KR101646873B1

KR101646873B1 - Head-Mounted Display Device Having Rotational Hinge Structure in Goggle Module

Info

Publication number: KR101646873B1
Application number: KR1020150061331A
Authority: KR
Inventors: 최장호; 유선영; 김지섭
Original assignee: (주)그린광학
Priority date: 2015-04-30
Filing date: 2015-04-30
Publication date: 2016-08-16

Abstract

The present invention relates to a head mount display device having a goggle negative rotation structure. More specifically, the present invention relates to a head-mounted display device having a hinge structure such that a virtual screen can be viewed only by up-and-down movement of an eyeball while fully securing an external view, as well as an augmented reality matching a virtual screen and an external view. A head-mounted display device having a goggle negative rotation structure according to one embodiment of the present invention includes a head-mounted display goggle module consisting of at least one display and an optical module for transmitting image light emitted from the at least one display to a user's eyeball; A hinge module having guide means capable of rotating up and down with the center point of the eye as a rotation axis; A controller module, connected to the hinge module, for generating an image signal and transmitting the image signal to the at least one display; And a frame, coupled to the controller module, for supporting the head mount display to be attached to the face of the user.

Description

[0001] The present invention relates to a head-mounted display device having a goggle-

The present invention relates to a head mount display device having a goggle negative rotation structure. More specifically, the present invention relates to a head-mounted display device having a hinge structure such that a virtual screen can be viewed only by up-and-down movement of an eyeball while fully securing an external view, as well as an augmented reality matching a virtual screen and an external view.

2. Description of the Related Art Generally, an image display device forms a focal point so that a virtual large-sized screen can be formed at a long distance by using a precision optical device, which is generated in a position very close to an eye, so that a user can view an enlarged virtual image An image display device.

In addition, the image display device is configured to include a see-close type in which only the image light emitted from the display device can not be seen in the surrounding environment, and a see-close mode in which the image light emitted from the display device (See-through) that can be seen.

On the other hand, conventional image display devices have different focal distances from each other, and therefore, there is a tendency for the user to contraction or relaxation of the pupil for visualizing the virtual image and the degree of relaxation of the muscle for viewing the external image, Since the virtual image and the external image overlap each other, when the matching image is provided through the augmented reality, the user must try to change the focus quickly to view both images at the same time, There is a drawback that it is difficult to obtain a clear image in a natural state due to overlapping of both images.

To solve these problems, a global company, Google launched a product called Google Glass, and released a model that separates virtual images from external images.

However, such a Google glass product has a problem that its application is limited because it can not directly use an augmented reality technique in which a virtual screen must be provided in an external image in an application field such as vehicle maintenance and navigation.

In addition, if you want to use it in augmented reality, you have to move the eyeballs to the upper and lower parts from time to time, so you can feel more fatigue in the eye muscles than the way of moving the pupil muscles for focus change. It takes a lot of time and can be an inefficient operation.

Accordingly, there is a demand for a head-mounted display device that can solve such a problem.

Korean Intellectual Property Office Registration No. 10-0928226

SUMMARY OF THE INVENTION The present invention has been made to overcome the above-mentioned problems, and it is an object of the present invention to provide a head mount display device having a goggle negative rotation structure.

Specifically, the present invention proposes a head-mounted display device having a hinge structure so that a virtual screen can be viewed not only in augmented reality matching a virtual screen and an external view, but also in an up-and-down movement of the eye while fully securing an external view.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It can be understood.

A head-mounted display device having a goggle negative rotation structure for realizing the above-mentioned object according to the present invention includes at least one display and an optical module for transmitting video light emitted from the at least one display to a user's eyeball Made head-mounted display goggle module; A hinge module having guide means capable of rotating up and down with the center point of the eye as a rotation axis; A controller module, connected to the hinge module, for generating an image signal and transmitting the image signal to the at least one display; And a frame, coupled to the controller module, for supporting the head mount display to be attached to the face of the user.

Further, the image light may be incident on the tangent plane of the pupil center of the eye vertically using the guiding means of the hinge module.

In addition, the guide means can be rotated up and down in a circular shape with the center point of the eyeball as a rotation axis, and the image light can be always incident on the tangent plane of the pupil center of the eye.

In addition, the frame may be a frame having both sides of the user nose as weight support points so that the head mount display is attached to the face of the user using self-elasticity and does not flow down.

In addition, the guide means may have the form of an arc, which is at least a part of a concentric circle having the center of gravity of the eyeball as a rotation axis.

The rotation angle of the head mount display goggle module may be determined according to an arc distance between a starting point and an end point of the guiding means of the hinge module.

Further, the rotation angle may be determined according to the following equation.

Equation

S is the circular arc distance between the starting point and the end point of the guide means, and ER is the distance between the tangential plane of the eyeball and the guide means.

The present invention can provide a user with a head mount display device having a goggle negative rotation structure.

Specifically, the present invention can provide a head-mounted display device having a hinge structure so that a virtual screen can be viewed not only in an augmented reality matching a virtual screen and an external view, but also in an up-and-down motion of an eye while fully securing an external view.

In addition, the head mount display device having the goggle negative rotation structure according to the present invention can achieve the objective of the Seurux type augmented reality by allowing the user to arrange the head mount display goggles vertically in front of the eye when the user desires an augmented reality In addition, when it is desired to acquire information without being disturbed by the forward view, the user can easily obtain information by moving the head-mounted display goggle module simply by moving the head upward.

Further, the head-mounted display device having the goggle negative rotation structure according to the present invention has a means for minimizing the visual disturbance by rotating the goggle module upwardly so that the eye fatigue caused by the focus mismatch between the virtual screen and the external image Can be minimized.

Further, in the head-mounted display device having the goggle negative rotation structure according to the present invention, when the goggle module is rotated upward, a filter for blocking an external image transmitted in front of the goggle module is further disposed, So that it is possible to improve the immersion feeling as in a hermetically sealed head-mounted display.

It should be understood, however, that the effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be construed as limited.
1 is a cross-sectional view schematically illustrating a concept of a conventional head-mounted display device in which an external image and a virtual screen are simultaneously provided to realize an augmented reality.
FIG. 2 illustrates a specific example of a Google Glass located at the upper part of a user's eye to minimize visual disturbance in connection with the present invention.
3 is a side view schematically illustrating the concept of a head mount display having a goggle negative rotation structure according to the present invention.
4 is a side view for explaining the operation principle of the head mount display having the goggle negative rotation structure according to the present invention.
FIG. 5 is a cross-sectional view illustrating a human eyeball structure according to the present invention and a principle of incident image light perpendicular to a tangential plane of a pupil to form an image on the optic nerve.
FIG. 6A is a structural view illustrating a structure and operation method of a sliding hinge module according to an embodiment of the present invention.
FIG. 6B is a structural view illustrating an embodiment in which the goggle module is positioned at a vertical position of the eyeball in a head mount display having a sliding hinge-type goggle negative rotation structure according to the present invention.
FIG. 6C is a structural view illustrating a state in which a goggle module is positioned at an upper position of an eye in a head mount display having a sliding hinge type goggle negative rotation structure according to the present invention.
FIG. 7A is a structural view illustrating an embodiment in which the goggle module is positioned at a vertical position of the eyeball in a head-mounted display having a goggle-type swing structure in the form of a spring hinge according to the present invention.
7B is a structural view illustrating an operation method according to an embodiment of the spring hinge module according to the present invention.
7C is a structural view showing an embodiment in which the goggle module is changed to the upper position of the eyeball in a head mount display having a spring hinge type goggle swing structure according to the present invention.

In other words, a general image display device can not see the surrounding environment, but can be closed (see-close) in which only the image light emitted from the display device can be seen, and the image light emitted from the display device (See-through).

FIG. 1 shows an example of a conventional transmissive image display device.

1 includes a display device 10 for emitting image light, a polarized light separator 11 for reflecting only specific polarized light out of the light emitted from the micro display panel, A phase delay plate 12 for converting the linearly polarized light reflected by the polarized light separator into circularly polarized light or changing incident circularly polarized light to linearly polarized light and a circularly polarized light having passed through the phase delay plate 12 A semitransparent concave reflector 13 to be sent to the phase delay plate 12 and an optical opening and closing switch panel 14 attached to the outer surface of the transflective concave reflector so as to be able to open and close the ambient light, Optical system.

1, the image light generated in the display device 10 is converted into a P-wave or S-polarized light in the 90-degree direction by the polarized light separator 11 arranged at an angle of 45 degrees with respect to the display device 10 Only a 50% beam of a wave property is transmitted or reflected to arrive at the phase delay plate 12.

In addition, the image light that has been linearly polarized in the phase delay plate 12 is converted into circularly polarized light, reaches the transflective concave reflector 13, is reflected, becomes a circularly polarized light state whose rotation direction is opposite to that of the phase delay plate 12, The user can see the image enlarged by the transflective concave reflector 13 by reaching the user's eyes through the polarized light separator 11 again.

However, in the technique proposed in FIG. 1, the virtual image A reflected by the polarized light separator 11 and the transflective concave reflector 13 and transmitted to the user, and the virtual image A transmitted to the user by the transflective concave reflector 13 and the polarized light separator The external image B transmitted to the user is transmitted to the pupil of the user at the same time but differs in focal distance from each other so that the degree of muscle contraction or relaxation of the pupil for viewing the virtual image A, (A) and the external image (B) are superimposed on each other, so that the matched image is provided through the augmented reality There is a disadvantage that the eye fatigue can be very accelerated because the user has to try to change the focus quickly to view the two images at the same time, Due to the overlap there is not all that difficult to secure vivid images of nature.

To solve these problems, a global company, Google, released a product called Google Glass, and released a model for separating a virtual image from an external image, as shown in FIG.

FIG. 2 illustrates a specific example of a Google Glass located at the upper part of a user's eye to minimize visual disturbance in connection with the present invention.

Referring to FIG. 2, the virtual screen is disposed at the upper portion of the user's viewpoint axis and is provided to the user with a slope (A), and the external image is processed parallel to the user's horizontal axis of sight. (B) In this case, the virtual image A can be confirmed by raising the eye upward, and the external image B can be confirmed without disturbing the forward view when gazing at the front.

However, the technique proposed in FIG. 2 is very convenient for obtaining clear information in a random manner, but it can be used directly in an augmented reality technique in which a virtual image must be matched to an external image in applications such as surgery, car maintenance, and navigation Therefore, in order to utilize it in the augmented reality, it is necessary to move the eyeball to the upper part and the lower part from time to time. Therefore, the method of moving the pupil muscle for the focus change shown in FIG. .

In addition, since the technique disclosed in FIG. 2 requires a user to arbitrarily match a virtual screen and an external image, it takes much more time than the method of FIG. 1 and can be an inefficient operation.

Therefore, in order to solve such a problem, the present invention proposes a head mount display device having a hinge structure capable of viewing a virtual screen only by moving the eyeball up and down while fully securing an external view, as well as an augmented reality matching a virtual screen and an external view I want to.

More particularly, the present invention relates to a head-mounted display goggle which can be vertically disposed in front of an eyeball when a user desires an augmented reality, thereby achieving a cue-through type augmented reality purpose, If the user wants to acquire information without receiving the information, the user simply moves the head goggle display goggle module upward and rotates the goggle module so that the user can move the pupil upward to acquire information conveniently.

In addition, in the present invention, when the head mount display is not used, the goggle module can be rotated to the upper side to minimize the visual disturbance, thereby minimizing eye fatigue caused by the mismatch between the virtual screen and the external image In addition, when the goggle module is rotated to the upper side, a filter for blocking the external image transmitted in front of the goggle module is additionally disposed, so that the virtual screen can be recognized more clearly and quickly, thereby improving the immersion feeling as in the closed head- Head-mounted display device.

More specifically, the present invention allows a head-mounted display goggle to be vertically disposed in front of an eyeball when a user desires an augmented reality, thereby achieving the objective of a seed-through augmented reality, The present invention relates to a head mount display device capable of easily acquiring information by moving the head-mounted display goggle module simply by moving the head-mounted display goggle module up and rotating the user.

In addition, the present invention minimizes visual disturbance by rotating the goggle module upward when the head mount display is not in use, thereby minimizing eye fatigue caused by a focus mismatch between the virtual screen and the external image It is possible to provide a head-mounted display device capable of making a head-

In addition, when the goggle module is rotated upward, a filter for blocking an external image transmitted in front of the goggle module is additionally disposed, so that the virtual screen can be recognized more clearly and quickly. As a result, The head mount display device can be improved.

A head-mounted display device having a goggle negative rotation structure according to the present invention includes a head-mounted display goggle module including at least one display and an optical module for transmitting image light emitted from the display to a user's eyeball, A hinge module having guiding means for vertically rotating the center of eye of the user so that the image light emitted from the goggle module is vertically incident on the tangent plane of the center of the user's pupil as a rotation axis; A controller module coupled to the controller module to provide a self-elasticity to the head-mounted display goggle module, the controller module having a controller incorporated therein for transmitting and varying a signal to transmit a video signal to a display built in the head- And a frame having both side surfaces of the user nose as weight support points so as not to adhere to the user's face and to flow down.

In addition, in the head-mounted display device having the goggle negative rotation structure according to the present invention, the guide of the hinge module may be a circular arc that is a part of a concentric circle having the center of the eye as a rotation axis.

Further, in the head-mounted display device having the goggle negative rotation structure according to the present invention, the hinge module is a sliding type and comprises a guide member, a leaf spring, a guide groove, and a fixing member And can have a goggle secondary swivel structure.

Hereinafter, a specific form of the present invention will be described with reference to the drawings.

A head-mounted display device having a goggle negative rotation structure according to a preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

3 is a schematic view of a head mount display device having a goggle negative rotation structure according to the present invention. The head mount display device having the goggle negative rotation structure includes one goggle module 30, one hinge module 31, A single controller module 32, and a single frame 33. As shown in Fig.

3, the goggle module 30 for providing a virtual screen A to a user is disposed at a position perpendicular to the center horizontal direction of the eye 34 of the user and separated from the controller module 32 And is connected to the controller module 32 by the attached hinge module 31 and the controller module 32 is firmly attached to the frame 33 so as not to move.

Here, the goggle module 30 may be either a see-through optical module for an augmented reality or a see-closed optical module providing only a virtual screen, and any method may be used. In the present invention, A user may view the virtual screen A provided through the light emitting surface 301 through the optical guiding method of the optical module 30 and the virtual screen A provided through the light emitting surface of the optical module 31 It is possible to simultaneously view the external image B transmitted through the emitting surface 301 and transmitted to the user.

In this structure, when the user removes the virtual screen B and sees only the external image B, when the goggle module 30 is lifted up, the plate spring device and the guide built in the hinge module 31 The optical module 30 moves as it rotates upward according to the radius of rotation of the guide and the user can observe the external image more clearly by eliminating the obstacle in front of the line of sight.

Also, in this state, when the user raises his or her eyes, the virtual image A provided by the optical module 30 rotated upward can also be confirmed clearly. This principle is shown in FIGS.

Referring to FIG. 4, the eyeballs of the human eye are formed by the relaxation and contraction of the pupil and the lens, which function as lenses, and the eyeballs move as if they are rotated up and down. The central axis of the rotation is the center of the eyeball to be.

According to this principle, in order for the image of the virtual screen A provided through the exit surface 301 of the goggles module 30 to be clearly transmitted to the user, the direction of the sight line of the user and the exit surface 301 is The center axis of the turning radius of the emitting surface 301 must be the center of the eyeball, and an embodiment in which this principle is applied to the present invention is shown in FIG.

5, when the user desires an augmented reality, the goggle module 30 is matched with the virtual image A and the external image B while being vertically positioned on the front of the user's eyes, , If the user wants to confirm only the external image B clearly without wanting the augmented reality, the goggle module 30 is rotated upward.

In this case, even if the goggle module 30 is rotated upward, in order for the virtual screen A to be always provided to the user clearly, the goggle module 30 must rotate in a concentric circle around the center of the eyeball The guide 311 of the hinge module 31 must be an arc that is a part of a concentric circle with the center of the eyeball as a rotation axis.

FIGS. 6A, 6B, and 6C illustrate the structure and operation method of the hinge module according to an exemplary embodiment of the present invention, and the relationship between the rotation angle of the goggle module and the guide length of the hinge module.

Referring to FIG. 6A, the hinge module 31 includes a guide member 311, a leaf spring 312, a guide groove 313, And a fixing member 314 for coupling with the controller module 32. As the goggle module 30 rotates upwardly, the leaf spring 312 moves to the starting point of the guide groove 313 A to the end point B along the arc of the guide member 311 and is fixed by the spring action of the leaf spring 312 to the groove disposed in the guide groove 313 at the end point B . At this time, the arc distance between the starting point A and the end point B affects the rotation angle of the goggle module 30, and the correlation is shown in 6b and 6c.

Referring to FIGS. 6a and 6b, the diameter (ED) of the eyeball shown in FIG. 6a is usually 24 mm, which is an average value of the human eye, and the distance from the end point of the pupil to the center point of the shadow member 311 of the hinge module 30 The distance is indicated by the ER value. With this configuration, the rotation angle [theta] at which the goggle module 30 is rotated so that the user can look ahead without being disturbed by the visual line is detected by the guide member 311 of the hinge module 31 shown in 6a, And the circular arc distance S between the starting point A and the end point B of the point A and the end point B as shown in the following equations (1) to (2).

In Equations (1) to (3), ER means the distance from the tangential plane of the eye to the guide member.

According to another embodiment of the present invention, a spring hinge is applied to a head-mounted display having a spring-hinge type goggle secondary rotating structure, so that the goggle module can be used while being positioned at a vertical position of the eyeball.

FIG. 7A is a structural view showing an embodiment in which a goggle module is positioned at a vertical position of an eye in a head-mounted display having a goggle-type swing structure in the form of a spring hinge according to the present invention.

7B is a structural view showing an operation method according to an embodiment of the spring hinge module according to the present invention.

7C is a structural view showing an embodiment in which the goggle module is changed to the upper position of the eyeball in a head mount display having a spring hinge type goggle swing structure according to the present invention.

Referring to FIGS. 7A to 7C, the process of changing the goggle module to the upper position of the eye through the spring hinge is shown.

In the case where the above-described configuration of the present invention is applied, when the user desires an augmented reality, the head-mounted display goggles can be vertically disposed in front of the eyeball, thereby achieving the object of the seed- When the user desires to acquire information without being disturbed by the visual field, the user can easily obtain information by moving the head-mounted display goggle module simply by moving the head-mounted display goggle module upward.

In addition, the head-mounted display device having a goggle negative rotation structure according to the present invention has means for minimizing visual disturbance by rotating the goggle module upwardly so that the visual disturbance of the eyes The fatigue can be minimized.

Further, in the head-mounted display device having the goggle negative rotation structure according to the present invention, when the goggle module is rotated upward, a filter for blocking the external image transmitted in front of the goggle module is further disposed, So that it is possible to improve the immersion feeling as in a hermetically sealed head-mounted display.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission over the Internet) .

In addition, the computer-readable recording medium may be distributed over network-connected computer systems so that computer readable codes can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers of the technical field to which the present invention belongs.

It should be noted that the above-described apparatus and method are not limited to the configurations and methods of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments are selectively combined .

10: Goggle Module
101: exit surface
11: Hinge module
12: Controller module
13: frame
14: eyeball

Claims

A head mount display goggle module comprising at least one display and an optical module for delivering video light emitted from the at least one display to a user's eyeball;
A hinge module having guide means capable of rotating up and down with the center point of the eye as a rotation axis;
A controller module, connected to the hinge module, for generating an image signal and transmitting the image signal to the at least one display; And
And a frame coupled to the controller module and supporting the head mount display goggles module to be attached to the face of the user,
The image light is incident on the tangential surface of the pupil center of the eye vertically using the guiding means of the hinge module,
Wherein the rotational angle of the head mount display goggle module is determined according to an arc distance between a starting point and an end point of the guiding means of the hinge module,
Wherein the rotation angle is determined according to the following equation.
Equation

delete

The method according to claim 1,
Wherein the guide means is vertically rotated in a circular shape with the center point of the eyeball as a rotation axis,
Wherein the image light is incident on the tangent plane of the pupil center of the eye always vertically.

The method according to claim 1,
Characterized in that the frame is a frame having both side faces of the user nose as weight support points so that the head-mounted display goggle module is attached to the face of the user using self-elasticity and does not flow down. Head mounted display device.

The method according to claim 1,
Wherein the guide means has an arc shape of at least a part of a concentric circle having the center of gravity of the eyeball as a rotation axis.

delete