TWI608250B - Wearable apparatus and light guide element - Google Patents

Description

Wearable device and light guiding element

The present invention relates to a display device, and more particularly to a wearable device having a light guiding element.

Wearable devices are considered to be one of the most promising electronic products after the smart phone. The wearable device can be divided into a glasses type, a watch type, a wear type, a wear type, and a stick type according to different types of wear. In addition to allowing users to easily operate during the operation, wearable devices can be accessed through various physiological, health, environmental and satellite positioning data to provide users with physiological information, personalized management and contextual interaction. In order to enhance the convenience of the user's life. With the development of Near Eye Display (NED), the application of Virtual Reality (VR), Mixed Reality (MR), and Augmented Reality (AR) gradually Upgrade. In the case of the eyeglass type wearable device, there are still problems such as a dead angle in the field of view and a bright and dark image on the image.

This "Prior Art" section is only intended to aid in understanding the present invention, and thus the disclosure of the prior art may include prior art that is not known to those of ordinary skill in the art. In addition, the content disclosed in the "Prior Art" does not represent the problem to be solved by the content or one or more embodiments of the present invention, nor does it mean that those having ordinary knowledge in the technical field before the application of the present invention Know or recognize.

The present invention proposes a wearable device to improve the problem of uneven brightness of an image.

The present invention further provides a light guiding element that can be applied to a wearable device to improve the problem of uneven brightness of the image.

In order to achieve at least one of the above advantages or other advantages, an embodiment of the present invention provides a wearable device that includes at least one imaging assembly, wherein the imaging assembly includes a display device and a light guiding element. The display device is used to provide an image beam, and the light guiding element is used to guide the image beam. The light guiding element includes a first light guide plate, a second light guide plate, a light splitting film, and a plurality of light splitting elements. The first light guide plate has a first surface and a second surface opposite to the first surface and a light incident surface connected between the first surface and the second surface, wherein the light incident surface is used for penetrating the image light beam. The second light guide plate is disposed on a portion of the first surface of the first light guide plate and located on the transmission path of the image light beam. The light splitting film is disposed between a portion of the first surface of the first light guide plate and the second light guide plate and adjacent to the light incident surface. The beam splitting film is configured to reflect a portion of the image beam and to penetrate at least a portion of the image beam from the portion of the first surface of the first light guide plate to the second light guide plate. The plurality of light splitting elements are disposed in a region of the first light guide plate that is not covered by the light splitting film, and each of the light splitting elements is connected between the first surface and the second surface. A first acute angle is sandwiched between the surface of each of the light splitting elements facing the light incident surface and the second surface. Each of the beam splitting elements is configured to pass a portion of the image beam and to reflect a portion of the image beam, and the image beam is emitted from the second surface by reflection of the beam splitting element.

In order to achieve at least one of the above advantages or other advantages, an embodiment of the present invention provides a light guiding element adapted to direct a light beam. The light guiding element includes a first light guide plate, a second light guide plate, a light splitting film, and a plurality of light splitting elements. The first light guide plate has a first surface and a second surface opposite to the first surface, and has a light incident surface connected between the first surface and the second surface, wherein the light incident surface is for penetrating the light beam. The second light guide plate is disposed on a portion of the first surface of the first light guide plate and is located on the transmission path of the light beam. The light splitting film is disposed between a portion of the first surface of the first light guide plate and the second light guide plate and adjacent to the light incident surface. The light splitting film is configured to reflect a portion of the light beam and to penetrate at least a portion of the light from a portion of the first surface of the first light guide plate to the second light guide plate. The plurality of light splitting elements are disposed in a region of the first light guide plate that is not covered by the light splitting film, and each of the light splitting elements is connected between the first surface and the second surface. And a first acute angle is sandwiched between the surface of the light splitting element facing the light incident surface and the second surface. Each of the beam splitting elements is configured to pass a portion of the light beam and to reflect a portion of the light beam, and the light beam is emitted from the second surface by reflection of the light splitting element.

In an embodiment of the wearable device and the light guiding device of the present invention, the second light guide plate has a third surface and a fourth surface opposite to the third surface, the third surface is connected to the light splitting film, and the first surface is The two surfaces, the fourth surface, and the light-splitting film are parallel to each other.

In an embodiment of the wearable device and the light guiding member of the present invention, the second light guide plate has a third surface and a fourth surface opposite to the third surface, the third surface is connected to the light splitting film, and the fourth surface is used for Reflect at least part of the beam (image beam).

In an embodiment of the wearable device and the light guiding member of the present invention, the second light guiding plate has a fourth surface and a fourth surface opposite to the third surface, and a first side and a second side opposite to the first side, The three surfaces are connected to the light splitting film, and the first side surface and the second side surface are connected between the third surface and the fourth surface, and the first side surface is adjacent to the light incident surface.

In an embodiment of the wearable device and the light guiding member of the present invention, the second light guiding plate has a fourth surface and a fourth surface opposite to the third surface, and a first side and a second side opposite to the first side, The three surfaces are connected to the light splitting film, and the first side surface and the second side surface are connected between the third surface and the fourth surface, and the first side surface and the second side surface both have a light blocking structure.

In an embodiment of the wearable device and the light guiding member of the present invention, the first light guide plate and the second light guide plate have the same or different refractive indices.

In an embodiment of the wearable device and the light guiding member of the present invention, the refractive index of the first light guiding plate is smaller than the refractive index of the second light guiding plate.

In an embodiment of the wearable device and the light guiding member of the present invention, the light transmittance of the spectroscopic film is between 20% and 80%.

In an embodiment of the wearable device and the light guiding member of the present invention, the light reflecting film has a light reflectance of 80% to 20%.

In an embodiment of the wearable device and the light guiding member of the present invention, the light incident surface is inclined with respect to the first surface and has a second acute angle with the first surface.

In an embodiment of the wearable device and the light guiding member of the present invention, the angle of the second acute angle is twice the angle of the first acute angle.

In an embodiment of the wearable device and the light guiding member of the present invention, the first light guiding plate has a triangular column protruding structure protruding from the second surface, and the triangular column protruding structure is adjacent to the light incident surface.

In an embodiment of the wearable device of the present invention, the imaging assembly further includes a reflective component disposed between the display device and the light guiding component and configured to reflect the image beam from the display device to the light guiding component. Into the glossy surface.

In an embodiment of the wearable device of the present invention, the wearable device further includes a wearing frame, and the number of the at least one imaging assembly is two, and the imaging assembly is disposed on the wearing frame.

In an embodiment of the light guiding element of the present invention, among the plurality of spectral elements, the light transmittance of the spectral element closer to the light incident surface is higher.

In the light guiding device of the embodiment of the present invention, the second light guide plate adjacent to the light incident surface is added to the first light guide plate, and the light split film is disposed between the first light guide plate and the second light guide plate. In a light beam (such as an image beam) entering the light guiding element, part of the image beam is reflected in the first light guide plate, and part of the image beam passes through the first light guide plate and the beam splitting film to enter the second light guide plate. And then reflected back into the first light guide plate via the second light guide plate. Since the transmission path of the image beam is increased, when the image beam is transmitted to the beam splitting element, the filling rate of the light receiving surface of the beam splitting element can be improved, thereby improving the problem that the imaging of the prior art has bright and dark lines and the image brightness is uneven. . Since the wearable device of the embodiment of the present invention uses the light guiding element, the problem of image brightness unevenness in the prior art can be improved.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

1 is a schematic view of a wearable device in accordance with an embodiment of the present invention. Referring to FIG. 1, the wearable device 3 of the present embodiment includes at least one imaging assembly 31, and FIG. 1 is exemplified by two imaging assemblies 31, but the present invention does not limit the number of imaging assemblies 31. In the present embodiment, the wearable device 3 may further include a wearing frame 33, and the imaging assembly 31 is disposed on the wearing frame 33. In the present embodiment, the wearing frame 33 can be worn, for example, on the head of the user, so that the eyes of the user can respectively view the images provided by the two imaging assemblies 31 in FIG. The present invention does not limit the specific structure of the wearing frame 33.

Regarding the above-described imaging assembly 31, the following embodiments are exemplified. 2 is a schematic illustration of an imaging assembly in accordance with an embodiment of the present invention. Referring to FIG. 2, the imaging assembly 31 includes a display device 311 and a light guiding element 313. In this embodiment, the display device 311 is configured to provide an image light beam L, and the light guiding element 313 is used to guide the image light beam L so that the user's eyes can receive the image light beam L. In this embodiment, the display device 311 may be a projection optical engine, a projection unit, or other kinds of display devices, wherein the projection light projector/projection unit may be a transmissive light valve (eg, a transmissive liquid crystal display panel), a reflective light valve (such as a single crystal germanium liquid crystal panel or a digital micromirror device) or a self-luminous display panel (such as an organic light emitting diode display panel), but the present invention is not limit.

In the above, the light guiding element 313 includes a first light guide plate 3131, a second light guide plate 3133, a light splitting film 3135, and a plurality of light splitting elements 3137. In the present embodiment, the first light guide plate 3131 and the second light guide plate 3133 are, for example, waveguide elements, which may be light transmissive materials, but the invention is not limited thereto. The first light guide plate 3131 has a first surface B1 and a second surface B2 opposite to the first surface B1, and has a light incident surface C1 connected between the first surface B1 and the second surface B2, wherein the light incident surface C1 is used for The image beam L is penetrated. The second light guide plate 3133 is disposed on a portion of the first surface B1 of the first light guide plate 3131 and is located on the transmission path of the image light beam L. The light splitting film 3135 is disposed between a portion of the first surface B1 and the second light guide plate 3133 of the first light guide plate 3131 and adjacent to the light incident surface C1. The light splitting film 3135 is configured to reflect a portion of the image light beam L and penetrate at least a portion of the image light beam L from the portion of the first surface B1 of the first light guide plate 3131 to the second light guide plate 3133. Further, the plurality of light splitting elements 3137 are disposed in a region of the first light guide plate 3131 that is not covered by the light splitting film 3135, and each of the light splitting elements 3137 is connected between the first surface B1 and the second surface B2. A first acute angle θ1 is sandwiched between the surface D of the light splitting element 3137 facing the light incident surface C1 and the second surface B2. Each of the light splitting elements 3137 is configured to penetrate a portion of the image light beam L and to reflect a portion of the image light beam L, and the image light beam L is emitted from the second surface B2 via reflection of the light splitting element 3137. In this embodiment, the user's eyes can view the image by receiving the image light beam L emitted from the second surface B2 of the first light guide plate 3131.

In the embodiment, the second light guide plate 3133 covers the light splitting film 3135, but the invention is not limited thereto. In this embodiment, the material of the first light guide plate 3131 and the second light guide plate 3133 may be plastic, glass, acrylic or other permeable material, but the invention is not limited thereto. In the present embodiment, the light incident surface C1 of the first light guide plate 3131 is inclined with respect to the first surface B1, for example, and a second acute angle θ2 is sandwiched between the light incident surface C1 and the first surface B1. In the present embodiment, the angle of the second acute angle θ2 is, for example, twice the angle of the first acute angle θ1. For example, the angle of the first acute angle θ1 is, for example, 30 degrees, and the angle of the second acute angle θ2 is, for example, 60 degrees. However, the angle of the second acute angle θ2 may be adjusted depending on the incident path of the image light beam L, and is not limited to 60 degrees.

The second light guide plate 3133 has, for example, a third surface B3 and a fourth surface B4 opposite to the third surface B3. In the present embodiment, the third surface B3 is connected to the light-splitting film 3135, and the first surface B1, the second surface B2, the fourth surface B4, and the light-splitting film 3135 are, for example, parallel to each other. In the present embodiment, the third surface B3 and the first surface B1, the second surface B2, and the fourth surface B4 are parallel to each other. In other embodiments, at least a portion of the first surface B1, at least a portion of the second surface B2, at least a portion of the fourth surface B4, and/or at least a portion of the light-splitting film 3135 may not be parallel to each other, depending on different design requirements. Adjust the transmission path of the image beam L. In this embodiment, the second light guide plate 3133 has a first side surface E1 and a second side surface E2 opposite to the first side surface E1. The first side surface E1 and the second side surface E2 are connected to the third surface B3 and the fourth surface B4. between. In this embodiment, the first side surface E1 is adjacent to the light incident surface C1, and the second side surface E2 is away from the light incident surface C1. In addition, the first side surface E1 and the second side surface E2 are parallel to each other, for example, and the first side surface E1 and the second side surface E2 are perpendicular to the third surface B3 and the fourth surface B4, for example, but the invention is not limited thereto. However, in other embodiments, the first side surface E1 may not be parallel to the second side surface E2 to achieve the effect that the light beam does not penetrate the first side surface E1 and the second side surface E2, but the invention is not limited thereto.

3 is a schematic illustration of an imaging assembly in accordance with another embodiment of the present invention. In this embodiment, the first side surface E1 and the second side surface E2 of the second light guide plate 3133 may respectively have a light-proof penetration structure E11. In this embodiment, the light-proof penetrating structure E11 can be formed by atomizing the first side surface E1 and the second side surface E2; in other embodiments, the light-shielding layer can be applied to the first side surface E1 and the second layer. The side surface E2 is formed in a manner other than the appropriate manner, for example, the light shielding layer may be a black substance or a black tape may be used as the light shielding layer; however, the light-proof penetration structure of the present invention is not limited to the above-described formation method. In this embodiment, the light-proof penetration structure E11 can be used to prevent the image light beam L in the second light guide plate 3133 from leaking light from the first side surface E1 and the second side surface E2, and can prevent external ambient light from being separated from the first side surface E1. The second side surface E2 enters the second light guide plate 3133.

Referring to FIG. 2 to FIG. 3 simultaneously, in the embodiment, the beam splitting film 3135 is, for example, a half mirror having a light beam that can reflect a part of the light beam and a partial light beam, and the light splitting film 3135 can be formed by coating. The first light guide plate 3131 and the second light guide plate 3133 are provided, but the present invention does not limit the manner in which the light split film is formed. In the present embodiment, the beam splitting film 3135 has a characteristic of allowing the beam portion to partially penetrate. In the present embodiment, the light transmittance of the spectral film 3135 is 20 to 80% and the light reflectance is 80 to 20%. Furthermore, in an ideal situation (for example, without considering light loss), in an embodiment, the light-splitting film 3135 may have optical characteristics of 20% light transmittance and 80% light reflectance; In an example, the light splitting film 3135 may have an optical characteristic of 50% light transmittance and 50% light reflectance; in an embodiment, the light splitting film 3135 may have optical characteristics of 80% light transmittance and 20% light reflectance. .

In the present embodiment, the plurality of light splitting elements 3137 are, for example, arrays of light splitting elements arranged in parallel with each other in a region of the first light guide plate 3131 that is not covered by the light splitting film 3135. In the present embodiment, in order to allow the image light beam L emitted from the second surface B2 after being reflected by the plurality of light splitting elements 3137 to have a uniform light intensity, the light transmittance of the light splitting element 3137 which is closer to the light incident surface C1 can be designed. The higher the light reflectivity is, the lower the light reflectance is. The light splitting element 3137 which is designed to be farther from the light incident surface C1 has a higher light reflectance and a lower light transmittance. In other embodiments, the spectroscopic element 3137 that is furthest from the incident surface C1 may be an optical element having high reflectivity, and may even be a reflective element.

In this embodiment, when the image light beam L entering the first light guide plate 3131 from the light incident surface C1 is transmitted to the light splitting film 3135, the light splitting film 3135 reflects a part of the image light beam L (such as the light beam L1), and part of the image light beam L (e.g., the light beam L2) passes through the light splitting film 3135 to enter the third surface B3 of the second light guide plate 3133. In this embodiment, part of the image light beam L (such as the light beam L2) in the second light guide plate 3133 is totally reflected on the fourth surface B4, and is sequentially transmitted to the third surface B3 and the light splitting film 3135, wherein the image is transmitted. A part of the light beam to the splitting film 3135 passes through the beam splitting film 3135 and returns to the first light guiding plate 3131. Since the image beam L entering the light guiding element 313 is partially transmitted by the partial reflection portion every time it is transmitted to the beam splitting film 3135, the image beam L has a plurality of transmission paths, thereby having a light-expanding effect. The image beam L transmitted to the spectroscopic element 3137 can be more completely incident on the light-receiving surface of the spectroscopic element 3137 (i.e., the surface D facing the incident surface C1). In this way, the problem that the image beam emitted from the second surface of the conventional light guiding element has a bright and dark pattern can be solved/improved, thereby improving the image quality.

The imaging component 31 of the present embodiment can be applied to a Virtual Reality (VR) device or an Augmented Reality (AR) device. In an embodiment applied to the virtual reality, the light guiding element 313 may further be provided with a light shielding layer (not shown) to shield a portion of the first surface B1 of the first light guide plate 3131 that is not covered by the light splitting film 3135 (for example, corresponding The first surface B1) of the beam splitting element 3137 prevents ambient light from entering the eyes of the user. In an embodiment applied to a see through augmented reality, the reflectance of the beam splitting element 3137 is preferably not more than 50%.

In the above, the refractive index of the first light guide plate 3131 and the refractive index of the second light guide plate 3133 may be the same or different, as exemplified below. 4 is a schematic view showing a state in which an image beam travels in a first light guide plate, a second light guide plate, and a spectroscopic film according to an embodiment of the invention. Referring to FIG. 4, in the present embodiment, the refractive index of the first light guide plate 3131 is, for example, smaller than the refractive index of the second light guide plate 3133. Thus, when the image light beam L enters the second light guide plate 3133, it approaches the normal direction N. The direction refraction can increase the number of times the image beam L is transmitted to the beam splitting film 3135, enhance the diffusion effect of the image beam L, and further improve/solve the problem that the image of the conventional light guiding element has bright and dark lines. In one embodiment, the refractive index of the first light guide plate 3131 is, for example, between 1.62 and 1.75, and the refractive index of the second light guide plate 3133 is, for example, between 1.7 and 1.82, wherein the refractive index of the first light guide plate 3131 is, for example, less than The refractive index of the two light guide plates 3133, but the invention is not limited thereto. In other embodiments, the refractive index of the first light guide plate 3131 may be greater than the refractive index of the second light guide plate 3133, but the invention is not limited thereto.

Figure 5 is a schematic illustration of a light guiding element in accordance with an embodiment of the present invention. Referring to FIG. 5, the light guiding element 313a of the present embodiment is similar to the light guiding element 313 of FIG. 2, and the main difference is that the first light guiding plate 3131a of the light guiding element 313a has a triangular prism protruding structure 3139 protruding from the second surface B2. The triangular prism protruding structure 3139 is adjacent to the light incident surface C2. In this embodiment, the light incident surface C2 extends to the top end of the triangular prism protruding structure 3139, for example, so that the area of the light incident surface C2 can be increased, thereby increasing the irradiation area of the image light beam L incident on the light surface C2, and improving The filling rate of the receiving faces of the respective light-splitting elements 3137 is further improved/solved in the case where the imaging of the conventional light guiding elements is bright and dark. Further, the light guiding element 313a of the present embodiment can also be applied to the imaging unit 31 of FIG. 2 instead of the light guiding element 313 of FIG.

Figure 6 is a schematic illustration of an imaging assembly in accordance with another embodiment of the present invention. Referring to FIG. 6 , the imaging component 31 a of the present embodiment is similar to the imaging component 31 of FIG. 3 . The main difference is that the imaging component 31 a of the embodiment further includes a reflective component 315 , and the reflective component 315 is disposed on the display device 311 and the light guiding component. Between 313, and used to reflect the image light beam L from the display device 311 to the light incident surface C1 of the light guiding element 313 of FIG. In addition, the light guiding element 313 of the embodiment can also be replaced with the light guiding element 313a of FIG.

In the light guiding device of the embodiment of the present invention, a second light guide plate adjacent to the light incident surface is added to the first light guide plate, and a light splitting film is disposed between the first light guide plate and the second light guide plate. Therefore, part of the image beam will be reflected in the first light guide plate, and part of the image beam will pass through the first light guide plate and the beam splitting film to enter the second light guide plate. And then reflected back into the first light guide plate via the second light guide plate. Since the transmission path of the image beam is increased, when the image beam is transmitted to the beam splitting element, the filling rate of the light receiving surface of the beam splitting element can be improved, so as to improve the image of the prior art, which has bright and dark lines and causes uneven brightness of the image. . Since the wearable device of the embodiment of the present invention uses the light guiding element, the problem of image brightness unevenness in the prior art can be improved. In addition, in the embodiment of the present invention, a triangular prism protruding structure is added on the second surface of the first light guide plate and adjacent to the light incident surface, so that the area of the light incident surface is increased to improve the filling rate of the light receiving surface of the light splitting component. Therefore, the problem of bright and dark lines can be further improved.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention. In addition, the terms "first", "second", "third", "fourth" and the like mentioned in the specification or the scope of the patent application are only used to name the elements or to distinguish different embodiments or ranges. It is not intended to limit the upper or lower limit on the number of components.

3: wearable device 31, 31a: imaging unit 311: display device 313, 313a: light guiding elements 3131, 3131a: first light guide plate 3133: second light guide plate 3135: beam splitting film 3137: light splitting element 3139: triangular prism protruding structure 315: Reflecting element 33: wearing frame body B1: first surface B2: second surface B3: third surface B4: fourth surface C1, C2: light incident surface D: surface E1: first side surface E2: second side E11: Light-proof penetration structure θ1: first acute angle θ2: second acute angle L: image light beam L1, L2: light beam N: normal direction

1 is a schematic view of a wearable device in accordance with an embodiment of the present invention. 2 is a schematic illustration of an imaging assembly in accordance with an embodiment of the present invention. 3 is a schematic illustration of an imaging assembly in accordance with another embodiment of the present invention. 4 is a schematic view showing a state in which an image beam travels in a first light guide plate, a second light guide plate, and a spectroscopic film according to an embodiment of the invention. Figure 5 is a schematic illustration of a light guiding element in accordance with an embodiment of the present invention. Figure 6 is a schematic illustration of an imaging assembly in accordance with another embodiment of the present invention.

31: imaging unit 311: display device 313: light guiding element 3131: first light guide plate 3133: second light guide plate 3135: spectroscopic film 3137: spectroscopic element B1: first surface B2: second surface B3: third surface B4: Fourth surface C1: light incident surface D: surface E1: first side surface E2: second side surface L: image light beams L1, L2: light beam θ1: first acute angle θ2: second acute angle

Claims (27)

A wearable device comprising: at least one imaging component, the imaging component comprising: a display device for providing an image beam; and a light guiding component for guiding the image beam, the light guiding component comprising: a first The light guide plate has a first surface and a second surface opposite to the first surface, and has a light incident surface connected between the first surface and the second surface, wherein the light incident surface is used for a second light guide plate is disposed on a portion of the first surface of the first light guide plate and located on a transmission path of the image light beam; a light splitting film disposed on a portion of the first light guide plate Between the first surface and the second light guide plate, adjacent to the light incident surface, wherein the light splitting film is configured to reflect a portion of the image light beam, and to make a portion of the first surface from the first light guide plate At least a portion of the image beam penetrates the second light guide plate; and a plurality of light splitting elements are disposed in a region of the first light guide plate that is not covered by the light splitting film, and each of the light splitting elements is coupled to the first surface And a first acute angle between the surface of the light splitting surface facing the light incident surface and the second surface, wherein each of the light splitting elements is configured to pass a portion of the image beam And transparently reflecting the portion of the image beam, and the image beam is emitted from the second surface by reflection of the beam splitting elements. The wearable device of claim 1, wherein the second light guide plate has a third surface and a fourth surface opposite to the third surface, the third surface is coupled to the light splitting film, and the first surface A surface, the second surface, the fourth surface, and the light splitting film are parallel to each other. The wearable device of claim 1, wherein the second light guide plate has a third surface and a fourth surface opposite to the third surface, the third surface is coupled to the light splitting film, and the first surface The four surfaces are used to reflect at least a portion of the image beam. The wearable device of claim 1, wherein the second light guide plate has a third surface and a fourth surface opposite to the third surface, and a first side and a first side opposite to the first side The second surface is connected to the light splitting film, and the first side surface and the second side surface are connected between the third surface and the fourth surface, and the first side surface is adjacent to the light incident surface. The wearable device of claim 1, wherein the second light guide plate has a third surface and a fourth surface opposite to the third surface, and a first side and a first side opposite to the first side a second surface, the third surface is connected to the light splitting film, the first side surface and the second side surface are connected between the third surface and the fourth surface, and the first side surface and the second side surface are both protected from light Penetration structure. The wearable device of claim 1, wherein the first light guide plate and the second light guide plate have the same or different refractive indices. The wearable device of claim 1, wherein the first light guide plate has a refractive index smaller than a refractive index of the second light guide plate. The wearable device of claim 1, wherein the light-splitting film has a light transmittance of 20% to 80%. The wearable device according to claim 1, wherein the light-reflecting film has a light reflectance of 80% to 20%. The wearable device of claim 1, wherein the light incident surface is inclined with respect to the first surface and has a second acute angle with the first surface. The wearable device of claim 10, wherein the angle of the second acute angle is twice the angle of the first acute angle. The wearable device of claim 1, wherein the first light guide plate has a triangular prism protruding structure protruding from the second surface, the triangular prism protruding structure being adjacent to the light incident surface. The wearable device of claim 1, wherein the imaging component further comprises a reflective component disposed between the display device and the light guiding component and configured to reflect the image beam from the display device To the light incident surface of the light guiding element. The wearable device of claim 13, further comprising a wearing frame, the number of the at least one imaging component being two, and the imaging components are disposed on the wearing frame. A light guiding element is adapted to guide a light beam, the light guiding element comprising: a first light guiding plate having a first surface and a second surface opposite to the first surface, and having a connection to the first surface and the a light incident surface between the second surface, wherein the light incident surface is used to penetrate the light beam; a second light guide plate disposed on a portion of the first surface of the first light guide plate and located at the light beam a light distribution film disposed between a portion of the first surface of the first light guide plate and the second light guide plate adjacent to the light incident surface, wherein the light splitting film is configured to reflect a portion of the light beam, And a portion of the first surface from the first light guide plate to penetrate the light beam to the second light guide plate; and a plurality of light splitting elements disposed at the first light guide plate without the light splitting film Each of the light splitting elements is connected between the first surface and the second surface, and a first acute angle is sandwiched between a surface of each of the light splitting elements facing the light incident surface and the second surface. Each of the light splitting elements is used to make A portion of the light beam penetrates and is used to reflect a portion of the light beam, and the light beam exits the second surface by reflection of the light splitting elements. The light guiding device of claim 15, wherein the second light guide plate has a third surface and a fourth surface opposite to the third surface, the third surface is connected to the light splitting film, and the first surface A surface, the second surface, the fourth surface, and the light splitting film are parallel to each other. The light guiding device of claim 15, wherein the second light guide plate has a third surface and a fourth surface opposite to the third surface, the third surface is connected to the light splitting film, and the first surface The four surfaces are used to reflect at least a portion of the beam. The light guiding device of claim 15, wherein the second light guiding plate has a third surface and a fourth surface opposite to the third surface, and a first side and a first side opposite to the first side The second surface is connected to the light splitting film, and the first side surface and the second side surface are connected between the third surface and the fourth surface, and the first side surface is adjacent to the light incident surface. The light guiding device of claim 15, wherein the second light guiding plate has a third surface and a fourth surface opposite to the third surface, and a first side and a first side opposite to the first side a second surface, the third surface is connected to the light splitting film, the first side surface and the second side surface are connected between the third surface and the fourth surface, and the first side surface and the second side surface are both protected from light Penetration structure. The light guiding element of claim 15, wherein the first light guide plate and the second light guide plate have the same or different refractive indices. The light guiding element of claim 15, wherein the first light guide plate has a refractive index smaller than a refractive index of the second light guide plate. The light guiding element according to claim 15, wherein the light-splitting film has a light transmittance of 20% to 80%. The light guiding element according to claim 15, wherein the light reflecting film has a light reflectance of 80% to 20%. The light guiding element of claim 15, wherein the light incident surface is inclined with respect to the first surface, and a second acute angle is interposed between the light incident surface and the first surface. The light guiding element of claim 24, wherein the angle of the second acute angle is twice the angle of the first acute angle. The light guiding component of claim 15, wherein the first light guiding plate has a triangular prism protruding structure protruding from the second surface, and the triangular prism protruding structure is adjacent to the light incident surface. The light guiding element according to claim 15, wherein among the light separating elements, the light transmittance of the light separating element closer to the light incident surface is higher.