Projector device and electronic device comprising same

Abstract

Disclosed in an embodiment is a projector device comprising: a light source unit for emitting light; a projection lens unit for transmitting the light emitted from the light source unit; and an optical modulator for modulating and reflecting the light passing through the projection lens unit, wherein the projection lens unit includes a plurality of lenses, the optical modulator includes a substrate and a plurality of mirrors disposed on the substrate, the plurality of lenses of the projection lens unit includes at least three lenses aligned in the optical axis direction, the substrate is tilted with respect to a surface perpendicular to the optical axis direction, and the surface adjacent to the optical modulator, of the lens adjacent to the optical modulator from among the plurality of lenses of the projection lens unit, is convex toward the optical modulator.

Description

Project device and electronic device including same

[0001] The present invention relates to a project device and an electronic device including the same.

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

[0003] Augmented Reality (AR) is a technology that synthesizes virtual objects or information into the real environment to make them appear as objects that exist in the original environment.

[0004] Mixed reality (MR) or hybrid reality refers to the creation of new environments or information by merging the virtual and real worlds. In particular, it refers to real-time interaction between real and virtual worlds.

[0005] At this time, the created virtual environments and situations stimulate the user's five senses, allowing them to experience spatial and temporal experiences similar to reality, freely moving between reality and imagination. Furthermore, users can not only immerse themselves in these environments, but also interact with the objects embodied within them, using real devices to control and command them.

[0006] Recently, active research has been conducted on the gear and devices used in these fields. However, the need for miniaturization and improved optical performance of these devices is emerging.

[0007] The embodiment provides a projector device and an electronic device that are miniaturized and compact by adjusting the positions of a light source, a mirror, a lens, a prism, a light modulator, and a projector device used in AR (Augmented Reality) and an electronic device including the same.

[0008] In addition, a projector device and electronic device with improved optical performance and easy alignment of the optical system are provided.

[0009] The problem to be solved in the embodiment is not limited to this, and it can be said that the purpose or effect that can be understood from the solution or embodiment of the problem described below is also included.

[0010] A projector device according to an embodiment includes a light source unit that emits light; a projection lens unit that transmits the light emitted from the light source unit; and a light modulator that modulates and reflects the light passing through the projection lens unit, wherein the projection lens unit includes a plurality of lenses, the light modulator includes a substrate and a plurality of mirrors arranged on the substrate, the plurality of lenses of the projection lens unit include at least three lenses aligned in an optical axis direction, the substrate is tilted based on a plane perpendicular to the optical axis direction, and a surface of a lens adjacent to the optical modulator among the plurality of lenses of the projection lens unit may be convex toward the optical modulator.

[0011] The above plurality of lenses may include first to seventh lenses sequentially arranged from the light source side to the light modulator side.

[0012] The sixth lens may include a first outer surface adjacent to the light source and a second outer surface spaced apart from the light source, and the seventh lens may include a third outer surface adjacent to the light source and a fourth outer surface spaced apart from the light source.

[0013] The first and fourth outer surfaces do not have circular symmetry with respect to the optical axis, and the third outer surface and the fourth outer surface can be tilted with respect to a plane perpendicular to the direction of the optical axis.

[0014] The center of the first outer surface and the center of the fourth outer surface may not be on the optical axis, and the center of the second outer surface and the center of the third outer surface may be on the optical axis.

[0015] The projection lens unit includes an optical axis passing through the centers of the first lens to the third lens, and the center of the first outer surface and the center of the fourth outer surface can be spaced apart from the optical axis by a certain distance in a direction perpendicular to the optical axis.

[0016] A projector device according to an embodiment includes an optical axis passing through the centers of the first lens to the third lens of the projection lens unit, and a center of the first outer surface, a center of the third outer surface, and a center of the fourth outer surface are spaced apart from the optical axis by a predetermined distance in a direction perpendicular to the optical axis, and the third outer surface and the fourth outer surface can be tilted based on a plane perpendicular to the direction of the optical axis.

[0017] The difference between the angle at which the fourth outer surface is tilted relative to a plane perpendicular to the optical axis direction and the angle at which the substrate is tilted relative to a plane perpendicular to the optical axis direction may be -5˚ to +5˚.

[0018] The tilt angle of the substrate relative to a plane perpendicular to the optical axis direction may be 6.5° to 7°.

[0019] The angle formed by the mirror with respect to the substrate may be 16.5° to 17.5°.

[0020] The surface of the first lens adjacent to the light source unit may be convex toward the light source unit.

[0021] The above light source unit may be placed in a first area on one side based on the optical axis of the first lens.

[0022] Light reflected by the above optical modulator and passing through the projection lens unit is emitted to a second region, and the second region may be a region that is on a different side from the first region based on the optical axis of the first lens and does not overlap with the first region in the direction of the optical axis.

[0023] The substrate can be tilted so that the surface on which the light is reflected faces the second region.

[0024] The third outer surface may be tilted toward the first region based on a plane perpendicular to the optical axis direction, and a width in the optical axis direction of the seventh lens located in the first region may be smaller than a width in the optical axis direction of the seventh lens located in the second region.

[0025] A projector device according to an embodiment includes a light source unit that emits light; a projection lens unit that transmits the light emitted from the light source unit; and a light modulator that modulates and reflects the light passing through the projection lens unit, wherein the projection lens unit includes first to sixth lenses that are sequentially arranged from the light source unit side toward the light modulator side, and a surface of the sixth lens adjacent to the light modulator may be convex toward the light modulator side.

[0026] A projector device according to an embodiment includes an optical axis passing through the centers of the first lens to the third lens of the projection lens unit, and a first axis passing through the center of a surface of the fifth lens spaced apart from the optical modulator and parallel to the optical axis may be spaced apart from the optical axis by 1.0 mm to 1.2 mm in a direction perpendicular to the optical axis.

[0027] The surface of the sixth lens spaced apart from the optical modulator and the surface of the sixth lens adjacent to the optical modulator can be tilted in opposite directions with respect to a surface perpendicular to the optical axis direction.

[0028] The surface of the sixth lens spaced apart from the optical modulator can be tilted by 9.0° to 9.6° with respect to the surface perpendicular to the optical axis direction, and the surface of the sixth lens adjacent to the optical modulator can be tilted by 10.5° to 11.1° with respect to the surface perpendicular to the optical axis direction.

[0029] According to an embodiment, when using a projector device used for AR (Augmented Reality) and an electronic device including the same, a projector device and an electronic device that are miniaturized and compact can be provided by adjusting the positions of a light source, a mirror, a lens, a prism, a light modulator, and a projector device.

[0030] In addition, it is possible to provide a projector and electronic device with improved optical performance and easy alignment of the optical system.

[0031] The various advantageous and beneficial effects of the present invention are not limited to the above-described contents, and will be more easily understood in the course of explaining specific embodiments of the present invention.

[0032] Figure 1 is a conceptual diagram showing an embodiment of an AI device,

[0033] FIG. 2 is a block diagram showing the configuration of an extended reality electronic device according to an embodiment of the present invention.

[0034] Figure 3 is a perspective view of an augmented reality electronic device according to an embodiment of the present invention;

[0035] Figures 4 to 6 are conceptual diagrams for explaining various display methods applicable to the display unit according to an embodiment of the present invention.

[0036] Fig. 7 is a perspective view of a project device according to an embodiment;

[0037] Fig. 8 is another perspective view of a project device according to an embodiment;

[0038] Figures 9 and 10 are schematic diagrams of the inside of a project device according to an embodiment;

[0039] Fig. 11 is a schematic diagram of the inside of a project device according to another embodiment;

[0040] Fig. 12 is an enlarged view of the optical modulator of the project device according to the embodiment;

[0041] Figures 13 to 16 are schematic diagrams of the inside of a project device according to another embodiment.

[0042] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0043] However, the technical idea of ​​the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of ​​the present invention, one or more of the components between the embodiments can be selectively combined or substituted for use.

[0044] In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which the present invention belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, may be interpreted in consideration of the contextual meaning of the relevant technology.

[0045] Additionally, the terms used in the embodiments of the present invention are intended to describe the embodiments and are not intended to limit the present invention.

[0046] In this specification, the singular may also include the plural unless specifically stated otherwise in the phrase, and when it is described as “A and / or at least one (or more) of B, C”, it may include one or more of all combinations that can be combined with A, B, C.

[0047] Additionally, in describing components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used.

[0048] These terms are intended only to distinguish one component from another, and are not intended to limit the nature, order, or sequence of the component.

[0049] And, when a component is described as being 'connected', 'coupled' or 'connected' to another component, it may include not only cases where the component is directly connected, coupled or connected to the other component, but also cases where the component is 'connected', 'coupled' or 'connected' by another component between the component and the other component.

[0050] Additionally, when described as being formed or arranged "above or below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when expressed as "above" or "below", it can include the meaning of a downward direction as well as an upward direction based on one component.

[0051] Figure 1 is a conceptual diagram illustrating an embodiment of an AI device.

[0052] Referring to FIG. 1, an AI system is connected to a cloud network (10) by at least one of an AI server (16), a robot (11), an autonomous vehicle (12), an XR device (13), a smartphone (14), or an appliance (15). Here, a robot (11), an autonomous vehicle (12), an XR device (13), a smartphone (14), or an appliance (15) to which AI technology is applied may be referred to as an AI device (11 to 15).

[0053] A cloud network (10) may refer to a network that constitutes part of a cloud computing infrastructure or exists within a cloud computing infrastructure. Here, the cloud network (10) may be configured using a 3G network, a 4G or LTE (Long Term Evolution) network, a 5G network, etc.

[0054] That is, each device (11 to 16) constituting the AI ​​system can be connected to each other through a cloud network (10). In particular, each device (11 to 16) can communicate with each other through a base station, but can also communicate with each other directly without going through a base station.

[0055] The AI ​​server (16) may include a server that performs AI processing and a server that performs operations on big data.

[0056] The AI ​​server (16) is connected to at least one of the AI ​​devices constituting the AI ​​system, such as a robot (11), an autonomous vehicle (12), an XR device (13), a smartphone (14), or a home appliance (15), through a cloud network (10), and can assist at least part of the AI ​​processing of the connected AI devices (11 to 15).

[0057] At this time, the AI ​​server (16) can train an artificial neural network according to a machine learning algorithm on behalf of the AI ​​devices (11 to 15), and can directly store the learning model or transmit it to the AI ​​devices (11 to 15).

[0058] At this time, the AI ​​server (16) can receive input data from the AI ​​devices (11 to 15), infer a result value for the received input data using a learning model, and generate a response or control command based on the inferred result value and transmit it to the AI ​​devices (11 to 15).

[0059] Alternatively, the AI ​​device (11 to 15) may infer a result value for input data using a direct learning model and generate a response or control command based on the inferred result value.

[0060] <AI+로봇>

[0061] Robots (11) can be implemented as guide robots, transport robots, cleaning robots, wearable robots, entertainment robots, pet robots, unmanned flying robots, etc. by applying AI technology.

[0062] The robot (11) may include a robot control module for controlling movement, and the robot control module may mean a software module or a chip that implements the same as hardware.

[0063] The robot (11) can obtain status information of the robot (11), detect (recognize) the surrounding environment and objects, generate map data, determine a movement path and driving plan, determine a response to user interaction, or determine an action using sensor information obtained from various types of sensors.

[0064] Here, the robot (11) can use sensor information acquired from at least one sensor among lidar, radar, and camera to determine a movement path and driving plan.

[0065] The robot (11) can perform the above-described operations using a learning model comprised of at least one artificial neural network. For example, the robot (11) can recognize its surroundings and objects using the learning model, and determine operations using the recognized surrounding environment information or object information. Here, the learning model may be learned directly by the robot (11) or by an external device such as an AI server (16).

[0066] At this time, the robot (11) may perform an action by generating a result using a direct learning model, but it may also perform an action by transmitting sensor information to an external device such as an AI server (16) and receiving the result generated accordingly.

[0067] The robot (11) can determine a movement path and a driving plan using at least one of map data, object information detected from sensor information, or object information acquired from an external device, and control a driving unit to drive the robot (11) according to the determined movement path and driving plan.

[0068] Map data may include object identification information for various objects positioned in the space where the robot (11) moves. For example, map data may include object identification information for fixed objects such as walls and doors, as well as movable objects such as flower pots and desks. Furthermore, object identification information may include name, type, distance, location, etc.

[0069] Additionally, the robot (11) can perform actions or drive by controlling the driving unit based on the user's control / interaction. At this time, the robot (11) can acquire intention information regarding the interaction based on the user's actions or voice utterances, and determine a response based on the acquired intention information to perform the action.

[0070] <AI+자율주행>

[0071] Autonomous vehicles (12) can be implemented as mobile robots, vehicles, unmanned aerial vehicles, etc. by applying AI technology.

[0072] An autonomous vehicle (12) may include an autonomous driving control module for controlling autonomous driving functions. The autonomous driving control module may refer to a software module or a chip implementing the same as hardware. The autonomous driving control module may be included internally as a component of the autonomous vehicle (12), but may also be configured as separate hardware and connected to the exterior of the autonomous vehicle (12).

[0073] An autonomous vehicle (12) can obtain status information of the autonomous vehicle (12), detect (recognize) the surrounding environment and objects, generate map data, determine a movement path and driving plan, or determine an action by using sensor information obtained from various types of sensors.

[0074] Here, the autonomous vehicle (12) can use sensor information acquired from at least one sensor among lidar, radar, and camera, similar to the robot (11), to determine the movement path and driving plan.

[0075] In particular, an autonomous vehicle (12) can recognize an environment or object in an area where the field of vision is obscured or an area beyond a certain distance by receiving sensor information from external devices, or can receive information recognized directly from external devices.

[0076] An autonomous vehicle (12) can perform the above-described operations using a learning model comprised of at least one artificial neural network. For example, the autonomous vehicle (12) can recognize its surroundings and objects using the learning model, and determine a driving route using the recognized surrounding environment information or object information. Here, the learning model may be learned directly by the autonomous vehicle (12) or by an external device such as an AI server (16).

[0077] At this time, the autonomous vehicle (12) may perform an action by generating a result using a direct learning model, but may also perform an action by transmitting sensor information to an external device such as an AI server (16) and receiving the result generated accordingly.

[0078] An autonomous vehicle (12) can determine a movement path and a driving plan using at least one of map data, object information detected from sensor information, or object information acquired from an external device, and control a driving unit to drive the autonomous vehicle (12) according to the determined movement path and driving plan.

[0079] Map data may include object identification information for various objects located in the space (e.g., road) where the autonomous vehicle (12) travels. For example, map data may include object identification information for fixed objects such as streetlights, rocks, and buildings, as well as movable objects such as vehicles and pedestrians. Furthermore, object identification information may include name, type, distance, location, and the like.

[0080] Additionally, the autonomous vehicle (12) can perform actions or drive by controlling the driving unit based on the user's control / interaction. At this time, the autonomous vehicle (12) can acquire intention information regarding the interaction based on the user's actions or voice utterances, and determine a response based on the acquired intention information to perform the action.

[0081] <AI+XR>

[0082] The XR device (13) can be implemented as an HMD (Head-Mount Display), a HUD (Head-Up Display) equipped in a vehicle, a television, a mobile phone, a smart phone, a computer, a wearable device, a home appliance, digital signage, a vehicle, a fixed robot, or a mobile robot by applying AI technology.

[0083] The XR device (13) can obtain information about the surrounding space or real objects by analyzing 3D point cloud data or image data acquired through various sensors or from an external device to generate location data and attribute data for 3D points, and can render and output an XR object to be output. For example, the XR device (13) can output an XR object including additional information about a recognized object in correspondence with the recognized object.

[0084] The XR device (13) can perform the above-described operations using a learning model composed of at least one artificial neural network. For example, the XR device (13) can recognize a real-world object from 3D point cloud data or image data using the learning model, and provide information corresponding to the recognized real-world object. Here, the learning model may be learned directly in the XR device (13) or learned from an external device such as an AI server (16).

[0085] At this time, the XR device (13) may perform an action by generating a result using a direct learning model, but may also perform an action by transmitting sensor information to an external device such as an AI server (16) and receiving the result generated accordingly.

[0086] <AI+로봇+자율주행>

[0087] Robots (11) can be implemented as guide robots, transport robots, cleaning robots, wearable robots, entertainment robots, pet robots, unmanned flying robots, etc. by applying AI technology and autonomous driving technology.

[0088] A robot (11) to which AI technology and autonomous driving technology are applied may refer to a robot itself with autonomous driving functions, or a robot (11) that interacts with an autonomous vehicle (12).

[0089] A robot (11) with autonomous driving function can be a general term for devices that move on their own along a given path without user control or move by determining the path on their own.

[0090] A robot (11) and a self-driving vehicle (12) with autonomous driving capabilities may use a common sensing method to determine one or more of a movement path or a driving plan. For example, a robot (11) and a self-driving vehicle (12) with autonomous driving capabilities may use information sensed through lidar, radar, and cameras to determine one or more of a movement path or a driving plan.

[0091] A robot (11) interacting with an autonomous vehicle (12) may exist separately from the autonomous vehicle (12), and may be linked to autonomous driving functions inside or outside the autonomous vehicle (12), or may perform actions linked to a user riding in the autonomous vehicle (12).

[0092] At this time, the robot (11) interacting with the autonomous vehicle (12) can control or assist the autonomous driving function of the autonomous vehicle (12) by acquiring sensor information on behalf of the autonomous vehicle (12) and providing it to the autonomous vehicle (12), or by acquiring sensor information and generating surrounding environment information or object information and providing it to the autonomous vehicle (12).

[0093] Alternatively, a robot (11) interacting with an autonomous vehicle (12) may monitor a user riding in the autonomous vehicle (12) or control the functions of the autonomous vehicle (12) through interaction with the user. For example, if the robot (11) determines that the driver is drowsy, it may activate the autonomous driving function of the autonomous vehicle (12) or assist in controlling the driving unit of the autonomous vehicle (12). Here, the functions of the autonomous vehicle (12) controlled by the robot (11) may include not only the autonomous driving function, but also functions provided by a navigation system or audio system installed inside the autonomous vehicle (12).

[0094] Alternatively, a robot (11) interacting with an autonomous vehicle (12) may provide information to the autonomous vehicle (12) or assist functions from outside the autonomous vehicle (12). For example, the robot (11) may provide traffic information, including signal information, to the autonomous vehicle (12), such as a smart traffic light, or may interact with the autonomous vehicle (12) to automatically connect an electric charger to a charging port, such as an automatic electric charger for an electric vehicle.

[0095] <AI+로봇+XR>

[0096] Robots (11) can be implemented as guide robots, transport robots, cleaning robots, wearable robots, entertainment robots, pet robots, unmanned flying robots, drones, etc. by applying AI technology and XR technology.

[0097] A robot (11) to which XR technology is applied may refer to a robot that is the subject of control / interaction within an XR image. In this case, the robot (11) is distinct from the XR device (13) and can be linked with each other.

[0098] When a robot (11) that is the target of control / interaction within an XR image obtains sensor information from sensors including a camera, the robot (11) 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. In addition, the robot (11) can operate based on a control signal input through the XR device (13) or a user's interaction.

[0099] For example, a user can check an XR image corresponding to the viewpoint of a remotely connected robot (11) through an external device such as an XR device (13), and through interaction, adjust the autonomous driving path of the robot (11), control the operation or driving, or check information on surrounding objects.

[0100] <AI+자율주행+XR>

[0101] Autonomous vehicles (12) can be implemented as mobile robots, vehicles, unmanned aerial vehicles, etc. by applying AI technology and XR technology.

[0102] An autonomous vehicle (12) to which XR technology is applied may refer to an autonomous vehicle equipped with a means for providing XR images, an autonomous vehicle that is the subject of control / interaction within an XR image, etc. In particular, an autonomous vehicle (12) that is the subject of control / interaction within an XR image is distinct from an XR device (13) and can be linked with each other.

[0103] An autonomous vehicle (12) equipped with a means for providing XR images can acquire sensor information from sensors including cameras and output XR images generated based on the acquired sensor information. For example, the autonomous vehicle (12) can be equipped with a HUD to output XR images, thereby providing passengers with XR objects corresponding to real objects or objects on the screen.

[0104] At this time, when the XR object is output to the HUD, at least a part of the XR object may be output so as to overlap with an actual object toward which the passenger's gaze is directed. On the other hand, when the XR object is output to a display provided inside the autonomous vehicle (12), at least a part of the XR object may be output so as to overlap with an object on the screen. For example, the autonomous vehicle (12) may output XR objects corresponding to objects such as a road, another vehicle, a traffic light, a traffic sign, a two-wheeled vehicle, a pedestrian, a building, etc.

[0105] When an autonomous vehicle (12) that is the target of control / interaction within an XR image acquires sensor information from sensors including a camera, the autonomous vehicle (12) or the XR device (13) generates an XR image based on the sensor information, and the XR device (13) can output the generated XR image. In addition, the autonomous vehicle (12) can operate based on a control signal input through an external device such as the XR device (13) or a user's interaction.

[0106] [Augmented Reality Technology]

[0107] Extended Reality (XR) is a general term for Virtual Reality (VR), Augmented Reality (AR), and Mixed Reality (MR). VR technology provides real-world objects and backgrounds only as CG images, AR technology provides virtually created CG images on top of images of real objects, and MR technology is a computer graphics technology that provides virtual objects mixed and combined in the real world.

[0108] MR technology is similar to AR in that it presents both real and virtual objects simultaneously. However, while AR uses virtual objects to complement real objects, MR uses virtual and real objects on an equal footing.

[0109] XR technology can be applied to HMD (Head-Mount Display), HUD (Head-Up Display), mobile phones, tablet PCs, laptops, desktops, TVs, digital signage, etc., and devices to which XR technology is applied can be called XR devices.

[0110] Below, an electronic device providing augmented reality according to an embodiment of the present invention will be described. In particular, a projector applicable to augmented reality and an electronic device including the same will be described in detail.

[0111] Figure 2 is a block diagram showing the configuration of an extended reality electronic device (20) according to an embodiment of the present invention.

[0112] Referring to FIG. 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), and a power supply unit (28). The components illustrated in FIG. 2 are not essential for implementing the electronic device (20), and thus, the electronic device (20) described in this specification may have more or fewer components than the components listed above.

[0113] More specifically, among the above components, the wireless communication unit (21) may include one or more modules that enable 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.

[0114] This wireless communication unit (21) may include at least one of a broadcast reception module, a mobile communication module, a wireless Internet module, a short-range communication module, and a location information module.

[0115] The input unit (22) may include a camera or video input unit for inputting video signals, a microphone or audio input unit for inputting audio signals, and a user input unit (e.g., a touch key, a mechanical key, etc.) for receiving information from a user. Voice data or image data collected from the input unit (22) may be analyzed and processed into a user's control command.

[0116] The sensing unit (23) may include one or more sensors for sensing at least one of information within the electronic device (20), information about the surrounding environment surrounding the electronic device (20), and user information.

[0117] For example, the sensing unit (23) may include at least one of a proximity sensor, an illumination sensor, a touch sensor, an acceleration sensor, a magnetic sensor, a G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor (IR sensor), a fingerprint recognition sensor, an ultrasonic sensor, an optical sensor (e.g., a photographing device), a microphone, a battery gauge, an environmental sensor (e.g., a barometer, a hygrometer, a thermometer, a radiation detection sensor, a heat detection sensor, a gas detection sensor, etc.), and a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric recognition sensor, etc.). Meanwhile, the electronic device (20) disclosed in the present specification may utilize information sensed by at least two or more of these sensors in combination.

[0118] The output unit (24) is for generating output related to visual, auditory, or tactile sensations, and may include at least one of a display unit, an audio output unit, a haptic module, and an optical output unit. The display unit may be formed as a touch screen by forming a mutual layer structure with a touch sensor or by forming an integral structure. This touch screen may function as a user input means that provides an input interface between the augmented reality electronic device (20) and the user, and at the same time, may provide an output interface between the augmented reality electronic device (20) and the user.

[0119] The interface unit (25) serves as a passageway for various types of external devices connected to the electronic device (20). Through the interface unit (25), the electronic device (20) can receive virtual reality or augmented reality content from the external device, and can perform mutual interaction by exchanging various input signals, sensing signals, and data.

[0120] For example, the interface unit (25) may include at least one of a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, an audio I / O (Input / Output) port, a video I / O (Input / Output) port, and an earphone port.

[0121] In addition, the memory (26) stores data that supports various functions of the electronic device (20). The memory (26) can store a plurality of application programs (or applications) that run on the electronic device (20), data for the operation of the electronic device (20), and commands. At least some of these application programs can be downloaded from an external server via wireless communication. In addition, at least some of these application programs can exist on the electronic device (20) from the time of shipment for the basic functions of the electronic device (20) (e.g., call receiving and making functions, message receiving and making functions).

[0122] In addition to operations related to the application program, the control unit (27) typically controls the overall operation of the electronic device (20). The control unit (27) can process signals, data, information, etc. input or output through the components discussed above.

[0123] In addition, the control unit (27) can control at least some of the components by driving an application program stored in the memory (26) to provide appropriate information to the user or process a function. Furthermore, the control unit (27) can operate at least two or more of the components included in the electronic device (20) in combination with each other to drive the application program.

[0124] In addition, the control unit (27) can detect the movement of the electronic device (20) or the user by using a gyroscope sensor, gravity sensor, motion sensor, etc. included in the sensing unit (23). Alternatively, the control unit (27) can detect an object approaching the electronic device (20) or the user by using a proximity sensor, a light sensor, a magnetic sensor, an infrared sensor, an ultrasonic sensor, a light sensor, etc. included in the sensing unit (23). In addition, the control unit (27) can also detect the movement of the user by using sensors provided in a controller that operates in conjunction with the electronic device (20).

[0125] Additionally, the control unit (27) can perform operations (or functions) of the electronic device (20) using an application program stored in the memory (26).

[0126] The power supply unit (28) receives external power or internal power under the control of the control unit (27) and supplies power to each component included in the electronic device (20). The power supply unit (28) includes a battery, and the battery may be provided in a built-in or replaceable form.

[0127] At least some of the above components may cooperate with each other to implement the operation, control, or control method of the electronic device according to various embodiments described below. In addition, the operation, control, or control method of the electronic device may be implemented on the electronic device by driving at least one application program stored in the memory (26).

[0128] Hereinafter, an electronic device described as an example of the present invention will be described based on an embodiment applied to an HMD (Head Mounted Display). However, embodiments of the electronic device according to the present invention may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (personal digital assistant), a PMP (portable multimedia player), a navigation device, a slate PC, a tablet PC, an ultrabook, and a wearable device. In addition to an HMD, the wearable device may include a smart watch, a contact lens, VR / AR / MR Glass, and the like.

[0129] FIG. 3 is a perspective view of an augmented reality electronic device according to an embodiment of the present invention.

[0130] As illustrated in FIG. 3, an electronic device according to an embodiment of the present invention may include a frame (100), a projector device (200), and a display unit (300).

[0131] The electronic device may be provided as a glass type (smart glass). The glass type electronic device is configured to be worn on the head of the human body and may include a frame (case, housing, etc.) (100) for this purpose. The frame (100) may be formed of a flexible material to facilitate wearing.

[0132] The frame (100) is supported by the head and provides a space for mounting various components. As illustrated, electronic components such as a projector device (200), a user input unit (130), or an audio output unit (140) may be mounted on the frame (100). In addition, a lens covering at least one of the left and right eyes may be detachably mounted on the frame (100).

[0133] The frame (100) may have a shape of glasses worn on the face of the user's body as shown in the drawing, but is not necessarily limited thereto, and may also have a shape of goggles or the like worn in close contact with the user's face.

[0134] Such a frame (100) may include a front frame (110) having at least one opening, and a pair of side frames (120) extending in the y direction (in FIG. 3) intersecting the front frame (110) and being parallel to each other.

[0135] The frame (100) may have the same or different length (DI) in the x direction and length (LI) in the y direction.

[0136] The project device (200) is provided to control various electronic components provided in an electronic device. The project device (200) may be used interchangeably with 'optical output device', 'optical projector device', 'light irradiation device', 'optical device', etc.

[0137] The projector device (200) can generate an image or a video of a sequence of images that are displayed to the user. The projector device (200) can include an image source panel that generates an image and a plurality of lenses that diffuse and converge light generated from the image source panel.

[0138] The project device (200) may be fixed to one of the two side frames (120). For example, the project device (200) may be fixed to the inside or outside of one of the side frames (120), or may be integrally formed by being built into the inside of one of the side frames (120). Alternatively, the project device (200) may be fixed to the front frame (110) or may be provided separately from the electronic device.

[0139] The display unit (300) may be implemented in the form of a head-mounted display (HMD). The HMD form refers to a display method that is mounted on the head and directly displays an image in front of the user's eyes. When the user wears the electronic device, the display unit (300) may be positioned to correspond to at least one of the left and right eyes so that the image can be directly displayed in front of the user's eyes. In this drawing, the display unit (300) is positioned in a portion corresponding to the right eye so as to output an image toward the user's right eye. However, as described above, the present invention is not limited thereto and may be positioned for both the left and right eyes.

[0140] The display unit (300) can allow the user to visually perceive the external environment while simultaneously displaying images generated by the projector device (200). For example, the display unit (300) can project images onto the display area using a prism.

[0141] The display unit (300) may be formed to be translucent so that the projected image and the general field of view in front (the range that the user sees through his eyes) can be viewed simultaneously. For example, the display unit (300) may be translucent and formed of an optical member including glass.

[0142] And the display unit (300) can be inserted into and fixed to an opening included in the front frame (110), or can be positioned on the back surface of the opening (i.e., between the opening and the user) and fixed to the front frame (110). In the drawing, an example in which the display unit (300) is positioned on the back surface of the opening and fixed to the front frame (110) is shown, but the display unit (300) can be positioned and fixed to various positions of the frame (100).

[0143] As illustrated in FIG. 3, when the electronic device projects image light from the projector device (200) onto one side of the display unit (300), the image light is emitted to the other side through the display unit (300), thereby allowing the user to see the image generated from the projector device (200).

[0144] Accordingly, the user can view the external environment through the opening of the frame (100) and simultaneously view the image generated by the projector device (200). That is, the image output through the display unit (300) can be seen to overlap with the general field of view. By utilizing these display characteristics, electronic devices can provide augmented reality (AR) that superimposes a virtual image on a real image or background and shows it as a single image.

[0145] Furthermore, in addition to these operations, images generated by the external environment and the projector device (200) may be provided to the user with a time difference for a short period of time that is not recognized by the user. For example, within a single frame, the external environment may be provided to the user during one section, and images from the projector device (200) may be provided to the user during another section.

[0146] Alternatively, both overlap and time difference may be provided.

[0147] Figures 4 to 6 are conceptual diagrams for explaining various display methods applicable to a display unit according to an embodiment of the present invention.

[0148] Specifically, FIG. 4 is a drawing for explaining an embodiment of a prism-type optical member, FIG. 5 is a drawing for explaining an embodiment of a waveguide-type optical member, and FIG. 6 is a drawing for explaining an embodiment of a surface reflection-type optical member.

[0149] As illustrated in FIG. 4, a prism-type optical member may be used in the display unit (300-1) according to an embodiment of the present invention.

[0150] As an example, a prism-type optical member may be a flat-type glass optical member in which the surface where image light is incident and the surface (300a) where the image light is emitted are planes, as shown in (a) of FIG. 4, or a freeform glass optical member in which the surface (300b) where the image light is emitted is formed as a curved surface without a constant radius of curvature, as shown in (b) of FIG. 4.

[0151] A flat-type glass optical member can receive image light generated from a projector device (200) through a flat side, reflect the light by a total reflection mirror (300a) provided inside, and emit the light toward the user. Here, the total reflection mirror (300a) provided inside the flat-type glass optical member can be formed inside the flat-type glass optical member by a laser.

[0152] The freeform glass optical member is configured to become thinner as it gets further away from the incident surface, so that the image light generated from the projector device (200) can be incident on the curved side, totally reflected internally, and emitted toward the user.

[0153] As illustrated in FIG. 5, a display unit (300-2) according to another embodiment of the present invention may use a waveguide type optical element or a light guide optical element (LOE).

[0154] Examples of optical elements of the waveguide (or waveguide) or light guide type include a glass optical element of a segmented beam splitter type as illustrated in (a) of FIG. 5, a glass optical element of a sawtooth prism type as illustrated in (b) of FIG. 5, a glass optical element having a diffractive optical element (DOE) as illustrated in (c) of FIG. 5, a glass optical element having a hologram optical element (HOE) as illustrated in (d) of FIG. 5, a glass optical element having a passive grating as illustrated in (e) of FIG. 5, and a glass optical element having an active grating as illustrated in (f) of FIG.

[0155] As shown in (a) of FIG. 5, a glass optical member of a segmented beam splitter type may be provided with a total reflection mirror (301a) on the side where the light image is incident and a segmented beam splitter (301b) on the side where the light image is emitted, as shown.

[0156] Accordingly, the optical image generated in the projector device (200) is totally reflected by the total reflection mirror (301a) inside the glass optical member, and the totally reflected optical image is partially separated and emitted by the partial reflection mirror (301b) while guiding light along the length direction of the glass, so that it can be recognized by the user's eyes.

[0157] As shown in (b) of Fig. 5, the glass optical member of the sawtooth prism type causes the image light of the projector device (200) to be incident diagonally on the side of the glass and is totally reflected inside the glass, and the light image is emitted to the outside of the glass by the sawtooth-shaped protrusions (302) provided on the side from which it is emitted, so that it can be recognized by the user's eyes.

[0158] A glass optical element having a diffractive optical element (DOE) as illustrated in (c) of FIG. 5 may be provided with a first diffractive portion (303a) on the surface on which the light image is incident and a second diffractive portion (303b) on the surface on which the light image is emitted. These first and second diffractive portions (303a, 303b) may be provided in a form in which a specific pattern is patterned on the surface of the glass or in a form in which a separate diffractive film is attached.

[0159] Accordingly, the light image generated from the projector device (200) is diffracted upon entering through the first diffraction section (303a), is totally reflected, and guides light along the length direction of the glass, and is emitted through the second diffraction section (303b), so that it can be recognized by the user's eyes.

[0160] A glass optical element having a hologram optical element (HOE) as illustrated in (d) of FIG. 5 may be provided with an out-coupler (304) inside the glass on the side from which the optical image is emitted. Accordingly, an optical image is incident from a projector device (200) diagonally through the side of the glass, is totally reflected, is guided along the length direction of the glass, and is emitted by the out-coupler (304) so ​​that it can be recognized by the user's eyes. Such a hologram optical element may be further subdivided into a structure having a passive grating and a structure having an active grating by slightly changing the structure.

[0161] A glass optical member having a passive grating, such as that illustrated in (e) of FIG. 5, may be provided with an in-coupler (305a) on the surface opposite to the glass surface on which the light image is incident, and an out-coupler (305b) on the surface opposite to the glass surface on which the light image is emitted. Here, the in-coupler (305a) and the out-coupler (305b) may be provided in the form of a film having a passive grating.

[0162] Accordingly, the light image incident on the incident side of the glass surface is totally reflected by the in-coupler (305a) provided on the opposite surface and guided along the length direction of the glass, and is emitted through the opposite surface of the glass by the out-coupler (305b), so that it can be recognized by the user's eyes.

[0163] A glass optical member having an active grating as illustrated in (f) of FIG. 5 may be provided with an in-coupler (306a) formed as an active grating inside the glass on the side where the light image is incident, and an out-coupler (306b) formed as an active grating inside the glass on the side where the light image is emitted.

[0164] Accordingly, the light image incident on the glass is guided along the length direction of the glass while being totally reflected by the in-coupler (306a), and is emitted outside the glass by the out-coupler (306b), so that it can be recognized by the user's eyes.

[0165] According to a modified example, a pin mirror type optical member may be used as the display unit.

[0166] In addition, as shown in (a) of Fig. 6, a freeform combiner type surface reflection type optical member may be formed as a single glass with multiple flat surfaces having different incident angles of light images, so that a freeform combiner glass having an overall curved surface may be used to perform the role of a combiner. Such a freeform combiner glass may be output to the user with the incident angles of light images being different for each area.

[0167] As shown in (b) of FIG. 6, a surface reflection type optical member of the Flat HOE method can be provided by coating or patterning a holographic optical member (HOE, 311) on the surface of a flat glass, and an optical image incident from a projector device (200) can pass through the holographic optical member (311), be reflected from the surface of the glass, and then pass through the holographic optical member (311) again to be emitted toward the user.

[0168] The freeform HOE type surface reflection type optical member as shown in (c) of Fig. 6 can be provided by coating or patterning a holographic optical member (HOE, 313) on the surface of a freeform glass, and the operating principle can be the same as that described in (b) of Fig. 6.

[0169] Fig. 7 is a perspective view of a project device according to an embodiment, Fig. 8 is another perspective view of a project device according to an embodiment, and Figs. 9 and 10 are schematic diagrams of the inside of a project device according to an embodiment.

[0170] Referring to FIGS. 7 to 10, a project device (200) according to an embodiment may include a housing (210), a light source unit (220), a projection lens unit (230), and a light modulator (240).

[0171] The housing (210) may have a space or housing groove in which each component of the projector device (200) is accommodated or placed. The housing (210) may be located on the outside of the projector device (200). For example, a light source unit (220), a projection lens unit (230), and a light modulator (240) may be placed inside the housing (210).

[0172] Additionally, the housing (210) may have an open structure on one side. Accordingly, each of the above-described components may be assembled through the open area or surface. Furthermore, light may be emitted to the outside through the opening of the housing (210).

[0173] The housing (210) may have various shapes. For example, the housing (210) may have a hexahedral structure. Accordingly, the project device according to the embodiment can be easily mounted on an electronic device. Furthermore, the project device according to the embodiment can be easily miniaturized or compacted.

[0174] The light source unit (220) can emit light. The light source unit (220) can emit light in a first direction. The light source unit (220) can emit light of a specific wavelength band. For example, the light source unit (220) can output white light. Additionally, the light source unit (220) can output light of a red, green, or blue wavelength band.

[0175] The light source unit (220) may be disposed inside the housing (210). The light source unit (220) may emit light toward the projection lens unit (230). The light source unit (220) may be disposed spaced apart from the projection lens unit (230) in a first direction. The light source unit (220) may be disposed adjacent to the first lens (L1) of the projection lens unit (230). In addition, the light source unit (220) may be disposed spaced apart from the light modulator (240) in the first direction. The light emitted by the light source unit (220) may pass through the projection lens unit (230) and reach the light modulator (240).

[0176] The light source unit (220) may include at least one light source. In an embodiment, the light source unit (220) may include a first light source to a third light source (not shown). The first light source to the third light source may be adjacently positioned at a predetermined distance. The first light source to the third light source may emit light of different wavelength bands or colors. For example, the first light source may emit light of a blue wavelength, the second light source may emit light of a green wavelength, and the third light source may emit light of a red wavelength. Since the light source unit (220) includes the first light source to the third light source, light can be irradiated from a single light source, thereby enabling miniaturization and compactness of the projector device.

[0177] In addition, in the projector device according to the embodiment, the first direction may correspond to the 'X-axis direction' in the drawing. The first direction may correspond to the direction from the light source unit (220) toward the projection lens unit (230). In addition, the first direction may correspond to the optical axis direction. Furthermore, the second direction may correspond to the Y-axis direction in the drawing. The second direction may be a direction perpendicular to the first direction.

[0178] The light source unit (220) may be placed in the first region (a1). The first region (a1) may refer to a region located at the bottom with respect to the optical axis of the first lens (L1) of the projection lens unit (230). In addition, the second region (a2) may refer to a region located at the top with respect to the optical axis of the first lens (L1) of the projection lens unit (230). The first region (a1) and the second region (a2) may be positioned in a second direction perpendicular to the first direction. In addition, the first region (a1) and the second region (a2) may be positioned at the front end of the projection lens unit (230). That is, the light source unit (220) may be positioned at the bottom with respect to the optical axis of the first lens (L1). The light source unit (220) may irradiate light from the first region (a1) toward the projection lens unit (230). The light irradiated by the light source unit (220) in the first area (a1) can pass through the projection lens unit (230), be reflected by the light modulator (240), and then pass through the projection lens unit (230) again to be emitted into the second area (a2). Since the area where the light is irradiated and the area where the light is emitted are arranged in the same direction, the light illumination system and the imaging system can be integrated into one, and accordingly, the projector device can be made smaller and more compact.

[0179] The projection lens unit (230) may be arranged at the rear end of the light source unit (220). The light irradiated by the light source unit (220) may be projected onto the projection lens unit (230). The projection lens unit (230) may allow the light irradiated by the light source unit (220) to reach the light modulator (240). In addition, the projection lens unit (230) may project the light reflected by the light modulator (240) onto a screen or waveguide (or display unit). The projection lens unit (230) may be arranged spaced apart from the light source unit (220) in a first direction. The projection lens unit (230) may partially overlap the light source unit (220) or the light modulator (240) in the first direction. Light irradiated to multiple light sources of the light source unit (220) can form multiple unit cells after passing through the projection lens unit (230). Each of the multiple unit cells can have light of each wavelength band superimposed. In an embodiment, the projection lens unit (230) can adjust the size of the image so that light is incident within an effective aperture diameter (enterance pupil diameter, EPD) of a waveguide or the like. To this end, the projection lens unit (230) according to the embodiment can include a lens barrel (not shown) and multiple lenses arranged within the lens barrel.

[0180] The projection lens unit (230) may include a plurality of lenses. The plurality of lenses of the projection lens unit (230) may include at least three lenses aligned in the optical axis direction. The projection lens unit (230) according to an embodiment may include first to seventh lenses (L1, L2, L3, L4, L5, L6, L7). The first to seventh lenses (L1, L2, L3, L4, L5, L6, L7) may be arranged in a first direction. The first to seventh lenses (L1, L2, L3, L4, L5, L6, L7) may be sequentially arranged while being spaced apart from each other in the first direction. Each lens may include a surface adjacent to the light source unit (220) and a surface spaced apart from the light source unit (220). Each surface of the plurality of lenses may be convex or concave. Additionally, each surface of the plurality of lenses may be decentered with respect to the optical axis. Additionally, each surface of the plurality of lenses may be tilted with respect to a direction perpendicular to the optical axis.

[0181] The first lens (L1) may be a lens positioned closest to the light source (220) among the plurality of lenses. Light irradiated by the light source (220) may pass through the first lens (L1). The first lens (L1) may include a first surface (S1) adjacent to the light source (220) and a second surface (S2) spaced apart from the light source (220). The first surface (S1) of the first lens (L1) adjacent to the light source (220) may be convex toward the light source (220). The second surface (S2) of the first lens (L1) spaced apart from the light source (220) may be concave toward the light source (220).

[0182] The second lens (L2) may be arranged at the rear end of the first lens (L1). The second lens (L2) may be arranged between the first lens (L1) and the third lens (L3). The second lens (L2) may include a third surface (S3) adjacent to the light source (220) and a fourth surface (S4) spaced apart from the light source (220). The third surface (S3) of the second lens (L2) adjacent to the light source (220) may be convex toward the light source (220). The fourth surface (S4) of the second lens (L2) spaced apart from the light source (220) may be concave toward the light source (220).

[0183] The third lens (L3) may be arranged at the rear end of the second lens (L2). The third lens (L3) may be arranged between the second lens (L2) and the fourth lens (L4). The third lens (L3) may include a fifth surface (S5) adjacent to the light source (220) and a sixth surface (S6) spaced apart from the light source (220). The fifth surface (S5) of the third lens (L3) adjacent to the light source (220) may be convex toward the light source (220). The surface (S6) of the third lens (L3) spaced apart from the light source (220) may be concave toward the light source (220).

[0184] The fourth lens (L4) may be arranged at the rear end of the third lens (L3). The fourth lens (L4) may be arranged between the third lens (L3) and the fifth lens (L5). The fourth lens (L4) may include a seventh surface (S7) adjacent to the light source (220) and an eighth surface (S8) spaced apart from the light source (220). The seventh surface (S7) of the fourth lens (L4) adjacent to the light source (220) may be concave toward the light modulator (240). The eighth surface (S8) of the fourth lens (L4) spaced apart from the light source (220) may be convex toward the light modulator (240).

[0185] The fifth lens (L5) may be arranged at the rear end of the fourth lens (L4). The fifth lens (L5) may be arranged between the fourth lens (L4) and the sixth lens (L6). The fifth lens (L5) may include a ninth surface (S9) adjacent to the light source (220) and a tenth surface (S10) spaced apart from the light source (220). The ninth surface (S9) of the fifth lens (L5) adjacent to the light source (220) may be convex toward the light source (220). The tenth surface (S10) of the fifth lens (L5) spaced apart from the light source (220) may be convex toward the light modulator (240).

[0186] The sixth lens (L6) may be arranged at the rear end of the fifth lens (L5). The sixth lens (L6) may be arranged between the fifth lens (L5) and the seventh lens (L7). The sixth lens (L6) may include an eleventh surface (S11) adjacent to the light source (220) and a twelfth surface (S12) spaced apart from the light source (220). The eleventh surface (S11) of the sixth lens (L6) adjacent to the light source (220) may be concave toward the light modulator (240). The twelfth surface (S12) of the sixth lens (L6) spaced apart from the light source (220) may be convex toward the light modulator (240). The eleventh surface (S11) of the sixth lens (L6) may be referred to as the first outer surface, and the twelfth surface (S12) may be referred to as the second outer surface. That is, the first outer surface and the second outer surface may be two surfaces of the lens that is second adjacent to the optical modulator (240), and the first outer surface may be a surface spaced apart from the optical modulator (240) of the lens that is second adjacent to the optical modulator (240), and the second outer surface may be a surface adjacent to the optical modulator (240) of the lens that is second adjacent to the optical modulator (240).

[0187] The seventh lens (L7) may be arranged at the rear end of the sixth lens (L6). The seventh lens (L7) may be arranged between the sixth lens (L6) and the light modulator (240). The seventh lens (L7) may include a thirteenth surface (S13) adjacent to the light source (220) and a fourteenth surface (S14) spaced apart from the light source (220). The thirteenth surface (S13) of the seventh lens (L7) adjacent to the light source (220) may be flat. The fourteenth surface (S14) of the seventh lens (L7) spaced apart from the light source (220) may be convex toward the light modulator (240). The thirteenth surface (S13) of the seventh lens (L7) may be referred to as the third outer surface, and the fourteenth surface (S14) may be referred to as the fourth outer surface. That is, the third outer side and the fourth outer side may be two sides of the lens closest to the optical modulator (240), the third outer side may be a side spaced apart from the optical modulator (240) of the lens closest to the optical modulator (240), and the fourth outer side may be a side adjacent to the optical modulator (240) of the lens closest to the optical modulator (240).

[0188] The centers of the eleventh surface (S11) and the fourteenth surface (S14) may be decentered with respect to the optical axis. The optical axis may refer to an optical axis passing through the centers of the first to third lenses (L1, L2, L3). The centers of the eleventh surface (S11) and the fourteenth surface (S14) may be decentered in a direction perpendicular to the optical axis with respect to the optical axis. The center of the eleventh surface (S11) may be decentered upward with respect to the optical axis. That is, the center of the eleventh surface (S11) and the center of the fourteenth surface (S14) may be spaced apart from the optical axis by a certain distance in a direction perpendicular to the optical axis. Accordingly, the center of the eleventh surface (S11) and the center of the fourteenth surface (S14) may not be on the optical axis, and the center of the twelfth surface (S12) and the center of the thirteenth surface (S13) may be on the optical axis. In addition, the eleventh surface (S11) and the fourteenth surface (S14) may not have circular symmetry in the effective diameter region with respect to the optical axis. That is, the center of the eleventh surface (S11) may be decentered toward the second region (a2) with respect to the optical axis. The center of the fourteenth surface (S14) may be decentered toward the lower side with respect to the optical axis. That is, the center of the fourteenth surface (S14) may be decentered toward the first region (a1) with respect to the optical axis. The center of the eleventh surface (S11) and the center of the fourteenth surface (S14) may be decentered in opposite directions with respect to the optical axis. The distance (d1) at which the eleventh surface (S11) is decentered in a direction perpendicular to the optical axis with respect to the optical axis may be 1.0 mm to 1.2 mm. That is, the center of the eleventh surface (S11) can be spaced apart from the optical axis by 1.0 mm to 1.2 mm in a direction perpendicular to the optical axis connecting the centers of the first lens to the third lens. For example, the eleventh surface (S11) can be decentered by 1.14 mm from the optical axis. By spaced apart from the optical axis by 1.0 mm to 1.2 mm in a direction perpendicular to the optical axis, the resolution of the projector device and the light incidence angle of the optical modulator can be secured.Accordingly, the area where light enters the projection lens unit and the area where light exits from the projection lens unit can be separated, and the lighting system and imaging system of the projector device can be unified into a single optical system.

[0189] The 13th surface (S13) and the 14th surface (S14) can be tilted based on a surface perpendicular to the optical axis direction. The 13th surface (S13) and the 14th surface (S14) can form a certain angle with a surface perpendicular to the optical axis direction. That is, the 13th surface (S13) and the 14th surface (S14) can form a certain angle with a surface perpendicular to the optical axis by a straight line connecting the end points of the effective diameters. Therefore, the 13th surface (S13) and the 14th surface (S14) do not form circular symmetry based on the optical axis passing through the center of the first lens to the third lens. The 13th surface (S13) can form a first angle (θ1) with a surface perpendicular to the optical axis direction, and the 14th surface (S14) can form a second angle (θ2) with a surface perpendicular to the optical axis direction. The 13th surface (S13) can be tilted toward the first region (a1) with respect to a plane perpendicular to the optical axis direction. That is, in FIG. 9, the 13th surface (S13) can be tilted counterclockwise with respect to a plane perpendicular to the optical axis direction. The 14th surface (S14) can be tilted toward the second region (a2) with respect to a plane perpendicular to the optical axis direction. That is, in FIG. 9, the 14th surface (S14) can be tilted clockwise with respect to a plane perpendicular to the optical axis direction. The 13th surface (S13) and the 14th surface (S14) can be tilted in opposite directions with respect to a plane perpendicular to the optical axis direction. Accordingly, the width in the optical axis direction of the 7th lens (L7) can be different in the first region (a1) and the second region (a2). In the first region (a1), the width in the direction of the optical axis of the seventh lens (L7) may be smaller than the width in the direction of the optical axis of the seventh lens (L7) in the second region (a2). That is, the width in the direction of the optical axis of the seventh lens (L7) may become narrower from the second region side to the second region side. The first angle (θ1) formed by the 13th surface (S13) with respect to a surface perpendicular to the optical axis direction may be 9° to 9.6°. For example, the first angle (θ1) formed by the 13th surface (S13) with respect to a surface perpendicular to the optical axis direction may be 9.35°.The second angle (θ2) formed by the fourteenth surface (S14) with respect to a surface perpendicular to the optical axis direction may be 10.5° to 11.1°. For example, the second angle (θ2) formed by the fourteenth surface (S14) with respect to a surface perpendicular to the optical axis direction may be 10.827°. In this case, the Fnumber may be 2.2, the Fov (Field of view) may be 30, the EFL (Effective focal length) may be 10.904, and the TTL (Through-The-Lens) may be 12. By forming the range of the first angle to be 9° to 9.6° and forming the range of the second angle (θ2) to be 10.5° to 11.1°, the resolution of the projector device and the light incidence angle of the optical modulator may be secured. Accordingly, the area where light enters the projection lens unit and the area where light exits from the projection lens unit can be separated, and the lighting system and imaging system of the projector device can be unified into a single optical system.

[0190] Figure 11 is a schematic diagram of the interior of a project device according to another embodiment.

[0191] Referring to FIG. 11, the centers of the eleventh surface (S11), the thirteenth surface (S13), and the fourteenth surface (S14) are decentered with respect to the optical axis, and the thirteenth surface (S13) and the fourteenth surface (S14) can be tilted with respect to a plane perpendicular to the optical axis direction. In this case, the Fnumber may be 1.8, the Fov (Field of view) may be 30, the EFL (Effective focal length) may be 14.7, and the TTL (Through-The-Lens) may be 16.5.

[0192] Fig. 12 is an enlarged view of an optical modulator of a project device according to an embodiment.

[0193] Referring to FIGS. 9 to 12, the light modulator (240) may be placed at the rear end of the projection lens unit (230). The light modulator (240) may reflect light transmitted from the projection lens unit (230) back to the projection lens unit (230). The light modulator (240) may partially overlap with the projection lens unit (230) in the first direction. In addition, the light modulator (240) may partially overlap with the light source unit (220) in the first direction.

[0194] The optical modulator (240) can reflect incident light to project an image. For example, the optical modulator (240) can output or project an image or image based on an image signal input through the substrate (241). That is, the optical modulator (240) can modulate light emitted from the light source unit (220). The optical modulator (240) reflects illumination light into patterned light, etc., and the patterned light can pass through the projection lens unit (230) and be output to the outside of the projector. The optical modulator (240) according to an embodiment can include a digital micromirror device (DMD).

[0195] The optical modulator (240) may include a substrate (241) and a plurality of mirrors (242) arranged on the substrate (241). Each mirror (242) may reflect or block light according to a signal (e.g., a digital signal). In other words, the optical modulator (240) may control the state of each mirror (242) based on an image signal applied through the substrate (241) to project or display an image (or image) corresponding to the image signal. For example, when light is reflected by the control of the mirror (242), a bright image area may be output, and when light is blocked, a dark image area may be output.

[0196] The substrate (241) can be tilted with respect to a plane perpendicular to the optical axis direction. The substrate (241) can be tilted at a certain angle (θ3) with respect to the plane perpendicular to the optical axis direction so that light is emitted to the second area (a2). The substrate (241) can be tilted so that the light reflection surface faces the second area (a2). The substrate (241) can be tilted at a third angle (θ3) with respect to the plane perpendicular to the optical axis direction. The third angle (θ3) can be 6.5° to 7.5°. For example, the third angle (θ3) can be 7°. By forming the third angle (θ3) to be 6.5° to 7.5°, the resolution of the projector device and the light incidence angle of the optical modulator can be secured. Accordingly, the area where light enters the projection lens unit and the area where light exits from the projection lens unit can be separated, and the lighting system and imaging system of the projector device can be unified into a single optical system.

[0197] The difference between the tilt angle (θ2) of the 14th surface (S14) with respect to the plane perpendicular to the optical axis direction and the tilt angle (θ3) of the substrate (241) with respect to the plane perpendicular to the optical axis direction may be -5˚ to +5˚. The difference between the second angle (θ2) and the third angle (θ3) may be -5˚ to +5˚. By maintaining the tilt angle of the 14th surface (S14) and the tilt angle of the substrate (241) within the range of -5˚ to +5˚, the resolution of the projector device and the light incident angle of the optical modulator (240) can be secured. Accordingly, the area where light enters the projection lens unit and the area where light exits from the projection lens unit can be separated, and the illumination system and the imaging system of the projector device can be unified into one optical system.

[0198] The mirror (242) can form a predetermined angle with the substrate (241). Each of the plurality of mirrors (242) can form a predetermined angle with the substrate (241) to allow light to be emitted to the second area (a2). In other words, the mirror (242) can be tilted at a predetermined angle with respect to the substrate (241). The mirror (242) can be tilted with respect to the substrate (241) so that the mirror surface on which light is reflected faces the first area (a1). That is, the mirror (242) can be tilted in a direction opposite to the direction in which the substrate (241) is tilted. The mirror (242) can form a fourth angle (θ4) with respect to the substrate (241). The fourth angle (θ4) can be 16.5° to 17.5°. For example, the fourth angle (θ4) can be 17°. By forming the fourth angle (θ4) to be 16.5˚ to 17.5˚, the resolution of the projector device and the light incidence angle of the optical modulator can be secured. Accordingly, the area where light enters the projection lens unit and the area where light exits from the projection lens unit can be separated, and the illumination system and imaging system of the projector device can be unified into a single optical system.

[0199] Figures 13 and 14 are schematic diagrams of the inside of a project device according to another embodiment.

[0200] Referring to FIGS. 13 and 14, the projection lens unit (230) may include first to sixth lenses (L1, L2, L3, L4, L5, L6) sequentially arranged from the light source unit (220) side to the light modulator (240) side.

[0201] The first lens (L1) may be a lens positioned closest to the light source unit (220) among the plurality of lenses. Light irradiated by the light source unit (220) may pass through the first lens (L1). The first lens (L1) may include a first surface (S1) adjacent to the light source unit (220) and a second surface (S2) spaced apart from the light source unit (220). The first surface (S1) of the first lens (L1) adjacent to the light source unit (220) may be convex toward the light source unit (220). The second surface (S2) of the first lens (L1) spaced apart from the light source unit (220) may be convex toward the light modulator (240).

[0202] The second lens (L2) may be arranged at the rear end of the first lens (L1). The second lens (L2) may be arranged between the first lens (L1) and the third lens (L3). The second lens (L2) may include a third surface (S3) adjacent to the light source (220) and a fourth surface (S4) spaced apart from the light source (220). The third surface (S3) of the second lens (L2) adjacent to the light source (220) may be flat. The fourth surface (S4) of the second lens (L2) spaced apart from the light source (220) may be concave toward the light source (220).

[0203] The third lens (L3) may be arranged at the rear end of the second lens (L2). The third lens (L3) may be arranged between the second lens (L2) and the fourth lens (L4). The third lens (L3) may include a fifth surface (S5) adjacent to the light source (220) and a sixth surface (S6) spaced apart from the light source (220). The fifth surface (S5) of the third lens (L3) adjacent to the light source (220) may be concave toward the light modulator (240). The sixth surface (S6) of the third lens (L3) spaced apart from the light source (220) may be convex toward the light modulator (240).

[0204] The fourth lens (L4) may be arranged at the rear end of the third lens (L3). The fourth lens (L4) may be arranged between the third lens (L3) and the fifth lens (L5). The fourth lens (L4) may include a seventh surface (S7) adjacent to the light source (220) and an eighth surface (S8) spaced apart from the light source (220). The seventh surface (S7) of the fourth lens (L4) adjacent to the light source (220) may be convex toward the light source (220). The eighth surface (S8) of the fourth lens (L4) spaced apart from the light source (220) may be concave toward the light source (220).

[0205] The fifth lens (L5) may be arranged at the rear end of the fourth lens (L4). In addition, the fifth lens (L5) may be arranged at the front end of the sixth lens (L6). The fifth lens (L5) may be arranged between the fourth lens (L4) and the sixth lens (L6). The fifth lens (L5) may include a ninth surface (S9) adjacent to the light source (220) and a tenth surface (S10) spaced apart from the light source (220). The ninth surface (S9) of the fifth lens (L5) adjacent to the light source (220) may be concave toward the light modulator (240). The tenth surface (S10) of the fifth lens (L5) spaced apart from the light source (220) may be convex toward the light modulator (240). The ninth surface (S9) of the fifth lens (L5) may be referred to as the first outer surface, and the tenth surface (S10) may be referred to as the second outer surface. That is, the first outer surface and the second outer surface may be two surfaces of the lens that is second adjacent to the optical modulator (240), and the first outer surface may be a surface spaced apart from the optical modulator (240) of the lens that is second adjacent to the optical modulator (240), and the second outer surface may be a surface adjacent to the optical modulator (240) of the lens that is second adjacent to the optical modulator (240).

[0206] The sixth lens (L6) may be arranged at the rear end of the fifth lens (L5). The sixth lens (L6) may be the lens closest to the light modulator (240). The sixth lens (L6) may be arranged between the fifth lens (L5) and the light modulator (240). The sixth lens (L6) may include an eleventh surface (S11) adjacent to the light source (220) and a twelfth surface (S12) spaced apart from the light source (220). The eleventh surface (S11) of the sixth lens (L6) adjacent to the light source (220) may be flat. The twelfth surface (S12) of the sixth lens (L6) spaced apart from the light source (220) may be convex toward the light modulator (240). The eleventh surface (S11) of the sixth lens (L6) may be referred to as the third outer surface, and the twelfth surface (S12) may be referred to as the fourth outer surface. That is, the third outer surface and the fourth outer surface may be two surfaces of the lens that are closest to the optical modulator (240), the third outer surface may be a surface spaced apart from the optical modulator (240) of the lens that is closest to the optical modulator (240), and the fourth outer surface may be a surface adjacent to the optical modulator (240) of the lens that is closest to the optical modulator (240).

[0207] The centers of the ninth surface (S9) and the twelfth surface (S12) may be decentered with respect to the optical axis. The centers of the ninth surface (S9) and the twelfth surface (S12) may be decentered in a direction perpendicular to the optical axis with respect to the optical axis. The center of the ninth surface (S9) may be decentered upward with respect to the optical axis. That is, the center of the ninth surface (S9) and the center of the twelfth surface (S12) may be spaced apart from the optical axis by a certain distance in a direction perpendicular to the optical axis. Accordingly, the center of the ninth surface (S9) and the center of the twelfth surface (S12) may not be on the optical axis, and the center of the tenth surface (S10) and the center of the eleventh surface (S11) may be on the optical axis. In addition, the ninth surface (S9) and the twelfth surface (S12) may not have circular symmetry in the effective diameter region with respect to the optical axis. That is, the center of the ninth surface (S9) can be decentered toward the second region (a2) with respect to the optical axis. The center of the twelfth surface (S12) can be decentered toward the lower side with respect to the optical axis. That is, the center of the twelfth surface (S12) can be decentered toward the first region (a1) with respect to the optical axis. The center of the ninth surface (S9) and the center of the twelfth surface (S4) can be decentered in opposite directions with respect to the optical axis. The ninth surface (S9) can be decentered by 1.0 mm to 1.2 mm in a direction perpendicular to the optical axis from the optical axis. That is, the ninth surface (S9) can be spaced apart by 1.0 mm to 1.2 mm in a direction perpendicular to the optical axis with respect to the optical axis. For example, the ninth surface (S9) can be decentered by 1.14 mm from the optical axis. By decentering the ninth surface (S9) by 1.0 mm to 1.2 mm in a direction perpendicular to the optical axis, the resolution of the projector device and the angle of incidence of light of the optical modulator can be secured. Accordingly, the area where light enters the projection lens unit and the area where light exits from the projection lens unit can be separated, and the illumination system and imaging system of the projector device can be unified into a single optical system.

[0208] The eleventh surface (S11) and the twelfth surface (S12) can be tilted based on a surface perpendicular to the optical axis direction. The eleventh surface (S11) and the twelfth surface (S12) can form a certain angle with a surface perpendicular to the optical axis direction. That is, the straight line connecting the end points of the effective diameters of the eleventh surface (S11) and the twelfth surface (S12) can form a certain angle with a surface perpendicular to the optical axis direction. The eleventh surface (S11) can be tilted to face the first region (a1) based on the surface perpendicular to the optical axis direction. That is, in FIG. 9, the eleventh surface (S11) can be tilted counterclockwise based on the surface perpendicular to the optical axis direction. The twelfth surface (S12) can be tilted to face the second region (a2) based on the surface perpendicular to the optical axis direction. That is, in FIG. 9, the twelfth surface (S12) can be tilted clockwise with respect to a surface perpendicular to the optical axis direction. The eleventh surface (S11) and the twelfth surface (S12) can be tilted in opposite directions with respect to a surface perpendicular to the optical axis direction. The eleventh surface (S11) can be tilted 9° to 9.6° with respect to a surface perpendicular to the optical axis direction. For example, the eleventh surface (S11) can be tilted 9.35° with respect to a surface perpendicular to the optical axis direction. The twelfth surface (S12) can be tilted 10.5° to 11.1° with respect to a surface perpendicular to the optical axis direction. For example, the twelfth surface (S12) can be tilted 10.827° with respect to a surface perpendicular to the optical axis direction. In this case, the Fnumber may be 107225, the Fov (Field of view) may be 30, the EFL (Effective focal length) may be 8.5112, and the TTL (Through-The-Lens) may be 10.9. The eleventh surface (S11) may be tilted 9 to 9.6 degrees relative to the plane perpendicular to the optical axis direction, and the twelfth surface (S12) may be tilted 10.5 to 11.1 degrees relative to the plane perpendicular to the optical axis direction, thereby securing the resolution of the projector device and the light incidence angle of the optical modulator.Accordingly, the area where light enters the projection lens unit and the area where light exits from the projection lens unit can be separated, and the lighting system and imaging system of the projector device can be unified into a single optical system.

[0209] Referring to FIG. 14, the projection lens unit (230) may include first to sixth lenses (L1, L2, L3, L4, L5, L6) sequentially arranged from the light source unit (220) side to the light modulator (240) side. The first lens (L1) may include a first surface (S1) adjacent to the light source unit (220) and a second surface (S2) spaced apart from the light source unit (220). The second lens (L2) may include a third surface (S3) adjacent to the light source unit (220) and a fourth surface (S4) spaced apart from the light source unit (220). The third lens (L3) may include a fifth surface (S5) adjacent to the light source unit (220) and a sixth surface (S6) spaced apart from the light source unit (220). The fourth lens (L4) may include a seventh surface (S7) adjacent to the light source (220) and an eighth surface (S8) spaced apart from the light source (220). The fifth lens (L5) may include a ninth surface (S9) adjacent to the light source (220) and a tenth surface (S10) spaced apart from the light source (220). The sixth lens (L6) may include an eleventh surface (S11) adjacent to the light source (220) and a twelfth surface (S12) spaced apart from the light source (220).

[0210] Tables 1 to 4 show the optical characteristics of the project device according to the embodiment of FIG. 14.

[0211] Table 1 shows the characteristics of each surface of a plurality of lenses of the project device according to the embodiment of FIG. 14.

[0212] SurfaceRadiusThicknessSemi-ApertureeffectivediameterL1S13.8461.2992.5005.000S2-10.0540.79 82.3754.750L2S34.9200.3001.9703.941S41.5591.6701.7483.496L3S5-3.0940.8391.9313.863S6-1.019 0.1002.0534.106L4S75.0720.3002.4724.944S81.1790.8162.5555.111L5S9-13.7821.0003.7057.411S1 0-6.3321.8692.7825.563L6S11INF1.0092.8195.638S12-16.8281.0003.7847.567Image0.0002.3724.745

[0213] Table 2 shows the aspherical coefficients of multiple lenses of the projector device according to the embodiment of FIG. 14.

[0214] L1L2L3L4L5L6ImageS1S2S3S4S5S6S7S8S9S10S11S12Y3.845985-10.05364.9201231.559057-3.0941-1.019185.071549581.178675-13.7817886-6.33218291INF-16.82802432K-0.80522-74.4121-42.6247-2.23225-5.97682-5.48106-19.8566792-9.665250.32895799A2.34E-036.16E-032.89E-021.46E-02-2.24E-02-9.20E-02-5.50E-02-6.67E-021.13E-03B-1.26E-03-2.36E-04-3.50E-02-2.67E-033.01E-037.33E-024.74E-024.56E-02-4.92E-04C1.72E-03-1.06E-032.72E-02-5.41E-036.79E-03-4.91E-02-2.99E-02-2.68E-022.13E-04D-1.22E-039.05E-04-1.59E-021.22E-02-5.68E-032.60E-021.28E-021.11E-02-4.98E-05E5.20E-04-4.11E-046.66E-03-1.13E-022.88E-03-9.92E-03-3.79E-03-3.21E-036.58E-06F-1.37E-041.13E-04-1.92E-035.92E-03-8.82E-042.65E-037.62E-046.25E-04-4.82E-07G2.17E-05-1.83E-053.55E-04-1.84E-031.51E-04-4.64E-04-9.92E-05-7.81E-051.79E-08H-1.90E-061.61E-06-3.76E-053.18E-04-1.33E-054.66E-057.52E-065.63E-06-2.63E-10J7.03E-08-5.84E-081.72E-06-2.34E-054.65E-07-2.01E-06-2.51E-07-1.77E-070.00E+00Decenter(mm)1.140248057-1.4993784590.0192991Tilt(degree)9.356189845-10.82744688-6.552962.

[0215] Table 3 shows the refractive power, focal length, curvature, Abbe number, center thickness, airgap (the gap between lenses), etc. of multiple lenses of the projector device according to the embodiment of FIG. 14.

[0216] Lens datavaluePowervalueL10.2537L2-0.3589L30.4108L4-0.3488L50.0826L60.0543ShapeS1(S2)S3(S4(S5)S6)S7(S8(S9)S10)S11|S12)Focal LengthEFL(f)8.6217f13.9412f2-2.7865f32.4344f4-2.8668f512.0993f618.4087Optical DistanceTTL(TL)11.0000RadiusS13.8460S2-10.0536S34.9201S41.5591S5-3.0941S6-1.0192S75.0715S81.1787S9-13.7818S10-6.3322S11INFS12-16.8280CenterThicknessCT11.2989CT20.3000CT30.8389CT40.3005CT51.0000CT61.0089Airgap(Thickness)T120.7975T231.6704T340.1000T450.8161T561.8687EdgeThicknessET10.2890ET20.9443ET30.3000ET40.3000ET50.8919ET60.8428F-numberF#1.7346Abbe-numberL149.6668L223.7848L356.0000L450.7402L533.7087L635.3485Refractive indexn11.7318n21.8467n31.5442n41.5484n51.9043n61.9087FOV(Angle)FOV30.0000EPDEPD5.0000BFL(필터 포함)BFL_include1.0000L1S1 ~L7S2TD10.0000Image HeightImgH2.3725Stop~L7S2SD10.0000CurvatureS10.2600114S2-0.09946678S30.20324696S40.64141338S5-0.32319585S6-0.98118026S70.19717839S80.84841055S9-0.07255952S10-0.15792342S110S12-0.05942468

[0217] f1 to f6 may represent the focal lengths of the first to sixth lenses, respectively. CT1 to CT6 may represent the center thicknesses of the first to sixth lenses, respectively. ET1 to ET6 may represent the edge thicknesses of the first to sixth lenses, respectively.

[0218] Table 4 shows sag data of multiple lenses of the project device according to the embodiment of FIG. 14.

[0219] thicknessY(높이mm)1-22-33-44-55-66-77-88-9L1AirL2AirL3AirL4Air00.0000(0.0005)0.00000.00000.00000.00000.00000.00000.10.0013(0.0020)0.00100.0032(0.0016)(0.0049)0.00100.00420.20.0052(0.0044)0.00400.0128(0.0065)(0.0190)0.00380.01590.30.0117(0.0076)0.00900.0287(0.0146)(0.0412)0.00830.03340.40.0209(0.0115)0.01590.0507(0.0259)(0.0703)0.01410.05470.50.0327(0.0161)0.02450.0786(0.0405)(0.1052)0.02080.07800.60.0471(0.0211)0.03470.1123(0.0584)(0.1452)0.02810.10210.70.0643(0.0265)0.04630.1515(0.0795)(0.1896)0.03560.12600.80.0842(0.0320)0.05900.1960(0.1037)(0.2382)0.04310.14900.90.1069(0.0375)0.07270.2454(0.1310)(0.2905)0.05040.170610.1324(0.0430)0.08700.2997(0.1609)(0.3464)0.05740.19041.10.1609(0.0484)0.10170.3587(0.1932)(0.4056)0.06380.20811.20.1923(0.0534)0.11660.4223(0.2271)(0.4675)0.06950.22321.30.2268(0.0580)0.13120.4903(0.2619)(0.5318)0.07420.23561.40.2644(0.0622)0.14540.5627(0.2965)(0.5976)0.07770.24471.50.3053(0.0658)0.15890.6395(0.3298)(0.6640)0.07970.25031.60.3497(0.0688)0.17130.7208(0.3609)(0.7297)0.07990.25211.70.3975(0.0711)0.18250.8079(0.3891)(0.7932)0.07810.24951.80.4491(0.0726)0.19250.9016(0.4148)(0.8533)0.07410.24231.90.5047(0.0732)0.2017(0.4395)(0.9094)0.06770.230020.5 644(0.0728)0.2108(0.4653)(0.9610)0.05900.21232.10.6287(0.0715)(1.0066)0.04810.18872.20.6980(0.0688)0.03570.15902.30.7726(0.0636)0.02310.12282.40.85320.01260.08092.50.94180.00310.03432.6(0.0208).

[0220] Figure 15 is a schematic diagram of the inside of a project device according to another embodiment.

[0221] Referring to FIG. 15, the projection lens unit (230) of the projector device may include first to fifth lenses (L1, L2, L3, L4, L5) sequentially arranged from the light source unit (220) side to the light modulator (240) side. The first lens (L1) may include a first surface (S1) adjacent to the light source unit (220) and a second surface (S2) spaced apart from the light source unit (220). The second lens (L2) may include a third surface (S3) adjacent to the light source unit (220) and a fourth surface (S4) spaced apart from the light source unit (220). The third lens (L3) may include a fifth surface (S5) adjacent to the light source unit (220) and a sixth surface (S6) spaced apart from the light source unit (220). The fourth lens (L4) may include a seventh surface (S7) adjacent to the light source (220) and an eighth surface (S8) spaced apart from the light source (220). The fifth lens (L5) may include a ninth surface (S9) adjacent to the light source (220) and a tenth surface (S10) spaced apart from the light source (220).

[0222] Tables 5 to 8 show data of the project device according to the embodiment of Fig. 15.

[0223] Table 5 shows the characteristics of each surface of a plurality of lenses of the project device according to the embodiment of FIG. 15.

[0224] SurfaceRadiusThicknessSemi-ApertureeffectivediameterLens1S13.3351.6992.5055.010S2-5.3420.6 042.5865.172Lens2S32.3850.3731.9703.939S40.9901.3731.5713.141Lens3S5-12.0180.4281.7353.471S 6-4.3991.0491.6703.340Lens4S7-5.4622.4862.2264.452S8-3.2580.1002.4654.930Lens5S9INF0.8872. 1734.346S10INF0.4152.0584.115CoverS11INF0.4002.0054.010S12INF0.1851.9743.947Image1.8803.760

[0225] Table 6 shows the aspherical coefficients of multiple lenses of the projector device according to the embodiment of FIG. 15.

[0226] L1L2L3L4L5ImageS1S2S3S4S5S6S7S8S9S10Y3.3349-5.34212.384790.98969-12.0177-4.39938-5.4623781-3.2575K-2.16482-24.5019-2.03683-1.8664437.0828-22.3592-8.17192020.26476A6.84E-036.46E-03-1.14E-01-8.88E-022.97E-02-1.54E-03-5.03E-03-6.93E-03B-1.43E-03-2.78E-036.10E-029.53E-021.71E-023.36E-021.65E-041.31E-03C1.72E-031.15E-03-2.29E-02-7.14E-02-4.90E-03-1.28E-02-5.44E-05-9.78E-05D-1.35E-03-6.26E-046.38E-035.87E-025.81E-046.36E-032.10E-053.16E-06E6.00E-042.91E-04-1.18E-03-4.20E-02-3.79E-05-2.37E-03-2.13E-06-5.49E-08F-1.58E-04-8.79E-051.32E-042.07E-021.46E-064.77E-049.95E-085.49E-10G2.45E-051.56E-05-8.67E-06-6.02E-03-3.34E-08-5.16E-05-2.45E-09-3.19E-12H-2.06E-06-1.47E-062.99E-079.04E-044.18E-102.90E-063.10E-111.00E-14J7.27E-085.74E-08-4.15E-09-5.40E-05-2.21E-12-6.79E-08-1.60E-13-1.29E-17Decenter(mm)0.410.1135Tilt(degree)10.5031-6.5943-6.5943

[0227] Table 7 shows the refractive power, focal length, curvature, Abbe number, center thickness, airgap (the gap between lenses), etc. of multiple lenses of the projector device according to the embodiment of FIG. 15.

[0228] Lens datavaluePowervalueL10.2901L2-0.3892L30.1306L40.1092L50.0000ShapeS1(S2)S3(S4(S5(S6)S7)S8)S9|S10|Focal LengthEFL(f)8.5857f13.4475f2-2.5691f37.6598f49.1551f5infinityOptical DistanceTTL(TL)10.0000RadiusS13.3349S2-5.3421S32.3848S40.9897S5-12.0177S6-4.3994S7-5.4624S8-3 .2575S9infinityS10infinityCenterThicknessCT11.6993CT20.3733CT30.4283CT42.4855CT50.8873Airgap( Thickness)T120.6042T231.3734T341.0487T450.1000EdgeThicknessET10.3000ET20.9475ET30.3000ET41.65 44ET51.3000F-numberF#1.7137Abbe-numberL159.4419L223.7848L328.1668L445.1569L555.4597Refractive indexn11.6427n21.8467n31.8762n41.6136n51.6968FOV(Angle)FOV24.0000EPDEPD5.0000BFL(include filter)BFL_include1.0000L1S1 ~L7S2TD9.0000Image HeightImgH1.8700Stop~L7S2SD9.0000CurvatureC10.29985924C2-0.1871922C30.41 932354C41.01041706C5-0.0832109C6-0.2273047C7-0.1830704C8-0.3069836C90C100

[0229] f1 to f5 may represent the focal lengths of the first to fifth lenses, respectively. CT1 to CT5 may represent the center thicknesses of the first to fifth lenses, respectively. ET1 to ET5 may represent the edge thicknesses of the first to fifth lenses, respectively.

[0230] Table 8 shows sag data of multiple lenses of the project device according to the embodiment of FIG. 15.

[0231] thicknessY(높이mm)1-22-33-44-55-66-77-88-9L1AirL2AirL3AirL4Air00.00000.00000.00000.00000.00000.00000.00000.00000.10.0015(0.0009)0.00210.0050(0.0004)(0.0011)(0.0009)(0.0015)0.20.0060(0.0037)0.00820.0199(0.0016)(0.0045)(0.0037)(0.0062)0.30.0135(0.0082)0.01790.0439(0.0035)(0.0100)(0.0082)(0.0139)0.40.0241(0.0144)0.03060.0762(0.0059)(0.0174)(0.0146)(0.0249)0.50.0377(0.0219)0.04560.1157(0.0085)(0.0263)(0.0229)(0.0391)0.60.0543(0.0308)0.06210.1613(0.0108)(0.0363)(0.0329)(0.0567)0.70.0741(0.0407)0.07930.2123(0.0122)(0.0467)(0.0448)(0.0779)0.80.0970(0.0515)0.09670.2680(0.0120)(0.0565)(0.0585)(0.1027)0.90.1231(0.0631)0.11400.3283(0.0091)(0.0645)(0.0741)(0.1314)10.1524(0.0752)0.13080.3932(0.0024)(0.0692)(0.0915)(0.1641)1.10.1851(0.0878)0.14720.46330.0095(0.0685)(0.1108)(0.2010)1.20.2210(0.1009)0.16320.53950.0277(0.0601)(0.1321)(0.2423)1.30.2603(0.1142)0.17940.62370.0538(0.0417)(0.1553)(0.2882)1.40.3029(0.1279)0.19600.71870.0889(0.0106)(0.1805)(0.3390)1.50.3490(0.1418)0.21380.82760.13390.0353(0.2078)(0.3948)1.60.3985(0.1560)0.23370.95030.18920.0975(0.2371)(0.4560)1.70.4514(0.1706)0.25660.25400.1759(0.2685)(0.5228)1.80.5077(0.1856)0.28330.3260(0.3020)(0.5957)1.90.5671(0.2012)0.3145(0.3374)(0.6 751)20.6296(0.2176)0.3503(0.3746)(0.7618)2.10.6946(0.2350)(0.4135)(0.8564)2.20.7617(0.2537)(0.4537)(0.9603)2.30.8300(0.2744)(0.4948)(1.0750)2.40.8977(0.2978)(1.2031)2.50.9627(0.3247)(1.3484)2.6(0.3495).

[0232] Fig. 16 is a schematic diagram of the inside of a project device according to another embodiment.

[0233] Referring to FIG. 16, the projection lens unit (230) of the projector device may include first to fifth lenses (L1, L2, L3, L4, L5) sequentially arranged from the light source unit (220) side to the light modulator (240) side. The first lens (L1) may include a first surface (S1) adjacent to the light source unit (220) and a second surface (S2) spaced apart from the light source unit (220). The second lens (L2) may include a third surface (S3) adjacent to the light source unit (220) and a fourth surface (S4) spaced apart from the light source unit (220). The third lens (L3) may include a fifth surface (S5) adjacent to the light source unit (220) and a sixth surface (S6) spaced apart from the light source unit (220). The fourth lens (L4) may include a seventh surface (S7) adjacent to the light source (220) and an eighth surface (S8) spaced apart from the light source (220). The fifth lens (L5) may include a ninth surface (S9) adjacent to the light source (220) and a tenth surface (S10) spaced apart from the light source (220).

[0234] Tables 9 to 12 show data of the project device according to the embodiment of Fig. 16.

[0235] Table 9 shows the characteristics of each surface of a plurality of lenses of the project device according to the embodiment of FIG. 16.

[0236] SurfaceRadiusThicknessSemi-ApertureeffectivediameterLens1S111.7821.4033.0006.000S2-3.0150.6952.9005.800Lens2S36.8770.4122.7765.551S41.2131.0822.4604.919Lens3S 56.3641.2242.5175.034S6-6.3791.8502.5125.023Lens4S7-11.6241.2005.08510.169S8-3. 7890.5022.7145.428Lens5S9INF1.1822.6165.233S10INF0.9502.8185.636Image1.8233.645

[0237] Table 10 shows the aspherical coefficients of multiple lenses of the projector device according to the embodiment of FIG. 16.

[0238] L1L2L3L4L5ImageS1S2S3S4S5S6S7S8S9S10Y11.7818-3.014996.877261.213296.36367-6.37913-11.624101-3.78918INFINFK8.9994-8.727361.95453-3.041731.90526-34.53-26.589202-4.21721A-5.06E-035.20E-036.38E-033.74E-02-1.61E-02-1.80E-02-1.00E-03-3.64E-03B1.08E-03-2.19E-03-4.94E-03-2.06E-028.22E-037.90E-039.64E-05-3.04E-03C-3.67E-046.26E-042.20E-031.07E-02-3.77E-03-2.68E-03-5.30E-063.47E-03D8.46E-05-9.92E-05-6.14E-04-3.88E-031.67E-036.98E-041.64E-07-2.14E-03E-1.12E-052.19E-068.88E-058.25E-04-5.06E-04-7.80E-05-2.63E-098.12E-04F7.34E-072.48E-06-4.02E-06-8.82E-059.25E-05-1.16E-052.04E-11-1.91E-04G-1.06E-08-4.90E-07-4.75E-072.05E-06-9.50E-064.97E-06-4.86E-142.72E-05H-8.97E-103.99E-086.40E-083.92E-074.79E-07-5.99E-07-2.18E-16-2.15E-06J2.44E-11-1.23E-09-2.14E-09-2.47E-08-8.28E-092.53E-081.02E-187.20E-08Decenter(mm)2.601057937-0.202788-0.010126838Tilt(degree)13.9344476-5.124084579-6.684041253

[0239] Table 11 shows the refractive power, focal length, curvature, Abbe number, center thickness, airgap (the gap between lenses), etc. of multiple lenses of the projector device according to the embodiment of FIG. 16.

[0240] Lens datavaluePowervalueL10.3433L2-0.5788L30.2136L40.1118L50.0000ShapeS1(S2)S3(S4(S5(S6)S7)S8)S9|S10|Focal LengthEFL(f)6.7528f12.9128f2-1.7278f34.6810f48.9438Optical DistanceTTL(TL)10.5000RadiusS111.7818S2-3.0150S36.8773S41.2133S56.3637S6-6.3791S7-11.6241S 8-3.7892S9INFS10INFCenterThicknessCT11.4025CT20.4122CT31.2240CT41.2000CT51.1819Airgap(Thick ness)T120.6952T231.0818T341.8500T450.5024EdgeThicknessET10.5000ET21.3730ET30.3500ET41.0690 ET51.9726F-numberF#1.1255Abbe-numberL139.1811L223.8300L355.5058L436.0897L539.0117Refractive indexn11.8398n21.8451n31.6961n41.5779n51.8424FOV(Angle)FOV30.0000EPDEPD6.0000BFL(include filter)BFL_include0.8300L1S1 ~L7S2TD9.5500Image HeightImgH1.8225Stop~L7S2SD9.5500CurvatureC10.08487674C2-0.3316756C30.14 540679C40.82420532C50.15714215C6-0.1567611C7-0.0860282C8-0.263909C90C100

[0241] f1 to f5 may represent the focal lengths of the first to fifth lenses, respectively. CT1 to CT5 may represent the center thicknesses of the first to fifth lenses, respectively. ET1 to ET5 may represent the edge thicknesses of the first to fifth lenses, respectively.

[0242] Table 12 shows sag data of multiple lenses of the project device according to the embodiment of FIG. 16.

[0243] thicknessY(높이mm)1-22-33-44-55-66-7L1AirL2AirL3Air00.00000.00000.00000.00000.00000.00000.10.0004(0.0017)0.00070.00410.0008(0.0008)0.20.0017(0.0066)0.00290.01630.0031(0.0031)0.30.0038(0.0146)0.00660.03630.0070(0.0071)0.40.0067(0.0256)0.01180.06350.0122(0.0126)0.50.0104(0.0392)0.01860.09740.0188(0.0197)0.60.0148(0.0551)0.02700.13740.0267(0.0284)0.70.0199(0.0732)0.03700.18300.0358(0.0387)0.80.0256(0.0930)0.04860.23360.0460(0.0506)0.90.0320(0.1144)0.06200.28880.0572(0.0640)10.0390(0.1370)0.07700.34820.0697(0.0789)1.10.0464(0.1607)0.09370.41170.0832(0.0952)1.20.0544(0.1854)0.11200.47890.0981(0.1128)1.30.0628(0.2108)0.13200.54960.1144(0.1316)1.40.0716(0.2368)0.15370.62370.1325(0.1514)1.50.0807(0.2634)0.17690.70080.1526(0.1719)1.60.0901(0.2903)0.20160.78060.1750(0.1929)1.70.0998(0.3176)0.22770.86280.2001(0.2139)1.80.1098(0.3451)0.25510.94720.2285(0.2346)1.90.1201(0.3728)0.28371.03380.2604(0.2545)20.1306(0.4004)0.31331.12240.2965(0.2728)2.10.1415(0.4280)0.34401.21310.3374(0.2888)2.20.1527(0.4553)0.37571.30550.3839(0.3012)2.30.1644(0.4822)0.40881.39880.4363(0.3091)2.40.1768(0.5083)0.44331.49220.4943(0.3116)2.50.1901(0.5334) 0.47941.58510.5554(0.3088)2.60.2048(0.5568)0.51700.6154(0.3014)2.70.2216(0.5775)0.55612.80.2416(0.5939)0.59722.90.2664(0.6034)30.2979.

[0244] Although the above description focuses on examples, these are merely examples and are not intended to limit the examples. Those skilled in the art will appreciate that various modifications and applications not exemplified above are possible without departing from the essential characteristics of the present examples. For example, each component specifically shown in the examples can be modified and implemented. In addition, differences related to such modifications and applications should be interpreted as being included within the scope of the embodiments set forth in the appended claims.

Claims

1. A light source that emits light; A projection lens unit that transmits light emitted from the light source unit; and It includes a light modulator that modulates and reflects light passing through the above projection lens unit, The above projection lens unit includes a plurality of lenses, The above optical modulator comprises a substrate and a plurality of mirrors arranged on the substrate, The plurality of lenses of the above projection lens unit include at least three lenses aligned in the optical axis direction, The above substrate is tilted with respect to a plane perpendicular to the optical axis direction, A projector device in which a surface of a lens adjacent to the optical modulator among the plurality of lenses of the above projection lens unit is convex toward the optical modulator.

2. In paragraph 1, A projector device including the plurality of lenses, the first lens to the seventh lens sequentially arranged from the light source side to the light modulator side.

3. In paragraph 2, The sixth lens includes a first outer surface adjacent to the light source and a second outer surface spaced apart from the light source, A projector device wherein the seventh lens includes a third outer surface adjacent to the light source and a fourth outer surface spaced apart from the light source.

4. In paragraph 3, The first and fourth outer surfaces do not have circular symmetry with respect to the optical axis. The third outer side surface and the fourth outer side surface are a tilted projector device based on a plane perpendicular to the optical axis direction.

5. In paragraph 4, A project device wherein the center of the first outer surface and the center of the fourth outer surface are not on the optical axis, and the center of the second outer surface and the center of the third outer surface are on the optical axis.

6. In paragraph 3, Including an optical axis passing through the center of the first lens to the third lens of the above projection lens unit, A project device in which the center of the first outer surface and the center of the fourth outer surface are spaced apart from the optical axis by a certain distance in a direction perpendicular to the optical axis.

7. In paragraph 3, Including an optical axis passing through the center of the first lens to the third lens of the above projection lens unit, The center of the first outer surface, the center of the third outer surface, and the center of the fourth outer surface are spaced apart from the optical axis by a certain distance in a direction perpendicular to the optical axis, The third outer side surface and the fourth outer side surface are a tilted projector device based on a plane perpendicular to the optical axis direction.

8. In paragraph 4, A projector device wherein the difference between the angle at which the fourth outer surface is tilted relative to a plane perpendicular to the optical axis direction and the angle at which the substrate is tilted relative to a plane perpendicular to the optical axis direction is -5˚ to +5˚.

9. In paragraph 1, A projector device in which the substrate is tilted at an angle of 6.5˚ to 7˚ with respect to a plane perpendicular to the optical axis direction.

10. In paragraph 1, A projector device wherein the angle formed by the mirror with respect to the substrate is 16.5˚ to 17.5˚.

Images