Optical device and electronic device including the same

Abstract

An embodiment discloses an optical device including: a plurality of lenses; a lens barrel in which the plurality of lenses are disposed; a first light guide disposed in the lens barrel; and an opening formed on a side surface of the lens barrel, in which the first light guide is disposed between two lenses of the plurality of lenses, and the opening overlaps the first light guide in a direction perpendicular to the optical axis.

Description

Technical Field

[0001] Embodiments disclosed herein relate to an optical device and an electronic device including the optical device. Background Art

[0002] Virtual reality (VR) refers to a specific environment, situation or technology itself that is created by using artificial technology such as computers and thus simulates reality, but is not the real reality.

[0003] Augmented reality (AR) refers to a technology that superimposes virtual objects or information onto a real environment and makes the virtual objects appear to exist in the original environment.

[0004] Mixed reality (MR) or hybrid reality refers to creating a new environment or new information by mixing the virtual world with the real world. In particular, mixed reality refers to the real-time interaction between the real-time existence of objects in the real world and the real-time existence of objects in the virtual world.

[0005] At this time, the created virtual environment, situation, etc. stimulates the user's five senses and enables the user to experience the virtual world in space or time similar to the real world, thereby freely blurring the boundary between reality and imagination. In addition, the user can not only simply immerse himself in such an environment, but also interact with the objects created in the environment by performing operations, commands or related tasks using actual devices.

[0006] In recent years, research has been actively conducted on devices (or equipment) used in this technical field. However, there is an emerging demand to miniaturize these devices and provide high resolution. Summary of the invention

[0007] [Technical issues]

[0008] An object of an embodiment is to provide an optical device having a more compact size and improved optical uniformity and an electronic device including the optical device, both of which are intended for use in augmented reality (AR) or similar applications.

[0009] Another object of an embodiment is to provide an optical device with improved resolution and an electronic device including the optical device.

[0010] Still another object of an embodiment is to provide an optical device having improved reliability and an electronic device including the optical device.

[0011] Still another object of an embodiment is to provide an optical device that is easy to inspect and has enhanced bonding strength and durability, and an electronic device including the same.

[0012] The objects of the embodiments are not limited to those mentioned above, but may include other objects or effects that can be identified from the means for solving the problems and the embodiments, both of which are described below.

[0013] [Technical solution]

[0014] An optical device according to an embodiment includes: a plurality of lenses; a lens barrel in which the plurality of lenses are arranged; a first light guide arranged in the lens barrel; and an opening portion formed in a side surface of the lens barrel, wherein the first light guide is arranged between two lenses of the plurality of lenses, and wherein the opening portion overlaps with the first light guide in a direction perpendicular to an optical axis.

[0015] The optical device may include a light source device coupled to the opening portion.

[0016] In the optical device, the light source device may include: a housing in which an opening is formed; a second light guide arranged in the housing; and a light source emitting light toward the second light guide.

[0017] The optical arrangement may comprise an intermediate lens arranged between the opening and the second light guide.

[0018] The optical device may include an optical signal generating unit that generates an optical signal including image information, wherein the multiple lenses may include a first lens arranged at a position farthest from the optical signal generating unit and an Nth lens arranged closest to the optical signal generating unit, and wherein the first light guide may be positioned between the first lens and the Nth lens.

[0019] In the optical device, the first light guide may include a first prism, and the second light guide may include a second prism.

[0020] In the optical device, the first prism may include a polarization separation member which reflects the first polarized light and transmits the second polarized light, and the second prism may be obtained by coupling at least two prisms.

[0021] In the optical device, the second prism may have at least two coated surfaces, and one of the at least two coated surfaces may reflect light having the first wavelength and light having the second wavelength, and may transmit light having a third wavelength.

[0022] The optical device may comprise a third light guide arranged between the first light guide and the second light guide.

[0023] In the optical device, the third light guide may include a third prism.

[0024] An optical device according to an embodiment includes: a lens barrel, a first lens and an N-th lens, the first lens and the N-th lens being arranged in sequence at a first position and a last position in the lens barrel, respectively; a first light guide, the first light guide being arranged between the first lens and the N-th lens; an opening portion, the opening portion being formed in a side surface of the lens barrel, and a light source device, the light emitting light, the light being incident on the first light guide through the opening portion, wherein the opening portion is arranged in a region where the first light guide is arranged.

[0025] In the optical device, the light source device may include: a housing having an opening formed therein; a second light guide disposed in the housing;

[0026] a light source emitting light toward the second light guide; and an intermediate lens disposed between the opening and the second light guide.

[0027] The optical device may include a second lens arranged between the first lens and the Nth lens, wherein the first light guide may be arranged between the first lens and the second lens.

[0028] The optical device may include a second lens arranged between the first lens and the Nth lens, wherein the first light guide may be arranged between the second lens and the Nth lens.

[0029] The optical device may include an optical signal generating unit that converts light incident on the first light guide and passing through the Nth lens into an optical signal including image information, wherein the optical signal generated by the optical signal generating unit can be transmitted to the first lens through the Nth lens and the first light guide.

[0030] The optical device may include a display unit that is disposed in front of the first lens and displays the optical signal transmitted to the first lens and including the image information on the display unit.

[0031] In the optical device, at least a portion of the optical signal generated by the optical signal generating unit may pass through the first light guide or be reflected from the first light guide.

[0032] In the optical device, the first light guide may reflect at least a portion of light emitted from the light source and incident on the first light guide to the Nth lens.

[0033] In the optical device, the intermediate lens may have a first surface adjacent to the first light guide and a second surface corresponding to the first surface.

[0034] In the optical device, the second surface may protrude toward the second light guide.

[0035] In the optical device, the first surface may be convex or concave toward the second light guide.

[0036] [Beneficial Effects]

[0037] According to the embodiments, an optical device having a more compact size and improved optical uniformity and an electronic device including the optical device, both of which are intended for augmented reality (AR) or similar applications, may be realized.

[0038] Furthermore, an optical device having improved resolution and an electronic device including the same can be realized.

[0039] Furthermore, an optical device having improved reliability and an electronic device including the optical device can be realized.

[0040] Furthermore, an optical device that is easy to inspect and has enhanced bonding strength and durability, and an electronic device including the same can be realized.

[0041] Various useful advantages and effects of the present invention are not limited to those described above and can be better understood from the detailed description of the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a conceptual diagram illustrating an embodiment of an AI device.

[0043] Figure 2 is a block diagram illustrating a configuration of an extended reality electronic device according to an embodiment of the present invention.

[0044] Figure 3 is a perspective view showing an augmented reality electronic device according to a first embodiment of the present invention.

[0045] Figures 4 to 6 is a conceptual diagram referred to to describe various display technologies applicable to a display unit according to an embodiment of the present invention.

[0046] Figure 7 is a conceptual diagram showing an optical device according to the first embodiment.

[0047] Figure 8 is a perspective view showing an optical device according to the first embodiment.

[0048] Fig. 9 is an exploded perspective view showing the optical device according to the first embodiment.

[0049] Fig.10 is along Figure 8 A cross-sectional view taken along line AA'.

[0050] Fig.11 It is shown Fig.10 An enlarged cross-sectional view of portion K1.

[0051] Fig.12a It is shown Fig.10 An enlarged cross-sectional view of portion K2.

[0052] Figure 12b It is shown Fig.12a A sectional view of a modified example of portion K2.

[0053] Fig.12c It is shown Fig.12a 2 is a sectional view of another modified example of portion K2.

[0054] Fig.12d It is shown Fig.12a 2 is a sectional view of still another modified example of portion K2 of FIG.

[0055] Fig.13a is a conceptual diagram showing an optical device according to a second embodiment.

[0056] Fig.13b It is shown Fig.13a A view of a modified example of the optical device in FIG.

[0057] Fig.13c It is shown Fig.13a A view of another modified example of the optical device in FIG.

[0058] Fig.14a is a conceptual diagram showing an optical device according to a third embodiment.

[0059] Fig.14b It is shown Fig.14a A view of a modified example of the optical device in FIG.

[0060] Fig.14c It is shown Fig.14a A view of another modified example of the optical device in FIG.

[0061] Fig.15a is a conceptual diagram showing an optical device according to a fourth embodiment.

[0062] Fig.15b It is shown Fig.15a A view of a modified example of the optical device in FIG.

[0063] Fig.15c It is shown Fig.15a A view of another modified example of the optical device in FIG. DETAILED DESCRIPTION

[0064] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0065] However, the technical concept of the present invention is not limited to the one or several embodiments described, but can be implemented in various forms. One or more constituent elements of these embodiments can be used by selective combination and replacement within the scope of the technical concept of the present invention.

[0066] In addition, unless otherwise explicitly defined and used, the terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as having the meanings that are generally understood by ordinary technicians in the field to which the present invention belongs. Commonly used terms such as those defined in dictionaries may be interpreted as having the meanings defined in consideration of the contextual meanings in the relevant technology.

[0067] Furthermore, the terms used in the embodiments of the present invention are for describing them and are not intended to impose any limitation on the present invention.

[0068] Unless the context clearly dictates otherwise, throughout this specification, singular terms are intended to include their plural forms. Where the expression "at least one (or one or more) of the following: A, B or C" is used, the expression may be interpreted as including one or more of the possible combinations consisting of A, B and C, either individually or collectively.

[0069] Furthermore, the terms first, second, etc., the terms A, B, etc., the terms (a), (b), etc., and the like may be used to describe constituent elements according to embodiments of the present invention.

[0070] These terms are used only to distinguish one constituent element from another constituent element, and do not impose limitations on the nature, order, sequence, etc. of these constituent elements.

[0071] When a constituent element is described as being "connected to", "coupled to" or "accessible to" another constituent element, it may be directly connected to, directly coupled to or directly accessible to another constituent element. In addition, it may be connected to, coupled to or directly accessible to other constituent elements through constituent elements interposed therebetween.

[0072] Furthermore, where one constituent element is described as being formed or arranged at the “top” or “bottom” of another constituent element, the constituent element may be in direct contact with the other element. Furthermore, where one constituent element is described as being formed or arranged “above” or “below” another constituent element, the constituent element may be formed or arranged with one or more constituent elements interposed therebetween. Furthermore, where one constituent element is described as being at the top (above) or bottom (below) of another element, the upward and downward directions may be defined relative to the position of one of these elements.

[0073] Figure 1 This is a conceptual diagram showing an embodiment of an AI device.

[0074] Referring to Figure 1 , in an AI system, at least one of the following is connected to a cloud network 10: an AI server 16, a robot 11, an autonomous vehicle 12, an XR device 13, a smartphone 14, or a household appliance 15. At this time, all robots 11, autonomous vehicles 12, XR devices 13, smartphones 14, household appliances 15, and similar devices that apply AI technology are referred to as AI devices 11 to 15.

[0075] The cloud network 10 may form part of a cloud computing infrastructure or refer to a network existing within a cloud computing infrastructure. At this time, a 3G network, a 4G or Long Term Evolution (LTE) network, a 5G network, or a similar network may be used to configure the cloud network 10.

[0076] That is, devices 11 to 16 constituting the AI system may be connected to each other through the cloud network 10. Specifically, devices 11 to 16 may communicate with each other through a base station, and may also directly communicate with each other without a base station therebetween.

[0077] The AI server 16 may include a server that performs AI processing and a server that performs calculations on big data.

[0078] The AI server 16 may be connected through the cloud network 10 to at least one of the AI devices constituting the AI system, and the AI devices include a robot 11, an autonomous vehicle 12, an XR device 13, a smartphone 14, and a household appliance 15. The AI server 16 may help the AI devices 11 to 15 to which the AI server 16 is connected perform at least part of the AI processing.

[0079] At this time, representing the AI devices (11 to 15), the AI server 16 may train an artificial intelligence network according to a machine learning algorithm, and directly store the learning model or send the learning model to the AI devices 11 to 15.

[0080] At this time, the AI server 16 may receive input data from the AI devices 11 to 15, infer a result value of the received input data using the learning model, generate a response or control command based on the inferred result value, and send the generated response or control command to the AI devices 11 to 15.

[0081] Alternatively, the AI devices 11 to 15 may directly use the learning model to infer the result value of the input data, and also generate a response or control command based on the inferred result value.

[0082] <AI + Robot>

[0083] The robot 11 can be implemented as a guiding robot, a carrying robot, a cleaning robot, a wearable robot, an entertainment robot, a pet robot, an unmanned flying robot, etc., each of which applies AI technology.

[0084] The robot 11 may include a robot control module for controlling the operation thereof, and the robot control module may refer to a software module or a chip obtained by implementing the software module as hardware.

[0085] The robot 11 can use sensor information obtained from various types of sensors to obtain its status information, detect (recognize) its surrounding environment and objects, generate map data, determine its movement path and travel plan, determine the response to interaction with the user, or determine its operation.

[0086] At this time, in order to determine its moving path and travel plan, the robot 11 may use sensor information acquired from at least one of the following sensors: a laser radar (LiDAR), a radar, or a camera.

[0087] The robot 11 may perform the above operations using a learning model configured by at least one artificial intelligence network. For example, the robot 11 may use a learning model to identify its surroundings and objects, and determine its operations using information about the surroundings or object information it identifies. At this time, the learning model may be obtained from direct learning in the robot 11, or may be obtained from learning in an external device such as the AI ​​server 16.

[0088] At this time, the robot 11 can directly use the learning model to generate results and perform its operations. However, the robot 11 can also send sensor information to an external device such as the AI ​​server 16, receive results generated based on the sensor information, and perform its operations.

[0089] The robot 11 may determine its moving path and driving plan and control the driving unit using at least one of the following: map data, object information detected according to sensor information, or object information acquired from an external device. Therefore, the robot 11 may travel according to its determined moving path and driving plan.

[0090] The map data may include object recognition information about various objects arranged in the space into which the robot 11 moves. For example, the map data may include object recognition information about fixed objects such as walls and doors and movable objects such as flower pots and tables. In addition, the object recognition information may include the name, type, distance, location, etc. of the object.

[0091] In addition, the robot 11 can control the drive unit under the control of the user or based on the interaction with the user, and thus can perform its operations or travel. At this time, the robot 11 can obtain the intention information of the interaction interpreted according to the movement and voice of the user, determine the response based on the obtained intention information, and perform its operations.

[0092] <AI + Autopilot>

[0093] The autonomous vehicle 12 can be implemented as a mobile robot, a vehicle, or an unmanned aerial vehicle, each of which applies AI technology.

[0094] The autonomous vehicle 12 can include an autonomous driving control module for controlling its autonomous driving function, and the autonomous driving control module can refer to a software module or a chip obtained by implementing the software module as hardware. The autonomous driving control module can be included in the autonomous vehicle 12 as a component. However, the autonomous driving control module can be configured as a separate hardware component and externally connected to the autonomous vehicle 12.

[0095] The autonomous vehicle 12 can use the sensor information obtained from various types of sensors to obtain its status information, detect (identify) its surrounding environment and objects, generate map data, determine its movement path and driving plan, or determine its operations.

[0096] At this time, in order to determine its movement path and driving plan, the autonomous vehicle 12 can use the sensor information obtained from at least one of the following, like the robot 11: a lidar sensor, a radar sensor, or a camera device sensor.

[0097] In particular, the autonomous vehicle 12 can identify the environment or objects in the area hidden outside the field of view or in the area at a predetermined distance or farther by receiving sensor information from an external device. Alternatively, the autonomous vehicle 12 can directly receive the identified information from the external device.

[0098] The autonomous vehicle 12 can use the learning model configured by at least one artificial intelligence network to perform the above operations. For example, the autonomous vehicle 12 can use the learning model to identify its surrounding environment and objects, and use the information about its identified surrounding environment or object information to determine its driving route. At this time, the learning model can be obtained from direct learning in the autonomous vehicle 12 or can be obtained from learning in an external device such as the AI server 16.

[0099] At this time, the autonomous driving vehicle 12 can directly use the learning model to generate results and perform its operations. However, the autonomous driving vehicle 12 can also send sensor information to an external device such as the AI ​​server 16, receive results generated based on the sensor information, and perform its operations.

[0100] The autonomous driving vehicle 12 may determine its moving path and driving plan and control the driving unit using at least one of the following: map data, object information detected according to sensor information, or object information acquired from an external device. Therefore, the autonomous driving vehicle 12 may travel according to its determined moving path and driving plan.

[0101] The map data may include object recognition information about various objects arranged in a space (e.g., a road) into which the autonomous driving vehicle 12 moves. For example, the map data may include object recognition information about fixed objects such as street lights, rocks, and buildings, and movable objects such as vehicles and pedestrians. In addition, the object recognition information may include the name, type, distance, location, etc. of the object.

[0102] In addition, the autonomous driving vehicle 12 can control the driving unit under the control of the user or based on the interaction with the user, and thus can perform its operation or travel. At this time, the autonomous driving vehicle 12 can obtain the intention information of the interaction interpreted according to the user's movement and voice utterance, determine a response based on the obtained intention information, and perform its operation.

[0103] <AI+XR>

[0104] The XR device 13 can be implemented as a head-mounted display (HMD), a head-up display (HUD) set in a vehicle, a television, a mobile phone, a smart phone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a fixed robot, a mobile robot, etc., each of which applies AI technology.

[0105] The XR device 13 can generate position data and attribute data about a three-dimensional point by analyzing three-dimensional point cloud data or image data, which is acquired through various sensors or from an external device. Therefore, the XR device 13 can acquire information about the surrounding space or real objects, render the XR object to be output, and output the XR object. For example, the XR device 13 can output the XR object in a manner corresponding to the recognized object, including additional information about the recognized object.

[0106] The XR device 13 can perform the above operations using a learning model configured by at least one artificial intelligence network. For example, the XR device 13 can use the learning model to identify real objects based on three-dimensional point cloud data or image data, and provide information corresponding to the identified real objects. At this time, the learning model can be obtained from direct learning in the XR device 13, or can be obtained from learning in an external device such as the AI server 16.

[0107] At this time, the XR device 13 can directly use the learning model to generate results and perform its operations. However, the XR device 13 can also send sensor information to an external device such as the AI server 16, receive the results generated based on the sensor information, and perform its operations.

[0108] <AI + Robot + Autopilot>

[0109] The robot 11 can be implemented as a guiding robot, a handling robot, a cleaning robot, a wearable robot, an entertainment robot, a pet robot, an unmanned aerial vehicle, etc., each of which applies AI technology and autopilot technology.

[0110] The robot 11 applying AI technology and autopilot technology can refer to the robot itself equipped with an autopilot function, the robot 11 interacting with the autonomous vehicle 12, or a similar type of robot.

[0111] The robot 11 equipped with an autopilot function can be a general term for devices that move along a given route by themselves without user control or independently determine their routes and move along the determined routes.

[0112] Both the robot 11 equipped with an autopilot function and the autonomous vehicle 12 can use a common sensing method to determine one or more of the following: a movement path or a driving plan. For example, both the robot 11 equipped with an autopilot function and the autonomous vehicle 12 can use the information sensed by lidar, radar, and a camera device to determine at least one of the following: a movement path or a driving plan.

[0113] The robot 11 interacting with the autonomous vehicle 12 can exist independently of the autonomous vehicle 12 and operate in cooperation with the autopilot function inside or outside the autonomous vehicle 12, or cooperate with the user riding in the autonomous vehicle 12 to perform operations.

[0114] At this time, the robot 11 interacting with the autonomous driving vehicle 12 may obtain sensor information on behalf of the autonomous driving vehicle 12 and provide the obtained sensor information to the autonomous driving vehicle 12. Alternatively, the robot 11 may obtain sensor information, generate information on the surrounding environment or object information, and provide the generated information to the autonomous driving vehicle 12. Therefore, the robot 11 may assist the autonomous driving vehicle 12 in performing its autonomous driving function.

[0115] Alternatively, the robot 11 interacting with the autonomous driving vehicle 12 may monitor the user sitting in the autonomous driving vehicle 12 or control the functions of the autonomous driving vehicle 12 through interaction with the user. For example, in the case where it is determined that the driver is drowsy, the robot 11 may activate the autonomous driving function of the autonomous driving vehicle 12, or may assist the autonomous driving vehicle 12 in controlling the drive unit. At this time, the functions of the autonomous driving vehicle 12 controlled by the robot 11 may include not only the autonomous driving function, but also the functions provided in the navigation system or audio system provided in the autonomous driving vehicle 12.

[0116] Alternatively, the robot 11 interacting with the autonomous driving vehicle 12 may provide information to the autonomous driving vehicle 12 from outside the autonomous driving vehicle 12, or assist the autonomous driving vehicle 12 in performing its functions. For example, the robot 11 may provide traffic information including signal information or similar information to the autonomous driving vehicle 12 like an intelligent traffic signal. In addition, the robot 11 may also connect a charger to a charging port by interacting with the autonomous driving vehicle 12 like an automatic charging station for an electric vehicle.

[0117] <AI + Robot + XR>

[0118] The robot 11 may be implemented as a guiding robot, a handling robot, a cleaning robot, a wearable robot, an entertainment robot, a pet robot, an unmanned flying robot, a drone, etc., each of which applies AI technology and XR technology.

[0119] The robot 11 applying XR technology may refer to a robot that is an interaction or control object within an XR image. In this case, the robot 11 is distinguished from the XR device 13 and may operate in combination with the XR device 13.

[0120] When the robot 11, which is an interaction or control object within an XR image, obtains sensor information from a sensor including a camera device, the robot 11 or the XR device 13 may generate an XR image based on the sensor information, and the XR device 13 may output the generated XR image. Then, the robot 11 may operate based on a control signal input through the XR device 13 or interaction with the user.

[0121] For example, a user can remotely check an XR image corresponding to a time point of a robot 11 operating in conjunction with an external device (such as XR device 13) through the external device. In addition, through interaction, the user can adjust the automatic driving path of the robot 11, control the operation or driving of the robot 11, or check information about nearby objects.

[0122] <AI + Autopilot + XR>

[0123] The autonomous vehicle 12 can be implemented as a mobile robot, a vehicle, an unmanned aerial vehicle, etc., each of which applies AI technology and XR technology.

[0124] The autonomous vehicle 12 applying XR technology can refer to an autonomous vehicle including a device that provides XR images, an autonomous vehicle that is an interaction or control object within the XR image, or a vehicle of a similar type. In particular, the autonomous vehicle 12 that is an interaction or control object within the XR image is distinguished from the XR device 13 and can operate in conjunction with the XR device 13.

[0125] The autonomous vehicle 12 including a device that provides XR images can obtain sensor information from a sensor including a camera device and output an XR image generated based on the obtained sensor information. For example, the autonomous vehicle 12 can include a HUD and output an XR image. Therefore, the autonomous vehicle 12 can provide an XR object corresponding to a real object or an object within the screen to the occupant.

[0126] At this time, when an XR object is output on the HUD, at least a part of the XR object can be output so as to overlap with the real object on which the occupant keeps his / her gaze. In contrast, when an XR object is output on a display provided inside the autonomous vehicle 12, at least a part of the XR object can be output so as to overlap with an object within the screen. For example, the autonomous vehicle 12 can output XR objects corresponding to objects such as vehicle roads, other vehicles, traffic signals, traffic signs, two-wheeled vehicles, pedestrians, and buildings.

[0127] When the autonomous vehicle 12 that is an interaction or control object within the XR image obtains sensor information from a sensor including a camera device, the autonomous vehicle 12 or the XR device 13 can generate an XR image based on the sensor information, and the XR device 13 can output the generated XR image. Then, the autonomous vehicle 12 can operate based on a control signal input through an external device such as the XR device 13 or an interaction with the user.

[0128] [Extended Reality Technology]

[0129] Extended reality (XR) is a general term for virtual reality (VR), augmented reality (AR), and mixed reality (MR). Virtual technology only provides objects or backgrounds in the real world as CG images. AR technology provides virtually generated CG images additionally to actual object images. MR technology is a computer graphics technology that presents virtual objects in a way that is seamlessly integrated into the real world.

[0130] MR technology presents real objects and virtual objects together. In this respect, MR technology is similar to AR technology. However, AR technology uses virtual objects as a supplement to real objects. In contrast, MR technology is used in a way that virtual objects and real objects coexist and interact equally. In this respect, AR technology is different from MR technology.

[0131] XR technology can be applied to head-mounted displays (HMDs), heads-up displays (HUDs), mobile phones, tablet PCs, laptop computers, desktop computers, TVs, digital signage, etc. Devices applying XR technology may be referred to as XR devices.

[0132] The following describes an electronic device for providing extended reality according to an embodiment of the present invention, and in particular, describes in detail an optical device suitable for augmented reality and an electronic device including the optical device.

[0133] Figure 2 is a block diagram showing a configuration of an extended reality electronic device 20 according to an embodiment of the present invention.

[0134] Reference Figure 2 The extended reality electronic device 20 may include a wireless communication unit 21, an input unit 22, a sensing unit 23, an output unit 24, an interface unit 25, a memory 26, a control unit 27, a power supply unit 28 and other similar units. Figure 2 The constituent elements shown in are not essential for realizing the electronic device 20. The electronic device 20 described in this specification may have more or fewer constituent elements than those listed above.

[0135] More specifically, among the constituent elements listed above, the wireless communication unit 21 may include one or more modules capable of wireless communication between the electronic device 20 and a wireless communication system, between the electronic device 20 and another electronic device, or between the electronic device 20 and an external server. In addition, the wireless communication unit 21 may include one or more modules that connect the electronic device 20 to one or more networks.

[0136] The wireless communication unit 21 may include at least one of a broadcast receiving module, a mobile communication module, a wireless Internet module, a short-range communication module, or a location information module.

[0137] The input unit 22 may include a camera or an image input unit for inputting an image signal, a microphone or an audio input unit for inputting an audio signal, and a user input unit (e.g., a touch key, a key (mechanical key), etc.) for receiving information from a user as an input. Voice data or image data collected by the input unit 22 may be analyzed and processed into a user's control command.

[0138] The sensing unit 23 may include at least one sensor to sense at least one of internal information of the electronic device 20 , information about the surrounding environment of the electronic device 20 , or user information.

[0139] For example, the sensing unit 23 may include at least one of the following: a proximity sensor, an illumination sensor, a touch sensor, an acceleration sensor, a magnetic sensor, a G sensor, a gyro sensor, a motion sensor, an RGB sensor, an infrared (IR) sensor, a finger scan sensor, an ultrasonic sensor, an optical sensor (e.g., an image capture device), a microphone, a battery gauge, an environmental sensor (e.g., a barometer, a hygrometer, a thermometer, a radiation detection sensor, a thermal sensor, a gas sensor, etc.), or a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). The electronic device 20 disclosed in the present disclosure may utilize information sensed by at least two of these sensors in combination.

[0140] The output unit 24 is used to generate output associated with vision, hearing or touch, and may include at least one of the following: a display unit, a sound output unit, a tactile module or a light output unit. The display unit is configured to be structurally layered with the touch sensor or formed integrally with the touch sensor, thereby being implemented as a touch screen. The touch screen can be used as a user input device to provide an input interface between the augmented reality electronic device 20 and the user, and at the same time can provide an output interface between the augmented reality electronic device 20 and the user.

[0141] The interface unit 25 may serve as a path to various types of external devices connected to the electronic apparatus 20. Virtual reality or augmented reality content may be provided from the external device to the electronic apparatus 20 through the interface unit 25, and mutual interaction may be performed by exchanging various input signals, sensing signals, and data with the external device.

[0142] For example, the interface unit 25 may include at least one of the following: a wired or wireless headset port, an external charger port, a wired or wireless data port, a memory card port, a port for connecting to a device including an identification module, an audio input / output (I / O) port, a video input / output (I / O) port, or a headphone port.

[0143] In addition, data for supporting various functions of the electronic device 20 is stored in the memory 26. A plurality of applications (or programs) executed on the electronic device 20, data for operating the electronic device 20, and commands may be stored in the memory 26. At least one or more of these applications may be downloaded from an external server via wireless communication. At least one or more of these applications may be pre-installed on the electronic device 20 before the electronic device 20 is shipped to perform basic functions of the electronic device 20 (e.g., receiving a call, making a call, receiving a message, and sending a message).

[0144] The control unit 27 generally controls the overall operation of the electronic device 20 in addition to controlling operations associated with application programs. The control unit 27 may process signals, data, information, etc. input or output through the above-mentioned constituent elements.

[0145] In addition, the control unit 27 can control at least one or several of the constituent elements by executing the application program stored in the memory 26. Therefore, the control unit 27 can provide appropriate information to the user or perform functions. In addition, the control unit 27 can operate at least two of the constituent elements included in the electronic device 20 in combination to execute the application program.

[0146] In addition, the control unit 27 may detect the movement of the electronic device 20 or the movement of the user using a gyro sensor, a gravity sensor, a motion sensor, and other sensors included in the sensing unit 23. Alternatively, the control unit 27 may also detect an object approaching the electronic device 20 or the vicinity of the user using a proximity sensor, an illumination sensor, a magnetic sensor, an infrared (IR) sensor, an ultrasonic sensor, an optical sensor, and other sensors included in the sensing unit 23. In addition, the control unit 27 may also detect the movement of the user through a sensor provided in a controller operating in conjunction with the electronic device 20.

[0147] Furthermore, the control unit 27 may perform operations (or functions) of the electronic device 20 using application programs stored in the memory 26 .

[0148] Under the control of the control unit 27, external or internal power is supplied to the power supply unit 28, and then the power supply unit 28 distributes the internal or external power to each of the constituent elements included in the electronic device 20. The power supply unit 28 may include a battery, and the battery may be provided in a built-in or replaceable form.

[0149] At least two or more of the constituent elements may operate in cooperation with each other to operate or control the electronic device according to the various embodiments described above or to implement a method for controlling the electronic device. In addition, the operation or control of the electronic device or the method for controlling the electronic device may be implemented on the electronic device by executing at least one application program stored in the memory 26.

[0150] The electronic device according to the present invention is described below by taking an embodiment applicable to a head-mounted display (HMD) as an example. However, the embodiment of the electronic device according to the present invention may include a mobile phone, a smart phone, a laptop computer, a digital broadcast dedicated terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a tablet PC, a tablet PC, an ultrabook computer, a wearable device, etc. In addition to the HMD, the wearable device may include a watch-type terminal (smart watch), contact lenses, VR / AR / MR glasses, etc.

[0151] Figure 3 is a perspective view showing an augmented reality electronic device according to an embodiment of the present invention.

[0152] like Figure 3 As shown, the electronic device according to the embodiment of the present invention may include a frame 100 , an optical device 200 , and a display unit 300 .

[0153] The electronic device may be provided in the form of smart glasses. The electronic device in the form of smart glasses may be configured to be wearable on a person's head, and for this purpose may include a frame (housing, housing, etc.) 100. The frame 100 may be formed of a flexible material to make it easy to wear.

[0154] The frame 100 is supported on the head of a person and provides a space for mounting various types of components. As shown, electronic components such as the optical device 200, the user input unit 130, or the sound output unit 140 may be mounted on the frame 100. In addition, a lens positioned in front of at least one of the left eye and the right eye of the user may be removably attached to the frame 100.

[0155] As shown, the frame 100 may be in the form of glasses worn on the user's face, but is not necessarily limited thereto. The frame 100 may also be in the form of goggles or a similar configuration worn closely on the user's face.

[0156] The frame 100 may include a front frame 110 and a pair of side frames 120 intersecting the front frame 110, the front frame 110 including at least one opening portion, the pair of side frames 120 extending in the y direction ( Figure 3 The two ends of the first and second electrodes extend parallel to each other.

[0157] The frame 100 may have a length D1 in the x-direction and a length L1 in the y-direction, and D1 and L1 may be the same as or different from each other.

[0158] The optical device 200 is configured to control various types of electronic components provided in an electronic device.

[0159] The optical device 200 may generate an image or image sequence visible to a user. The optical device 200 may include an image source panel, a plurality of lenses, etc. The image source panel generates an image. The plurality of lenses diffuse or converge the light generated in the image source panel.

[0160] The optical device 200 may be fixed to any side frame 120 of the pair of side frames 120. For example, the optical device 200 is fixed to the inside or outside of any side frame 120, or may be integrally formed in a manner of being built into the side frame 120. Alternatively, the optical device 200 may be fixed to the front frame 110, or may also be provided separately from the electronic device.

[0161] The display unit 300 can be implemented in the form of a head-mounted display (HMD). The form of HMD refers to a display technology that makes the image directly visible in front of the user's eyes. The display unit 300 can be arranged in a manner corresponding to at least one of the left eye and the right eye of the user, so that when the user wears the electronic device, the image is provided directly in front of the user's eyes. This figure shows that the display unit 300 is positioned in a portion corresponding to the user's right eye, so that the image is output toward the user's right eye. However, the display unit 300 is not limited to the portion described above. The display unit 300 can also be arranged in portions corresponding to the right eye and the left eye of the user, respectively.

[0162] The display unit 300 may be configured to allow the user to visually recognize the surrounding environment and simultaneously make visible to the user an image generated by the optical device 200. For example, the display unit 300 may project an image onto a display area using a prism.

[0163] In addition, the display unit 300 may be formed of a transparent material so that the projected image and the natural field of view (the range of the user's visual perception) in the forward direction are simultaneously visible. For example, the display unit 300 may be translucent and formed of an optical member including glass.

[0164] Then, the display unit 300 may be fixed to the front frame 110 by being inserted into the opening portion included in the front frame 110. Alternatively, the display unit 300 may be fixed to the front frame 110 by being positioned on the rear surface of the opening portion (i.e., between the opening portion and the user). As an example, the figure shows a case where the display unit 300 is positioned on the rear surface of the opening portion and thus fixed to the front frame 110. In addition to this, the display unit 300 may be arranged and fixed at various positions on the frame 100.

[0165] like Figure 3 As shown, in the electronic device, when the optical device 200 guides image light for an image toward one side of the display unit 300, the image light is emitted to the other side through the display unit 300. Therefore, the image generated by the optical device 200 may be visible to the user.

[0166] Therefore, the user can view the external environment through the opening portion in the frame 100 and simultaneously view the image generated by the optical device 200. That is, the image output through the display unit 300 can be viewed in a manner overlapping with the natural field of view. The electronic device can use these display characteristics to provide augmented reality (AR), which superimposes a virtual image on a real image or background and displays the superimposed result as one image.

[0167] In addition to performing the driving operation, the electronic device can provide the user with the external environment and the image generated by the optical device 200 in a short period of time with a time lag that is imperceptible to humans. For example, the external environment can be provided to the user in one section of a frame, and the image from the optical device 200 can be provided to the user in another section.

[0168] Alternatively, both overlap and time difference may be provided.

[0169] Figures 4 to 6 is a conceptual diagram referred to to describe various display technologies applicable to a display unit according to an embodiment of the present invention.

[0170] Specifically, Figure 4 are views referred to to describe an embodiment of an optical member using prism technology. Figure 5 are views referred to to describe an embodiment of an optical member using a waveguide technology. Figure 6 are views referred to to describe an embodiment of an optical member using a surface reflection technology.

[0171] According to an embodiment of the present invention, Figure 4 As shown, an optical member using prism technology may be used in the display unit 300 - 1 .

[0172] As an embodiment of an optical member using prism technology, Figure 4 As shown in (a) of FIG. 1 , a flat glass optical member having a flat surface on which image light is incident and a flat surface 300a from which image light is emitted may be used. Alternatively, as shown in FIG. Figure 4 As shown in (b), a free-form glass optical member having a surface 300b from which image light is emitted may be used, wherein the surface 300b is formed as a curved surface that does not have a constant radius of curvature.

[0173] The image light generated by the optical device 200 may be incident on the flat side surface of the flat glass optical member, reflected by the total reflection mirror 300a disposed inside the flat glass optical member, and emitted toward the user. At this time, the total reflection mirror 300a to be disposed inside the flat glass optical member may be formed inside the flat glass optical member using a laser.

[0174] The free-form glass optical member may be configured such that the thickness of the free-form glass optical member decreases in a direction away from the surface onto which the image light is incident. Thus, the image light generated by the optical device 200 may be incident on the curved side surface of the free-form glass optical member, be totally reflected inside the free-form glass optical member, and be emitted toward the user.

[0175] According to another embodiment of the present invention, Figure 5 As shown, an optical member using a waveguide technology or a light guide optical element (LOE) may be used in the display unit 300 - 2 .

[0176] As an embodiment of an optical member using waveguide or lightguide technology, it is possible to provide: Figure 5 (a) shows a glass optical component using segmented beam splitter technology, such as Figure 5 (b) A glass optical component using sawtooth prism technology, such as Figure 5 (c) A glass optical component using a diffractive optical element (DOE), such as Figure 5 (d) A glass optical component having a holographic optical element (HOE), such as Figure 5 (e) The glass optical component with a passive grating, and Figure 5 (f) Glass optical component with active grating shown.

[0177] As shown in the figure, Figure 5The glass optical component using the segmented beam splitter technology shown in (a) may include a total reflection mirror 301a and a segmented beam splitter 301b. The total reflection mirror 301a is positioned in the glass optical component in the direction of incident optical image. The segmented beam splitter 301b is positioned in the glass optical component in the direction of optical image emission.

[0178] Therefore, the optical image generated by the optical device 200 is totally reflected from the total reflection mirror 301a inside the glass optical member. Then, the totally reflected optical image is partially separated and emitted by the segmented beam splitter 301b while being light-guided along the length direction of the glass, so as to be visually recognized by the user.

[0179] In such Figure 5 In the glass optical component using the sawtooth prism technology shown in (b), the image light from the optical device 200 is incident on the side surface of the glass in an oblique direction, is totally reflected inside the glass, and is emitted from the glass through a sawtooth-shaped protrusion or groove portion 302 arranged in the optical image emission direction, thereby being visually recognized by the user.

[0180] like Figure 5 The glass optical member with a diffractive optical element (DOE) shown in (c) includes a first diffractive portion 303a and a second diffractive portion 303b. The first diffractive portion is positioned on the surface in the direction in which the optical image of the glass optical member is incident. The second diffractive portion is positioned on the surface in the direction in which the optical image of the glass optical member is emitted. The first diffractive portion 303a and the second diffractive portion 303b can be arranged in a form that allows a specific pattern to be formed on the glass surface or allows a separate diffractive film to be attached to the glass surface.

[0181] Therefore, the optical image generated by the optical device 200 can be diffracted by the first diffraction part 303a when incident, and guided by light along the length direction of the glass when totally reflected. Then, the optical image is emitted through the second diffraction part 303b, so as to be visually recognized by the user.

[0182] like Figure 5 The glass optical member with a holographic optical element (HOE) shown in (d) may include an outcoupler 304. The outcoupler 304 is positioned inside the glass in the direction in which the optical image is emitted. Therefore, the optical image can enter from the optical device 200 through the side surface of the glass in an inclined direction, be totally reflected, be guided by light along the length direction of the glass, and be output by the outcoupler 304, so as to be visually recognized by the user. The structure of the holographic optical element gradually changes, and thus can be subdivided into a structure with a passive grating and a structure with an active grating.

[0183] like Figure 5(e) The glass optical member with passive grating shown may include an in-coupler 305a and an out-coupler 305b. The in-coupler 305a is positioned on the surface of the glass opposite to the surface in the direction in which the optical image is incident. The out-coupler 305b is positioned on the surface of the glass opposite to the surface in the direction in which the optical image is emitted. At this time, the in-coupler 305a and the out-coupler 305b may be provided in the form of a film with passive grating.

[0184] Therefore, the optical image incident on the glass surface in the incident direction of the glass can be totally reflected by the in-coupler 305a positioned on the opposite surface, guided by light along the length direction of the glass, and emitted by the out-coupler 305b through the opposite surface of the glass, thereby being visually recognized by the user.

[0185] like Figure 5 The glass optical component with active grating shown in (f) may include an in-coupler 306a and an out-coupler 306b. The in-coupler 306a is formed in the glass in the direction of incident optical image in the form of active grating. The out-coupler 306b is formed in the glass in the direction of optical image emission in the form of active grating.

[0186] Therefore, the optical image incident on the glass may be totally reflected by the in-coupler 306a, be light-guided along the length direction of the glass, and be emitted from the glass by the out-coupler 306b, thereby being visually recognized by the user.

[0187] As a display unit according to a modified example, an optical member using a pin mirror technique may be used.

[0188] In addition, in order to use as a coupler, e.g. Figure 6 The optical member using the surface reflection technology using the free-form combiner technology shown in (a) may have a plurality of flat surfaces, each of which has a different incident angle for the optical image, formed as a single glass pane. Therefore, a free-form combiner glass pane formed to have an overall curved surface may be used. The optical image may be incident on the free-form combiner glass 300 in a manner that the incident angle varies on a per-area basis, thereby being emitted to the user.

[0189] like Figure 6 The optical member using the surface reflection technology using the flat HOE technology shown in (b) may include a holographic optical element (HOE) 311 coated or patterned on a flat surface of the glass. The optical image incident on the optical device 200 may pass through the holographic optical element 311, be reflected from the surface of the glass, and pass through the holographic optical element 311 again, thereby being output toward the user.

[0190] like Figure 6 The optical component shown in (c) using the surface reflection technology using the free-form HOE technology may include a holographic optical element 313 coated or patterned on the surface of the free-form glass. Figure 6 (b) Same as described.

[0191] Figure 7 is a conceptual diagram showing an optical device according to the first embodiment. Figure 8 is a perspective view showing an optical device according to the first embodiment. Fig. 9 is an exploded perspective view showing the optical device according to the first embodiment. Fig.10 is along Figure 8 A cross-sectional view taken along line AA'. Fig.11 It is shown Fig.10 An enlarged cross-sectional view of portion K1. Fig.12a It is shown Fig.10 An enlarged cross-sectional view of portion K2. Figure 12b It is shown Fig.12a A sectional view of a modified example of portion K2. Fig.12c It is shown Fig.12a 2 is a sectional view of another modified example of portion K2. Fig.12d It is shown Fig.12a 2 is a sectional view of still another modified example of portion K2 of FIG.

[0192] Reference Figures 7 to 10 , the optical device 200 according to the first embodiment includes a lens barrel 210, a lens L, and a first light guide LG1. In addition, the optical device 200 may include a light source device 220 and an optical signal generating unit 230 adjacent to the lens barrel 210, and the light source device 220 is positioned in an opening portion OP formed in a side surface of the lens barrel 210 or coupled to the opening portion OP. In addition, the optical device 200 may further include a cover CV covering the lens barrel 210, the light source device 220, and the optical signal generating unit 230, and a substrate (not shown) including a connector.

[0193] A plurality of lenses L may be provided. For example, the lenses L may include a plurality of lenses sequentially arranged from the top of the lens barrel 210. For example, the lenses L may include a first lens L1 arranged at the uppermost position, a second lens L2 arranged below the first lens L1, and so on until an N-th lens Ln arranged at the lowermost position. At this time, N may be a natural number greater than or equal to 2. Among the plurality of lenses L, the N-th lens Ln may be positioned most adjacent to the optical signal generating unit 230, which is positioned below the lower end of the lens barrel 210 or below the lowermost lens among the plurality of lenses L.

[0194] In addition, in an embodiment of the present invention, the first direction (X-axis direction) may correspond to the optical axis. In addition, the first direction (X-axis direction) may correspond to the direction in which light emitted from the light source device 220 and reflected from the optical signal generating unit 230 is emitted to the above-mentioned display unit. The second direction (Y-axis direction) is a direction perpendicular to the first direction (X-axis direction). In addition, the second direction (Y-axis direction) may correspond to the direction from the first light guide LG1 toward the opening portion OP. In addition, hereinafter in this specification or in this embodiment, the second direction (Y-axis direction) may correspond to the direction from the first light guide LG1 toward the second light guide LG2. The first light guide LG1 may be referred to as a first light guide unit or a first guide member. In addition, the second light guide LG2 may be referred to as a second light guide unit or a second guide member.

[0195] The lens barrel 210 may also have a hole corresponding to the opening portion OP. As an embodiment, the lens barrel 210 may have a lens barrel hole or an additional hole 210h. The additional hole 210h may be positioned in a manner facing the opening portion OP. Alternatively, the additional hole 210h may overlap with the opening portion OP in the second direction (Y-axis direction). Alternatively, the distance from the Nth lens Ln to the additional hole 210h in the first direction may be the same as the distance between the opening portion OP and the Nth lens Ln. Alternatively, the additional hole 210h may be positioned in an area corresponding to the position of the opening portion OP on the inner surface of the lens barrel 210. With this configuration, the engaging member may be applied to the light source device 220 coupled to (inserted into, fixed to or connected to) the opening portion OP through the additional hole 210h. Therefore, the bonding force between the lens barrel 210 and the light source device 220 may be enhanced. Therefore, the optical device 200 according to the embodiment may have improved durability, durability or reliability. Alternatively, it is also possible to easily perform an optical test on the light source device 220 positioned in the opening portion OP through the additional hole 210h. Alternatively, it is possible to easily perform an optical test on the lens barrel 210 and the light source device 200: a fluid (e.g., air) is discharged or distributed through the additional hole 210h. The presence or absence of the additional hole 210h can be applied in a manner that varies according to the embodiment. For example, as described above, the additional hole 210h can be arranged in the side surface of the lens barrel 210. Alternatively, considering durability or similar factors, the additional hole 210h may not exist on the side surface of the lens barrel 210.

[0196] The plurality of lenses L may be positioned within the lens barrel 210 . Also, the first light guide LG1 may be positioned within the lens barrel 210 .

[0197] The lens barrel 210 according to the embodiment may include an opening portion OP formed in a side surface thereof. The opening portion OP may have various shapes such as a circle and a polygon. The opening portion OP may correspond to the position of the first light guide LG1.

[0198] As an embodiment, the opening portion OP may overlap the first light guide LG1 in a direction perpendicular to the optical axis. With this configuration, light emitted from the light source device 220 positioned on a side portion of the barrel 210 may be easily incident on the first light guide LG1.

[0199] The first light guide LG1 may be disposed between two lenses among the plurality of lenses. For example, the first light guide LG1 may be disposed between the first lens L1 and the N-th lens Ln. In addition, the first light guide LG1 may be disposed between the first lens L1 and the optical signal generating unit 230. In addition, the first light guide LG1 may be configured between the first lens L1 and the second lens L2, or between the second lens L2 and the N-th lens Ln. In various embodiments, these different positions of the first light guide LG1 are described below.

[0200] In the present embodiment, the first light guide LG1 may be positioned between the second lens L2 and the N-th lens Ln. Therefore, the N-th lens Ln may be disposed between the first light guide LG1 and the optical signal generating unit 230. With this configuration, light reflected from the first light guide LG1 may be provided to the optical signal generating unit 230, thereby ensuring a suitable optical path. In addition, refraction of reflected light may be achieved. Therefore, minimization of the first light guide LG1 may be achieved.

[0201] The first light guide LG1 may include a first prism. The first prism may be a polarization prism. In addition, the first prism may be a polarization separation prism.

[0202] The first light guide LG1 (or the first prism) reflects the first polarized light and transmits the second polarized light. For example, a portion of the light (the first polarized light) emitted from the light source device 220 or incident on the first light guide LG1 may be reflected from the first light guide LG1 and provided to the optical signal generating unit 230. Then, another portion of the light (the second polarized light) incident on the first light guide LG1 may pass through the first light guide LG1 and be absorbed in the lens barrel 210.

[0203] Light emitted from the light source device 220 and passing through the opening portion OP may be incident on the first light guide LG1. To this end, as described above, the opening portion OP may be arranged in the region where the first light guide LG1 is located. For example, the incident surface of the first light guide LG1 may be positioned in a manner facing the opening portion OP. Alternatively, the position of the first light guide LG1 in the lens barrel 210 may correspond to the opening portion OP or the light source device. The light source device 220 may include a light source 223 and thus generate (produce or provide) or emit light. The light source device 220 according to an embodiment may be positioned in the opening portion OP or coupled to the opening portion OP. That is, the light source device 220 may be connected or coupled to the lens barrel 210.

[0204] The light source device 220 may include a housing 222 having an opening 222 h , a second light guide LG2 disposed within the housing 222 , and a light source 223 providing light to the second light guide LG2 .

[0205] In addition, the light source device 220 may include: a light source assembly 221 arranged at the outermost position within the light source device 220 and surrounding the housing 222, a light source lens 224 adjacent to the light source 223, and an intermediate lens MO positioned within the housing 222.

[0206] The light source assembly 221 may be arranged farthest from the light source device 220. In the case where the light source 223 is difficult to be installed in the housing 222 or an additional lens (light source lens) needs to be installed, the light source assembly 221 may be positioned outside the housing 222. The light source assembly 221 may have a structure integrally formed with the housing 222 or separated from the housing 222.

[0207] The housing 222 may have an opening 222h. The housing 222 may be positioned adjacent to the opening portion OP in the lens barrel 210. For example, the opening 222h in the housing 222 may be positioned in a manner corresponding to the opening portion OP in the lens barrel 210. Therefore, the opening 222h in the housing 222 may overlap with the opening portion OP in the lens barrel 210 in the second direction (Y-axis direction).

[0208] The light source 223 may be positioned within the housing 222 or the light source assembly 221. The light source 223 may emit light. For example, light from the light source 223 may be incident on the second light guide LG2 within the housing 222. The second light guide LG2 may be positioned within the housing 222. Thus, the second light guide LG2 may transmit the light emitted from the light source 223 to the opening 222h or the first light guide LG1.

[0209] One or more light sources 223 may be provided. A single light source 223 or a plurality of light sources 223 may be provided in the light source device 220. For example, the plurality of light sources 223 may include a first light source 223a, a second light source 223b, and a third light source 223c. The first light source 223a to the third light source 223c may emit light in the same direction or in different directions. For example, the first light source 223a and the third light source 223c may be positioned to face each other. The first light source 223a and the third light source 223c may be positioned to overlap each other in the first direction (X-axis direction). The second light guide LG2 may be positioned between the first light source 223a and the third light source 223c. Therefore, the second light guide LG2 may overlap with the first light source 223a and the third light source 223c. The second light source 223b may be positioned between the first light source 223a and the third light source 223c. The first light source 223a to the third light source 223c may emit light toward the second light guide LG2. The second light source 223b may overlap with the second light guide LG2 in the second direction. With this configuration, the optical device 200 can have a compact light source device 220 .

[0210] In addition, one or more of the first light source 223a, the second light source 223b and the third light source 223c can emit light having the same wavelength or color or having different wavelengths or colors. For example, the first light source 223a, the second light source 223b and the third light source 223c can emit red light, green light and blue light, respectively.

[0211] The second light guide LG2 may include a second prism. The second prism may include, for example, an X-prism as a reflective member. As an embodiment, the second light guide LG2 or the second prism may have a structure in which at least two prisms are coupled to each other.

[0212] The second prism may have at least two coated surfaces (reflection members or reflective sheets). One of the at least two coated surfaces may reflect light having a first wavelength and light having a second wavelength and transmit light having a third wavelength. That is, the coated surface may reflect light having a predetermined wavelength band. Therefore, the light emitted from the plurality of light sources 223 may have a desired wavelength band and be reflected from the second light guide LG2. For example, the light passing through the second light guide LG2 may be provided to the first light guide LG1 or the intermediate lens MO.

[0213] The light source lens 224 may be positioned adjacent to the light source 223. For example, a plurality of light source lenses 224 may be provided. The light source lens 224 may be positioned on a path of light emitted from each light source 223.

[0214] As an embodiment, the light source lens 224 may be positioned between the second light guide LG2 and the light source 223. In addition, a plurality of light source lenses 224 may be provided. A plurality of light source lenses 224 may be positioned between the second light guide LG2 and the light source 223. Alternatively, a plurality of light source lenses 224 may be provided in a manner corresponding to the plurality of light sources 223, respectively.

[0215] For example, the light source lens 224 may include a first light source lens 224a, a second light source lens 224b, and a third light source lens 224c. The first light source lens 224a may be positioned between the first light source 223a and the second light guide LG2. The second light source lens 224b may be positioned between the second light source 223b and the second light guide LG2. The third light source lens 224c may be positioned between the third light source 223c and the second light guide LG2.

[0216] In addition, a plurality of first light source lenses 224a, a plurality of second light source lenses 224b, and a plurality of third light source lenses 224c may be positioned on the first light source 223a, the second light source 223b, and the third light source 223c, respectively. For example, any one of the plurality of first light source lenses 224a may be positioned on the first light source 223a and coupled to the light source assembly 221. Another one of the plurality of first light source lenses 224a may be positioned between the previously positioned and coupled first light source lens 224a and the second light guide LG2 and coupled to the housing 222.

[0217] The first light source lens 224 a , the second light source lens 224 b , and the third light source lens 224 c may include a collimating lens and a collimator.

[0218] In addition, a substrate 225 connected to the light source 223 may be arranged in the light source assembly 221. At least one substrate 225 may be provided in a manner corresponding to the light source 223. For example, the plurality of substrates 225 may include a first substrate 225a, a second substrate 225b, and a third substrate 225c. As described above, the plurality of substrates 225 may form a single integrated substrate or correspond to the number of light sources.

[0219] In addition, the substrate 225 can be electrically connected to a control unit or processor in the above-mentioned frame (or display unit). To this end, the substrate 225 may include a connector for communicating with an external device or a connected device. In addition, the substrate 225 can be arranged outside the light source 223 and the heat generated in the light source is dissipated to the outside. Therefore, the reliability of the light source device 220 can be improved.

[0220] The intermediate lens MO may be positioned between the opening 222h and the second light guide LG2. In addition, the intermediate lens MO may be positioned between the first light guide LG1 and the second light guide LG2.

[0221] The intermediate lens MO may include a plurality of lenses. For example, the intermediate lens MO may include a first intermediate lens MO1 and a second intermediate lens MO2. However, as described below, without the intermediate lens MO, light reflected from the second light guide LG2 may also be directly provided to the first light guide LG1.

[0222] The first intermediate lens MO1 may have a first surface MO1s1 adjacent to the first light guide LG1 and a second surface MO1s2 corresponding to the first surface MO1s1. Light emitted from the light source 223 may pass through the second light guide LG2 and then sequentially pass through the first surface MO1s1 and the second surface MO1s2.

[0223] The second surface MO1s2 may protrude toward the second light guide LG2. Alternatively, the second surface MO1s2 may be recessed toward the first light guide LG1. In addition, the first surface MO1s1 may protrude or recessed toward the second light guide LG2. For example, the first intermediate lens MO1 may have a meniscus shape. Since the second surface MO1s2 protrudes toward the second light guide LG2 in this manner, light may converge while passing through the intermediate lens MO. Therefore, the regularity or uniformity of the light provided to the optical signal generating unit 230 may be improved. In other words, the light incident on the optical signal generating unit 230 may be surface light. Then, the uniformity of the surface light may be improved. Therefore, by the optical device 200 according to the embodiment, the accuracy or resolution of the image signal or image may be improved.

[0224] The second middle lens MO2 may include a micro lens array (MLA). Therefore, surface illumination may be partially performed on the light passing through the second light guide LG2.

[0225] Furthermore, the second intermediate lens MO2 may have a different size than the second light guide LG2. Furthermore, the first intermediate lens MO1 may have a different size than the second light guide LG2. For example, the intermediate lens MO2 is larger in size than the second light guide LG2.

[0226] In addition, the positions of the plurality of lenses L, the positions of the plurality of intermediate lenses 240, and the positions of the plurality of light source lenses 224 may be maintained by spacers SP. For example, a plurality of spacers SP adjacent to the plurality of lenses L may exist within the lens barrel 210. In addition, a plurality of spacers SP adjacent to the intermediate lenses 240 and the light source lenses 224 may be arranged in the housing 222 or the light source assembly 221 of the light source device 220. As an embodiment, a plurality of spacers SP may be arranged on top of or below the above-mentioned lenses, and thus fix or maintain the positions of the lenses.

[0227] The optical signal generating unit 230 may be positioned below the lower end of the lens barrel 210. The optical signal generating unit 230 may overlap the lens L on the optical axis or in the first direction (X-axis direction).

[0228] The optical signal generating unit 230 may convert light that is incident on the first light guide LG1 , is reflected, and then passes through the Nth lens into an optical signal including image information.

[0229] The optical signal generating unit 230 may reflect the light (first polarized light) reflected from the first light guide LG1. The optical signal generating unit 230 may generate an optical signal including image information. That is, the light emitted from the optical signal generating unit 230 may be light including image information.

[0230] The optical signal generating unit 230 may include a liquid crystal on silicon (LCoS) device.

[0231] The LCOS device may have a structure in which liquid crystal is distributed between a silicon wafer (a thin circular substrate material for semiconductors) having a complementary metal oxide semiconductor (CMOS) array and an anti-reflection (AR) member coated with a transparent electrode (indium tin oxide (ITO)).

[0232] An alignment layer may be formed on top of a wafer (silicon wafer), and thus an initial liquid crystal alignment is formed.

[0233] In addition, a reflective layer or a reflective electrode formed as an aluminum layer and having high optical reflectivity can be positioned below the alignment layer. The reflective electrode can be positioned on top of the silicon wafer. A semiconductor array (CMOS array) can be formed on the silicon wafer. Data signals can be transmitted to the semiconductor array through the panel.

[0234] Depending on the driving, the optical signal generating unit 230 may reflect at least a portion of the incident light. The optical signal generating unit 230 may reflect light incident as a surface light source on a per-pixel basis. In addition, the intensity of the reflected light may also be adjusted according to the degree of modulation. For example, the optical signal generating unit 230 may modulate a portion of the first polarized light into the second polarized light. Thus, the light modulated into the second polarized light may pass through the first light guide LG1 and the first lens L1, and then be provided to the display unit.

[0235] That is, the optical signal generating unit 230 can modulate the delay of the modulated light (ie, polarized light). The optical signal generating unit 230 can perform the delay of the first polarized light in various ways. That is, the electric field can be formed by adjusting the voltage of each pixel (the voltage of the electrode). The degree of liquid crystal distortion can also be adjusted according to the adjusted voltage. For example, when the maximum voltage is applied, all the light reflected from the optical signal generating unit 230 can be reflected from the first light guide LG1. When the minimum voltage is applied, all the light reflected from the optical signal generating unit 230 can pass through the second light guide LG1. However, the operation can also be performed in the opposite manner according to the electric field. In addition, when a medium level of voltage is applied, a portion of the light can pass through the first light guide LG1. That is, the intensity (e.g., brightness) of the light provided to the display unit can be at a medium level. Alternatively, the operation can also be performed in the opposite manner.

[0236] In this manner, the optical signal generated by the optical signal generating unit 230 may be transmitted to the first lens L1 through the Nth lens Ln and the first light guide LG1. In addition, at least a portion of the optical signal generated by the optical signal generating unit 230 may pass through the first lens L1 and be incident on the display unit.

[0237] In addition, a transparent member 240 may be arranged between the optical signal generating unit 230 and the N-th lens Ln (or the first light guide). The transparent member 240 may be a glass plate. The transparent member 240 may be coupled to the lens barrel 210 or the cover CV. In addition, the transparent member 240 may be positioned above the optical signal generating unit 230. Therefore, foreign matter may be easily prevented from being introduced into the optical signal generating unit 230. The transparent member 240 may have the same size as the optical signal generating unit 230 or a different size. In addition, the transparent member 240 may overlap with at least a portion of the optical signal generating unit 230 in the optical axis or the first direction (X-axis direction).

[0238] Also refer to Fig.11 a, the light La, the light Lb, and the light Lc respectively emitted from the light source 223 of the light source device 220 may pass through the light source lens 224, the second light guide LG2, and the intermediate lens MO. For example, the first light La, the second light Lb, and the third light Lc respectively emitted from the first light source 223a to the third light source 223b may be emitted from the second light guide LG2 in the same direction.

[0239] For example, the second light guide LG2 may have a first coated surface LG2a and a second coated surface LG2b. As described above, one of the at least two coated surfaces may reflect one or two of the following: light having a first wavelength, light having a second wavelength, or light having a third wavelength. For example, the first wavelength includes a wavelength band of red light. The second wavelength includes a wavelength band of green light. The third wavelength includes a wavelength band of blue light.

[0240] In addition, the first coated surface LG2a can reflect the first light La or the light having the first wavelength. That is, the first coated surface LG2a can transmit the second light Lb and the third light Lc. In other words, the first coated surface LG2a can transmit the light having the second wavelength and the light having the third wavelength.

[0241] The second coated surface LG2b may reflect the second light Lb or the light having the second wavelength. That is, the second coated surface LG2b may transmit the first light La and the third light Lc. In other words, the second coated surface Lg2b may transmit the light having the first wavelength and the light having the third wavelength.

[0242] Therefore, the first light La can be reflected from the second light guide LG2 to or incident on the intermediate lens MO or the opening portion OP. The second light Lb can be reflected from the second light guide LG2 to or incident on the intermediate lens MO or the opening portion OP. In addition, the third light Lc can be reflected from the second light guide LG2 to or incident on the intermediate lens MO or the opening portion OP.

[0243] Therefore, the light IL (or La, Lb, and Lc) emitted from the light source 223 may be incident on the first light guide LG. At this time, the light incident on the first light guide LG may be the first incident light IL.

[0244] Also refer to Fig.12a , a portion of the first incident light IL may be reflected from the first light guide LG1, and a portion of the first incident light IL may pass through the first light guide LG1. That is, the first light guide LG1 may reflect the first polarized light ILa of the first incident light IL and transmit the second polarized light ILb. For example, the first polarized light ILa and the second polarized light ILb may each be a different type of S / P light. Therefore, the first polarized light ILa as a portion of the first incident light IL may be provided to the optical signal generating unit 230 through the Nth lens Ln. The second polarized light ILb may be absorbed into the lens barrel 210 or provided to the additional hole 210h.

[0245] Also refer to Figure 12b As described above, the optical signal generating unit 230 can reflect the first polarized light IIa by adjusting the voltage. In an embodiment, the first polarized light ILa reflected from the optical signal generating unit 230 is described below as reflected polarized light.

[0246] In this manner, the first light guide LG1 may reflect at least a portion of the light IL emitted from the light source 223 and incident on the first light guide to the Nth lens (or the optical signal generating unit). That is, at least a portion of the reflected polarized light may be reflected from the first light guide LG1. However, as described above, all of the reflected polarized light may be reflected from the first light guide LG1 or pass through the first light guide LG1 according to the voltage applied by the optical signal generating unit 230. Below, the reflected polarized light is described on the premise that at least a portion of the reflected polarized light passes through the first light guide LG1.

[0247] The reflected polarized light may include first reflected polarized light ILaa passing through the first light guide LG1 and second reflected polarized light ILab reflected from the first light guide LG1. As described above, the intensity of the first reflected polarized light ILaa (i.e., the degree of reflected polarized light passing through the first light guide LG1) may be adjusted in a manner corresponding to an image provided to the display unit.

[0248] In addition, the optical device 200 according to the embodiment may further include a display unit, which is arranged in front of the first lens L1 and displays the optical signal including the image information transmitted to the first lens L1 as an image on the display unit. In other words, the optical device 200 may have a structure integrally formed with the above-mentioned display unit. However, the optical device 200 is described below on the premise that the optical device 200 has a structure separated from the display unit.

[0249] In addition, as a modification example, Figure 12b As shown, the lens barrel 210 may also have an additional hole 210h in the side surface. For example, the second polarized light may be provided to the additional hole 210h. The description of the first embodiment may be applied to the modified example in the same manner.

[0250] Reference Fig.12c According to another modified example, the distances between the plurality of lenses in the lens barrel 210 and the first light guide LG1 may be different. The contents described in each embodiment in this specification may be applied except for the following contents.

[0251] In this example, the second lens L2 may be disposed between the first lens L1 and the N-th lens Ln among the plurality of lenses L. The second lens L2 may be disposed between the first light guide LG1 and the N-th lens Ln.

[0252] At least a portion of the optical signal generated by the optical signal generating unit 230 may pass through the second lens L2 before passing through or being reflected from the first light guide LG1. For example, at least a portion of the reflected polarized light may first pass through the second lens L2 before the first light guide LG1.

[0253] Also refer to Fig.12dAccording to yet another modified example, unlike the optical device in the first embodiment, the distance between the plurality of lenses in the lens barrel 210 and the first light guide LG1 may be different. The contents described in each embodiment in this specification may be applied except for the following contents.

[0254] Furthermore, in the optical device according to still another modified example, there may be no intermediate lens MO between the first light guide LG1 and the second light guide LG2. Therefore, it is possible to prevent a decrease in optical efficiency due to absorption of a portion of light.

[0255] In addition, at least one of the first intermediate lens and the second intermediate lens may not exist. For example, only the second intermediate lens (or the first intermediate lens) may exist between the first light guide LG1 and the second light guide LG2.

[0256] Fig.13a is a conceptual diagram showing an optical device according to a second embodiment. Fig.13b It is shown Fig.13a A view of a modified example of the optical device in FIG. Fig.13c It is shown Fig.13a A view of another modified example of the optical device in FIG.

[0257] Reference Fig.13a , the optical device 200 according to the second embodiment may include a third light guide LG3 disposed between the first light guide LG1 and the second light guide LG2. The contents described in each embodiment in this specification may be applied except for the contents described below in this embodiment.

[0258] In addition, the optical device 200 may include an intermediate housing 222' disposed between the housing 222 and the lens barrel 210. For example, the intermediate housing 222' may be connected to the opening portion OP in the lens barrel 210. That is, the intermediate housing 222' may be positioned in a manner corresponding to the opening portion in the lens barrel 210.

[0259] The third light guide LG3 may be positioned in the intermediate housing 222'. The third light guide LG3 may include a third prism. The third light guide LG3 may change a path of light emitted from the second light guide LG2. For example, the housing 222 may be integrally formed with the intermediate housing 222'.

[0260] In addition, the housing 222 may be arranged in parallel with the lens barrel 210 through the third light guide LG3. For example, the light emitted from the second light guide LG2 may propagate parallel to the optical axis or the first direction. Similarly, the light or optical signal reflected from or appearing in the optical signal generating unit 230 may also propagate along the optical axis.

[0261] Therefore, the optical device 200 can be miniaturized in a manner corresponding to the structure (eg, frame) of the electronic device. In other words, the length or thickness in one direction of the optical device 200 can be easily adjusted.

[0262] In this example, the third light guide LG3 may overlap the second light guide LG2 in the first direction (X-axis direction). Then, the third light guide LG3 may overlap the opening portion OP in the second direction (Y-axis direction). In addition, the third light guide LG3 may overlap the first light guide LG1 in the second direction (Y-axis direction).

[0263] The opening in the housing 222 may be connected to the intermediate housing 222'. The intermediate housing 222' may have two holes (for an inlet and an outlet) to ensure a light path.

[0264] Reference Fig.13b , the optical device 200 according to the modified example may include a third light guide LG3 disposed between the first light guide LG1 and the second light guide LG2. The contents described in each embodiment in this specification may be applied except for the contents described below in this embodiment.

[0265] In this example, as shown in the figure, the lens barrel 210 may further have an additional hole 210h in the side surface. For example, the second polarized light may be provided to the additional hole 210h.

[0266] Reference Fig.13c , the optical device 200 according to another modified example may include a third light guide LG3 disposed between the first light guide LG1 and the second light guide LG2. The contents described in each embodiment in this specification may be applied except for the contents described below in this embodiment.

[0267] In addition, if Fig.13b As shown, the lens barrel 210 may also have an additional hole 210h in the side surface. For example, the second polarized light may be provided to the additional hole 210h. However, the additional hole 210h may not exist in the lens barrel 210.

[0268] In addition, the housing 222 may be arranged in parallel with the lens barrel 210 through the third light guide LG3. For example, the light emitted from the second light guide LG2 may propagate in parallel to the optical axis or the first direction. At this time, the light emitted from the second light guide LG2 may be emitted in the opposite direction to the first direction. Similarly, the light or optical signal reflected from or appearing in the optical signal generating unit 230 may also propagate along the optical axis.

[0269] Therefore, the optical device 200 can be miniaturized in a manner corresponding to the structure (eg, frame) of the electronic device. In other words, the length or thickness in one direction of the optical device 200 can be easily adjusted.

[0270] In this example, the third light guide LG3 may overlap the second light guide LG2 in the first direction (X-axis direction). Then, the third light guide LG3 may overlap the opening portion OP in the second direction (Y-axis direction). In addition, the third light guide LG3 may overlap the first light guide LG1 in the second direction (Y-axis direction).

[0271] The intermediate housing 222' may have an opening at the top. Therefore, the housing 222 may be positioned adjacent to the first lens L1. For example, the housing 222 may be positioned closer to the first lens than the Nth lens. For example, the first lens L1 may overlap with the housing 222 in the second direction (Y-axis direction).

[0272] Fig.14a is a conceptual diagram showing an optical device according to a third embodiment. Fig.14b It is shown Fig.14a A view of a modified example of the optical device in FIG. Fig.14c It is shown Fig.14a A view of another modified example of the optical device in FIG.

[0273] Reference Fig.14a , the optical device 200 according to the third embodiment may include only the first light guide LG1. The second light guide and the third light guide do not exist in the above light source device 220. The contents described in each embodiment in this specification may be applied except for the contents described below in this embodiment.

[0274] Furthermore, the light source 223 may be provided as a single light source. Furthermore, an intermediate lens MO may be positioned between the light source 223 and the first light guide LG1.

[0275] In the present embodiment, only one light beam may be provided to the display unit by one light source 223. For example, in the case of providing only information to the user, the light source device may have only one light source.

[0276] In addition, the light source lens 224 may be disposed on the top of the light source 223. Therefore, the light source lens 224 may be positioned between the light source 223 and the intermediate lens MO. In addition, the light source lens 224 may be positioned between the light source 223 and the first light guide LG1. In addition, the first light guide LG1, the intermediate lens MO, the light source lens 224, and the light source 223 may overlap each other in the second direction (Y-axis direction).

[0277] Reference Fig.14b, the optical device 200 according to the modified example may include only the first light guide LG1. The second light guide and the third light guide do not exist in the above-mentioned light source device 220. The contents described in each embodiment in this specification may be applied except for the contents described below in this embodiment.

[0278] The light source 223 may emit two light beams. For example, the two light beams may be two of the following: red light, green light, or blue light. Alternatively, the light beams may also include white light.

[0279] Furthermore, the intermediate lens MO may be disposed in the housing 222 of the light source device 220. The intermediate lens MO may be positioned between the light source 223 and the first light guide LG1.

[0280] In addition, the light source lens 224 may be disposed on the top of the light source 223. Therefore, the light source lens 224 may be positioned between the light source 223 and the intermediate lens MO. In addition, the light source lens 224 may be positioned between the light source 223 and the first light guide LG1. In addition, the first light guide LG1, the intermediate lens MO, the light source lens 224, and the light source 223 may overlap each other in the second direction (Y-axis direction).

[0281] Two light source lenses 224 can be positioned on top of two light sources 223, one on each light source. In addition, one light source lens 224 can be positioned on top of two light sources 223.

[0282] 14c, an optical device 200 according to another modified example may include only the first light guide LG1. The second light guide and the third light guide do not exist in the above light source device 220. The contents described in each embodiment in this specification may be applied except for the contents described below in this embodiment.

[0283] The light source 223 may emit two light beams. For example, the two light beams may be two of the following: red light, green light, or blue light. Alternatively, the light beams may also include white light.

[0284] In addition, the intermediate lens 240 may not be arranged in the housing 222 of the light source device 220. The light source lens 224 may be arranged on top of the light source 223. Therefore, the light source lens 224 may be arranged between the light source 223 and the first light guide LG1. In addition, the first light guide LG1, the light source lens 224, and the light source 223 may overlap each other in the second direction (Y-axis direction).

[0285] Additionally, two light source lenses 224 can be positioned on top of the two light sources 223, one on each light source. Additionally, one light source lens 224 can be positioned on top of the two light sources 223.

[0286] Fig.15a is a conceptual diagram showing an optical device according to a fourth embodiment. Fig.15b It is shown Fig.15a A view of a modified example of the optical device in FIG. Fig.15c It is shown Fig.15a A view of another modified example of the optical device in FIG.

[0287] Reference Fig.15a , the optical device 200 according to the fourth embodiment may include only the first light guide LG1. In addition, there may be no light source lens on the top of the light source 223. In addition, there are no second light guide and third light guide in the light source device 220. In addition to the contents described below in this embodiment, the contents described in each embodiment in this specification may be applied.

[0288] Furthermore, the light source 223 may be provided as a single light source. Furthermore, an intermediate lens MO may be positioned between the light source 223 and the first light guide LG1.

[0289] In the present embodiment, only one light beam may be provided to the display unit by one light source 223. For example, in the case of providing only information to the user, the light source device may have only one light source.

[0290] In addition, the intermediate lens MO may be positioned between the light source 223 and the first light guide LG1. In addition, the first light guide LG1, the intermediate lens MO, and the light source 223 may overlap each other in the second direction (Y-axis direction).

[0291] 15b, the optical device 200 according to the modified example may include only the first light guide LG1. The second light guide and the third light guide do not exist in the above light source device 220. The contents described in each embodiment in this specification may be applied except for the contents described below in this embodiment.

[0292] The light source 223 may emit two light beams. For example, the two light beams may be two of the following: red light, green light, or blue light. Alternatively, the light beams may also include white light.

[0293] Furthermore, the intermediate lens MO may be disposed in the housing 222 of the light source device 220. The intermediate lens MO may be positioned between the light source 223 and the first light guide LG1.

[0294] In addition, the first light guide LG1, the intermediate lens MO, and the light source 223 may overlap the second direction (Y-axis direction).

[0295] 15c, an optical device 200 according to another modified example may include only the first light guide LG1. The second light guide and the third light guide do not exist in the above light source device 220. The contents described in each embodiment in this specification may be applied except for the contents described below in this embodiment.

[0296] The light source 223 may emit two light beams. For example, the two light beams may be two of the following: red light, green light, or blue light. Alternatively, the light beams may also include white light.

[0297] In addition, the intermediate lens 240 may not be disposed in the housing 222 of the light source device 220. The light source lens 224 may be disposed on the top of the light source 223. Light emitted from the light source 223 may be directly incident on the first light guide LG1.

[0298] In addition, the first light guide LG1 and the light source 223 may overlap each other in the second direction (Y-axis direction).

[0299] Furthermore, it should be understood that Figures 13a to 13c , Figures 14a to 14c and Figures 15a to 15c The lens barrel 210 in FIG. 2 may further include an additional hole 210 h positioned adjacent to the first light guide LG1 .

Claims

1. An optical device, comprising: Multiple lenses; a lens barrel, wherein the plurality of lenses are arranged in the lens barrel; a first light guide disposed in the lens barrel; as well as an opening portion formed in a side surface of the lens barrel, wherein the first light guide is arranged between two lenses of the plurality of lenses, and The opening portion overlaps with the first light guide in a direction perpendicular to the optical axis.

2. The optical device according to claim 1, comprising: a light source device coupled to the opening portion, Wherein, the light source device comprises: a housing having an opening formed therein; a second light guide disposed in the housing; and A light source emits light toward the second light guide.

3. The optical device according to claim 2, comprising: An intermediate lens is arranged between the opening and the second light guide.

4. The optical device according to claim 2, comprising: a light signal generating unit, the light signal generating unit generating a light signal including image information, wherein the plurality of lenses include a first lens arranged at a position farthest from the optical signal generating unit and an Nth lens closest to the optical signal generating unit, and Wherein, the first light guide is positioned between the first lens and the Nth lens.

5. The optical device according to any one of claims 2 to 4, wherein: The first light guide includes a first prism and the second light guide includes a second prism.

6. The optical device according to claim 5, wherein: The first prism includes a polarization separation member that reflects a first polarized light and transmits a second polarized light, and the second prism is obtained by coupling at least two prisms.

7. The optical device according to claim 5, wherein: The second prism has at least two coated surfaces, and one of the at least two coated surfaces reflects light having a first wavelength and light having a second wavelength and transmits light having a third wavelength.

8. An optical device according to any one of claims 2 to 4, comprising: A third light guide is arranged between the first light guide and the second light guide.

9. The optical device according to claim 8, wherein: The third light guide includes a third prism.

10. The optical device according to claim 1, wherein: The plurality of lenses are arranged in the lens barrel, and the plurality of lenses include a first lens arranged at an uppermost position and an Nth lens arranged at a lowermost position.

Images