Optical equipment

Abstract

An optical device is provided. The optical device includes: a lens including a first surface and a plurality of side surfaces; a display device disposed on a first side surface among the plurality of side surfaces of the lens and configured to provide light to the first side surface of the lens; an optical path control device disposed between the first side surface of the lens and the display device and configured to selectively change the optical path of a virtual image of the display device; and a plurality of reflective members disposed in the lens and configured to reflect light of the display device to the first surface.

Description

Technical Field

[0001] The present disclosure relates to optical devices. Background Art

[0002] Augmented reality is a technology that superimposes a virtual image on a real image viewed by the user's eyes and displays them as a single image. The virtual image may be an image in the form of text or graphics, and the real image may be information related to an actual object observed in the field of view of the device. Augmented reality can be implemented using a head-mounted display (HMD), a head-up display (HUD), etc.

[0003] Recently, there is a demand for expanding the field of view (FOV) of a virtual image viewed by a user through augmented reality. However, in this case, the size of an optical device for implementing augmented reality may be increased. In addition, in order to adjust the depth of a virtual image viewed by a user through augmented reality, it is necessary to use a virtual image that applies binocular parallax. In other words, it is difficult to adjust the depth of a virtual image viewed by one eye of a user through augmented reality. Summary of the invention

[0004] Technical issues

[0005] Aspects of the present disclosure provide an optical device capable of expanding a field of view (FOV) of a virtual image viewed by a user through augmented reality without increasing the size of the optical device.

[0006] Aspects of the present disclosure also provide an optical device capable of adjusting the depth of a virtual image viewed by one eye of a user through augmented reality.

[0007] It should be noted that aspects of the present disclosure are not limited to the above-mentioned aspects, and other not-mentioned aspects of the present disclosure will be clearly understood by those skilled in the art from the following description.

[0008] Technical Solution

[0009] An optical device according to an embodiment for solving the above-mentioned problem includes: a lens including a first surface and a plurality of side surfaces; a display device, which is arranged on a first side surface among the plurality of side surfaces of the lens and is configured to provide light to the first side surface of the lens; an optical path control device, which is arranged between the first side surface of the lens and the display device and is configured to selectively change the optical path of a virtual image of the display device, and a plurality of reflective members, which are arranged in the lens and are configured to reflect the light of the display device to the first surface.

[0010] The optical path control device may output a first virtual image of the display device without changing the optical path during a first period, and may output a second virtual image of the display device to the optical path in the first direction during a second period.

[0011] The plurality of reflective members may include a first reflective member configured to reflect the first virtual image to the first surface during a first period and a second reflective member configured to reflect the second virtual image to the first surface during a second period.

[0012] The second reflective member may be configured to reflect a second virtual image reflected from a second side surface among the plurality of side surfaces to the first surface.

[0013] The first side surface and the second side surface may be surfaces facing each other.

[0014] The optical device may further include a first reflective sheet disposed on the second side surface of the lens.

[0015] The second virtual image may be reflected from the first surface of the lens or a second surface opposite to the first surface and propagate to the second side surface.

[0016] The second virtual image may be reflected from a third side surface among the plurality of side surfaces and propagate to the second side surface.

[0017] The optical apparatus may further include a second reflective sheet disposed on a third side surface of the lens.

[0018] The light path control device may output a third virtual image of the display device in the second direction during a third period, and may output a fourth virtual image of the display device in the third direction during a fourth period.

[0019] The plurality of reflective members may further include a third reflective member configured to reflect the third virtual image to the first surface during a third period and a fourth reflective member configured to reflect the fourth virtual image to the first surface during a fourth period.

[0020] The third reflecting member may be configured to reflect the third virtual image reflected from the first surface to the first surface. The fourth reflecting member may be configured to reflect the fourth virtual image reflected from a second surface opposite to the first surface to the first surface.

[0021] The fourth virtual image may be reflected from the first surface of the lens and propagate to the second side surface, and then the fourth virtual image may be reflected from the second side surface and propagate to a second surface opposite to the first surface.

[0022] The optical path control device may include a first sub-optical path control device having a first electrode arranged on a first substrate, a second electrode arranged on a second substrate facing the first substrate, a first liquid crystal layer arranged between the first electrode and the second electrode, and a first single refractive index layer arranged on the first liquid crystal layer.

[0023] A boundary between the first liquid crystal layer and the first single refractive index layer may be inclined at a first angle with respect to a thickness direction of the lens.

[0024] A boundary between the first liquid crystal layer and the first single refractive index layer may have a prism mountain shape.

[0025] The optical device may further include a polarizing plate disposed on the second substrate of the first sub-optical path control device and configured to transmit light vibrating in a horizontal direction.

[0026] When the first driving voltage is applied to the first electrode and the second driving voltage is applied to the second electrode, the liquid crystals of the first liquid crystal layer may be arranged in a vertical direction. When the first driving voltage is not applied to the first electrode and the second driving voltage is not applied to the second electrode, the liquid crystals of the first liquid crystal layer may be arranged in a horizontal direction.

[0027] The refractive index of the first single refractive index layer may be the same as the ordinary refractive index of the liquid crystals of the first liquid crystal layer.

[0028] The optical path control device may include a second sub-optical path control device, which has a third electrode arranged on a third substrate, a fourth electrode arranged on a fourth substrate facing the third substrate, a second liquid crystal layer arranged between the third electrode and the fourth electrode, and a second single refractive index layer arranged on the second liquid crystal layer.

[0029] A boundary between the second liquid crystal layer and the second single refractive index layer may be inclined at a second angle different from the first angle with respect to a thickness direction of the lens.

[0030] The boundary between the first liquid crystal layer and the first single refractive index layer may have a first prism mountain shape. The boundary between the second liquid crystal layer and the second single refractive index layer may have a second prism mountain shape. The pitch of the first prism mountain may be different from the pitch of the second prism mountain.

[0031] The optical apparatus may further include a convex lens disposed between the display device and the optical path control component.

[0032] An optical device for solving the above-mentioned problem according to an embodiment includes: a lens including a first lens unit, a second lens unit, and a third lens unit disposed between the first lens unit and the second lens unit; a first display device disposed on a first side surface of the first lens unit and configured to provide a virtual image to the first side surface of the first lens unit; a second display device disposed on a first side surface of the second lens unit and configured to provide a virtual image to the first side surface of the second lens unit; a first optical path control device disposed between the first side surface of the first lens unit and the first display device and configured to selectively change the optical path of the virtual image of the first display device; a second optical path control device disposed between the first side surface of the second lens unit and the second display device and configured to selectively change the optical path of the virtual image of the second display device; and a reflective member disposed in the first lens unit. One of the reflective members in the first lens unit is configured to reflect and output the virtual image of the first display device to the first surface of the first lens unit, and the other of the reflective members is configured to reflect and output the virtual image of the second display device to the first surface of the first lens unit.

[0033] The optical device may further include a reflective member disposed in the second lens unit. One of the reflective members in the second lens unit may be configured to reflect and output a virtual image of the second display device to a first surface of the second lens unit. Another of the reflective members in the second lens unit may be configured to reflect and output a virtual image of the first display device to a first surface of the second lens unit.

[0034] Beneficial Effects

[0035] Based on the optical device according to the embodiment, the user can view a virtual image in which the first virtual image displayed on the display panel during the first period and the second virtual image displayed on the display panel during the second period are combined through one eye of the user. Therefore, the user can view the virtual image IM in an area wider than the field of view (FOV) of the originally viewed virtual image. Accordingly, the field of view (FOV) of the virtual image IM viewed by the user through augmented reality can be expanded without increasing the size of the optical device.

[0036] Based on the optical device according to the embodiment, by controlling the liquid crystal of the liquid crystal layer, the light incident on the optical path control device can be directly output or refracted. In other words, the optical path control device can be used to selectively change the path of the light output from the display panel. Therefore, the optical path from the display panel from which the first virtual image is emitted to the retina of one eye of the user to which the first virtual image is provided and the optical path from the display panel from which the second virtual image is emitted to the retina of one eye of the user to which the second virtual image is provided can be different. Therefore, the depth of the first virtual image viewed by the user and the depth of the second virtual image can be different. That is, the user can view multiple virtual images with different depths.

[0037] The beneficial effects according to the present disclosure are not limited to the above-mentioned beneficial effects, and various other beneficial effects are included herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a perspective view showing an optical device according to one embodiment.

[0039] Figure 2 is an exploded perspective view showing an optical device according to one embodiment.

[0040] Figure 3 An example of a method of providing augmented reality using an optical device according to one embodiment is shown.

[0041] Figure 4 It is shown Figure 1 An exploded perspective view of an example of a right-eye lens and a reflective member.

[0042] Figure 5 It is shown Figure 4 A side view of an example of a right-eye lens and a reflective member.

[0043] Figure 6 It is shown Figure 1 A plan view of an example of a first display device.

[0044] Figure 7 It is shown Figure 6 A cross-sectional view of a portion of a first display area.

[0045] Figure 8 and Fig. 9 Shows Figure 2 An example of a first optical path control device.

[0046] Fig.10 is an exploded perspective view showing an optical device according to one embodiment.

[0047] Fig.11An example of a method of providing augmented reality using an optical device according to one embodiment is shown.

[0048] Fig.12 is an exploded perspective view showing an optical device according to one embodiment.

[0049] Fig.13 and Fig.14 An example of a method of providing augmented reality using an optical device according to one embodiment is shown.

[0050] Fig.15 and Fig.16 An example of a method of providing augmented reality using an optical device according to one embodiment is shown.

[0051] Fig.17 is an exploded perspective view showing an optical device according to one embodiment.

[0052] Figures 18 to 21 An example of a method of providing augmented reality using an optical device according to one embodiment is shown.

[0053] Figure 22 to Figure 25 Shows Fig.17 An example of a first optical path control device.

[0054] Fig.26 is an exploded perspective view showing an optical device according to one embodiment.

[0055] Fig. 27 It is shown Fig.26 A stereogram of an example of a lens.

[0056] Figures 28 to 33 An example of a method of providing augmented reality using an optical device according to one embodiment is shown.

[0057] Figure 34 to Figure 39 Shows Fig.26 An example of a first optical path control device. DETAILED DESCRIPTION

[0058] The advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described in detail below in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, which are only intended to make the disclosure of the present invention complete, and the common knowledge in the technical field to which the present invention belongs is used to fully inform the owner of the scope of the present invention, and the present invention is limited only by the scope of the claims.

[0059] Reference to an element or layer being "on" another element or layer includes any intervening layers or other elements being directly on or between the element or layer and the other element or layer. The same reference numerals represent the same elements throughout. The shapes, sizes, proportions, angles, quantities, etc. disclosed in the drawings for illustrating the embodiments are exemplary, and therefore the present invention is not limited to what is shown.

[0060] Although the terms first, second, etc. are used to describe various elements, these elements must not be limited by these terms. These terms are only used to distinguish one component from another component. Therefore, within the spirit of the present invention, the first component mentioned below should be the second component.

[0061] Each feature of various embodiments of the present invention may be combined partially or as a whole or combined with each other, various interconnections and drives in technology are possible, and each of the embodiments may be implemented independently of each other, or may be implemented together in an associated relationship.

[0062] Figure 1 is a perspective view showing an optical device according to one embodiment. Figure 2 is an exploded perspective view showing an optical device according to one embodiment.

[0063] Reference Figure 1 and Figure 2 According to one embodiment, an augmented reality providing device 1 includes a supporting frame 20, a right-eye lens frame 21, a left-eye lens frame 22, a first temple 31, a second temple 32, a right-eye lens 110, a left-eye lens 120, a first display device 210, a second display device 220, a first convex lens 310, a second convex lens 360, a first optical path control device 510, a second optical path control device 520 and reflective components 411, 412, 421 and 422.

[0064] The terms "above", "top" and "upper surface" as used herein refer to the Z-axis direction, and the terms "below", "bottom" and "lower surface" as used herein refer to the direction opposite to the Z-axis direction. In addition, the term "left" as used herein refers to the direction opposite to the X-axis direction, the term "right" as used herein refers to the X-axis direction, the term "up" as used herein refers to the Y-axis direction, and the term "down" as used herein refers to the direction opposite to the Y-axis direction. The X-axis direction may be a width direction of each of the right-eye lens 110 and the left-eye lens 120, the Y-axis direction may be a height direction of each of the right-eye lens 110 and the left-eye lens 120, and the Z-axis direction may be a thickness direction of each of the right-eye lens 110 and the left-eye lens 120.

[0065] The support frame 20 is used to support the right-eye lens 110 and the left-eye lens 120 in cooperation with the right-eye lens frame 21 and the left-eye lens frame 22. The right-eye lens 110 may be surrounded by the support frame 20 and the right-eye lens frame 21. The left-eye lens 120 may be surrounded by the support frame 20 and the left-eye lens frame 22.

[0066] The support frame 20 may be disposed on upper side surfaces of the right-eye lens 110 and the left-eye lens 120. The support frame 20 may be elongated in a width direction of the right-eye lens 110 (X-axis direction).

[0067] The right-eye lens frame 21 may be disposed on the left side surface, the lower side surface, and the right side surface of the right-eye lens 110. The right-eye lens frame 21 may be coupled to the support frame 20. The left-eye lens frame 22 may be disposed on the left side surface, the lower side surface, and the right side surface of the left-eye lens 120. The left-eye lens frame 22 may be coupled to the support frame 20. Each of the right-eye lens frame 21 and the left-eye lens frame 22 may include a nose pad.

[0068] Despite Figure 2 2 and 3. It is shown that the support frame 20, the right-eye lens frame 21, and the left-eye lens frame 22 are separately formed and coupled, but the present disclosure is not limited thereto. The support frame 20, the right-eye lens frame 21, and the left-eye lens frame 22 may be formed integrally with each other.

[0069] The first temple 31 may be fixed to the left end of the lower side surface of the support frame 20. The second temple 32 may be fixed to the right end of the lower side surface of the support frame 20. Each of the first temple 31 and the second temple 32 may be fixed to the support frame 20 by a fixing member such as a screw.

[0070] Each of the support frame 20, the right-eye lens frame 21, the left-eye lens frame 22, the first temple 31, and the second temple 32 may include plastic, metal, or both. The right-eye lens frame 21 and the left-eye lens frame 22 may be omitted.

[0071] Each of the right-eye lens 110 and the left-eye lens 120 may be formed of glass or plastic in a transparent or translucent manner. Therefore, the user can view a real image through the right-eye lens 110 and the left-eye lens 120. Considering the visual acuity of the user, the right-eye lens 110 and the left-eye lens 120 may have refractive power.

[0072] Each of the right-eye lens 110 and the left-eye lens 120 may be formed as a hexahedron having a first surface, a second surface, and first to fourth side surfaces that are quadrilaterals. Figure 3) may be an exit surface from which light of the first display device 210 is emitted by the reflective members 411 and 412 of the right-eye lens 110. The second surface of the right-eye lens 110 may be an outer surface of the right-eye lens 110. The first surface of the left-eye lens 120, which is a surface facing the left eye of the user, may be an exit surface from which light of the second display device 220 is emitted by the reflective members 421 and 422 of the left-eye lens 120. The second surface of the left-eye lens 120 may be an outer surface of the left-eye lens 120.

[0073] Each of the right-eye lens 110 and the left-eye lens 120 is not limited to Figure 1 and Figure 2 , and may be formed as a polyhedron having a first surface, a second surface, and a side surface formed in a polygonal shape other than a quadrilateral shape. In addition to a polyhedron, each of the right-eye lens 110 and the left-eye lens 120 may be formed in other shapes such as a cylinder, an elliptical cylinder, a semi-circular cylinder, a semi-elliptical cylinder, a deformed cylinder, or a deformed semi-circular cylinder. The deformed cylinder and the deformed semi-circular cylinder refer to a cylinder and a semi-circular cylinder having a non-constant diameter.

[0074] Reflective members 411 and 412 are provided in the right eye lens 110, and reflective members 421 and 422 are provided in the left eye lens 120. Each of the reflective members 411, 412, 421, and 422 may be a small mirror such as a pin mirror. Each of the reflective members 411, 412, 421, and 422 may be formed to have a size smaller than the pupil of the right eye RE or the left eye. For example, the maximum width of each of the reflective members 411, 412, 421, and 422 may be tens of micrometers to hundreds of micrometers. Since the user's pupil is focused on the real image, it is difficult to identify the reflective members 411, 412, 421, and 422. Although Figure 1 and Figure 2 It is illustrated that each of the reflective members 411 , 412 , 421 , and 422 has a circular shape in a plan view, but each of the reflective members 411 , 412 , 421 , and 422 may have an elliptical shape or a polygonal shape different from the circular shape in a plan view.

[0075] The reflective members 411 and 412 of the right-eye lens 110 may reflect an image displayed on the first display device 210 and provide the image to the user's right eye RE. The reflective members 421 and 422 of the left-eye lens 120 may reflect an image displayed on the second display device 220 and provide the image to the user's left eye.

[0076] although Figure 1 and Figure 2It is shown that eight reflection members 411 and 412 are provided in the right-eye lens 110 and eight reflection members 421 and 422 are provided in the left-eye lens 120, but the number of reflection members 411 and 412 provided in the right-eye lens 110 and the number of reflection members 421 and 422 provided in the left-eye lens 120 are not limited thereto.

[0077] The first optical path control device 510 may be disposed on one side surface of the right-eye lens 110, and the second optical path control device 520 may be disposed on one side surface of the left-eye lens 120. Figure 2 As shown in , the first light path control device 510 may be disposed on an upper side surface of the right-eye lens 110 , and the second light path control device 520 may be disposed on an upper side surface of the left-eye lens 120 .

[0078] Each of the first light path control device 510 and the second light path control device 520 can selectively change the path of the incident light. For example, each of the first light path control device 510 and the second light path control device 520 can output the incident light without changing the path of the incident light. In addition, each of the first light path control device 510 and the second light path control device 520 can change the path of the incident light.

[0079] The first convex lens 310 may be disposed on the first light path control device 510, and the second convex lens 360 may be disposed on the second light path control device 520. Each of the first convex lens 310 and the second convex lens 360 may be formed as a plano-convex lens or a biconvex lens.

[0080] The first display device 210 may be disposed on the first convex lens 310, and the second display device 220 may be disposed on the second convex lens 360. Each of the first display device 210 and the second display device 220 displays a virtual image for realizing augmented reality. The first display device 210 may include a first display panel 211, a first circuit board 212, and a first driving circuit 213. The second display device 220 may include a second display panel 221, a second circuit board 222, and a second driving circuit 223.

[0081] The first display panel 211 may be disposed on the first convex lens 310. The second display panel 221 may be disposed on the second convex lens 360. Each of the first display panel 211 and the second display panel 221 may be a flexible display panel that is flexible and can be bent or flexed. For example, each of the first display panel 211 and the second display panel 221 may be an organic light emitting display panel or an organic light emitting display panel including quantum dots. In this specification, the case where each of the first display panel 211 and the second display panel 221 is an organic light emitting display panel will be mainly described.

[0082] The first circuit board 212 may be attached to one end of the first display panel 211. The second circuit board 222 may be attached to one end of the second display panel 221. The first circuit board 212 and the second circuit board 222 may be flexible printed circuit boards that may be bent or flexed.

[0083] A power supply unit for supplying power to the first display device 210 and the second display device 220 may be embedded in any one of the first temple 31 and the second temple 32. In this case, a first cable for connecting the first circuit board 212 to the power supply unit and a second cable for connecting the second circuit board 222 to the power supply unit may be additionally provided. When the power supply unit is embedded in the second temple 32, the first cable may extend to the second temple 32. The length of the first cable may be longer than that of the second cable.

[0084] Figure 3 An example of a method of providing augmented reality using an optical device according to one embodiment is shown.

[0085] Reference Figure 3 , the first display panel 211 may display the first virtual image IM1 during the first period and the second virtual image IM2 during the second period. The first period and the second period may be arranged alternately. For example, the first display panel 211 may display the first virtual image IM1 during the odd frame period and the second virtual image IM2 during the even frame period.

[0086] First, during the first period, the first virtual image IM1 displayed on the first display panel 211 is focused by the first convex lens 310 and incident on the first light path control device 510. During the first period, the first virtual image IM1 displayed on the first display panel 211 may be output by the first light path control device 510 without an optical path change.

[0087] The upper surface of the right-eye lens 110 may be inclined at a first angle θ1 relative to the thickness direction (Z-axis direction) of the right-eye lens 110. Therefore, during the first period, the first virtual image IM1 output by the first optical path control device 510 without changing the optical path may be refracted on the upper surface of the right-eye lens 110 and propagated toward the first reflective member 411. During the first period, the first virtual image IM1 may be reflected by the first reflective member 411 and emitted to the exit surface of the right-eye lens 110 where the user's right eye RE is disposed. Therefore, the first virtual image IM1 may be focused on the retina of the user's right eye RE. Therefore, during the first period, the user may view the real image and the first virtual image IM1 together without moving the focus set on the real image.

[0088] Second, during the second period, the second virtual image IM2 displayed on the first display panel 211 is focused by the first convex lens 310 and is incident on the first optical path control device 510. During the second period, the second virtual image IM2 displayed on the first display panel 211 may be output after the optical path is changed to the first direction by the first optical path control device 510. When it is assumed that the second virtual image IM2 is incident in the height direction (Y-axis direction) of the right-eye lens 110, the first direction may be inclined at a second angle θ2 relative to the height direction (Y-axis direction) of the right-eye lens 110.

[0089] The upper surface of the right eye lens 110 may be inclined at a first angle θ1 relative to the thickness direction (Z-axis direction) of the right eye lens 110. In addition, the first reflection member 411 and the second reflection member 412 may be arranged in the height direction (Y-axis direction) of the right eye lens 110 without overlapping each other. Therefore, during the second period, the second virtual image IM2 whose optical path has been changed to the first direction by the first optical path control device 510 may be refracted on the upper surface of the right eye lens 110 and propagated in the direction where the second reflection member 412 is arranged. During the second period, the second virtual image IM2 may be reflected by the second reflection member 412 and emitted to the exit surface of the right eye lens 110 where the user's right eye RE is arranged. Therefore, the second virtual image IM2 may be focused on the retina of the user's right eye RE. Therefore, during the second period, the user may watch the real image together with the second virtual image IM2 without moving the focus set on the real image.

[0090] The user may view a virtual image IM composed of a first virtual image IM1 displayed on the first display panel 211 during a first period and a second virtual image IM2 displayed on the first display panel 211 during a second period through the right eye RE. Figure 3 As shown in , when the first virtual image IM1 is the upper part of an apple and the second virtual image IM2 is the lower part of an apple, the user can view one apple image in which the upper part of the apple and the lower part of the apple are combined. That is, the user can view the virtual image IM in an area wider than the field of view (FOV) of the originally viewed virtual image. Therefore, the field of view (FOV) of the virtual image IM viewed by the user through augmented reality can be expanded without increasing the size of the optical device.

[0091] At the same time, despite Figure 3It is shown that the upper side surface of the right eye lens 110 is inclined at a first angle θ1 relative to the thickness direction (Z-axis direction) of the right eye lens 110, but the present disclosure is not limited thereto. The upper side surface of the right eye lens 110 may be parallel to the thickness direction (Z-axis direction) of the right eye lens 110, without being inclined at the first angle θ1 relative to the thickness direction (Z-axis direction) of the right eye lens 110. However, when the upper side surface of the right eye lens 110 is inclined at the first angle θ1 relative to the thickness direction (Z-axis direction) of the right eye lens 110, the field of view (FOV) of the virtual image IM may be further expanded compared to when the upper side surface of the right eye lens 110 is parallel to the thickness direction (Z-axis direction).

[0092] Similar to Figure 3 , the user may view a virtual image IM in which the first virtual image IM1 displayed on the second display panel 221 during the first period and the second virtual image IM2 displayed on the second display panel 221 during the second period are combined through the left eye.

[0093] Figure 4 It is shown Figure 1 An exploded perspective view of an example of a right-eye lens and a reflective member. Figure 5 It is shown Figure 4 A side view of an example of a right-eye lens and a reflective member.

[0094] Reference Figure 4 and Figure 5 , the right-eye lens 110 may include a first lens unit 111 , a second lens unit 112 , a reflective member substrate 400 , and reflective members 411 and 412 .

[0095] The first lens unit 111 may have a first inclined surface IS1, a first surface PS1, a second side surface SS12, and a fourth side surface SS14, and a first side surface SS11 and a third side surface SS13, wherein the first inclined surface IS1, the first surface PS1, the second side surface SS12, and the fourth side surface SS14 have a rectangular shape, and the first side surface SS11 and the third side surface SS13 have a trapezoidal shape. The first inclined surface IS1 may be a bottom surface of the first lens unit 111, and the first surface PS1 may be a top surface of the first lens unit 111. The first side surface SS11 of the first lens unit 111 may be a left side surface, the second side surface SS12 may be an upper side surface, the third side surface SS13 may be a right side surface, and the fourth side surface SS14 may be a lower side surface. The first inclined surface IS1, the first surface PS1, the first side surface SS11, the second side surface SS12, the third side surface SS13, and the fourth side surface SS14 of the first lens unit 111 may be flat surfaces.

[0096] The second lens unit 112 may have a second inclined surface IS2, a second surface PS2, a second side surface SS22, and a fourth side surface SS24, and a first side surface SS21 and a third side surface SS23, wherein the second inclined surface IS2, the second surface PS2, the second side surface SS22, and the fourth side surface SS24 have a rectangular shape, and the first side surface SS21 and the third side surface SS23 have a trapezoidal shape. The second inclined surface IS2 may be a top surface of the second lens unit 112, and the second surface PS2 may be a bottom surface of the second lens unit 112. The first side surface SS21 of the second lens unit 112 may be a left side surface, the second side surface SS22 of the second lens unit 112 may be an upper side surface, the third side surface SS23 of the second lens unit 112 may be a right side surface, and the fourth side surface SS24 of the second lens unit 112 may be a lower side surface. The second inclined surface IS2, the second surface PS2, the first side surface SS21, the second side surface SS22, the third side surface SS23, and the fourth side surface SS24 of the second lens unit 112 may be flat surfaces.

[0097] The first inclined surface IS1 of the first lens unit 111 may be disposed to face the second inclined surface IS2 of the second lens unit 112. An inclination angle θ3 of the first inclined surface IS1 relative to the first surface PS1 of the first lens unit 111 may be substantially equal to an inclination angle θ4 of the second inclined surface IS2 relative to the second surface PS2 of the second lens unit 112. The first inclined surface IS1 of the first lens unit 111 may be disposed to be parallel to the second inclined surface IS2 of the second lens unit 112.

[0098] The reflective member substrate 400 may be disposed between the first inclined surface IS1 of the first lens unit 111 and the second inclined surface IS2 of the second lens unit 112. The reflective member substrate 400 may be formed of glass or plastic in a transparent or translucent manner. For example, the reflective member substrate 400 may be formed of ultra-thin glass or a flexible film such as a polyimide film, wherein the ultra-thin glass has a thickness of 0.1 mm or less.

[0099] The reflective members 411 and 421 may be disposed on a first surface of the reflective member substrate 400. The first surface of the reflective member substrate 400 may be a surface facing the first inclined surface IS1 of the first lens unit 111. A second surface of the reflective member substrate 400 opposite to the first surface may be a surface facing the second inclined surface IS2 of the second lens unit 112.

[0100] Each of the reflective members 411 and 412 may be formed by depositing a metal having a high reflectivity, such as silver (Ag), on the first surface of the reflective member substrate 400. Each of the reflective members 411 and 412 may have a thickness of several micrometers to several tens of micrometers. The first reflective member 411 and the second reflective member 412 may be disposed in the height direction (Y-axis direction) of the right-eye lens 110 without overlapping each other.

[0101] The first adhesive layer 410 is disposed between the first inclined surface IS1 of the first lens unit 111 and the first surface of the reflective member substrate 400 to adhere the first surface of the reflective member substrate 400 to the first inclined surface IS1 of the first lens unit 111. The second adhesive layer 420 is disposed between the second inclined surface IS2 of the second lens unit 112 and the second surface of the reflective member substrate 400 to adhere the second surface of the reflective member substrate 400 to the second inclined surface IS2 of the second lens unit 112. The first adhesive layer 410 and the second adhesive layer 420 may be an optically clear resin (OCR) or an optically clear adhesive (OCA).

[0102] The refractive index of the first lens unit 111 may be substantially equal to the refractive index of the second lens unit 112. In order to minimize the influence of the first adhesive layer 410 and the second adhesive layer 420 on the refraction and reflection of the light of the first display device 210 provided to the right-eye lens 110, the refractive index of the first adhesive layer 410 may be designed to match the refractive index of the first lens unit 111 and the refractive index of the second lens unit 112. In this case, the refractive index of the first adhesive layer 410 and the refractive index of the second adhesive layer 420 may be substantially equal to the refractive index of the first lens unit 111 and the refractive index of the second lens unit 112, respectively. Optionally, the difference between the refractive index of the first adhesive layer 410 and the refractive index of the first lens unit 111, the difference between the refractive index of the first adhesive layer 410 and the refractive index of the second lens unit 112, the difference between the refractive index of the second adhesive layer 420 and the refractive index of the first lens unit 111, and the difference between the refractive index of the second adhesive layer 420 and the refractive index of the second lens unit 112 may be 0.1 or less.

[0103] according to Figure 4 and Figure 5In the embodiment shown in FIG. 1 , the reflective member substrate 400 on which the reflective members 411 and 412 are deposited is attached to the first inclined surface IS1 of the first lens unit 111 of the right-eye lens 110 using the first adhesive layer 410, and is attached to the second inclined surface IS2 of the second lens unit 112 of the right-eye lens 110 using the second adhesive layer 420. Therefore, the right-eye lens 110 including the reflective members 411 and 412 inclined at the inclination angle θ3 or θ4 in the height direction (Y-axis direction) relative to the width direction (Z-axis direction) of the right-eye lens 110 can be easily manufactured.

[0104] Since the left-eye lens 120 can be formed substantially with Figure 4 and Figure 5 The formation of the right-eye lens 110 shown in FIG. 1 is the same, and a detailed description of the left-eye lens 120 will be omitted.

[0105] Figure 6 It is shown Figure 1 A plan view of an example of a first display device.

[0106] Reference Figure 6 , the first display panel 211 of the first display device 210 may include a display area DA, a pad area PA, a scan driving circuit part SDC, and an integrated driving circuit part DDC.

[0107] The display area DA may include data lines DL, scan lines SL, and pixels PX. Figure 6 As shown in , the data lines DL may be arranged in the height direction (Y-axis direction) of the right eye lens 110, and the scan lines SL may be arranged in the width direction (X-axis direction) of the right eye lens 110. The pixels PX may be arranged in a region defined by the data lines DL and the scan lines SL. For example, the pixels PX may be arranged in a cross region of the data lines DL and the scan lines SL. Figure 7 A detailed description is given of the pixels PX of the display area DA.

[0108] The pad area PA includes a routing line RL connected to the integrated driving circuit portion DDC and a pad DP connected to the routing line RL. The pad DP may be electrically connected to the first circuit board 212. The first circuit board 212 may be attached to the pad DP using an anisotropic conductive film.

[0109] The scan driving circuit part SDC may be disposed on a first side of the display area DA. The scan driving circuit part SDC may be disposed adjacent to a long side of the display area DA. The scan driving circuit part SDC is connected to the scan lines SL of the display area DA. The scan driving circuit part SDC may receive a scan control signal from the integrated driving circuit part DDC through a scan control line SCL, generate a scan signal according to the scan control signal, and sequentially apply the scan signal to the scan lines SL.

[0110] The scan driving circuit portion SDC may include a thin film transistor as a switching element. In this case, the thin film transistor of the scan driving circuit portion SDC may be formed simultaneously with the thin film transistor of the pixel PX of the display area DA.

[0111] The integrated driving circuit portion DDC may be disposed on the second side of the display area DA. The integrated driving circuit portion DDC may be disposed adjacent to the short side of the display area DA. The integrated driving circuit portion DDC may be disposed in the pad area PA. Alternatively, the integrated driving circuit portion DDC may be disposed on the first circuit board 212. The integrated driving circuit portion DDC may be formed as an integrated circuit.

[0112] The integrated driving circuit portion DDC receives the timing signal and the video data through the routing line RL. The integrated driving circuit portion DDC may generate a scan control signal according to the timing signal and output the scan control signal to the scan driving circuit portion SDC. The integrated driving circuit portion DDC may generate a data control signal according to the timing signal. The integrated driving circuit portion DDC may generate a data voltage during a period of applying the scan signal according to the data control signal and the video data and apply the data voltage to the data line DL.

[0113] Figure 7 It is shown Figure 6 A cross-sectional view of a portion of a first display area.

[0114] Reference Figure 7 , the display area DA of the first display device 210 may include a substrate 1100 , a thin film transistor layer 1230 , a light emitting element layer 1240 , and a thin film encapsulation layer 1300 .

[0115] The thin film transistor layer 1230 is formed on the substrate 1100. The thin film transistor layer 1230 includes a thin film transistor 1235, a gate insulating film 1236, an interlayer insulating film 1237, a protective film 1238, and a planarization film 1239.

[0116] A buffer film may be formed on the substrate 1100. The buffer film may be formed on the substrate 1100 to protect the thin film transistor 1235 and the light emitting element from moisture penetration through the substrate 1100 which is susceptible to moisture penetration. The buffer film may include a plurality of inorganic films stacked alternately. For example, the buffer film may be made of silicon oxide (SiO x ) layer, silicon nitride (SiN x The buffer film may be omitted.

[0117] The thin film transistors 1235 are formed on the buffer film. Each of the thin film transistors 1235 includes an active layer 1231, a gate electrode 1232, a source electrode 1233, and a drain electrode 1234. Figure 7 It is exemplarily shown that each of the thin film transistors 1235 is configured as a top gate type in which the gate electrode 1232 is located on the top of the active layer 1231, but it should be noted that the present disclosure is not limited thereto. That is, each of the thin film transistors 1235 may be configured as a bottom gate type in which the gate electrode 1232 is located below the active layer 1231, or a dual gate type in which the gate electrode 1232 is located on the active layer 1231 and below the active layer 1231.

[0118] The active layer 1231 is formed on the buffer film. The active layer 1231 may be formed of a silicon-based semiconductor material or an oxide-based semiconductor material. A light shielding layer for shielding external light incident on the active layer 1231 may be formed between the buffer film and the active layer 1231 .

[0119] The gate insulating film 1236 may be formed on the active layer 1231. The gate insulating film 1236 may be made of a material such as silicon oxide (SiO x ) layer and silicon nitride (SiN x ) layer or multiple inorganic layers thereof.

[0120] The gate electrode 1232 and the gate line may be formed on the gate insulating film 1236. The gate electrode 1232 and the gate line may be formed as a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0121] The interlayer insulating film 1237 may be formed on the gate electrode 1232 and the gate line. The interlayer insulating film 1237 may be made of, for example, silicon oxide (SiO x ) layer and silicon nitride (SiN x ) layer or multiple inorganic layers thereof.

[0122] The source electrode 1233, the drain electrode 1234, and the data line DL may be formed on the interlayer insulating film 1237. Each of the source electrode 1233 and the drain electrode 1234 may be connected to the active layer 1231 via a contact hole passing through the gate insulating film 1236 and the interlayer insulating film 1237. The source electrode 1233, the drain electrode 1234, and the data line DL may be formed as a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0123] A protective film 1238 for insulating the thin film transistor 1235 may be formed on the source electrode 1233, the drain electrode 1234, and the data line DL. The protective film 1238 may be made of a material such as silicon oxide (SiO x ) layer and silicon nitride (SiN x ) layer or multiple inorganic layers thereof.

[0124] The planarization film 1239 may be formed on the protection film 1238 to planarize a step caused by the thin film transistor 1235. The planarization film 1239 may be formed of an organic film such as acrylic resin, epoxy resin, phenol resin, polyamide resin, polyimide resin, or the like.

[0125] The light emitting element layer 1240 is formed on the thin film transistor layer 1230. The light emitting element layer 1240 includes a light emitting element and a pixel defining layer 1244.

[0126] The light emitting element and the pixel defining layer 1244 are formed on the planarization film 1239. The light emitting element may be an organic light emitting element. In this case, the light emitting element may include an anode electrode 1241, a light emitting layer 1242, and a cathode electrode 1243.

[0127] The anode electrode 1241 may be formed on the planarization film 1239. The anode electrode 1241 may be connected to the drain electrode 1234 of the thin film transistor 1235 via a contact hole passing through the protection film 1238 and the planarization film 1239.

[0128] The pixel defining layer 1244 may be formed to cover the edge of the anode electrode 1241 on the planarization film 1239 to separate the pixels PX. That is, the pixel defining layer 1244 serves as a pixel defining layer for defining the pixels PX. Each of the pixels PX represents a region where the anode electrode 1241, the light emitting layer 1242, and the cathode electrode 1243 are sequentially stacked and holes from the anode electrode 1241 and electrons from the cathode electrode 1243 are recombined with each other in the light emitting layer 1242 to emit light.

[0129] The light-emitting layer 1242 is formed on the anode electrode 1241 and the pixel defining layer 1244. The light-emitting layer 1242 may be an organic light-emitting layer. The light-emitting layer 1242 may emit one of red light, green light, and blue light. The peak wavelength range of the red light may be about 620nm to 750nm, and the peak wavelength range of the green light may be about 495nm to 570nm. In addition, the peak wavelength range of the blue light may be about 450nm to 495nm. Alternatively, the light-emitting layer 1242 may be a white light-emitting layer that emits white light. In this case, the light-emitting layer 1242 may have a structure in which a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer are stacked, and may be a common layer formed together for the pixel PX. In this case, the display device 210 may also include a separate color filter for displaying red, green, or blue.

[0130] The light emitting layer 1242 may include a hole transport layer, an emission layer, and an electron transport layer. In addition, the light emitting layer 1242 may be formed in a series structure of two or more stacks, in which case a charge generation layer may be formed between the stacks.

[0131] The cathode electrode 1243 is formed on the light emitting layer 1242. The cathode electrode 1243 may be formed to cover the light emitting layer 1242. The cathode electrode 1243 may be a common layer commonly formed for the pixels PX.

[0132] In the case where the light emitting element layer 1240 is formed by a top emission method that emits light upward, the anode electrode 1241 may be formed of a metal material having a high reflectivity, for example, the anode electrode 1241 may have a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and ITO (ITO / Al / ITO), an APC alloy, and a stacked structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd) and copper (Cu). In addition, the cathode electrode 1243 may be formed of a transparent conductive material (TCO) such as ITO or IZO or a semi-transmissive conductive material such as an alloy of magnesium (Mg), silver (Ag) or magnesium (Mg) and silver (Ag). In the case where the cathode electrode 1243 is formed of a semi-transmissive conductive material, the luminous efficiency may be improved due to the microcavity effect.

[0133] In the case where the light emitting element layer 1240 is formed by a bottom emission method that emits light downward, the anode electrode 1241 may be formed of a transparent conductive material (TCO) such as ITO or IZO or a semi-transmissive conductive material such as magnesium (Mg), silver (Ag), or an alloy of magnesium (Mg) and silver (Ag). The cathode electrode 1243 may be formed of a metal material having a high reflectivity, such as a stacked structure (Ti / Al / Ti) of aluminum (Al) and titanium (Ti), a stacked structure (ITO / Al / ITO) of Al and ITO, an APC alloy, a stacked structure (ITO / APC / ITO) of an APC alloy and ITO, etc. In the case where the anode electrode 1241 is formed of a semi-transmissive conductive material, the emission efficiency of the light emitting element layer 1240 may be improved due to the microcavity effect.

[0134] The thin film encapsulation layer 1300 is formed on the light emitting element layer 1240. The thin film encapsulation layer 1300 prevents oxygen or moisture from penetrating the light emitting layer 1242 and the cathode electrode 1243. To this end, the thin film encapsulation layer 1300 may include at least one inorganic layer. The inorganic layer may be formed of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, or titanium oxide. In addition, the thin film encapsulation layer 1300 may also include at least one organic layer. The organic layer may be formed to have a thickness sufficient to prevent particles from penetrating the thin film encapsulation layer 1300 and being injected into the light emitting layer 1242 and the cathode electrode 1243. The organic layer may include any one of epoxy resin, acrylate, and polyurethane acrylate. Instead of the thin film encapsulation layer 1300, an encapsulation substrate may be provided on the light emitting element layer 1240.

[0135] Figure 8 and Fig. 9 Shows Figure 1 An example of a first optical path control device.

[0136] Reference Figure 8 and Fig. 9 The first optical path control device 510 may include a first sub-optical path control device 1510 having a first substrate 511, a second substrate 512, a first electrode 513, a second electrode 514, a first alignment layer 515, a first liquid crystal layer 517, a first single refractive index layer 518 and a polarizing film 516.

[0137] The first substrate 511 and the second substrate 512 may be formed of glass or plastic in a transparent manner. For example, the first substrate 511 and the second substrate 512 may be formed of ultra-thin glass having a thickness of 0.1 mm or less, or a flexible film such as a polyethylene terephthalate (PET) film or a polyimide film.

[0138] The first electrode 513 may be formed on one surface of the first substrate 511 facing the second substrate 512, and the second electrode 514 may be formed on one surface of the second substrate 512 facing the first substrate 511. A first driving voltage may be applied to the first electrode 513, and a second driving voltage may be applied to the second electrode 514. The first driving voltage and the second driving voltage may be applied as alternating current (AC) voltages. The first electrode 513 and the second electrode 514 may be formed of a transparent metal material such as indium tin oxide (ITO) or indium zinc oxide (IZO).

[0139] The first liquid crystal layer 517 may be disposed between the first electrode 513 and the second electrode 514 and may include liquid crystals 517a. When a first driving voltage is applied to the first electrode 513 and a second driving voltage is applied to the second electrode 514, a vertical electric field may be applied to the liquid crystals 517a of the first liquid crystal layer 517. When the vertical electric field is not formed, the liquid crystals 517a of the first liquid crystal layer 517 may be arranged in a horizontal direction (Z-axis direction or X-axis direction) by the first alignment layer 515.

[0140] Despite Figure 8 and Fig. 9 , only the first alignment layer 515 disposed below the first liquid crystal layer 517 is shown, but an additional alignment layer may be disposed above the first liquid crystal layer 517. In this case, an additional alignment layer may be disposed between the first liquid crystal layer 517 and the first single refractive index layer 518.

[0141] The first single refractive index layer 518 may be formed of glass or plastic such as polyethylene terephthalate (PET) film in a transparent manner. The refractive index of the first single refractive index layer 518 may be substantially equal to the ordinary refractive index n of the liquid crystal 517a of the first liquid crystal layer 517. o .

[0142] like Figure 8 As shown in , the boundary between the first liquid crystal layer 517 and the first single refractive index layer 518 may be formed in the form of a prism mountain. That is, the boundary between the first liquid crystal layer 517 and the first single refractive index layer 518 may have a triangular shape. Figure 8 and Fig. 9 The boundary between the first liquid crystal layer 517 and the first single refractive index layer 518 is shown to have a right triangle shape, but the disclosure is not limited thereto. The boundary between the first liquid crystal layer 517 and the first single refractive index layer 518 may be inclined at a fifth angle θ5 relative to the horizontal direction (Z-axis direction).

[0143] The polarizing film 516 may be disposed on the second substrate 512. The polarizing film 516 may include a phase retardation film such as a quarter wave (λ / 4) plate and a linear polarizing plate. In this case, the linear polarizing plate may be disposed on the second substrate 512, and the phase retardation film may be disposed on the linear polarizing plate. Accordingly, the polarizing film 516 allows the light L of the first display panel 211 vibrating in the horizontal direction to be The light from the second substrate 512 is transmitted to the second substrate 512. In addition, the light from the second substrate 512 is prevented from passing through the polarizing film 516, being reflected by the first display panel 211, and being output through the polarizing film 516.

[0144] although Figure 8 and Fig. 9It is shown that the polarizing film 516 is disposed on the second substrate 512 , but the present disclosure is not limited thereto. The polarizing film 516 may be disposed between the first convex lens 310 and the first display panel 211 .

[0145] like Fig. 9 As shown in FIG. 1 , when the liquid crystals 517a of the first liquid crystal layer 517 are arranged in the vertical direction (Y-axis direction) and the light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) When incident, the liquid crystal 517a of the first liquid crystal layer 517 may have an ordinary refractive index n o In this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be substantially the same. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 It can be output without being refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517 .

[0146] like Figure 8 As shown in FIG. 5 , when the liquid crystals 517a of the first liquid crystal layer 517 are arranged in the horizontal direction (Z-axis direction), and the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 When incident, the liquid crystal 517a of the first liquid crystal layer 517 may have an extraordinary refractive index n e In this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be different. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The light L incident on the first light path control device 510 of the first display panel 211 may be refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517. For example, the path of the light L propagating in the vertical direction (Y-axis direction) of the first display panel 211 may be changed. The light may be refracted at a second angle θ2 with respect to the vertical direction (Y-axis direction).

[0147] according to Figure 8 and Fig. 9 In the embodiment shown in FIG. 5 , light incident on the first light path control device 510 can be directly output or refracted by controlling the liquid crystal 517 a of the first liquid crystal layer 517. That is, the path of light output from the first display panel 211 can be selectively changed by the first light path control device 510.

[0148] Meanwhile, since the second light path control device 520 may be substantially the same as the first light path control device 510 , a description of the second light path control device 520 will be omitted.

[0149] Fig.10 is an exploded perspective view showing an optical device according to one embodiment. Fig.11 An example of a method of providing augmented reality using an optical device according to one embodiment is shown.

[0150] Fig.10 and Fig.11 The embodiment shown in Figure 2 and Figure 3 The difference between the embodiment shown in is that the optical device 1 further includes a third convex lens 330, a fourth convex lens 380, a first optical path adjustment unit 320 and a second optical path adjustment unit 370. Fig.10 and Fig.11 In this paper, the main description and Figure 2 and Figure 3 The differences between the embodiments shown in FIG.

[0151] Reference Fig.10 and Fig.11 , the first optical path adjusting unit 320 may be disposed on the first convex lens 310, and the second optical path adjusting unit 370 may be disposed on the second convex lens 360. Each of the first optical path adjusting unit 320 and the second optical path adjusting unit 370 may be a polyhedron having a polygonal top surface and a polygonal bottom surface. Fig.10 It is illustrated that each of the first light path adjusting unit 320 and the second light path adjusting unit 370 is a pentaprism having a shape of a heptahedron having top and bottom surfaces of a pentagon, but the present disclosure is not limited thereto.

[0152] The third convex lens 330 may be disposed on one side surface of the first optical path adjusting unit 320, and the fourth convex lens 380 may be disposed on one side surface of the second optical path adjusting unit 370. Fig.10 As shown in , the third convex lens 330 may be disposed on one side surface of the first optical path adjusting unit 320 in the thickness direction (Z-axis direction) of the right-eye lens 110. The fourth convex lens 380 may be disposed on one side surface of the second optical path adjusting unit 370 in the thickness direction (Z-axis direction) of the left-eye lens 120. On the contrary, the first convex lens 310 may be disposed on the other side surface of the first optical path adjusting unit 320 in the height direction (Y-axis direction) of the right-eye lens 110. The second convex lens 360 may be disposed on the other side surface of the second optical path adjusting unit 370 in the height direction (Y-axis direction) of the left-eye lens 120. Each of the third convex lens 330 and the fourth convex lens 380 may be formed as a plano-convex lens or a biconvex lens.

[0153] like Fig.11As shown in , when the first optical path adjusting unit 320 is formed as a pentaprism, the first optical path adjusting unit 320 may have first to fifth side surfaces S1 to S5. The first convex lens 310 may be disposed on the first side surface S1 of the first optical path adjusting unit 320, and the third convex lens 330 may be disposed on the second side surface S2 of the first optical path adjusting unit 320. The angle between the first side surface S1 and the second side surface S2 of the first optical path adjusting unit 320 may be a right angle. The third side surface S3 of the first optical path adjusting unit 320 may be a side surface that shares one side with the first side surface S1, the fourth side surface S4 of the first optical path adjusting unit 320 may be a side surface that shares one side with the third side surface S3, and the fifth side surface S5 of the first optical path adjusting unit 320 may be a side surface that shares one side with the second side surface S2.

[0154] The first virtual image IM1 or the second virtual image IM2 displayed on the first display panel 211 is focused by the third convex lens 330 and is incident on the first optical path adjusting unit 320. The first virtual image IM1 or the second virtual image IM2 displayed on the first display panel 211 may be reflected by at least two of the side surfaces of the first optical path adjusting unit 320. Due to the first optical path adjusting unit 320, the optical path of the first virtual image IM1 or the second virtual image IM2 displayed on the first display panel 211 may be increased. For example, Fig.11 As shown in , the first virtual image IM1 or the second virtual image IM2 displayed on the first display panel 211 may be incident on the second side surface S2 of the first optical path adjusting unit 320, reflected by the third side surface S3 of the first optical path adjusting unit 320, reflected by the fifth side surface S5 of the first optical path adjusting unit 320, and emitted to the first side surface S1 of the first optical path adjusting unit 320. Then, the first virtual image IM1 or the second virtual image IM2 displayed on the first display panel 211 may be focused by the first convex lens 310 and incident on one side surface (e.g., the upper side surface) of the right-eye lens 110.

[0155] Fig.12 is an exploded perspective view showing an optical device according to one embodiment. Fig.13 and Fig.14 An example of a method of providing augmented reality using an optical device according to one embodiment is shown. Fig.13 shows a first virtual image IM1 viewed by a user during a first period, and Fig.14 A second virtual image IM2 viewed by the user during a second period of time is shown.

[0156] Figure 12 to Figure 14 The embodiment shown in Figure 2 and Figure 3The embodiment shown in FIG. 4 is different in that the depth D1 of the first virtual image IM1 is different from the depth D2 of the second virtual image IM2 .

[0157] Reference Figure 12 to Figure 14 , the first display panel 211 may display the first virtual image IM1 during the first period, and display the second virtual image IM2 during the second period. The first period and the second period may be arranged alternately. For example, the first display panel 211 may display the first virtual image IM1 during the odd frame period and display the second virtual image IM2 during the even frame period. The first virtual image IM1 and the second virtual image IM2 may be different from each other or may be the same.

[0158] First, during the first period, the first virtual image IM1 displayed on the first display panel 211 is focused by the first convex lens 310 and incident on the first light path control device 510. During the first period, the first virtual image IM1 displayed on the first display panel 211 may be output through the first light path control device 510 without a light path change.

[0159] During the first period, the first virtual image IM1 outputted by the first optical path control device 510 without optical path change may be incident on the upper surface of the right-eye lens 110 and propagate to the first reflective member 411. During the first period, the first virtual image IM1 may be reflected by the first reflective member 411 and emitted to the exit surface of the right-eye lens 110 where the user's right eye RE is disposed. Accordingly, the first virtual image IM1 may be focused on the retina of the user's right eye RE. Therefore, during the first period, the user may view the first virtual image IM1 together with the real image without moving the focus set on the real image.

[0160] Second, during the second period, the second virtual image IM2 displayed on the first display panel 211 is focused by the first convex lens 310 and is incident on the first optical path control device 510. During the second period, the second virtual image IM2 displayed on the first display panel 211 may be output after the optical path is changed to the first direction by the first optical path control device 510. When it is assumed that the second virtual image IM2 is incident in the height direction (Y-axis direction) of the right-eye lens 110, the first direction may be inclined at a seventh angle θ7 relative to the height direction (Y-axis direction) of the right-eye lens 110.

[0161] During the second period, the second virtual image IM2, whose optical path has been changed to the first direction by the first optical path control device 510, may be incident on the upper surface of the right eye lens 110 and propagate to the exit surface of the right eye lens 110. The second virtual image IM2 may be totally reflected by the exit surface of the right eye lens 110 and propagate to the lower surface of the right eye lens 110. The second virtual image IM2 may be reflected by the first reflective sheet 610 disposed on the lower surface of the right eye lens 110 and propagate to the second reflective member 412. During the second period, the second virtual image IM2 may be reflected by the second reflective member 412 and emitted to the exit surface of the right eye lens 110 where the user's right eye RE is disposed. Accordingly, the second virtual image IM2 may be focused on the retina of the user's right eye RE. Therefore, during the second period, the user may view the second virtual image IM2 together with the real image without moving the focus set on the real image.

[0162] The optical path from the first display panel 211 from which the second virtual image IM2 is emitted to the retina of the right eye RE of the user to which the second virtual image IM2 is provided may be longer than the optical path from the first display panel 211 from which the first virtual image IM1 is emitted to the retina of the right eye RE of the user to which the first virtual image IM1 is provided. Accordingly, the depth D2 of the second virtual image IM2 viewed by the user may be greater than the depth D1 of the first virtual image IM1. That is, the user may view multiple virtual images IM1 and IM2 having different depths. For example, Fig.13 and Fig.14 As shown in , when both the first virtual image IM1 and the second virtual image IM2 are apples, the user can view an apple image viewed at a first depth D1 (first virtual image IM1) and an apple image viewed at a second depth D2 (second virtual image IM2).

[0163] At the same time, in order to increase the optical path between the first display panel 211 and the user's right eye RE, as shown in FIG. Fig.10 and Fig.11 As shown in , the first light path adjusting unit 320 and the third convex lens 330 may be additionally disposed between the first display panel 211 and the first convex lens 310 .

[0164] and Figure 12 to Figure 14 Similarly, the user may view a plurality of virtual images IM1 and IM2 having different depths through the left eye.

[0165] Fig.15 and Fig.16 An example of a method of providing augmented reality using an optical device according to one embodiment is shown. Fig.15 shows the optical path of a first virtual image IM1 viewed by a user during a first period, and Fig.16The optical path of the second virtual image IM2 viewed by the user during the second period is shown.

[0166] Fig.15 and Fig.16 The embodiment shown in Fig.13 and Fig.14 The difference between the embodiments shown in FIG. 1 and FIG. 2 is that the second virtual image IM2 is reflected by the second reflective plate 620 disposed on the right side surface of the right eye lens 110 or the third reflective plate 630 disposed on the left side surface of the right eye lens 110 during the second time period, instead of being totally reflected by the exit surface of the right eye lens 110.

[0167] Reference Fig.12 , Fig.15 and Fig.16 During the second period, the second virtual image IM2 whose optical path has been changed to the first direction by the first optical path control device 510 may be incident on the upper side surface of the right-eye lens 110 and propagate to the right side surface or the left side surface of the right-eye lens 110. When it is assumed that the second virtual image IM2 is incident in the height direction (Y-axis direction) of the right-eye lens 110, the first direction may be inclined at a seventh angle θ7′ relative to the height direction (Y-axis direction) of the right-eye lens 110.

[0168] The second virtual image IM2 may be reflected by the second reflective sheet 620 disposed on the right side surface of the right eye lens 110 or the third reflective sheet 630 disposed on the left side surface of the right eye lens 110, and propagate to the lower side surface of the right eye lens 110. The second virtual image IM2 may be reflected by the first reflective sheet 610 disposed on the lower side surface of the right eye lens 110 and propagate to the second reflective member 412. During the second period, the second virtual image IM2 may be reflected by the second reflective member 412 and emitted to the exit surface of the right eye lens 110 where the user's right eye RE is disposed. Accordingly, the second virtual image IM2 may be focused on the retina of the user's right eye RE. Therefore, during the second period, the user may view the second virtual image IM2 together with the real image without moving the focus set on the real image.

[0169] The optical path from the first display panel 211 from which the second virtual image IM2 is emitted to the retina of the right eye RE of the user to which the second virtual image IM2 is provided may be longer than the optical path from the first display panel 211 from which the first virtual image IM1 is emitted to the retina of the right eye RE of the user to which the first virtual image IM1 is provided. Therefore, the depth D2 of the second virtual image IM2 viewed by the user may be greater than the depth D1 of the first virtual image IM1. That is, the user may view a plurality of virtual images IM1 and IM2 having different depths.

[0170] At the same time, in order to increase the optical path between the first display panel 211 and the user's right eye RE, as shown in FIG. Fig.10 and Fig.11 As shown in , the first light path adjusting unit 320 and the third convex lens 330 may be additionally disposed between the first display panel 211 and the first convex lens 310 .

[0171] and Fig.15 and Fig.16 Similarly, the user may view a plurality of virtual images IM1 and IM2 having different depths through the left eye.

[0172] Fig.17 is an exploded perspective view showing an optical device according to one embodiment. Figures 18 to 21 An example of a method of providing augmented reality using an optical device according to one embodiment is shown.

[0173] Figures 17 to 21 The embodiment shown in Figures 12 to 15 The embodiment shown in FIG. 2 is different in that, in addition to the first virtual image IM1 and the second virtual image IM2 of the first display panel 211 , the user can also view the third virtual image IM3 and the fourth virtual image IM4 .

[0174] Reference Figures 17 to 21 , the first display panel 211 may display the first virtual image IM1 during the first period, the second virtual image IM2 during the second period, the third virtual image IM3 during the third period, and the fourth virtual image IM4 during the fourth period. The first period, the second period, the third period, and the fourth period may be repeatedly arranged. The first virtual image IM1, the second virtual image IM2, the third virtual image IM3, and the fourth virtual image IM4 may be different from each other or may be the same.

[0175] The optical path of the first virtual image IM1 of the first display panel 211 during the first period and the optical path of the second virtual image IM2 of the first display panel 211 during the second period may be substantially the same as the combination Figures 12 to 15 Therefore, descriptions of the optical path of the first virtual image IM1 of the first display panel 211 during the first period and the optical path of the second virtual image IM2 of the first display panel 211 during the second period will be omitted.

[0176] During the third period, the third virtual image IM3 displayed on the first display panel 211 is focused by the first convex lens 310 and is incident on the first optical path control device 510. During the third period, the third virtual image IM3 displayed on the first display panel 211 may be output after the optical path is changed to the second direction by the first optical path control device 510. When it is assumed that the second virtual image IM2 is incident in the height direction (Y-axis direction) of the right-eye lens 110, the second direction may be inclined at an eighth angle θ8 relative to the height direction (Y-axis direction) of the right-eye lens 110. The eighth angle θ8 may be greater than the seventh angle θ7.

[0177] During the third period, the third virtual image IM3, whose optical path has been changed to the second direction by the first optical path control device 510, may be incident on the upper surface of the right-eye lens 110 and propagate to the exit surface of the right-eye lens 110. The third virtual image IM3 may be totally reflected by the exit surface of the right-eye lens 110 and propagate to the lower surface of the right-eye lens 110. The third virtual image IM3 may be reflected by the first reflection sheet 610 disposed on the lower surface of the right-eye lens 110 and propagate to the surface of the right-eye lens 110 opposite to the exit surface. The third virtual image IM3 may be totally reflected by the surface of the right-eye lens 110 opposite to the exit surface and propagate to the third reflection member 413. During the third period, the third virtual image IM3 may be reflected by the third reflection member 413 and emitted to the exit surface of the right-eye lens 110 where the user's right eye RE is disposed. Accordingly, the third virtual image IM3 may be focused on the retina of the user's right eye RE. Therefore, during the third period, the user may view the third virtual image IM3 together with the real image without moving the focus set on the real image.

[0178] During the fourth period, the fourth virtual image IM4 displayed on the first display panel 211 is focused by the first convex lens 310 and is incident on the first optical path control device 510. During the fourth period, the fourth virtual image IM4 displayed on the first display panel 211 may be output after the optical path is changed to the third direction by the first optical path control device 510. When it is assumed that the fourth virtual image IM4 is incident in the height direction (Y-axis direction) of the right-eye lens 110, the third direction may be inclined at a ninth angle θ9 relative to the height direction (Y-axis direction) of the right-eye lens 110. The ninth angle θ9 may be greater than the eighth angle θ8.

[0179] During the fourth period, the fourth virtual image IM4, whose optical path has been changed to the third direction by the first optical path control device 510, may be incident on the upper surface of the right-eye lens 110 and propagate to the exit surface of the right-eye lens 110. The fourth virtual image IM4 may be totally reflected by the exit surface of the right-eye lens 110 and propagate to the fourth reflective member 414. During the fourth period, the fourth virtual image IM4 may be reflected by the fourth reflective member 414 and emitted to the exit surface of the right-eye lens 110 where the user's right eye RE is disposed. Accordingly, the fourth virtual image IM4 may be focused on the retina of the user's right eye RE. Therefore, during the fourth period, the user may view the fourth virtual image IM4 together with the real image without moving the focus set on the real image.

[0180] An optical path from the first display panel 211 from which the second virtual image IM2 is emitted to the retina of the right eye RE of the user to which the second virtual image IM2 is provided may be longer than an optical path from the first display panel 211 from which the first virtual image IM1 is emitted to the retina of the right eye RE of the user to which the first virtual image IM1 is provided. In addition, an optical path from the first display panel 211 from which the third virtual image IM3 is emitted to the retina of the right eye RE of the user to which the third virtual image IM3 is provided may be longer than an optical path from the first display panel 211 from which the second virtual image IM2 is emitted to the retina of the right eye RE of the user to which the second virtual image IM2 is provided. In addition, an optical path from the first display panel 211 from which the fourth virtual image IM4 is emitted to the retina of the right eye RE of the user to which the fourth virtual image IM4 is provided may be shorter than an optical path from the first display panel 211 from which the second virtual image IM2 is emitted to the retina of the right eye RE of the user to which the second virtual image IM2 is provided. In addition, the optical path from the first display panel 211 from which the fourth virtual image IM4 is emitted to the retina of the user's right eye RE to which the fourth virtual image IM4 is provided may be longer than the optical path from the first display panel 211 from which the first virtual image IM1 is emitted to the retina of the user's right eye RE to which the first virtual image IM1 is provided.

[0181] Accordingly, the depth of the third virtual image IM3 viewed by the user may be the largest, the depth of the second virtual image IM2 may be the second largest, the depth of the fourth virtual image IM4 may be the third largest, and the depth of the first virtual image IM1 may be the smallest. That is, the user may view multiple virtual images IM1 to IM4 having different depths.

[0182] At the same time, in order to increase the optical path between the first display panel 211 and the user's right eye RE, as shown in FIG. Fig.10 and Fig.11As shown in , the first light path adjusting unit 320 and the third convex lens 330 may be additionally disposed between the first display panel 211 and the first convex lens 310 .

[0183] and Figures 18 to 21 Similarly, the user may view a plurality of virtual images IM1 to IM4 having different depths through the left eye.

[0184] At the same time, despite Figures 17 to 21 Only one first reflection member 411, one second reflection member 412, one third reflection member 413, and one fourth reflection member 414 are shown, but the present disclosure is not limited thereto. The first virtual image IM1 may be reflected by the plurality of first reflection members 411 and emitted to the exit surface of the right-eye lens 110. The second virtual image IM2 may be reflected by the plurality of second reflection members 412 and emitted to the exit surface of the right-eye lens 110. The third virtual image IM3 may be reflected by the plurality of third reflection members 413 and emitted to the exit surface of the right-eye lens 110. The fourth virtual image IM4 may be reflected by the plurality of fourth reflection members 414 and emitted to the exit surface of the right-eye lens 110.

[0185] Figure 22 to Figure 25 Shows Fig.17 An example of a first optical path control device.

[0186] Figure 22 to Figure 25 The embodiment shown in Figure 8 and Fig. 9 The difference between the embodiment shown in is that the first light path control device 510 also includes a second sub-light path control device 1520. Figure 22 to Figure 25 In this paper, the main description and Figure 8 and Fig. 9 The differences between the embodiments shown in FIG.

[0187] Reference Figure 22 to Figure 25 , the second sub-light path control device 1520 may include a third substrate 521, a fourth substrate 522, a third electrode 523, a fourth electrode 524, a second alignment layer 525, a second liquid crystal layer 527, and a second single refractive index layer 528. The third substrate 521, the fourth substrate 522, the third electrode 523, the fourth electrode 524, the second alignment layer 525, the second liquid crystal layer 527, and the second single refractive index layer 528 of the second sub-light path control device 1520 are similar to Figure 8 and Fig. 9 The first substrate 511, the second substrate 512, the first electrode 513, the second electrode 514, the first alignment layer 515, the first liquid crystal layer 517 and the first single refractive index layer 518 of the first sub-light path control device 1510 shown in FIG. Figure 22 to Figure 25 The second sub-optical path control device 1520 shown in Figures 8 to 9 The difference between the first sub-optical path control device 1510 shown in .

[0188] like Figure 22 to Figure 25 As shown in , the boundary between the second liquid crystal layer 527 and the second single refractive index layer 528 may be formed in the form of a prism. The boundary between the second liquid crystal layer 527 and the second single refractive index layer 528 may be inclined at a sixth angle θ6 relative to the horizontal direction (Z-axis direction). The sixth angle θ6 may be greater than the fifth angle θ5. Accordingly, the light L of the first display panel 211 The angle of refraction at the boundary between the second liquid crystal layer 527 and the second single refractive index layer 528 may be greater than the angle of the light L from the first display panel 211. Angle of refraction at the boundary between the first liquid crystal layer 517 and the first single refractive index layer 518. In addition, the pitch of the prism mountain formed by the boundary between the second liquid crystal layer 527 and the second single refractive index layer 528 may be smaller than the pitch of the prism mountain formed by the boundary between the first liquid crystal layer 517 and the first single refractive index layer 518.

[0189] like Fig. 22 As shown in FIG. 5 , when the liquid crystals 517a of the first liquid crystal layer 517 are arranged in the vertical direction (Y-axis direction), the liquid crystals 527a of the second liquid crystal layer 527 are arranged in the vertical direction (Y-axis direction), and the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The liquid crystals 517a of the first liquid crystal layer 517 and the liquid crystals 527a of the second liquid crystal layer 527 may have an ordinary refractive index n o In this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be substantially the same. The refractive index of the second single refractive index layer 528 and the refractive index of the liquid crystal 527a of the second liquid crystal layer 527 may be substantially the same. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be output without being refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517. It can be output without being refracted at the boundary between the second single refractive index layer 528 and the second liquid crystal layer 527 .

[0190] like Fig.23 As shown in FIG. 5 , when the liquid crystals 517a of the first liquid crystal layer 517 are arranged in the horizontal direction (Z-axis direction), the liquid crystals 527a of the second liquid crystal layer 527 are arranged in the vertical direction (Y-axis direction), and the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The liquid crystal 517a of the first liquid crystal layer 517 may have an extraordinary refractive index n e , and the liquid crystal 527a of the second liquid crystal layer 527 may have an ordinary refractive index n o In this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be different. The refractive index of the second single refractive index layer 528 and the refractive index of the liquid crystal 527a of the second liquid crystal layer 527 may be substantially the same. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517. The light L incident on the first light path control device 510 of the first display panel 211 may be output without being refracted at the boundary between the second single refractive index layer 528 and the second liquid crystal layer 527. For example, the light L incident on the first display panel 211 in the vertical direction (Y-axis direction) The light emitting diode may be refracted at a seventh angle θ7 with respect to the vertical direction (Y-axis direction).

[0191] like Fig.24 As shown in FIG. 5 , when the liquid crystals 517a of the first liquid crystal layer 517 are arranged in the vertical direction (Y-axis direction), the liquid crystals 527a of the second liquid crystal layer 527 are arranged in the horizontal direction (Z-axis direction), and the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The liquid crystal 517a of the first liquid crystal layer 517 may have an ordinary refractive index n o , and the liquid crystal 527a of the second liquid crystal layer 527 may have an extraordinary refractive index n e In this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be substantially the same. The refractive index of the second single refractive index layer 528 and the refractive index of the liquid crystal 527a of the second liquid crystal layer 527 may be different from each other. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be output without being refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517. The light L incident on the first light path control device 510 of the first display panel 211 may be refracted at the boundary between the second single refractive index layer 528 and the second liquid crystal layer 527. In other words, the light L incident on the first light path control device 510 of the first display panel 211 may be changed. For example, the light L incident on the first display panel 211 in the vertical direction (Y-axis direction) The light emitting diode may be refracted at an eighth angle θ8 with respect to the vertical direction (Y-axis direction).

[0192] like Fig.25 As shown in FIG. 5 , when the liquid crystals 517a of the first liquid crystal layer 517 are arranged in the horizontal direction (Z-axis direction), the liquid crystals 527a of the second liquid crystal layer 527 are arranged in the horizontal direction (Z-axis direction), and the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The liquid crystal 517a of the first liquid crystal layer 517 may have an extraordinary refractive index n e , and the liquid crystal 527a of the second liquid crystal layer 527 may have an extraordinary refractive index n e In this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be different. The refractive index of the second single refractive index layer 528 and the refractive index of the liquid crystal 527a of the second liquid crystal layer 527 may be different from each other. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517. The light L incident on the first light path control device 510 of the first display panel 211 may be refracted at the boundary between the second single refractive index layer 528 and the second liquid crystal layer 527. In other words, the light L incident on the first light path control device 510 of the first display panel 211 may be changed. For example, the light L incident on the first display panel 211 in the vertical direction (Y-axis direction) The light emitting diode may be refracted at a ninth angle θ9 with respect to the vertical direction (Y-axis direction).

[0193] according to Figure 22 to Figure 25 In the embodiment shown in , by controlling the liquid crystals 517a of the first liquid crystal layer 517 and the liquid crystals 527a of the second liquid crystal layer 527, the light incident on the first light path control device 510 can be output after being selectively changed into any one of four directions. That is, the path of the light output from the first display panel 211 can be selectively changed by the first light path control device 510.

[0194] Fig.26 is an exploded perspective view showing an optical device according to one embodiment. Fig. 27 It is shown Fig.26 A stereogram of an example of a lens.

[0195] Reference Fig.26 and Fig. 27According to an embodiment, an augmented reality providing device 10 includes a lens 100, a first display device 210, a second display device 220, a first light path control device 510, a second light path control device 520, a first convex lens 310, a second convex lens 360, and reflective members 411, 412, 413, 414, 415, 416, 421, 422, 423, 424, 425, and 426 (see Fig.28 ).

[0196] The lens 100 may be formed of glass or plastic in a transparent or translucent manner. Therefore, the user may view a real image through the lens 100. The lens 100 may have a predetermined refractive power in consideration of the visual acuity of the user.

[0197] like Fig. 27 As shown in , the lens 100 may include a first lens unit 101, a second lens unit 102, and a third lens unit 103 disposed between the first lens unit 101 and the second lens unit 102. The first lens unit 101 may be formed as a hexahedron having a quadrilateral exit surface SF11, a surface SF12 opposite to the exit surface SF11, and four side surfaces SIF11 to SIF14. The second lens unit 102 may be formed as a hexahedron having a quadrilateral exit surface SF21, a surface SF22 opposite to the exit surface SF21, and four side surfaces SIF21 to SIF24. The third lens unit 103 may be formed as a hexahedron having a quadrilateral first surface SF31, a second surface SF32, and four side surfaces SIF31 to SIF34.

[0198] The upper side surface SIF12 of the first lens unit 101 may extend from one side of the right side surface SIF11, the lower side surface SIF13 of the first lens unit 101 may extend from the other side opposite to the one side of the right side surface SIF11, and the left side surface SIF14 of the first lens unit 101 may face the right side surface SIF11. The exit surface SF11 may be a top surface, and the surface SF12 opposite to the exit surface SF11 may be a bottom surface. The exit surface SF11 of the first lens unit 101 (i.e., the surface where the user's right eye RE is located) may be a surface from which light is emitted through the reflective members 411, 412, 413, 414, 415 and 416, and the surface SF12 opposite to the exit surface SF11 may be an outer surface of the lens 100.

[0199] The upper side surface SIF22 of the second lens unit 102 may extend from one side of the left side surface SIF21, the lower side surface SIF23 of the second lens unit 102 may extend from the other side opposite to the side of the left side surface SIF21, and the right side surface SIF24 of the second lens unit 102 may face the left side surface SIF21. The exit surface SF21 may be a top surface, and the surface SF22 opposite to the exit surface SF21 may be a bottom surface. The exit surface SF21 (i.e., the surface where the user's right eye RE is located) may be a surface from which light is emitted through the reflective members 421, 422, 423, 424, 425 and 426, and the surface SF22 opposite to the exit surface SF21 may be an outer surface of the lens 100.

[0200] A right side surface SIF33 of the third lens unit 103 may extend from one side of the upper side surface SIF31, a left side surface SIF34 of the third lens unit 103 may extend from the other side opposite to the one side of the upper side surface SIF31, and a lower side surface SIF32 of the third lens unit 103 may face the upper side surface SIF31. The first surface SF31 may be a top surface, and the second surface SF32 may be a bottom surface.

[0201] A left side surface SIF14 of the first lens unit 101 and a right side surface SIF33 of the third lens unit 103 may contact each other, and a right side surface SIF24 of the second lens unit 102 and a left side surface SIF34 of the third lens unit 103 may contact each other.

[0202] although Fig. 27 It is shown that the first lens unit 101, the second lens unit 102, and the third lens unit 103 of the lens 100 are formed as a hexahedron, but the embodiments of the present disclosure are not limited thereto. That is, each of the first lens unit 101, the second lens unit 102, and the third lens unit 103 of the lens 100 may be formed as a polyhedron having a polygonal first surface, a second surface, and a side surface. In addition, in addition to the polyhedron, each of the first lens unit 101, the second lens unit 102, and the third lens unit 103 of the lens 100 may be formed into other shapes, such as a cylinder, an elliptical cylinder, a semi-circular cylinder, a semi-elliptical cylinder, a deformed cylinder, or a deformed semi-circular cylinder. The deformed cylinder and the deformed semi-circular cylinder refer to a cylinder and a semi-circular cylinder having a non-constant diameter.

[0203] Reflective members 411, 412, 413, 414, 415, and 416 are disposed in the first lens unit 101 of the lens 100. Reflective members 421, 422, 423, 424, 425, and 426 are disposed in the second lens unit 102 of the lens 100. Reflective members 411, 412, 413, 414, 415, 416, 421, 422, 423, 424, 425, and 426 may be substantially combined with Figure 1 and Figure 2 Same as those described above.

[0204] The virtual image displayed on the first display device 210 or the virtual image displayed on the second display device 220 may be reflected by the reflective members 411, 412, 413, 414, 415, and 416 and provided to the right eye RE of the user. The virtual image displayed on the first display device 210 or the virtual image displayed on the second display device 220 may be reflected by the reflective members 421, 422, 423, 424, 425, and 426 and provided to the left eye of the user.

[0205] The first light path control device 510 may be disposed on any one of the side surfaces of the first lens unit 101, and the second light path control device 520 may be disposed on any one of the side surfaces of the second lens unit 102. For example, the first light path control device 510 may be disposed on the upper side surface SIF12 of the first lens unit 101, and the second light path control device 520 may be disposed on the upper side surface SIF22 of the second lens unit 102.

[0206] Each of the first light path control device 510 and the second light path control device 520 can selectively change the path of the incident light. For example, each of the first light path control device 510 and the second light path control device 520 can output the incident light without changing the path of the incident light. In addition, each of the first light path control device 510 and the second light path control device 520 can change the path of the incident light.

[0207] The first convex lens 310 may be disposed on the first light path control device 510, and the second convex lens 360 may be disposed on the second light path control device 520. Each of the first convex lens 310 and the second convex lens 360 may be formed as a plano-convex lens or a bi-convex lens.

[0208] The first display device 210 may be disposed on the first convex lens 310, and the second display device 220 may be disposed on the second convex lens 360. The first display device 210 and the second display device 220 may be substantially combined with Figure 1 and Figure 2 The first display device 210 and the second display device 220 are described to be the same.

[0209] Figures 28 to 33 An example of a method of providing augmented reality using an optical device according to one embodiment is shown.

[0210] Reference Figures 28 to 33 , the first display panel 211 may display the first virtual image IM1 during the first period, the second virtual image IM2 during the second period, and the third virtual image IM3 during the third period. The first display panel 211 may display the fourth virtual image IM4 during the fourth period, the fifth virtual image IM5 during the fifth period, and the sixth virtual image IM6 during the sixth period. The first period, the second period, the third period, the fourth period, the fifth period, and the sixth period may be repeatedly arranged. The first virtual image IM1, the second virtual image IM2, the third virtual image IM3, the fourth virtual image IM4, the fifth virtual image IM5, and the sixth virtual image IM6 may be different from each other or may be the same.

[0211] First, during the first period, the first virtual image IM1 displayed on the first display panel 211 is focused by the first convex lens 310 and incident on the first light path control device 510. During the first period, the first virtual image IM1 displayed on the first display panel 211 may be output through the first light path control device 510 without a light path change.

[0212] like Fig.28 As shown in , during the first period, the first virtual image IM1 outputted by the first optical path control device 510 without optical path change may be incident on the upper side surface SIF12 of the first lens unit 101 and propagate to the first reflection member 411. During the first period, the first virtual image IM1 may be reflected by the first reflection member 411 and emitted to the exit surface SF11 of the first lens unit 101 where the right eye RE of the user is disposed. Accordingly, the first virtual image IM1 may be focused on the retina of the right eye RE of the user. Therefore, the user may view the first virtual image IM1 together with the real image during the first period without moving the focus set on the real image.

[0213] Second, during the second period, the second virtual image IM2 displayed on the first display panel 211 is focused by the first convex lens 310 and is incident on the first light path control device 510. During the second period, the second virtual image IM2 displayed on the first display panel 211 may be output after the light path is changed to the first direction by the first light path control device 510. When it is assumed that the second virtual image IM2 is incident in the height direction (Y-axis direction) of the first lens unit 101, the first direction may be inclined at a tenth angle θ10 relative to the height direction (Y-axis direction) of the first lens unit 101.

[0214] like Fig.29 As shown in , during the second period, the second virtual image IM2 whose optical path has been changed to the first direction by the first optical path control device 510 may be incident on the upper surface SIF12 of the first lens unit 101 and propagate to the left side surface SIF14 of the first lens unit 101. The second virtual image IM2 may be totally reflected by the left side surface SIF14 of the first lens unit 101 and propagate to the lower side surface SIF13 of the first lens unit 101. The second virtual image IM2 may be reflected by a reflective sheet (not shown) disposed on the lower side surface SIF13 of the first lens unit 101 and propagate to the second reflective member 412. During the second period, the second virtual image IM2 may be reflected by the second reflective member 412 and emitted to the exit surface SF11 of the first lens unit 101 where the right eye RE of the user is disposed. Accordingly, the second virtual image IM2 may be focused on the retina of the right eye RE of the user. Therefore, during the second period, the user may view the second virtual image IM2 together with the real image without moving the focus set on the real image.

[0215] Third, the image is focused by the first convex lens 310 and is incident on the first optical path control device 510. During the third period, the third virtual image IM3 displayed on the first display panel 211 may be output after the optical path is changed to the second direction by the first optical path control device 510. When it is assumed that the second virtual image IM2 is incident in the height direction (Y-axis direction) of the first lens unit 101, the second direction may be inclined at an eleventh angle θ11 relative to the height direction (Y-axis direction) of the first lens unit 101. The eleventh angle θ11 may be greater than the tenth angle θ10.

[0216] like Fig.30As shown in , during the third period, the third virtual image IM3 whose optical path has been changed to the second direction by the first optical path control device 510 may be incident on the upper side surface SIF12 of the first lens unit 101 and propagate to the left side surface SIF14 of the first lens unit 101. The third virtual image IM3 may be totally reflected by the left side surface SIF14 of the first lens unit 101 and propagate to the lower side surface SIF13 of the first lens unit 101. The third virtual image IM3 may be reflected by a reflective sheet (not shown) disposed on the lower side surface SIF13 of the first lens unit 101 and propagate to the right side surface SIF11 of the first lens unit 101. The third virtual image IM3 may be totally reflected by the right side surface SIF11 of the first lens unit 101 and propagate to the third reflective member 413. During the third period, the third virtual image IM3 may be reflected by the third reflective member 413 and emitted to the exit surface SF11 of the first lens unit 101 where the user's right eye RE is disposed. Therefore, the third virtual image IM3 may be focused on the retina of the user's right eye RE. Therefore, during the third period, the user may view the third virtual image IM3 together with the real image without moving the focus set on the real image.

[0217] Fourth, during the fourth period, the fourth virtual image IM4 displayed on the first display panel 211 is focused by the first convex lens 310 and is incident on the first optical path control device 510. During the fourth period, the fourth virtual image IM4 displayed on the first display panel 211 may be output after the optical path is changed to the third direction by the first optical path control device 510. When it is assumed that the fourth virtual image IM4 is incident in the height direction (Y-axis direction) of the first lens unit 101, the third direction may be inclined at a twelfth angle θ12 relative to the height direction (Y-axis direction) of the first lens unit 101. The twelfth angle θ12 may be greater than the eleventh angle θ11.

[0218] like Fig.31As shown in FIG. 5 , during the fourth period, the fourth virtual image IM4 whose optical path has been changed to the third direction by the first optical path control device 510 may be incident on the upper side surface SIF12 of the first lens unit 101 and propagate to the lower side surface SIF32 of the third lens unit 103. The fourth virtual image IM4 may be reflected by the fourth reflection sheet 710 disposed on the lower side surface SIF32 of the third lens unit 103 and propagate to the upper side surface SIF31 of the third lens unit 103. The fourth virtual image IM4 may be reflected by the fifth reflection sheet 720 disposed on the upper side surface SIF31 of the third lens unit 103 and propagate to the lower side surface SIF32 of the third lens unit 103. The fourth virtual image IM4 may be totally reflected by the upper side surface SIF22 of the second lens unit 102 and propagate to the fourth reflection member 424 of the second lens unit 102. During the fourth period, the fourth virtual image IM4 may be reflected by the fourth reflection member 424 and emitted to the exit surface SF21 of the second lens unit 102 where the left eye of the user is disposed. Therefore, the fourth virtual image IM4 may be focused on the retina of the left eye of the user.Therefore, the user may view the fourth virtual image IM4 together with the real image during the fourth period without moving the focus set on the real image.

[0219] Fifth, during the fifth period, the fifth virtual image IM5 displayed on the first display panel 211 is focused by the first convex lens 310 and is incident on the first light path control device 510. During the fifth period, the fifth virtual image IM5 displayed on the first display panel 211 may be output after the light path is changed to the fourth direction by the first light path control device 510. When it is assumed that the fifth virtual image IM5 is incident in the height direction (Y-axis direction) of the first lens unit 101, the fourth direction may be inclined at a thirteenth angle θ13 relative to the height direction (Y-axis direction) of the first lens unit 101. The thirteenth angle θ13 may be greater than the twelfth angle θ12.

[0220] like Fig.32As shown in , during the fifth period, the fifth virtual image IM5 whose optical path has been changed to the fourth direction by the first optical path control device 510 may be incident on the upper side surface SIF12 of the first lens unit 101 and propagate to the lower side surface SIF32 of the third lens unit 103. The fifth virtual image IM5 may be reflected by the fourth reflection sheet 710 disposed on the lower side surface SIF32 of the third lens unit 103 and propagate to the upper side surface SIF22 of the second lens unit 102. The fifth virtual image IM5 may be totally reflected by the upper side surface SIF22 of the second lens unit 102 and propagate to the left side surface SIF21 of the second lens unit 102. The fifth virtual image IM5 may be totally reflected by the left side surface SIF21 of the second lens unit 102 and propagate to the lower side surface SIF23 of the second lens unit 102. The fifth virtual image IM5 may be reflected by the sixth reflection sheet (not shown) disposed on the lower side surface SIF23 of the second lens unit 102 and propagate to the right side surface SIF34 of the second lens unit 102. The fifth virtual image IM5 may be totally reflected by the right side surface SIF34 of the second lens unit 102 and propagate to the fifth reflection member 425 of the second lens unit 102. During the fifth period, the fifth virtual image IM5 may be reflected by the fifth reflection member 425 and emitted to the exit surface SF21 of the second lens unit 102 where the left eye of the user is disposed. Accordingly, the fifth virtual image IM5 may be focused on the retina of the left eye of the user. Therefore, the user may view the fifth virtual image IM5 together with the real image during the fifth period without moving the focus set on the real image.

[0221] Sixth, during the sixth period, the sixth virtual image IM6 displayed on the first display panel 211 is focused by the first convex lens 310 and is incident on the first light path control device 510. During the sixth period, the sixth virtual image IM6 displayed on the first display panel 211 may be output after the light path is changed to the fifth direction by the first light path control device 510. When it is assumed that the sixth virtual image IM6 is incident in the height direction (Y-axis direction) of the first lens unit 101, the fifth direction may be inclined at a fourteenth angle θ14 relative to the height direction (Y-axis direction) of the first lens unit 101. The fourteenth angle θ14 may be greater than the thirteenth angle θ13.

[0222] like Fig.33As shown in , during the sixth period, the sixth virtual image IM6 whose optical path has been changed to the fifth direction by the first optical path control device 510 may be incident on the upper side surface SIF12 of the first lens unit 101 and propagate to the lower side surface SIF32 of the third lens unit 103. The sixth virtual image IM6 may be reflected by the fourth reflection sheet 710 disposed on the lower side surface SIF32 of the third lens unit 103 and propagate to the upper side surface SIF22 of the second lens unit 102. The sixth virtual image IM6 may be totally reflected by the upper side surface SIF22 of the second lens unit 102 and propagate to the left side surface SIF21 of the second lens unit 102. The sixth virtual image IM6 may be totally reflected by the left side surface SIF21 of the second lens unit 102 and propagate to the sixth reflection member 426. During the sixth period, the sixth virtual image IM6 may be reflected by the sixth reflection member 426 and emitted to the exit surface SF21 of the second lens unit 102 where the left eye of the user is disposed. Accordingly, the sixth virtual image IM6 may be focused on the retina of the left eye of the user. Therefore, during the sixth period, the user may view the sixth virtual image IM6 together with the real image without moving the focus set on the real image.

[0223] The optical path from the first display panel 211 from which the second virtual image IM2 is emitted to the retina of the right eye RE of the user to which the second virtual image IM2 is provided may be longer than the optical path from the first display panel 211 from which the first virtual image IM1 is emitted to the retina of the right eye RE of the user to which the first virtual image IM1 is provided. In addition, the optical path from the first display panel 211 from which the third virtual image IM3 is emitted to the retina of the right eye RE of the user to which the third virtual image IM3 is provided may be longer than the optical path from the first display panel 211 from which the second virtual image IM2 is emitted to the retina of the right eye RE of the user to which the second virtual image IM2 is provided. In addition, the optical path from the first display panel 211 from which the sixth virtual image IM6 is emitted to the retina of the left eye of the user to which the sixth virtual image IM6 is provided may be longer than the optical path from the first display panel 211 from which the third virtual image IM3 is emitted to the retina of the right eye RE of the user to which the third virtual image IM3 is provided. In addition, an optical path from the first display panel 211 from which the fourth virtual image IM4 is emitted to the retina of the left eye of the user to which the fourth virtual image IM4 is provided may be longer than an optical path from the first display panel 211 from which the sixth virtual image IM6 is emitted to the retina of the left eye of the user to which the sixth virtual image IM6 is provided. In addition, an optical path from the first display panel 211 from which the fifth virtual image IM5 is emitted to the retina of the left eye of the user to which the fifth virtual image IM5 is provided may be longer than an optical path from the first display panel 211 from which the fourth virtual image IM4 is emitted to the retina of the left eye of the user to which the fourth virtual image IM4 is provided.

[0224] Therefore, the depth of the fifth virtual image IM5 viewed by the user may be the largest, and the depth of the fourth virtual image IM4 may be the second largest. The sixth virtual image IM6 may be the third largest, and the third virtual image IM3 may be the fourth largest. The depth of the second virtual image IM2 may be the fifth largest, and the depth of the first virtual image IM1 may be the smallest. That is, the user may view a plurality of virtual images IM1, IM2, IM3, IM4, IM5, and IM6 having different depths.

[0225] In addition, since the optical paths of the first to sixth virtual images IM1, IM2, IM3, IM4, IM5 and IM6 displayed on the second display panel 221 are symmetrical with the optical paths of the first to sixth virtual images IM1, IM2, IM3, IM4, IM5 and IM6 displayed on the first display panel 211, their description will be omitted.

[0226] In addition, the first virtual image IM1, the second virtual image IM2, and the third virtual image IM3 displayed on the first display panel 211 may be reflected by the reflective members 411, 412, and 413 of the first lens unit 101 and provided to the right eye RE of the user, and the fourth virtual image IM4, the fifth virtual image IM5, and the sixth virtual image IM6 displayed on the first display panel 211 may be reflected by the reflective members 424, 425, and 426 of the second lens unit 102 and provided to the left eye of the user. In addition, the first virtual image IM1, the second virtual image IM2, and the third virtual image IM3 displayed on the second display panel 221 may be reflected by the reflective members 421, 422, and 423 of the second lens unit 102 and provided to the left eye of the user, and the fourth virtual image IM4, the fifth virtual image IM5, and the sixth virtual image IM6 displayed on the second display panel 221 may be reflected by the reflective members 414, 415, and 416 of the first lens unit 101 and provided to the right eye RE of the user.

[0227] At the same time, in order to increase the optical path between the first display panel 211 and the user's right eye RE and left eye, as shown in FIG. Fig.10 and Fig.11 As shown in FIG. 1 , the first optical path adjustment unit 320 and the third convex lens 330 may be additionally disposed between the first display panel 211 and the first convex lens 310. In addition, in order to increase the optical path between the second display panel 221 and the user's right eye RE and left eye, as shown in FIG. Fig.10 and Fig.11 As shown in , the second light path adjusting unit 370 and the fourth convex lens 380 may be additionally disposed between the second display panel 221 and the second convex lens 360 .

[0228] Figure 34 to Figure 39Shows Fig.26 An example of a first optical path control device.

[0229] Figure 34 to Figure 39 The embodiment shown in Figure 22 to Figure 25 The difference between the embodiment shown in is that the first light path control device 510 further includes a third sub-light path control device 1530. Figure 34 to Figure 39 In this paper, the main description and Figure 22 to Figure 25 The differences between the embodiments shown in FIG.

[0230] Reference Figure 34 to Figure 39 , the third sub-light path control device 1530 may include a fifth substrate 531, a sixth substrate 532, a fifth electrode 533, a sixth electrode 534, a third alignment layer 535, a third liquid crystal layer 537, and a third single refractive index layer 538. The fifth substrate 531, the sixth substrate 532, the fifth electrode 533, the sixth electrode 534, the third alignment layer 535, the third liquid crystal layer 537, and the third single refractive index layer 538 of the third sub-light path control device 1530 are similar to Figure 22 to Figure 25 The third substrate 521, the fourth substrate 522, the third electrode 523, the fourth electrode 524, the second alignment layer 525, the second liquid crystal layer 527 and the second single refractive index layer 528 of the second sub-light path control device 1520 described in the embodiment of the present invention will be mainly described. Figure 34 to Figure 39 The third sub-optical path control device 1530 shown in Figure 22 to Figure 25 The difference between the second sub-optical path control device 1520 shown in .

[0231] like Figure 34 to Figure 39 As shown in , the boundary between the third liquid crystal layer 537 and the third single refractive index layer 538 may be formed in the form of a prism. The boundary between the third liquid crystal layer 537 and the third single refractive index layer 538 may be inclined at a fifteenth angle θ15 relative to the horizontal direction (Z-axis direction). The fifteenth angle θ15 may be smaller than the fifth angle θ5. Therefore, the light L of the first display panel 211 The angle of refraction at the boundary between the third liquid crystal layer 537 and the third single refractive index layer 538 may be smaller than that of the light L of the first display panel 211. Angle of refraction at the boundary between the first liquid crystal layer 517 and the first single refractive index layer 518. In addition, the pitch of the prism mountain formed by the boundary between the third liquid crystal layer 537 and the third single refractive index layer 538 may be greater than the pitch of the prism mountain formed by the boundary between the first liquid crystal layer 517 and the first single refractive index layer 518.

[0232] like Fig.34As shown in FIG. 5 , when the liquid crystals 517 a of the first liquid crystal layer 517 are arranged in the vertical direction (Y-axis direction), the liquid crystals 527 a of the second liquid crystal layer 527 are arranged in the vertical direction (Y-axis direction), the liquid crystals 537 a of the third liquid crystal layer 537 are arranged in the vertical direction (Y-axis direction), and the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The liquid crystals 517a of the first liquid crystal layer 517, the liquid crystals 527a of the second liquid crystal layer 527, and the liquid crystals 537a of the third liquid crystal layer 537 may have an ordinary refractive index n. o In this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be substantially the same. The refractive index of the second single refractive index layer 528 and the refractive index of the liquid crystal 527a of the second liquid crystal layer 527 may be substantially the same. The refractive index of the third single refractive index layer 538 and the refractive index of the liquid crystal 537a of the third liquid crystal layer 537 may be substantially the same. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be output without being refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517. The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be output without being refracted at the boundary between the second single refractive index layer 528 and the second liquid crystal layer 527. It can be output without being refracted at the boundary between the third single refractive index layer 538 and the third liquid crystal layer 537 .

[0233] like Fig.35 As shown in FIG. 5 , when the liquid crystals 517a of the first liquid crystal layer 517 are arranged in the vertical direction (Y-axis direction), the liquid crystals 527a of the second liquid crystal layer 527 are arranged in the vertical direction (Y-axis direction), and the liquid crystals 537a of the third liquid crystal layer 537 are arranged in the horizontal direction (Z-axis direction), and the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The liquid crystals 517a of the first liquid crystal layer 517 and the liquid crystals 527a of the second liquid crystal layer 527 may have an ordinary refractive index n o , and the liquid crystal 537a of the third liquid crystal layer 537 may have an extraordinary refractive index n eIn this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be substantially the same. The refractive index of the second single refractive index layer 528 and the refractive index of the liquid crystal 527a of the second liquid crystal layer 527 may be substantially the same. The refractive index of the third single refractive index layer 538 and the refractive index of the liquid crystal 537a of the third liquid crystal layer 537 may be different from each other. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be output without being refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517. The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be output without being refracted at the boundary between the second single refractive index layer 528 and the first liquid crystal layer 527. The light L incident on the first light path control device 510 of the first display panel 211 may be refracted at the boundary between the third single refractive index layer 538 and the third liquid crystal layer 537. In other words, the light L incident on the first light path control device 510 of the first display panel 211 may be changed. For example, the light L incident on the first display panel 211 in the vertical direction (Y-axis direction) The light emitting diode may be refracted at a tenth angle θ10 with respect to the vertical direction (Y-axis direction).

[0234] like Fig.36 As shown in FIG. 5 , when the liquid crystals 517 a of the first liquid crystal layer 517 are arranged in the horizontal direction (Z-axis direction), the liquid crystals 527 a of the second liquid crystal layer 527 are arranged in the vertical direction (Y-axis direction), the liquid crystals 537 a of the third liquid crystal layer 537 are arranged in the vertical direction (Y-axis direction), and the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The liquid crystal 517a of the first liquid crystal layer 517 may have an extraordinary refractive index n e , and the liquid crystals 527a of the second liquid crystal layer 527 and the liquid crystals 537a of the third liquid crystal layer 537 may have an ordinary refractive index n o In this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be different. The refractive index of the second single refractive index layer 528 and the refractive index of the liquid crystal 527a of the second liquid crystal layer 527 may be substantially the same. The refractive index of the third single refractive index layer 538 and the refractive index of the liquid crystal 537a of the third liquid crystal layer 537 may be substantially the same. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517. The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be output without being refracted at the boundary between the second single refractive index layer 528 and the second liquid crystal layer 527. The light L incident on the first light path control device 510 of the first display panel 211 may be output without being refracted at the boundary between the third single refractive index layer 538 and the third liquid crystal layer 537. For example, the light L incident on the first display panel 211 in the vertical direction (Y-axis direction) The light may be refracted at an eleventh angle θ11 with respect to the vertical direction (Y-axis direction).

[0235] like Fig.37 As shown in FIG. 5 , when the liquid crystals 517 a of the first liquid crystal layer 517 are arranged in the vertical direction (Y-axis direction), the liquid crystals 527 a of the second liquid crystal layer 527 are arranged in the horizontal direction (Z-axis direction), the liquid crystals 537 a of the third liquid crystal layer 537 are arranged in the vertical direction (Y-axis direction), and the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The liquid crystal 517a of the first liquid crystal layer 517 and the liquid crystal 537a of the third liquid crystal layer 537 may have an ordinary refractive index n o The liquid crystal 527a of the second liquid crystal layer 527 may have an extraordinary refractive index n e In this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be substantially the same. The refractive index of the second single refractive index layer 528 and the refractive index of the liquid crystal 527a of the second liquid crystal layer 527 may be different from each other. The refractive index of the third single refractive index layer 538 and the refractive index of the liquid crystal 537a of the third liquid crystal layer 537 may be substantially the same. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be output without being refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517. The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be refracted at the boundary between the second single refractive index layer 528 and the second liquid crystal layer 527. The light L incident on the first light path control device 510 of the first display panel 211 may be output without being refracted at the boundary between the third single refractive index layer 538 and the third liquid crystal layer 537. For example, the light L incident on the first display panel 211 in the vertical direction (Y-axis direction) The light may be refracted at a twelfth angle θ12 with respect to the vertical direction (Y-axis direction).

[0236] like Fig.38 As shown in FIG. 5 , when the liquid crystals 517 a of the first liquid crystal layer 517 are arranged in the horizontal direction (Z-axis direction), the liquid crystals 527 a of the second liquid crystal layer 527 are arranged in the vertical direction (Y-axis direction), and the liquid crystals 537 a of the third liquid crystal layer 537 are arranged in the horizontal direction (Z-axis direction), and the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The liquid crystals 517a of the first liquid crystal layer 517 and the liquid crystals 537a of the third liquid crystal layer 537 may have an extraordinary refractive index n e , and the liquid crystal 527a of the second liquid crystal layer 527 may have an ordinary refractive index n o In this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be different. The refractive index of the second single refractive index layer 528 and the refractive index of the liquid crystal 527a of the second liquid crystal layer 527 may be substantially the same. The refractive index of the third single refractive index layer 538 and the refractive index of the liquid crystal 537a of the third liquid crystal layer 537 may be different from each other. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517. The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be output without being refracted at the boundary between the second single refractive index layer 528 and the second liquid crystal layer 527. The light L incident on the first light path control device 510 of the first display panel 211 may be refracted at the boundary between the third single refractive index layer 538 and the third liquid crystal layer 537. In other words, the light L incident on the first light path control device 510 of the first display panel 211 may be changed. For example, the light L incident on the first display panel 211 in the vertical direction (Y-axis direction) May be refracted at a thirteenth angle θ13 with respect to the vertical direction (Y-axis direction).

[0237] like Fig.39 As shown in FIG. 5 , when the liquid crystals 517 a of the first liquid crystal layer 517 are arranged in the vertical direction (Y-axis direction), the liquid crystals 527 a of the second liquid crystal layer 527 are arranged in the horizontal direction (Z-axis direction), the liquid crystals 537 a of the third liquid crystal layer 537 are arranged in the horizontal direction (Z-axis direction), and the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The liquid crystal 527a of the second liquid crystal layer 527 and the liquid crystal 537a of the third liquid crystal layer 537 may have an extraordinary refractive index n e , and the liquid crystal 517a of the first liquid crystal layer 517 may have an ordinary refractive index n o In this case, the refractive index of the first single refractive index layer 518 and the refractive index of the liquid crystal 517a of the first liquid crystal layer 517 may be substantially the same. The refractive index of the second single refractive index layer 528 and the refractive index of the liquid crystal 527a of the second liquid crystal layer 527 may be different from each other. The refractive index of the third single refractive index layer 538 and the refractive index of the liquid crystal 537a of the third liquid crystal layer 537 may be different from each other. Therefore, the light L vibrating in the horizontal direction (Z-axis direction) of the first display panel 211 The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be output without being refracted at the boundary between the first single refractive index layer 518 and the first liquid crystal layer 517. The light L of the first display panel 211 vibrating in the horizontal direction (Z-axis direction) may be refracted at the boundary between the second single refractive index layer 528 and the second liquid crystal layer 527. The light L incident on the first light path control device 510 of the first display panel 211 may be refracted at the boundary between the third single refractive index layer 538 and the third liquid crystal layer 537. In other words, the light L incident on the first light path control device 510 of the first display panel 211 may be changed. For example, the light L incident on the first display panel 211 in the vertical direction (Y-axis direction) May be refracted at a fourteenth angle θ14 with respect to the vertical direction (Y-axis direction).

[0238] according to Figure 34 to Figure 39 In the embodiment shown in , by controlling the liquid crystals 517a of the first liquid crystal layer 517, the liquid crystals 527a of the second liquid crystal layer 527, and the liquid crystals 537a of the third liquid crystal layer 537, the light incident on the first light path control device 510 can be output after the light path of the light incident on the first light path control device 510 is selectively changed to any one of six directions. In other words, the path of the light output from the first display panel 211 can be selectively changed by the first light path control device 510.

[0239] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art may implement the present invention in other specific forms without changing the technical spirit or basic features of the present invention. Therefore, it should be understood that the embodiments described above are illustrative in all aspects and not restrictive.

Claims

1. An optical device, comprising: A lens comprising a first surface and a plurality of side surfaces; a display device disposed on a first side surface of the plurality of side surfaces of the lens and configured to provide light to the first side surface of the lens; an optical path control device, disposed between the first side surface of the lens and the display device, and configured to selectively change an optical path of a virtual image of the display device; as well as a plurality of reflective members disposed in the lens and configured to reflect light of the display device to the first surface, wherein: The optical path control device outputs a first virtual image of the display device without changing the optical path during a first period, and the output first virtual image is incident on a first reflective member among the plurality of reflective members, and The optical path control device outputs a second virtual image of the display device to an optical path in a first direction at a predetermined angle to an incident direction of the second virtual image during a second period, and the output second virtual image is incident on a second reflective member among the plurality of reflective members.

2. The optical device according to claim 1, wherein: The plurality of reflective members include: the first reflecting member being configured to reflect the first virtual image to the first surface during the first period; and The second reflecting member is configured to reflect the second virtual image to the first surface during the second period.

3. The optical device according to claim 1, wherein: The second reflecting member is configured to reflect the second virtual image reflected from a second side surface among the plurality of side surfaces to the first surface.

4. The optical device according to claim 3, wherein: The first side surface and the second side surface are surfaces facing each other. 5 . The optical device according to claim 3 , further comprising a first reflection sheet disposed on the second side surface of the lens.

6. The optical device according to claim 3, wherein: The second virtual image is reflected from the first surface of the lens or a second surface opposite to the first surface and propagates to the second side surface.

7. The optical device according to claim 3, wherein: The second virtual image is reflected from a third side surface among the plurality of side surfaces and propagates to the second side surface. 8 . The optical device according to claim 7 , further comprising a second reflection sheet disposed on the third side surface of the lens.

9. The optical device according to claim 2, wherein: The optical path control device outputs a third virtual image of the display device in the second direction during a third period, and outputs a fourth virtual image of the display device in the third direction during a fourth period.

10. The optical device according to claim 9, wherein: The plurality of reflective members further include: a third reflecting member configured to reflect the third virtual image to the first surface during the third period; and A fourth reflecting member is configured to reflect the fourth virtual image to the first surface during the fourth period.

11. The optical device according to claim 10, wherein: The third reflecting member is configured to reflect the third virtual image reflected from the first surface to the first surface, and The fourth reflecting member is configured to reflect the fourth virtual image reflected from a second surface opposite to the first surface to the first surface.

12. The optical device according to claim 10, wherein: The fourth virtual image is reflected from the first surface of the lens and propagates to a second side surface among the plurality of side surfaces, and then the fourth virtual image is reflected from the second side surface and propagates to a second surface opposite to the first surface.

13. The optical device according to claim 1, wherein: The optical path control device includes a first sub-optical path control device, which has a first electrode arranged on a first substrate, a second electrode arranged on a second substrate facing the first substrate, a first liquid crystal layer arranged between the first electrode and the second electrode, and a first single refractive index layer arranged on the first liquid crystal layer.

14. The optical device according to claim 13, wherein: A boundary between the first liquid crystal layer and the first single refractive index layer is inclined at a first angle with respect to a thickness direction of the lens.

15. The optical device according to claim 13, wherein: A boundary between the first liquid crystal layer and the first single refractive index layer has a prism mountain shape. 16 . The optical device according to claim 13 , further comprising a polarizing plate disposed on the second substrate of the first sub-optical path control device and configured to transmit light vibrating in a horizontal direction.

17. The optical device according to claim 16, wherein: When a first driving voltage is applied to the first electrode and a second driving voltage is applied to the second electrode, liquid crystals of the first liquid crystal layer are arranged in a vertical direction, and When the first driving voltage is not applied to the first electrode and the second driving voltage is not applied to the second electrode, the liquid crystals of the first liquid crystal layer are arranged in the horizontal direction.

18. The optical device according to claim 16, wherein: The refractive index of the first single refractive index layer is the same as the ordinary refractive index of the liquid crystal of the first liquid crystal layer.

19. The optical device according to claim 14, wherein: The optical path control device also includes a second sub-optical path control device, which has a third electrode arranged on a third substrate, a fourth electrode arranged on a fourth substrate facing the third substrate, a second liquid crystal layer arranged between the third electrode and the fourth electrode, and a second single refractive index layer arranged on the second liquid crystal layer.

20. The optical device according to claim 19, wherein The boundary between the second liquid crystal layer and the second single refractive index layer is inclined at a second angle different from the first angle with respect to the thickness direction of the lens.

21. The optical device according to claim 19, wherein: The boundary between the first liquid crystal layer and the first single refractive index layer has a first prism mountain shape, and the boundary between the second liquid crystal layer and the second single refractive index layer has a second prism mountain shape, and The pitch of the first prism mountains is different from the pitch of the second prism mountains.

22. The optical apparatus according to claim 1, further comprising a convex lens disposed between the display device and the optical path control component.

23. An optical device comprising: A lens comprising a first lens unit, a second lens unit, and a third lens unit disposed between the first lens unit and the second lens unit; a first display device disposed on a first side surface of the first lens unit and configured to provide a virtual image to the first side surface of the first lens unit; a second display device disposed on a first side surface of the second lens unit and configured to provide a virtual image to the first side surface of the second lens unit; a first optical path control device, disposed between the first side surface of the first lens unit and the first display device, and configured to selectively change an optical path of the virtual image of the first display device; a second optical path control device, disposed between the first side surface of the second lens unit and the second display device, and configured to selectively change an optical path of the virtual image of the second display device; as well as a reflective member disposed in the first lens unit, Among them, one of the reflection components in the first lens unit is configured to reflect the virtual image of the first display device and output it to the first surface of the first lens unit, and the other of the reflection components is configured to reflect the virtual image of the second display device and output it to the first surface of the first lens unit.

24. The optical apparatus according to claim 23, further comprising a reflecting member provided in the second lens unit, in, One of the reflection components in the second lens unit is configured to reflect and output the virtual image of the second display device to a first surface of the second lens unit, and the other of the reflection components in the second lens unit is configured to reflect and output the virtual image of the first display device to the first surface of the second lens unit.

Images