CN113495360A - Wearable display device - Google Patents
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- CN113495360A CN113495360A CN202010199480.4A CN202010199480A CN113495360A CN 113495360 A CN113495360 A CN 113495360A CN 202010199480 A CN202010199480 A CN 202010199480A CN 113495360 A CN113495360 A CN 113495360A
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- 230000003287 optical effect Effects 0.000 claims abstract description 148
- 239000000463 material Substances 0.000 claims description 5
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 claims description 4
- 230000000007 visual effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000003190 augmentative effect Effects 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- 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
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
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Abstract
A wearable display device comprises a first optical waveguide lens and a first projection component. The first light guide lens is provided with a first area and a second area, and the first projection component is arranged on the first light guide lens and used for projecting a plurality of beams of light and comprises a first light projector and a second light projector. The first light projector and the second light projector are respectively arranged at different positions of the first optical waveguide lens in a first direction, and the first light projector and the second light projector are not overlapped in a second direction, wherein the first direction is not parallel to the second direction, the first light projector projects a first light to the first region, the second light projector projects a second light to the second region, and the first light and the second light are not overlapped in the second direction.
Description
Technical Field
The present invention relates to a wearable display device, and more particularly, to a wearable display device having a light projector and an optical waveguide lens.
Background
With the development of science and technology, the display technology of images is gradually improved. For example, Virtual Reality (VR) display devices and Augmented Reality (AR) display devices have been introduced to provide people with a richer and more colorful visual experience. In the face of the desire of people to seek high performance and miniaturization, if the wearable display device is lighter, thinner and lighter, it will be beneficial to improve the usability, and in addition, the size of the viewing angle and the volume of the display device are also important factors affecting the user experience. Therefore, it is an important issue to provide an electronic product with high quality, high pixel and wide viewing angle.
Disclosure of Invention
The present invention is directed to a wearable display device to solve at least one of the above problems.
An embodiment of the invention provides a wearable display device, which includes a first optical waveguide lens and a first projection component. The first light guide lens is provided with a first area and a second area, and the first projection component is arranged on the first light guide lens and used for projecting a plurality of beams of light and comprises a first light projector and a second light projector. The first light projector and the second light projector are respectively arranged at different positions of the first optical waveguide lens in a first direction, and the first light projector and the second light projector are not overlapped in a second direction, wherein the first direction is not parallel to the second direction, the first light projector projects a first light to the first region, the second light projector projects a second light to the second region, and the first light and the second light are not overlapped in the second direction.
In an embodiment, the wearable display device further includes: a second optical waveguide lens and a second projection component, the second optical waveguide lens is adjacent to the first optical waveguide lens and has a third area and a fourth area, the second projection component is arranged on the second optical waveguide lens and comprises a third light projector and a fourth light projector, wherein the third light projector and the fourth light projector are respectively arranged at different positions of the second optical waveguide lens in the first direction, and the third light projector and the fourth light projector are not overlapped in the first direction; the third light projector projects a third light to the third area, the second light projector projects a fourth light to the fourth area, and the third light and the fourth light are not overlapped in the second direction.
In an embodiment, the first projection assembly further includes a third light projector, and the first optical waveguide lens further includes a third region, the third light projector projects a third light to the third region, and the first, second, and third lights do not overlap in the second direction.
In an embodiment, the wearable display device further includes a connecting line component disposed on the first optical waveguide lens, and the connecting line component connects the first optical waveguide lens and the second light projector.
In an embodiment, the wearable display device further includes an optical component disposed on the first optical waveguide lens, and when the plurality of beams of light are emitted from the first projection component to the first optical waveguide lens, the optical component reflects the light in the first optical waveguide lens.
In one embodiment, the optical element is tilted with respect to a surface of the first optical waveguide lens.
In an embodiment, the wearable display device further includes an optical element disposed at one side of the first optical waveguide lens, and when the plurality of light beams emitted by the first projection assembly sequentially pass through the first optical waveguide lens and the optical element, the optical element makes each light beam have a viewing angle on the optical element, and the light beams overlap each other.
In an embodiment, the wearable display device further includes a virtual reality lens and a eye protection housing, the virtual reality lens is disposed on one side of the first waveguide lens, and the virtual reality lens, the first waveguide lens and the first light projection element are disposed in the eye protection housing.
In one embodiment, a viewing area of the eye shield has an opaque material.
In one embodiment, a visual region of the eye-protecting cover has a polymer dispersed liquid crystal material, and the eye-protecting cover can be switched between a power-off mode and a power-on mode, wherein when the eye-protecting cover is in the power-off mode, the visual region presents a fog surface, and when the eye-protecting cover is in the power-on mode, the visual region presents a transparent surface.
The invention has the advantages that the plurality of light projectors are arranged on each light waveguide lens, and the light emitted by the light projectors is not overlapped on the independent areas of the light waveguide lenses, so that the display device has higher pixel density and wider visual field, and the quality of the device is greatly improved and the use experience of a user is enriched.
Drawings
Embodiments of the present invention will become more fully understood from the detailed description given herein below and the accompanying drawings.
Fig. 1A is a schematic view of a wearable display device according to an embodiment of the invention.
FIG. 1B is a schematic diagram of multiple light projectors projecting multiple beams of light onto multiple optical waveguide lenses.
Fig. 1C is a schematic diagram of an optical component and a first optical waveguide lens according to another embodiment of the invention.
Fig. 1D is a schematic diagram of an optical component and a first optical waveguide lens according to another embodiment of the invention.
FIG. 2 is a schematic diagram of a plurality of beams of light emitted by the first projection assembly and the first optical waveguide lens according to another embodiment of the present invention.
Fig. 3 is a schematic view of a wearable display device according to another embodiment of the invention.
Fig. 4 is a schematic view of a wearable display device according to another embodiment of the invention.
Fig. 5A and 5B are schematic diagrams illustrating a wearable display device according to another embodiment of the invention, including an optical element.
FIG. 6 is a schematic view of a plurality of wearable display devices according to other embodiments of the invention.
The reference numbers are as follows:
100. 300, 400, 500, 601, 602-wearable display device
11-first optical waveguide lens
11F-surface
11S1, 11S2 first and second sides
11SS1, 11SS 2-first and second sides
12-second optical waveguide lens
12S1, 12S2 first and second sides
12SS1, 12SS 2-first and second sides
13-frame
602A-eye protection cover under power-off mode
602B-eye shield under power-on mode
70-virtual reality lens
81. 82-eye protection cover shell
82A-eye shield shell in fog face state
82B-eye protection cover shell in transparent state
A1, A2, A3, A4, A5, A6 to the first, second, third, fourth, fifth, sixth regions
CN-connecting wire assembly
CN1, CN2, first and second connecting lines
E1, E2 eyes (both eyes)
L1, L2, L3, L4-first, second, third, fourth light
P1, P2, P3, P4, P5, P6-first, second, third, fourth, fifth, sixth light projector
OM-optical element
PA1 first projection assembly
PA 2-second projection assembly
RA, RA' optical component (grating)
Axial direction of X-coordinate
Y-coordinate axial direction (first direction)
Axial direction of Z-coordinate
Angle of visual field from OAE to light output
Detailed Description
Further areas of applicability of the present device will become apparent from the detailed description provided hereinafter. It should be understood that the following detailed description and specific examples, while indicating exemplary embodiments of the carrier assembly, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
First embodiment
Fig. 1A is a schematic view of a wearable display device 10000 according to an embodiment of the invention. As shown, the wearable display device 100 can be used as an Augmented Reality (AR) wearable display device, which includes a first optical waveguide lens 11, a second optical waveguide lens 12, a first projection element PA1 and a second projection element PA 2. The first optical waveguide lens 11 and the second optical waveguide lens 12 are adjacent to each other and can be connected to each other by a frame 13 (or frame) and correspond to the eyes E1 and E2 of a user, respectively. The first projection module PA1 and the second projection module PA2 are respectively disposed on the first optical waveguide lens 11 and the second optical waveguide lens 12 for projecting a plurality of lights to the first optical waveguide lens 11 and the second optical waveguide lens 12, and the lights will pass through the first optical waveguide lens 11 and the second optical waveguide lens 12 to the two eyes E1 and E2 of the user, so that the user can view images on the first optical waveguide lens 11 and the second optical waveguide lens 12. Details of the wearable display device 100 will be described below.
Referring to fig. 1A to fig. 1B, wherein fig. 1B is a schematic top view of the wearable display device 100 in fig. 1A. The first and second optical waveguide lenses 11 and 12 are made of transparent material (transparent material) and have a thickness in the Y-axis direction, and both have a first side 11S1 and 12S1 and a second side 11S2 and 12S 2. The first and second projection assemblies PA1, PA2 emit a plurality of beams of light and project the light to the first and second optical waveguide lenses 11, 12, wherein the light enters from the first sides 11S1, 12S1 and exits from the second sides 11S2, 12S2 to enter the eyes E1, E2 of the user. The light emitted from the first and second projection assemblies PA1, P2 may be sub-frame image (sub-frame image) beams.
Specifically, with respect to the first optical waveguide lens 11 and the first projection assembly PA1, the first projection assembly PA1 includes a plurality of light projectors: a first light projector P1 and a second light projector P2, which are respectively disposed on a first area a1 and a second area a2 of the first optical waveguide lens 11. The first light projector P1 projects a first light L1, the second light projector P2 projects a second light L2, enters from the first side 11S1 of the first optical waveguide lens 11 and reflects or diffracts in the first optical waveguide lens 11 through an optical element RA, and exits from the second side 11S2 to enter the user' S eye E1 to provide augmented reality images. The first light projector P1 and the second light projector P2 are respectively disposed on the side (lateral side) of the first optical waveguide lens 11: the first side 11SS1 and the second side 11SS2 are located at different positions in the X-axis direction (first direction) of the first optical waveguide lens 11, and project the first light L1 and the second light L2 in the first region a1 and the second region a2, respectively, without overlapping each other in the Y-axis direction (second direction).
Similarly, with respect to the second optical waveguide lens 12 and the second projection assembly PA2, the second projection assembly PA2 includes a plurality of light projectors: a third light projector P3 and a fourth light projector P4, which are respectively disposed on a third area A3 and a fourth area a4 of the second optical waveguide lens 12. The third light projector P1 projects a third light L3 and the fourth light projector P4 projects a second light L4, which enters from the first side 12S1 of the second optical waveguide lens 12 and is reflected or diffracted by the optical assembly RA within the second optical waveguide lens 12 and exits from the second side 12S2 to enter the user' S eye E2 to provide augmented reality images. Wherein, the third light projector P3 and the fourth light projector P4 are respectively arranged at the side of the second optical waveguide lens 11: the first side edge 12SS1 and the second side edge 12SS2 project the third light L3 and the fourth light L4 in the third region A3 and the fourth region a4 without overlapping each other in the Y-axis direction. The first to fourth lights L1 to L4 projected from the respective first to fourth regions a1 to a4 can constitute a complete image for the eyes E1 and E2 of the user.
The optical element RA may be a plurality of gratings (gratings) disposed in the first optical waveguide lens 11 and the second optical waveguide lens 12 to reflect or diffract the light L1 to L4 emitted from the light projectors P1 to P4, to reflect or diffract the light L1 to L4 in the first optical waveguide lens 11 and the second optical waveguide lens 12, and to output the light L1 to L4 from the output grating RA.
In this way, by disposing the projection modules PA1 and PA2 including the light projectors P1 to P4 on each of the optical waveguide lenses 11 and 12, the wearable display device 100 has a high pixel density and a wide field-of-view (field-of-view), thereby greatly improving the device quality and enriching the viewing experience of the user. In addition, each of the light projectors P1-P4 may be independently controlled, such as by being connected to a control unit in the wearable display device 100, and a user may activate the light projectors P1-P4 using a control (e.g., a control button configured on the appearance of the wearable display device 100). For example, when a user wants to view the surrounding environment and simultaneously activate the projection image provided by the wearable display device 100, the first and second light projectors P1 and P2 may be turned on to display images in the first and second regions a1 and a2 of the first optical waveguide lens 11, and the third and fourth light projectors P3 and P4 may be turned off on the second optical waveguide lens 12 to make the surrounding environment visible without displaying images. As such, the wearable display device 100 provides a user with a more flexible use experience.
Fig. 1C is a schematic diagram of a first optical waveguide lens 11 and an optical assembly RA' according to another embodiment. In the present embodiment, each grating of the optical assembly RA 'is inclined with respect to a surface 11F of the first optical waveguide lens 11, and the first and second lights L1, L2 are reflected or diffracted at the first optical waveguide lens 11, and the output portion of the optical assembly RA' can be disposed on the first side 11S1 and inclined with respect to the surface 11F, so that the viewing angles of the first and second lights L1, L2 output at different positions of the first optical waveguide lens 11 can be rotated to adjust the output angles of the first and second lights L1, L2, so that the light beam at the first optical waveguide lens 11 is directed toward the eye E1 of the user. In some embodiments, the optical component RA' of the tilted grating may also be mounted on the second optical waveguide lens 12.
Fig. 1D is a schematic diagram of a first optical waveguide lens 11 and an optical component RA ″ according to another embodiment. In the present embodiment, each grating of the optical element RA ″ is tilted with respect to the surface 11F of the first optical waveguide lens 11, and the first and second lights L1, L2 are reflected or diffracted by the first optical waveguide lens 11, and the output portion of the optical element RA ″ can be disposed on the second side 11S2, so that the viewing angles of the first and second lights L1, L2 at different positions of the first optical waveguide lens 11 can be rotated to adjust the output angles of the first lights L1, L2.
Second embodiment
Referring to fig. 2, there is shown a configuration of the first optical waveguide lens 11 and the first projection assembly PA1 according to another embodiment of the present invention. Compared to the embodiment in fig. 1B, the second light projector P2 of the present embodiment is disposed on the second area a2 and adjacent to the first area a1, and does not overlap with the first area a 1. The second light projector P2 emits the second light L2 also in the second area a2 and not overlapping the first area a 1. The arrangement of the first projection assembly PA1 also provides high pixel density and a wide field of view. In some embodiments, the second projection assembly PA2 may also be configured as the same or symmetrical first projection assembly PA1 shown in fig. 2.
Third embodiment
Fig. 3 is a schematic diagram of the first and second projection assemblies PA1, PA2 and the first and second optical waveguide lenses 11, 12 according to another embodiment of the present invention. Compared to the projection assembly of the first embodiment (fig. 1), each projection assembly PA1, PA2 of the present embodiment has more light projectors on the corresponding single optical waveguide lenses 11, 12: the first to third light projectors P1 to P3 and P4 to P6, that is, three light projectors per optical waveguide lens. The first optical waveguide lens 11 can be divided into three regions: the first to third regions a1 to A3 correspond to the first to third light projectors P1 to P3, respectively, the lights emitted from the light projectors P1 to P3 do not overlap on the Y axis, and the fourth to sixth light projectors P4 to P6 project the fourth to sixth regions a4 to a6 of the second optical waveguide lens 12, similarly, do not overlap on the Y axis. Thus, the pixel density of the device can be improved. In other embodiments, there may be four, five or other suitable multiple light projectors on each optical waveguide lens and projecting onto the corresponding areas of the optical waveguide lens.
Fourth embodiment
Fig. 4 is a wearable display device 400 according to another embodiment of the invention. Compared with the wearable display device 100 of the first embodiment, the wearable display device 400 further includes a connecting line component CN disposed on the first optical waveguide lens 11 and the second optical waveguide lens 12. In detail, the connecting line assembly CN includes a first connecting line CN1 and a second connecting line CN2, the first connecting line CN1 connects the upper side of the first optical waveguide lens 11 and the second projection assembly PA2, and the second connecting line CN2 connects the upper side of the second optical waveguide lens 11 and the third projection assembly P3. In this way, by the connecting component CN, a part of the light projectors P2 and P3 do not need to be disposed on the first optical waveguide lens 11 and the second optical waveguide lens 12, so that the wearing weight can be reduced and the convenience can be improved when the user uses the wearable display device 400, and the second light projector P2 and the third light projector P3 connected by the connecting component CN can be attached to the body of the user.
Fifth embodiment
Fig. 5A-5B illustrate another embodiment wearable display device 500 according to the present invention. Compared with the wearable display device 100 of the first embodiment, the wearable display device 500 further includes an optical element OM disposed on the second sides 11S2 and 12S2 of the first and second optical waveguide lenses 11 and 12. The optical element OM may be a diffractive/holographic optical element (diffractive/holographic optical element) for converging the light L1 to L2 from the light projectors P1 to P4 to the eyes E1 and E2 of the user through the optical waveguide lenses 11 and 12. For the first optical waveguide lens 11 and the first projection module PA1 on the left half of the wearable display device 500, as shown in fig. 5B, when the output first light L1 and the output second light L2 pass through the optical element OM, the first light L1 and the second light L2 can be converged to the eyes E1 and E2, and the light passing through the optical element OM has a view angle, i.e., < OAE >, where
The central line of the view angle & lt OAE is directed to the eyes E1 and E2, and the view angle & lt OAE rotates for the light at different positions on the optical element OM. For example, the angle of inclination of the diffracted/holographic light at the leftmost and rightmost positions is greatest, i.e.Leftmost edge
And the rightmost edge
Become horizontal, center line
Inclined with respect to the vertical direction and approaching to the central position of the optical element OM, their directions gradually approach to the vertical direction, wherein the view angles ≦ OAE shifted at each position overlap, thus providing a wider view.
It should be understood that the output portions of the optical components RA' and RA ″ disposed in the optical waveguide lens in fig. 1C-1D (i.e., the gratings that finally reflect/diffract light to the eyes of the user) may also be diffractive/holographic optical elements (diffractive/holographic optical elements), and the optical element OM in fig. 5A-5B has the function of rotating the view angle of light, so that the user can completely see the image displayed on the optical waveguide lens.
Sixth embodiment
FIG. 6 shows a plurality of wearable display devices 601, 602 according to another embodiment of the invention. Compared to the wearable display device 100 of fig. 1, the wearable display devices 601 and 602 further include a Virtual Reality (VR) lens 70 and an eye protection housing 81 (or 82), and in some embodiments, may further include an outer protection member of the head strap and the eye protection housing 81 and 82. The virtual reality lens 70 is disposed on the first side 11S1, 12S2 (i.e., the side away from the eyes E1, E22) of the first and second optical waveguide lenses 11, 12, and an expansion assembly 100' (i.e., the wearable display device 100 shown in fig. 1, including the virtual reality lens 70, the first and second projection assemblies PA1, PA2, the first and second optical waveguide lenses 11, 12, 13) may be disposed in the eye protection cases 81, 82.
As shown in fig. 6, the wearable display device 601 is equipped with an opaque eye shield 81 and a virtual reality lens 70, and thus can be used as a Full-black virtual reality (Full-dark VR) device. The wearable display device 602 is provided with a eye-protecting cover 82 made of Polymer Dispersed Liquid Crystal (PDLC) material, and the eye-protecting cover 82 can be switched between a power-on mode and a power-off mode, and the visual area of the display device can be made to have transparent and matte effects by switching the power-on and power-off currents. When the eye shield 82 is powered on, such as when the wearable display device 602 is in the power-off mode 602A, the eye shield 82 is in the fog state 82A, i.e., the visual area of the eye shield 82 is in a fog state, and thus can be used as a Non-black virtual reality (Non-dark VR) device; when the wearable display device 602 is in the power-on mode 602B, the eye-protecting cover 82 is in the transparent state 82B, i.e., the visual area of the eye-protecting cover 82 is a transparent surface, and thus, the wearable display device can be used as an augmented reality display device. By switching between the power-on and power-off modes, the wearable display device 602 can have more display functions.
Features of the above embodiments may be mixed and matched without departing from the spirit of the disclosure or interfering with each other. In addition, in some embodiments, only one optical waveguide lens and one projection component of the wearable display device can correspond to one eye of the user to see the image displayed on the optical waveguide lens.
In summary, an embodiment of the present invention provides a wearable display device, including: a first optical waveguide lens and a first projection component. The first light guide lens is provided with a first area and a second area, and the first projection component is arranged on the first light guide lens and used for projecting a plurality of beams of light and comprises a first light projector and a second light projector. The first light projector and the second light projector are respectively arranged at different positions of the first optical waveguide lens in a first direction, and the first light projector and the second light projector are not overlapped in a second direction, wherein the first direction is not parallel to the second direction, the first light projector projects a first light to the first region, the second light projector projects a second light to the second region, and the first light and the second light are not overlapped in the second direction.
The embodiment of the invention has at least one of the following advantages or effects that the plurality of light projectors are arranged on each light waveguide lens, and the light emitted by the light projectors is not overlapped on the independent areas of the light waveguide lenses, so that the display device has higher pixel density and wider visual field, the quality of the device is greatly improved, and the use experience of a user is enriched. In addition, in some embodiments, the display device further includes an optical element, which can converge the light from the projector to both eyes of the user, and make the viewing angle of the light on the optical element wider, thereby providing the user with a wider viewing field.
Ordinal numbers such as "first," "second," etc., in the specification and in the claims, do not have a sequential relationship with each other, but are used merely to identify two different elements having the same name.
The embodiments described above are described in sufficient detail to enable those skilled in the art to practice the disclosed apparatus, and it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.
Claims (10)
1. A wearable display device, comprising:
a first optical waveguide lens having a first region and a second region; and
a first projection assembly disposed on the first optical waveguide lens for projecting a plurality of beams of light, the first projector assembly including a first light projector and a second light projector;
the first light projector and the second light projector are respectively arranged at different positions of the first optical waveguide lens in a first direction, and are not overlapped in a second direction, wherein the first direction is not parallel to the second direction;
the first light projector projects a first light to the first region, the second light projector projects a second light to the second region, and the first light and the second light are not overlapped in the second direction.
2. The wearable display apparatus of claim 1, further comprising:
a second optical waveguide lens adjacent to the first optical waveguide lens and having a third region and a fourth region; and
a second projection component arranged on the second optical waveguide lens and comprising a third light projector and a fourth light projector;
the third light projector and the fourth light projector are respectively arranged at different positions of the second optical waveguide lens in the first direction, and are not overlapped in the second direction;
the third light projector projects a third light to the third area, the second light projector projects a fourth light to the fourth area, and the third light and the fourth light are not overlapped in the second direction.
3. The wearable display device of claim 1, wherein the first projection assembly further comprises a third light projector, and the first optical waveguide lens further comprises a third area, the third light projector projects a third light to the third area, and the first, second, and third lights do not overlap in the second direction.
4. The wearable display apparatus of claim 1, further comprising a connection line component disposed on the first optical waveguide lens, the connection line component connecting the first optical waveguide lens and the second light projector.
5. The wearable display device according to claim 1, further comprising an optical element disposed in the first optical waveguide lens, the optical element reflecting or diffracting a plurality of the light beams in the first optical waveguide lens when the plurality of the light beams are emitted from the first projecting element to the first optical waveguide lens.
6. The wearable display device of claim 5, wherein the optical component is tilted with respect to a surface of the first optical waveguide lens.
7. The wearable display device according to claim 1, further comprising an optical element disposed at a side of the first waveguide lens, wherein when the beams of light emitted from the first projection assembly sequentially pass through the first waveguide lens and the optical element, the optical element makes each beam have a viewing angle on the optical element, and the beams of light overlap each other.
8. The wearable display device of claim 1, further comprising a virtual reality lens and a visor housing, the virtual reality lens disposed on a side of the first waveguide lens, and the virtual reality lens, the first waveguide lens and the first light projecting element disposed within the visor housing.
9. The wearable display device of claim 8, wherein a viewing area of the eye shield has an opaque material.
10. The wearable display device of claim 8, wherein a viewing area of the eye shield has a polymer dispersed liquid crystal material, and the eye shield is switchable between a power-off mode and a power-on mode, wherein the viewing area presents a matte surface when the eye shield is in the power-off mode, and the viewing area presents a transparent surface when the eye shield is in the power-on mode.
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