CN107422478B - Virtual reality head-mounted device capable of being observed externally - Google Patents
Virtual reality head-mounted device capable of being observed externally Download PDFInfo
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- CN107422478B CN107422478B CN201710473834.8A CN201710473834A CN107422478B CN 107422478 B CN107422478 B CN 107422478B CN 201710473834 A CN201710473834 A CN 201710473834A CN 107422478 B CN107422478 B CN 107422478B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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Abstract
The invention provides externally observable virtual reality headset, which comprises a display screen and a shell, and further comprises: the optical lens comprises a first lens module, a second lens module, an optical transmission medium and a light transmission part. The incident end of the first lens module faces to one side of the display screen for displaying images, and the emergent end of the first lens module is connected with the incident end of the second lens module through the light transmission medium; the shell is provided with the light-passing part, and the second lens module emits light through the light-passing part. According to the invention, other people who do not wear the virtual reality headset can intuitively obtain the image seen by the eyes of the wearer on the shell of the virtual reality headset, so that the real-time sharing of the displayed image of the virtual reality headset is realized.
Description
Technical Field
The invention relates to an image processing technology, in particular to virtual reality head-mounted equipment capable of being observed externally.
Background
Virtual Reality (VR) technology has rapidly developed at home and abroad because of the experience that it provides users with the person in the scene. Virtual reality head-mounted devices (e.g., VR glasses or VR helmets) block visual connection of eyes of a user with the real world, and create a stereoscopic panoramic world with a brand new experience for the user by displaying left-eye pictures and right-eye pictures to both eyes in real time, respectively.
Current virtual reality headsets mainly include an Organic Light-Emitting Diode (OLED) screen and a housing. During use by a user of the virtual reality headset, the housing is made of opaque material, so that content can be shared to non-users only by dictation or by electronic techniques such as mounting other display devices on the host.
The prior art does not allow non-users to simultaneously observe the display image on the virtual reality headset.
Disclosure of Invention
The invention provides a virtual reality headset capable of being observed externally, which comprises a display screen and a shell, and further comprises: the optical system comprises a first lens module, a second lens module, an optical transmission medium and a light transmission part;
the incident end of the first lens module faces to one side of the display screen for displaying images, and the emergent end of the first lens module is connected with the incident end of the second lens module through the light transmission medium;
the shell is provided with the light-passing part, and the second lens module emits light through the light-passing part.
Further, the light passing portion comprises a light passing hole, and the emergent end of the second lens module emits light through the light passing hole.
Further, the light transmitting part further comprises a unidirectional light transmitting plate; the unidirectional light-transmitting plate is arranged in the light-transmitting hole and is used for only allowing light transmitted outwards from the inside of the shell to transmit through the light-transmitting hole.
Further, the unidirectional light transmitting plate comprises a transparent glass plate coated with a single reflective film.
Further, the device also comprises a shading cylinder; one end of the shading cylinder is connected with the second lens module, and the other end of the shading cylinder is connected with the light transmission part.
Further, the optical transmission medium comprises an optical fiber.
Further, the device also comprises a first light transfer tube and a first refractive index matching liquid;
one end of the first optical transfer tube is connected with the first lens module, and the other end of the first optical transfer tube is connected with the optical transmission medium;
the first light transfer tube is filled with the first refractive index matching liquid.
Further, the refractive index of the first refractive index matching liquid is the same as that of the first lens module.
Further, the device also comprises a second light transfer tube and a second refractive index matching liquid;
one end of the second optical transfer tube is connected with the second lens module, and the other end of the second optical transfer tube is connected with the optical transmission medium;
and the second light transfer tube is filled with the second refractive index matching liquid.
Further, the refractive index of the second refractive index matching liquid is the same as that of the second lens module.
According to the invention, the incident end of the first lens module faces one side of the display screen for displaying the image, the emergent end of the first lens module is connected with the incident end of the second lens module through the optical transmission medium, the light passing part is arranged on the shell, and the second lens module emits light through the light passing part, so that other people who do not wear the virtual reality headset can intuitively obtain the image seen by the eyes of the wearer on the shell of the virtual reality headset, and real-time sharing of the displayed image of the virtual reality headset is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a diagram of an externally observable virtual reality headset provided by the present invention;
FIG. 2 is a diagram of another externally viewable virtual reality headset provided by the present invention;
FIG. 3 is a schematic illustration of yet another externally viewable virtual reality headset provided by the present invention;
fig. 4 is a schematic diagram of a connection structure between an optical transmission medium and a first lens module according to the present invention.
The LED display comprises a 1-OLED screen, a 2-shell, a 3-first lens module, a 4-second lens module, a 5-light transmission medium, a 6-light passing part, a 61-light passing hole, a 62-unidirectional light transmission plate, a 7-shading cylinder and an 8-first light transfer tube.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Most of the prior art virtual reality head-mounted devices mainly comprise two lenses and an Organic Light-Emitting Diode (OLED) screen arranged behind the lenses, wherein the OLED screen 1 needs to be connected with a host through a high-definition multimedia interface (High Definition Multimedia Interface, HDMI) to obtain a display image. Two lenses in the prior art virtual reality headset are used for adjusting the incidence angle of light rays emitted by the OLED screen 1 which is closer to the lens and then entering eyes of a wearer, and the virtual reality headset realizes immersive 3D picture feel through cooperation of the two lenses and the OLED screen 1. The OLED screen 1 is full of the wearer's front of the eye while wearing the virtual reality headset, and cannot intuitively share the image in front of the eye to a third person who is not wearing the headset.
When the virtual reality headset is used for entertainment or learning, the non-wearer cannot see the image displayed by the virtual reality headset, and cannot interact or guide the image displayed by the wearer. For example, when a skill is contacted by using the virtual reality headset, the skill can only be improved through software evaluation or self insight, and other people cannot conduct real-time guidance on the behaviors of the wearer of the virtual reality headset.
Fig. 1 is a view of an externally observable virtual reality headset provided by the present invention. The virtual reality headset as shown in fig. 1 comprises a display screen and a housing 2, further comprising: a first lens module 3, a second lens module 4, an optical transmission medium 5 and a light transmitting portion 6.
Specifically, the incident end of the first lens module 3 faces to one side of the display screen where the image is displayed, and the emergent end is connected with the incident end of the second lens module 4 through the light transmission medium 5;
the housing 2 is provided with the light-transmitting portion 6, and the second lens module 4 emits light through the light-transmitting portion 6.
According to the embodiment, real-time external sharing of the display image of the virtual reality headset is realized through the pure optical structure. The first lens module 3 is used for capturing an image on the OLED screen 1, the second lens module 4 is used for projecting an image, and the same or different lens types can be selected according to different functions and installation limitations of the lens module, and the invention is not limited thereto. Alternatively, the first lens module 3 and the second lens module 4 may be made of thin and light fresnel lenses, thereby reducing the weight of the first lens module 3 and the second lens module 4 loaded on the virtual reality headset while improving the condensing efficiency. The first lens module 3 and the second lens module 4 may be one lens, or may be a combination of two or more lenses, which is not limited thereto. The first lens module 3 and the second lens module 4 may be composed of lenses having the same curvature on both sides, or may be composed of lenses having different curvatures on both sides, and the present invention is not limited thereto.
Optionally, the first lens in this embodiment is disposed between two lenses that cooperate with the OLED screen 1, i.e. at a position corresponding to the bridge of the nose of the wearer. Wherein the first lens acquires only a left eye image or a right eye image.
In the embodiment shown in fig. 1, the light transmission medium 5 is used to transmit the light beam emitted from the first lens to the incident end of the second lens, and the medium for implementing such light transmission may have various manners and structures, and the shape of the medium is not limited to the linear structure shown in fig. 1, but may also be a prism with an irregular shape according to the refraction requirement of light, and the invention is not limited thereto.
The light-transmitting portion 6 shown in fig. 1 is a member for transmitting light, and the case 2 is provided with the light-transmitting portion 6, and the light-transmitting portion 6 may be attached to the case 2 or the light-transmitting portion 6 may be integrally formed with the case 2.
The housing 2 is a housing for being arranged outside the OLED screen 1, and the actual product may also have a multi-layer protective shell, or may also have other structures such as a decorative shell, a decorative cover, or a supporting frame, so the housing 2 of the present invention should not be limited to the outermost protective shell.
Wherein, as an alternative implementation manner of the light-transmitting portion 6, the peripheral surface of the housing 2 is made of a material which only allows unidirectional light transmission from inside to outside, the light-transmitting portion 6 is integrally formed on the peripheral surface of the housing 2, and then the second lens module 4 can emit light through any position of the peripheral surface of the housing 2.
Through the structure provided by the invention, other people who do not wear the virtual reality headset can intuitively obtain the image seen by the eyes of the wearer on the virtual reality headset shell 2, so that the real-time sharing of the display image of the virtual reality headset is realized.
As another implementation manner of the light-transmitting portion 6, in the embodiment shown in fig. 1, the light-transmitting portion 6 includes a light-transmitting hole 61, and the light exits from the exit end of the second lens module 4 through the light-transmitting hole 61.
The two sides of the light-passing hole 61 can be connected with the second lens module 4 by arranging a hole edge, so that the second lens module 4 is aligned with the light-passing hole 61, and the maximum light-emitting range is realized. Further, the light-transmitting hole 61 may be further provided with a rubber ring for mounting the second lens module 4, so that the second lens module is convenient to detach while being shockproof.
The position of the light-passing hole 61 corresponds to the second lens module 4, and the second lens module 4 receives the light beam transmitted from the light transmission medium 5, so that the light beam can be guided to any position according to the requirement, and can be emitted from the front or the side of the housing 2, and should not be limited to the front position of the housing 2 shown in fig. 1. The second lens module 4 may be fixed by the light-transmitting hole 61, or may be fixed by a bracket of the OLED screen 1. Optionally, the second lens is fixed by using the light-passing hole 61 as a mounting hole, or is concentrically mounted and fixed with the light-passing hole 61, so as to obtain maximum aperture exit. The light passing portion 6 is implemented in the light passing hole 61 in fig. 1, and has low processing difficulty.
Fig. 2 is a schematic diagram of another externally observable virtual reality headset provided by the present invention. As shown in fig. 2, the light transmitting portion 6 further includes a unidirectional light transmitting plate 62; the unidirectional light-transmitting plate 62 is installed in the light-transmitting hole 61, and the unidirectional light-transmitting plate 62 is used for allowing only the light transmitted from the inside of the housing 2 to pass through the light-transmitting hole 61.
The unidirectional light-transmitting plate 62 only allows light to be transmitted outwards from the inside of the housing 2, prohibits light outside the housing 2 from entering the inside, maintains the optical environment inside the virtual reality headset, and reduces the influence of an external light source on the display effect of the OLED screen 1.
The unidirectional light-transmitting plate 62 in the embodiment shown in fig. 2 may be made of a material or may be made of a structure to achieve the unidirectional light-transmitting function.
As a way of realizing the one-way projection function by the structure: the unidirectional light transmitting sheet 62 comprises a transparent glass sheet coated with a single reflective film. Unidirectional transmission can be achieved simply by coating the single reflective film. The single reflective film is further optionally a surface low reflection treated (Surface Low Reflection, SLR) nanofilm. The SLR nano film is realized by attaching a nano film material after special optical treatment on the surface of transparent glass, so as to achieve the purposes of reducing reflectivity and enhancing contrast ratio, thereby achieving better light transmission effect. The SLR nano film in the embodiment is widely applied to the field of manufacturing of display screens of mobile phones and flat panels at present, and the display effect is improved through anti-reflection.
In the example of the structure shown in fig. 1-2, an OLED screen 1 light shield may also be provided within the housing 2, enclosing the light path between the OLED screen 1 and the lens. The second lens module 4 emits light in the accommodating space in the housing 2, and although the light emitting direction is opposite to that of the OLED screen 1, stray light is generated, and the light blocking cover of the OLED screen 1 is provided to block part of the stray light generated by the second lens module 4 from entering the two lenses corresponding to eyes of the wearer, so that the resolution of images in the externally observable virtual reality headset is improved.
Fig. 3 is a schematic diagram of another externally observable virtual reality headset provided by the present invention.
In the embodiment shown in fig. 3, a light shielding cylinder 7 is further included; one end of the shading cylinder 7 is connected with the second lens module 4, and the other end is connected with the light transmitting part 6.
The light shielding tube 7 shown in fig. 3 may be selected to be a horn-like tube, but the present invention is not limited thereto. The light shielding tube 7 may be in a parabolic shape, the second lens may be provided at a small end, and the opening may be connected to the light transmitting portion 6. The light shielding barrel 7 may be cylindrical with two ends of the same size, one end of the light shielding barrel is connected with the second lens module 4, and the other end of the light shielding barrel is connected with the light transmitting part 6.
As an implementation of the light shielding cylinder 7, the light shielding cylinder 7 may be made of a light-tight plastic with a relatively light weight, but may not be made of a light-tight metal or a flexible material, and the present invention is not limited thereto.
As a further embodiment of the shade cartridge 7, the shade effect can also be achieved by other additional structures together with the cartridge body for support. The light shielding cylinder 7 can be made by attaching a light shielding film, a light absorbing film or a light reflecting film on the inner wall or the outer wall. Because the attached film is convenient to operate and easy to update and maintain, the shading effect can be realized by replacing a new film after aging and breakage, and the whole shading barrel 7 is not required to be replaced. The choice of material for the light shielding tube 7 may be more biased against durability, heat resistance, structural stability, etc., than the material having light shielding properties. In the embodiment where the shading effect is achieved by adding other structures together with the shading cylinder 7, the shading cylinder 7 can also be achieved by sputtering a plating layer on the inner wall or the outer wall, and the sputtering plating layer has more stable and durable characteristics relative to the mode of attaching a film, but the shading cylinder 7 needs to be sputtered again or replaced entirely once aged or damaged.
The shading barrel 7 covers the areas of the second lens module 4 and the light transmitting part 6, the second lens module 4 is mutually isolated from the OLED screen 1 in the virtual reality headset and the optical system of human eyes, and the influence of the second lens module 4 on the display effect of the OLED screen 1 is reduced.
In the embodiment shown in any of fig. 1-3, one implementation of the optical transmission medium 5 comprises an optical fiber. In the present embodiment, the optical fiber as the light transmission medium 5 includes, but is not limited to, any one of a quartz-based optical fiber, a multicomponent glass optical fiber, a plastic clad quartz-core optical fiber, a full plastic optical fiber, and a fluoride optical fiber.
Fig. 4 is a schematic diagram of a connection structure between the optical transmission medium 5 and the first lens module 3 according to the present invention.
The connection between the optical transmission medium 5 and the first lens module 3 includes, but is not limited to, the embodiment shown in fig. 4.
The embodiment shown in fig. 4 further comprises a first light transfer tube 8 and a first index matching fluid;
one end of the first light switching tube 8 is connected with the first lens module 3, and the other end is connected with the light transmission medium 5;
the first light transfer tube 8 is filled with the first refractive index matching liquid.
The embodiment shown in fig. 4 illustrates the optical transmission medium 5 as a set of optical fibers, but the invention is not limited thereto. If the optical transmission medium 5 is implemented in other structures, the shape of the first optical transfer tube 8 is adaptively changed.
Optionally, the first optical transfer tube 8 is made of a light-transmitting material with the same refractive index as that of the first lens module 3, the first optical transfer tube 8 is filled with the first refractive index matching liquid, two ends of the first optical transfer tube 8 are connected with the first lens module 3 and the optical fiber in an adhesive manner through optical cement, so that no-gap transmission of light beams is realized, and the possibility of light attenuation caused by refraction or reflection of light generated by an air gap is reduced.
In the embodiment shown in fig. 4, the first optical transfer tube 8 and the first refractive index matching fluid form an optical transmission channel between the optical transmission medium 5 and the first lens, so that light reflection is reduced, light loss rate is reduced, and optical transmission efficiency between the optical transmission medium 5 and the first lens is improved. During light propagation, materials that are not index matched, such as air, can cause a significant amount of light to be reflected back at the end face.
In this embodiment, the optical beam is obtained at the optical fiber connection end face through the first refractive index matching liquid filled in the first optical switching tube 8, so as to reduce the reflection loss of light. The first index matching fluid may allow light to enter the end face at a full polarization angle, thereby reducing the reflected echo loss to 0. Because the optical structure has higher alignment requirement, ensuring the stability of the optical path connection structure is one of the important criteria for the quality of optical products. According to the embodiment, the first light transfer tube 8 is used for realizing the fixed connection between the optical fiber and the first lens module 3, so that the stability and shock resistance of light path connection can be enhanced.
Optionally, the mounting components of the first lens module 3, the optical transmission medium 5 and the second lens module 4 may use rubber rings, shock-absorbing pads and other shock-absorbing components to increase the mounting stability and provide sufficient buffering.
Optionally, the refractive index of the first refractive index matching fluid is the same as the refractive index of the first lens module 3.
The connection between the optical transmission medium 5 and the second lens module 4 includes, but is not limited to, the following ways:
as an embodiment, the externally observable virtual reality headset further comprises a second light transfer tube and a second index matching fluid;
one end of the second optical transfer tube is connected with the second lens module 4, and the other end of the second optical transfer tube is connected with the optical transmission medium 5;
and the second light transfer tube is filled with the second refractive index matching liquid.
Optionally, the refractive index of the second refractive index matching fluid is the same as the refractive index of the second lens module 4.
For a detailed description of the solution provided by the present invention, the following is an embodiment of the present invention. Wherein the optical transmission medium 5 has the same connection mode with the first lens module 3 and the second lens module 4.
In this embodiment, the first lens module 3 is a lens array formed by combining a plurality of lenses. The lens side of the first lens module 3, which directly receives the light beam emitted by the OLED screen 1, is used as an incident end, and the lens side connected to the light transmission medium 5 is used as an output end.
The lenses constituting the first lens module 3 are all mounted by a light-tight lens mounting cylinder, and the lens mounting cylinder is fixedly clamped with each lens by a rubber ring for edging. The lens mounting cylinder is further formed by a plurality of sub-mounting cylinders corresponding to the lenses in a threaded connection mode, and each sub-mounting cylinder corresponds to one lens. The first lens module 3 defines a mounting position between the respective lenses by the sub-mount cylinder.
The edge of the lens side serving as the output end is sealed with the port of the first optical transfer tube 8 through optical adhesive, and the first optical transfer tube 8 is filled with a first refractive index matching liquid. The other port of the first optical transfer tube 8 is hermetically connected to the optical transmission medium 5.
The optical transmission medium 5 in this embodiment is an optical cable composed of multiple groups of optical fibers, the outer diameter of the core layer of the optical cable is identical to the inner diameter of the first optical transfer tube 8, and the insulating layer is connected with the outer wall of the first optical transfer tube 8 in a sealing manner. The port of the optical cable is a plane, so that the light beam transmitted by the first light-light switching tube can be normally incident into the optical fiber. The optical cable is fixedly mounted with the housing 2 by a fixing member, so that the possibility of the interface disconnection caused by movement is reduced.
The other end of the optical cable is connected with the incident end of the second lens module 4. The second lens module 4 is also a lens array composed of a plurality of lens combinations. The lens side of the second lens module 4 connected with the optical cable is used as an incident end, and the lens side of the light beam emitted towards the outside of the housing 2 is used as an emitting end. The lenses constituting the second lens module 4 are also fixedly mounted by one lens mounting cylinder, and the lens mounting cylinder of the second lens module 4 is also constituted by a plurality of sub-mounting cylinders which are screw-coupled. The port of the lens mounting cylinder of the second lens module 4, which is close to the incident end, is connected with the optical cable through a second optical transfer tube, and the port, which is close to the emergent end, is connected with the light transmitting part 6 through a shading cylinder 7 to realize light. Wherein, the optical axes of the second lens module 4, the shading cylinder 7 and the light transmitting part 6 are overlapped.
The whole shading barrel 7 is in a round table shape, the small opening end is connected with the emergent end of the second lens module 4, and the large opening end is connected with the light transmitting part 6. The connection between the small opening end and the emergent end of the second lens module 4 is light-tight connection, and the light-tight connection is used for blocking light in the shading barrel 7 from overflowing from the connection position. A black light absorption film is attached to the inner wall of the light shielding barrel 7, so that reflection of stray light in the light shielding barrel 7 is reduced. The large opening end is connected to the light transmitting portion 6 in a light-tight manner.
The light transmitting portion 6 is a light transmitting hole 61 with a glass having a single light transmitting function, and blocks the light outside the housing 2 from entering while the second lens module 4 emits light. The light passing hole 61 is provided with a shield mounting flange at one side of the outside of the housing 2, the shield mounting flange being screw-coupled with the shield. The protective cover is used for mounting glass protection with a single light transmission function during storage.
The partial light beam emitted by the OLED screen 1 in the virtual reality headset device capable of being observed externally enters the first lens module 3, is refracted and condensed through the first lens module 3, enters one end of the optical cable through the first light switching tube 8 at an angle close to normal incidence after being regulated, and enters the second lens module 4 through the second light switching tube from the other end of the optical cable. The light beam is refracted and diverged by the second lens module 4, then is emitted from the light transmitting part 6, and enters the eyes of an external observer, so that the display image of the OLED screen 1 in the virtual reality headset capable of being observed externally can be observed in real time.
The invention uses pure optical devices and principles to realize the sharing of the display image of the OLED screen 1 in the virtual reality headset, and does not need to consume extra electric quantity. The principle is simple and the main structures such as lenses, optical fibers and the like have long service lives after the structures are cured.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. The utility model provides a but virtual reality head-mounted device of external observation, includes display screen and shell, its characterized in that still includes: the optical system comprises a first lens module, a second lens module, an optical transmission medium and a light transmission part;
the incident end of the first lens module faces to one side of the display screen for displaying images, and the emergent end of the first lens module is connected with the incident end of the second lens module through the light transmission medium;
the shell is provided with the light-transmitting part, and the second lens module emits light through the light-transmitting part;
the light transmission part comprises a light transmission hole, and the emergent end of the second lens module emits light through the light transmission hole so as to realize projection of an image;
the optical transmission medium comprises an optical fiber;
the first lens module is arranged between two lenses matched with the display screen, and the first lens module is arranged at a position corresponding to the bridge of the nose of a wearer;
the externally viewable virtual reality headset is configured to allow both the wearer and non-wearer to simultaneously view images displayed by the display screen.
2. The virtual reality headset of claim 1, wherein the light transmitting portion further comprises a unidirectional light transmitting plate; the unidirectional light-transmitting plate is arranged in the light-transmitting hole and is used for only allowing light transmitted outwards from the inside of the shell to transmit through the light-transmitting hole.
3. The virtual reality headset of claim 2, wherein the unidirectional light transmitting plate comprises a transparent glass plate coated with a single reflective film.
4. The virtual reality headset of any one of claims 1-3, further comprising a shade cartridge; one end of the shading cylinder is connected with the second lens module, and the other end of the shading cylinder is connected with the light transmission part.
5. The virtual reality headset of claim 1, further comprising a first light transfer tube and a first index matching fluid;
one end of the first optical transfer tube is connected with the first lens module, and the other end of the first optical transfer tube is connected with the optical transmission medium;
the first light transfer tube is filled with the first refractive index matching liquid.
6. The virtual reality headset of claim 5, wherein a refractive index of the first index matching fluid is the same as a refractive index of the first lens module.
7. The virtual reality headset of claim 1, further comprising a second light transfer tube and a second index matching fluid;
one end of the second optical transfer tube is connected with the second lens module, and the other end of the second optical transfer tube is connected with the optical transmission medium;
and the second light transfer tube is filled with the second refractive index matching liquid.
8. The virtual reality headset of claim 7, wherein a refractive index of the second index matching fluid is the same as a refractive index of the second lens module.
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| CN201710473834.8A CN107422478B (en) | 2017-06-21 | 2017-06-21 | Virtual reality head-mounted device capable of being observed externally |
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| CN201710473834.8A CN107422478B (en) | 2017-06-21 | 2017-06-21 | Virtual reality head-mounted device capable of being observed externally |
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| CN111343440A (en) * | 2018-12-18 | 2020-06-26 | 施轩杰 | Common image source display projection scheme |
| CN111025644A (en) * | 2019-12-24 | 2020-04-17 | 塔普翊海（上海）智能科技有限公司 | Projection screen device of double-free-form-surface reflective AR glasses |
| CN111965823A (en) * | 2020-08-22 | 2020-11-20 | 江苏科群通讯建设有限公司 | Virtual reality glasses, terminal equipment and system |
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| US4465347A (en) * | 1982-11-15 | 1984-08-14 | The United States Of America As Represented By The Secretary Of The Air Force | Helmet mounted telescope |
| BR112015004958A8 (en) * | 2012-09-12 | 2019-08-13 | Sony Corp | image display device and method, and computer readable recording media. |
| CN204832686U (en) * | 2015-06-10 | 2015-12-02 | 北京兴科迪科技有限公司 | Use fiber optic conductor's laser new line display |
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