WO2019242231A1 - 头戴式显示设备和用于头戴式显示设备的方法 - Google Patents
头戴式显示设备和用于头戴式显示设备的方法 Download PDFInfo
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- WO2019242231A1 WO2019242231A1 PCT/CN2018/117252 CN2018117252W WO2019242231A1 WO 2019242231 A1 WO2019242231 A1 WO 2019242231A1 CN 2018117252 W CN2018117252 W CN 2018117252W WO 2019242231 A1 WO2019242231 A1 WO 2019242231A1
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- optical component
- head
- display device
- mounted display
- working mode
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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
-
- 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
- G02B27/0176—Head mounted characterised by mechanical features
Definitions
- the present disclosure relates to a head-mounted display device and a method for the head-mounted display device.
- head-mounted display devices have flooded into our daily lives.
- the working principle of a head mounted display is to project a two-dimensional image directly into the wearer's eyes. Specifically, a set of optical systems is used to magnify the image on the ultramicro display screen and project the image on the wearer. The user's retina so that the wearer can view the image displayed on the display.
- the wearer is limited to viewing the picture himself and others cannot view it and cannot participate in it when needed.
- An aspect of the present disclosure provides a head-mounted display device including a display screen, a visual optical component, a projection optical component, and a switching mechanism.
- the switching mechanism is used to switch the positions of the visual optical component and the projection optical component, so as to realize the conversion between the first working mode and the second working mode.
- the first working mode the light emitted by the display screen is incident on the visual optical component, and the visual optical component emits parallel light to the eyes of the wearer of the head-mounted display device.
- the display The light emitted by the screen is incident on the projection optical component, and the light emitted by the projection optical component is focused and imaged at a preset distance outside the head-mounted display device.
- the switching mechanism includes a guide rail, a first moving part, a second moving part, and a motor.
- the first moving part and the second moving part can move along the guide rail under the driving of a motor.
- the visual optical component is fixed on the first moving part, and the projection optical component is fixed on the second moving part.
- the guide rail is an arc guide or a linear guide.
- the head-mounted display device further includes a guiding optical component, wherein: in the first working mode, the light emitted by the display screen enters the visual optical component after passing through the guiding optical component. In the second working mode, the light emitted by the display screen enters the projection optical component after passing through the guiding optical component.
- the guiding optical component includes a lens group and a turning mirror
- the lens group includes one or more lenses
- the turning mirror is a reflecting mirror or a half mirror.
- the light emitted by the display screen is incident on the lens group, and the light emitted by the lens group is incident on the turning mirror.
- the turning mirror is used to turn the light emitted by the lens group.
- the visual optical assembly includes one or more lenses.
- the visual optical assembly includes a concave mirror.
- the projection optical assembly includes one or more lenses.
- the display is any one or more of the following: LED display, AM-LCD display, OLED display, LCOS display. And / or, the display screen can obtain images through optical fiber conduction.
- Another aspect of the present disclosure provides a method for a head-mounted display device including a display screen, a visual optical component, a projection optical component, and a switching mechanism.
- the method includes: switching positions of the visual optical component and the projection optical component by a switching mechanism, so as to realize the conversion between the first working mode and the second working mode.
- the first working mode the light emitted by the display screen is incident on the visual optical component, and the visual optical component emits parallel light to the eyes of the wearer of the head-mounted display device.
- the display light is emitted.
- the light is incident on the projection optical component, and the light emitted by the projection optical component is focused and imaged at a preset distance outside the head-mounted display device.
- the switching mechanism includes a guide rail, a first moving part, a second moving part, and a motor.
- the switching of the position of the visual optical component and the projection optical component by the switching mechanism includes: driving the first moving part along a guide rail by a motor, so that the first moving part drives the visual optical component fixed on the first moving part to move, and /
- the second moving part is driven to move along the guide rail by the motor, so that the second moving part drives the projection optical component fixed on the second moving part to move.
- the guide rail is an arc guide or a linear guide.
- the head-mounted display device further includes a guiding optical component, wherein, in the first working mode, the light emitted by the display screen enters the visual optical component after passing through the guiding optical component, and in the second working mode, the display screen The emitted light enters the projection optical component after passing through the guiding optical component.
- the guiding optical component includes a lens group and a turning mirror
- the lens group includes one or more lenses
- the turning mirror is a reflecting mirror or a half mirror.
- the light emitted by the display screen is incident on the lens group, and the light emitted by the lens group is incident on the turning mirror.
- the turning mirror is used to turn the light emitted by the lens group.
- the visual optical assembly includes one or more lenses.
- the visual optical assembly includes a concave mirror.
- the projection optical assembly includes one or more lenses.
- the display is any one or more of the following: LED display, AM-LCD display, OLED display, LCOS display. And / or, the display screen can obtain images through optical fiber conduction.
- FIG. 1 schematically illustrates an application scenario of a head-mounted display device and a method for a head-mounted display device according to an embodiment of the present disclosure
- FIG. 2A schematically illustrates a structure diagram of a head-mounted display device in a first operation mode according to an embodiment of the present disclosure
- FIG. 2B schematically illustrates a structural diagram of a head-mounted display device in a second working mode according to an embodiment of the present disclosure
- FIG. 3A schematically illustrates a structure diagram of a head-mounted display device according to an embodiment of the present disclosure
- FIG. 3B schematically illustrates a structure diagram of a head-mounted display device according to another embodiment of the present disclosure
- FIG. 3C schematically illustrates a structural diagram of a head-mounted display device according to still another embodiment of the present disclosure.
- FIG. 4 schematically illustrates a flowchart of a method for a head-mounted display device according to an embodiment of the present disclosure.
- Embodiments of the present disclosure provide a head-mounted display device and a method that can be used for the head-mounted display device.
- the head-mounted display device includes a display screen, a visual optical component, a projection optical component, and a switching mechanism.
- the switching mechanism in the head-mounted display device can switch the position of the visual optical component and the projection optical component in the head-mounted display device, and change the optical path composition in the head-mounted display device to achieve the head-mounted type.
- Conversion of the first working mode and the second working mode of the display device wherein the first working mode is a normal display mode, and only a wearer of the head-mounted display device can watch the display on the display screen of the head-mounted display device.
- Screen, the second working mode is a projection display mode, which is not limited to the wearer of the head-mounted display device, and other users can also watch the screen displayed on the display screen of the head-mounted display device together.
- FIG. 1 schematically illustrates an application scenario of a head-mounted display device and a method for a head-mounted display device according to an embodiment of the present disclosure. It should be noted that FIG. 1 is only an example of a scenario to which the embodiments of the present disclosure can be applied to help those skilled in the art understand the technical content of the present disclosure, but it does not mean that the embodiments of the present disclosure cannot be applied to other devices. , System, environment, or scene.
- this application scenario shows a scenario where a user 101 uses a head-mounted display device 102.
- the head-mounted display device 102 is a glasses-type head-mounted display device, and the user 101 wears the head-mounted display device.
- the display device 102 is worn through temples and nose pads.
- the display screen in the head-mounted display device 102 is close to the eyes of the user 101, and the head-mounted display device 102 adjusts the focal length through the light path to project a picture on the eyes of the user 101 at a short distance to Allows the user 101 to view the pictures displayed on the display screen of the head-mounted display device 102, and can achieve the effects of augmented reality, virtual reality, mixed reality and the like based on the assistance of the head-mounted display device 102.
- the manner in which the head-mounted display device 102 and the user 101 wear the head-mounted display device 102 shown in FIG. 1 are merely examples, and the head-mounted display device 102 may be various types of head-mounted display devices, such as For the glasses type, the eye mask type, the helmet type, and the like, when the user 101 uses the head-mounted display device 102, the user 101 can wear the head-mounted display device 102 according to the style of the head-mounted display device 102.
- FIGS. 2A to 2B the structure of a head-mounted display device provided by an embodiment of the present disclosure is exemplarily described through FIGS. 2A to 2B.
- FIG. 2A schematically illustrates a structure diagram of a head-mounted display device in a first operation mode according to an embodiment of the present disclosure.
- the head-mounted display device 200 includes a display screen 201, a visual optical component 202, a projection optical component 203, and a switching mechanism 204.
- the wearer of the head-mounted display device 200 is also shown in FIG. 2A Position of the eye, a lens 205 and a half mirror 206.
- the projection optical component 203 in the head-mounted display device 200 is temporarily inactive.
- the switching mechanism 204 is used to switch the positions of the projection optical component 203 and the visual optical component 202 when the working mode needs to be switched. Make the switch.
- This embodiment first focuses on describing the static structure of the head-mounted display device 200 in the first working mode, and then specifically describes the switching mechanism 204 that causes the head-mounted display device 200 to dynamically switch.
- the light emitted from the display screen 201 in the head-mounted display device 200 enters the visual optical component 202 after passing through a lens 205 and a half mirror 206.
- the visual optical component 202 is specifically a A concave mirror 202 that reflects light incident thereon to obtain parallel reflected light that enters the eyes of the wearer of the head-mounted display device 200, so that the head-mounted display device The wearer of 200 can see an enlarged virtual image of the screen displayed on the display screen 201.
- the light emitted from the display screen 201 in the head mounted display device 200 may pass through some other optical elements and then enter the visual optical component 202 as shown in FIG. 2A, or may directly pass through the other optical elements without passing through other optical elements. It is incident on the visual optical module 202.
- the other optical elements may be lenses, lens groups, mirrors, combinations of lenses and mirrors, lens groups and The combination of mirrors, etc.
- the visual optical component 202 may be a concave mirror as shown in FIG.
- the visual optical component 202 may be a concave mirror as shown in FIG.
- the visual optical component 202 may be a lens or a lens group.
- FIG. 2B schematically illustrates a structural diagram of a head-mounted display device in a second working mode according to an embodiment of the present disclosure.
- the head-mounted display device 200 includes a display screen 201, a visual optical component 202, a projection optical component 203, and a switching mechanism 204.
- FIG. 2B also shows a lens 205 and a transflective mirror 206 and projection screen 207.
- the light emitted from the display screen 201 in the head-mounted display device 200 is incident on the projection optical component 203, and the light emitted by the projection optical component 203 is outside the head-mounted display device 200.
- the visual optical component 202 in the head-mounted display device 200 is temporarily ineffective.
- the switching mechanism 204 is used to switch the visual optical component 202 and the projection optical component 203 when the operating mode needs to be switched. Position.
- the static structure of the head-mounted display device 200 in the second working mode is described first, and the switching mechanism 204 that causes the head-mounted display device 200 to dynamically switch is described in detail below.
- the projection screen 207 is placed at a preset distance outside the head-mounted display device 200, and the light emitted from the display screen 201 in the head-mounted display device 200 passes through a lens 205 and a half mirror 206 and then enters A projection optical component 203.
- the projection optical component 203 is a projection lens 203.
- the projection lens 203 projects light incident thereon, and the output light is at a preset distance outside the head-mounted display device 200.
- the imaging is converged on the projection screen 207, so that any user can see an enlarged image of the screen displayed on the display screen 201 in the head-mounted display device 200 on the projection screen 207.
- the light emitted by the display screen 201 in the head-mounted display device 200 may be incident on the projection optical component 203 after passing through some other optical elements as shown in FIG. 2B, or may be directly incident without passing through other optical elements.
- the other optical elements may be a lens, a lens group, a mirror, a combination of a lens and a mirror, a lens group and a reflection
- the combination of mirrors, etc., and the projection optical component 203 can be a single lens as shown in FIG. 2B, or a lens group formed by a plurality of lenses.
- each lens can be adjusted as needed, and there is no need to do this. Limitation, it is only necessary to satisfy the condition that the other optical element guides the light emitted from the display screen 201 to the projection optical component 203, and the other optical element and the projection optical component 203 cooperate with each other so that the output light of the projection optical component 203 is The light, which travels in a direction outside the head-mounted display device 200 and is capable of condensing an image at a certain distance.
- the projection optical component 203 may be a single lens as shown in FIG. 2B or a lens group formed by a plurality of lenses.
- each lens can be adjusted as needed, and no limitation is required here.
- the only condition to be satisfied is that after the light emitted from the display screen 201 enters the projection optical component 203, the projection optical component 203 outputs to the head-mounted display device 200. Light traveling in an outward direction and capable of converging imaging at a certain distance.
- the switching mechanism 204 is used to switch the positions of the visual optical component 202 and the projection optical component 203, so as to realize the first working mode of the head-mounted display device 200 and
- the first working mode the light emitted by the display screen 201 is incident on the visual optical component 202, and the visual optical component 202 emits parallel light to the eyes of the wearer of the head-mounted display device 200.
- the second working mode the light emitted by the display screen 201 is incident on the projection optical component 203, and the light emitted by the projection optical component 203 is focused and imaged at a preset distance outside the head-mounted display device 200.
- the first working mode of the head-mounted display device 200 corresponds to the scene viewed by the wearer alone, and the second working mode corresponds to the scene where multiple users share the viewing.
- the head-mounted display device 200 provided by the embodiment of the present disclosure is switched by The mechanical action of the component 204 to achieve the above-mentioned switching between the private and shared scenes meets the needs of users when using a head-mounted display device.
- the switching mechanism 204 in the head-mounted display device 200 may be a mechanical device composed of a guide rail, a moving part, and a motor.
- the motor may drive the moving part to move on the guide rail, and the visual optical assembly 202 And / or the projection optical component 203 is installed on the moving part, and the moving part drives the visual optical component 202 and / or the projection optical component 203 to move together, so as to realize the visual optical component 202 and / or the projection optical component 203 in a head-mounted type A change in position in the display device 200.
- the direction of the guide rail may be in various forms.
- the guide rail may be an arc guide, that is, the moving part may drive the visual optical component 202 and / or the projection optical component 203 to move along the arc direction on the guide to change the position.
- the guide rail may be a linear guide rail, that is, the moving part may drive the visual optical component 202 and / or the projection optical component 203 to move along the linear direction on the guide rail to achieve a change in position, and the like, which are not limited herein.
- FIG. 3A schematically illustrates a structural diagram of a head-mounted display device according to an embodiment of the present disclosure.
- the head-mounted display device 200 includes a display screen 201, a visual optical component 202, a projection optical component 203, a guide rail 2041, a first moving portion 2042, a second moving portion 2043, and a motor (not shown in the figure) Out).
- FIG. 3A also shows the positions of the eyes of the wearer of the head-mounted display device 200, a lens 205, and a half mirror 206, which have been described in detail in the foregoing, and are not repeated here.
- the guide rail 2041, the first moving part 2042, the second moving part 2043, and the motor constitute the switching mechanism 204 described above.
- the guide direction of the guide rail 2041 is the up-down direction as shown in the figure.
- the first moving part 2042 and the first The two moving parts 2043 are respectively connected with a motor.
- the motor can drive the first moving part 2042 to move on the guide rail 2041 in the up-down direction shown in the figure, and the motor can drive the second moving part 2043 on the guide rail 2041 in the up-down direction shown in the figure.
- the visual optical component 202 is fixed on the first moving part 2042.
- the first moving part 2042 can drive the visual optical component 202 to move on the guide rail 2041 in the vertical direction shown in the figure, and the projection optical component 203 is fixed on the second moving part.
- the second moving part 2043 can drive the projection optical assembly 203 to move on the guide rail 2041 in the vertical direction shown in the figure.
- the head-mounted display device 200 shown in FIG. 3A is in the first working mode.
- the work of the head-mounted display device 200 is required.
- the mode is switched from the first working mode to the second working mode.
- the head-mounted display device 200 when the head-mounted display device 200 is in the second working mode, when the wearer of the head-mounted display device 200 no longer needs to share the screen with other users and wants to watch it alone, the work of the head-mounted display device 200 is required.
- the mode is switched from the second working mode to the first working mode. At this time, it is necessary to drive the first moving part 2042 of the switching mechanism 204 in the head mounted display device 200 to drive the visual optical assembly 202 to move upward along the guide rail 2041, and drive the second moving part 2043 to be driven by the motor of the switching mechanism 204.
- the projection optical component 203 moves downward along the guide rail 2041, so that the light emitted by the display screen 201 finally enters the visual optical component 202, and the visual optical component 202 emits parallel light to the eyes of the wearer of the head-mounted display device 200. This shows the switching of the head-mounted display device 200 from the second working mode to the first working mode.
- FIG. 3B schematically illustrates a structural diagram of a head-mounted display device according to another embodiment of the present disclosure.
- the head-mounted display device 200 includes a display screen 201, a visual optical component 202, a projection optical component 203, a guide 2041, a first moving portion 2042, a second moving portion 2043, and a motor (not shown in the figure) Out).
- FIG. 3B also shows the positions of the eyes of the wearer of the head-mounted display device 200, a lens 205, and a half mirror 206, which have been described in detail in the foregoing, and are not repeated here.
- the guide rail 2041, the first moving part 2042, the second moving part 2043, and the motor constitute the switching mechanism 204 described above.
- the guide direction of the guide rail 2041 is the arc direction shown in the figure.
- the first moving part 2042 and The second moving part 2043 is respectively connected with a motor.
- the motor can drive the first moving part 2042 to move on the guide rail 2041 in the circular arc direction shown in the figure, and the motor can drive the second moving part 2043 on the guide rail 2041 along the figure. Circular arc motion.
- the visual optical component 202 is fixed on the first moving part 2042.
- the first moving part 2042 can drive the visual optical component 202 to move on the guide rail 2041 in the circular arc direction shown in the figure, and the projection optical component 203 is fixed on the second motion.
- the second moving part 2043 can drive the projection optical component 203 to move on the guide rail 2041 in the circular arc direction shown in the figure.
- the head-mounted display device 200 shown in FIG. 3B is in the first working mode.
- the work of the head-mounted display device 200 is required.
- the mode is switched from the first working mode to the second working mode.
- the head-mounted display device 200 when the head-mounted display device 200 is in the second working mode, when the wearer of the head-mounted display device 200 no longer needs to share the screen with other users and wants to watch it alone, the work of the head-mounted display device 200 is required.
- the mode is switched from the second working mode to the first working mode. At this time, it is necessary to drive the first moving part 2042 of the switching mechanism 204 in the head mounted display device 200 to drive the visual optical assembly 202 to rotate upward along the guide rail 2041, and drive the second moving part 2043 to be driven by the motor of the switching mechanism 204.
- the projection optical component 203 is rotated downward along the guide rail 2041, so that the light emitted by the display screen 201 is finally incident on the visual optical component 202, and the visual optical component 202 emits parallel light to the eyes of the wearer of the head-mounted display device 200, that is, to achieve This shows the switching of the head-mounted display device 200 from the second working mode to the first working mode.
- FIG. 3C schematically illustrates a structural diagram of a head-mounted display device according to still another embodiment of the present disclosure.
- the head-mounted display device 200 includes a display screen 201, a visual optical component 202, a projection optical component 203, a guide 2041, a first moving portion 2042, a second moving portion 2043, and a motor (not shown in the figure) Out), the first moving part 2042 is divided into two sub-moving parts that move up and down together, and the second moving part 2043 is divided into two sub-moving parts that move up and down together.
- FIG. 3C also shows a lens 205, a transflective mirror 206, and a projection screen 207, which have been described in detail in the foregoing, and are not repeated here.
- the guide rail 2041, the first moving part 2042, the second moving part 2043, and the motor constitute the switching mechanism 204 described above.
- the guide direction of the guide rail 2041 is a horizontal direction as shown in the figure.
- the first moving part 2042 and the first The two moving parts 2043 are respectively connected to a motor.
- the motor can drive the first moving part 2042 to move on the guide rail 2041 in the horizontal direction shown in the figure, and the motor can drive the second moving part 2043 on the guide rail 2041 to be horizontal in the figure.
- the visual optical component 202 is fixed on the first moving part 2042.
- the first moving part 2042 can drive the visual optical component 202 to move on the guide rail 2041 in the horizontal direction shown in the figure, and the projection optical component 203 is fixed on the second moving part.
- the second moving part 2043 can drive the projection optical assembly 203 to move on the guide rail 2041 in the horizontal direction shown in the figure.
- the head-mounted display device 200 shown in FIG. 3C is in the second working mode.
- the head-mounted display device 200 is required. Switching of the working mode from the second working mode to the first working mode.
- the first moving part 2042 needs to be driven by the motor of the switching mechanism 204 in the head mounted display device 200 to drive the visual optical assembly 202 horizontally to the left along the guide rail 2041
- the second moving part is driven by the motor of the switching mechanism 204 2043 drives the projection optical component 203 to move horizontally to the right along the guide rail 2041, so that the light emitted by the display screen 201 finally enters the visual optical component 202, and the visual optical component 202 emits parallel light to the eyes of the wearer of the head-mounted display device 200 That is, the head-mounted display device 200 is switched from the second working mode to the first working mode.
- the head-mounted display device 200 when the head-mounted display device 200 is in the first working mode, when the wearer of the head-mounted display device 200 needs to share the viewed content with other users, the working mode of the head-mounted display device 200 needs to be changed. Switching from the first working mode to the second working mode. At this time, it is necessary to drive the first moving part 2042 by the motor of the switching mechanism 204 in the head-mounted display device 200 to drive the visual optical assembly 202 horizontally to the right along the guide rail 2041, and drive the second moving part by the motor of the switching mechanism 204.
- the 2043 drives the projection optical component 203 to move horizontally to the left along the guide rail 2041, so that the light emitted by the display screen 201 finally enters the projection optical component 203, and the light emitted by the projection optical component 203 converges at a preset distance outside the head-mounted display device 200.
- Imaging that is, the switching of the head-mounted display device 200 from the first working mode to the second working mode is realized.
- FIGS. 3A to 3C it can be known that the switching of the working mode of the head-mounted display device 200 can be achieved in various ways. It should be understood that FIGS. 3A to 3C are only schematically illustrated through a few specific examples. Under the same idea, Other methods can also achieve the same effect, which is not limited here.
- the head-mounted display device further includes a guiding optical component, wherein, in the first working mode, the light emitted from the display screen enters the visual optical component after passing through the guiding optical component, and works in the second working mode. In the mode, the light from the display screen enters the projection optical component after passing through the guiding optical component.
- the lens 205 and the half mirror 206 constitute a guiding optical component in the head-mounted display device 200.
- the light emitted by the display screen 201 is first incident on The lens 205 in the optical component is guided, and the light emitted by the lens 205 is incident on the half mirror 206, and the half mirror 206 is used for turning the light emitted by the lens 205 so that the light is incident on the visual optical component 202 or projection Optical component 203.
- the guiding optical component can be reasonably arranged in the optical path before the visual optical component 202 or the projection optical component 203, so that the optical path in the head-mounted display device 200 can be more space-saving, thereby enabling a more compact and convenient head-mounted display.
- Equipment 200 when a transflective mirror 206 is used in the guiding optical component to perform the light path turning function instead of other turning mirrors having a turning function, the light emitted from the visual optical component 202 to the wearer's eyes can pass through the transflective lens.
- the half mirror 206 does not need to leave an unobstructed propagation space for the light emitted by the visual optical component 202 on the head-mounted display device 200, thereby further reducing the space occupied by the head-mounted display device 200.
- the guiding optical component may be a lens, a lens group, a reflecting mirror, a combination of a lens and a reflecting mirror, a combination of a lens group and a reflecting mirror, and the like, which are not limited herein.
- the image of the display screen 201 in the head-mounted display device 200 may directly pass through a light emitting diode (LED), an active matrix liquid crystal display (AM-LCD), an organic light emitting diode (OLED), and a liquid crystal.
- LED light emitting diode
- AM-LCD active matrix liquid crystal display
- OLED organic light emitting diode
- LCOS Attached silicon
- FIG. 4 schematically illustrates a flowchart of a method for a head-mounted display device according to an embodiment of the present disclosure.
- the method includes operations S401 to S403, which are used to explain a solution flow of switching the working mode of the head-mounted display device shown in the foregoing.
- the head-mounted display device includes a display screen, Vision optics, projection optics and switching mechanism.
- the first working mode of the head-mounted display device corresponds to the scene viewed by the wearer alone, and the second working mode corresponds to the scene where multiple users share the viewing.
- the method shown in FIG. 4 enables the head-mounted display device 200 to switch by The mechanical action of the component 204 to achieve the above-mentioned switching between the private and shared scenes meets the needs of users when using a head-mounted display device.
- the switching mechanism includes a guide rail, a first moving portion, a second moving portion, and a motor.
- switching the positions of the visual optical component and the projection optical component by the switching mechanism includes: driving the first moving part along a guide rail by a motor, so that the first moving part drives the visual optical component fixed on the first moving part to move, And / or, the second moving part is driven to move along the guide rail by the motor, so that the second moving part drives the projection optical component fixed on the second moving part to move.
- the guide rail may be an arc guide or a linear guide.
- the head-mounted display device further includes a guiding optical component.
- the operation S402 described above is in the first working mode, the light emitted by the display screen is incident on the visual optical component, and the visual optical component emits parallel light.
- the eyes of the wearer of the head-mounted display device include: in the first working mode, the light emitted by the display screen enters the visual optical component after passing through the guiding optical component.
- the light emitted from the display screen is incident on the projection optical component, and the light emitted by the projection optical component is focused and imaged at a preset distance outside the head-mounted display device.
- the second working mode The light emitted by the display screen enters the projection optical component after passing through the guiding optical component.
- the guiding optical component includes a lens group and a turning mirror.
- the lens group includes one or more lenses.
- the turning mirror is a reflective mirror or a half mirror. The light emitted by the display screen is incident on the lens group, and the light emitted by the lens group is incident on the turning mirror.
- the turning mirror is used to turn the light emitted by the lens group.
- the visual optical assembly includes one or more lenses.
- the visual optical component may include a concave mirror.
- the projection optical assembly includes one or more lenses.
- the display screen may be any one or more of the following: LED display screen, AM-LCD display screen, OLED display screen, LCOS display screen; and / or, the display screen may be obtained through optical fiber conduction. image.
- the positions of the visual optical component and the projection optical component are switched by the switching component in the head-mounted display device, so as to implement the switching between the first working mode and the second working mode of the head-mounted display device.
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Abstract
本公开提供了一种头戴式显示设备，包括：显示屏、目视光学组件、投影光学组件和切换机构，切换机构用于切换目视光学组件和投影光学组件的位置，以实现第一工作模式和第二工作模式的转换。在第一工作模式下，显示屏发出的光入射至目视光学组件，目视光学组件出射平行光至头戴式显示设备的佩戴者的眼睛；在第二工作模式下，显示屏发出的光入射至投影光学组件，投影光学组件出射的光在头戴式显示设备外的预设距离处汇聚成像。本公开还提供了一种用于头戴式显示设备的方法。
Description
本公开涉及一种头戴式显示设备和一种用于头戴式显示设备的方法。
近年来，伴随着虚拟现实、增强现实、混合现实等技术的发展，头戴式显示设备大量涌入到我们的日常生活中。头戴式显示设备(HMD，Head Mount Display)的工作原理是把二维图像直接投射到佩戴者的眼睛里，具体就是通过一组光学系统放大超微显示屏上的图像，将图像投射于佩戴者的视网膜上，使得佩戴者能够观看显示屏显示的图像。现有技术中，在用户使用头戴式显示设备时，仅限于佩戴者本人观看画面，而其他人无法观看，无法在需要时参与其中。
发明内容
本公开的一个方面提供了一种头戴式显示设备，包括：显示屏、目视光学组件、投影光学组件和切换机构。切换机构用于切换目视光学组件和投影光学组件的位置，以实现第一工作模式和第二工作模式的转换。在第一工作模式下，所述显示屏发出的光入射至所述目视光学组件，目视光学组件出射平行光至头戴式显示设备的佩戴者的眼睛，在第二工作模式下，显示屏发出的光入射至投影光学组件，投影光学组件出射的光在头戴式显示设备外的预设距离处汇聚成像。
可选地，切换机构包括：导轨、第一运动部、第二运动部和马达。第一运动部和第二运动部在马达的驱动下可沿导轨运动，目视光学组件固定于第一运动部上，投影光学组件固定于第二运动部上。
可选地，导轨为圆弧导轨或直线导轨。
可选地，头戴式显示设备还包括引导光学组件，其中：在第一工作模式下，显示屏发出的光经过引导光学组件后入射至目视光学组件。在第二工作模式下，显示屏发出的光经过引导光学组件后入射至投影光学组件。
可选地，引导光学组件包括透镜组和转向镜，透镜组包括一个或多个透镜，转向镜为反射镜或半透半反镜。显示屏发出的光入射至透镜组，透镜组出射的光入射至转向镜，转向镜用于对透镜组出射的光进行转向。
可选地，目视光学组件包括一个或多个透镜。
可选地，目视光学组件包括凹面反射镜。
可选地，投影光学组件包括一个或多个透镜。
可选地，显示屏为以下任意一种或多种：LED显示屏、AM-LCD显示屏、OLED显示屏、LCOS显示屏。并且/或者，所述显示屏可通过光纤传导获得图像。
本公开的另一个方面提供了一种用于头戴式显示设备的方法，头戴式显示设备包括：显示屏、目视光学组件、投影光学组件和切换机构。所述方法包括：通过切换机构切换目视光学组件和投影光学组件的位置，以实现第一工作模式和第二工作模式的转换。其中，在第一工作模式下，显示屏发出的光入射至目视光学组件，目视光学组件出射平行光至头戴式显示设备的佩戴者的眼睛，在第二工作模式下，显示屏发出的光入射至投影光学组件，投影光学组件出射的光在头戴式显示设备外的预设距离处汇聚成像。
可选地，切换机构包括：导轨、第一运动部、第二运动部和马达。上述通过切换机构切换目视光学组件和投影光学组件的位置包括：通过马达驱动第一运动部沿导轨运动，使得第一运动部带动固定于第一运动部上的目视光学组件运动，并且/或者，通过马达驱动第二运动部沿导轨运动，使得第二运动部带动固定于第二运动部上的投影光学组件运动。
可选地，导轨为圆弧导轨或直线导轨。
可选地，头戴式显示设备还包括引导光学组件，其中，在第一工作模式下，显示屏发出的光经过引导光学组件后入射至目视光学组件，在第二工作模式下，显示屏发出的光经过引导光学组件后入射至投影光学组件。
可选地，引导光学组件包括透镜组和转向镜，透镜组包括一个或多个透镜，转向镜为反射镜或半透半反镜。显示屏发出的光入射至透镜组，透镜组出射的光入射至转向镜，转向镜用于对透镜组出射的光进行转向。
可选地，目视光学组件包括一个或多个透镜。
可选地，目视光学组件包括凹面反射镜。
可选地，投影光学组件包括一个或多个透镜。
可选地，显示屏为以下任意一种或多种：LED显示屏、AM-LCD显示屏、OLED显示屏、LCOS显示屏。并且/或者，显示屏可通过光纤传导获得图像。
为了更完整地理解本公开及其优势，现在将参考结合附图的以下描述，其中：
图1示意性示出了根据本公开的实施例的头戴式显示设备和用于头戴式显示设备的方法的应用场景；
图2A示意性示出了根据本公开的一个实施例的处于第一工作模式的头戴式显示设备的结构示意图；
图2B示意性示出了根据本公开的一个实施例的处于第二工作模式的头戴式显示设备的结构示意图；
图3A示意性示出了根据本公开的一个实施例的头戴式显示设备的结构示意图；
图3B示意性示出了根据本公开的另一个实施例的头戴式显示设备的结构示意图；
图3C示意性示出了根据本公开的又一个实施例的头戴式显示设备的结构示意图；以及
图4示意性示出了根据本公开的一个实施例的用于头戴式显示设备的方法的流程图。
以下，将参照附图来描述本公开的实施例。但是应该理解，这些描述只是示例性的，而并非要限制本公开的范围。在下面的详细描述中，为便于解释，阐述了许多具体的细节以提供对本公开实施例的全面理解。然而，明显地，一个或多个实施例在没有这些具体细节的情况下也可以被实施。此外，在以下说明中，省略了对公知结构和技术的描述，以避免不必要地混淆本公开的概念。
在此使用的术语仅仅是为了描述具体实施例，而并非意在限制本公开。在此使用的术语“包括”、“包含”等表明了所述特征、步骤、操作和/或部件的存在，但是并不排除存在或添加一个或多个其他特征、步骤、操作或部件。
在此使用的所有术语(包括技术和科学术语)具有本领域技术人员通常所理解的含义，除非另外定义。应注意，这里使用的术语应解释为具有与本说明书的上下文相一致的含义，而不应以理想化或过于刻板的方式来解释。
在使用类似于“A、B和C等中至少一个”这样的表述的情况下，一般来说应该按照本领域技术人员通常理解该表述的含义来予以解释(例如，“具有A、B和C中至少一个的系统”应包括但不限于单独具有A、单独具有B、单独具有C、具有A和B、具有A和C、具有B和C、和/或具有A、B、C的系统等)。在使用类似于“A、B或C等中至少一个”这样的表述的情况下，一般来说应该按照本领域技术人员通常理解该表述的含义来予以解释(例如，“具有A、B或C中至少一个的系统”应包括但不限于单独具有A、单独具有B、单独具有C、具有A和B、具有A和C、具有B和C、和/或具有A、B、C的系统等)。本领域技术人员还应理解，实质上任意表示两个或更多可选项目的转折连词和/或短语，无论是在说明书、权利要求书还是附图中，都应被理解为给出了包括这些项目之一、这些项目任一方、或两个项目的可能性。例如，短语“A或B”应当被理解为包括“A”或“B”、或“A和B”的可 能性。
本公开的实施例提供了一种头戴式显示设备以及能够用于头戴式显示设备的方法。该头戴式显示设备包括显示屏、目视光学组件、投影光学组件和切换机构。在使用过程中，头戴式显示设备中的切换机构可以切换目视光学组件和投影光学组件在头戴式显示设备中的位置，改变头戴式显示设备中的光路组成，以实现头戴式显示设备的第一工作模式和第二工作模式的转换，其中，第一工作模式为普通显示模式，仅限于头戴式显示设备的佩戴者能够观看头戴式显示设备中的显示屏所显示的画面，第二工作模式为投影显示模式，不限于头戴式显示设备的佩戴者，其他用户也可一同观看头戴式显示设备中的显示屏所显示的画面。
图1示意性示出了根据本公开的实施例的头戴式显示设备和用于头戴式显示设备的方法的应用场景。需要注意的是，图1所示仅为可以应用本公开实施例的场景的示例，以帮助本领域技术人员理解本公开的技术内容，但并不意味着本公开实施例不可以用于其他设备、系统、环境或场景。
如图1所示，该应用场景展示了用户101使用头戴式显示设备102的场景，在此场景下，头戴式显示设备102是眼镜型的头戴式显示设备，用户101将该头戴式显示设备102通过镜腿和鼻托进行佩戴。当用户101佩戴头戴显示设备102时，头戴显示设备102中的显示屏贴近用户101的眼睛，头戴显示设备102中通过光路调整焦距以在近距离中对用户101的眼睛投射画面，以供用户101观看头戴式显示设备102中显示屏所显示的画面，并可基于头戴式显示设备102的辅助实现增强现实、虚拟现实、混合现实等效果。
应该理解，图1中所示的头戴式显示设备102以及用户101佩戴头戴式显示设备102的方式仅为示例，头戴式显示设备102可以是各种样式的头戴式显示设备，如眼镜型、眼罩型、头盔型、等等，用户101在使用头戴式显示设备102时可以根据头戴式显示设备102的样式进行佩戴，在此均不做限制。
首先通过图2A～2B对本公开实施例所提供的头戴式显示设备的结构进行示例性说明。
图2A示意性示出了根据本公开的一个实施例的处于第一工作模式的头戴式显示设备的结构示意图。
如图2A所示，该头戴式显示设备200包括显示屏201、目视光学组件202、投影光学组件203和切换机构204，图2A中还示出了该头戴式显示设备200的佩戴者的眼睛的位置、一个透镜205和一个半透半反镜206。
在图2A所示的第一工作模式下，头戴式显示设备200中的显示屏201发出的光入射至目视光学组件202，目视光学组件202出射平行光至头戴式显示设备200的佩戴者的眼睛。在第一工作模式下，头戴式显示设备200中的投影光学组件203暂时不发挥作用，切换机构 204用于在需要进行工作模式切换时，将投影光学组件203和目视光学组件202的位置进行切换。本实施例先着重对头戴式显示设备200在第一工作模式下的静态结构进行描述，下文再对使得头戴式显示设备200发生动态切换的切换机构204做具体描述。
具体地，头戴式显示设备200中的显示屏201发出的光经过一个透镜205和一个半透半反镜206之后入射至目视光学组件202，本实施例中目视光学组件202具体为一个凹面反射镜202，该反射镜202对入射到其上的光进行反射得到平行的反射光，该平行的反射光进入该头戴式显示设备200的佩戴者的眼睛，使得该头戴式显示设备200的佩戴者能够看到显示屏201所显示的画面的放大的虚像。
需要说明的是，头戴式显示设备200中的显示屏201发出的光可以如图2A所示的经过一些其他光学元件后再入射至目视光学组件202，也可以不经过其他光学元件而直接入射至目视光学组件202。在显示屏201发出的光经过其他光学元件后再入射至目视光学组件202的实施例中，所述其他光学元件可以是透镜、透镜组、反射镜、透镜与反射镜的组合、透镜组与反射镜的组合、等等，以及，目视光学组件202可以是如图2A所示的凹面反射镜，也可以是透镜、透镜组、透镜与反射镜的组合、透镜组与反射镜的组合、等等各种单一光学元件或光学元件的组合，在此均不需要做限制，只需要满足的条件是：所述其他光学元件将显示屏201发出的光引导至目视光学组件202，所述其他光学元件和目视光学组件202相互配合，使得目视光学组件202的输出光为向头戴式显示设备200的佩戴者的眼睛方向传播的平行光。在显示屏201发出的光不经过其他光学元件而直接入射至目视光学组件202的实施例中，目视光学组件202可以是如图2A所示的凹面反射镜，也可以是透镜、透镜组、透镜与反射镜的组合、透镜组与反射镜的组合、等等各种单一光学元件或光学元件的组合，在此不需要做限制，只需要满足的条件是：显示屏201发出的光入射至目视光学组件202后，目视光学组件202输出向头戴式显示设备200的佩戴者的眼睛方向传播的平行光。
图2B示意性示出了根据本公开的一个实施例的处于第二工作模式的头戴式显示设备的结构示意图。
如图2B所示，该头戴式显示设备200包括显示屏201、目视光学组件202、投影光学组件203、切换机构204，图2B中还示出了一个透镜205、一个半透半反镜206和投影屏幕207。
在图2B所示的第二工作模式下，头戴式显示设备200中的显示屏201发出的光入射至投影光学组件203，投影光学组件203出射的光在头戴式显示设备200外的预设距离处汇聚成像。在第二工作模式下，头戴式显示设备200中的目视光学组件202暂时不发挥作用，切换机构204用于在需要进行工作模式切换时，将目视光学组件202和投影光学组件203的位置进行切换。本实施例先着重对头戴式显示设备200在第二工作模式下的静态结构进行描述， 下文再对使得头戴式显示设备200发生动态切换的切换机构204做具体描述。
具体地，投影屏幕207置于头戴式显示设备200外的预设距离处，头戴式显示设备200中的显示屏201发出的光经过一个透镜205和一个半透半反镜206之后入射至投影光学组件203，本实施例中投影光学组件203具体为一个投影透镜203，该投影透镜203对入射到其上的光进行投射，输出的光在头戴式显示设备200外的预设距离处的投影屏幕207上汇聚成像，使得任意用户都可以在投影屏幕207上看到头戴式显示设备200中的显示屏201所显示的画面的放大的像。
需要说明的是，头戴式显示设备200中的显示屏201发出的光可以如图2B所示的经过一些其他光学元件后再入射至投影光学组件203，也可以不经过其他光学元件而直接入射至投影光学组件203。在显示屏201发出的光经过其他光学元件后再入射至投影光学组件203的实施例中，所述其他光学元件可以是透镜、透镜组、反射镜、透镜与反射镜的组合、透镜组与反射镜的组合、等等，以及，投影光学组件203可以是如图2B所示的单一透镜，也可以是多个透镜形成的透镜组，各透镜的参数可以根据需要调整，在此均不需要做限制，只需要满足的条件是：所述其他光学元件将显示屏201发出的光引导至投影光学组件203，所述其他光学元件和投影光学组件203相互配合，使得投影光学组件203的输出光为向头戴式显示设备200外的方向传播的、能够在一定距离处汇聚成像的光。在显示屏201发出的光不经过其他光学元件而直接入射至投影光学组件203的实施例中，投影光学组件203可以是如图2B所示的单一透镜，也可以是多个透镜形成的透镜组，各透镜的参数可以根据需要调整，在此不需要做限制，只需要满足的条件是：显示屏201发出的光入射至投影光学组件203后，投影光学组件203输出向头戴式显示设备200外的方向传播的、能够在一定距离处汇聚成像的光。
结合图2A～2B所示的头戴式显示设备200，其中，切换机构204用于切换目视光学组件202和投影光学组件203的位置，以实现头戴式显示设备200的第一工作模式和第二工作模式的转换，在第一工作模式下，显示屏201发出的光入射至目视光学组件202，目视光学组件202出射平行光至头戴式显示设备200的佩戴者的眼睛，在第二工作模式下，显示屏201发出的光入射至投影光学组件203，投影光学组件203出射的光在头戴式显示设备200外的预设距离处汇聚成像。可知，头戴式显示设备200的第一工作模式对应于佩戴者单独观看的场景，第二工作模式对应于多个用户共享观看的场景，本公开实施例提供的头戴式显示设备200通过切换组件204的机械动作来实现上述私密和共享的场景的切换，符合用户在使用头戴式显示设备时的需求。
在本公开的一个实施例中，头戴式显示设备200中的切换机构204可以是由导轨、运动 部和马达组成的机械装置，马达可以驱动运动部在导轨上运动，将目视光学组件202和/或投影光学组件203安装于运动部上，由运动部带动目视光学组件202和/或投影光学组件203一同运动，以实现目视光学组件202和/或投影光学组件203在头戴式显示设备200中的位置的改变。
其中，导轨方向可以是各种形式的，如导轨可以为圆弧导轨，即运动部可以带动目视光学组件202和/或投影光学组件203在导轨上沿圆弧方向运动以实现位置的改变，或者，导轨可以为直线导轨，即运动部可以带动目视光学组件202和/或投影光学组件203在导轨上沿直线方向运动以实现位置的改变，等等，在此不做限制。
下面通过图3A～3C来对头戴式显示设备200通过切换设备204在第一工作模式和第二工作模式间切换的方案进行具体说明。
图3A示意性示出了根据本公开的一个实施例的头戴式显示设备的结构示意图。
如图3A所示，该头戴式显示设备200包括显示屏201、目视光学组件202、投影光学组件203、导轨2041、第一运动部2042、第二运动部2043和马达(图中未示出)。此外，图3A中还示出了该头戴式显示设备200的佩戴者的眼睛的位置、一个透镜205和一个半透半反镜206，前文中已详细说明过，在此不再赘述。
其中，导轨2041、第一运动部2042、第二运动部2043和马达构成了前文所述的切换机构204，导轨2041的导向方向是如图中所示的上下方向，第一运动部2042和第二运动部2043分别与马达连接，马达可以驱动第一运动部2042在导轨2041上沿图中所示的上下方向运动，马达可以驱动第二运动部2043在导轨2041上沿图中所示的上下方向运动。目视光学组件202固定于第一运动部2042上，第一运动部2042可带动目视光学组件202在导轨2041上沿图中所示的上下方向运动，投影光学组件203固定于第二运动部2043上，第二运动部2043可带动投影光学组件203在导轨2041上沿图中所示的上下方向运动。
图3A所示的头戴式显示设备200处于第一工作模式下，当头戴式显示设备200的佩戴者需要将观看的内容与其他用户进行分享时，需要进行头戴式显示设备200的工作模式的切换，从第一工作模式切换至第二工作模式。此时，需要通过头戴式显示设备200中的切换机构204的马达驱动第一运动部2042带动目视光学组件202沿导轨2041向下运动，以及通过切换机构204的马达驱动第二运动部2043带动投影光学组件203沿导轨2041向上运动，使得显示屏201发出的光最终入射至投影光学组件203，投影光学组件203出射的光在头戴式显示设备200外的预设距离处汇聚成像，即实现了头戴式显示设备200从第一工作模式到第二工作模式的切换。
反之，当头戴式显示设备200处于第二工作模式时，当头戴式显示设备200的佩戴者不 再需要与其他用户共享画面，希望独自观看时，需要进行头戴式显示设备200的工作模式的切换，从第二工作模式切换至第一工作模式。此时，需要通过头戴式显示设备200中的切换机构204的马达驱动第一运动部2042带动目视光学组件202沿导轨2041向上运动，以及通过切换机构204的马达驱动第二运动部2043带动投影光学组件203沿导轨2041向下运动，使得显示屏201发出的光最终入射至目视光学组件202，目视光学组件202出射平行光至头戴式显示设备200的佩戴者的眼睛，即实现了头戴式显示设备200从第二工作模式到第一工作模式的切换。
图3B示意性示出了根据本公开的另一个实施例的头戴式显示设备的结构示意图。
如图3B所示，该头戴式显示设备200包括显示屏201、目视光学组件202、投影光学组件203、导轨2041、第一运动部2042、第二运动部2043和马达(图中未示出)。此外，图3B中还示出了该头戴式显示设备200的佩戴者的眼睛的位置、一个透镜205和一个半透半反镜206，前文中已详细说明过，在此不再赘述。
其中，导轨2041、第一运动部2042、第二运动部2043和马达构成了前文所述的切换机构204，导轨2041的导向方向是如图中所示的圆弧方向，第一运动部2042和第二运动部2043分别与马达连接，马达可以驱动第一运动部2042在导轨2041上沿图中所示的圆弧方向运动，马达可以驱动第二运动部2043在导轨2041上沿图中所示的圆弧方向运动。目视光学组件202固定于第一运动部2042上，第一运动部2042可带动目视光学组件202在导轨2041上沿图中所示的圆弧方向运动，投影光学组件203固定于第二运动部2043上，第二运动部2043可带动投影光学组件203在导轨2041上沿图中所示的圆弧方向运动。
图3B所示的头戴式显示设备200处于第一工作模式下，当头戴式显示设备200的佩戴者需要将观看的内容与其他用户进行分享时，需要进行头戴式显示设备200的工作模式的切换，从第一工作模式切换至第二工作模式。此时，需要通过头戴式显示设备200中的切换机构204的马达驱动第一运动部2042带动目视光学组件202沿导轨2041向下旋转，以及通过切换机构204的马达驱动第二运动部2043带动投影光学组件203沿导轨2041向上旋转，使得显示屏201发出的光最终入射至投影光学组件203，投影光学组件203出射的光在头戴式显示设备200外的预设距离处汇聚成像，即实现了头戴式显示设备200从第一工作模式到第二工作模式的切换。
反之，当头戴式显示设备200处于第二工作模式时，当头戴式显示设备200的佩戴者不再需要与其他用户共享画面，希望独自观看时，需要进行头戴式显示设备200的工作模式的切换，从第二工作模式切换至第一工作模式。此时，需要通过头戴式显示设备200中的切换机构204的马达驱动第一运动部2042带动目视光学组件202沿导轨2041向上旋转，以及通 过切换机构204的马达驱动第二运动部2043带动投影光学组件203沿导轨2041向下旋转，使得显示屏201发出的光最终入射至目视光学组件202，目视光学组件202出射平行光至头戴式显示设备200的佩戴者的眼睛，即实现了头戴式显示设备200从第二工作模式到第一工作模式的切换。
图3C示意性示出了根据本公开的又一个实施例的头戴式显示设备的结构示意图。
如图3C所示，该头戴式显示设备200包括显示屏201、目视光学组件202、投影光学组件203、导轨2041、第一运动部2042、第二运动部2043和马达(图中未示出)，第一运动部2042分为上下两个配合一起运动的子运动部，第二运动部2043分为上下两个配合一起运动的子运动部。此外，图3C中还示出了一个透镜205、一个半透半反镜206和一个投影屏幕207，前文中已详细说明过，在此不再赘述。
其中，导轨2041、第一运动部2042、第二运动部2043和马达构成了前文所述的切换机构204，导轨2041的导向方向是如图中所示的水平方向，第一运动部2042和第二运动部2043分别与马达连接，马达可以驱动第一运动部2042在导轨2041上沿图中所示的水平方向运动，马达可以驱动第二运动部2043在导轨2041上沿图中所示的水平方向运动。目视光学组件202固定于第一运动部2042上，第一运动部2042可带动目视光学组件202在导轨2041上沿图中所示的水平方向运动，投影光学组件203固定于第二运动部2043上，第二运动部2043可带动投影光学组件203在导轨2041上沿图中所示的水平方向运动。
图3C所示的头戴式显示设备200处于第二工作模式下，当头戴式显示设备200的佩戴者不再需要与其他用户共享画面，希望独自观看时，需要进行头戴式显示设备200的工作模式的切换，从第二工作模式切换至第一工作模式。此时，需要通过头戴式显示设备200中的切换机构204的马达驱动第一运动部2042带动目视光学组件202沿导轨2041水平向左运动，以及通过切换机构204的马达驱动第二运动部2043带动投影光学组件203沿导轨2041水平向右运动，使得显示屏201发出的光最终入射至目视光学组件202，目视光学组件202出射平行光至头戴式显示设备200的佩戴者的眼睛，即实现了头戴式显示设备200从第二工作模式到第一工作模式的切换。
反之，当头戴式显示设备200处于第一工作模式时，当头戴式显示设备200的佩戴者需要将观看的内容与其他用户进行分享时，需要进行头戴式显示设备200的工作模式的切换，从第一工作模式切换至第二工作模式。此时，需要通过头戴式显示设备200中的切换机构204的马达驱动第一运动部2042带动目视光学组件202沿导轨2041水平向右运动，以及通过切换机构204的马达驱动第二运动部2043带动投影光学组件203沿导轨2041水平向左运动，使得显示屏201发出的光最终入射至投影光学组件203，投影光学组件203出射的光在头戴 式显示设备200外的预设距离处汇聚成像，即实现了头戴式显示设备200从第一工作模式到第二工作模式的切换。
结合图3A～3C可知可以通过多种方式实现头戴式显示设备200的工作模式的切换，应当理解，图3A～3C仅示意性地通过几个具体的例子进行说明，在同样的思想下，其他方式也均可以实现同样的效果，在此不做限制。
在本公开的一个实施例中，头戴式显示设备还包括引导光学组件，其中，在第一工作模式下，显示屏发出的光经过引导光学组件后入射至目视光学组件，在第二工作模式下，显示屏发出的光经过引导光学组件后入射至投影光学组件。
再看图2A～2B所示的头戴式显示设备200，其中的透镜205和半透半反镜206构成了头戴式显示设备200中的引导光学组件，显示屏201发出的光首先入射至引导光学组件中的透镜205，透镜205出射的光入射至半透半反镜206，半透半反镜206用于对透镜205出射的光进行转向，使得光入射至目视光学组件202或投影光学组件203。
其中，引导光学组件能够合理地配置在目视光学组件202或投影光学组件203之前的光路，使得头戴式显示设备200中的光路能够更加节省空间，进而能够实现更小巧便捷的头戴式显示设备200。特别地，当引导光学组件中采用了半透半反镜206来起到光路转向作用而不是其他具有转向功能的转向镜，目视光学组件202向佩戴者的眼睛出射的光可以通过该半透半反镜206，而不需要在头戴式显示设备200特意为目视光学组件202出射的光留出无遮挡的传播空间，进而能够进一步压缩头戴式显示设备200所占空间。
需要说明的是，引导光学组件可以是透镜、透镜组、反射镜、透镜与反射镜的组合、透镜组与反射镜的组合、等等，在此不做限制。
在本公开的一个实施例中，头戴式显示设备200中的显示屏201的图像可以直接通过发光二极管(LED)、主动式矩阵液晶显示器(AM-LCD)、有机发光二极管(OLED)、液晶附硅(LCOS)等等获得，也可以通过光纤等传导方式间接获得。
图4示意性示出了根据本公开的一个实施例的用于头戴式显示设备的方法的流程图。
如图4所示，该方法包括操作S401～S403，用于说明前文中所示的头戴式显示设备实现工作模式切换的方案流程，其中，所述头戴式显示设备包括：显示屏、目视光学组件、投影光学组件和切换机构。
在操作S401，通过切换机构切换目视光学组件和投影光学组件的位置，以实现第一工作模式和第二工作模式的转换。
在操作S402，当在第一工作模式时，显示屏发出的光入射至目视光学组件，目视光学组件出射平行光至头戴式显示设备的佩戴者的眼睛。
在操作S403，当在第二工作模式时，显示屏发出的光入射至投影光学组件，投影光学组件出射的光在头戴式显示设备外的预设距离处汇聚成像。
可知，头戴式显示设备的第一工作模式对应于佩戴者单独观看的场景，第二工作模式对应于多个用户共享观看的场景，图4所示的方法使得头戴式显示设备200通过切换组件204的机械动作来实现上述私密和共享的场景的切换，符合用户在使用头戴式显示设备时的需求。
在本公开的一个实施例中，切换机构包括：导轨、第一运动部、第二运动部和马达。上述操作S401通过切换机构切换目视光学组件和投影光学组件的位置包括：通过马达驱动第一运动部沿导轨运动，使得第一运动部带动固定于第一运动部上的目视光学组件运动，并且/或者，通过马达驱动第二运动部沿导轨运动，使得第二运动部带动固定于第二运动部上的投影光学组件运动。可选地，导轨可以为圆弧导轨或直线导轨。
在本公开的一个实施例中，头戴式显示设备还包括引导光学组件，上述操作S402当在第一工作模式时，显示屏发出的光入射至目视光学组件，目视光学组件出射平行光至头戴式显示设备的佩戴者的眼睛包括：在第一工作模式下，显示屏发出的光经过引导光学组件后入射至所述目视光学组件。上述操作S403当在第二工作模式时，显示屏发出的光入射至投影光学组件，投影光学组件出射的光在头戴式显示设备外的预设距离处汇聚成像包括：在第二工作模式下，显示屏发出的光经过引导光学组件后入射至投影光学组件。
其中，引导光学组件包括透镜组和转向镜，透镜组包括一个或多个透镜，转向镜为反射镜或半透半反镜。显示屏发出的光入射至透镜组，透镜组出射的光入射至转向镜，转向镜用于对透镜组出射的光进行转向。
在本公开的一个实施例中，目视光学组件包括一个或多个透镜。也可以是，目视光学组件包括凹面反射镜。投影光学组件包括一个或多个透镜。
在本公开的一个实施例中，显示屏可以为以下任意一种或多种：LED显示屏、AM-LCD显示屏、OLED显示屏、LCOS显示屏；并且/或者，显示屏可通过光纤传导获得图像。
根据本公开的实施例，通过头戴式显示设备中的切换组件切换目视光学组件和投影光学组件的位置，以实现头戴式显示设备的第一工作模式和第二工作模式的切换，具体的各实施方式在上文中已有详细说明，可以参见上面参考图2A～图3C的描述，这里不再重复。
本领域技术人员可以理解，本公开的各个实施例和/或权利要求中记载的特征可以进行多种组合或/或结合，即使这样的组合或结合没有明确记载于本公开中。特别地，在不脱离本公开精神和教导的情况下，本公开的各个实施例和/或权利要求中记载的特征可以进行多种组合和/或结合。所有这些组合和/或结合均落入本公开的范围。
尽管已经参照本公开的特定示例性实施例示出并描述了本公开，但是本领域技术人员应 该理解，在不背离所附权利要求及其等同物限定的本公开的精神和范围的情况下，可以对本公开进行形式和细节上的多种改变。因此，本公开的范围不应该限于上述实施例，而是应该不仅由所附权利要求来进行确定，还由所附权利要求的等同物来进行限定。
Claims (10)
- 一种头戴式显示设备，包括：显示屏、目视光学组件、投影光学组件和切换机构；所述切换机构用于切换所述目视光学组件和所述投影光学组件的位置，以实现第一工作模式和第二工作模式的转换；在第一工作模式下，所述显示屏发出的光入射至所述目视光学组件，所述目视光学组件出射平行光至所述头戴式显示设备的佩戴者的眼睛；在第二工作模式下，所述显示屏发出的光入射至所述投影光学组件，所述投影光学组件出射的光在所述头戴式显示设备外的预设距离处汇聚成像。
- 根据权利要求1所述的头戴式显示设备，其中，所述切换机构包括：导轨、第一运动部、第二运动部和马达；所述第一运动部和所述第二运动部在所述马达的驱动下可沿导轨运动；所述目视光学组件固定于所述第一运动部上；所述投影光学组件固定于所述第二运动部上。
- 根据权利要求2所述的头戴式显示设备，其中，所述导轨为圆弧导轨或直线导轨。
- 根据权利要求1所述的头戴式显示设备，还包括引导光学组件，其中：在第一工作模式下，所述显示屏发出的光经过所述引导光学组件后入射至所述目视光学组件；在第二工作模式下，所述显示屏发出的光经过所述引导光学组件后入射至所述投影光学组件。
- 根据权利要求4所述的头戴式显示设备，其中：所述引导光学组件包括透镜组和转向镜；所述透镜组包括一个或多个透镜；所述转向镜为反射镜或半透半反镜；所述显示屏发出的光入射至所述透镜组，所述透镜组出射的光入射至所述转向镜，所述转向镜用于对所述透镜组出射的光进行转向。
- 根据权利要求1所述的头戴式显示设备，其中，所述目视光学组件包括一个或多个透镜。
- 根据权利要求1所述的头戴式显示设备，其中，所述目视光学组件包括凹面反射镜。
- 根据权利要求1所述的头戴式显示设备，其中，所述投影光学组件包括一个或多个透镜。
- 根据权利要求1所述的头戴式显示设备，其中：所述显示屏为以下任意一种或多种：LED显示屏、AM-LCD显示屏、OLED显示屏、LCOS显示屏；并且/或者所述显示屏可通过光纤传导获得图像。
- 一种用于头戴式显示设备的方法，所述头戴式显示设备包括：显示屏、目视光学组件、投影光学组件和切换机构；所述方法包括：通过所述切换机构切换所述目视光学组件和所述投影光学组件的位置，以实现第一工作模式和第二工作模式的转换，其中：在第一工作模式下，所述显示屏发出的光入射至所述目视光学组件，所述目视光学组件出射平行光至所述头戴式显示设备的佩戴者的眼睛；在第二工作模式下，所述显示屏发出的光入射至所述投影光学组件，所述投影光学组件出射的光在所述头戴式显示设备外的预设距离处汇聚成像。
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