumption is generated, resulting in a more serious problem of power consumption and heat dissipation. Meanwhile, the binocular display optical machine 1 only utilizes a single Micro-LED chip 10, so that the overall structure of the equipment is more compact, and the requirements of miniaturization and light weight of the product are met.

More specifically, as shown in fig. 1 and 3, the left eye imaging element 21 of the special-shaped binocular imaging unit 20 may have a left eye incident surface 2101 facing the Micro-LED chip 10, a left eye reflecting surface 2102 facing away from the Micro-LED chip 10, and a left eye exit surface 2103, wherein the left eye imaging optical path 210 of the left eye imaging element 21 first penetrates the left eye incident surface 2101 to extend to the left eye reflecting surface 2102, then is bent by the left eye reflecting surface 2102 in a reflecting manner to extend to the left eye incident surface 2101, then is bent by the left eye incident surface 2101 in a total reflection manner to extend to the left eye exit surface 2103 to exit, so that the first angle light beam 101 propagating along the left eye imaging optical path 210 first enters the left eye incident surface 2101 to propagate to the left eye reflecting surface 2102, then is reflected by the left eye reflecting surface 2102 to the left eye incident surface 2101, is totally reflected by the left eye incident surface 2101 to be emitted through the left eye emitting surface 2103, thereby realizing left eye imaging.

It is understood that when the first angle light beam 101 emitted through the Micro-LED chip 10 propagates to the left eye incident surface 2101 for the first time, it can penetrate the left eye incident surface 2101 to enter the left eye imaging element 21 because a total reflection condition is not satisfied; when the first angle light beam 101 is reflected by the left eye reflecting surface 2102 to propagate to the left eye incident surface 2101 for the second time, a critical total reflection condition is satisfied and total reflection occurs at the left eye incident surface 2101. That is, the left eye incident surface 2101 of the left eye imaging element 21 serves as both an incident surface and a total reflection surface to ensure that the left eye imaging optical path 210 is formed in the left eye imaging element 21, and also contributes to reduction of light loss and improvement of imaging brightness.

Likewise, as shown in fig. 1 and 3, the right eye imaging element 22 of the special-shaped binocular imaging unit 20 may have a right eye incident surface 2201 facing the Micro-LED chip 10, a right eye reflecting surface 2202 facing away from the Micro-LED chip 10, and a right eye exit surface 2203, wherein the right eye imaging optical path 220 of the right eye imaging element 22 first penetrates into the right eye incident surface 2201 to extend to the right eye reflecting surface 2202, then is reflected by the right eye reflecting surface 2202 to extend to the right eye incident surface 2201, then is totally reflected by the right eye incident surface 2201 to extend to the right eye exit surface 2203 to exit, so that the second angle light beam 102 propagating along the right eye imaging optical path 220 first enters through the right eye incident surface 2201 to propagate to the right eye reflecting surface 2202, then is reflected by the right eye reflecting surface 2202 to the right eye incident surface 2201, is totally reflected by the right eye incident surface 2201 to be emitted through the right eye emitting surface 2203 to realize right eye imaging.

It is understood that when the second angle light beam 102 emitted by the Micro-LED chip 10 propagates to the right eye incident surface 2201 for the first time, the second angle light beam can penetrate through the right eye incident surface 2201 to enter the right eye imaging element 22 because the total reflection condition is not satisfied; when the second angle light beam 102 is reflected by the right eye reflective surface 2202 to propagate to the right eye incident surface 2201 for the second time, the critical total reflection condition is satisfied and total reflection occurs at the right eye incident surface 2201. That is, the right eye incident surface 2201 of the right eye imaging element 22 serves as both an incident surface and a total reflection surface, so as to ensure that the right eye imaging optical path 220 is formed in the right eye imaging element 22, and also contribute to reducing light loss and improving imaging brightness.

It is to be noted that the left eye incident surface 2101 of the left eye imaging element 21 and the right eye incident surface 2201 of the right eye imaging element 22 are arranged obliquely face to face so as to make a mounting space for the Micro-LED chip 10 between the left eye incident surface 2101 and the right eye imaging element 22, while ensuring that the first angle light beam 101 and the second angle light beam 102 emitted via the Micro-LED chip 10 are incident from the left eye incident surface 2101 and the right eye incident surface 2201, respectively.

Illustratively, the left eye imaging element 21 and the right eye imaging element 22 may be, but are not limited to being, implemented as optical prisms, and the left eye reflective surface 2102 of the left eye imaging element 21 and the right eye reflective surface 2202 of the right eye imaging element 22 may be, but are not limited to being, implemented as high reflective film-plated surfaces. It is noted that in other examples of the present application, the left eye reflective surface 2102 and the right eye reflective surface 2202 may also be implemented as angle selective film coated surfaces or as film free surfaces utilizing critical total reflection conditions to achieve reflection.

Preferably, as shown in fig. 1 and 3, the left eye imaging member 21 is integrally connected to the right eye imaging member 22. In other words, the left eye imaging element 21 and the right eye imaging element 22 are integrally formed, which helps to reduce the manufacturing difficulty of the special-shaped binocular imaging unit 20 and improve the manufacturing accuracy. It is understood that the left eye imaging element 21 and the right eye imaging element 22 in the shaped binocular imaging unit 20 may be integrally formed by, but not limited to, an injection molding process.

Alternatively, the surface types of the left eye incident surface 2101, the left eye reflecting surface 2102 and the left eye exit surface 2103 in the left eye imaging element 21 may be selected from one of a flat surface, an aspherical surface and a free-form surface. Similarly, the surface shapes of the right eye incident surface 2201, the right eye reflecting surface 2202 and the right eye exit surface 2203 in the right eye imaging element 22 may be selected from one of a plane, an aspherical surface and a free-form surface.

It is to be noted that, according to the above-mentioned embodiment of the present application, as shown in fig. 1 and fig. 3, the special-shaped binocular imaging unit 20 may further include a left eye turning element 23 corresponding to the left eye imaging optical path 210 and a right eye turning element 24 corresponding to the right eye imaging optical path 220, wherein the left eye turning element 23 is configured to change an extending direction of the left eye imaging optical path 210, so that a propagation direction of the first angle light beam 101 emitted from the left eye exit surface 2103 of the left eye imaging element 21 is changed to propagate to the optical waveguide corresponding to the left eye to realize left eye display; wherein the right eye turning element 24 is configured to change the extending direction of the right eye imaging optical path 220, so that the propagation direction of the second angle light beam 102 emitted from the right eye exit surface 2203 of the right eye imaging element 22 is changed to propagate to the optical waveguide corresponding to the right eye to realize right eye display.

In particular, the left eye steering element 23 and the right eye steering element 24 may be, but are not limited to being, implemented as a steering prism 200.

Exemplarily, in an application example of the present application, as shown in fig. 3, each of the left eye turning element 23 and the right eye turning element 24 is implemented as a total reflection prism 201, that is, each of the surface shapes of the functional surfaces on the left eye turning element 23 and the right eye turning element 24 is implemented as a plane, and the coupling-out directions of the first angle beam 101 and the second angle beam 102 are changed by means of total reflection.

In one modified example of the present application, as shown in fig. 4, each of the left eye turning element 23 and the right eye turning element 24 is implemented as a curved prism 202, that is, the surface type of each functional surface on the left eye turning element 23 and the right eye turning element 24 may be implemented, but not limited to, as an aspherical surface or a free-form surface, so as to further modulate the light beam while changing the optical path direction, so as to improve the imaging quality.

According to the above-mentioned embodiment of the present application, as shown in fig. 1 to fig. 4, the binocular displaying optical machine 1 may further include a pair of aperture stops 30, wherein the aperture stops 30 are respectively and correspondingly disposed on the coupling-out sides of the left eye turning element 23 and the right eye turning element 24, for respectively and correspondingly limiting the coupled-out first angle light beam 101 and the second angle light beam 102, which helps to eliminate stray light, so as to improve the imaging quality. It is understood that the aperture stop 30 may be implemented as, but is not limited to, a fixed stop or an iris.

It should be noted that, in the above-mentioned embodiment of the present application, although the left eye imaging element 21 and the right eye imaging element 22 in the special-shaped binocular imaging unit 20 are integrally formed, the left eye steering element 23 and the right eye steering element 24 are separately manufactured, so that the special-shaped binocular imaging unit 20 is still separated as a whole, which is easy to bring a certain trouble to assembly. In order to further reduce the manufacturing cost and assembly difficulty of the deformed binocular imaging unit 20, fig. 5 shows a modified embodiment of the deformed binocular imaging unit 20 according to the above-described embodiment of the present application. In particular, the deformed binocular imaging unit 20 according to the variant embodiment of the present application differs from the above-described embodiment of the present application in that: as shown in fig. 5, the binocular imaging unit 20 may have an integral structure, that is, the left eye steering element 23 integrally connects the left eye imaging element 21, and the right eye steering element 24 integrally connects the right eye imaging element 22.

Preferably, the specially-shaped binocular imaging unit 20 is integrally formed of a light-transmitting material. Optionally, the left eye imaging element 21, the right eye imaging element 22, the left eye steering element 23 and the right eye steering element 24 in the special-shaped binocular imaging unit 20 are made of the same transparent material through an injection molding process. It is understood that, in this modified embodiment of the present application, both of the left eye exit face 2103 of the left eye imaging element 21 and the right eye exit face 2203 of the right eye imaging element 22 are implemented as virtual faces and do not exist.

It should be noted that, in the above embodiments and various examples of the present application, a relatively large gap is formed between the Micro-LED chip 10 in the binocular display optical machine 1 and the left eye incident surface 2101 and the right eye incident surface 2201 on the special-shaped binocular imaging unit 20, and the left eye incident surface 2101 and the right eye incident surface 2201 are not parallel to the exit surface of the Micro-LED chip 10, so that there is an optical path difference between the light beams of different fields of view in the image light 100 exiting through the Micro-LED chip 10 during the imaging process, which brings adverse effects to the quality of binocular display. To solve this problem, fig. 6 shows a first variant of the binocular displaying light engine 1 according to the above-described embodiment of the present application. Specifically, the binocular display light machine 1 according to this variant embodiment of the present application differs from the above-described example according to the present application in that: as shown in fig. 6, the binocular display optical machine 1 may further include a compensation prism 40, wherein the compensation prism 40 is disposed in an optical path between the Micro-LED chip 10 and the special-shaped binocular imaging unit 20, and the compensation prism 40 and the special-shaped binocular imaging unit 20 are arranged at an interval to form an air gap between the compensation prism 40 and the left eye incident surface 2101 and the right eye incident surface 2201 in the special-shaped binocular imaging unit 20, so as to compensate optical paths of rays of different fields of view in the first angle beam 101 and the second angle beam 102 to be uniform while ensuring a total reflection function of the left eye incident surface 2101 and the right eye incident surface 2201, which helps to improve a binocular display quality of the binocular display optical machine 1.

It is to be noted that in the above-mentioned embodiments and various examples of the present application, the coupling-out surfaces of the left-eye turning element 23 and the right-eye turning element 24 and the Micro-LED chip 10 are located on different sides of the special-shaped binocular imaging unit 20, so that the propagation directions of the first angle light beam 101 and the second angle light beam 102 respectively turned by the left-eye turning element 23 and the right-eye turning element 24 are both the same as the exit direction of the Micro-LED chip 10. Of course, in other examples of the present application, the propagation directions of the first and second angular

light beams

101 and 102 after being turned by the left and right

eye turning elements

23 and 24, respectively, may also be different from the exit direction of the Micro-LED chip 10.

Fig. 7 shows, by way of example, a second variant of the binocular displaying light machine 1 according to the above-described embodiment of the present application, in which the coupling-out surfaces of the left eye steering element 23 and the right eye steering element 24 are located on the same side of the shaped binocular imaging unit 20 as the Micro-LED chip 10, so that the direction of propagation of the steered first angle beam 101 and the second angle beam 102 is opposite to the direction of exit of the Micro-LED chip 10.

It is worth mentioning, referring to fig. 8 of the drawings attached to the present specification, there is further provided a near-eye display device according to an embodiment of the present application, wherein the near-eye display device includes a device main body 5 and the above-mentioned binocular display light machine 1, wherein the binocular display light machine 1 is configured to the device main body 5, and the device main body 5 is configured to transmit the first angle light beam 101 and the second angle light beam 102 coupled out via the binocular display light machine 1 to be incident to a left eye and a right eye of a user, respectively, thereby implementing binocular near-eye display.

Exemplarily, as shown in fig. 8, the apparatus body 5 includes a left eye waveguide 51 and a right eye waveguide 52, wherein the left eye imaging element 21 in the shaped binocular imaging unit 20 of the binocular display machine 1 corresponds to the left eye waveguide 51 to realize left eye near-eye display by transmitting the first angle light beam 101 into the left eye of the user through the left eye waveguide 51; wherein the right eye imaging element 22 in the special-shaped binocular imaging unit 20 of the binocular display light machine 1 corresponds to the right eye waveguide 52 to transmit the second angle light beam 102 to the right eye of the user through the right eye waveguide 52 to realize the right eye near-to-eye display.

It should be noted that, in the above embodiments of the present application, the left eye waveguide 51 and the right eye waveguide 52 are independent from each other, and in another example of the present application, the left eye waveguide 51 and the right eye waveguide 52 may also be integrated as long as the first angle light beam 101 and the second angle light beam 102 can be respectively transmitted to the left eye and the right eye of the user to realize binocular near-eye display, which is not described herein again.

In addition, in other embodiments of the present application, the device body 5 of the near-eye display device may also be implemented, but is not limited to be implemented as other functional elements, such as a birdbath or a mirror, which can transmit the first angle light beam 101 and the second angle light beam 102 to the left eye and the right eye of the user, respectively, and the details are not repeated herein.

It is worth mentioning that, referring to fig. 9 of the drawings attached to the present specification, there is further provided a binocular imaging method according to an embodiment of the present application, wherein the binocular imaging method may include the steps of:

s100: propagating a first angle light beam in the image light emitted by the single Micro-LED chip along a left eye imaging optical path to perform left eye imaging; and

s200: and transmitting a second angle light beam in the image light emitted by the Micro-LED chip along a right-eye imaging optical path to perform right-eye imaging, wherein the emergent angle range of the first angle light beam is not intersected with the emergent angle range of the second angle light beam.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The special-shaped binocular imaging unit is used for being correspondingly arranged on the light emitting side of the single Micro-LED chip, and is characterized in that the special-shaped binocular imaging unit comprises:

2. The binocular special-shaped imaging unit according to claim 1, wherein the left eye imaging element has a left eye incident surface for facing the Micro-LED chip, a left eye reflecting surface for facing away from the Micro-LED chip, and a left eye exit surface, and the left eye imaging optical path penetrates the left eye incident surface to extend to the left eye reflecting surface, and then is bent by the left eye reflecting surface in a reflecting manner to extend to the left eye incident surface, and then is bent by the left eye incident surface in a totally reflecting manner to extend to the left eye exit surface to exit; the right eye imaging element is provided with a right eye incident surface, a right eye reflecting surface and a right eye emergent surface, the right eye incident surface is used for facing the Micro-LED chip, the right eye reflecting surface is used for facing away from the Micro-LED chip, the right eye imaging optical path firstly penetrates through the right eye incident surface to extend to the right eye reflecting surface, then is bent in a reflection mode by the right eye reflecting surface to extend to the right eye incident surface, and then is bent in a total reflection mode by the right eye incident surface to extend to the right eye emergent surface to penetrate out.

3. The binocular heteromorphic imaging unit of claim 2, wherein the left eye entrance face of the left eye imaging element is obliquely disposed face to face with the right eye entrance face of the right eye imaging element.

4. The binocular special-shaped imaging unit of claim 3, wherein the left eye imaging element and the right eye imaging element are optical prisms, and the left eye reflective surface and the right eye reflective surface are surfaces plated with a high reflective film or an angle selective film.

5. The binocular special-shaped imaging unit of claim 2, wherein the left eye entrance surface, the left eye reflection surface and the left eye exit surface in the left eye imaging element have a surface type selected from one of a plane, an aspherical surface and a free curved surface; wherein the surface type of the right eye incident surface, the right eye reflecting surface and the right eye emergent surface in the right eye imaging element is selected from one of a plane, an aspheric surface and a free-form surface.

6. The binocular shaped imaging unit of any one of the claims 1 to 5, wherein the left eye imaging element integrally connects the right eye imaging element.

7. The binocular imaging unit of claim 6, further comprising a left eye steering element corresponding to the left eye imaging optical path and a right eye steering element corresponding to the right eye imaging optical path, wherein the left eye steering element is configured to change the direction of extension of the left eye imaging optical path and the right eye steering element is configured to change the direction of extension of the right eye imaging optical path.

8. The binocular special-shaped imaging unit of claim 7, wherein the left eye steering element and the right eye steering element are both total reflection prisms or curved prisms.

9. The binocular disparity imaging unit of claim 7, wherein the binocular disparity imaging unit is integrally formed of a light transmissive material.

10. Binocular shows ray apparatus, its characterized in that includes:

11. The binocular display optical machine of claim 10, wherein the left eye imaging element has a left eye incident surface facing the Micro-LED chip, a left eye reflective surface facing away from the Micro-LED chip, and a left eye exit surface, and the left eye imaging optical path penetrates the left eye incident surface to extend to the left eye reflective surface, then is reflectively bent by the left eye reflective surface to extend to the left eye incident surface, and is reflectively bent by the left eye incident surface to extend to the left eye exit surface to exit; the right eye imaging element is provided with a right eye incident surface facing the Micro-LED chip, a right eye reflecting surface and a right eye emergent surface, wherein the right eye reflecting surface is back to the Micro-LED chip, the right eye imaging optical path firstly penetrates into the right eye incident surface to extend to the right eye reflecting surface, and then is bent in a reflecting manner by the right eye reflecting surface to extend to the right eye incident surface, and then is bent in a totally reflecting manner by the right eye incident surface to extend to the right eye emergent surface to penetrate out.

12. The binocular displaying light machine of claim 11, wherein the shaped binocular imaging unit further comprises a left eye steering element corresponding to the left eye imaging light path and a right eye steering element corresponding to the right eye imaging light path, wherein the left eye steering element is configured to change the direction of extension of the left eye imaging light path and the right eye steering element is configured to change the direction of extension of the right eye imaging light path.

13. The binocular displaying light machine of claim 12, further comprising a pair of aperture stops, wherein the aperture stops are disposed at the coupled-out sides of the left eye turning element and the right eye turning element, respectively, correspondingly.

14. The binocular display optical machine of any of the claims 11 to 13, further comprising a compensation prism, wherein the compensation prism is disposed in an optical path between the Micro-LED chip and the profiled binocular imaging unit.