KR20150084603A - Near to eye display and wearable device having the same - Google Patents

Near to eye display and wearable device having the same Download PDF

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Publication number
KR20150084603A
KR20150084603A KR1020140004761A KR20140004761A KR20150084603A KR 20150084603 A KR20150084603 A KR 20150084603A KR 1020140004761 A KR1020140004761 A KR 1020140004761A KR 20140004761 A KR20140004761 A KR 20140004761A KR 20150084603 A KR20150084603 A KR 20150084603A
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KR
South Korea
Prior art keywords
light
user
eye
light source
concave mirror
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KR1020140004761A
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Korean (ko)
Inventor
김관형
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엘지전자 주식회사
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Priority to KR1020140004761A priority Critical patent/KR20150084603A/en
Publication of KR20150084603A publication Critical patent/KR20150084603A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0172—Head mounted characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/163—Wearable computers, e.g. on a belt
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
    • G02B2027/0136—Head-up displays characterised by optical features comprising binocular systems with a single image source for both eyes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/014—Head-up displays characterised by optical features comprising information/image processing systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B2027/0178—Eyeglass type
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G02B2027/0187—Display position adjusting means not related to the information to be displayed slaved to motion of at least a part of the body of the user, e.g. head, eye

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

A near to eye display proposed in the present invention includes a plurality of pixels forming a display panel. The pixel includes: a light source; a concave mirror which is arranged with a concave plane toward eyes of a user at a position separated from the light source in order to change the light generated in the light source into a parallel light toward the eye of the user by reflecting the light generated in the light source; a reflection mirror which is arranged at an opposite side of the concave mirror around the light source in order to reflect the light not heading for the concave mirror of the light generated from the light source and then making the reflected light be heading to the concave mirror; and a penetrating part which is formed with a previously established refractive index at a concave part and an opposite part thereof of the concave mirror in order for the light incident from the outside to pass through the concave mirror and to be heading to the eye of the user. By this configuration, the light generated in the light source can be focused to the eye of the user, and the light generated in the outside can be delivered to the user, and thus, near to display of see-through can be realized.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an eye proximity display and a wearable device having the eye proximity display,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wearable type terminal used in a human body, such as a smart glass type device or a head mounted display (HMD) ≪ / RTI >

A terminal can be divided into a mobile / portable terminal and a stationary terminal depending on whether the terminal is movable. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

In recent years, a wearable device (Wearable Device) which can be worn on the human body has come out of the portable terminal, and a glass type terminal and a Smart Watch have been used for wearable devices This is an example.

When a wearable device such as a glass-type terminal or a head-mounted display is worn on a wearer's head, a near-to-eye display of the wearable device is naturally placed in front of the user's eyes to output an image. The user can obtain desired information through the image output from the eye proximity display, and visually confirm the result input through the input section in the eye proximity display.

The eye proximity display mounted on the wearable device differs from a display such as a monitor or a TV in that it is disposed at a position within 50 mm from the user's eyes. As a result, there is a limit to how a display technology such as a monitor or a TV is directly applied to a display of a wearable device.

Known eye proximity display structures include prism and concave mirror and light guide structure. However, a separate projection system is indispensable for both structures, and it is disadvantageous to increase the thickness of the prism in order to expand the field of view (FOV).

Accordingly, it can be considered for a wearable device that complements the disadvantages present in conventional eye proximity displays and is an eye proximity display optimized for an eye proximity environment and the like.

One object of the present invention is to propose a new eye proximity display of a structure different from the conventional one.

Another object of the present invention is to provide an eye proximity display which can realize a target visual range in a range of a relatively thin thickness rather than a conventional structure, without requiring a separate projection system.

According to an aspect of the present invention, there is provided an eye proximity display comprising a plurality of pixels arranged in a matrix to form a display panel, the pixels including a light source, light generated from the light source, A concave mirror disposed so as to face a concave surface at a position spaced apart from the light source so as to reflect the parallel light toward the user's eye; A reflecting mirror disposed adjacent to the light source to reflect the light to the concave mirror and to direct the transmission direction while the light incident from the outside passes through the concave mirror toward the user's eye, And a transmissive portion formed at a predetermined refractive index on the opposite side of the concave portion.

According to an example of the present invention, the reflective mirror may be disposed between the light source and the user's eye when the eye proximity display is worn.

According to another embodiment of the present invention, the transmissive portion includes a first transmissive portion formed of transparent plastic or glass for transmitting light and filling a space between the light source and the concave mirror, (N) of n-0.1? N? N + 0.1 with respect to the refractive index (n) of the first transmissive portion so as to maintain the transmission direction of light incident from the outside toward the user's eye lt; RTI ID = 0.0 > n '). < / RTI >

According to another embodiment of the present invention, the eye proximity display is formed on a concave surface of the concave mirror, reflects incident light from the light source, reflects light incident from the outside, Lt; RTI ID = 0.0 > value. ≪ / RTI >

The transmittance of the coating layer may be 40 to 60%.

The coating layer may be a polarization selective coating layer that reflects only specific polarized light and transmits the other.

According to another example of the present invention, the pixels may be arranged on a curved surface centered on the user's eyes so as to face the user's eyes.

According to another example of the present invention, the pixels are arranged in a plane to form a flat panel display panel, and each of the pixels may be arranged to be inclined toward the user's eyes.

The pixels may be disposed such that the central axis of the reflective mirror is tilted in a direction toward the user ' s eye.

Further, in order to solve the above problems, the present invention discloses a wearable device having an eye proximity display. A wearable device includes a frame portion formed to be wearable on a head portion of a human body and an eye proximity display mounted on the frame and arranged to face a user's eye when worn on the human body and displaying visual information, The display comprises a plurality of pixels arranged to form a display panel, the pixels comprising a light source, a light source for reflecting the light generated by the light source and converting the light into parallel light directed to the user & A reflecting mirror disposed adjacent to the light source to reflect light directed from the light source toward the concave mirror and to direct light toward the concave mirror; The direction in which the incident light passes through the concave mirror is referred to as the user's eye And a transmissive portion formed at a predetermined refractive index on the opposite side of the concave portion of the concave mirror.

According to the present invention having the above-described structure, the eye proximity display can make the light generated from the light source incident on the eyes of the user of the wearable device in parallel in the eye close-up environment. Accordingly, the user of the wearable device can easily focus on the light, so that the visual information outputted from the eye proximity display can be recognized as a clear image quality.

Also, in the present invention, the light generated from the light source is reflected by the concave mirror and is incident on the user's eye, and the light incident from the outside can be incident on the user's eye through the display panel (see-through). Accordingly, the user of the wearable device equipped with the eye proximity display can recognize both the screen information output from the display panel and the visual information about the external environment according to the selection.

Further, since the concave mirror is disposed between the first transmissive portion and the second transmissive portion, the present invention can reduce the possibility of damage due to scratches and the like because the concave mirror is not exposed to the outside. It is also possible to reduce the overall thickness and weight of the eye proximity display and to significantly reduce the number of components, by removing the separate projection system and lens, which is pointed out as a problem in conventional eye proximity displays. This effect ultimately reduces the size and weight of the wearable device to which the eye proximity display is to be mounted, and allows the number of parts to be saved.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram of a wearable device to which an eye proximity display of the present invention can be mounted.
2 is a perspective view showing an example of a wearable device to which the eye proximity display of the present invention can be mounted;
3 is a conceptual diagram showing pixels of an eye proximity display according to an embodiment of the present invention;
4 is a conceptual diagram for explaining how a plurality of pixels are arranged to form a curved display panel;
5 is a conceptual diagram for explaining how a plurality of pixels are arranged to form a flat panel display panel;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, an eye proximity display disclosed herein and a wearable device having the same, with the same or similar reference numerals being assigned to the same or similar components, . The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In this specification, the terms "comprises" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The wearable device described in this specification may include a glass-type terminal (smart glass), a head mounted display (HMD), and the like. However, the configuration according to the embodiments described herein may be applied to any wearable device having an eye proximity display disposed at a close position from the eye when the device is worn on the human body, except when applicable to a glass-type terminal or a head- It will be readily apparent to those skilled in the art that the present invention can be applied to other devices.

1 is a block diagram of a wearable device to which an eye proximity display of the present invention can be mounted.

The wearable device 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, and a power supply unit 190 ), And the like. The components shown in FIG. 1 are not essential for implementing a wearable device, so that the wearable device described herein may have more or fewer components than the components listed above.

More specifically, the wireless communication unit 110 among the above-described components can communicate with the wearable device 100 and the wireless communication system, between the wearable device 100 and the other wearable device 100, or between the wearable device 100 and the wearable device 100, May include one or more modules that enable wireless communication between the network in which the device (100, or external server) is located.

The wireless communication unit 110 may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115 .

The input unit 120 includes a camera 121 or an image input unit for inputting a video signal, a microphone 122 for inputting an audio signal, an audio input unit, a user input unit 123 for receiving information from a user A touch key, a mechanical key, and the like). The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The sensing unit 140 may include at least one sensor for sensing at least one of the information in the wearable device, the environment information surrounding the wearable device, and the user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, An optical sensor (e.g., a camera 121, a microphone 122, a battery gage, an environmental sensor (e.g., a barometer, a hygrometer, a thermometer, The wearable device disclosed herein may include at least one of a sensor, a gas sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, Information sensed by at least two of the sensors Can be used in combination.

The output unit 150 includes at least one of a display unit 151, an acoustic output unit 152, a haptic tip module 153, and a light output unit 154 to generate an output related to visual, auditory, can do. The display unit 151 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. Such a touch screen may function as a user input unit 123 that provides an input interface between the wearable device 100 and a user and may provide an output interface between the wearable device 100 and a user.

The interface unit 160 serves as a channel for connecting various types of external devices connected to the wearable device 100. The interface unit 160 is connected to a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the wearable device 100, corresponding to the connection of the external device to the interface unit 160, the wearable device 100 can perform appropriate control related to the connected external device.

The memory 170 may store a plurality of application programs (application programs or applications) driven by the wearable device 100, data for operation of the wearable device 100, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least some of these applications may reside on the wearable device 100 from the time of shipment to the basic functionality of the wearable device 100 (e.g., phone call incoming, outgoing, message receiving, origination) . On the other hand, the application program is stored in the memory 170, installed on the wearable device 100, and can be driven by the control unit 180 to perform the operation (or function) of the wearable device.

In addition to the operations associated with the application program, the control unit 180 typically controls the overall operation of the wearable device 100. [ The control unit 180 may process or process signals, data, information, and the like input or output through the above-mentioned components, or may drive an application program stored in the memory 170 to provide or process appropriate information or functions to the user.

In addition, the controller 180 may control at least some of the components illustrated in FIG. 1 in order to drive an application program stored in the memory 170. FIG. Furthermore, the control unit 180 may operate at least two or more of the components included in the wearable device 100 in combination with each other for driving the application program.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to the components included in the wearable device 100. The power supply unit 190 includes a battery, which may be an internal battery or a replaceable battery.

At least some of the components may operate in cooperation with each other to implement a method of operation, control, or control of the wearable device in accordance with various embodiments described below. In addition, the operation, control, or control method of the wearable device may be implemented on the wearable device by driving at least one application program stored in the memory 170. [

Hereinafter, a specific structure of the wearable device will be described.

2 is a perspective view showing an example of a wearable device to which the eye proximity display of the present invention can be mounted.

The wearable device shown is a glass-type terminal 200, and the glass-type terminal 200 is configured to be worn on the head of a human body, and a frame part (case, housing, etc.) for the wearable device can be provided. The frame portion may be formed of a flexible material to facilitate wearing. In this figure, it is illustrated that the frame portion includes a first frame 201 and a second frame 202 of different materials.

The frame portion is supported on the head portion, and a space for mounting various components is provided. As shown in the figure, electronic parts such as a control module 280, an audio output module 252 and the like may be mounted on the frame part. Further, the display portion 251 covering at least one of the left and right eyes may be detachably mounted to the frame portion.

The control module 280 controls various electronic components included in the glass-type terminal 200. The control module 280 can be understood as a configuration corresponding to the control unit 180 (see FIG. 1) described above. In this figure, the control module 280 is provided on the frame portion on one side of the head. However, the position of the control module 280 is not limited thereto.

The display unit 251 may be implemented as a head mounted display (HMD). The HMD type refers to a display method that is mounted on a head and displays an image directly in front of the user's eyes. When the user wears the glass-type terminal 200, the display unit 251 may be disposed to correspond to at least one of the left and right eyes so that the user can directly provide an image in front of the user's eyes.

The display unit 251 can project an image with the user's eyes. Further, the display unit 251 may be formed to be transmissive so that the user can view the projected image and the general view of the front (the range that the user views through the eyes) together.

As described above, the image output through the display unit 251 can be overlapped with the general view. The mobile terminal 400 can provide an Augmented Reality (AR) in which a virtual image is superimposed on a real image or a background and displayed as a single image using the characteristics of the display.

The camera 221 is disposed adjacent to at least one of the left eye and the right eye, and is configured to photograph a forward image. Since the camera 221 is located adjacent to the eye, the camera 221 can acquire a scene viewed by the user as an image.

Although the camera 221 is provided in the control module 280 in this figure, it is not limited thereto. The camera 221 may be installed in the frame part, or may be provided in a plurality of ways to acquire a stereoscopic image.

The glass-type terminal 200 may include user input units 223a and 223b operated to receive control commands. The user input units 223a and 223b can be employed in any tactile manner, such as a touch or a push, in a tactile manner. This figure illustrates that the frame unit and the control module 280 are provided with user input units 223a and 223b of a push and touch input method, respectively.

In addition, the glass-type mobile terminal 200 may be provided with a microphone (not shown) for receiving sound and processing it as electrical voice data and an acoustic output module 252 for outputting sound. The sound output module 252 may be configured to transmit sound in a general sound output mode or a bone conduction mode. When the sound output module 252 is implemented in a bone conduction manner, when the user wears the glass type terminal 200, the sound output module 252 is brought into close contact with the head and vibrates the skull to transmit sound.

Hereinafter, the detailed structure of the eye proximity display that can be applied to the display unit of the wearable device will be described.

3 is a conceptual diagram illustrating a pixel 351 of an eye proximity display according to an embodiment of the present invention.

The pixel 351 is a unit component forming the display panel, and a plurality of pixels 351 are arranged to form a display panel of the eye proximity display.

A light source 351a generates light for providing visual information to the user. When the user wears the wearable device, the light source 351a is placed within 50 mm from the user's eyes 30. [

The concave mirror 351b is disposed so as to be spaced apart from the light source 351a so as to reflect the light generated by the light source 351a and convert the light into parallel light directed toward the user's eyes 30. [ The concave mirror 351b is arranged so that the concave surface faces the user's eyes 30. [

In order to reflect the light generated from the light source 351a and convert it into parallel light directed toward the user's eyes 30, the cross-sectional shape of the concave mirror 351b is formed in the form of a parabola, and the light source 351a is arranged at the focal point of the parabola Ideally placed. However, in the present invention, the cross-sectional shape of the concave mirror 351b is not necessarily formed in the form of a parabola, but includes all the shapes formed in the form of a parabolic or semicircular curved surface, and the curvature of the concave mirror 351b is constant It may be, but it may not.

The reflecting mirror 351c is disposed adjacent to the light source 351a so as to reflect the light not directed to the concave mirror 351b of the light generated from the light source 351a to the concave mirror 351b. The reflective mirror 351c may be disposed between the light source 351a and the user's eye 30 on the opposite side of the concave mirror 351b with respect to the light source 351a as shown or when wearing the eye proximity display. The reflecting mirror 351c is formed to have a smaller size than the concave mirror 351b so as not to block the path of the light reflected by the concave mirror 351b or to reflect the light reflected by the concave mirror 351b again.

Since the concave mirror 351b and the reflection mirror 351c are disposed around the light source 351a, a part of the light generated by the light source 351a is incident on the concave mirror 351b and the other part is incident on the reflection mirror 351c. The light reflected by the concave mirror 351b is converted into parallel light and directed to the user's eyes 30. [ The light reflected by the reflecting mirror 351c is reflected again by the concave mirror 351b to be converted into parallel light and directed to the user's eyes 30. [

The light generated by the light source 351a spreads in all directions. Therefore, when the light generated by the light source 351a is directly incident on the user's eyes 30, it is difficult for the user to focus. However, in the present invention, the light generated by the light source 351a is not accumulated on the user's eye 30 by the light source 351a, the concave mirror 351b, and the reflection mirror 351c described above, 351b so as to be converted into parallel light, and then to be directed to the eyes 30 of the user. Accordingly, since the user looks at the light incident on the eye, it is easier to focus the light generated by the light source 351a than when the light is directly incident on the user's eye 30. [

The transmissive portions 351d and 351e are formed on the concave surface of the concave mirror 351b so as to keep the transmissive direction while the light incident from the outside passes through the concave mirror 351b in the direction toward the user's eyes 30. [ And is formed with a predetermined refractive index on the opposite surface. The transmissive portions 351d and 351e include a first transmissive portion 351d formed on the concave surface of the concave mirror 351b and a second transmissive portion 351e formed on the opposite surface thereof.

The first transmitting portion 351d is formed of transparent plastic or glass so as to transmit light, and fills a space between the light source 351a and the concave mirror 351b. The light transmitted through the first transmission portion 351d includes light generated from the light source 351a and light incident from the outside. The first transmissive portion 351d may have a refractive index (n) of 1.3 to 2.1.

The second transmissive portion 351e has a refractive index n of 0.1 to n'0 with respect to the refractive index n of the first transmissive portion 351d so as to keep the transmissive direction of the light incident from the outside toward the user's eyes 30. [ and a refractive index (n ') of n + 0.1.

Accordingly, the light incident from the outside passes through the first transmitting portion 351d and the second transmitting portion 351e, which are separated by the concave mirror 351b, while passing through the first transmitting portion 351d and the second transmitting portion 351e, 351d and the second transmitting portion 351e, the direction can be maintained in the direction toward the user's eyes 30 without significantly changing the direction.

The concave surface of the concave mirror 351b may further include a coating layer 351f. The coating layer 351f reflects the light incident from the light source 351a and adjusts the reflectance and the transmittance to a predetermined value so as to transmit the light incident from the outside. For example, the polarization selective coating layer 351f may be applied to the coating layer 351f. The polarization selective coating layer 351f is a coating layer 351f that reflects only specific polarized light and transmits the other. The transmittance can be adjusted, for example, to 40 to 60%.

The pixels 351 constituted in this manner are gathered to form a display panel. The eye proximity display to which the display panel is applied can not only transmit the light generated by the light source 351a to the user but also transmit the light incident from the outside to the user. The user can not only confirm the visual information output from the eye proximity display but also visually recognize the external environment of the wearable device to which the eye proximity display is applied so that the see-through characteristic can also be implemented.

Hereinafter, a display panel in which a plurality of pixels 351 are arranged will be described.

Fig. 4 is a conceptual diagram for explaining how a plurality of pixels 351 are arranged to form a curved display panel 350. Fig.

The pixels 351 may be arranged on a curved surface centered on the user's eyes 30 so as to face the user's eyes 30. The pixels 351 may be arranged on a curved surface centered on the user's eyes 30 to form the curved display panel 350. The curved surface centered on the user's eyes 30 does not necessarily mean the surface of the sphere centered on the user's eyes 30 but may be a curved surface whose curvature is formed by a parabolic curve or curvature , And a curved surface curved in the direction toward the user's eyes 30. [

The curved display panel 350 formed by arranging the pixels 351 on the curved surface reflects the light generated by the light source 351a toward the user's eyes 30 and the light incident from the outside is reflected by the user's eyes 30 . The parallel light reflected from the concave mirror 351b and the light incident from the outside are focused on the user's eyes 30. Thus, the present invention can extend the field of view (FOV) of the user and increase the resolution of the eye proximity display.

The number of pixels 351 arranged to form the display panel 350 may be determined by the resolution of the eye proximity display to be implemented. The number of pixels 351 arranged in the horizontal and vertical directions can be variously determined, such as 1280 x 768, 1440 x 900, and 1920 x 1080, respectively.

5 is a conceptual diagram for explaining how a plurality of pixels 451 are arranged to form a flat panel display panel.

The pixels 451 are arranged in a plane to form a flat display panel 450, and can be arranged to be inclined toward the user's eyes 40, respectively. More specifically, the central axis of the reflective mirror (not shown, see FIG. 3) can be tilted in the direction toward the user's eye 40.

5, the flat panel display panel 450 shown in FIG. 5 also includes parallel light reflected from the concave mirror 451b and light incident from the outside into the eye 40 of the user, as in the curved display panel 350 shown in FIG. . Thus, the present invention can extend the field of view (FOV) of the user and increase the resolution of the eye proximity display.

The eye proximity display and the wearable device having the eye proximity display described above are not limited to the configuration and method of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments are selectively combined .

Claims (10)

A plurality of pixels arranged to form a display panel,
Wherein the pixel comprises:
Light source;
A concave mirror disposed so that a concave surface at a position spaced apart from the light source faces the user's eye so as to reflect the light generated from the light source and convert the light into parallel light directed to a user's eye;
A reflective mirror disposed adjacent to the light source to reflect light not directed to the concave mirror from the light source and direct the light to the concave mirror; And
And a transmissive portion formed at a predetermined refractive index on the opposite side of the concave portion of the concave mirror so as to keep the transmissive direction while the light incident from the outside passes through the concave mirror in a direction toward the user's eye Eye close-up display featuring. The method according to claim 1,
Wherein the reflective mirror is disposed between the light source and a user's eye when the eye proximity display is worn. The method according to claim 1,
The light-
A first transmissive portion formed of transparent plastic or glass to transmit light and filling a space between the light source and the concave mirror; And
(N) of the first transmissive portion so as to maintain the transmissive direction of the light incident from the outside toward the user's eye, the second transmissive portion being formed on the opposite side of the concave mirror with respect to the first transmissive portion, and a second transmissive portion formed of a material having a refractive index n 'of n'? n + 0.1. The method according to claim 1,
Further comprising a coating layer formed on the concave surface of the concave mirror and having a reflectance and transmittance adjusted to a predetermined value so as to reflect light incident from the light source and transmit light incident from the outside, . 5. The method of claim 4,
Wherein the coating layer has a transmittance of 40 to 60%. 5. The method of claim 4,
Wherein the coating layer is a polarization selective coating layer that reflects only specific polarized light and transmits the other. The method according to claim 1,
Wherein the pixels are arranged on a curved surface centered on the user ' s eyes to face the user ' s eyes. The method according to claim 1,
Wherein the pixels are arranged in a plane to form a flat panel display panel, each of the pixels being disposed obliquely to face the eye of the user. 9. The method of claim 8,
Wherein the pixels are arranged such that the central axis of the reflective mirror is tilted in a direction toward the user ' s eye. A frame portion formed to be wearable on a head portion of a human body; And
An eye proximity display mounted on the frame and arranged to face a user's eye when worn on the human body and displaying visual information,
The eye proximity display comprising a plurality of pixels arranged to form a display panel,
Wherein the pixel comprises:
Light source;
A concave mirror disposed so that a concave surface at a position spaced apart from the light source faces the user's eye so as to reflect the light generated from the light source and convert the light into parallel light directed to the user's eye;
A reflective mirror disposed adjacent to the light source to reflect light not directed to the concave mirror from the light source and direct the light to the concave mirror; And
And a transmissive portion formed at a predetermined refractive index on the opposite side of the concave portion of the concave mirror so as to keep the transmission direction of the light incident from the outside through the concave mirror in a direction toward the user's eye A wearable device characterized by.
KR1020140004761A 2014-01-14 2014-01-14 Near to eye display and wearable device having the same KR20150084603A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107589546A (en) * 2017-10-23 2018-01-16 北京小米移动软件有限公司 Optical system and augmented reality glasses
WO2018187955A1 (en) * 2017-04-12 2018-10-18 陈台国 Near-eye display method having focusing effect

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018187955A1 (en) * 2017-04-12 2018-10-18 陈台国 Near-eye display method having focusing effect
CN107589546A (en) * 2017-10-23 2018-01-16 北京小米移动软件有限公司 Optical system and augmented reality glasses
CN107589546B (en) * 2017-10-23 2024-05-24 北京小米移动软件有限公司 Optical system and augmented reality glasses

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