CN113376899A - Virtual reality glasses with adjustable luminousness - Google Patents
Virtual reality glasses with adjustable luminousness Download PDFInfo
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- CN113376899A CN113376899A CN202110710554.0A CN202110710554A CN113376899A CN 113376899 A CN113376899 A CN 113376899A CN 202110710554 A CN202110710554 A CN 202110710554A CN 113376899 A CN113376899 A CN 113376899A
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- linearly polarized
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- 239000011521 glass Substances 0.000 title claims abstract description 135
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 134
- 238000002834 transmittance Methods 0.000 claims abstract description 68
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims description 26
- 230000005684 electric field Effects 0.000 claims description 24
- 230000010287 polarization Effects 0.000 claims description 24
- 230000003190 augmentative effect Effects 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical group [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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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
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/101—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having an electro-optical light valve
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/12—Polarisers
-
- 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
- G02B2027/0178—Eyeglass type
Abstract
The invention provides a pair of virtual reality glasses with adjustable light transmittance, which is applied to the technical field of near-to-eye display equipment, and comprises liquid crystals (1), wherein one side of the liquid crystals (1) is provided with transparent electrode glass I (2), the other side of the liquid crystals (1) is provided with transparent electrode glass II (3), the outer side of the transparent electrode glass I (2) is provided with a polaroid I (4), the outer side of the transparent electrode glass II (3) is provided with a polaroid II (5), and the light transmission axis of the polaroid I (4) is set into a structure which is vertically or parallelly arranged with the light transmission axis of the polaroid II (5). The problems of low contrast, low color gamut and limited application scene caused by AR/MR light transmission are solved, and the overall performance is improved.
Description
Technical Field
The invention belongs to the technical field of near-to-eye display equipment, and particularly relates to virtual reality glasses with adjustable light transmittance.
Background
Near-eye display technology has been widely used in the fields of education, industry, medical care, gaming, entertainment, driving, military, etc., including Virtual Reality (VR), Augmented Reality (AR), Mixed Reality (MR), etc. Because both the AR and MR must interact with the real environment, both the real external world and the virtual information must be seen, and the imaging system cannot be kept in front of the line of sight, the AR and MR glasses require a certain amount of light transmission, and most use projection display technology. The light transmission causes low display contrast, low color gamut and unreal and natural display, and the light transmission is too low, so that light in the real world hardly enters eyes through the lens and the real world cannot be seen clearly; too strong light transmission may result in light leakage from the display and insufficient brightness of the virtual image. To alleviate this problem, some AR/MRs use optical designs such as curved lenses (birdbath) to block the ambient light from entering, or use tinted lenses to increase the relative brightness of the optical module, which reduces the light transmittance of the optical module. The current AR/MR cannot see the real world clearly in a dark light environment, and cannot see a virtual image clearly in an outdoor strong light environment.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a simple structure, through developing brand-new liquid crystal printing opacity piece structure that parts such as polaroid and liquid crystal constitute to and based on the AR MR glasses of above-mentioned liquid crystal printing opacity piece, solve low contrast, low colour gamut, the limited problem of application scene that the AR MR light transmissivity leads to, improve the virtual reality glasses that the luminousness of wholeness ability is adjustable.
To solve the technical problems, the invention adopts the technical scheme that:
the invention relates to virtual reality glasses with adjustable light transmittance, which comprise liquid crystals, wherein one side of the liquid crystals is provided with transparent electrode glass I, the other side of the liquid crystals is provided with transparent electrode glass II, the outer side of the transparent electrode glass I is provided with a polaroid I, the outer side of the transparent electrode glass II is provided with a polaroid II, and the light transmission axis of the polaroid I is in a structure which is vertically or parallelly arranged with the light transmission axis of the polaroid II.
The polaroid I, the transparent electrode glass I, the liquid crystal, the transparent electrode glass II and the polaroid II form a liquid crystal light-transmitting sheet.
The liquid crystal light-transmitting piece is arranged to be of a structure capable of being pasted on the spectacle lenses, and when the liquid crystal light-transmitting piece is pasted on the spectacle lenses, the polaroid II is arranged to be of a structure capable of being pasted on the surfaces of the spectacle lenses.
The liquid crystal light-transmitting piece is set to be of a structure capable of being stuck on the lens curved surface protective glasses, and when the liquid crystal light-transmitting piece is stuck on the lens curved surface protective glasses, the polaroid II is set to be of a structure capable of being stuck on the surface of the lens curved surface protective glasses.
Virtual reality glasses with adjustable luminousness include the spectacle-frame, set up two glasses lenses on the spectacle-frame.
When the liquid crystal light-transmitting pieces are adhered to the glasses lenses, each glasses lens is provided with a structure capable of adhering one liquid crystal light-transmitting piece.
When the liquid crystal light-transmitting sheet is adhered to the lens curved surface protective glasses, the lens curved surface protective glasses 8 are provided with a structure capable of adhering the whole liquid crystal light-transmitting sheet.
When the transmission axis of the polarizer I and the transmission axis of the polarizer II are vertically arranged, natural light is transmitted through the polarizer I and converted into linearly polarized light, when no external electric field exists, the linearly polarized light transmitted through the polarizer I is twisted by the twisted liquid crystal molecules by 90 degrees, and the linearly polarized light with the polarization plane twisted by 90 degrees is transmitted through the polarizer II 5 vertical to the polarizer I and appears bright; when an external electric field is applied, the liquid crystal is vertically arranged, linearly polarized light directly penetrates through the liquid crystal, the change of a polarization surface is avoided, the polarizer II cannot penetrate through, and the appearance is dark.
When the transmission axis of the polarizer I and the transmission axis of the polarizer II are arranged in parallel, natural light is transmitted through the polarizer I and converted into linearly polarized light, when no external electric field exists, the linearly polarized light transmitted through the polarizer I is twisted by the twisted liquid crystal molecules by 90 degrees, and the linearly polarized light with the polarization plane twisted by 90 degrees cannot transmit the polarizer II parallel to the polarizer I and appears dark; when an external electric field is applied, the liquid crystal is vertically arranged, linearly polarized light directly penetrates through the liquid crystal, the change of a polarization surface does not occur, and the liquid crystal is bright after penetrating through the polarizer II.
And lens curved surface protective glasses protruding outwards are arranged on the outer sides of the glasses lenses.
By adopting the technical scheme of the invention, the following beneficial effects can be obtained:
the virtual reality glasses with adjustable light transmittance are significant for AR/MR. The liquid crystal light-transmitting sheet consists of two polaroids, two layers of transparent conductive glass and one layer of liquid crystal, and can be in a normally-open structure and a normally-closed structure according to different directions of light transmission axes of the polaroids. Two polaroid printing opacity axles mutually perpendicular of normally opening structure, its theory of operation is: the natural light is transmitted through the polarizer I and converted into linearly polarized light, when no external electric field exists, the linearly polarized light transmitted through the polarizer I is twisted by the twisted liquid crystal molecules by 90 degrees, and the linearly polarized light with the twisted polarization surface by 90 degrees just transmits through the polarizer II perpendicular to the polarizer I to be bright; when an external electric field is applied, the liquid crystal is vertically arranged, linearly polarized light directly penetrates through the liquid crystal, the change of a polarization surface is avoided, the polarizer II cannot penetrate through, and the appearance is dark. The structure is not electrified and transmits light, and is not electrified and does not transmit light, so the structure is called as a normally open structure. Two polaroid printing opacity axles of normally closed structure are parallel to each other, and its theory of operation is: the natural light penetrates through the polarizer I and is converted into linearly polarized light, when no external electric field exists, the linearly polarized light penetrating through the polarizer I is twisted by 90 degrees by the twisted liquid crystal molecules, and the linearly polarized light with the polarization plane twisted by 90 degrees cannot penetrate through the polarizer II parallel to the polarizer I and is dark. When an external electric field is applied, the liquid crystal is vertically arranged, linearly polarized light directly penetrates through the liquid crystal, the change of a polarization surface is avoided, and the linearly polarized light just penetrates through the polarizer II and is bright. It is not electrified to transmit light, and is electrified to transmit light, so that it is called normally-off structure. Normally open the scene that uses more under the structure more is fit for the dim light environment, normally close the scene that uses more under the structure more is fit for the highlight environment. The two liquid crystal light-transmitting sheets can be directly attached to the glasses or attached to the lens curved surface protective glasses in front of the glasses. The light intensity of ambient light is obtained through a light sensor on the glasses, the voltage applied to the liquid crystal is automatically adjusted according to the light intensity, the voltage on the liquid crystal can also be manually adjusted, and the light transmittance is different at different voltages. The strong light reduces the light transmittance, the interference of the ambient light to the virtual image is reduced, and the virtual image is clearer; the transmittance is increased under weak light, more ambient light enters eyes through the lens, and the eyes see more clearly in the real world. By the aid of the adjustable light transmittance, the problems of unclear virtual images, poor contrast, low color gamut, unreal display and the like caused by overlarge light transmittance can be solved; the problems of unclear real world, unreal information superposition and the like caused by too small light transmittance can be avoided, the use feeling of the AR/MR glasses is improved, and the application scene is widened. When the liquid crystal light-transmitting piece structure and the adjustable light transmittance augmented reality and mixed reality glasses based on the liquid crystal light-transmitting pieces are used, the light transmittance is adjusted by automatically or manually adjusting the voltage at two ends of the liquid crystal according to the light intensity of ambient light, and the real-time adjustment of the light transmittance is realized. The problems of unclear virtual images, poor contrast, low color gamut, unreal display and the like caused by overlarge light transmittance can be avoided; the problems of unclear real world, unreal information superposition and the like caused by too small light transmittance can be avoided, the use feeling of the AR/MR glasses is improved, and the application scene is widened. Belonging to the display terminal industry. The virtual reality glasses with adjustable light transmittance are simple in structure and low in cost, and the problems of low contrast, low color gamut and limited application scene caused by AR/MR light transmittance are solved by developing a novel liquid crystal light transmitting piece structure consisting of parts such as a polarizer, liquid crystal and the like and AR/MR glasses based on the liquid crystal light transmitting piece, so that the overall performance is improved.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
fig. 1 is a schematic structural diagram of a liquid crystal transparent sheet of a virtual reality glasses with adjustable light transmittance according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of a liquid crystal transparent sheet of the virtual reality glasses with adjustable light transmittance according to the present invention;
FIG. 3 is a schematic structural view of a liquid crystal light-transmitting sheet of the virtual reality glasses with adjustable light transmittance, which is attached to a glasses lens;
FIG. 4 is a schematic structural view of a liquid crystal transparent sheet of the virtual reality glasses with adjustable light transmittance, which is adhered to a lens curved surface protective glass;
in the drawings, the reference numbers are respectively: 1. a liquid crystal; 2. transparent electrode glass I; 3. transparent electrode glass II; 4. a polarizer I; 5. a polarizer II; 6. a liquid crystal light-transmitting sheet; 7. a spectacle lens; 8. lens curved surface protective glasses; 9. an eyeglass frame.
Detailed Description
The following detailed description of the embodiments of the present invention, such as the shapes and structures of the components, the mutual positions and connection relations among the components, the functions and operation principles of the components, will be made by referring to the accompanying drawings and the description of the embodiments:
as shown in the attached drawings 1-2, the invention relates to virtual reality glasses with adjustable light transmittance, which comprise a liquid crystal 1, wherein one side of the liquid crystal 1 is provided with transparent electrode glass I2, the other side of the liquid crystal 1 is provided with transparent electrode glass II 3, the outer side of the transparent electrode glass I2 is provided with a polaroid I4, the outer side of the transparent electrode glass II 3 is provided with a polaroid II 5, and the transmission axis of the polaroid I4 is arranged in a structure which is vertical to or parallel to the transmission axis of the polaroid II 5. The liquid crystal light-transmitting sheet 6 is formed by the polaroid I4, the transparent electrode glass I2, the liquid crystal 1, the transparent electrode glass II 3 and the polaroid II 5. The virtual reality glasses with the adjustable light transmittance of the structure are significant for AR/MR. The liquid crystal light-transmitting sheet consists of two polaroids, two layers of transparent conductive glass and one layer of liquid crystal, and can be in a normally-open structure and a normally-closed structure according to different directions of light transmission axes of the polaroids. Two polaroid printing opacity axles mutually perpendicular of normally opening structure, its theory of operation is: the natural light is transmitted through the polarizer I and converted into linearly polarized light, when no external electric field exists, the linearly polarized light transmitted through the polarizer I is twisted by the twisted liquid crystal molecules by 90 degrees, and the linearly polarized light with the twisted polarization surface by 90 degrees just transmits through the polarizer II perpendicular to the polarizer I to be bright; when an external electric field is applied, the liquid crystal is vertically arranged, linearly polarized light directly penetrates through the liquid crystal, the change of a polarization surface is avoided, the polarizer II cannot penetrate through, and the appearance is dark. The structure is not electrified and transmits light, and is not electrified and does not transmit light, so the structure is called as a normally open structure. Two polaroid printing opacity axles of normally closed structure are parallel to each other, and its theory of operation is: the natural light penetrates through the polarizer I and is converted into linearly polarized light, when no external electric field exists, the linearly polarized light penetrating through the polarizer I is twisted by 90 degrees by the twisted liquid crystal molecules, and the linearly polarized light with the polarization plane twisted by 90 degrees cannot penetrate through the polarizer II parallel to the polarizer I and is dark. When an external electric field is applied, the liquid crystal is vertically arranged, linearly polarized light directly penetrates through the liquid crystal, the change of a polarization surface is avoided, and the linearly polarized light just penetrates through the polarizer II and is bright. It is not electrified to transmit light, and is electrified to transmit light, so that it is called normally-off structure. Normally open the scene that uses more under the structure more is fit for the dim light environment, normally close the scene that uses more under the structure more is fit for the highlight environment. The two liquid crystal light-transmitting sheets can be directly attached to the glasses or attached to the lens curved surface protective glasses in front of the glasses. The light intensity of ambient light is obtained through a light sensor on the glasses, the voltage applied to the liquid crystal is automatically adjusted according to the light intensity, the voltage on the liquid crystal can also be manually adjusted, and the light transmittance is different at different voltages. The strong light reduces the light transmittance, the interference of the ambient light to the virtual image is reduced, and the virtual image is clearer; the transmittance is increased under weak light, more ambient light enters eyes through the lens, and the eyes see more clearly in the real world. By the aid of the adjustable light transmittance, the problems of unclear virtual images, poor contrast, low color gamut, unreal display and the like caused by overlarge light transmittance can be solved; the problems of unclear real world, unreal information superposition and the like caused by too small light transmittance can be avoided, the use feeling of the AR/MR glasses is improved, and the application scene is widened. When the liquid crystal light-transmitting piece structure and the adjustable light transmittance augmented reality and mixed reality glasses based on the liquid crystal light-transmitting pieces are used, the light transmittance is adjusted by automatically or manually adjusting the voltage at two ends of the liquid crystal according to the light intensity of ambient light, and the real-time adjustment of the light transmittance is realized. The problems of unclear virtual images, poor contrast, low color gamut, unreal display and the like caused by overlarge light transmittance can be avoided; the problems of unclear real world, unreal information superposition and the like caused by too small light transmittance can be avoided, the use feeling of the AR/MR glasses is improved, and the application scene is widened. Belonging to the display terminal industry. The virtual reality glasses with adjustable light transmittance are simple in structure and low in cost, and the problems of low contrast, low color gamut and limited application scene caused by AR/MR light transmittance are solved by developing a novel liquid crystal light transmitting piece structure consisting of parts such as a polarizer, liquid crystal and the like and AR/MR glasses based on the liquid crystal light transmitting piece, so that the overall performance is improved.
Liquid crystal printing opacity piece 6 set up to pasting the structure on spectacle lens 7, when liquid crystal printing opacity piece 6 pasted on spectacle lens 7, polaroid II 5 sets up to pasting the structure on spectacle lens 7 surface. In the first embodiment, as shown in fig. 3, the liquid crystal light transmitting sheet 6 is attached to the eyeglass lens 7. Thus, the use feeling and the performance of the AR/MR glasses are effectively improved.
Liquid crystal printing opacity piece 6 set up to pasting the structure on lens curved surface protective glass 8, when liquid crystal printing opacity piece 6 pasted on lens curved surface protective glass 8, polaroid II 5 sets up to pasting the structure on lens curved surface protective glass 8 surface. In the second embodiment, as shown in gambler 4, the liquid crystal light transmitting sheet 6 is bonded to the curved lens protective glass 8, thereby improving the use feeling and performance of the glasses.
Virtual reality glasses with adjustable luminousness include spectacle-frame 9, set up two glasses lens 7 on the spectacle-frame 9. Above-mentioned structure, spectacle-frame are used for fixed mounting glasses lens, and 6 cooperation glasses of liquid crystal printing opacity pieces use, can convenient and fast realize pasting and take off.
When the liquid crystal light-transmitting sheets 6 are adhered to the spectacle lenses 7, each spectacle lens 7 is provided with a structure capable of adhering one liquid crystal light-transmitting sheet 6. When the liquid crystal light-transmitting sheet 6 is pasted on the lens curved surface protective glass 8, the lens curved surface protective glass 8 is provided with a structure capable of pasting the whole liquid crystal light-transmitting sheet 6. The structure, the liquid crystal light-transmitting piece are arranged according to different embodiments.
As a first embodiment of glasses, when the transmission axis of the polarizer i 4 and the transmission axis of the polarizer ii 5 are arranged perpendicularly, natural light is transmitted through the polarizer i 4 and converted into linearly polarized light, and when no external electric field is applied, the linearly polarized light transmitted through the polarizer i 4 is twisted by 90 ° by the twisted liquid crystal 1 molecules, and the linearly polarized light whose polarization plane is twisted by 90 ° is transmitted through the polarizer ii 5 perpendicular to the polarizer i 4 and appears bright; when an external electric field is applied, the liquid crystal 1 is vertically arranged, linearly polarized light directly penetrates through the liquid crystal 1, the change of a polarization surface does not occur, the linearly polarized light cannot penetrate through the polarizer II 5, and the appearance is dark.
As a second embodiment of the glasses, when the transmission axis of the polarizer i 4 and the transmission axis of the polarizer ii 5 are arranged in parallel, natural light is converted into linearly polarized light through the polarizer i 4, and when no external electric field is applied, the linearly polarized light passing through the polarizer i 4 is twisted by 90 ° by the twisted liquid crystal 1 molecules, and the linearly polarized light with the polarization plane twisted by 90 ° cannot pass through the polarizer ii 5 parallel to the polarizer i 4, and appears dark; when an external electric field is applied, the liquid crystal 1 is vertically arranged, linearly polarized light directly penetrates through the liquid crystal 1 without changing the polarization surface, and the linearly polarized light penetrates through the polarizer II 5 to be bright.
And the outer side of the spectacle lens 7 is provided with a lens curved surface protective glass 8 which protrudes outwards.
In the virtual reality glasses with adjustable light transmittance, a transparent conducting layer is deposited on glass to form transparent conducting glass, and the transparent conducting layer can be indium tin oxide, indium zinc oxide or indium gallium zinc oxide. The conductive surfaces of the two layers of transparent conductive glass are attached, and liquid crystal is injected between the conductive surfaces of the two layers of transparent conductive glass. The polaroids are attached to the corresponding transparent conductive glass, and the transmission axes of the two polaroids can be vertical or parallel according to the use scene. The liquid crystal light-transmitting sheet is attached to the lens or the curved-surface protective glasses. Therefore, the formed glasses effectively improve the service performance.
In the virtual reality glasses with adjustable light transmittance, the structures of two liquid crystal light-transmitting sheets are emphatically protected, the method for preparing the liquid crystal light-transmitting sheets is used, and the virtual reality glasses with the adjustable light transmittance and the mixed reality glasses based on the liquid crystal light-transmitting sheets are used. The liquid crystal light-transmitting sheet with adjustable light transmittance consists of two polaroids, two layers of transparent conductive glass and one layer of liquid crystal, and is divided into normally-open and normally-closed structures according to the light transmission axis direction of the polaroids. The liquid crystal light-transmitting piece is attached to the glasses or the lens curved surface protective glasses, the voltage at two ends of the liquid crystal is automatically or manually adjusted according to the light intensity of the ambient light, the light transmittance is adjusted, and the real-time adjustment of the light transmittance is realized. The problems of unclear virtual images, poor contrast, low color gamut, unreal display and the like caused by overlarge light transmittance can be avoided; the problems of unclear real world, unreal information superposition and the like caused by too small light transmittance can be avoided, the use feeling of the AR/MR glasses is improved, the application scene is widened, and the market competitiveness of the product is improved.
The virtual reality glasses with adjustable light transmittance are significant for AR/MR. The liquid crystal light-transmitting sheet consists of two polaroids, two layers of transparent conductive glass and one layer of liquid crystal, and can be in a normally-open structure and a normally-closed structure according to different directions of light transmission axes of the polaroids. Two polaroid printing opacity axles mutually perpendicular of normally opening structure, its theory of operation is: the natural light is transmitted through the polarizer I and converted into linearly polarized light, when no external electric field exists, the linearly polarized light transmitted through the polarizer I is twisted by the twisted liquid crystal molecules by 90 degrees, and the linearly polarized light with the twisted polarization surface by 90 degrees just transmits through the polarizer II perpendicular to the polarizer I to be bright; when an external electric field is applied, the liquid crystal is vertically arranged, linearly polarized light directly penetrates through the liquid crystal, the change of a polarization surface is avoided, the polarizer II cannot penetrate through, and the appearance is dark. The structure is not electrified and transmits light, and is not electrified and does not transmit light, so the structure is called as a normally open structure. Two polaroid printing opacity axles of normally closed structure are parallel to each other, and its theory of operation is: the natural light penetrates through the polarizer I and is converted into linearly polarized light, when no external electric field exists, the linearly polarized light penetrating through the polarizer I is twisted by 90 degrees by the twisted liquid crystal molecules, and the linearly polarized light with the polarization plane twisted by 90 degrees cannot penetrate through the polarizer II parallel to the polarizer I and is dark. When an external electric field is applied, the liquid crystal is vertically arranged, linearly polarized light directly penetrates through the liquid crystal, the change of a polarization surface is avoided, and the linearly polarized light just penetrates through the polarizer II and is bright. It is not electrified to transmit light, and is electrified to transmit light, so that it is called normally-off structure. Normally open the scene that uses more under the structure more is fit for the dim light environment, normally close the scene that uses more under the structure more is fit for the highlight environment. The two liquid crystal light-transmitting sheets can be directly attached to the glasses or attached to the lens curved surface protective glasses in front of the glasses. The light intensity of ambient light is obtained through a light sensor on the glasses, the voltage applied to the liquid crystal is automatically adjusted according to the light intensity, the voltage on the liquid crystal can also be manually adjusted, and the light transmittance is different at different voltages. The strong light reduces the light transmittance, the interference of the ambient light to the virtual image is reduced, and the virtual image is clearer; the transmittance is increased under weak light, more ambient light enters eyes through the lens, and the eyes see more clearly in the real world. By the aid of the adjustable light transmittance, the problems of unclear virtual images, poor contrast, low color gamut, unreal display and the like caused by overlarge light transmittance can be solved; the problems of unclear real world, unreal information superposition and the like caused by too small light transmittance can be avoided, the use feeling of the AR/MR glasses is improved, and the application scene is widened. When the liquid crystal light-transmitting piece structure and the adjustable light transmittance augmented reality and mixed reality glasses based on the liquid crystal light-transmitting pieces are used, the light transmittance is adjusted by automatically or manually adjusting the voltage at two ends of the liquid crystal according to the light intensity of ambient light, and the real-time adjustment of the light transmittance is realized. The problems of unclear virtual images, poor contrast, low color gamut, unreal display and the like caused by overlarge light transmittance can be avoided; the problems of unclear real world, unreal information superposition and the like caused by too small light transmittance can be avoided, the use feeling of the AR/MR glasses is improved, and the application scene is widened. Belonging to the display terminal industry. The virtual reality glasses with adjustable light transmittance are simple in structure and low in cost, and the problems of low contrast, low color gamut and limited application scene caused by AR/MR light transmittance are solved by developing a novel liquid crystal light transmitting piece structure consisting of parts such as a polarizer, liquid crystal and the like and AR/MR glasses based on the liquid crystal light transmitting piece, so that the overall performance is improved.
The present invention has been described in connection with the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, changes and equivalents of the embodiments of the invention, and its application to other applications without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a virtual reality glasses with adjustable luminousness which characterized in that: including liquid crystal (1), liquid crystal (1) one side sets up transparent electrode glass I (2), and liquid crystal (1) opposite side sets up transparent electrode glass II (3), and transparent electrode glass I (2) outside sets up polaroid I (4), and the transparent electrode glass II (3) outside sets up polaroid II (5), and the printing opacity axle of polaroid I (4) sets up to the structure of arranging perpendicularly or parallel arrangement with the printing opacity axle of polaroid II (5).
2. The light transmittance adjustable virtual reality glasses according to claim 1, wherein: the liquid crystal transparent sheet (6) is formed by the polaroid I (4), the transparent electrode glass I (2), the liquid crystal (1), the transparent electrode glass II (3) and the polaroid II (5).
3. The light transmittance adjustable virtual reality glasses of claim 2, wherein: liquid crystal printing opacity piece (6) set up to pasting the structure on spectacle lens (7), when liquid crystal printing opacity piece (6) were pasted on spectacle lens (7), polaroid II (5) set up to pasting the structure on spectacle lens (7) surface.
4. The light transmittance adjustable virtual reality glasses of claim 2, wherein: the liquid crystal light-transmitting sheet (6) is set to be of a structure capable of being adhered to the lens curved surface protective glass (8), and when the liquid crystal light-transmitting sheet (6) is adhered to the lens curved surface protective glass (8), the polaroid II (5) is set to be of a structure capable of being adhered to the surface of the lens curved surface protective glass (8).
5. The light transmittance adjustable virtual reality glasses of claim 2, wherein: virtual reality glasses with adjustable luminousness include spectacle-frame (9), set up two glasses lens (7) on spectacle-frame (9).
6. The light transmittance adjustable virtual reality glasses of claim 3, wherein: when the liquid crystal light-transmitting sheets (6) are adhered to the glasses lenses (7), each glasses lens (7) is provided with a structure capable of adhering one liquid crystal light-transmitting sheet (6).
7. Light transmittance adjustable virtual reality glasses according to claim 4, characterized in that: when the liquid crystal light-transmitting sheet (6) is pasted on the lens curved surface protective glass (8), the lens curved surface protective glass (8) is provided with a structure capable of pasting the whole liquid crystal light-transmitting sheet (6).
8. The light transmittance adjustable virtual reality glasses according to claim 1, wherein: when the transmission axis of the polarizer I (4) and the transmission axis of the polarizer II (5) are vertically arranged, natural light is transmitted through the polarizer I (4) and converted into linearly polarized light, when no external electric field exists, the linearly polarized light transmitted through the polarizer I (4) is twisted by 90 degrees by the twisted liquid crystal (1) molecules, and the linearly polarized light with the polarization plane twisted by 90 degrees is transmitted through the polarizer II (5) vertical to the polarizer I (4) and appears bright; when an external electric field is applied, the liquid crystal (1) is vertically arranged, linearly polarized light directly penetrates through the liquid crystal (1), the polarization surface is not changed, the linearly polarized light cannot penetrate through the polarizer II (5), and the appearance is dark.
9. The light transmittance adjustable virtual reality glasses according to claim 1, wherein: when the transmission axis of the polarizer I (4) and the transmission axis of the polarizer II (5) are arranged in parallel, natural light is transmitted through the polarizer I (4) and converted into linearly polarized light, when no external electric field exists, the linearly polarized light transmitted through the polarizer I (4) is twisted by 90 degrees by the twisted liquid crystal (1) molecules, and the linearly polarized light with the polarization plane twisted by 90 degrees cannot transmit the polarizer II (5) parallel to the polarizer I (4) and appears dark; when an external electric field is applied, the liquid crystal (1) is vertically arranged, linearly polarized light directly penetrates through the liquid crystal (1), the polarization surface is not changed, and the polarizer II (5) is transparent.
10. Light transmittance adjustable virtual reality glasses according to claim 4, characterized in that: and the outer side of the glasses lens (7) is provided with a lens curved surface protective glass (8) which protrudes outwards.
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| CN202110710554.0A CN113376899A (en) | 2021-06-25 | 2021-06-25 | Virtual reality glasses with adjustable luminousness |
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| CN202110710554.0A CN113376899A (en) | 2021-06-25 | 2021-06-25 | Virtual reality glasses with adjustable luminousness |
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| CN114185172A (en) * | 2021-11-22 | 2022-03-15 | 深圳市思坦科技有限公司 | Ambient light intensity adjusting method and device, AR glasses and storage medium |
| CN115236857A (en) * | 2022-05-31 | 2022-10-25 | 歌尔光学科技有限公司 | Optical assembly and AR device |
| CN115639677A (en) * | 2022-12-23 | 2023-01-24 | 广州视景医疗软件有限公司 | VR (virtual reality) glasses-based image contrast adjusting method and device |
| CN116661194A (en) * | 2023-06-28 | 2023-08-29 | 北京行者无疆科技有限公司 | Dimming component and AR glasses |
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| CN114185172A (en) * | 2021-11-22 | 2022-03-15 | 深圳市思坦科技有限公司 | Ambient light intensity adjusting method and device, AR glasses and storage medium |
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Application publication date: 20210910 |