CN117233968A - Head-mounted display device, control method and control device thereof - Google Patents
Head-mounted display device, control method and control device thereof Download PDFInfo
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- CN117233968A CN117233968A CN202311203710.XA CN202311203710A CN117233968A CN 117233968 A CN117233968 A CN 117233968A CN 202311203710 A CN202311203710 A CN 202311203710A CN 117233968 A CN117233968 A CN 117233968A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 142
- 238000002834 transmittance Methods 0.000 claims description 23
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- 239000000758 substrate Substances 0.000 description 10
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- 208000001491 myopia Diseases 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000004379 myopia Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004438 eyesight Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 201000010041 presbyopia Diseases 0.000 description 2
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Abstract
The embodiment of the application provides a head-mounted display device, a control method and a control device thereof, and relates to the technical field of wearable devices, wherein the head-mounted display device comprises: a display device and a lens; the lens comprises an inner side and an outer side, a projection area is arranged on the outer side, a display part of the display device faces the projection area, a first liquid crystal light regulating sheet is arranged on the surface, facing the projection area, of the display part, a second liquid crystal light regulating sheet is arranged on the inner side, and light rays emitted by the display part can sequentially penetrate through the first liquid crystal light regulating sheet, the lens and the second liquid crystal light regulating sheet and then are projected to eyes of a wearer of the head-mounted display device.
Description
Technical Field
The application relates to the technical field of wearable equipment, in particular to head-mounted display equipment, and a control method and a control device thereof.
Background
Referring to fig. 1, in the related art, an AR/VR head mounted display apparatus generally includes a display device 210 and a lens 220. The wearer of the AR/VR head mounted display device can view the external picture through the lens 220. Moreover, the display device 210 may project a virtual image onto the lens 220 for viewing by the wearer.
Since the light intensities of the light rays emitted from the display device 210 at different angles are different, the light intensity is generally high at a small viewing angle, and the light intensity is small at a large viewing angle, which causes the light rays projected onto the lens 220 and transmitted to the eyes of the wearer to have different intensities, resulting in uneven brightness of the image seen by the human eyes.
Disclosure of Invention
The embodiment of the application provides a head-mounted display device, a control method and a control device thereof, which are used for solving the problems in the background technology.
In a first aspect, an embodiment of the present application provides a head-mounted display device.
The head-mounted display device provided by the embodiment of the application comprises: a display device and a lens; the lens comprises an inner side and an outer side, a projection area is arranged on the outer side, a display part of the display device faces the projection area, a first liquid crystal light regulating sheet is arranged on the surface, facing the projection area, of the display part, a second liquid crystal light regulating sheet is arranged on the inner side, and light rays emitted by the display part can sequentially penetrate through the first liquid crystal light regulating sheet, the lens and the second liquid crystal light regulating sheet and then are projected to eyes of a wearer of the head-mounted display device.
Optionally, the first liquid crystal dimming chip comprises a first electrode layer, a first liquid crystal layer and a second electrode layer which are stacked; at least one of the first electrode layer and the second electrode layer is formed by splicing a plurality of first sub-electrodes distributed in a rectangular array.
Optionally, the second liquid crystal dimming chip comprises a third electrode layer, a second liquid crystal layer and a fourth electrode layer which are stacked; at least one of the third electrode layer and the fourth electrode layer is formed by splicing a plurality of second sub-electrodes distributed in a rectangular array.
In a second aspect, an embodiment of the present application provides a control method applied to any one of the head-mounted display devices provided in the embodiment of the present application.
The control method provided by the embodiment of the application comprises the following steps: the light emitting angle of the first liquid crystal dimming sheet is adjusted so that the light emitted by the display part is gradually diverged from the center to the outside, and the light emitting angle of the second liquid crystal dimming sheet is correspondingly projected to the projection area, so that the light projected to the projection area is gradually converged from the center to the outside, and correspondingly projected to the eyes of the wearer.
Optionally, the first liquid crystal dimming chip comprises a first electrode layer, a first liquid crystal layer and a second electrode layer which are stacked; at least one of the first electrode layer and the second electrode layer is formed by splicing a plurality of first sub-electrodes distributed in a rectangular array, and the light emitting angle of the first liquid crystal dimming sheet is adjusted, so that the light emitted by the display part is gradually diverged from the center to the outside and correspondingly projected to the projection area, and the method comprises the following steps: based on the outline size of the display part, the outline size of the projection area and the distance between the display part and the projection area, the voltage of each first sub-electrode is adjusted so as to adjust the light emitting angle of the first liquid crystal dimming sheet, so that the light emitted by the display part is gradually dispersed from the center to the outside and correspondingly projected to the projection area.
Optionally, the second liquid crystal dimming chip comprises a third electrode layer, a second liquid crystal layer and a fourth electrode layer which are stacked; at least one of the third electrode layer and the fourth electrode layer is formed by splicing a plurality of second sub-electrodes distributed in a rectangular array, and the light-emitting angle of the second liquid crystal dimming sheet is adjusted, so that the light projected to the projection area is gradually condensed and converged from the center to the outside, and correspondingly projected to the eyes of the wearer, and the method comprises the following steps: based on the outline size of the projection area and the distance between the projection area and the eyes of the wearer, the voltage of each second sub-electrode is adjusted so as to adjust the light emergent angle of the second liquid crystal dimming sheet, so that the light projected to the projection area is gradually condensed and converged from the center to the outside, and correspondingly projected to the eyes of the wearer.
Optionally, the control method further includes: the light intensity parameters of the ambient light emitted to the lenses are determined, and the light transmittance of the first liquid crystal dimming sheet and the light transmittance of the second liquid crystal dimming sheet are adjusted based on the light intensity parameters, so that the intensity is in a first preset interval after the light emitted by the display device sequentially penetrates through the first liquid crystal dimming sheet and the second liquid crystal dimming sheet, and the intensity is in a second preset interval after the ambient light penetrates through the second liquid crystal dimming sheet.
Optionally, the control method further includes: acquiring diopters of eyes of the wearer, and adjusting focal length of the second liquid crystal dimming sheet based on the diopters.
In a third aspect, an embodiment of the present application provides a control apparatus applied to any one of the head-mounted display devices provided in the embodiment of the present application.
The control device provided by the embodiment of the application comprises: the adjusting unit is used for adjusting the light emitting angle of the first liquid crystal dimming sheet so that the light emitted by the display part is gradually diverged from the center to the outside and correspondingly projected to the projection area, and adjusting the light emitting angle of the second liquid crystal dimming sheet so that the light projected to the projection area is gradually converged from the center to the outside and correspondingly projected to the eyes of the wearer.
Optionally, the control device further includes: the adjusting unit is used for adjusting the light transmittance of the first liquid crystal dimming sheet and the light transmittance of the second liquid crystal dimming sheet based on the light intensity parameters, so that the intensity of the light emitted by the display device is in a first preset interval after sequentially penetrating through the first liquid crystal dimming sheet and the second liquid crystal dimming sheet, and the intensity of the ambient light is in a second preset interval after penetrating through the second liquid crystal dimming sheet.
The above at least one technical scheme adopted by the embodiment of the application can achieve the following beneficial effects:
in the embodiment of the application, the first liquid crystal dimming sheet is arranged on the surface of the display part of the display device, so that the arrangement state of the liquid crystal of the first liquid crystal dimming sheet can be adjusted based on the principle of the electro-optic effect of the liquid crystal, and the effect of adjusting the emergent angle of the light transmitted through the liquid crystal is achieved, so that the light emitted by the display part of the display device can be correspondingly projected to each region of the projection region. Further, the uniformity of the light projected onto the projection area can be improved by projecting the light emitted from the display unit of the display device onto each area of the projection area.
The second liquid crystal dimming sheet is arranged on the inner side of the lens, so that the arrangement state of the liquid crystal of the second liquid crystal dimming sheet can be adjusted based on the principle of the electro-optic effect of the liquid crystal, and the effect of adjusting the focal length of the second liquid crystal dimming sheet is achieved. Thus, the second liquid crystal dimming sheet can function like a near-vision lens or a far-vision lens. In this way, the wearer can see the picture presented by the head-mounted display device more clearly without wearing myopia or presbyopia.
In addition, the effect of adjusting the light transmittance of the first liquid crystal dimming sheet and the second liquid crystal dimming sheet can be achieved by adjusting the liquid crystal arrangement states of the first liquid crystal dimming sheet and the second liquid crystal dimming sheet. Further, the intensity of the light emitted from the display device and directed to the eyes of the wearer can be adjusted by adjusting the light transmittance of the first liquid crystal dimming sheet and the second liquid crystal dimming sheet; the light intensity of the light emitted to the eyes of the wearer in the environment can be adjusted by adjusting the light transmittance of the second liquid crystal dimming sheet, so that the picture displayed by the display device and the picture of the ambient light are emitted to the eyes of the wearer with proper intensity.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram of a head mounted display device in the related art;
fig. 2 is a schematic diagram of a head-mounted display device according to an embodiment of the present application;
fig. 3 is a schematic diagram of a first lc dimming sheet according to an embodiment of the present application, which illustrates a situation that an electrode layer of the first lc dimming sheet is in a non-energized state;
fig. 4 is a schematic diagram of a first lcd according to an embodiment of the present application, which illustrates a situation in which an electrode layer of the first lcd is in an energized state;
FIG. 5 is a schematic diagram of a second electrode layer according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a display device and a first LCD according to an embodiment of the present application;
FIG. 7 is a schematic diagram of a lens and a second LC dimming sheet according to an embodiment of the present application;
FIG. 8 is a schematic diagram of a second liquid crystal light modulator matching eyes of a myopic wearer in accordance with an embodiment of the present application;
FIG. 9 is a schematic diagram of a second liquid crystal light-adjusting sheet matching eyes of a far vision wearer according to an embodiment of the present application;
fig. 10 is a flowchart of a control method of a head-mounted display device according to an embodiment of the present application.
Reference numerals illustrate:
100-a head mounted display device; 110-a display device; 120-lens; 130-a first liquid crystal dimming sheet; 131-a first electrode layer; 132-a first liquid crystal layer; 133-a second electrode layer; 1331-a first sub-electrode; 134-a first substrate; 135-a second substrate; 140-a second liquid crystal dimming sheet; 210-a display device; 220-lenses.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Furthermore, although terms used in the present application are selected from publicly known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.
Furthermore, it is required that the present application is understood, not simply by the actual terms used but by the meaning of each term lying within.
The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.
The embodiment of the application provides a head-mounted display device. Referring to fig. 2, a head mounted display device 100 provided in an embodiment of the present application includes: a display device 110 and a lens 120.
The lens 120 includes an inner side and an outer side. The outer side of the lens 120 has a projection area, and the display part of the display device 110 faces the projection area. Thus, the display device 110 can project a picture toward the projection area outside the lens 120. The surface of the display part facing the projection area is provided with a first liquid crystal dimming sheet 130, the inner side is provided with a second liquid crystal dimming sheet 140, and light rays emitted by the display part can sequentially penetrate through the first liquid crystal dimming sheet 130, the lens 120 and the second liquid crystal dimming sheet 140 and then be projected to eyes of a wearer of the head-mounted display device 100.
The inner side of the lens 120 refers to the side close to the eye of the wearer, and the outer side of the lens refers to the side of the lens 120 away from the eye of the wearer. The inner and outer sides of the lens 120 can be understood by those skilled in the art based on common general knowledge in the art, and thus will not be further explained herein. It should be noted that the display device 110 may be opposite to the lens 120, and the display device 110 may be located at a side of the lens 120. When the display device 110 is located laterally to the lens 120, the display device 110 may project a screen onto a projection area outside the lens 120 in an oblique projection manner.
In this way, referring to fig. 3, according to the solution provided by the embodiment of the present application, since the surface of the display portion of the display device 110 is provided with the first liquid crystal dimming sheet 130, the arrangement state of the liquid crystal of the first liquid crystal dimming sheet 130 can be adjusted based on the principle of the electro-optic effect of the liquid crystal, so as to achieve the effect of adjusting the exit angle of the light transmitted through the liquid crystal, so that the light emitted by the display portion of the display device 110 can be correspondingly projected to each area of the projection area. Further, the uniformity of the light projected onto the projection area can be improved by projecting the light emitted from the display unit of the display device 110 onto each area of the projection area.
Referring to fig. 4 to 6, according to the solution provided in the embodiment of the present application, since the second lc dimming sheet 140 is disposed on the inner side of the lens 120, the alignment state of the liquid crystals of the second lc dimming sheet 140 can be adjusted based on the principle of the electro-optic effect of the liquid crystals, so as to achieve the effect of adjusting the focal length of the second lc dimming sheet 140. Thus, the second lc dimming sheet 140 is enabled to function like a near-vision lens or a far-vision lens. In this way, the wearer can see the picture presented by the head mounted display device 100 more clearly without wearing myopia or presbyopia.
In addition, the effect of adjusting the light transmittance of the first liquid crystal light adjusting sheet 130 and the second liquid crystal light adjusting sheet 140 can be achieved by adjusting the liquid crystal alignment state of the first liquid crystal light adjusting sheet 130 and the second liquid crystal light adjusting sheet 140. Further, the intensity of the light emitted from the display device 110 and directed to the eyes of the wearer may be adjusted by adjusting the light transmittance of the first and second lc light-modulating sheets 130 and 140; the intensity of the light emitted to the eyes of the wearer in the environment can be adjusted by adjusting the light transmittance of the second lc dimming sheet 140, so that the picture displayed by the display device 110 and the picture of the ambient light are emitted to the eyes of the wearer with a proper intensity.
It should be noted that, in the related art, when the deflection angle of the light emitted from the edge of the display device is too large, the light emitted from the edge of the display device will be projected to the outside of the projection area of the lens, and the light projected to the outside of the projection area will not smoothly enter the eyes of the wearer. Thus, light rays emitted from the edges of the display device are lost. Referring to fig. 6, according to the solution provided by the embodiment of the present application, the first lc dimming sheet 130 may be used to deflect the light emitted from the edge of the display device 110 at the viewing angle, so that the light emitted from the edge of the display device 110 after being deflected by the first lc dimming sheet 130 can be smoothly projected onto the projection area of the lens 120, thereby reducing the loss of the light emitted from the display device 110.
In some embodiments, the head mounted display device 100 is of a similar appearance to glasses, and the head mounted display device 100 further includes a frame to which the display apparatus 110 and the lenses 120 are disposed. Of course, in other embodiments, the head mounted display device 100 may have other shapes, which are not listed here.
Referring to fig. 7 to 9, in some embodiments, the first liquid crystal dimming sheet 130 includes a first electrode layer 131, a first liquid crystal layer 132, and a second electrode layer 133, which are stacked. Referring to fig. 5, at least one of the first electrode layer 131 and the second electrode layer 133 is formed by splicing a plurality of first sub-electrodes 1331 distributed in a rectangular array. In this way, by adjusting the power supply parameters of the first sub-electrodes 1331, the alignment state of the liquid crystal in the liquid crystal region corresponding to the first sub-electrodes 1331 is adjusted, and the light emitting angle of the first liquid crystal dimming sheet 130 is adjusted.
It should be noted that, referring to fig. 7, the first lcd 130 may further include a first substrate 134 and a second substrate 135. The first substrate 134 is disposed on a side of the first electrode layer 131 facing away from the first liquid crystal layer 132, and the second substrate 135 is disposed on a side of the second electrode layer 133 facing away from the first liquid crystal layer 132.
In some embodiments, the second lc dimming sheet 140 may be disposed with reference to the configuration of the first lc dimming sheet 130. Illustratively, the second liquid crystal dimming sheet 140 includes a third electrode layer, a second liquid crystal layer, and a fourth electrode layer which are stacked. At least one of the third electrode layer and the fourth electrode layer is formed by splicing a plurality of second sub-electrodes distributed in a rectangular array. In this way, the effect of adjusting the alignment state of the liquid crystal in the liquid crystal region corresponding to the second sub-electrode can be achieved by adjusting the power supply parameter of each second sub-electrode, thereby achieving the effect of adjusting the light emitting angle of the second liquid crystal dimming sheet 140.
It should be noted that the second lc dimming sheet 140 may further include a third substrate and a fourth substrate. The third substrate is arranged on one side of the third electrode layer, which is away from the second liquid crystal layer, and the fourth substrate is arranged on one side of the fourth electrode layer, which is away from the second liquid crystal layer.
Of course, in other embodiments, the principles of adjusting the alignment states of the liquid crystals of the liquid crystal dimming sheets in the related art can be used to adjust the alignment states of the liquid crystals of the first liquid crystal dimming sheet 130 and the second liquid crystal dimming sheet 140. Since the technology of adjusting the liquid crystal alignment state of the liquid crystal dimming sheet is mature, specific details of the adjustment of the first liquid crystal layer 132 and the second liquid crystal dimming sheet 140 will not be described here.
The embodiment of the application provides a control method applied to any one of the head-mounted display devices 100 provided in the embodiment of the application. Referring to fig. 10, a control method applied to a head-mounted display device according to an embodiment of the present application includes:
in step 310, the light emitting angle of the first lc light adjusting sheet is adjusted so that the light emitted from the display portion is gradually diverged from the center to the outside and is correspondingly projected to the projection area.
In the embodiment of the present application, the light emitting angle of the first lcd 130 can be adjusted, so that the light emitted from the display portion is gradually diverged from the center to the outside and is correspondingly projected to the projection area.
For example, the display section may be divided into a plurality of sub-display sections, and the projection area may be divided into a plurality of sub-projection areas, wherein the sub-projection areas are in one-to-one correspondence with the sub-display sections. For example, the display section may be divided into M rows and N columns of sub-display sections. Correspondingly, the projection area may be divided into M rows and N columns of sub-projection areas, wherein the sub-projection areas are in one-to-one correspondence with the sub-display sections. Note that, in the case where at least one of the first electrode layer 131 and the second electrode layer 133 is formed by splicing a plurality of first sub-electrodes 1331 distributed in a rectangular array, the plurality of first sub-electrodes 1331 may be arranged in M rows and N columns. Of course, in other embodiments, in order to further improve the adjustment accuracy of the liquid crystal layer in each region of the first lc dimming sheet 130, each of the first sub-electrodes 1331 may be further thinned. Illustratively, each of the first sub-electrodes 1331 may be formed by a plurality of electrode units.
Further, the light emitting angle of the corresponding region of the first lc dimming sheet 130 may be adjusted based on the relative positions of the corresponding sub-display portion and the sub-projection region, so that the light of the sub-display portion is correspondingly projected to the sub-projection region. For example, the liquid crystal layer of the first liquid crystal light adjusting sheet 130 corresponding to the 1 st row and 1 st column sub display section may be adjusted based on the relative orientation and relative position between the 1 st row and 1 st column sub display section and the 1 st row and 1 st column sub projection section, so that the light emitted from the 1 st row and 1 st column sub display section after being adjusted by the first liquid crystal light adjusting sheet 130 can be projected to the 1 st row and 1 st column sub projection section. Therefore, the uniformity of the light projected to the projection area can be improved by the corresponding projection mode of the sub-display part and the sub-projection area. In addition, the uniformity of the light projected to the projection area can be further improved by adjusting the light transmittance of the area corresponding to each sub-display part of the first liquid crystal dimming sheet.
Step 320, adjusting the light emitting angle of the second lc dimming sheet, so that the light projected onto the projection area gradually converges from the center to the outside, and is correspondingly projected onto the eyes of the wearer.
In the embodiment of the present application, the light emitting angle of the second lc light adjusting sheet 140 can be adjusted, so that the light projected onto the projection area gradually converges from the center to the outside, and is correspondingly projected onto the eyes of the wearer. For example, the light emitting angle of the second liquid crystal light adjusting sheet 140 can be adjusted by referring to the light emitting angle adjusting scheme of the first liquid crystal light adjusting sheet 130, and thus, the light emitting angle adjusting scheme of the second liquid crystal light adjusting sheet 140 is not further explained here.
In some embodiments, when the first lc light-adjusting sheet 130 includes a first electrode layer 131, a first lc layer 132 and a second electrode layer 133 that are stacked, and at least one of the first electrode layer 131 and the second electrode layer 133 is formed by splicing a plurality of first sub-electrodes 1331 distributed in a rectangular array, the adjusting the light-emitting angle of the first lc light-adjusting sheet 130 so as to gradually diverge the light emitted by the display portion from the center to the outside, and correspondingly projects the light to the projection area includes: based on the outline size of the display portion, the outline size of the projection area, and the distance between the display portion and the projection area, the voltage of each first sub-electrode 1331 is adjusted to adjust the light emitting angle of the first liquid crystal dimming sheet 130, so that the light emitted by the display portion is gradually diverged from the center to the outside and is correspondingly projected to the projection area.
In some embodiments, in the case that the second lc light-adjusting sheet 140 includes a third electrode layer, a second lc layer and a fourth electrode layer that are stacked, at least one of the third electrode layer and the fourth electrode layer is formed by splicing a plurality of second sub-electrodes distributed in a rectangular array, the foregoing adjusting the light-emitting angle of the second lc light-adjusting sheet 140 to make the light projected onto the projection area gradually converge from the center to the outside, and correspondingly project onto the eyes of the wearer includes: based on the outline size of the projection area and the distance between the projection area and the eyes of the wearer, the voltage of each second sub-electrode is adjusted to adjust the light emitting angle of the second liquid crystal dimming sheet 140, so that the light projected to the projection area is gradually condensed and converged from the center to the outside, and is correspondingly projected to the eyes of the wearer.
In some embodiments, the control method applied to the head-mounted display device further includes: determining a light intensity parameter of ambient light directed to the lens 120; the light transmittance of the first lc light adjusting sheet 130 and the light transmittance of the second lc light adjusting sheet 140 are adjusted based on the light intensity parameters, so that the intensity of the light emitted by the display device 110 after passing through the first lc light adjusting sheet 130 and the second lc light adjusting sheet 140 sequentially is in a first preset interval, and the intensity of the ambient light after passing through the second lc light adjusting sheet 140 is in a second preset interval.
For example, an ambient light sensor may be utilized to detect a light intensity parameter of ambient light. For example, in the case where the intensity of the ambient light is weak, the light transmittance of the first lc dimming sheet 130 may be appropriately reduced to reduce the light intensity of the display device 110 emitted to the eyes of the wearer, and the light transmittance of the second lc dimming sheet 140 may be appropriately increased to enable the wearer to see the external real picture. Under the condition that the intensity of the ambient light is stronger, the light transmittance of the first liquid crystal dimming sheet 130 can be properly improved to improve the light intensity of the display device 110 emitted to eyes of the wearer, and the light transmittance of the second liquid crystal dimming sheet 140 can be properly reduced to enable the wearer to see the picture displayed by the display device 110 clearly, and the light emitted to eyes of the wearer can be prevented from being too dazzling, so that the effect of protecting eyes of the wearer is achieved.
It should be noted that, the first preset interval refers to an interval where the light emitted by the display device 110 can make the human eye more comfortable, and the second preset interval refers to an interval where the ambient light irradiates the human eye, so that the human eye more comfortable. The specific value ranges of the first preset interval and the second preset interval can be obtained according to experiments, and will not be explained here.
In some embodiments, the control method applied to the head-mounted display device further includes: acquiring diopters of eyes of a wearer; the focal length of the second lc dimming sheet 140 is adjusted based on the diopter.
Illustratively, the wearer may input the diopter of the eyes of the wearer based on the human-computer interaction system of the head-mounted display device 100, and thus, the focal length of the second liquid crystal dimming sheet 140 may be adjusted based on the diopter, so that the wearer can see the picture presented by the head-mounted display device 100 more clearly without wearing the myopia glasses or presbyopic glasses. It should be noted that diopters are generally referred to as near vision power or far vision power.
The embodiment of the application provides a control device applied to any one of the head-mounted display devices 100 provided in the embodiment of the application. The control device applied to the head-mounted display device 100 provided by the embodiment of the application comprises: the adjusting unit is configured to adjust the light emitting angle of the first lc light adjusting sheet 130 so that the light emitted from the display portion gradually diverges from the center to the outside and is correspondingly projected to the projection area, and adjust the light emitting angle of the second lc light adjusting sheet 140 so that the light projected to the projection area gradually converges from the center to the outside and is correspondingly projected to the eyes of the wearer.
In some embodiments, the control apparatus applied to the head-mounted display device 100 provided in the embodiments of the present application further includes: an ambient light detector for determining a light intensity parameter of ambient light directed to the lens 120. In addition, the adjusting unit is further configured to adjust the light transmittance of the first lc light adjusting piece 130 and the light transmittance of the second lc light adjusting piece 140 based on the light intensity parameter of the ambient light determined by the ambient light detector, so that the intensity of the light emitted by the display device 110 after passing through the first lc light adjusting piece 130 and the second lc light adjusting piece 140 sequentially is in a first preset interval, and the intensity of the ambient light after passing through the second lc light adjusting piece 140 is in a second preset interval.
In some embodiments, the control apparatus applied to the head-mounted display device 100 provided in the embodiments of the present application further includes: acquisition means for acquiring the diopter of the eye of the wearer. In addition, the adjusting unit is further configured to adjust the focal length of the second lc dimming sheet 140 based on the diopter acquired by the acquiring means.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the principles and spirit of the embodiments of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A head-mounted display device, comprising: a display device (110) and a lens (120);
the lens (120) comprises an inner side and an outer side, a projection area is arranged on the outer side, a display part of the display device (110) faces the projection area, a first liquid crystal dimming sheet (130) is arranged on the surface of the display part facing the projection area, a second liquid crystal dimming sheet (140) is arranged on the inner side, and light rays emitted by the display part can sequentially penetrate through the first liquid crystal dimming sheet (130), the lens (120) and the second liquid crystal dimming sheet (140) and then are projected to eyes of a wearer of the head-mounted display device.
2. The head-mounted display device according to claim 1, wherein the first liquid crystal dimming sheet (130) includes a first electrode layer (131), a first liquid crystal layer (132) and a second electrode layer (133) which are stacked; at least one of the first electrode layer (131) and the second electrode layer (133) is formed by splicing a plurality of first sub-electrodes (1331) distributed in a rectangular array.
3. The head-mounted display device according to claim 1, wherein the second liquid crystal dimming sheet (140) includes a third electrode layer, a second liquid crystal layer, and a fourth electrode layer which are stacked; at least one of the third electrode layer and the fourth electrode layer is formed by splicing a plurality of second sub-electrodes distributed in a rectangular array.
4. A control method applied to the head-mounted display device of claim 1, characterized in that the control method comprises:
adjusting the light emitting angle of the first liquid crystal dimming sheet (130) so that the light emitted by the display part is gradually dispersed from the center to the outside and correspondingly projected to the projection area;
the light emitting angle of the second liquid crystal dimming sheet (140) is adjusted so that the light projected to the projection area gradually condenses and converges from the center to the outside, and is correspondingly projected to the eyes of the wearer.
5. The control method according to claim 4, wherein the first liquid crystal dimming sheet (130) includes a first electrode layer (131), a first liquid crystal layer (132), and a second electrode layer (133) that are stacked; at least one of the first electrode layer (131) and the second electrode layer (133) is formed by splicing a plurality of first sub-electrodes (1331) distributed in a rectangular array;
the adjusting the light emitting angle of the first liquid crystal dimming sheet (130) so that the light emitted by the display part gradually diverges from the center to the outside and correspondingly projects to the projection area comprises:
based on the outline size of the display part, the outline size of the projection area and the distance between the display part and the projection area, the voltage of each first sub-electrode (1331) is adjusted so as to adjust the light emitting angle of the first liquid crystal dimming sheet (130), so that the light emitted by the display part is gradually dispersed from the center to the outside and correspondingly projected to the projection area.
6. The control method according to claim 4, wherein the second liquid crystal dimming sheet (140) includes a third electrode layer, a second liquid crystal layer, and a fourth electrode layer which are stacked; at least one of the third electrode layer and the fourth electrode layer is formed by splicing a plurality of second sub-electrodes distributed in a rectangular array;
the adjusting the light emitting angle of the second liquid crystal dimming sheet (140) so as to gradually concentrate and converge the light projected to the projection area from the center to the outside, and correspondingly project to the eyes of the wearer, comprising:
based on the outline size of the projection area and the distance between the projection area and the eyes of the wearer, the voltage of each second sub-electrode is adjusted to adjust the light emergent angle of the second liquid crystal dimming sheet (140), so that the light projected to the projection area is gradually condensed and converged from the center to the outside, and correspondingly projected to the eyes of the wearer.
7. The control method according to any one of claims 4 to 6, characterized in that the control method further comprises:
determining a light intensity parameter of ambient light directed to the lens (120);
and adjusting the light transmittance of the first liquid crystal dimming sheet (130) and the light transmittance of the second liquid crystal dimming sheet (140) based on the light intensity parameters, so that the intensity is in a first preset interval after the light rays emitted by the display device (110) sequentially penetrate through the first liquid crystal dimming sheet (130) and the second liquid crystal dimming sheet (140), and the intensity is in a second preset interval after the ambient light penetrates through the second liquid crystal dimming sheet (140).
8. The control method according to any one of claims 4 to 6, characterized in that the control method further comprises:
obtaining the diopter of the wearer's eye;
the focal length of the second liquid crystal dimming sheet (140) is adjusted based on the diopter.
9. A control apparatus applied to the head-mounted display device of any one of claims 1 to 3, characterized in that the control apparatus comprises:
the adjusting unit is used for adjusting the light emitting angle of the first liquid crystal dimming sheet (130) so that the light emitted by the display part is gradually diverged from the center to the outside and correspondingly projected to the projection area, and adjusting the light emitting angle of the second liquid crystal dimming sheet (140) so that the light projected to the projection area is gradually converged from the center to the outside and correspondingly projected to the eyes of the wearer.
10. The control device according to claim 9, characterized in that the control device further comprises: an ambient light detector for determining a light intensity parameter of ambient light directed to the lens (120);
the adjusting unit is further configured to adjust the light transmittance of the first liquid crystal dimming sheet (130) and the light transmittance of the second liquid crystal dimming sheet (140) based on the light intensity parameter, so that the intensity of the light emitted by the display device (110) is in a first preset interval after sequentially passing through the first liquid crystal dimming sheet (130) and the second liquid crystal dimming sheet (140), and the intensity of the ambient light is in a second preset interval after passing through the second liquid crystal dimming sheet (140).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311203710.XA CN117233968A (en) | 2023-09-18 | 2023-09-18 | Head-mounted display device, control method and control device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311203710.XA CN117233968A (en) | 2023-09-18 | 2023-09-18 | Head-mounted display device, control method and control device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117233968A true CN117233968A (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311203710.XA Pending CN117233968A (en) | 2023-09-18 | 2023-09-18 | Head-mounted display device, control method and control device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117233968A (en) |
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2023
- 2023-09-18 CN CN202311203710.XA patent/CN117233968A/en active Pending
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