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WO2014077513A1 - Dispositif d'affichage monté sur tête (hmd) comprenant une unité de filtre convergent - Google Patents

Dispositif d'affichage monté sur tête (hmd) comprenant une unité de filtre convergent Download PDF

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Publication number
WO2014077513A1
WO2014077513A1 PCT/KR2013/008977 KR2013008977W WO2014077513A1 WO 2014077513 A1 WO2014077513 A1 WO 2014077513A1 KR 2013008977 W KR2013008977 W KR 2013008977W WO 2014077513 A1 WO2014077513 A1 WO 2014077513A1
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WIPO (PCT)
Prior art keywords
filter
hmd
capillary
filter unit
converging
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2013/008977
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English (en)
Korean (ko)
Inventor
하정훈
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Individual
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Individual
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Filing date
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Publication of WO2014077513A1 publication Critical patent/WO2014077513A1/fr
Anticipated expiration legal-status Critical
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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
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view

Definitions

  • the present invention relates to an HMD having a converging filter unit, and more particularly, to an HMD having a converging filter unit for displaying a display screen clearly regardless of the thickness of the lens.
  • HMD head mounted display
  • 1 and 2 are conceptual diagrams for explaining the state when viewing the object with the eyes.
  • the object 1 when the object 1 is at an appropriate distance from the eye, the light from the object passes through the cornea 2 and the lens 3 and then converges at a point on the retina 4 so that the object Looks sharper.
  • the object when the object is very close to the eye, for example, about 1 to 2 cm away from the eye, light emitted from the object 1 passes through the cornea 2 and the lens 3. After that, the point of convergence cannot be converged to one point of the retina 4, so that the object looks blurry.
  • the existing HMD substantially secures the optical path reaching the eye by reflecting the light from the display several times using an optical device such as a prism.
  • the HMD disclosed in “Patent Document 1” reflects light emitted from the display 5 through the free-curved prism 6, thereby forming a clear image on the retina.
  • Google Glass a Google-developed HMD, uses a method of increasing the actual light path by reflecting light several times inside the prism.
  • MOVERIO BT-100 an HMD developed by Abson, refracts and reflects light from a beam projector (display) and sends it to the eyes, allowing clear images to form on the retina.
  • the HMD of the above method has a depth when viewing the display screen (generally, the depth means the distance to a subject where a clear image can be formed), and thus, the user must adjust the thickness of the lens to match the depth of the image. You can watch the video. Therefore, when the user views the actual external environment and the display screen at the same time, when the user focuses on the external environment, the display screen is blurred, and when the user focuses on the display screen, the external environment is blurred. Therefore, HMD of the above method is difficult to see the actual external environment and the display screen at the same time is disadvantageous for the implementation of augmented reality.
  • the HMD of the above method includes a bulky and heavy optical device such as a prism, it is difficult to maintain the wearing state of the HMD due to the weight of the HMD, and there is a problem in that the user feels uncomfortable when wearing the HMD.
  • Patent Document 1 KR 10-2009-0099576 A (2009. 09. 22.)
  • the present invention has been made to solve the above problems, the problem to be solved in the present invention is to provide an HMD that can see the actual external environment and the display screen at the same time clearly and light weight.
  • HMD having a convergent filter unit according to the present invention for solving the above problems is the body portion;
  • HMD having a convergent filter unit according to the present invention has the advantage of being able to clearly see the actual external environment and the display screen at the same time and light weight.
  • 1 and 2 is a conceptual diagram for explaining the state when viewing the object with the eyes
  • FIG. 3 is a conceptual diagram of a conventional HMD
  • FIG. 4 is a perspective view of an HMD having a converging filter unit according to the present invention.
  • Figure 5 is a vertical cross-sectional view of the HMD having a converging filter unit according to the present invention
  • FIG. 6 shows a first embodiment of a convergent filter part according to the present invention.
  • FIG. 7 shows a second embodiment of the convergent filter part according to the present invention.
  • FIGS. 8 to 12 are conceptual diagrams for explaining the use state of the HMD having a convergent filter unit according to the present invention.
  • FIG. 4 is a perspective view of an HMD having a converging filter part according to the present invention
  • FIG. 5 is a vertical sectional view of an HMD having a converging filter part according to the present invention.
  • the HMD having the convergent filter unit according to the present invention includes a body unit 10, a convergent filter unit 20, and a display unit 30.
  • the body portion 10 of the HMD having a converging filter portion according to the present invention is composed of a frame 12 and the lens 14 of the eyeglass frame shape, the center of the lens 14
  • the convergent filter unit 20 and the display unit 30 are installed.
  • the convergent filter unit 20 and the display unit 30 are provided in both the left and right lenses 14, but only one lens 14 has the convergent filter unit 20 and the display unit 30. ) May be installed.
  • the lens 14 on which the convergent filter unit 20 and the display unit 30 are installed is formed of an opaque plastic material or the like so that the external environment is not visible toward the convergent filter unit 20 and the display unit 30. You can only see the display screen.
  • the frame 12 has a spectacle frame shape that is easy for a user to wear, and firmly supports the lens 14.
  • the material of the frame 12 may be metal or synthetic resin like general glasses.
  • the lens 14 is a concave lens, a convex lens, or a flat lens without a degree of power, like a lens of ordinary glasses, and may be a colored lens such as a lens of sunglasses.
  • Fig. 6 is a first embodiment of the convergent filter part according to the present invention.
  • Fig. 6 (a) is a perspective view of the first embodiment, and
  • Fig. 6 (b) is a sectional view of the first embodiment.
  • the converging filter unit 20 is a component that filters incident light so as to converge to a point (A, hereinafter, 'focal') in space, and a capillary tube in which a plurality of capillary tubes 21 are inclined at a predetermined angle. It comprises one or more filters 22.
  • the capillary filter 22 is an optical member through which the capillaries 21 are arranged at predetermined intervals so as to pass only light that can go straight through the capillary tube 21.
  • the capillary filter 22 filters the light incident to the capillary filter 22 to form a center of the capillary tube 21. Only pass components parallel to the axis.
  • the reason for the blurring of an object is that when light emitted from the object passes through the lens and forms in the retina, as shown in FIG. 2, the light converges at one point of the retina because light is introduced into the eye over the entire area of the pupil. Because you can not.
  • the light passing through the capillary filter 22 is limited to a very narrow beam width has the same effect as convergence at one point when reaching the retina. It is as if light is introduced only along the upper dotted line of FIG. 2.
  • the capillary filter 22 passes light only at the portion where the capillary tube 21 is formed and the rest should block light, the material must be an opaque material through which light cannot pass, and the capillary tube 21 is connected to the capillary filter 22. It is preferable that it is a formed cylinder-shaped or polygonal-shaped hole.
  • the capillary tube 21 does not have to be a hollow structure, and only needs to be able to transmit light, so that the transparent medium may be filled in a cylindrical or polygonal hole.
  • the capillary tube 21 is filled with a transparent medium in a cylindrical or polygonal hole, there is an advantage that the capillary tube 21 is more resistant to impact on the side than when the capillary tube 21 has a hollow structure.
  • the capillary filter 22 may have a structure in which each capillary tube 21 is inclined at a predetermined angle so that an extension line extending in the longitudinal direction of the capillary tube 21 may be collected at a focal point.
  • the reason why the capillary tube 21 is formed to be inclined at a predetermined angle is that the light passing through the capillary filter 22 travels in the direction of the central axis of the capillary tube, so that the light passing through each capillary tube 21 is collected at one point. To get into the eye. This light propagation is also possible with the combination of the capillary filter 22 and the convex lens of another embodiment.
  • Fig. 7 is a second embodiment of the convergent filter part according to the present invention
  • Fig. 7 (a) is a perspective view of the second embodiment
  • Fig. 7 (b) is a sectional view of the second embodiment. Since light passing through the capillary filter 22 shown in FIG. 7 proceeds in parallel after passing through the capillary tube 21, all of the light cannot flow into the eye. Therefore, by passing the parallel light passing through the capillary tube 21 through the convex lens 24 installed in front of the capillary filter 22, the light passing through each capillary tube 21 can be collected at the focal point A and flow into the eye. Make sure
  • the converging filter part 20 may be formed of only one or more capillary filters 22 formed so that the extension lines of the central axis of the capillary tube 21 are concentrated at the focal point, or one or more capillary filters 22 having the capillary tubes 21 parallel to each other.
  • a convex lens 24 provided on the front surface of the capillary filter 22. Since the optical properties of these embodiments do not differ greatly, the following description will focus on the first embodiment.
  • the display unit 30 may be implemented as LCD, LED, or OLED.
  • a control unit and a power supply unit are required, but this can be easily implemented by a person of ordinary skill in the art and is not a technical feature of the present invention.
  • the eyeball B has a lens B1, a pupil B2, and a retina B3.
  • the focal point of the converging filter unit 20 is located in the pupil B2, when the position of the pupil B2 is changed by moving the eyeball B, light passing through the converging filter unit 20 cannot be introduced into the eye. . That is, even if the eyeball B is moved a little, the display screen is invisible. Therefore, as shown in FIG. 9, the focal point A is preferably located behind the pupil B2. In this case, even though the eye B is slightly moved, the light passing through the converging filter unit 20 can enter through the pupil B2, so that eyes can see the display screen. That is, when the focal point A of the convergent filter unit 20 is positioned behind the pupil B2, the range in which the eyeball B can move is increased.
  • the focal point A of the converging filter unit 20 when the focal point A of the converging filter unit 20 is positioned ahead of the pupil B2, the light passing through the converging filter unit 20 may move even if the eye B is slightly moved.
  • the eyes can see the display screen by entering through the pupil B2, but there is a problem that the moving direction of the eyeball B and the moving direction of the display screen are different. For example, when the eyeball B is moved to the right, the screen on the left side is displayed more than the original display screen.
  • a plurality of capillary filters 22 may be installed to allow light passing through each capillary filter 22 to converge at different focal points A1, A2, and A3 (FIG.
  • the capillary filter 22 is divided into three parts for the sake of simplicity, but in actual application, the capillary filter 22 is divided into three parts horizontally and three parts vertically so that a total of nine capillary filters 22 are installed and each Light passing through capillary filter 22 can be converged to different foci.
  • each capillary filter 22 may be installed for each capillary filter 22, or only one display unit may be installed as illustrated in FIG. 11.
  • the display unit 30 is preferably a transparent display.
  • the display unit 30 is a transparent display, a part of the light passing through the display unit 30 is blocked by the converging filter unit 20 and the display unit 30, but some of the light is blocked by the converging filter unit 20 and the display. Since the display unit 30 passes through the display unit 30, the user can see the subject behind the display unit 30.
  • the lens 14 may be a convex lens. Since the light b incident to) may normally reach the pupil B2, the user may see the subject behind the display unit 30.
  • the light from the actual external environment (subject) and the light from the display screen overlap the retina, and the user can recognize the actual external environment (subject) and the display screen at the same time, which is advantageous for implementing augmented reality.
  • the display screen has no depth, a clear display screen can be seen even if the user's eyes change the thickness of the lens in accordance with the actual external environment.
  • the convergent filter unit 20 and the display unit 30 may be provided only in one lens 14 of the two left and right lenses 14 of the HMD having the convergent filter unit.
  • the eye of the side where the convergent filter unit 20 and the display unit 30 are installed can see the display screen, and the opposite eye can see the actual external environment.
  • the convergent filter unit 20 and the display unit 30 are installed in the left lens 14 and the convergent filter unit 20 and the display unit 30 are not installed in the right lens 14, Can see the display screen and the right eye can see the actual external environment.
  • the lens thickness of the right eye changes in accordance with the distance from the external object to the right eye, the thickness of the lens of the left eye may be unknowingly changed.
  • the HMD having the converging filter unit according to the present invention Even when the lens thickness of the eye changes, the display screen may be clearly recognized. This is because the light from the display unit 30 passes through the converging filter unit 20 and the depth becomes infinite.
  • the HMD having the convergent filter unit according to the present invention may provide different display screens on the left and right sides when the convergent filter unit 20 and the display unit 30 are installed in each of the left and right lenses 14, the parallax may be reduced.
  • lens 20 convergent filter unit
  • capillary 22 capillary filter

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

Selon la présente invention, un dispositif d'affichage monté sur tête (HMD) comprenant une unité de filtre convergent comprend : une unité (10) de corps principal ; une unité (20) de filtre convergent disposée dans l'unité (10) de corps principal ; et une unité (30) d'affichage disposée sur la surface avant de l'unité (20) de filtre convergent et ayant une pluralité de pixels (32). L'unité (20) de filtre convergent a un ou plusieurs filtres (22) à tubes capillaires dans lesquels une pluralité de tubes (21) capillaires sont formés, et une lumière filtrée par les filtres (22) à tubes capillaires est convergée en un point dans l'espace de chacun des filtres (22) à tubes capillaires. Par conséquent, il est possible de fournir un HMD qui est léger et autorise des environnements externes réels et un écran d'affichage à être clairement observés simultanément.
PCT/KR2013/008977 2012-11-16 2013-10-08 Dispositif d'affichage monté sur tête (hmd) comprenant une unité de filtre convergent Ceased WO2014077513A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2012-0130373 2012-11-16
KR20120130373 2012-11-16

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WO2014077513A1 true WO2014077513A1 (fr) 2014-05-22

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PCT/KR2013/008977 Ceased WO2014077513A1 (fr) 2012-11-16 2013-10-08 Dispositif d'affichage monté sur tête (hmd) comprenant une unité de filtre convergent

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018185218A3 (fr) * 2017-04-05 2018-11-29 Osram Opto Semiconductors Gmbh Dispositif de représentation d'une image

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5883606A (en) * 1995-12-18 1999-03-16 Bell Communications Research, Inc. Flat virtual displays for virtual reality
KR20040040051A (ko) * 2002-11-06 2004-05-12 삼성전자주식회사 머리장착형 표시장치
KR20100020565A (ko) * 2008-08-13 2010-02-23 포항공과대학교 산학협력단 안경형 디스플레이 장치
JP2011501822A (ja) * 2007-10-16 2011-01-13 北京寧靜▲海▼科技有限公司 表示装置及びその表示方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5883606A (en) * 1995-12-18 1999-03-16 Bell Communications Research, Inc. Flat virtual displays for virtual reality
KR20040040051A (ko) * 2002-11-06 2004-05-12 삼성전자주식회사 머리장착형 표시장치
JP2011501822A (ja) * 2007-10-16 2011-01-13 北京寧靜▲海▼科技有限公司 表示装置及びその表示方法
KR20100020565A (ko) * 2008-08-13 2010-02-23 포항공과대학교 산학협력단 안경형 디스플레이 장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018185218A3 (fr) * 2017-04-05 2018-11-29 Osram Opto Semiconductors Gmbh Dispositif de représentation d'une image

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