CN113934000A

CN113934000A - Optical device, optical system, display device, display apparatus, and display system

Info

Publication number: CN113934000A
Application number: CN202111234923.XA
Authority: CN
Inventors: 翁志彬; 来颖
Original assignee: Pimax Technology Shanghai Co ltd
Current assignee: Pimax Technology Shanghai Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-01-14
Also published as: WO2023066390A1

Abstract

The invention relates to the field of virtual reality/augmented reality display, and provides an optical device, an optical system, a display device, display equipment and a display system, which comprise an image source, a collimating prism and a light guide mechanism, wherein the collimating prism comprises a first reflecting surface and a second reflecting surface inside, and the first reflecting surface and the second reflecting surface shape image light entering the collimating prism into collimated image light; the light guide mechanism optically couples the collimated image into the inside of the light guide mechanism for propagation, and optically couples the collimated image propagated in the light guide mechanism out. Image light used for display is emitted by an image source, after the image light enters a collimating prism, the first reflecting surface and the second reflecting surface shape the image light into collimated image light, then the collimated image light is coupled into a light guide mechanism to be transmitted, and then the light guide mechanism couples out the collimated image light for watching. The invention only adopts the first reflecting surface and the second reflecting surface to realize collimation, and has more compact integral light path structure, small integral volume, light weight and low cost.

Description

Optical device, optical system, display device, display apparatus, and display system

Technical Field

The invention relates to the field of virtual reality/augmented reality display, in particular to an optical device, an optical system, a display device, display equipment and a display system.

Background

One of the most widely used schemes of the current virtual reality/augmented reality display devices is a geometric optical waveguide architecture, the optical module of the scheme includes: the micro display, the eyepiece group and the optical waveguide are arranged in the optical waveguide, a plurality of array reflecting surfaces with the same angle are arranged in the optical waveguide, and the reflecting surfaces are plated with anti-reflection medium films. The micro display is arranged at the front end of the eyepiece group and used for emitting light, and the eyepiece group is positioned at the coupling end of the optical waveguide and used for shaping image light emitted by the display into parallel light and then coupling the parallel light into the optical waveguide. The light is transmitted in the optical waveguide in a total reflection way and is coupled out to human eyes after passing through the array reflecting surface in the optical waveguide. In the prior art, need adopt the lens group that comprises a plurality of lens to carry out the collimation to image light, the structure of battery of lens is generally comparatively complicated, occupies bulky and weight heavy, can improve whole virtual reality/augmented reality display device's volume and weight, has reduced the use convenience.

Disclosure of Invention

In view of the above, the present invention provides an optical device, an optical system, a display device, a display apparatus, and a display system, which can perform a collimating operation of image light with a smaller volume and a lighter weight.

To solve the above technical problem, the present invention provides a near-eye display optical device, comprising: an image source emitting image light; collimating prism installs on the light-emitting direction of image source, collimating prism's inside includes first plane of reflection and second plane of reflection, first plane of reflection is located on the light-emitting direction of image source, the second plane of reflection is located on the direction of reflection of first plane of reflection, first plane of reflection with the second plane of reflection constructs to be: shaping the image light entering the collimating prism into collimated image light; and a light guide mechanism installed in the light exit direction of the second reflection surface, the light guide mechanism being configured to: and optically coupling the collimated image into the light guide mechanism for transmission, and optically coupling the collimated image transmitted in the light guide mechanism out.

Optionally, the reflective surface of the first reflective surface and the reflective surface of the second reflective surface are both free-form surfaces.

Optionally, an included angle between the optical axis of the image source and the normal at the geometric center of the first reflective surface is any value from 0 ° to 90 °, and an included angle between the normal at the geometric center of the first reflective surface and the normal at the geometric center of the second reflective surface is any value from 0 ° to 90 °.

Optionally, one side of the first reflecting surface is in contact with one side of the second reflecting surface.

Optionally, the inner part of the collimating prism further comprises: a first transmissive surface disposed on an optical path between the image source and the first reflective surface.

Optionally, the optical surface of the first transmission surface is a free-form surface.

Optionally, the inner part of the collimating prism further comprises: and the second transmission surface is arranged on an optical path between the second reflection surface and the light guide mechanism.

Optionally, the optical surface of the second transmission surface is a free-form surface.

Optionally, the light guide mechanism includes: an optical waveguide; a coupling-in member mounted on one side surface of the optical waveguide, the coupling-in member being located in a reflection direction of the second reflection surface, the coupling-in member being configured to: the collimated image light emitted by the collimating prism is coupled into the optical waveguide for total reflection propagation; and a coupling-out assembly mounted on the optical waveguide, the coupling-out assembly being configured to: and optically coupling the collimation image propagated by the total internal reflection of the optical waveguide out of the optical waveguide.

Optionally, the coupling-in component is a polygonal prism, and the coupling-in component includes a first surface and a second surface, the first surface is partially attached to one side surface of the optical waveguide, and the second surface is located in a reflection direction of the second reflection surface.

In another embodiment, the present invention provides an optical system comprising: in the aforementioned near-eye display optical device, the two near-eye display optical devices are respectively used as a left-eye viewing component and a right-eye viewing component, and the left-eye viewing component and the right-eye viewing component are distributed in bilateral symmetry.

In another embodiment, the present invention provides a display device applied to a virtual reality device or an augmented reality device, the display device including: the near-eye display optical device is connected with the fixing structure.

Optionally, the display device further comprises: the head wearing assembly is connected with the fixing structure and used for being worn on the head of a person.

Optionally, the display device further comprises: a housing within which the optical system is housed.

Optionally, the display device further comprises: the camera, the camera lens of camera faces the people's eye.

In another embodiment, the invention provides a head-mounted display device, which includes the display apparatus, wherein the head-mounted assembly includes a glasses frame, the glasses frame includes temples or headbands, and the optical system is fixed between the temples or headbands.

In another embodiment, the present invention provides a display system, which is a virtual reality and/or augmented reality display system, and is characterized in that the display system includes a signal input module and the head-mounted display device, and the head-mounted display device receives a signal of the signal input module and transmits the signal to the head-mounted display device for processing.

Optionally, the signal input module includes an operation controller electrically connected to the head-mounted display device.

Optionally, the display system is a virtual and/or augmented reality display all-in-one machine, and the head-mounted display device is provided with an independent central processing unit for controlling the operation controller and displaying the content.

The invention has the beneficial effects that: when the image display device is used, image light emitted by an image source is used as displayed image light, and the image light emitted by each pixel point of the image source is divergent light. After the image light enters the collimating prism, the first reflecting surface and the second reflecting surface shape the image light into collimated image light, then the collimated image light is coupled into the light guide mechanism to be transmitted, then the light guide mechanism couples out the collimated image light for watching, and the image light coupled out from the light guide mechanism is focused at infinity. The collimating work of the image light can be realized through the first reflecting surface and the second reflecting surface, and a complex structure that a lens group consisting of a plurality of lenses is adopted in the traditional technology for collimating is not needed. Only adopt first plane of reflection and second plane of reflection to realize the collimation, whole light path structure is compacter, and whole small and light in weight, low cost.

Drawings

Fig. 1 is a schematic structural diagram of a near-eye display optical device according to a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a near-eye display optical device according to a second embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a display system according to a third embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a near-to-eye display optical device which comprises an image source, a collimating prism and a light guide mechanism. Image source is used for emergent image light, and collimating prism installs on the light-emitting direction of image source, and collimating prism's inside includes first plane of reflection and second plane of reflection, and first plane of reflection is located the light-emitting direction of image source, and the second plane of reflection is located the direction of reflection of first plane of reflection, and first plane of reflection and second plane of reflection construct jointly and do: the image light entering the collimating prism is shaped into collimated image light. The light guide mechanism is installed on the light-emitting direction of the second reflecting surface, and the light guide mechanism is structured as follows: and optically coupling the collimated image into the light guide mechanism for transmission, and optically coupling out the collimated image transmitted in the light guide mechanism.

The first embodiment:

The invention provides a near-eye display optical device, which comprises an image source 1, a collimating prism 2 and a light guide mechanism 3 in a first embodiment as shown in figure 1. The image source 1 emits image light. The collimating prism 2 is installed on the light-emitting direction of the image source 1, the inside of the collimating prism 2 comprises a first reflecting surface 21 and a second reflecting surface 22, the first reflecting surface 21 is located on the light-emitting direction of the image source 1, the second reflecting surface 22 is located on the reflecting direction of the first reflecting surface 21, and the first reflecting surface 21 and the second reflecting surface 22 are jointly constructed as follows: the image light entering the collimator prism 2 is shaped into collimated image light. The light guide mechanism 3 is installed in the light emitting direction of the second reflecting surface 22, and the light guide mechanism 3 is configured as follows: the collimated image light is coupled into the inside of the light guide mechanism 3 for propagation, and the collimated image light propagated in the light guide mechanism 3 is coupled out.

When the image display device is used, image light used for display is emitted by the image source 1, and the image light emitted by each pixel point of the image source 1 is divergent light. After the image light enters the collimating prism 2, the first reflecting surface 21 and the second reflecting surface 22 shape the image light into collimated image light, then the collimated image light is coupled into the light guide mechanism 3 for propagation, then the light guide mechanism 3 couples out the collimated image light for viewing, and the image light coupled out from the light guide mechanism 3 is focused at infinity.

Specifically, the image source 1 may be a transmissive image source, a reflective image source or a self-emissive image source, wherein the self-emissive image source may include a micro OLED display, a MEMS scanning display or a light scanning display. The light guide mechanism 3 may be a reflective array waveguide or a diffractive light waveguide, and such waveguides need to couple in image light as collimated light to be able to realize total reflection propagation in the waveguides. The first reflecting surface 21 and the second reflecting surface 22 may be manufactured in the following manner: the first reflecting surface 21 and the second reflecting surface 22 are made of medium surfaces with different refractive indexes in the collimating prism 2; or a first reflecting surface 21 and a second reflecting surface 22 are formed inside the collimating prism 2 in a film coating mode; alternatively, the first reflecting surface 21 and the second reflecting surface 22 are prepared in advance, and the prepared first reflecting surface 21 and second reflecting surface 22 are integrated into the collimator prism 2 when the collimator prism 2 is prepared.

In the embodiment, the collimating operation of the image light can be realized through the first reflecting surface 21 and the second reflecting surface 22, and a complex structure for collimating by using a lens group composed of a plurality of lenses in the conventional technology is not needed. The collimation is realized only by adopting the first reflecting surface 21 and the second reflecting surface 22, the light path structure is more compact, the whole volume is small, the weight is light, and the cost is low.

As shown in fig. 1, the reflecting surface of the first reflecting surface 21 and the reflecting surface of the second reflecting surface 22 are both free-form surfaces.

In use, the first and second

reflective surfaces

21, 22, whose reflective surfaces are free-form surfaces, achieve collimation of the image light. When the divergent image light emitted from the image source 1 is irradiated on the first reflecting surface 21, the first reflecting surface 21 performs a first reflective shaping on the image light, the image light subjected to the first shaping is further subjected to a second reflective shaping by the second reflecting surface 22, and the image light subjected to the second shaping becomes collimated light. The embodiment realizes the collimation of the image light through the two free-form surfaces, the two free-form surfaces can realize the off-axis shaping of the image light with small occupied volume, and the collimation can be realized without adopting a complex lens group. Since the first reflecting surface 21 and the second reflecting surface 22 are both free-form surfaces, collimation of image light can be achieved in a plurality of relative orientations, and in the case of different relative orientations, appropriate surface shapes may be designed for the first reflecting surface 21 and the second reflecting surface 22. The present embodiment can adaptively adjust the positions of the first reflective surface 21 and the second reflective surface 22 according to different packaging requirements of the whole near-eye display optical device, and for different positions, the appropriate surface type of the reflective surface may be designed specifically. Therefore, the first reflective surface 21 and the second reflective surface 22 can also improve the flexibility of assembly, and can be adapted to different packaging requirements of the near-eye display optical device.

Specifically, the surface shape parameters of the first reflective surface 21 and the second reflective surface 22 need to be designed according to the relative positions of the two, and generally, optical design software can be used to simulate and design what surface shape needs to be used under a certain relative position to realize the collimation and shaping of the image light.

As shown in fig. 1, the angle between the optical axis of the image source 1 and the normal at the geometric center of the first reflective surface 21 is any value from 0 ° to 90 °, and the angle between the normal at the geometric center of the first reflective surface 21 and the normal at the geometric center of the second reflective surface 22 is any value from 0 ° to 90 °.

In use, the image source 1, the first reflective surface 21 and the second reflective surface 22 form a folded reflective optical path, and the formation of the folded optical path can further reduce the volume of the collimating prism 2, so that the collimation of image light can be realized with a small volume. The image source 1, the first reflective surface 21 and the second reflective surface 22 can be arranged in the arrangement direction as shown in fig. 1 or fig. 3, and the specific included angle value needs to be optically designed according to the surface types of the reflective surfaces of the first reflective surface 21 and the second reflective surface 22.

In use, the interior of the collimating prism 2 of fig. 1 may further comprise a first transmissive surface 23, the first transmissive surface 23 being disposed in the optical path between the image source 1 and the first reflective surface 21.

In use, the first transmission surface 23 refracts the image light emitted from the image source 1, thereby changing the optical path of the image light emitted from the image source 1. By the first transmissive surface 23, the position of the image source 1 can be changed without changing the surface types of the first reflective surface 21 and the second reflective surface 22. The first transmission surface 23 of different refractive power may correspond to different relative positions of the image source 1 and the collimating prism 2. Specifically, the different refractive powers of the first transmission surfaces 23 may refer to different manufacturing materials, different placement angles of the first transmission surfaces 23, and different thicknesses of the first transmission surfaces 23. The embodiment can improve the flexibility of the system, the image source 1 can have more placing positions and angles relative to the collimating prism 2, and the appropriate first transmission surface 23 can be selected according to the design requirement of the whole near-eye display optical device.

As shown in fig. 1 and 2, the optical surface of the first transmission surface 23 is a free-form surface.

When the image source 1 is used, firstly, under the refraction action of the first transmission surface 23, the light path of the image light emitted by the image source 1 can be changed, the flexibility of the system can be improved, and the image source 1 can be placed at more positions and angles. Further, the first transmission surface 23 of the free-form surface is more excellent in the ability to shape the image light, and can shape the image light to a certain extent before the image light is irradiated onto the first reflection surface 21, thereby further improving the system flexibility. In addition, the first transmission surface 23 shapes the image light in cooperation with the first reflection surface 21 and the second reflection surface 22, and the difficulty in designing the first reflection surface 21 and the second reflection surface 22 can be reduced.

The interior of the collimating prism 2 as shown in fig. 1 may further comprise a second transmission surface 24, the second transmission surface 24 being arranged in the optical path between the second reflection surface 22 and the light guiding mechanism 3.

In use, the second transmissive surface 24 refracts the image light emitted from the second reflective surface 22, thereby changing the optical path of the image light emitted from the second reflective surface 22. By the second transmission surface 24, the light emitting path of the second reflection surface 22 can be changed without changing the surface types of the first reflection surface 21 and the second reflection surface 22. The second transmission surfaces 24 of different refractive powers may correspond to different relative positions of the collimating prism 2 and the light guiding means 3. Specifically, the different refractive powers of the second transmissive surfaces 24 may refer to different manufacturing materials, different placement angles of the second transmissive surfaces 24, and different thicknesses of the second transmissive surfaces 24. This embodiment can improve the system flexibility ratio, and collimating prism 2 can have more locating place and angle for light guide mechanism 3, can select suitable second transmission face 24 according to whole near-to-eye display optical device's design demand.

As shown in fig. 1, the optical surface of the second transmission surface 24 is a free-form surface.

When the light guide mechanism is used, firstly, under the refraction action of the second transmission surface 24, the light path of the image light emitted by the image source 1 can be changed, the flexibility of the system can be improved, and the collimating prism 2 can be placed at more positions and angles relative to the light guide mechanism 3. Further, the second transmission surface 24 of the free-form surface is more excellent in the ability to shape the image light, and can shape the image light to some extent before the image light is irradiated onto the light guide mechanism 3, thereby further improving the system flexibility. In addition, the second transmission surface 24 shapes the image light in cooperation with the first reflection surface 21 and the second reflection surface 22, which can reduce the difficulty in designing the first reflection surface 21 and the second reflection surface 22.

Second embodiment:

fig. 2 is a schematic structural diagram of a near-eye display optical device according to a second embodiment of the present invention. This embodiment differs from the first embodiment in that: as shown in fig. 2, one side of the first reflecting surface 21 is in contact with one side of the second reflecting surface 22. Other structures and designs of the present embodiment may employ the same structures and designs as those of the first embodiment.

When in use, one side of the first reflecting surface 21 is in contact with one side of the second reflecting surface 22, so that the volume of the collimating prism 2 can be made smaller, and the folded optical path formed by the first reflecting surface 21 and the second reflecting surface 22 is more compact. The included angle between the normal at the geometric center of the first reflecting surface 21 and the normal at the geometric center of the second reflecting surface 22 is close to 90 °, and the folded light path in the collimating prism 2 is close to the cross light path, so that the folded light path can be realized with smaller occupied volume, namely, the collimation of the image light is realized.

The third embodiment:

as shown in fig. 1 and 2, the light guide mechanism 3 includes: an optical waveguide 31, a coupling-in component 32 and a coupling-out component 33. The coupling-in member 32 is installed on one side surface of the optical waveguide 31, the coupling-in member 32 is located in a reflection direction of the second reflection surface 22, and the coupling-in member 32 is configured to: the collimated image light emitted from the collimating prism 2 is coupled into the optical waveguide 31 for total reflection propagation. The coupling-out member 33 is mounted on the optical waveguide 31, the coupling-out member 33 being configured to: the collimated image propagated by total internal reflection in the optical waveguide 31 is optically coupled out of the optical waveguide 31.

In use, the collimated image light is coupled into the optical waveguide 31 through the coupling-in component 32, and is propagated by total reflection in the optical waveguide 31, and the optical waveguide 31 expands the pupil of the collimated image light, so that the viewable area of the collimated image light is larger. Specifically, the coupling-in component 32 may employ a prism, a grating, and the like, and the coupling-out component 33 may employ an array reflecting surface, a grating, and the like.

When the coupling-out member 33 is an array reflective surface, the array reflective surface is arranged inside the optical waveguide 31. Specifically, the reflection surfaces arranged in the array are all partially transmissive and partially reflective surfaces, when the collimated image light is irradiated on the reflection surfaces arranged in the array, a part of the light is reflected and the angle cannot meet the total reflection condition of the optical waveguide 31, the reflected collimated image light exits from the inside of the optical waveguide 31 to the outside of the optical waveguide 31, the exiting collimated image light can be imaged outside the optical waveguide 31, and the image is imaged at infinity because the collimated image light is collimated light. The image light which is not reflected is irradiated on the next reflecting surface after passing through the front reflecting surface, and is reflected and refracted again. The transmittance of the reflective surfaces arranged in an array may be sequentially decreased in a direction away from the incoupling component 32, so that the brightness of the image light coupled out of the entire light guide 31 is more uniform. The arrayed reflective surfaces and the optical waveguide 31 constitute a reflective array waveguide in the conventional sense.

When the outcoupling element 33 is a grating, the grating is arranged inside or on the surface of the optical waveguide 31. The grating is capable of changing the propagation angle of the collimated image light impinging on the grating, thereby causing the collimated image light to be coupled out of the optical waveguide 31 and imaged. The diffraction efficiency of the grating is pre-designed such that the brightness of the collimated image light coupled out in a direction away from the incoupling component 32 is uniform. The grating and the optical waveguide 31 constitute a diffractive optical waveguide in the conventional sense.

When the collimating lens is used, the collimated image light shaped by the collimating prism 2 can be expanded to form a pupil, so that the visual range is wider, better viewing experience is achieved, and the image content emitted by the image source 1 can be conveniently viewed.

As shown in fig. 1 and 2, the coupling-in member 32 is a polygonal prism, and the coupling-in member 32 includes a first surface 321 and a second surface 322, the first surface 321 is partially attached to one side surface of the optical waveguide 31, and the second surface 322 is located in the reflection direction of the second reflection surface 22.

In use, the incoupling component 32 employs a prism to couple collimated image light into the optical waveguide 31, the collimated image light is incoupled into the incoupling component 32 from the second surface 322, and the collimated image light exits from the first surface 321. The optical path direction of the collimated image light is changed by the incoupling component 32 so that the total reflection condition of the optical waveguide 31 can be satisfied. The first surface 321 and the optical waveguide 31 are attached, which saves space and makes the whole structure more compact.

As shown in fig. 1 and 2, the surface of the collimating prism 2 facing the incoupling component 32 is parallel to the second surface 322. The space can be further saved, and the structure is more compact. It is also possible to attach the surface of the collimating prism 2 facing the incoupling component 32 and the second surface 322 to each other to further save space.

The fourth embodiment:

the present invention provides an optical system including: in the aforementioned near-eye display optical device, the two near-eye display optical devices are respectively used as a left-eye viewing component and a right-eye viewing component, and the left-eye viewing component and the right-eye viewing component are distributed in bilateral symmetry. In use, the left and right eyes of a user view images from two near-eye display optical devices, respectively.

Fifth embodiment:

the invention further provides a display device applied to virtual reality equipment or augmented reality equipment, in some embodiments, the display device comprises the optical system and a fixing structure, and the near-eye display optical device is connected with the fixing structure.

When the near-eye display optical device is used, when human eyes are located in the coupling-out direction of the coupling-out assembly, virtual reality or augmented reality images can be observed, the weight, the volume and the structural complexity of the display device can be reduced by the near-eye display optical device which is compact and light in structure, and therefore the whole display device is lighter, small in occupied volume and simple in structure. Specifically, the display device may be a virtual reality/augmented reality product such as a transmissive/non-transmissive display, or may be a head-mounted virtual reality/augmented reality product. The fixed structure provides support for the optical system, and avoids displacement of each part of the optical system in the use process, so that the durability of the optical system is ensured.

The display device further comprises a head wearing assembly, the head wearing assembly is connected with the fixing structure, and the head wearing assembly is used for being worn on the head of a person.

When the display device is used, the display device can be worn on the head of a user through the head wearing assembly, the head of the user provides support for the display device, and virtual reality or augmented reality images can be conveniently watched. The portable display device can make a user not to be tired when worn for a long time.

Optionally, the display device further includes a housing and a camera, the optical system is accommodated in the housing, and the housing can effectively protect the optical system from being damaged. The lens of the camera faces the human eyes, the camera can be used for executing an eye movement tracking function, and when the display device works, the camera shoots the human eyes at all times so as to obtain the fixation point positions of the human eyes.

Sixth embodiment:

the invention further provides head-mounted display equipment which comprises the display device, wherein the head wearing assembly comprises a glasses frame, the glasses frame comprises glasses legs or headbands, and the optical system is fixed between the glasses legs or the headbands. The embodiment can hang the glasses legs or the head band on the ears of the user or wear the glasses on a certain part of the head, and the optical waveguide of the light guide mechanism can be installed on the lens installation position of the glasses frame, so that the head-mounted display equipment can be conveniently worn on the head of the user, and virtual reality display or augmented reality display is provided for the user.

Optionally, the head-mounted display device includes the optical system and a buckle member disposed therein, and the buckle member is used for fixing the optical system in front of the human eye. In use, the clasp may hold the optical system in front of the human eye for viewing by the human eye.

Seventh embodiment:

fig. 3 is a schematic structural diagram of a display system according to a third embodiment of the present invention. The invention further provides a display system, which is a virtual reality and/or augmented reality display system, as shown in fig. 3, the display system includes a signal input module 4 and the head-mounted display device, and the head-mounted display device receives the signal of the signal input module 4 and transmits the signal to the head-mounted display device for processing. The signal input module 4 includes an operation controller electrically connected to the head-mounted display device, and specifically, the operation controller may be a handle or a device capable of recognizing gesture actions. Optionally, the display system is a virtual and/or augmented reality display all-in-one machine, and the head-mounted display device is provided with an independent central processor 5 for controlling the operation controller and displaying the content.

In some embodiments, as shown in fig. 3, the display system further includes a memory 6, the central processing unit 5 is electrically connected to the image source 1 and the signal input module 4, respectively, and the memory 6 is used for storing executable instructions of the central processing unit 5.

When used, the central processor 5 may be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities, and may control other components in the display system to perform desired functions.

The memory 6 may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. Volatile memory can include, for example, Random Access Memory (RAM), cache memory (or the like). The non-volatile memory may include, for example, Read Only Memory (ROM), a hard disk, flash memory, and the like. One or more computer program instructions may be stored on the computer readable storage medium and the central processor 5 may execute the program instructions to control the image source 1 to emit image light.

The signal input modules 4 may be interconnected with the central processor 5 by a bus system and/or other form of connection mechanism (not shown), and the signal input modules 4 may include, for example, a keyboard, a mouse, a joystick, a touch screen, and the like.

Of course, for simplicity, only some of the components of the display system that are relevant to the present invention are shown in fig. 3, omitting components such as buses, input/output interfaces, and the like. In addition, the display system may include any other suitable components depending on the particular application.

The basic principles of the present invention have been described above with reference to specific embodiments, but it should be noted that the advantages, effects, etc. mentioned in the present invention are only examples and are not limiting, and the advantages, effects, etc. must not be considered to be possessed by various embodiments of the present invention. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the invention is not limited to the specific details described above.

The block diagrams of devices, apparatuses, systems involved in the present invention are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".

It is further noted that in the apparatus and device of the present invention, the components may be disassembled and/or reassembled. These decompositions and/or recombinations are to be regarded as equivalents of the present invention.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.

Claims

1. A near-eye display optical device, comprising:

an image source emitting image light;

collimating prism installs on the light-emitting direction of image source, collimating prism's inside includes first plane of reflection and second plane of reflection, first plane of reflection is located on the light-emitting direction of image source, the second plane of reflection is located on the direction of reflection of first plane of reflection, first plane of reflection with the second plane of reflection constructs to be: shaping the image light entering the collimating prism into collimated image light; and

light guide mechanism installs on the light-emitting direction of second plane of reflection, light guide mechanism constructs to be: and optically coupling the collimated image into the light guide mechanism for transmission, and optically coupling the collimated image transmitted in the light guide mechanism out.

2. The near-eye display optical device of claim 1,

the reflecting surface of the first reflecting surface and the reflecting surface of the second reflecting surface are both free-form surfaces.

3. The near-eye display optical device of claim 1,

an included angle between an optical axis of the image source and a normal line at the geometric center of the first reflecting surface is any value from 0 degrees to 90 degrees, and an included angle between a normal line at the geometric center of the first reflecting surface and a normal line at the geometric center of the second reflecting surface is any value from 0 degrees to 90 degrees.

4. The near-eye display optical device of claim 1,

one side of the first reflecting surface is in contact with one side of the second reflecting surface.

5. The near-eye display optical device of claim 1, wherein the interior of the collimating prism further comprises:

a first transmissive surface disposed on an optical path between the image source and the first reflective surface.

6. The near-eye display optical device of claim 5,

the optical surface of the first transmission surface is a free-form surface.

7. The near-eye display optical device of claim 1, wherein the interior of the collimating prism further comprises:

and the second transmission surface is arranged on an optical path between the second reflection surface and the light guide mechanism.

8. The near-eye display optical device of claim 7,

the optical surface of the second transmission surface is a free-form surface.

9. The near-eye display optical device according to any one of claims 1 to 8, wherein the light guide mechanism comprises:

an optical waveguide;

a coupling-in member mounted on one side surface of the optical waveguide, the coupling-in member being located in a reflection direction of the second reflection surface, the coupling-in member being configured to: the collimated image light emitted by the collimating prism is coupled into the optical waveguide for total reflection propagation; and

a coupling-out assembly mounted on the optical waveguide, the coupling-out assembly configured to: and optically coupling the collimation image propagated by the total internal reflection of the optical waveguide out of the optical waveguide.

10. The near-eye display optical device of claim 9,

the coupling-in component is a polygonal prism and comprises a first surface and a second surface, the first surface is partially attached to one side face of the optical waveguide, and the second surface is located in the reflection direction of the second reflection face.

11. An optical system, comprising:

two near-eye display optics according to any one of claims 1 to 10, the two near-eye display optics being respectively a left-eye viewing component and a right-eye viewing component, the left-eye viewing component and the right-eye viewing component being symmetrically distributed left and right.

12. A display device applied to virtual reality equipment or augmented reality equipment is characterized by comprising:

the optical system of claim 11; and

a fixation structure to which the near-to-eye display optical device is connected.

13. The display device according to claim 12, further comprising:

the head wearing assembly is connected with the fixing structure and used for being worn on the head of a person.

14. The display device according to claim 11, further comprising:

a housing within which the optical system is housed.

15. The display device according to claim 11, further comprising:

the camera, the camera lens of camera faces the people's eye.

16. A head-mounted display device comprising the display apparatus of claim 13, wherein the head-worn component comprises an eyeglass frame comprising temples or headbands, the optical system being secured between the temples or headbands.

17. A display system, the display system being a virtual reality and/or augmented reality display system, wherein the display system comprises a signal input module and the head-mounted display device according to claim 16 or 17, the head-mounted display device receives the signal of the signal input module and transmits the signal to the head-mounted display device for processing.

18. The display system of claim 17,

the signal input module comprises an operation controller electrically connected with the head-mounted display equipment.

19. The display system of claim 17, wherein the display system is a virtual and/or augmented reality display all-in-one machine, and the head-mounted display device is provided with an independent central processor for controlling the operation controller and displaying the content.