WO2017113189A1 - 头戴式显示装置 - Google Patents

头戴式显示装置 Download PDF

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Publication number
WO2017113189A1
WO2017113189A1 PCT/CN2015/099869 CN2015099869W WO2017113189A1 WO 2017113189 A1 WO2017113189 A1 WO 2017113189A1 CN 2015099869 W CN2015099869 W CN 2015099869W WO 2017113189 A1 WO2017113189 A1 WO 2017113189A1
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WO
WIPO (PCT)
Prior art keywords
infrared
module
diopter
display device
head
Prior art date
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/CN2015/099869
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English (en)
French (fr)
Inventor
施宏艳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Royole Technologies Co Ltd
Original Assignee
Shenzhen Royole Technologies Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Royole Technologies Co Ltd filed Critical Shenzhen Royole Technologies Co Ltd
Priority to CN201580073420.5A priority Critical patent/CN107209377B/zh
Priority to EP15911818.1A priority patent/EP3399362A4/en
Priority to PCT/CN2015/099869 priority patent/WO2017113189A1/zh
Priority to JP2018530547A priority patent/JP6665301B2/ja
Priority to US16/067,585 priority patent/US20190004281A1/en
Priority to KR1020187017024A priority patent/KR102078491B1/ko
Publication of WO2017113189A1 publication Critical patent/WO2017113189A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G02B2027/0181—Adaptation to the pilot/driver
    • 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
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
    • G02B27/0068—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration having means for controlling the degree of correction, e.g. using phase modulators, movable elements

Definitions

  • the present invention relates to the field of head-mounted display devices, and in particular, to a head-mounted display device.
  • head-mounted display devices have gradually become civilian, providing a high-quality visual experience for more and more people.
  • existing head-mounted display devices are required to be able to correct the eyes of the user.
  • the second is to manually adjust the diopter.
  • the head-mounted display device includes a magnifying lens that can change the focal length. The user can manually correct the focal length of the magnifying lens and change the working distance after the lens to achieve eye correction.
  • the disadvantage of the second method is that it is difficult for non-professional adjustments to accurately adjust to match their own diopter, resulting in long-term wear of the device to damage the eyes.
  • the manual adjustment process of the second method is cumbersome, and the imaging lens design determines the diopter adjustment range. Once the design is determined, the adjustment range is immutable, inflexible, and the adjustment range is limited by lens design and space design.
  • the embodiment of the invention discloses a head-mounted display device, which can automatically detect the diopter of the wearer's eyes, and determine whether the diopter standard threshold is met according to the detection parameter, and if not, control the diopter adjustment module to adjust to wear The diopter of the eye is corrected to be normal and suitable for different people.
  • a head-mounted display device includes a display module for projecting a display screen to a direction of exiting according to a preset optical path.
  • the head mounted display device further includes a diopter detection module, a diopter adjustment module, and a controller.
  • the diopter detection module is configured to detect a parameter in which the direction of the pupil reflects the diopter.
  • the diopter adjustment module is configured to adjust a focal length of the optical path.
  • the controller is configured to determine whether the diopter standard threshold is met according to the detection parameter of the diopter detection module, and if not, control the diopter
  • the adjustment module adjusts and continuously obtains the parameters detected by the diopter detection module during the adjustment of the diopter adjustment module until the diopter standard threshold is determined according to the parameters detected by the diopter detection module.
  • the head-mounted display device of the embodiment of the invention can automatically detect the diopter of the wearer's eyes and detect whether the parameter meets the diopter standard threshold. If not, the diopter adjustment module is adjusted to adjust the diopter of the wearer's eye. Corrected to normal and suitable for different groups of people.
  • FIG. 1 is a schematic block diagram of a head mounted display device according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural view of the head mounted display device of FIG. 1;
  • FIG. 3 is a schematic structural view of a transmitting module of the head mounted display device of FIG. 1;
  • FIG. 4 is a schematic structural view of a receiving module of the head mounted display device of FIG. 1.
  • FIG. 1 is a schematic diagram of a module of a head mounted display device 100 according to an embodiment of the invention.
  • the head mounted display device 100 includes a diopter detection module 10, a diopter adjustment module 20, a display module 30, and a controller 40.
  • the display module 30 is configured to project the display screen to the direction of the exit pupil according to the preset optical path.
  • the wearer's eye 200 corresponds to the optical exit of the display module 30 in the wearable display device.
  • the sputum will be illustrated below with the wearer's eye 200.
  • the diopter detecting module 10 is configured to detect a parameter reflecting the diopter of the wearer's eye 200 in the direction of the sputum.
  • the controller 40 is configured to detect the module 10 according to the diopter
  • the detected parameter determines whether the diopter standard threshold is met, that is, whether the diopter of the wearer's eye 200 is normal, and when it is determined that the diopter standard threshold is not met, that is, when the diopter of the wearer's eye 200 is determined to be abnormal, the diopter adjustment is controlled.
  • the module 20 adjusts the focal length of the preset optical path, and continuously obtains the parameters detected by the diopter detection module 10 during the adjustment of the diopter adjustment module 20 until the parameters detected by the diopter detection module 10 are determined.
  • the diopter standard threshold is met, that is, the wearer's eye 200 has been corrected to normal.
  • the display module 30 is configured to generate a display screen for the wearer to view after the diopter adjustment module 20 corrects the diopter to normal.
  • FIG. 2 is a schematic diagram of a specific structure of the head mounted display device 100 according to an embodiment of the invention.
  • the diopter detecting module 10 includes a transmitting module 11 and a receiving module 12 .
  • the transmitting module 11 is configured to emit a near-infrared light to the exit pupil of the head mounted display device 10, that is, the wearer wears the head mounted display device 100 and projects the eye 200 to the wearer.
  • the receiving module 12 The near-infrared light reflected by the direction of the pupil, that is, the near-infrared light reflected by the near-infrared light of the transmitting module 11 of the wearer's eye 200, the near-infrared light received by the receiving module 12 is the reflected wear The parameter of the eye diopter.
  • the diopter adjustment module 20 includes a drive element 22, a concave lens 23, and a convex lens 24.
  • the controller 40 is configured to determine whether it is necessary to perform diopter correction on the wearer's eyes according to the near-infrared light received by the receiving module 12, and correspondingly control the driving component 22 to drive when determining that the diopter of the wearer's eyes needs to be corrected.
  • the concave lens 23 or the convex lens 24 acts on the optical path, for example, directly in front of the wearer's eyes, and the controller 40 controls the concave lens 23 or the convex lens 24 to perform focusing, for example, moving toward or away from the wearer's eye until the wear is received according to the receiving module 12.
  • the near-infrared light reflected by the retina of the eye of the eye determines that the refractive power of the current wearer's eyes is normal.
  • the transmitting module 11 includes a near infrared ray emitter 111 and a small aperture stop 112.
  • the near-infrared emitter 111 is configured to generate near-infrared light and form a near-infrared aperture spot through the aperture stop 112 for projection to the wearer's eye 200, the receiving module 12 for receiving the retina of the wearer's eye The near-infrared aperture spot that is reflected.
  • the near-infrared emitter 111 is disposed on the side of the wearer's eye 200 for viewing the line of sight, and the diopter detecting module 10 further includes a first half-reverse. Semi-permeable element 13.
  • the first semi-transparent element 13 is located between the wearer's eye and the receiving module 12 and the reflective plane of the first semi-transparent element 13 and the first transmitting module
  • the direction of the near-infrared light generated by 11 is relatively and at an angle.
  • the first half anti-semi-transparent element 13 is used to reflect the near-infrared light emitted by the transmitting module 11 to the wearer's eye and to allow the near-infrared light reflected by the retina of the wearer's eye to be transmitted to the receiving module 12.
  • the near-infrared light generated by the near-infrared emitter 111 is formed by the aperture stop 112 to form a near-infrared aperture spot, and then projected to the first transflective element 13 by the first semi-transparent element 13
  • the near-infrared aperture spot is reflected to the wearer's eye.
  • the aperture stop 112 is an optically insulating baffle with a through hole in the middle, and the near-infrared light can pass only through the intermediate through hole, so that the near-infrared light emitted by the near-infrared emitter 111 passes through the small hole.
  • the near-infrared aperture spot is formed after the aperture 112.
  • the diameter of the through hole of the aperture stop is 0.1 mm.
  • the transmitting module 11 and the receiving module 12 may be on the same side, that is, facing one side of the wearer's eye 200, multiplexing the optical propagation path in a time division multiplexing manner, the first The transflective element 13 can be omitted.
  • a near-infrared aperture spot reflected by the retina of the wearer's eye 200 passes through the first semi-transparent element 13 and is transmitted to the receiving module 12.
  • the receiving module 12 includes a near-infrared receiver 121 for receiving a near-infrared aperture spot reflected by the wearer's retina. More precisely, the near-infrared aperture spot received by the receiving module 12 is a parameter that reflects the wearer's eye diopter.
  • the controller 40 determines whether the eye 200 of the wearer is a normal eye, nearsightedness or farsightedness according to the size of the near-infrared aperture spot received by the near-infrared receiver 121, that is, whether the diopter of the wearer's eye is normal. Wherein, when the spot diameter of the spot received by the near-infrared receiver 121 is 0.1 mm (mm), the controller 40 determines that the wearer's eyes are normal eyes, that is, it is not necessary to perform diopter correction on the eyes of the wearer.
  • the spot having a diameter of 0.1 mm is the standard standard of the diopter.
  • the controller 40 determines that the refractive error of the wearer's eyes is abnormal, that is, myopia or hyperopia, and diopter correction is required. Specifically, when the diameter of the spot received by the receiving module 12 is greater than 0.1 mm, the controller 40 determines that the wearer's eyes are farsighted, and when the spot size received by the near-infrared receiver 121 is less than 0.1 mm, the wearer's Eyes are near Eyes.
  • the near-infrared receiver 121 may be a focus detector, a CCD (Charge Coupled Device), and the near-infrared receiver 121 acquires a position of a near-infrared ray projected by the retina of the wearer's eye 200, and the controller 40 Calculate the distance between the position and the reference center, that is, get the spot radius, multiply by 2 to get the diameter of the spot.
  • CCD Charge Coupled Device
  • the driving element 22 is a small-sized motor, such as an ultrasonic motor.
  • the wearable display device 100 can be a wearable smart glasses.
  • the initial state of the concave lens 23 and the convex lens 24 is rotated to a position other than the optical path of the wearable display device 100, for example, in the vicinity of the upper frame, and does not act on the optical path.
  • the control drive element 22 drives the concave lens 23 to rotate directly in front of the wearer's eyes and controls the drive element 22 to drive the The concave lens 23 moves relative to the wearer's eye until it is determined that the spot diameter received by the receiving module 12 is equal to 0.1 mm.
  • the control drive element 22 drives the convex lens 24 to rotate directly in front of the wearer's eye and controls the drive element 22 to drive the concave lens 24 to move relative to the wearer's eye until a determination is received.
  • Module 12 receives a spot diameter equal to 0.1 mm.
  • the size of the near-infrared aperture spot received by the receiving module 12 in real time also changes in real time during the movement of the concave lens 23 or the convex lens 24.
  • the controller 40 acquires the near-infrared aperture spot received by the receiving module 12 in real time, and It is judged whether the diameter of the current near-infrared aperture spot is equal to 0.1 mm, and if not equal, the concave lens 23 or the convex lens 24 is continuously controlled to move toward or away from the wearer's eye until the diameter of the current near-infrared aperture spot is equal to 0.1 mm.
  • the concave lens 23 and the convex lens 24 can be mounted on a shaft (not shown) parallel to the line of sight of the wearer and can be rotated relative to the axis by the driving member 22 so as to be located directly in front of the wearer's eyes (ie, Corresponding to the position of the exit pupil and acting on the enabled position of the optical path as a correcting element, or rotating outside the line of sight of the wearer's eye to be in a non-activated position to not act on the optical path; the concave lens 23 and the convex lens 24 and Movement along the axis is driven by the drive element 22 to move closer to or away from the wearer's eye.
  • the concave lens 23 and the convex lens 24 are coated with a visible light near-infrared broadband antireflection material on both sides.
  • the first semi-transparent element 13 can also be provided with soft natural white light illumination to make the human eye in a relaxed state, so as to reduce the detection error.
  • the transmitting module 11 further includes a light source collimating module 113 between the small aperture stop 112 and the near infrared ray emitter 111.
  • the light source collimation module 113 is configured to collimate the near-infrared light emitted by the near-infrared emitter 111 into parallel rays, and then form a near-infrared aperture spot through the aperture stop 112.
  • the light source collimating module 113 includes a concave lens 114 and a convex lens 115.
  • the concave lens 114 and the convex lens 115 are sequentially arranged in a path of near-infrared light emitted by the near-infrared emitter 111, and the concave lens 114 is adjacent to the near-infrared emitter. 111 settings.
  • the concave lens 114 and the convex lens 115 select a material having a high near-infrared transmittance and a double-sided near-infrared anti-reflection film.
  • the light source collimation module 113 is only better for the purposes of the present invention and may be omitted in some embodiments.
  • the receiving module 12 further includes a focusing module 122 for small near-infrared reflection of the near-infrared aperture spot reflected by the wearer's eye before reaching the near-infrared receiver 121.
  • the hole spot is focused.
  • the focusing module 122 includes a filter 1221, two convex lenses 1222, 1223, and a near-infrared total reflection mirror 1224.
  • the filter 1221, the convex lens 1222, the near-infrared total reflection mirror 1224, and the convex lens 1223 are sequentially arranged in the near-infrared aperture spot reflected by the wearer's eye to the light propagation path of the near-infrared receiver 121.
  • the filter 1221 is a narrow-band filter, and only allows the near-infrared light emitted by the near-infrared emitter 111 to pass through the wavelength of light, the half-band is less than 20 nm, and the other bands are cut off to prevent other bands of light from entering the system to interfere with the test result.
  • the convex lens 1222 is used to perform the first focusing of the near-infrared light of the filtered light piece 1221.
  • the near-infrared total reflection mirror 1224 is configured to reflect the aperture of the near-infrared light that has been focused by the convex lens 1222 for the first time to the convex lens 1223, and then perform the second focusing through the convex lens 1223 and then transmit the signal to the near lens.
  • Infrared receiver 121 is a narrow-band filter, and only allows the near-infrared light emitted by the near-infrared emitter 111 to pass through the wavelength of light, the half-band is less than
  • the focusing module 122 is also only better for the purposes of the present invention and may be omitted in some embodiments.
  • the display module 30 includes a display 31 and an optical module 302 .
  • the display 31 is configured to generate a display screen
  • the optical module 302 is configured to project the display screen to a direction of the exit pupil according to a preset optical path.
  • the optical module 302 includes a second transflective element 32 that is located directly in front of the wearer's eye and is at 45 degrees to the light of the display generated by the display 31.
  • the second half The anti-transparent element 32 is used to reflect the display to the wearer's eyes so that the wearer can view the display.
  • the display 31 is a micro display for providing a display source including a display image.
  • the display source forms an enlarged virtual image through a specific optical lens group (not labeled) and projects to the wearer according to a preset path. eye.
  • the predetermined path is a path that is reflected by the second semi-transparent element 32 to the wearer's eye. It can be understood that, in other embodiments, the position of the display 31 and the angle of the second semi-transparent element 32 relative to the display 31 can be flexibly set as long as the second semi-transparent element 32 projects the light of the display source of the display 31 to The direction of the wearer's eyes 200 is sufficient.
  • the second transflective element 32 is located behind the diopter adjustment module 20, that is, further away from the wearer's eye 200 with respect to the concave lens 23 or the convex lens 24 of the diopter adjustment module 20.
  • the first semi-transparent element 13 is plated on the one side of the wearer's eye 200 with a near-infrared transflective material, and the other side is plated with a visible near-infrared broadband anti-reflection material at an incident angle of 45°.
  • One side of the second semi-transparent element 32 facing the wearer's eye 200 is plated with a visible light full-reflective material, and the other side is coated with a visible light-reflecting material at an incident angle of 45°.
  • the wearable display device 100 further includes a protective sheet 50 located on the side closest to the wearer's eye 200 as a dustproof function of the entire optical path system, and double-sided coated visible light near-infrared broadband. Increased penetration, the angle of incidence is 0 °.
  • the head mounted display device 100 of the present invention can automatically detect the diopter of the wearer's eyes 200 and select the display screen projected by the wearer's eyes 200 and the display module 30 when the diopter of the wearer's eyes 200 is abnormal.
  • the concave lens 23 or the convex lens 24 is added and adjusted so that the diopter of the wearer's eye 200 is corrected to be normal, and is suitable for use by different people.
  • the head mounted display device 100 further includes other components, such as a sound output unit and the present
  • the sound frame is used to output a sound signal synchronized with the display screen.
  • the body frame is used to carry all the components described above, and is not described herein because it is not related to the improvement of the present invention.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)

Abstract

一种头戴式显示装置（100），包括显示模组（30）、屈光度侦测模组（10）、屈光度调节模组（20）以及控制器（40）。显示模组（30）用于按预设光路投射显示画面至出瞳的方向。该屈光度侦测模组（10）用于侦测出瞳的方向反映屈光度的参数。该屈光度调节模组（20）用于调节所述光路的焦距。该控制器（40）用于根据屈光度侦测模组（10）的侦测参数判断是否符合屈光度标准阈值，如果否，控制屈光度调节模组（20）进行调节，并持续获取屈光度调节模组（20）调节过程中屈光度侦测模组（10）侦测的参数，直到根据屈光度侦测模组（10）侦测到的参数判断符合屈光度标准阈值。头戴式显示装置（100）可侦测穿戴者的眼睛（200）的屈光度，并在穿戴者眼睛（200）的屈光度屈光不正时，自动进行屈光度矫正，适合不同人群的使用。

Description

头戴式显示装置 技术领域
本发明涉及一种头戴显示设备技术领域，尤其涉及一种头戴式显示装置。
背景技术
随着科技的发展，头戴式显示设备已逐渐民用化，为越来越多的人提供高品质的视觉体验。为了满足有近视眼或远视眼的用户的需要，现有的头戴显示设备都要求能够对用户的眼睛进行矫正。目前，针对近视眼或远视眼的处理方式有两种：第一种是兼容配戴校正眼镜后再配戴所述头戴式显示设备，然而，此种方法的缺点是佩戴时会有压迫感，导致不舒适。第二种是依靠手动调节屈光度，通常是头戴式显示设备包括一可改变焦距的放大镜头，依靠用户手动去改变放大镜头的焦距和改变镜头后工作距离来实现眼睛的矫正。然而，第二种方式的缺点是非专业人士调整很难准确调整至匹配自己的屈光度，导致长时间配戴设备损害眼睛。另外，第二种方式的手动调整过程繁琐，且成像镜头设计决定了屈光度调整范围，一旦设计确定，调整范围即不可变，不灵活，且调整范围受镜头设计和空间设计限制。
发明内容
本发明实施例公开了一种头戴式显示装置，可自动侦测穿戴者眼睛的屈光度，并根据侦测参数判断是否符合屈光度标准阈值，如果否，控制屈光度调节模组进行调节，以使得穿戴者眼睛的屈光度矫正为正常，而适合不同的人群使用。
本发明实施例公开的一种头戴式显示装置，包括显示模组，用于按预设光路投射显示画面至出瞳的方向。其中，头戴式显示装置还包括屈光度侦测模组、屈光度调节模组以及控制器。该屈光度侦测模组用于侦测出瞳的方向反映屈光度的参数。该屈光度调节模组用于调节所述光路的焦距。该控制器用于根据屈光度侦测模组的侦测参数判断是否符合屈光度标准阈值，如果否，控制屈光度 调节模组进行调节，并持续获取屈光度调节模组调节过程中屈光度侦测模组侦测的参数，直到根据屈光度侦测模组侦测到的参数判断符合屈光度标准阈值。
本发明实施例的头戴式显示装置,可自动侦测穿戴者眼睛的屈光度，并侦测参数判断是否符合屈光度标准阈值，如果否，控制屈光度调节模组进行调节，以使得穿戴者眼睛的屈光度矫正为正常，而适合不同的人群使用。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的明显变形方式。
图1为本发明公开的一实施例中的头戴式显示装置的模块示意图；
图2为图1中的头戴式显示装置的结构示意图；
图3为图1中头戴式显示装置的发射模块的结构示意图；
图4为图1中头戴式显示装置的接收模块的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参考图1，为本发明一实施例中的头戴式显示装置100的模块示意图。该头戴式显示装置100包括屈光度侦测模组10、屈光度调节模组20、显示模组30及控制器40。显示模组30用于按预设光路投射显示画面至出瞳的方向。当穿戴者佩戴该头戴式显示装置100后，穿戴者的眼睛200对应到该穿戴式显示装置中显示模组30的光学出瞳。为了形象说明本发明方案，以下将以穿戴者的眼睛200来示意出瞳。该屈光度侦测模组10用于侦测出瞳的方向的反映穿戴者眼睛200的屈光度的参数。该控制器40用于根据屈光度侦测模组10 的侦测的参数判断是否符合屈光度标准阈值，即判断穿戴者的眼睛200的屈光度是否正常，并在判断不符合屈光度标准阈值时，即判断穿戴者的眼睛200的屈光度不正常时，控制屈光度调节模组20对所述预设光路的焦距进行调节，并持续获取屈光度调节模组20调节过程中屈光度侦测模组10侦测的参数，直到根据屈光度侦测模组10侦测到的参数判断符合屈光度标准阈值为止，即穿戴者的眼睛200已经矫正为正常为止。该显示模组30用于在屈光度调节模组20将屈光度矫正为正常后，产生显示画面供穿戴者观看。
请一并参考图2，图2为发明一实施例中的头戴式显示装置100的具体结构示意图。该屈光度侦测模组10包括发射模块11以及接收模块12。其中，该发射模块11用于发射一近红外光至头戴式显示装置10的出瞳的方向，即穿戴者佩戴该头戴式显示装置100后投射至穿戴者的眼睛200，该接收模块12用于接收出瞳的方向所反射的近红外光，即穿戴者眼睛200的视网膜根据发射模块11的近红外光所反射的近红外光，该接收模块12接收的近红外光即为该反映穿戴者眼睛屈光度的参数。
该屈光度调节模组20包括驱动元件22、凹透镜23以及凸透镜24。该控制器40用于根据接收模块12接收的近红外光判断是否需要对穿戴者的眼睛进行屈光度矫正，并在判断需要对穿戴者的眼睛的屈光度进行矫正时，相应控制该驱动元件22去驱动凹透镜23或凸透镜24作用于光路，例如位于穿戴者眼睛的正前方，控制器40并相应控制凹透镜23或凸透镜24进行调焦，例如靠近或远离穿戴者眼睛移动，直到根据接收模块12接收的穿戴者的眼睛视网膜反射的近红外光判断当前穿戴者的眼睛的屈光正常为止。
在本实施方式中，该发射模块11包括近红外线发射器111以及小孔光阑112。该近红外线发射器111用于产生近红外光，并通过该小孔光阑112形成一近红外小孔光斑后投射至穿戴者的眼睛200，该接收模块12用于接收穿戴者的眼睛的视网膜所反射的近红外小孔光斑。
具体的，如图2所示，在本实施方式中，该近红外线发射器111为设置在穿戴者眼睛200观看视线方向的侧边，该屈光度侦测模组10还包括第一半反 半透元件13。其中，当头戴式显示装置100被穿戴时，第一半反半透元件13位于穿戴者的眼睛与接收模块12之间且第一半反半透元件13的反射平面与第一该发射模块11产生的近红外光的方向相对且呈一定角度。第一半反半透元件13用于将该发射模块11发射的近红外光反射至穿戴者的眼睛，并允许穿戴者的眼睛的视网膜反射的近红外光传递至接收模块12。
该近红外线发射器111产生的近红外光通过该小孔光阑112形成近红外小孔光斑后投射至该第一半反半透元件13，而通过该第一半反半透元件13将该近红外小孔光斑反射至穿戴者的眼睛。其中，该小孔光阑112为一中间有通孔的光绝缘挡板，该近红外光仅能通过该中间的通孔通过，而使得近红外线发射器111发射的近红外光通过该小孔光阑112后形成该近红外小孔光斑。其中，在本实施方式中，该小孔光阑的通孔的直径为0.1mm。其中，在另一实施方式中，该发射模块11与接收模块12可处于同一侧，即，正对穿戴者眼睛200的一侧，采用分时复用的方式复用光传播路径，该第一半反半透元件13可省略。
穿戴者的眼睛200的视网膜反射的近红外小孔光斑穿过该第一半反半透元件13后发射给该接收模块12。该接收模块12包括一近红外接收器121，该近红外接收器121用于接收该穿戴者的视网膜反射的近红外小孔光斑。更准确的说，该接收模块12接收的近红外小孔光斑为该反映穿戴者眼睛屈光度的参数。
该控制器40根据近红外接收器121接收的近红外小孔光斑的大小来判断穿戴者的眼睛200是否为正常眼，近视或远视，即判断穿戴者的眼睛的屈光度是否正常。其中，该控制器40在近红外接收器121接收到的的光斑直径＝0.1mm(毫米)时，判断穿戴者的眼睛为正常眼，即无需对穿戴者的眼睛进行屈光度矫正。该直径为0.1mm的光斑即为该屈光度标准阈值。该控制器40在近红外接收器121接收到的光斑直径不等于0.1mm时，判断穿戴者的眼睛的屈光不正常，即为近视或远视，而需要进行屈光度矫正。具体的，该控制器40在接收模块12接收到的光斑直径大于0.1mm时，判断穿戴者的眼睛为远视眼，在近红外接收器121接收到的光斑直径小于0.1mm时，判断穿戴者的眼睛为近 视眼。
其中，该近红外接收器121可以为焦点探测仪、CCD(Charge Coupled Device，电荷耦合器件)，近红外接收器121获取经穿戴者眼睛200的视网膜反射的近红外光线投射的位置，控制器40计算该位置与基准中心的距离，即得到光斑半径，乘以2即得到光斑的直径。
其中，该驱动元件22为一体积较小的马达，例如为一超声波马达。该穿戴式显示装置100可为一穿戴式智能眼镜。该凹透镜23以及凸透镜24的初始状态为旋转至位于穿戴式显示装置100的非光路位置，例如位于上框附近，而不作用于光路。当控制器40判断需要对穿戴者的眼睛的屈光度矫正，且穿戴者的眼睛为近视眼时，控制驱动元件22驱动该凹透镜23旋转至位于穿戴者眼睛的正前方，并控制驱动元件22驱动该凹透镜23相对穿戴者眼睛移动，直到确定接收模块12接收到的的光斑直径等于0.1mm为止。
当控制器40判断穿戴者的眼睛为远视眼时，控制驱动元件22驱动该凸透镜24旋转至位于穿戴者眼睛的正前方，并控制驱动元件22驱动该凹透镜24相对穿戴者眼睛移动，直到确定接收模块12接收到的光斑直径等于0.1mm为止。
其中，在该凹透镜23或凸透镜24移动的过程中，该接收模块12实时接收的近红外小孔光斑的大小也实时变化，该控制器40实时获取接收模块12接收的近红外小孔光斑，并判断当前近红外小孔光斑的直径是否等于0.1mm，如果不等于则继续控制该凹透镜23或凸透镜24靠近或远离穿戴者眼睛移动，直到当前近红外小孔光斑的直径等于0.1mm为止。
其中，该凹透镜23以及凸透镜24可安装于一与穿戴者视线平行的轴(图中未示)上并可在驱动元件22的驱动下相对该轴转动，从而位于穿戴者眼睛的正前方(即对应出瞳的位置)且可作用于所述光路的启用位置作为矫正元件，或者旋转于穿戴者眼睛的视线外而处于非启用位置以不作用于所述光路；该凹透镜23以及凸透镜24并可在驱动元件22的驱动下沿该轴移动，从而靠近或远离穿戴者的眼睛运动。
其中，该凹透镜23以及凸透镜24的双面镀可见光近红外宽带增透材料。
如图2所示，在本实施方式中，该第一半反半透元件13后还可设置柔和自然白光照射，使人眼处于放松状态，以便减少检测误差。
如图2所示，该发射模块11还包括一位于该小孔光阑112与该近红外线发射器111之间的光源准直模块113。该光源准直模块113用于将该近红外线发射器111发出的近红外光准直成平行光线，然后再通过该小孔光阑112形成近红外小孔光斑。其中，该光源准直模块113包括一凹透镜114以及一凸透镜115，该凹透镜114与该凸透镜115依次排列于该近红外线发射器111发射的近红外光的路径中且凹透镜114靠近该近红外线发射器111设置。其中，该凹透镜114与凸透镜115选择近红外透过率较高材料，且双面镀近红外增透膜。
显然，该光源准直模块113仅仅为了本发明的效果更佳，在一些实施例中可以省略。
如图2所示，该接收模块12还包括一聚焦模块122，该聚焦模块122用于在穿戴者眼睛反射的近红外小孔光斑到达该近红外接收器121之前，对该反射的近红外小孔光斑进行聚焦。
请一并参阅图4，该聚焦模块122包括一滤光片1221、两个凸透镜1222、1223以及一近红外全反射镜1224。其中，该滤光片1221、凸透镜1222、近红外全反射镜1224以及凸透镜1223依次排列于该穿戴者眼睛反射的近红外小孔光斑至该近红外接收器121的光传播路径中。
该滤光片1221为窄带滤光片，仅允许近红外发射器111发射的近红外光的波长光线通过，半带宽小于20nm，其他波段深度截止，以防止其他波段光线进入系统干扰测试结果。该凸透镜1222用于对该经过滤光片1221的近红外光进行第一次聚焦。该近红外全反射镜1224用于将该经过凸透镜1222进行了第一次聚焦的近红外光的小孔光阑反射至该凸透镜1223，然后经过该凸透镜1223进行第二次聚焦后发送给该近红外接收器121。
显然，该聚焦模块122也仅仅为了本发明的效果更佳，在一些实施例中可以省略。
如图2所示，该显示模组30包括一显示器31以及一光学模组302。该显示器31用于产生显示画面，该光学模组302用于按预设光路将该显示画面投射至出瞳的方向。该光学模组302包括第二半反半透元件32，该第二半反半透元件32位于穿戴者眼睛的正前方并与该显示器31产生的显示画面的光线呈45°，该第二半反半透元件32用于将该显示画面反射至穿戴者的眼睛，而使得穿戴者可观看显示画面。其中，该显示器31为一微型显示器，用以提供包括显示画面在内的显示源，该显示源通过特定的光学透镜组(图中未标号)形成放大的虚像并按预设路径投射到穿戴者眼睛。在本实施例中，该预设路径为通过第二半反半透元件32反射至穿戴者眼睛的路径。可以理解的是，其他实施方式中，可以灵活设置显示器31的位置以及第二半反半透元件32相对显示器31的角度，只要第二半反半透元件32将显示器31显示源的光线投射至穿戴者眼睛200的方向即可。
在本实施方式中，该第二半反半透元件32位于该屈光度调节模组20之后，即相对于该屈光度调节模组20的凹透镜23或凸透镜24，更远离穿戴者的眼睛200。
其中，该第一半反半透元件13面向穿戴者眼睛200的一面镀近红外半反半透材料，另一面镀可见光近红外宽带增透材料，入射角度为45°。
该第二半反半透元件32的面向穿戴者眼睛200的一面镀可见光全反材料，另一面均镀可见光增透材料，入射角度为45°。
其中，如图2所示，该穿戴式显示装置100还包括一保护片50，该保护片50位于最接近穿戴者眼睛200的一面，作为整个光路系统防尘作用，双面镀可见光近红外宽带增透，入射角度为0°。
从而，本发明的头戴式显示装置100可自动侦测穿戴者眼睛200的屈光度，并在穿戴者眼睛200的屈光度不正常时，选择在穿戴者眼睛200与显示模组30投射的显示画面之间增加凹透镜23或凸透镜24并进行调节，以使得穿戴者眼睛200的屈光度矫正为正常，而适合不同的人群使用。
其中，该头戴式显示装置100还包括其他元件，例如声音输出单元以及本 体框架，该声音输出单元用以输出与显示画面同步的声音信号，该本体框架用于承载上述的所有元件，由于与本发明的改进无关，故不在此赘述。
以上所述是本发明的优选实施例，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (19)

  1. 一种头戴式显示装置，包括显示模组，用于按预设光路投射显示画面至出瞳的方向，其特征在于，所述头戴式显示装置还包括：
    屈光度侦测模组，用于侦测出瞳的方向反映屈光度的参数；
    屈光度调节模组，用于调节所述光路的焦距；以及
    控制器，用于根据屈光度侦测模组的侦测参数判断是否符合屈光度标准阈值，如果否，控制屈光度调节模组进行调节，并持续获取屈光度调节模组调节过程中屈光度侦测模组侦测的参数，直到根据屈光度侦测模组侦测到的参数判断符合屈光度标准阈值。
  2. 如权利要求1所述的头戴式显示装置，其特征在于，所述屈光度侦测模组包括发射模块以及接收模块，所述发射模块用于发射近红外光至出瞳的方向，所述接收模块用于接收出瞳的方向所反射的近红外光。
  3. 如权利要求2所述的头戴式显示装置，其特征在于，所述屈光度调节模组包括驱动元件及第一凹透镜和/或第一凸透镜，所述控制器还用于根据接收模块接收的近红外光判断是否符合屈光度标准阈值，如果否，该凹透镜或凸透镜靠近或远离出瞳移动，直到根据接收模块接收出瞳的方向反射的近红外光判断符合屈光度标准阈值。
  4. 如权利要求3所述的头戴式显示装置，其特征在于，所述第一凹透镜和/或第一凸透镜安装于与出瞳的方向平行的轴上并可在驱动元件的驱动下相对该轴转动，从而位于对应出瞳且可作用于所述光路的启用位置作为矫正元件，或者旋转于非启用位置以不作用于所述光路；该第一凹透镜和/或第一凸透镜并可在驱动元件的驱动下沿该轴移动，从而靠近或远离出瞳移动。
  5. 如权利要求2所述的头戴式显示装置，其特征在于，所述屈光度侦测模组还包括第一半反半透元件，位于出瞳与接收模块之间且第一半反半透元件的反射平面与第一该发射模块产生的近红外光的方向相对且呈一定角度，第一半反半透元件用于将该发射模块发射的近红外光反射至出瞳的方向，并允许出瞳的方向反射的近红外光传递至接收模块。
  6. 如权利要求3所述的头戴式显示装置，其特征在于，所述发射模块包 括近红外线发射器以及小孔光阑，所述近红外线发射器用于产生近红外光，并通过该小孔光阑形成近红外小孔光斑后投射至出瞳的方向，所述接收模块包括近红外接收器，用于接收出瞳的方向所反射的近红外小孔光斑，所述控制器根据近红外接收器接收的近红外小孔光斑的大小来判断是否符合屈光度标准阈值。
  7. 如权利要求6所述的头戴式显示装置，其特征在于，当控制器判断所述近红外小孔光斑小于屈光度标准阈值时，控制驱动元件驱动该凹透镜旋转至所述启用位置，并控制驱动元件驱动该凹透镜相对出瞳的方向移动，直到根据持续获取的近红外小孔光斑判断符合屈光度标准阈值；当控制器判断所述近红外小孔光斑大于屈光度标准阈值时，控制驱动元件驱动该凸透镜旋转至所述启用位置，并控制驱动元件驱动该凹透镜相对出瞳的方向移动，直到根据持续获取的近红外小孔光斑判断符合屈光度标准阈值。
  8. 如权利要求7所述的头戴式显示装置，其特征在于，所述屈光度标准阈值为0.1mm。
  9. 如权利要求6所述的头戴式显示装置，其特征在于，所述发射模块还包括位于该小孔光阑与该近红外线发射器之间的光源准直模块，所述光源准直模块用于将该近红外线发射器发出的近红外光准直成平行光线，然后再通过该小孔光阑形成近红外小孔光斑。
  10. 如权利要求9所述的头戴式显示装置，其特征在于，所述光源准直模块包括第二凹透镜以及第二凸透镜，该第二凹透镜与该第二凸透镜依次排列于该近红外线发射器发射的近红外光的路径中且第二凹透镜靠近该近红外线发射器设置，，其中，该第二凹透镜与第二凸透镜为近红外透过率较高材料，且双面镀近红外增透膜。
  11. 如权利要求6所述的头戴式显示装置，其特征在于，所述接收模块还包括聚焦模块，所述聚焦模块用于在出瞳的方向反射的近红外小孔光斑到达该近红外接收器之前，对该反射的近红外小孔光斑进行聚焦。
  12. 如权利要求11所述的头戴式显示装置，其特征在于，所述聚焦模块包括滤光片、第三、第四凸透镜以及近红外全反射镜；其中，该滤光片、第三 凸透镜、近红外全反射镜以及第四凸透镜依次排列于该出瞳的方向反射的近红外小孔光斑至该近红外接收器的光传播路径中。
  13. 如权利要求12所述的头戴式显示装置，其特征在于，所述滤光片为窄带滤光片，用以对其他波段深度截止，所述第三凸透镜用于对该经过滤光片的近红外光进行聚焦，所述近红外全反射镜用于将该经过第三凸透镜进行聚焦的近红外光的小孔光阑反射至该第四凸透镜，然后经过该第四凸透镜进行聚焦后被该近红外接收器接收。
  14. 如权利要求2所述的头戴式显示装置，其特征在于，该显示模组包括显示器以及光学模组，该显示器用于产生显示画面，该光学模组用于按预设光路将该显示画面投射至出瞳的方向。
  15. 如权利要求14所述的头戴式显示装置，其特征在于，所述光学模组包括第二半反半透元件，该第二半反半透元件对应出瞳的方向并与该显示器产生的显示画面的光线呈45°，该第二半反半透元件用于将该显示画面投射至出瞳的方向。
  16. 如权利要求15所述的头戴式显示装置，其特征在于，所述第二半反半透元件位于该出瞳与该接收模块之间。
  17. 如权利要求5所述的头戴式显示装置，其特征在于，所述第一半反半透元件面向出瞳的一面镀近红外半反半透材料，另一面镀可见光近红外宽带增透材料。
  18. 如权利要求15所述的头戴式显示装置，其特征在于，所述第二半反半透元件的面向出瞳的一面镀可见光全反材料，另一面镀可见光增透材料，显示器产生的显示画面的光线相对于该第二半反半透元件的入射角度为45°。
  19. 如权利要求1所述的头戴式显示装置，还包括一保护片，所述保护片位于靠近出瞳位置，作为整个光路系统防尘作用，双面镀可见光近红外宽带增透。
PCT/CN2015/099869 2015-12-30 2015-12-30 头戴式显示装置 Ceased WO2017113189A1 (zh)

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