WO2017143726A1

WO2017143726A1 - System for presenting virtual reality contents and head-mounted display

Info

Publication number: WO2017143726A1
Application number: PCT/CN2016/092325
Authority: WO
Inventors: 翁文英
Original assignee: 翁文英
Priority date: 2016-02-25
Filing date: 2016-07-29
Publication date: 2017-08-31
Also published as: CN106154552A

Abstract

A system (100) for presenting virtual reality contents, the system comprising: a liquid crystal display (110), for presenting a virtual reality image outputted by an image generation terminal; a light valve group (120, 200, 310, 400, 500), comprising a group of light valves capable of independently controlling the open or close states, and used for selectively shielding the passage of image light through the liquid crystal display (110); electronic circuits (130, 300, 410, 510), connected with the light valve group (120, 200, 310, 400, 500), and used for controlling each light valve in the light valve group (120, 200, 310, 400, 500) to open or close according to a control logic; and an optical lens (140), used for magnifying the image which has passed through the light valve group (120, 200, 310, 400, 500), such that a user can see the magnified image through the optical lens (140). The system (100) is capable of presenting a virtual reality image for the user by means of a liquid crystal display (110), and can prevent image from blurring when viewed by a user.

Description

System and head-mounted display device for displaying virtual reality content

The present application claims priority to Chinese Patent Application No. Serial No. No. No. No. No. No. No. No. No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No

Technical field

The present invention relates to the field of computer networks, and in particular to a system for displaying virtual reality content and a head mounted display device.

Background technique

Virtual Reality (VR) is a high-tech that has emerged in recent years. It can use computer simulation to generate a virtual world in three-dimensional space, providing users with simulations of visual, auditory, tactile and other senses, allowing users to be as close to them. The environment generally observes things in three dimensions in a timely manner. Currently, display devices that can be used in VR systems and can realize virtual and real fusion are mainly divided into three categories: head-mounted displays, hand-held displays, and fixed displays.

Putting the display in front of the eye, the original small screen can create a large image. This type of display is called a "head-mounted display" (HMD). Its function principle is to display the image source or image information close to the human eye, and to play close to the human eye, reducing the size and weight of the image source and product, so it can have both confidentiality and flexibility. The head-mounted display is not only used as a simple display, but also has a larger feature that is suitable for use as a see-through display, which combines virtual and real scenes, thereby greatly expanding the function of the display, and thus has received great attention.

For the development source of the head-mounted display, that is, the display screen, the most suitable material at present is a liquid crystal display (such as TFT), which has the advantages of light weight, sufficient supply chain, low cost, high resolution, etc., but the liquid crystal display responds The speed is slow, so the problem that the moving image or the device is prone to blur during the movement may cause the user to have a dizziness and affect the user experience.

Summary of the invention

The technical problem to be solved by the present invention is to provide a system for displaying virtual reality content, which can display a virtual reality image for a user through a liquid crystal display screen, and avoids image blurring phenomenon existing when the user views.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a system for presenting virtual reality content, the system comprising: a liquid crystal display for displaying a virtual reality image output by the image generation terminal; and a light valve group including a set of light valves that can independently control an open or closed state for selectively shielding the passage of image light on the liquid crystal display; an electronic circuit connecting the light valve sets for controlling the light valves in accordance with control logic Each of the light valves of the group is opened or closed; an optical lens is used to magnify the image after passing through the light valve group so that the user's eyes can see the enlarged image through the optical lens.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a head-mounted display device, the device comprising: a strap and a shell, and the strap can be bound to the user's head by the strap; A liquid crystal display integrated in the housing for displaying a video image output by the image generating terminal; a light valve group integrated in the housing, including a set of light valves that can independently control an open or closed state for selective shielding Passing through the image light on the liquid crystal display; an electronic circuit integrated in the outer casing, connecting the light valve group for controlling the light valves of the light valve group to be opened or closed according to the control logic; integrated in the outer casing An optical lens for magnifying an image after passing through the optical valve group so that a user's eye can see the enlarged image through the optical lens.

Different from the prior art, the system for displaying virtual reality content of the present invention comprises: a liquid crystal display for displaying a virtual reality image output by the image generation terminal; and a light valve group including a set of light capable of independently controlling an open or closed state. a valve for selectively shielding the passage of image light on the liquid crystal display; an electronic circuit connecting the light valve group for controlling each light valve of the light valve group to be turned on or off according to a control logic; a lens for magnifying an image after passing through the optical valve group, so that a user's eye can see the enlarged image through the optical lens; thereby displaying a virtual reality image for the user through the liquid crystal display, and avoiding the user Image blurring during viewing.

DRAWINGS

1 is a schematic structural diagram of a first embodiment of a system for displaying virtual reality content according to the present invention;

2 is a schematic structural view of an embodiment of a light valve in the corresponding embodiment of FIG. 1 according to the present invention;

3 is a schematic structural view of an embodiment of an electronic circuit in the corresponding embodiment of FIG. 1 according to the present invention;

4 is a schematic diagram of an embodiment of an electronic circuit control light valve group in the corresponding embodiment of FIG. 1 of the present invention;

5 is a schematic view of another embodiment of an electronic circuit control light valve group in the corresponding embodiment of FIG. 1 of the present invention;

Fig. 6 is a schematic structural view of a first embodiment of a head mounted display device of the present invention.

detailed description

The technical solution of the present invention will be further described in detail below in conjunction with specific embodiments. It is apparent that the described embodiments are only a part of the embodiments of the invention, and not all of them. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

Referring to FIG. 1, FIG. 1 is a schematic structural diagram of a first embodiment of a system for displaying virtual reality content provided by the present invention.

The system 100 for presenting virtual reality content includes a liquid crystal display 110, a light valve assembly 120, an electronic circuit 130, and an optical lens 140.

The liquid crystal display 110 is configured to display a virtual reality image output by the image generation terminal.

Specifically, the image generation terminal may be a device such as a computer, a mobile phone, or a game console. Specifically, the liquid crystal display is a Thin Film Transistor (TFT) display, and the display may be an independent display or a liquid crystal display on the mobile phone.

Specifically, when the liquid crystal display is an optical see-through display, the virtual reality image output by the image generation terminal is a virtual image generated by the image generation terminal according to the surrounding real environment; when the liquid crystal display is a video perspective In the display screen, the virtual reality image output by the image generation terminal is a virtual image in which the image transmitted from the camera and the image generated by the image generation terminal are combined.

Specifically, the liquid crystal display has a wired interface to connect with the image generation terminal and receive an image signal output by the image generation terminal; or has a wireless interface capable of receiving an image signal output by the image generation terminal.

The light valve group 120 includes a set of light valves that can independently control an open or closed state for selectively shielding the passage of image light on the liquid crystal display.

Specifically, the set of light valves are light valves arranged side by side in space, and they can be combined Form a rectangle, square, ellipse or circle, or other irregular shapes. Moreover, there is a certain gap between the respective light valves. Moreover, in order to ensure image quality, try to make the light valve close to the lens side.

Alternatively, FIG. 2 is an example of a light valve in the present embodiment, in which the light valve group 200 includes a left eye light valve group 210 and a right eye light valve group 220, and an image of the left eye light valve group 210 is used for The left eye is shown to the user through which the image of the right eye light valve set 220 is presented to the right eye of the user. In this example, the image displayed on the liquid crystal display is a stereoscopic image of 3D, and the images seen by the user through the left eye and the right eye are different.

The electronic circuit 130 is connected to the optical valve group 120 for controlling the opening and closing of the respective light valves of the optical valve group according to the control logic.

In particular, the electronic circuit has an interface so that control signals can be transmitted to the light valve group.

3 is an example of an electronic circuit in the embodiment, in which the light circuit controller 301 is included in the electronic circuit 300, and has an interface and a light valve group 310 directly connected; optionally, the electronic circuit 300 further includes a memory. 302, configured to store preset control logic, wherein the multiple light valve controller 301 is configured to control each light valve of the light valve group 310 according to a preset control logic on the memory 302. Turning on or off; optionally, the electronic circuit 300 includes a processor 303, configured to generate control logic in real time according to a current output state (eg, brightness, saturation, synchronization signal, etc.) of the display screen. The multi-way light valve controller 301 is configured to control each light valve of the light valve group 310 to be turned on or off according to control logic generated by the processor 303 in real time; optionally, the electronic circuit 300 includes processing And a sensor 304, such as an inertial sensor, a gyroscope or an electronic compass for sensing the current state of the device, the processor 303 for The current state of the device generates control logic in real time. At this time, the multiple light valve controller 301 is configured to control the light valves of the light valve group 310 to be turned on or off according to the control logic generated by the processor 303 in real time. .

In the example of the first control logic of the present embodiment, the control logic used by the electronic circuit to control the optical valve group is such that for each of the light valves of the optical valve group, the opening and closing operations are sequentially performed in a spatial arrangement order. 4 is a schematic illustration of the first control logic. The optical valve assembly 400 includes N light valves, numbered 1 to N, respectively. The electronic circuit 410 opens the light valve numbered 1 according to the timing, for a period of time. After the time is closed, then open the light valve numbered 2, and then turn it off after a period of time until the light valve numbered N is turned off.

In the example of the second control logic of the embodiment, the control logic used by the electronic circuit to control the optical valve group is: the light valve component is divided into a plurality of sub-groups, and each sub-group includes at least one light valve. Each subgroup performs an opening and closing operation in sequence. Figure 5 is a schematic illustration of the second control logic, the light valve assembly 500 includes N light valves, the light valves are numbered 1 to N, respectively, and are divided into K subgroups, the number of the light valve subgroup 1 to K respectively; in the example corresponding to Fig. 5, the continuous light valves are arranged in a subgroup, and any one of the N light valves can be grouped into a subgroup in the actual environment; the electronic circuit 510 according to the timing, open all the light valves in the light valve subgroup of number 1, turn off after a period of time, and then turn on all the light valves in the light valve subgroup of number 2, and then turn off after a period of time until the opening number is k. The light valve is closed afterwards.

The optical lens 140 is configured to magnify an image after passing through the optical valve group 120 so that a user's eye can see the enlarged image through the optical lens.

Optionally, when the light valve group 120 includes a left eye light valve group and a right eye light valve group, the optical lens may include a left eye optical lens and a right eye optical lens for displaying images for the left eye and the right eye, respectively. .

Alternatively, the optical lens may also be a series of superimposed lenses to provide the best effect for displaying images.

According to the control of the control logic, the light valve group only opens part of the light valve, so that only part of the image can pass through the light valve, and is amplified by the optical lens and transmitted to the user for viewing. By designing reasonable control logic, it is possible to avoid blurry images due to device movement or moving images.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of a first embodiment of a head mounted display device according to the present invention.

The head mounted display device 600 includes: a strap 610, a housing 620, a liquid crystal display 630, and a light valve Door set 640, electronic circuit 650, optical lens 660. Optionally, the device 600 has a separate battery for providing the power required by the device.

Wherein, the outer casing 620 can be bound to the user's head by the strap 610.

The liquid crystal display 630 is integrated in the housing 620 for presenting a video image output by the image generation terminal. Optionally, the device 600 further has a separate processor for processing the video image displayed on the liquid crystal display. The liquid crystal display 630 can be a stand-alone display or a liquid crystal display on the mobile phone. Specifically, the image generation terminal may be a device such as a computer, a mobile phone, or a game console.

Specifically, the liquid crystal display is a Thin Film Transistor (TFT) display. Specifically, the video image output by the image generating terminal is a virtual image generated by the image generating terminal according to the surrounding real environment, or a virtual image obtained by combining the image transmitted by the camera and the image generated by the image generating terminal.

The light valve assembly 640 is integrated in the housing 620 and includes a set of light valves that can independently control the open or closed state for selectively shielding the passage of image light on the liquid crystal display.

The electronic circuit 650 is integrated in the housing 620, and the optical valve group 640 is connected through a wired interface for controlling the respective light valves of the optical valve group 640 to be turned on or off in accordance with control logic.

An optical lens 660 is integrated in the housing for amplifying the image after passing through the light valve assembly 640 so that the user's eye can see the magnified image through the optical lens.

Optionally, the light valve group 640 includes a left eye light valve group and a right eye light valve group, the image of the left eye light valve group is used for displaying to the left eye of the user, and the image of the right eye light valve group is used for Show the right eye to the user. At this time, the image displayed on the liquid crystal display is a stereoscopic image of 3D, and the image seen by the user through the left eye and the right eye is different.

Specifically, the light valves in the light valve group 640 are light valves arranged side by side in space, and form a rectangular, square, elliptical, circular or other irregular shape as a whole.

Specifically, the electronic circuit 650 controls the respective light valves of the light valve group to be opened or closed according to the control logic: the electronic circuit controls the respective light valves of the light valve group to sequentially perform the opening and closing operations according to the spatial arrangement order, Alternatively, the light valve component is a plurality of subgroups, each subgroup being at least A light valve is included, the electronic circuit controlling the respective light valve sub-sets to perform an opening and closing operation in sequence. Wherein, the light valve component is divided into a plurality of subgroups by arranging spatially continuous light valves in a subgroup or arranging any plurality of light valves in the optical valve group into a subgroup.

Different from the prior art, the head-mounted display device of the present invention comprises: a strap and a casing, by which the casing can be bound to the user's head; a liquid crystal display integrated in the casing is used for Displaying a video image output by the image generation terminal; a light valve group integrated in the outer casing, including a set of light valves independently controllable in an open or closed state for selectively shielding the passage of image light on the liquid crystal display; An electronic circuit in the housing, the light valve group being connected for controlling opening or closing of each light valve of the light valve group according to a control logic; an optical lens integrated in the housing for passing the light valve The image after the group is enlarged so that the user's eyes can see the enlarged image through the optical lens; thus, the virtual reality image can be displayed to the user through the liquid crystal display, and the image blurring phenomenon existing when the user views is avoided.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A system for presenting virtual reality content, comprising:

a liquid crystal display for displaying a virtual reality image output by the image generation terminal;

a light valve group comprising a set of light valves that can independently control an open or closed state for selectively shielding the passage of image light on the liquid crystal display;

An electronic circuit connecting the light valve group for controlling opening or closing of each light valve of the light valve group according to a control logic;

An optical lens for magnifying an image after passing through the optical valve group so that a user's eye can see the enlarged image through the optical lens.
A system for presenting virtual reality content according to claim 1 wherein:

The light valve group includes a left eye light valve group and a right eye light valve group, an image of the left eye light valve group is used for display to a left eye of a user, and an image of the right eye light valve group is used for displaying to a right of the user eye.
A system for presenting virtual reality content according to claim 1 wherein:

The set of light valves are light valves arranged side by side in space and may be formed into a rectangle, a square, an ellipse or a circle.
A system for presenting virtual reality content according to claim 1 wherein:

The electronic circuit includes a multi-channel light valve controller and a memory;

The memory is configured to store preset control logic;

The multi-channel light valve controller is configured to directly connect the light valve group, and control each light valve of the light valve group to be turned on or off according to the preset control logic.
A system for presenting virtual reality content according to claim 1 wherein:

The electronic circuit includes a multi-channel light valve controller and a processor;

The processor is configured to generate control logic in real time according to a current output state of the display screen;

The multi-channel light valve controller is configured to directly connect the light valve group, and control each light valve of the light valve group to be turned on or off according to the real-time generated control logic.
A system for presenting virtual reality content according to claim 1 wherein:

The electronic circuit includes a multi-channel light valve controller, a processor, and a sensor;

The sensor is configured to sense a current state of the device;

The processor is configured to generate control logic in real time according to a current state of the device;

The multi-channel light valve controller is configured to directly connect the light valve group, and according to the real-time The resulting control logic controls the individual light valves of the light valve group to open or close.
The system for presenting virtual reality content according to any one of claims 1-6, wherein the control logic is specifically: performing, for each light valve of the optical valve group, sequentially performing an opening and closing operation according to a spatial arrangement order. ;

Or the light valve component is divided into a plurality of sub-groups, each sub-group comprising at least one light valve, and the opening and closing operations are sequentially performed for the respective sub-groups.
A head mounted display device, comprising:

a strap and an outer casing, the outer casing being bound to the user's head by the strap;

a liquid crystal display integrated in the casing for displaying a video image output by the image generating terminal;

A light valve assembly integrated in the housing, comprising a set of light valves independently controllable in an open or closed state for selectively shielding the passage of image light on the liquid crystal display;

An electronic circuit integrated in the outer casing, connected to the optical valve group for controlling opening or closing of each light valve of the optical valve group according to a control logic;

An optical lens integrated in the housing for amplifying an image after passing through the optical valve set so that a user's eye can see the enlarged image through the optical lens.
A head mounted display device according to claim 8, wherein:

The light valve group includes a left eye light valve group and a right eye light valve group, an image of the left eye light valve group is used for display to a left eye of a user, and an image of the right eye light valve group is used for displaying to a right of the user eye.
The head-mounted display device according to claim 8, wherein the set of light valves are light valves arranged side by side in space, and form a rectangular, square, elliptical or circular shape as a whole.
A head mounted display device according to any one of claims 8 to 10, wherein said electronic circuit integrated in the housing is connected to said optical valve group for controlling said optical valve group in accordance with control logic The opening or closing of each light valve is as follows:

The electronic circuit is configured to control each of the light valves of the light valve group to perform an opening and closing operation in sequence according to a spatial arrangement order;

Alternatively, the light valve component is a plurality of subgroups, each subgroup comprising at least one light valve, and the electronic circuit is configured to control the respective light valve subgroups to sequentially perform opening and closing operations.