KR102344459B1 - Wearable display apparatus - Google Patents

Abstract

One embodiment of the wearable display device, a polarizing plate; a lens through which light forming an image incident from the polarizing plate is transmitted; a base in which the lens is accommodated; And by rotating the lens with respect to the base about the z-axis perpendicular to the x-axis parallel to the width direction of the base, by adjusting the angle of rotation of the lens with respect to the z-axis, to adjust the path of light passing through the lens It may include an angle adjustment unit.

Description

Wearable display device {WEARABLE DISPLAY APPARATUS}

The embodiment relates to a wearable display device capable of removing an unintended image and an image having noise by adjusting the position and posture of a lens.

The content described in this section merely provides background information for the embodiment and does not constitute the prior art.

A wearable display device such as a head mounted display (HMD) is a device that was created to allow a pilot to know flight information such as an airplane's altitude and speed. General commercial products were developed in the 1990s, and commercial products have been released since 1997, attracting a lot of attention.

A wearable display device is a device that is worn on the head like glasses so that an enlarged image is placed in front of the user's eyes and the user can see it. Optical technology is applied, so you can see a magnified screen close to 100 times.

With the development and commercialization of peripheral devices such as wearable display devices, the wearable computing industry is also expected to grow. Until now, wearable display devices have been mainly developed to enjoy movies and games, but recently, research and development as wearable monitors have been made due to the rapid development of display devices and image communication technologies, such as high performance and miniaturization of computer systems, and LCD and LED. and commercialized products have been released.

The wearable display device market has suffered a lot in the past due to its relatively high price, but it is expected to grow significantly by riding on the wearable computer industry. Wearable display devices are expected to be expanded to industrial sites, maintenance sites for large equipment such as automobiles, aircraft, and ships, logistics warehouses, etc., as well as sports entertainment fields such as automobile racing.

In particular, the development of processor and software technology enables the miniaturization of computing devices, and the wearable display device is expected to develop into a personal computing device such as a smart phone rather than a device that simply displays an image.

In the wearable display device, the adjustment of the optical path is an important issue. The adjustment of the optical path can be implemented by adjusting the position and posture of the lens.

On the other hand, in a wearable display device having a structure in which the position and posture of the lens cannot be adjusted, when the optical path is kept constant and an unintended image or an image with noise is generated, these cannot be removed.

Therefore, it is necessary to develop a wearable display device capable of removing unintended images and images with noise by adjusting the position and posture of the lens.

Accordingly, an object of the embodiment is to provide a wearable display device capable of removing an unintended image and an image having noise by adjusting the position and posture of the lens.

The technical task to be achieved by the embodiment is not limited to the technical task mentioned above, and other technical tasks not mentioned will be clearly understood by those of ordinary skill in the art to which the embodiment belongs from the description below.

One embodiment of the wearable display device, a polarizing plate; a lens through which light forming an image incident from the polarizing plate is transmitted; a base in which the lens is accommodated; And by rotating the lens with respect to the base about the z-axis perpendicular to the x-axis parallel to the width direction of the base, by adjusting the angle of rotation of the lens with respect to the z-axis, to adjust the path of light passing through the lens It may include an angle adjustment unit.

The angle adjusting unit is provided with a control lever that has one end coupled to the lens, the other side is exposed to the outside of the base, and the user moves the other side in the y-axis direction to rotate the lens with respect to the base around the z-axis it could be

At least a portion of the control lever is exposed to the outside of the base through a guide hole formed in the base, and an outer circumferential surface of the control lever is in frictional contact with a surface of the guide hole so that the control lever is moved on the guide hole. It may be to remain stationary.

At least a portion of the control lever may be exposed to the outside of the base through a guide hole formed in the base, and an outer circumferential surface of the control lever may be formed to mesh with a surface of the guide hole.

The control lever may include a gear rotatably coupled to one side of the lens and having a first tooth shape formed on an outer circumferential surface thereof; and a handle portion coupled to the other side of the gear and rotating the gear.

The guide hole, at least a portion of the surface may have a second tooth that meshes with the first tooth of the gear.

The lens may have a first protrusion coupled to the control lever on one side and a second protrusion on the other side.

The base may include: a first depression in which at least a portion of the first protrusion or the control lever is accommodated and communicates with the guide hole; and a second depression in which at least a portion of the second protrusion is accommodated.

The first recessed portion may be provided with a filler formed of a flexible material and surrounding at least a portion of the first protruding portion or the control lever.

The second recessed part may have a third protrusion having an end in contact with the second protrusion to limit shaking of the lens.

The second protrusion may rotate together as the lens rotates with respect to the base, and the third protrusion may be provided so as to be in rolling contact with the second protrusion in at least a partial section when the second protrusion rotates.

The third protrusion may be formed in at least one of an arc shape, a semicircle shape, and a curved shape.

Another embodiment of the wearable display device is a lens; a base in which the lens is accommodated; One end is coupled to the lens and the other side is exposed to the outside of the base, the user moves the other side to rotate the lens with respect to the base about the z axis parallel to the vertical direction of the base, the z of the lens By adjusting the rotation angle with respect to the axis, it may include a control lever for adjusting the path of the light passing through the lens.

At least a portion of the control lever may be exposed to the outside of the base through a guide hole formed in the base, and an outer circumferential surface of the control lever may be provided to frictionally contact a surface of the guide hole.

The control lever includes a gear having one side rotatably coupled to the lens and having a first tooth shape formed on an outer circumferential surface thereof, and a handle portion coupled to the other side of the gear and rotating the gear,

The base may have a guide hole formed on at least a portion of a surface of the gear having a second tooth shape that meshes with the first tooth shape of the gear, and a user rotates the handle to rotate the lens with respect to the base.

In an embodiment, the wearable display device has an angle adjusting unit for adjusting the angle of the lens that can be directly adjusted by the user, thereby optimizing the light path by easily adjusting the path of light passing through the lens.

Accordingly, it is possible to improve the quality of the displayed image of the wearable display device by removing an unintentional image or an image including noise generated due to the unintentional formation of the light path.

1 is a perspective view illustrating a wearable display device according to an embodiment.
2A is an exploded perspective view illustrating a wearable display device according to an exemplary embodiment.
2B is a plan view illustrating a path of light forming an image in the wearable display device according to an exemplary embodiment.
3 is a plan view illustrating a portion of a wearable display device according to an exemplary embodiment.
4 is an enlarged front view of part A of FIG. 3 .
5A is an enlarged plan view of part A of FIG. 3 .
5B is a view showing a state in which the filler is disposed in FIG. 5A.
FIG. 6 is an enlarged plan view of part B of FIG. 3 .
7 is a view for explaining a control lever according to another embodiment.

Hereinafter, an embodiment will be described in detail with reference to the accompanying drawings. Since the embodiment may have various changes and may have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the embodiment to a specific disclosed form, and it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the embodiment. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

Terms such as “first” and “second” may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. In addition, terms specifically defined in consideration of the configuration and operation of the embodiment are only for describing the embodiment, and do not limit the scope of the embodiment.

In the description of the embodiment, in the case where it is described as being formed in "up (up)" or "below (on or under)" of each element, on (on or under) ) includes both elements in which two elements are in direct contact with each other or one or more other elements are disposed between the two elements indirectly. In addition, when expressed as "up (up)" or "down (on or under)", the meaning of not only the upward direction but also the downward direction based on one element may be included.

Also, as used hereinafter, relational terms such as "upper/upper/above" and "lower/lower/below" etc. do not necessarily require or imply any physical or logical relationship or order between such entities or elements, It may be used only to distinguish one entity or element from another entity or element.

In addition, a Cartesian coordinate system (x, y, z) may be used in the drawings. In the drawing, the x-axis is an axis parallel to the width direction of the base, the z-axis is an axis parallel to the vertical direction orthogonal to the width direction of the base, and the y-axis is an axis orthogonal to the x-axis and the z-axis.

The wearable display device of the embodiment is a device that can be worn like glasses in a human body, and a human can view an image transmitted from an external device relatively without restriction in a place. A device serving as a source for transmitting an image may be a smartphone or other mobile device, and may be connected to the wearable display device by wire or wirelessly.

In this case, in order to wear the wearable display device of the embodiment, it may be detachably coupled to the glasses, or a separate wearing device that the user can wear like glasses may be coupled.

1 is a perspective view illustrating a wearable display device according to an embodiment. 2A is an exploded perspective view illustrating a wearable display device according to an exemplary embodiment. 2B is a plan view illustrating an optical path of light forming an image in a wearable display device according to an exemplary embodiment.

The wearable display device of the embodiment includes a light source unit 10 , a light guide unit 11 , a beam injection unit 12 , a display unit 13 , a polarizer 14 , a lens 15 , a first prism 16 , and a second prism (17) may be included.

In addition, the wearable display device of the embodiment may include a base 18 , a cover member 19 , and a fastening unit 22 to combine each of the above components into a single bundle. In addition, the wearable display device of the embodiment may include a printed circuit board 20 and a connector 21 to be electrically connected to an external device and to receive an image to be reproduced from the external device.

The light source unit 10 is electrically connected to the printed circuit board 20 , and serves to first irradiate an image to be reproduced received from an external device through the printed circuit board 20 in the form of light. The light source unit 10 is a device for irradiating light and may be configured with various materials, for example, may be configured using an LED having excellent durability, low heat generation, and small size.

The light guide unit 11 may serve to adjust an optical path so that the image irradiated from the light source unit 10 is directed to the beam ejection unit 12 . As shown in FIG. 2B , when viewed from the center of the light guide unit 11 , the light source unit 10 and the beam ejection unit 12 are located approximately at right angles to each other. Therefore, in order to direct the light forming the image irradiated from the light source unit 10 to the beam ejection unit 12, the light guide unit 11 may be provided with a plurality of gratings provided at appropriate positions and at appropriate angles therein. have.

Also, the light guide unit 11 may serve to uniformly distribute the light irradiated from the light source unit 10 to the beam distributing unit 12 due to the formation of the grating. Accordingly, the light uniformly irradiated from the light guide unit 11 may be uniformly incident on the surface of the beam ejection unit 12 adjacent to the light guide unit 11 .

The beam injector 12 irradiates the light incident from the light guide unit 11 to the display unit 13 , and receives the image reproduced from the display unit 13 so that the user can see it in detail with the naked eye again, and receives the lens (15) can serve as an investigation.

That is, the beam emitting unit 12 transmits light to the display unit 13 or receives light for forming a reproduced image from the display unit 13 , and receives the reproduced light transmitted from the display unit 13 . The path of light forming an image can be adjusted.

In order to form such an optical path, the beam splitter 12 may be formed of, for example, a polarizing beam splitter (PBS). The polarized beam splitter may be manufactured by combining a plurality of gratings, and forming a coating layer 100 capable of reflecting and/or diffracting light on each grating.

The display unit 13 plays a role of reproducing the light incident from the beam ejection unit 12 as an image in which the user can specifically detect the shape with the naked eye. The display unit 13 may be, for example, a reflective display that irradiates the reproduced image to the beam injector 12 again.

Such a reflective display has, for example, an Lcos type. The Lcos method is a method of reproducing an image by reflecting incident light as a reflective display. In the Lcos method, a silicon substrate is mainly used as a display element, and high-resolution images can be displayed on a small display screen.

The polarizing plate 14 may serve to polarize light that forms an image incident from the display unit 13 . The polarizing plate 14 may serve to transmit the p-wave light and absorb the s-wave among light components that form an incident image.

In this case, the p wave is a light wave that vibrates in a direction horizontal to the incident plane of light, and the s wave is a light wave that vibrates in a direction perpendicular to the incident plane of the light. In this case, the incident plane refers to a plane formed by an incident wave, a reflected wave, and a transmitted wave in a medium on which light is incident.

Since the polarizing plate 14 transmits only the p-wave light among the incident lights, the light passing through the polarizing plate 14 and incident to the lens 15 has only the p-wave component. Of course, on the contrary, by using a different type of polarizing plate 14, light passing through the polarizing plate 14 and incident to the lens 15 may have only the s-wave component.

The polarizing plate 14 prevents the image quality from being deteriorated due to the fact that the light forming the incident image has a p-wave component and an s-wave component at the same time, and the light of the p-wave component and the light of the s-wave component interfere with each other. can be prevented

On the other hand, the light guide unit 11 also has a polarization function, similarly to the polarizing plate 14, and polarizes the light incident from the light source unit 10 so that the p-wave component light and the s-wave component light interfere with each other. It can also prevent the image quality from being deteriorated.

The lens 15 may receive light that forms an image incident from the polarizer 14 and enlarge the image. That is, the image formed by the light incident from the polarizing plate 14 is very small, so it is inconvenient for the user to view the image as it is. Accordingly, the lens 15 may serve to enlarge the image to a size suitable for the user to view with the naked eye.

In addition, the lens 15 may serve to correct chromatic aberration, spherical aberration, etc. of the incident light, refract the incident light to change the optical path, and It is also possible to increase the resolution of the image to be formed.

Light passing through the lens 15 and forming an enlarged image is incident on the first prism 16 . In this case, in order to properly adjust the optical path incident from the lens 15 to the first prism 16 , a refraction part may be formed in a part of the lens 15 if necessary. Such a refractive portion may be formed by, for example, combining a medium having a different density with other portions of the lens 15 .

The first prism 16 may serve to bring the image transmitted from the lens 15 to the user's eye E. For this, the path of the light that forms an image incident from the lens 15 must be appropriately adjusted. Adjustment of this optical path uses the phenomenon of total reflection in the first prism 16, and in order to control the final optical path incident on the user's eye E, a reflective layer 200, which will be described later, is applied to the first It can also be formed in the prism 16.

At this time, the image passing through the first prism 16 from the lens 15 and incident on the user's eye E is a virtual image. That is, unlike the real image, which refers to the image of the real object located in front of the user's eye (E), the image reproduced on the display unit 13 not located in front of the user's eye (E) is a sight as described above. Because the path is adjusted, it is a virtual image that the user perceives visually as if it is located in front of the user's eyeball E.

An optical path for forming a virtual image in the wearable display device of the embodiment is as shown in FIG. 2B . Specifically, first, the light source unit 10 electrically connected to the printed circuit board 20 receives the information of the image to be reproduced from the external device through the printed circuit board 20 and transmits the light containing the image to the light guide unit ( 11) is investigated. In this case, the light irradiated from the light source unit 10 may contain an RGB signal.

Next, the light guide unit 11 directs the light incident from the light source unit 10 to the beam ejection unit 12 by adjusting the optical path. In this case, the light guide unit 11 may serve to uniformly distribute the light irradiated from the light source unit 10 to the beam dispensing unit 12 due to the formation of the grating. In addition, the light guide unit 11 has a polarization function, so that the light incident from the light source unit 10 is polarized so that the light of the p-wave component and the light of the s-wave component interfere with each other, thereby reducing the image quality. can also be prevented.

Next, the beam injector 12 irradiates the light incident from the light guide unit 11 to the display unit 13, so that the user can visually recognize the light incident on the display unit 13 in detail. Make it possible to play back the video.

Next, the display unit 13 reproduces the light incident from the beam injector 12 as a specific image, and the light forming the reproduced image is irradiated to the beam ejector 12 again.

Next, the beam ejection unit 12 makes the light that forms an image incident from the display unit 13 incident on the polarizing plate 14 . In this case, the beam splitter 12 may be formed of a polarized beam splitter as described above for adjusting the various optical paths.

Next, the polarizing plate 14 polarizes the light that forms an image incident from the beam ejector 12 . At this time, since the light transmits only one of the p-wave and the s-wave and absorbs the remaining waves, the light passing through the polarizing plate 14 is polarized to have only one of the p-wave and the s-wave. This is to prevent image quality deterioration due to interference between the p-wave and the s-wave, as described above.

Next, the lens 15 receives the light that forms an image incident from the polarizing plate 14 and enlarges it to a size suitable for the user to see with the naked eye. In this case, as described above, a refraction portion may be formed in a portion of the lens 15 for optical path control, and light passing through the refraction portion is incident on the first prism 16 at an incident angle set.

Next, the first prism 16 may serve to irradiate the user's eye E with light that finally forms an image by adjusting the optical path of the image transmitted from the lens 15 . In this case, the adjustment of the optical path may be implemented using the total reflection phenomenon of the first prism 16 and the reflective layer 200 formed on the first prism 16 .

The second prism 17 may serve to reduce distortion of the real image reaching the user's eye E in combination with the first prism 16 . The user can simultaneously see the real image of the object in front of the user's eyeball E together with the virtual image that is the image reproduced on the display unit 13 through the first prism 16 .

However, when the user's eye E and the end of the first prism 16 are adjacent to each other, the actual image reaching the user's eye E may be distorted due to the shape of the end of the first prism 16 . This is because, due to the shape of the end of the first prism 16, refraction, diffraction, etc. of light showing a real image may occur.

Accordingly, when the second prism 17 is coupled to the end of the first prism 16 to extend the entire prism, distortion of an image due to the shape of the end of the first prism 16 can be reduced.

The base 18 has an accommodation space formed therein, and may serve to accommodate the light guide unit 11 , the beam jet unit 12 , the display unit 13 , the polarizer 14 , the lens 15 , and the like. Since the base 18 accommodates various components of the embodiment, its shape may be complicatedly formed. Therefore, the base 18 may be manufactured by a method capable of being manufactured in such a complex shape, for example, by injection molding.

The cover member 19 closes at least a portion of the upper portion of the base 18 so that each component accommodated in the base 18 can be stably accommodated in the base 18 . In addition, the cover member 19 may be coupled to the base 18 by the fastening part 22 .

In addition, a protrusion 171 is formed on the upper surface of the cover member 19, and the printed circuit board ( 20) can be combined.

Upper and lower portions of the printed circuit board 20 may be coupled to the base 18 and the cover member 19 , and may be electrically connected to the light source unit 10 and the display unit 13 . Accordingly, the printed circuit board 20 can transmit an image signal to be reproduced to the light source unit 10 , and supply necessary power to the light source unit 10 and the display unit 13 .

On the other hand, the printed circuit board 20 may be formed with grooves or holes in the upper and lower portions. Accordingly, the upper and lower portions of the printed circuit board 20 may be coupled to the protrusion 171 formed on the upper surface of the cover member 19 and the protrusion 171 formed under the base 18 , respectively.

The connector 21 may serve to connect the printed circuit board 20 and an external device. In this case, the external device may be composed of a control device for controlling the wearable display device of the embodiment, a storage device for recording an image to be played back, a communication device capable of interlocking a mobile device such as a smartphone and the wearable display device with each other, etc. .

The fastening part 22 may serve to couple the cover member 19 and the base 18 to each other. Therefore, if the fastening part 22 is inserted into a hole or groove formed in each of the cover member 19 and the base 18, the cover member 19 and the base 18 can be detachably coupled. You are free to use any For example, bolts, screws, coupling pins, etc. may be used as the fastening part 22 .

3 is a plan view illustrating a portion of a wearable display device according to an exemplary embodiment. 4 is an enlarged front view of part A of FIG. 3 . 5A is an enlarged plan view of part A of FIG. 3 . FIG. 5B is a view showing a state in which the filler 200 is disposed in FIG. 5A .

An embodiment may include an angle adjusting unit. As shown in FIG. 3 , the angle adjusting unit rotates the lens 15 with respect to the base 18 about the z axis perpendicular to the x axis parallel to the width direction of the base 18 , ) can be adjusted with respect to the z-axis.

That is, by the angle adjusting unit, the lens 15 may be rotated, for example, from a position shown by a solid line in FIG. 3 to a position shown by a hidden line in FIG. 3 . The angle adjusting unit may rotate the lens 15 to adjust the path of light passing through the lens 15 and incident on the first prism 16 .

As the path of the light incident on the first prism 16 is adjusted in this way, the user can adjust the image quality of the image contained in the light finally incident on the user's eye E. In addition, as the path of the light is adjusted, it is possible to prevent an unintentional image or an image including noise from being incident on the eyeball (E).

Meanwhile, the angle adjusting unit may be provided as an adjusting lever 100 in an embodiment. The control lever 100 may be provided in a structure in which one end is coupled to the lens 15 and the other side is exposed to the outside of the base 18 , and the user moves the other side of the control lever 100 in the y-axis direction. By moving the lens 15 can be rotated with respect to the base 18 about the z-axis.

As shown in FIG. 4 , at least a part of the control lever 100 is exposed to the outside of the base 18 through the guide hole 180 formed in the base 18 , and the user can use the outside of the base 18 . The angle of the lens 15 can be adjusted by moving the exposed control lever 100 part.

On the other hand, it is necessary to maintain the position of the control lever 100 without moving in the position moved in the y-axis direction. To this end, by adjusting the width between the upper and lower surfaces 180a of the guide hole 180 , the control lever 100 may be in frictional contact with the upper and lower surfaces 180a of the guide hole 180 .

At this time, the frictional force generated between the outer circumferential surface of the control lever 100 and the upper and lower surfaces 180a of the guide hole 180 allows the user to move the control lever 100 along the guide hole 180 without applying a large force. The degree to which the control lever 100 does not slide on the upper and lower surfaces 180a of the guide hole 180 is appropriate unless an external force greater than the force that moves the control lever 100 is applied.

The cross-sectional radius of the control lever 100 and the upper and lower surfaces 180a of the guide hole 180 to generate a frictional force of the above magnitude between the outer peripheral surface of the control lever 100 and the upper and lower surfaces 180a of the guide hole 180 It is necessary to properly adjust the distance between them.

In addition, a coating layer of a flexible material, such as rubber, is formed on the outer peripheral surface of the control lever 100 or the upper and lower surfaces 180a of the guide hole 180 to have a frictional force of the above size, while the control lever 100 and the guide hole It is also possible to reduce the wear of the control lever 100 and the guide hole 180 due to the friction between the 180 .

As described above, when the control lever 100 and the upper and lower surfaces 180a of the guide hole 180 are in frictional contact, the control lever 100 is stopped at the position moved on the guide hole 180 due to frictional force. state can be maintained.

In addition, when the control lever 100 and the guide hole 180 are in frictional contact with each other, the frictional force has an effect of reducing the shaking of the lens 15 . In addition, as described above, when the coating layer of a flexible material such as rubber is formed on the outer peripheral surface of the control lever 100 or the upper and lower surfaces 180a of the guide hole 180, the coating layer can serve as a buffer, There is an effect that the shake of the lens 15 can be further reduced.

A first protrusion 151 and a second protrusion 152 may be formed in the lens 15 . The first protrusion 151 may be formed on one side of the lens 15 and may be coupled to the control lever 100 at an end thereof. Meanwhile, as shown in FIG. 5A , at least a portion of the first protrusion 151 or the control lever 100 is accommodated in the base 18 , and a first recessed part communicating with the guide hole 180 . 182 may be formed.

In FIG. 5A, the lens 15, the first protrusion 151, and the control lever 100 indicated by solid lines are accommodated inside the first depression 182 and the base 18, and the lens 15' indicated by silver lines. , the first protrusion 151 ′, can be moved to the position of the control lever 100 ′, and through this movement, the position and posture of the lens 15 with respect to the base 18 are adjusted to pass through the lens 15 . The path of the light can be adjusted.

It is appropriate that the control lever 100 is designed to be movable along the guide hole 180 until it touches both surfaces of the guide hole 180 . Therefore, it is appropriate that the width of the first recessed portion 182 is equal to or greater than the width between the surfaces of both sides of the guide hole 180 so as not to interfere with the movement of the control lever 100 .

The first protrusion 151 is a portion coupled to the control lever 100 . Accordingly, one end of the control lever 100 and the end of the first protrusion 151 may be coupled to each other by an adhesive or screw-coupled, or the control lever 100 and the first protrusion 151 may be formed by injection molding or the like. It may be integrally formed by a method.

The second protrusion 152 may be formed on the other side of the portion where the first protrusion 151 of the lens 15 is formed. The second protrusion 152 may be supported by a third protrusion 184 formed in the second concave portion 183 for accommodating it, which will be described later with reference to FIG. 7 .

As shown in FIG. 5B , the wearable display device of the embodiment may include the filler 200 . The filler 200 may be provided to surround at least a portion of the first protrusion 151 or the control lever 100 in the first depression 182 .

The filler 200 may be formed of, for example, a flexible material such as a sponge. The filler 200 may be filled in the space formed by the first recessed part 182 and the first protrusion 151 or the control lever 100 accommodated in the first recessed part 182 . Also, at least a portion of the guide hole 180 may be filled.

The filler 200 closes the guide hole 180 to block foreign substances from entering the inner space of the base 18 and the lens 15 from the outside through the guide hole 180 . At this time, since the filler 200 is formed of a flexible material, it is possible to maintain the closed state of the guide hole 180 while causing deformation when the first protrusion 151 and the control lever 100 are moved.

The filler 200 may serve to prevent a foreign material from being introduced through the guide hole 180 to contaminate the lens 15 , thereby preventing the optical performance of the lens 15 from being deteriorated.

In addition, the filler 200 may serve as a damper while causing deformation when the control lever 100 or the first protrusion 151 moves. Accordingly, the filler 200 may contribute to more precisely adjusting the position and posture of the lens 15 by limiting the rapid movement of the control lever 100 or the first protrusion 151 .

At this time, the filler 200 may be fixed and filled in the recessed groove by being adhered to both sides or the bottom of the recessed groove by an adhesive.

FIG. 6 is an enlarged plan view of part B of FIG. 3 . As shown in FIG. 6 , the wearable display device of the embodiment may include a second recessed part 183 and a third protruding part 184 .

Referring to FIG. 3 , the second recessed part 183 is formed on the other side of one side of the inner side surface of the base 18 on which the first recessed part 182 is formed, and at least a portion of the second protrusion 152 . can be accepted.

As shown in FIG. 6 , the third protruding part 184 may be formed to protrude from both sides of the second recessed part 183 , except for an open part and a closed part facing it. In this case, the end of the third protrusion 184 may be in contact with the second protrusion 152 to limit the shaking of the lens 15 .

Therefore, although the lens 15 can rotate about the z-axis by the movement of the control lever 100, the friction force between the guide hole 180 and the control lever 100, the third protrusion 184 and The shaking of the lens 15 is limited due to the structure in which the second protrusions 152 contact each other.

Therefore, even when the user wearing the wearable display device of the embodiment moves, the lens 15 is stably mounted so that the user can view a high-quality image.

Meanwhile, the second protrusion 152 rotates together as the lens 15 rotates with respect to the base 18, and the third protrusion 184 rotates when the second protrusion 152 rotates. It may be provided in rolling contact with the second protrusion 152 in at least some sections.

For the rolling contact, the third protrusion 184 is formed in an arc shape, a semicircle shape, a curved shape, etc., so that when the second protrusion 152 rotates in at least some sections, the second protrusion 152 and the rolling can be contacted

For example, as shown in FIG. 6 , the lens 15 and the second protrusion 152 indicated by a solid line are indicated by a hidden line due to the movement of the control lever 100 , and the lens 15 ′ and the second protrusion ( When moving to the position of 152 ( 152 ′), the second protrusion 152 rotates with respect to the third protrusion 184 fixed to the base 18 .

At this time, the second protrusion 152 and the third protrusion 184 may be in rolling contact at least in some sections. Since the rolling contact has a significantly smaller frictional force than the sliding contact, a rolling contact section is formed between the second protrusion 152 and the third protrusion 184, so that the second protrusion 152 or the third protrusion ( 184) can be significantly reduced.

In addition, due to the rolling contact between the second protrusion 152 and the third protrusion 184 , it is possible to adjust the position and posture of the lens 15 by applying a smaller torque to the control lever 100 than the full sliding contact, and the second The protrusion 152 can rotate more smoothly with respect to the base 18 .

7 is a view for explaining the control lever 100 according to another embodiment. 7, at least a part of the control lever 100 of another embodiment is exposed to the outside of the base 18 through the guide hole 180 formed in the base 18, and the control lever 100 ) may be formed to mesh with the surface of the guide hole 180 .

To this end, the control lever 100 may include a gear 110 and a handle portion 120 , and the guide hole 180 has a second tooth shape 181 meshed with the gear 110 on the upper and lower surfaces 180a. ) can be formed.

One side of the gear 110 is rotatably coupled to the lens 15 , and a first tooth shape 111 may be formed on an outer circumferential surface of the gear 110 . The first tooth 111 may be formed so that its shape, size, etc. may mesh with the second tooth 181 . The handle unit 120 may be coupled to the other side of the gear 110 and serve to rotate the gear 110 .

The handle unit 120 may be coupled to the gear 110 by adhesive, screw coupling, or the like. In addition, the handle portion 120 and the gear 110 may be integrally coupled to each other by the injection molding method.

As described above, at least a portion of the surface of the guide hole 180, in particular, the upper and lower surfaces 180a, the second tooth shape 181 that meshes with the first tooth shape 111 of the gear 110 may be formed. . At this time, the first tooth shape 111 and the second tooth shape 181 are meshed with each other, and as long as the user does not move the control lever 100 by rotating the handle part 120 , the control lever 100 is a guide It does not move by itself along the hole 180 .

Accordingly, the control lever 100 of the embodiment can maintain a stopped state at the position moved on the guide hole 180 , similarly to the embodiment shown in FIG. 5A .

In an embodiment, when the user rotates the handle unit 120 , the gear 110 rotates to move along the guide hole 180 . Accordingly, the first protrusion 151 coupled to the gear 110 and the lens 15 are moved, and accordingly, the user adjusts the position and posture of the lens 15 to the path of the light passing through the lens 15 . can be adjusted.

Meanwhile, the filler 200 in FIG. 5B is also provided in the embodiment of FIG. 7 to close the guide hole 180 to prevent the penetration of foreign substances into the base 18 and the lens 15, and can play a role

In an embodiment, the wearable display device is provided with an angle adjustment unit for adjusting the angle of the lens 15 that can be directly adjusted by the user, thereby optimizing the light path by easily adjusting the path of light passing through the lens 15 there is an effect

Accordingly, it is possible to improve the quality of the displayed image of the wearable display device by removing an unintentional image or an image including noise generated due to the unintentional formation of the light path.

Although only a few have been described as described above in relation to the embodiments, various other forms of implementation are possible. The technical contents of the above-described embodiments may be combined in various forms unless they are incompatible with each other, and may be implemented as a new embodiment through this.

14: polarizer
15: lens
18: base
100: control lever
110: gear
111: first tooth type
120: handle part
151: first protrusion
152: second protrusion
180: guide hole
180a: upper and lower surfaces of guide holes
181: second tooth
182: first depression
183: second depression
184: third protrusion
200: filler

Claims (15)

display unit;
a lens through which the image generated by the display unit passes;
a base accommodating the lens and including a guide hole; and
By rotating the lens with respect to the base about the z-axis perpendicular to the x-axis parallel to the width direction of the base, and adjusting the rotation angle of the lens with respect to the z-axis, the path of light passing through the lens is adjusted Including an angle adjustment unit to
The angle adjusting unit includes a control lever having one end coupled to the lens and the other end exposed to the outside of the base through the guide hole,
As the other end of the control lever is moved in the y-axis direction, the lens is rotated with respect to the base about the z-axis,
The outer peripheral surface of the control lever is a wearable display device formed to mesh with the guide hole surface. According to claim 1,
and a polarizing plate for polarizing light forming an image generated by the display unit and injecting the polarized light into the lens. According to claim 1,
The outer circumferential surface of the control lever is in frictional contact with the guide hole surface, so that the control lever maintains a stationary state at a position moved on the guide hole. delete According to claim 1,
The control lever,
a gear having one side rotatably coupled to the lens and having a first tooth shape formed on an outer circumferential surface thereof; and
A wearable display device coupled to the other side of the gear and comprising a handle for rotating the gear. 6. The method of claim 5,
A wearable display device in which at least a portion of the surface of the guide hole is formed with a second tooth that meshes with the first tooth of the gear. According to claim 1,
The lens is
A wearable display device having a first protrusion coupled to the control lever on one side and a second protrusion on the other side. 8. The method of claim 7,
The base is
a first depression in which at least a portion of the first protrusion or the control lever is accommodated and communicates with the guide hole; and
A wearable display device including a second depression in which at least a portion of the second projection is accommodated. 9. The method of claim 8,
A wearable display device having a filler formed of a flexible material and surrounding at least a portion of the first protrusion or the control lever in the first recessed portion. 9. The method of claim 8,
A wearable display device having a third protrusion having an end in contact with the second protrusion to limit shaking of the lens in the second concave portion. 11. The method of claim 10,
The second protrusion rotates together as the lens rotates with respect to the base, and the third protrusion makes rolling contact with the second protrusion in at least a partial section when the second protrusion rotates. 12. The method of claim 11,
The third protrusion is a wearable display device formed in at least one shape of an arc shape, a semicircle shape, and a curved shape. lens;
a base for accommodating the lens; and
One end is coupled to the lens and the other side is exposed to the outside of the base, the user moves the other side, rotates the lens with respect to the base about the z axis parallel to the vertical direction of the base, the z of the lens By adjusting the rotation angle with respect to the axis, comprising a control lever for adjusting the path of the light passing through the lens,
The control lever,
a gear having one side rotatably coupled to the lens and having a first tooth shape formed on an outer circumferential surface thereof; and
Coupled to the other side of the gear, comprising a handle for rotating the gear,
The base includes a guide hole, at least a portion of the surface of the guide hole is formed with a second tooth that meshes with the first tooth of the gear,
A wearable display device in which the lens is rotated with respect to the base by rotating the handle. 14. The method of claim 13,
At least a portion of the control lever is exposed to the outside of the base through the guide hole, and an outer circumferential surface of the control lever is in frictional contact with a surface of the guide hole. 14. The method of claim 13,
a display unit that generates an image; and
and a polarizing plate for polarizing light forming an image generated by the display unit and injecting the polarized light into the lens.

Images