CN106371214B - The optical texture of reduction distortion and dispersion for virtual implementing helmet - Google Patents
The optical texture of reduction distortion and dispersion for virtual implementing helmet Download PDFInfo
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- CN106371214B CN106371214B CN201611047054.9A CN201611047054A CN106371214B CN 106371214 B CN106371214 B CN 106371214B CN 201611047054 A CN201611047054 A CN 201611047054A CN 106371214 B CN106371214 B CN 106371214B
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- mirror slip
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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
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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
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
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Abstract
The invention discloses a kind of optical textures of reduction distortion and dispersion for virtual implementing helmet.Including the left and right identical optical system being arranged symmetrically of two groups of structures, every group includes along the coaxial heart in human eye sight direction and the biconvex optical mirror slip, indent optical mirror slip and the display screen that are sequentially arranged, the optical surface type of the two sides of indent optical mirror slip is respectively plane and concave surface, display screen surface and the plane of indent optical mirror slip are affixed or only slight distance are kept to be placed in parallel, towards biconvex optical mirror slip, the light that display screen issues successively enters human eye after indent optical mirror slip and the refraction of biconvex optical lens for the concave surface of indent optical mirror slip;Two groups of left and right optical system can be adjacent to each other or be separated, and to adapt to the human eye of different interpupillary distances, and display screen can be moved forward and backward, to adapt to the human eye of different eyesights.The present invention can reduce the distortion and dispersion of optical system, reduce the pressure of image procossing, improve the quality of image and the feeling of immersion of user.
Description
Technical field
The present invention relates to the optical texture in a kind of virtual implementing helmet, more particularly to a kind of is used for virtual implementing helmet
Reduction distortion and the optical texture of dispersion.
Background technique
Virtual reality technology (Virtual Reality, VR) technology is that a kind of utilize proposed the 1980s calculates
Vision virtual environment that machine generates, can interacting, with feeling of immersion, can generate a variety of virtual environments, extensively as required
Applied to urban planning, driving training, the fields such as indoor design.Recently as computer computation ability and all types of sensors
Development, all types of virtual implementing helmets come across in the market, substantially by display screen or mobile phone and a pair of of eyepiece group
At human eye can see the image amplified on screen by eyepiece, and the variation of sensor sensing head part adjusts in the screen of left and right
Image, human eye is seen three-dimensional, the visual pattern with interactivity.
The optical texture of virtual implementing helmet is substantially human eye currently on the market, and eyeglass and screen three's normal are conllinear,
Eyeglass is typically all single lens type, and image border is often not clear enough, and with the increase at visual angle, the distortion at edge and color
Finish the meeting increasing, most dissipated using computer inverse with the method for anti-distortion compensation reduces both aberrations at present
It influences, but this will cause the promotion of computer display card performance requirement, and the improvement of edge blurry degree is not high, therefore optimal method
It is just to be eliminated as much as in eyeglass level.
Summary of the invention
In order to solve the problems, such as background technique, the present invention provides a kind of reduction for virtual implementing helmet is abnormal
Become the optical texture with dispersion, using the eyeglass for being close to screen, to reduce overall optical system distortion and dispersion, for virtually existing
The presentation of real field scape, being formed can correcting distorted and compensation dispersion visual system.
The technical solution adopted by the invention is as follows:
The optical texture includes the left and right identical optical system being arranged symmetrically of two groups of structures, every group of optical system packet
Include lens barrel and be mounted in lens barrel along the coaxial heart in human eye sight direction and the biconvex optical mirror slip, the indent optics that are sequentially arranged
Eyeglass and display screen, biconvex optical mirror slip are located in front of human eye, and indent optical mirror slip is placed in front of biconvex optical mirror slip, indent light
The both ends optical surface for learning eyeglass is a flat surface and a concave surface, the plane phase of display screen light-emitting area and indent optical mirror slip respectively
Patch, the concave surface of indent optical mirror slip towards biconvex optical mirror slip, the light that display screen issues successively pass through indent optical mirror slip with
Enter human eye after the refraction of biconvex optical lens.
Gap between the plane of the display screen surface and indent optical mirror slip is 0-5mm, so that indent optical frames
Plate plane is tightly attached to display screen surface, and the screen viewing area domain of display screen is completely covered in the plane of indent optical mirror slip.
Two groups of optical systems are arranged in parallel along perpendicular to human eye sight direction, and are fixed on respective interpupillary distance and adjust branch
On frame, two interpupillary distance adjusting brackets are connected in the screen connection guide rail of left and right and move horizontally along guide rail direction to adjust two groups of optical systems
Spacing between system, left and right screen connection guide rail is perpendicular to human eye sight direction.
The biconvex optical lens is connected on the guide rail of lens barrel inner wall by diopter adjusting slider, so that diopter tune
Section sliding block biconvex optical lens is moved along human eye sight direction, and guide rail is being led along human eye sight direction, diopter adjusting slider
Sliding is also along human eye sight direction on rail.
Thus the two groups of optical systems in left and right are close or separate to adapt to the human eye of different interpupillary distances, while display screen can front and back shifting
It is dynamic, to adapt to the human eye of different eyesights.
The biconvex optical mirror slip has positive focal power, and focal length is 30mm~60mm, and two surfaces are the aspheric of evagination
Face, outer profile be rectangle or circle, bore be 35mm~55mm, center thickness be 8mm~15mm, material be plastics or glass,
Refractive index is 1.4~1.7, and abbe number is 50~60.
The indent optical mirror slip has negative focal power, and focal length is -50mm~-70mm, and concave surface is the aspherical of indent,
Outer profile be rectangle or circle, bore be 55mm × 55mm~75 × 75mm, center thickness be 1mm~3mm, material be plastics or
Glass, refractive index are 1.6~1.8, and abbe number is 20~40.
Bore refers to eyeglass outer profile maximum gauge, if outer profile is circle, bore is circular diameter;If foreign steamer
Exterior feature is rectangle, then bore is the diagonal line length of rectangle.
Biconvex optical mirror slip in two groups of optical systems is by diopter adjusting slider simultaneously or separately along human eye
Direction of visual lines is mobile.
The beneficial effects of the present invention are:
1. optical system of the present invention realizes the correction of distortion and the compensation of dispersion using two lens, can reduce to calculating
The pressure of machine processing capacity.
2. the image quality of system edges image can be improved in optical system of the present invention, the image for seeing user is more clear
It is clear.
Detailed description of the invention
Fig. 1 is the appearance diagram of the helmet of the present invention.
Fig. 2 is top view cross section structure chart of the present invention.
Fig. 3 is any one side index path of the present invention.
Fig. 4 is the three-dimensional side view of optical texture of the present invention.
Fig. 5 is point range figure of the present invention when wavelength is 486nm incident light beam strikes at difference visual field.
Fig. 6 is point range figure of the present invention when wavelength is 587nm incident light beam strikes at difference visual field.
Fig. 7 is point range figure of the present invention when wavelength is 656nm incident light beam strikes at difference visual field.
Fig. 8 is the optical distortion figure of the embodiment of the present invention.
Fig. 9 is the distortion grid figure of the embodiment of the present invention.
Table 1 is hot spot root-mean-square value and hot spot position of the present invention when wavelength is 486nm incident light beam strikes at difference visual field
It sets
Table 2 is hot spot root-mean-square value and hot spot position of the present invention when wavelength is 587nm incident light beam strikes at difference visual field
It sets
Table 3 is hot spot root-mean-square value and hot spot position of the present invention when wavelength is 656nm incident light beam strikes at difference visual field
It sets
In figure: display screen 1, indent optical mirror slip 2, biconvex optical mirror slip 3, human eye 4, interpupillary distance adjusting bracket 5, left and right screen connect
Connect guide rail 6, diopter adjusting slider 7, lens barrel 8.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As depicted in figs. 1 and 2, optical texture of the present invention includes the left and right identical optical system being arranged symmetrically of two groups of structures
System, every group of optical system include lens barrel 8 and be mounted in lens barrel 8 along the coaxial heart in human eye sight direction and be sequentially arranged double
Convex optical mirror slip 3, indent optical mirror slip 2 and display screen 1, biconvex optical mirror slip 3 are located at 4 front of human eye, and indent optical mirror slip 2 is set
In 3 front of biconvex optical mirror slip, the both ends optical surface of indent optical mirror slip 2 is a flat surface respectively to shine with a concave surface, display screen 1
Surface and the plane of indent optical mirror slip 2 are affixed, and towards biconvex optical mirror slip 3, display screen 1 is sent out for the concave surface of indent optical mirror slip 2
Light out successively enters human eye 4 after indent optical mirror slip 2 and biconvex optical lens 3 reflect.
As shown in Fig. 2, the lens of the two groups of optical systems in left and right can be horizontally disposed along human eye direction, every group of optical system
In, interpupillary distance adjusting bracket 5 can shield in connection guide rail 6 in left and right to be moved horizontally along guide rail direction, and left and right screen connection guide rail 6 is vertical
In the direction of visual lines of human eye 4.Biconvex optical mirror slip 3 is mounted in diopter adjusting slider 7, the outside of diopter adjusting slider 7
It is connected on the guide rail of 8 inner wall of lens barrel, so that diopter adjusting slider 7 can be along shifting before and after the guide rail of the direction of visual lines of human eye 4
It is dynamic.
Display screen 1 and the plane side of indent optical mirror slip 2 in two groups of optical systems are substantially parallel, can be bonded completely or
Only small airspace, between gap only allow to be illustrated in figure 2 the structure being bonded completely, and indent optics for 0-5mm
The visible area of display screen 1 can be completely covered in eyeglass 2.
As shown in figure 3, the side view of the light channel structure for side of the present invention, after light is issued from display 1, directly
It is pierced by into the plane side of indent optical mirror slip 2, then after the refraction of the aspherical side of indent optical mirror slip 2, by two
Enter indent optical mirror slip 2 after air layer between eyeglass, using eyeglass is pierced by after reflecting twice, into human eye 4, user
It can be seen that the image amplified on display screen 1.
The side of the close display screen 1 of indent optical mirror slip 2 is plane, is close to the luminous side of display screen 1, can also there is 0
The airspace of~5mm, but screen and indent optical mirror slip 2 must keeping parallelisms;The outer profile of indent optical mirror slip 2 can be
Circular rectangle living, but require that the visible area on display screen 1 can be covered, having a size of 50mm × 50mm to 80mm ×
80mm;The center thickness of indent optical mirror slip 2 is 1mm~5mm;Focal length is -40mm~-80mm;Material therefor is high refractive index,
The optical plastic or optical glass of high dispersion, surface can be coated with anti-reflection film, cured film, the functionality film layer such as waterproof membrane, structure
It can be single eyeglass or balsaming lens, be also possible to more lens sets, surface face type can be spherical surface, aspherical or Fei Nier
Face is also possible to the combination of several face types.
The two sides of biconvex optical mirror slip 3 is convex surface, and profile is circle, is also possible to rectangle, having a size of diameter 30mm~
60mm;Center thickness is 3mm~15mm;Focal length is 30mm~60mm;The optical plastic or light of low dispersion can be used in material therefor
Learn glass.Two surfaces can be coated with anti-reflection film, cured film, and the functionality film layer such as waterproof membrane, structure can be single eyeglass or glue
Lens are closed, more lens sets are also possible to, surface face type can be spherical surface, aspherical or Fei Nier combination, be also possible to several
The combination of face type.
Indent optical mirror slip 2 and 3 arranged in co-axial alignment of biconvex optical mirror slip, distance away, indent optical mirror slip 2 can edge
Optical axis be moved forward and backward, the distance of adjustment is between 0mm~20mm, adjusting the diopter of optical system, makes myopia or remote
Depending on user it can be seen that clearly image on display screen;The two combined focal length is 30mm~60mm, and human eye is close to biconvex
The side of optical mirror slip 3 can see the image amplified on display screen 1, and visible angle is 80 °~120 °.Two groups of left and right is identical
Optical system can be close to or far from adjustable range is that 0mm~15mm makes not to adjust the interpupillary distance difference between different people
The people of same interpupillary distance can comfortably use this virtual implementing helmet.
Display screen 1 uses high-resolution LCD or OLED flat-faced screen, preferably using high resolution in the low of FHD
Response time OLED flat-faced screen.
The embodiment of the present invention and its specific implementation course of work are as follows:
As shown in figure 4, it is aspherical that indent optical mirror slip 2, which uses while for plane, it is the company with negative power
Continuous curved surface, material are optical plastic PC, and surface is coated with anti-reflection film, and plane side Yu display screen 1 is close to, and just cover affiliated side
Display screen 1, profile is rectangle.The two sides of biconvex optical mirror slip 3 is aspherical, is the continuous curve surface with positive light coke,
Material is optical plastic PMMA, and two sides are coated with anti-reflection film, and profile is circle.
The optical system that indent optical mirror slip 2 and biconvex optical mirror slip 3 form has a positive focal power, focal length be 25mm~
60mm, relative aperture, that is, aperture are f/2~f/5.6, and simple eye diagonal angles of visual field is 80 °~120 °, can cover 2.5 cun~4 cun
Display screen 1.
Aspherical calculation formula is as follows:
Wherein, z is rise, and r is distance of the aspheric vertex of surface to aspherical upper any point, and c is curvature, and k is conical surface system
Number, A1~A5…ANRespectively first, second, third, fourth, the 5th ..., N asphericity coefficient, N is positive integer, A1To AN?
Number is any, and value is any.
In specific embodiment, two eyeglasses are whole single lens structure, in which:
Indent optical mirror slip 2 is having a size of 72mm × 72mm, center thickness 2mm, and focal length is -58.8mm, material PC,
Asphericity coefficient are as follows: c=-0.028825, k=-3.402, A4=1.756569E-006, A6=5.80938E-010, A8=
2.74757E-013 remaining coefficient is 0.
3 bore of biconvex optical mirror slip is 40mm, center thickness 10.8mm, focal length 27.2mm, material PMMA.It is close
The asphericity coefficient of human eye are as follows: c=-0.03362, k=0, A4=1.1013E-005, A6=-- 2.6276E-08, A8=
1.83492E-011 remaining is 0.Face asphericity coefficient far from human eye are as follows: c=-0.0462, k=-7.439, A4=-
6.4105E-005 A6=1.6641E-08, A8=-1.9376E-010, remaining is 0.
Centre distance of the center of lens apart from human eye 4 is 10mm, twenty-twenty vision people in use, center between two eyeglasses away from
For 40mm, the 1080pOLED display screen for the 3:2 that the size that display screen is 1 is 2.9 inches.The focal length of entire optical system
For 21.43mm, relative aperture f/4.3.
It is 5mm, two sets of optical systems that two sets of left and right optical system, which can go out to move left and right distance in the position normal interpupillary distance 63mm,
It unites distinguishable back-and-forth motion screen, in the case of range is normal distance, close to mobile 10mm, the myopia within 400 degree can be made
Person is apparent that the content on screen.
It is wavelength is 486nm that Fig. 5~Fig. 7, which is respectively incident light, 587nm, with different 0 ° of field angle when 656nm incidence,
Point range figure at 10 °, 20 °, 30 °, 40 ° and 50 ° of visual field, maximum spot diameter are no more than 0.1mm, and in visible light wave range model
It can be very good to eliminate color difference in enclosing.
If Fig. 5~Fig. 7 is respectively 3 hot spots for representing wavelength and seeing on the screen of a length of visible light wave range of incident light wave
Shape, three wavelength are respectively 486nm, 587nm and 656nm.Every figure from left to right, from top to bottom be respectively 0 °, 10 °,
20 °, 30 °, 40 ° and 50 ° this 6 directional lights for representing visual angle incidence are incident on the light spot shape formed on screen, 1~table of table 3
The root-mean-square value of the spot diameter at respectively 36 visual angles of wavelength and spot center position (spot center to picture centre away from
From), size is smaller, indicates that imaging definition is higher.The spot center position difference of different wave length same view angle is smaller, then table
Show that color difference is smaller.
It can be seen from the chart, the maximum spot diameter maximum value of all visual fields and wave band is both less than 0.1mm, illustrates can
Light-exposed any picture position of wave band can see clearly image, and the spot center position difference of different wave length same view angle all exists
0.1mm or so illustrates image color difference very little.
Table 1
Table 2
Visual angle (°) | 0 | 10 | 20 | 30 | 40 | 50 |
Spot diameter (mm) | 17.964 | 35.058 | 53.65 | 68.01 | 97.514 | 75.378 |
Spot center position (mm) | 0 | 8.156 | 17.469 | 27.045 | 36.165 | 44.31 |
Table 3
Visual angle (°) | 0 | 10 | 20 | 30 | 40 | 50 |
Spot diameter (mm) | 2.248 | 42.19 | 71.264 | 78.776 | 63.792 | 74.828 |
Spot center position (mm) | 0 | 8.169 | 17.492 | 27.078 | 36.214 | 44.41 |
The optical distortion of the present embodiment optical system distorts smaller as shown in figure 8, if the degree of curved is smaller,
It can be seen from the chart, the maximum distortion amount of optical distortion entirety controls within 10%, and can be basic at maximum field of view
Eliminate distortion.
The distortion grid of the present embodiment optical system is as shown in figure 9, grid is distortionless ideal image, the intersection of X-type
Point be grid intersection in the physical location after optical system, it is seen that be it is slightly outstanding, need certain compensation.Due to
Amount of distortion is little, therefore the dislocation of each pixel is smaller, needs difference to be restored to undistorted required calculation amount also smaller, with one
As common eyeglass compare, 20%~40% calculation amount can be reduced using same algorithm.In addition, in the prior art due to soft
It is to be based on interpolation, therefore excessive compensation will lead to the fuzzy of image, and optical system needs of the invention is soft that part, which compensated,
Part compensation rate is smaller, therefore image clearly degree keeps also preferable.
By Fig. 8 and Fig. 9 as it can be seen that whole distortion can control within 10%, and can eliminate substantially at full filed abnormal
Become, it is little to can be seen that the anamorphose in entire imaging region from mesh distortion figure, therefore the damage of picture quality can be reduced
It loses.
It can illustrate that the present invention under used technical solution there is it to protrude significant technical effect by above-described embodiment.
Claims (7)
1. a kind of optical texture of reduction distortion and dispersion for virtual implementing helmet, it is characterised in that: the optical texture
Including the left and right identical optical system being arranged symmetrically of two groups of structures, every group of optical system includes lens barrel (8) and is mounted on
In lens barrel (8) along the coaxial heart in human eye sight direction and be sequentially arranged biconvex optical mirror slip (3), indent optical mirror slip (2) and
Display screen (1), biconvex optical mirror slip (3) is located in front of human eye (4), before indent optical mirror slip (2) is placed in biconvex optical mirror slip (3)
Side, the optical surface at indent optical mirror slip (2) both ends are a flat surface and a concave surface, display screen (1) surface and indent optics respectively
The plane of eyeglass (2) is affixed, the light that the concave surface of indent optical mirror slip (2) is issued towards biconvex optical mirror slip (3), display screen (1)
Line successively enters human eye (4) after indent optical mirror slip (2) and biconvex optical mirror slip (3) refraction;
The biconvex optical mirror slip (3) has positive focal power, and focal length is 30mm~60mm, and two surfaces are aspherical, foreign steamer
Exterior feature is rectangle or circle, and bore is 35mm~55mm, and center thickness is 8mm~15mm, and material is plastics or glass, and refractive index is
1.4~1.7, abbe number is 50~60.
2. a kind of optical texture of reduction distortion and dispersion for virtual implementing helmet according to claim 1, special
Sign is: the gap between the plane on display screen (1) surface and indent optical mirror slip (2) is 0-5mm, so that indent light
It learns eyeglass (2) plane and is tightly attached to display screen (1) surface, and display screen (1) is completely covered in the plane of indent optical mirror slip (2)
Screen viewing area domain.
3. a kind of optical texture of reduction distortion and dispersion for virtual implementing helmet according to claim 1, special
Sign is: two groups of optical systems are arranged in parallel along perpendicular to human eye sight direction, and are fixed on respective interpupillary distance and adjust branch
On frame (5), two interpupillary distance adjusting brackets (5), which are connected in left and right screen connection guide rail (6), to be moved horizontally along guide rail direction to adjust
Spacing between two groups of optical systems.
4. a kind of optical texture of reduction distortion and dispersion for virtual implementing helmet according to claim 1, special
Sign is: the biconvex optical mirror slip (3) is connected on the guide rail of lens barrel (8) inner wall by diopter adjusting slider (7), so that
Diopter adjusting slider (7) biconvex optical mirror slip (3) is moved along human eye sight direction.
5. a kind of optical texture of reduction distortion and dispersion for virtual implementing helmet according to claim 1, special
Sign is: the indent optical mirror slip (2) has negative focal power, and focal length is -50mm~-70mm, and concave surface is aspherical, foreign steamer
Exterior feature is rectangle or circle, and bore is 55mm × 55mm~75 × 75mm, and center thickness is 1mm~3mm, and material is plastics or glass
Glass, refractive index are 1.6~1.8, and abbe number is 20~40.
6. a kind of optical texture of reduction distortion and dispersion for virtual implementing helmet according to claim 1, special
Sign is: biconvex optical mirror slip (3) in two groups of optical systems by diopter adjusting slider (7) simultaneously or separately along
Human eye sight direction is mobile.
7. a kind of optical texture of reduction distortion and dispersion for virtual implementing helmet according to claim 1 or 5,
Be characterized in that: described is aspherical using following formula:
Wherein, z is rise, and r is distance of the aspheric vertex of surface to aspherical upper any point, and c is curvature, and k is conical surface coefficient, A1
~A5 ... AN is respectively first, second, third, fourth, the 5th ..., N asphericity coefficient.
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EP3580604A4 (en) * | 2017-02-12 | 2021-03-10 | Lemnis Technologies Pte. Ltd. | Methods, devices and systems for focus adjustment of displays |
CN106803950A (en) * | 2017-03-02 | 2017-06-06 | 深圳晨芯时代科技有限公司 | A kind of VR all-in-ones and its image adjusting method |
CN111679436B (en) * | 2020-07-10 | 2022-03-15 | 贵州云墨科技有限公司 | VR glasses lens angular adjustment structure |
WO2023213406A1 (en) * | 2022-05-05 | 2023-11-09 | Haag-Streit Gmbh | Stereoscopic, indirect viewing device for a microscope |
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CN104049369B (en) * | 2014-06-28 | 2016-09-07 | 青岛歌尔声学科技有限公司 | A kind of camera lens for wearing display device and helmet |
CN204575971U (en) * | 2015-04-23 | 2015-08-19 | 北京小鸟看看科技有限公司 | A kind of head-mounted display |
CN104793452B (en) * | 2015-04-29 | 2016-08-17 | 北京小鸟看看科技有限公司 | A kind of micro-projection device |
CN204575972U (en) * | 2015-04-30 | 2015-08-19 | 杭州映墨科技有限公司 | A kind of optical lens structure presenting the wearable virtual implementing helmet of three-dimensional scenic |
CN105259658A (en) * | 2015-10-30 | 2016-01-20 | 深圳市火乐科技发展有限公司 | Device and method for improving imaging quality of virtual display ocular optical system |
CN206411339U (en) * | 2016-11-23 | 2017-08-15 | 杭州映墨科技有限公司 | A kind of optical texture of reduction distortion and dispersion for virtual implementing helmet |
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