CN208314330U - A kind of nearly eye display optical system of simple eye big visual field and head-mounted display apparatus - Google Patents
A kind of nearly eye display optical system of simple eye big visual field and head-mounted display apparatus Download PDFInfo
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- CN208314330U CN208314330U CN201820261197.8U CN201820261197U CN208314330U CN 208314330 U CN208314330 U CN 208314330U CN 201820261197 U CN201820261197 U CN 201820261197U CN 208314330 U CN208314330 U CN 208314330U
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Abstract
The utility model discloses a kind of nearly eye display optical system of simple eye big visual field and head-mounted display apparatus, the optical system includes that the first monochromatic planar optics waveguide, the second monochromatic planar optics waveguide and the third monochrome planar optics waveguide of setting are stacked gradually along optical path, first monochromatic input coupling grating, the second monochromatic input coupling grating and third monochrome input coupling grating, first monochromatic output coupling grating, the second monochromatic output coupling grating and third monochrome output coupling grating and the first relaying grating, the second relaying grating and third relay grating；Input coupling grating is used for, optically coupling in monochromatic planar optics waveguide, monochromatic light is transmitted to output coupling grating by relaying grating with the image monochrome of incident planar optics waveguide；Output coupling grating is by monochromatic light decoupling.Difference by the light beam of input according to light color is respectively processed, and reduces light energy losses, and image quality is more preferable, achievees the effect that big visual field is realized in splicing by the way that multiple transmission channels are arranged.
Description
Technical field
The utility model relates to augmented reality field of display technology, more particularly to a kind of nearly eye of simple eye big visual field shows optics
System and head-mounted display apparatus.
Background technique
Augmented reality (AR) shows that equipment allows users to watch week through the transparent or semitransparent display of equipment
The environment enclosed, and the image for also seeing that display generates is covered on ambient enviroment.This kind of equipment is usually that wear-type is aobvious
Show device (HMD) glasses or other wearable display equipment.Equipment usually transmits image, the light of display using optical waveguide
Need to be coupled into optical waveguide by input coupling portion, while needing to be arranged intermediate member carrys out extended pupil again in optical waveguide,
The structure of existing input coupling portion and intermediate member makes the diagonal angles of visual field of the image of input no more than 35 degree, especially
The restriction of intermediate member structure, thus existing augmented reality shows the diagonal angles of visual field of equipment usually only 14-34 degree, and
Same optical waveguide is generallyd use at present to conduct the light beam comprising multiple color, causes image quality poor.Also have existing
Technology is propagated by the way that the image for showing equipment input is split into two-way in optical waveguide by an input coupling portion,
And injection is assembled by output coupling portion, to achieve the effect that increasing augmented reality shows equipment diagonal angles of visual field.But
This technology is limited by the structure in input coupling portion, is only capable of extending to field angle still reaching people couple close to 70 degree
Augmented reality shows the expectation of the big visual field of equipment, is not able to satisfy the demand of consumption market.And the image in input coupling portion is split
Convergence with output coupling portion is brought again assembles the non-uniform technical problem of brightness of image.
Utility model content
The utility model embodiment provides a kind of nearly eye display optical system of simple eye big visual field and head-mounted display apparatus, uses
To improve image quality, and realize that the nearly eye of big visual field is shown by the way of splicing.
In order to realize that above-mentioned purpose of utility model, the utility model embodiment first aspect provide a kind of simple eye big visual field
Nearly eye display optical system, comprising:
The first monochromatic planar optics waveguide, the second monochromatic planar optics waveguide and the third list of setting are stacked gradually along optical path
Color planar optics waveguide,
The first monochromatic input coupling grating, the second monochromatic input coupling grating and the third monochrome set gradually along optical path is defeated
Enter coupling grating,
The first monochromatic output coupling grating, the second monochromatic output coupling grating and the third monochrome set gradually along optical path is defeated
Coupling grating out,
And it is set to the first relaying grating in the first monochromatic planar optics waveguide, is set to the second monochromatic planar optics wave
The the second relaying grating led and the third relaying grating being set in third monochrome planar optics waveguide；
First monochromatic input coupling grating is set in the first monochromatic planar optics waveguide, and being used for will be with incident planar optics
Corresponding first monochrome of the image of waveguide is optically coupling in the first monochromatic planar optics waveguide；Second monochromatic input coupling grating
It is set in the second monochromatic planar optics waveguide, for by the second monochromatic light corresponding with the image of incident planar optics waveguide
It is coupled in the second monochromatic planar optics waveguide；Third monochrome input coupling grating is set to third monochrome planar optics waveguide
On, for by third monochrome corresponding with the image of incident planar optics waveguide optically coupling to third monochrome planar optics waveguide
In,
First monochromatic input coupling grating is coupled into the first monochromatic planar optics waveguide and first by the first relaying grating
First monochromatic light of monochromatic planar optics waveguide total internal reflection transmission carries out diffraction, makes it in the first monochromatic planar optics waveguide
Total reflection is transmitted to the first monochromatic output coupling grating；Second monochromatic input coupling grating is coupled into second by the second relaying grating
Monochromatic planar optics waveguide simultaneously carries out diffraction in the second monochromatic light of the second monochromatic planar optics waveguide total internal reflection transmission, makes
It is transmitted to the second monochromatic output coupling grating in the second monochromatic planar optics waveguide total internal reflection；Third relays grating for third
Monochromatic input coupling grating is coupled into third monochrome planar optics waveguide and passes in third monochrome planar optics waveguide total internal reflection
Defeated third monochromatic light carries out diffraction, it is made to be transmitted to third monochrome output coupling in third monochrome planar optics waveguide total internal reflection
Light combination grid；
First monochromatic output coupling grating is set in the first monochromatic planar optics waveguide, and being used for will be with incident planar optics
The monochromatic planar optics waveguide of the corresponding first monochromatic light decoupling first of the image of waveguide；Second monochromatic output coupling grating setting
In in the second monochromatic planar optics waveguide, for by the second monochromatic light decoupling corresponding with the image of incident planar optics waveguide
Second monochromatic planar optics waveguide；Third monochrome output coupling grating is set in third monochrome planar optics waveguide, and being used for will
Third monochromatic light decoupling third monochrome planar optics waveguide corresponding with the image of incident planar optics waveguide,
First monochromatic output coupling grating, the second monochromatic output coupling grating and third monochrome output coupling grating project light
The direction of beam is towards side locating for eyes of user.Such as the first monochromatic output coupling grating, the second monochromatic output coupling grating
With third monochrome output coupling grating to the first monochromatic planar optics waveguide side outgoing beam or the first monochromatic output coupling
Grating, the second monochromatic output coupling grating and third monochrome output coupling grating are penetrated to third monochrome planar optics waveguide side
Light beam out.
Difference of the utility model by the light beam of input according to light color is respectively processed, by monochromatic waveguide to monochrome into
Row transmission, reduces light energy losses, image quality is more preferable.
When the light beam of incident planar optics waveguide is along from the first monochromatic planar optics waveguide side incidence, incident beam according to
It is secondary to pass through the first monochromatic input coupling grating, the second monochromatic input coupling grating and third monochrome input coupling grating diffration；
When the light beam of incident planar optics waveguide is along from third monochrome planar optics waveguide side incidence, incident beam successively passes through the
Three monochromatic input coupling gratings, the second monochromatic input coupling grating and the first monochromatic input coupling grating diffration.
The monochromatic planar optics waveguide of described first, the second monochromatic planar optics waveguide and third monochrome planar optics waveguide
Constitute planar optics waveguide, the first monochromatic input coupling grating set gradually along same optical path, the second monochromatic input
Coupling grating and third monochrome input coupling one input coupling grating of optical grating constitution, it is corresponding with the same input coupling grating
First relaying grating, first relaying grating and third relay one relaying grating of optical grating constitution, with the same input coupling light
Grid are corresponding and the first monochromatic output coupling grating, the second monochromatic output coupling grating and the third that set gradually along same optical path
Monochromatic output coupling optical grating constitution exports a coupling grating, the planar optics waveguide have multiple input coupling gratings with
And the relaying grating and output coupling grating being arranged in a one-to-one correspondence with each input coupling grating, each input coupling grating are used to
It will be corresponding and there is corresponding sub- field angle and enter planar optics wave with whole light beam couplings of the associated image of entrance pupil
It leads, is all-trans by the inside that each light beam of diffraction makes the light beam meet the planar optics waveguide in planar optics waveguide
Condition is penetrated, and each light beam is guided to corresponding relaying grating, relaying grating is drawn each light beam by each light beam of diffraction
Lead corresponding output coupling grating, output coupling grating by each light beam to external diffraction so that each light beam is unsatisfactory for plate
The inner full-reflection condition of optical waveguide, the output coupling grating leave planar optics waveguide simultaneously to whole light beams of external diffraction
Form image, it is opposite that the image and corresponding input coupling grating are coupled into the associated image of whole light beams of planar optics waveguide
And should be there is corresponding sub- field angle；Each output coupling grating can be from same to the image with corresponding sub- field angle of external diffraction
Watched at one emergent pupil and mutually splicing, constitute a complete image with corresponding big visual angle, the complete image it is big
Field angle is to merge to obtain from each output coupling grating to the corresponding sub- field angle of the image of external diffraction.
To which the utility model is the light beam point of image that is related to entrance pupil by multiple and having corresponding sub- field angle
It is not coupled into planar optics waveguide from the different input coupling gratings of planar optics waveguide, the light beam of different images is by respectively opposite
It is directed to emergent pupil together after the relaying grating and output coupling grating answered, so as to observe simultaneously in emergent pupil
The multiple images for projecting planar optics waveguide, the image that each image is respectively used in certain sub- visual field scope show,
By image mosaic, increase the simple eye field angle of equipment.Due to each related to entrance pupil and with corresponding sub- field angle
The light beam of image passes through an independent input coupling grating respectively and is coupled into planar optics waveguide, and uses and input coupling light
The relaying grating and output coupling grating that grid are arranged in a one-to-one correspondence independently guide the light beam of each image, thus input
The quantity of image related to entrance pupil and with corresponding sub- field angle is unrestricted, each output coupling of the utility model
Grating can export maximum 35 ° or so of diagonal angles of visual field, thus the utility model can integrally obtain in target zone
All field angles, be far longer than existing equipment attainable 70 ° of the limit.An output is also not present in the utility model simultaneously
Coupling grating needs to assemble the problem of two incident light electron guns, and the brightness of image uniformity of output does not need additional adjusting
Component is modulated the image of input.
The number of image that is related to entrance pupil and having corresponding sub- field angle can be two, three, four or appoint
Anticipate multiple, only need to be arranged in planar optics waveguide respective numbers input coupling grating and corresponding relaying grating with
Output coupling grating.Each image related to entrance pupil and having corresponding sub- field angle is a general image
Topography, last multiple topographies are spliced to form complete general image, to increase the simple eye field angle of equipment, arbitrarily
Two images that are related to entrance pupil and having corresponding sub- field angle can horizontal splicing or vertical splicing.According to making for equipment
With needs, multiple output coupling gratings can be arranged in the form arbitrarily needed, such as: can in the horizontal direction according to
Secondary arrangement can also be vertically arranged successively, and can also be gone out with arranged in arrays etc. to realize each output coupling grating
The horizontal splicing for the image penetrated, vertically splicing, matrix splicing etc..
Each light beam carry out level that the relaying grating is configured as being directed onto relaying grating expands and vertically expands
One of beam expands, and each light beam that the output coupling grating is configured as being directed onto output coupling grating carries out water
The another kind put down in expanding and vertically expanding expands.
The output coupling grating of planar optics waveguide is configured in the simple eye front of user, simple eye to user visible to be formed
Image.Planar optics waveguide is substantially transparent, so that user can not only watch entrance pupil correlation and have corresponding
The image of sub- field angle can also watch the image from real world through planar optics waveguide.So that this is practical new
Type can be used for augmented reality and show equipment, and by the image superposition being spliced to form in real world, it is aobvious to reach raising enhancing
Show the technical effect of equipment field angle.
The nearly eye display optical system of above-mentioned simple eye big visual field can be incorporated into mixed reality and show equipment or augmented reality
It shows in equipment, but not limited to this.The single embodiment of the nearly eye display optical system of above-mentioned simple eye big visual field can be supplied to use
Each of the left eye and right eye at family.Thus on the other hand the utility model provides a kind of head-mounted display apparatus, including upper
The nearly eye display optical system of the simple eye big visual field of any one stated and the component of wearing for being worn on user's head, simple eye big view
Nearly eye display optical system be mounted on it is described wear on component and be oriented its output coupling grating direct the light beam into pendant
On the eyes of wearer.
The head-mounted display apparatus has a nearly eye display optical system of a simple eye big visual field, the nearly eye of simple eye big visual field
Display optical system is oriented its output coupling grating and directs the light beam on the left eye or right eye of wearer.
For the described head-mounted display apparatus tool there are two the nearly eye display optical system of simple eye big visual field, one of them is simple eye big
The nearly eye display optical system of visual field is oriented its output coupling grating and directs the light beam on the left eye of wearer, another
The nearly eye display optical system of simple eye big visual field is oriented its output coupling grating and directs the light beam on the right eye of wearer.
The component of wearing includes that frame, the helmet or headband etc. can be worn on the component in account.
One or more technical solution in the utility model embodiment, at least has the following technical effect that or excellent
Point:
Difference of the utility model by the light beam of input according to light color is respectively processed, by monochromatic waveguide to monochrome into
Row transmission, reduces light energy losses, image quality is more preferable.
By the light beam of image multiple related to entrance pupil and that there is corresponding sub- field angle respectively from planar optics waveguide
Different input coupling gratings be coupled into planar optics waveguide, the light beams of different images is by respective corresponding relaying grating and defeated
It is directed to emergent pupil together after coupling grating out, so as to observe the injection planar optics simultaneously in emergent pupil
The multiple images of waveguide, the image that each image is respectively used in certain sub- visual field scope are shown, by image mosaic, are increased
The simple eye field angle of equipment.
Detailed description of the invention
Fig. 1 is a kind of plan structure signal of embodiment of the nearly eye display optical system of simple eye big visual field of the utility model
Figure；
Fig. 2 is the left view structural representation of embodiment illustrated in fig. 1；
Fig. 3 is the planar optics waveguiding structure schematic diagram of embodiment illustrated in fig. 1；
Fig. 4 is the planar optics wave of another embodiment of the nearly eye display optical system of simple eye big visual field of the utility model
Guide structure schematic diagram；
Fig. 5 is the planar optics wave of the third embodiment of the nearly eye display optical system of simple eye big visual field of the utility model
Guide structure schematic diagram；
Fig. 6 is the planar optics wave of the 4th kind of embodiment of the nearly eye display optical system of simple eye big visual field of the utility model
Guide structure schematic diagram.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1 and Figure 2, the utility model embodiment first aspect provides a kind of nearly eye of simple eye big visual field and shows optics
System includes:
Along optical path stack gradually setting the first monochromatic planar optics waveguide 13a, the second monochrome planar optics waveguide 13b and
Third monochrome planar optics waveguide 13c,
The first monochromatic input coupling grating 1312 of monochromatic input coupling grating 1311, second for being set gradually along optical path and the
Three monochromatic input coupling gratings 1323,
The first monochromatic output coupling grating 1332 of monochromatic output coupling grating 1331, second for being set gradually along optical path and the
Three monochromatic output coupling gratings 1333,
And it is set to the upper first relaying grating 1311 of the first monochromatic planar optics waveguide 13a, second is set to and monochromatic puts down
The second relaying grating 1312 on plate optical waveguide 13b is relayed with the third being set on third monochrome planar optics waveguide 13c
Grating 1323；
First monochromatic input coupling grating 1311 is set on the first monochromatic planar optics waveguide 13a, and being used for will be with incidence
Corresponding first monochrome of the image of planar optics waveguide 13 is optically coupling in the first monochromatic planar optics waveguide 13a；Second is single
Color input coupling grating 1312 is set on the second monochromatic planar optics waveguide 13b, and being used for will be with incident planar optics waveguide 13
Image it is corresponding second monochromatic optically coupling in the second monochromatic planar optics waveguide 13b；Third monochrome input coupling grating
1323 are set on third monochrome planar optics waveguide 13c, for will be corresponding with the image of incident planar optics waveguide 13
Third monochrome optically coupling in third monochrome planar optics waveguide 13c,
First monochromatic input coupling grating 1311 is coupled into the first monochromatic planar optics waveguide by the first relaying grating 1311
13a simultaneously carries out diffraction in the first monochromatic light of the first monochromatic planar optics waveguide 13a inner total reflection transmission, keeps it single first
Color planar optics waveguide 13a inner total reflection is transmitted to the first monochromatic output coupling grating 1331；Second relaying grating 1312 is by the
Two monochromatic input coupling gratings 1312 are coupled into the second monochrome planar optics waveguide 13b and in the second monochromatic planar optics waveguides
Second monochromatic light of 13b inner total reflection transmission carries out diffraction, makes it in the second monochromatic planar optics waveguide 13b inner total reflection transmission
To the second monochromatic output coupling grating 1332；Third relays grating 1323 and third monochrome input coupling grating 1323 is coupled into the
Three monochrome planar optics waveguide 13c are simultaneously carried out in the third monochromatic light of third monochrome planar optics waveguide 13c inner total reflection transmission
Diffraction makes it be transmitted to third monochrome output coupling grating 1333 in third monochrome planar optics waveguide 13c inner total reflection；
First monochromatic output coupling grating 1331 is set on the first monochromatic planar optics waveguide 13a, and being used for will be with incidence
The monochromatic planar optics waveguide 13a of the corresponding first monochromatic light decoupling first of the image of planar optics waveguide 13；Second is monochromatic defeated
Coupling grating 1332 is set on the second monochromatic planar optics waveguide 13b out, for by the figure with incident planar optics waveguide 13
As the monochromatic planar optics waveguide 13b of corresponding second monochromatic light decoupling second；Third monochrome output coupling grating 1333 is arranged
In on third monochrome planar optics waveguide 13c, for third corresponding with the image of incident planar optics waveguide 13 is monochromatic
Optocoupler goes out third monochrome planar optics waveguide 13c,
The first monochromatic output coupling grating 1332 of monochromatic output coupling grating 1331, second and third monochrome output coupling light
The direction of 1333 outgoing beam of grid is towards side locating for eyes of user.Such as the first monochromatic output coupling grating 1331, second
Monochromatic output coupling grating 1332 and third monochrome output coupling grating 1333 are to the first monochrome side planar optics waveguide 13a
Outgoing beam or the first monochromatic output coupling grating 1332 of monochromatic output coupling grating 1331, second and third monochrome output coupling
Grating 1333 is to the side third monochrome planar optics waveguide 13c outgoing beam.
Difference of the utility model by the light beam of input according to light color is respectively processed, by monochromatic waveguide to monochrome into
Row transmission, reduces light energy losses, image quality is more preferable.
First among the above is monochromatic, second is monochromatic and third monochrome is respectively one of red, green, blue and different.
By taking first monochromatic, the second monochrome and third monochrome are respectively R (red), G (green) and B (blue) as an example, light beam
Red planar optics waveguide 13a is first injected, via the R light beam in red 1311 diffraction of the input coupling grating light beam, so that R light
Beam meets the inner full-reflection condition of red planar optics waveguide 13a；G light beam and B light beam are from red input coupling grating 1311
Green planar optics waveguide 13b is projected and injected, via the G light beam in green 1312 diffraction of the input coupling grating light beam, is made
Obtain the inner full-reflection condition that G light beam meets green planar optics waveguide 13b；B light beam is penetrated from green input coupling grating 1312
Out and blue color plane optical waveguide 13c is injected, reflects after the B light beam in the light beam and incite somebody to action via blue input coupling grating 1312
B light beam injects green planar optics waveguide 13b, so that B light beam meets the inner full-reflection item of blue color plane optical waveguide 13c
Part.
Blue 1333 diffraction of output coupling grating is by blue 1312 diffraction of input coupling grating and in blue color plane optics wave
Lead the B light beam of 13c inner total reflection so that the B light beam be unsatisfactory for the inner full-reflection condition of blue color plane optical waveguide 13c and
It is projected from blue color plane optical waveguide 13c, and successively through green planar optics waveguide 13b and green output coupling grating 1332
With red planar optics waveguide 13a and red output coupling grating 1331 and project；Green 1332 diffraction of output coupling grating by
Green 1312 diffraction of input coupling grating and in the G light beam of green planar optics waveguide 13b inner total reflection, so that the G light beam
It is unsatisfactory for the inner full-reflection condition of green planar optics waveguide 13b and is projected from green planar optics waveguide 13b, and successively thoroughly
It crosses red planar optics waveguide 13a and red output coupling grating 1331 and projects；Red 1331 diffraction of output coupling grating by
Red 1311 diffraction of input coupling grating and in the R light beam of red planar optics waveguide 13a inner total reflection, so that the R light beam
It is unsatisfactory for the inner full-reflection condition of red planar optics waveguide 13a and is projected from red planar optics waveguide 13a.
It is incident when the light beam of incident planar optics waveguide 13 is along from the first monochromatic planar optics waveguide 13a side incidence
Light beam successively passes through the first monochromatic input coupling grating 1312 of monochromatic input coupling grating 1311, second and third monochrome input coupling
The diffraction of light combination grid 1323；When the light beam edge of incident planar optics waveguide 13 enters from the side third monochrome planar optics waveguide 13c
When penetrating, incident beam successively passes through the monochromatic input coupling grating 1312 and first of third monochrome input coupling grating 1323, second
The diffraction of monochromatic input coupling grating 1311.
The monochromatic planar optics waveguide 13a of described first, the second monochrome planar optics waveguide 13b and third monochrome plate light
It learns waveguide 13c and constitutes planar optics waveguide 13, the first monochromatic input coupling grating set gradually along same optical path
1311, the second monochromatic input coupling grating 1312 and third monochrome input coupling grating 1323 constitute an input coupling grating
131, first relaying grating 1311, first corresponding with the same input coupling grating 131 relays in grating 1312 and third
A relaying grating 132 is constituted after grating 1323, it is corresponding with the same input coupling grating 131 and successively set along same optical path
First set the monochromatic output coupling grating 1332 of monochromatic output coupling grating 1331, second and third monochrome output coupling grating
1333 constitute output one coupling grating 133, the planar optics waveguide 13 have multiple input coupling gratings 131 and with
The relaying grating 132 and output coupling grating 133 that each input coupling grating 131 is arranged in a one-to-one correspondence, each input coupling grating
131 be used to will be corresponding and have corresponding sub- field angle and enter with whole light beam couplings of the associated image of entrance pupil flat
Plate optical waveguide 13 makes the light beam meet the planar optics wave in planar optics waveguide 13 by each light beam of diffraction
The inner full-reflection condition led, and each light beam is guided to corresponding relaying grating 132, relaying grating 132 is every by diffraction
Each light beam is directed to corresponding output coupling grating 133 by one light beam, and output coupling grating 133 spreads out each light beam outward
It penetrates, so that each light beam is unsatisfactory for the inner full-reflection condition of planar optics waveguide, the output coupling grating 133 is to external diffraction
Whole light beams leave planar optics waveguide 13 and form image, the image and corresponding input coupling grating 131 are coupled into plate
The associated image of whole light beams of optical waveguide is corresponding and has corresponding sub- field angle；Each output coupling grating 133 to
The image with corresponding sub- field angle of external diffraction can be watched from same emergent pupil and mutually splicing, constitutes a tool
There is a complete image at corresponding big visual angle, the big field angle of the complete image is from each output coupling grating 133 to the figure of external diffraction
As corresponding sub- field angle merges to obtain.
To which the utility model is the light beam point of image that is related to entrance pupil by multiple and having corresponding sub- field angle
It is not coupled into planar optics waveguide from the different input coupling gratings of planar optics waveguide, the light beam of different images is by respectively opposite
It is directed to emergent pupil together after the relaying grating and output coupling grating answered, so as to observe simultaneously in emergent pupil
The multiple images for projecting planar optics waveguide, the image that each image is respectively used in certain sub- visual field scope show,
By image mosaic, increase the simple eye field angle of equipment.Due to each related to entrance pupil and with corresponding sub- field angle
The light beam of image passes through an independent input coupling grating respectively and is coupled into planar optics waveguide, and uses and input coupling light
The relaying grating and output coupling grating that grid are arranged in a one-to-one correspondence independently guide the light beam of each image, thus input
The quantity of image related to entrance pupil and with corresponding sub- field angle is unrestricted, each output coupling of the utility model
Grating can export maximum 35 ° or so of diagonal angles of visual field, thus the utility model can integrally obtain in target zone
All field angles, be far longer than existing equipment attainable 70 ° of the limit.An output is also not present in the utility model simultaneously
Coupling grating needs to assemble the problem of two incident light electron guns, and the brightness of image uniformity of output does not need additional adjusting
Component is modulated the image of input.
Each output coupling grating 133 can be from same emergent pupil to the image with corresponding sub- field angle of external diffraction
It is watched and is mutually spliced, constitute a complete image with corresponding big visual angle, the big field angle of the complete image is by each
The corresponding sub- field angle of the image of output coupling grating 133 to external diffraction merges to obtain
To which the utility model is the light beam point of image that is related to entrance pupil by multiple and having corresponding sub- field angle
It is not coupled into planar optics waveguide from the different input coupling gratings of planar optics waveguide, the light beam of different images is by respectively opposite
It is directed to emergent pupil together after the relaying grating and output coupling grating answered, so as to observe simultaneously in emergent pupil
The multiple images for projecting planar optics waveguide, the image that each image is respectively used in certain sub- visual field scope show,
By image mosaic, increase the simple eye field angle of equipment.Due to each related to entrance pupil and with corresponding sub- field angle
The light beam of image passes through an independent input coupling grating respectively and is coupled into planar optics waveguide, and uses and input coupling light
The relaying grating and output coupling grating that grid are arranged in a one-to-one correspondence independently guide the light beam of each image, thus input
The quantity of image related to entrance pupil and with corresponding sub- field angle is unrestricted, each output coupling of the utility model
Grating can export maximum 35 ° or so of diagonal angles of visual field, thus the utility model can integrally obtain in target zone
All field angles, be far longer than existing equipment attainable 70 ° of the limit.An output is also not present in the utility model simultaneously
Coupling grating needs to assemble the problem of two incident light electron guns, and the brightness of image uniformity of output does not need additional adjusting
Component is modulated the image of input.
As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, the number of image that is related to entrance pupil and having corresponding sub- field angle can
Think two, three, four or any number of, only need to be arranged in planar optics waveguide the input coupling grating of respective numbers with
And corresponding relaying grating and output coupling grating.It is each described related to entrance pupil and there is accordingly sub- field angle
Image be a general image topography, last multiple topographies are spliced to form complete general image, to increase
The simple eye field angle of big equipment, any two are related to entrance pupil and there is the image of corresponding sub- field angle horizontal can splice
Or vertical splicing.According to the use needs of equipment, multiple output coupling gratings 133 can with the form that arbitrarily needs into
Row arrangement, such as: can be arranged successively, can also vertically be arranged successively in the horizontal direction, can also with arranged in arrays etc.,
Horizontal splicing, vertical splicing, matrix splicing etc. to realize the image that each output coupling grating 133 is emitted.For example, for
The image related to entrance pupil and that there is corresponding sub- field angle of any two level splicing, the horizontal view of one of image
Rink corner is a °-b °, and the horizontal field of view angle of another image is b °-c ° or d °-a °, the two images pass through planar optics waveguide not
With input coupling grating, relaying grating and the conduction of output coupling grating, and two output coupling gratings are horizontally arranged, then this
The horizontal field of view angle for the image that the image level of two output coupling gratings outgoing splices is a °-c ° or d °-b °.Example again
Such as, the image related to entrance pupil and that there is corresponding sub- field angle any two vertically spliced, one of image
Vertical field of view angle be a °-b °, the vertical field of view angle of another image is b °-c ° or d °-a °, then the two images pass through plate
The different input coupling grating of optical waveguide, relaying grating and the conduction of output coupling grating, and two output coupling gratings hang down
The horizontal field of view angle of in line column, the then image that the image of the two output coupling gratings outgoing vertically splices is a °-c °
Or d °-b °.Similarly, multiple topography's splicings can obtain target level field angle and target vertical field angle.
Such as shown in Fig. 1-Fig. 3, giving quantity that is related to entrance pupil and having the image of corresponding sub- field angle is
Two, two output coupling gratings 133 arrange in the horizontal direction, two outgoing image level splicing embodiment structure
Figure, corresponding field angle is zero degree to maximum horizontal after the image of one of image source 11 is transmitted by planar optics waveguide 13
Field angle (such as 40 °), corresponding field angle is negative after the image of another image source 11 is transmitted by planar optics waveguide 13
Maximum horizontal field angle (such as -40 °) arrives zero degree, and positive and negative represents corresponding direction, and 80 ° of visual field can be realized by splicing
Angle.
As Fig. 4 quantity for giving image that is related to entrance pupil and having corresponding sub- field angle is four, four it is defeated
The structure chart for the embodiment that coupling grating 133 is arranged in arrays out, four images being emitted are in matrix splicing, the embodiment both increased
Big horizontal field of view angle, also increases vertical field of view angle.As Fig. 5,6 give related to entrance pupil and have corresponding sub- visual field
The quantity of the image at angle is four, four output coupling gratings 133 are arranged successively in the horizontal direction, four image levels being emitted
The structure chart of the embodiment of splicing, to increase horizontal field of view angle.
Preferably, output coupling grating 133 is located at the middle position of planar optics waveguide 13 as far as possible, but it is not limited to
This.Input coupling grating 131 can be set in any position of planar optics waveguide 13, be not restricted by, but match for convenience
The light engine for emitting image beam is set, and reduces the influence to user's visual field as far as possible, input coupling grating 131 can be set
It is placed in the edge or edge of planar optics waveguide 13.
Each light beam carry out level that the relaying grating 132 is configured as being directed onto relaying grating 132 expand and
It vertically one of expands and expands, the output coupling grating 133 is configured as being directed onto the every of output coupling grating 133
One light beam carry out level expands and the another kind in vertically expanding expands.
The level expands or vertically expands the width for referring to and being incident to each light beam of grating along the grating
Direction is directed on multiple extended areas of the grating, and multiple extended areas of grating realize the extension to each light beam, with
The multiple parallel beamlets for forming the light beam achieve the effect that the exit pupil diameter for extending light beam.The light expanded for carry out level
For grid, multiple extended areas of the grating are set gradually in the horizontal direction, for the grating vertically expanded, the light
Multiple extended areas of grid are vertically set gradually.Diffraction efficiency realization by adjusting each expansion area expands and guarantees to expand
Put on display the brightness uniformity of pupil.
Further, the complete graph respectively related to entrance pupil and that there is the image of corresponding sub- field angle to constitute at it
The output coupling grating corresponding to the locating orientation image related with entrance pupil and with corresponding sub- field angle to being somebody's turn to do as in
133 orientation locating in planar optics waveguide 13 are consistent.So that light beam of each output coupling grating 133 to external diffraction
The image of formation, which is in, is spliced to form complete image desired position.
The output coupling grating 133 of planar optics waveguide 13 is configured in the simple eye front of user, to be formed to user's list
The visible image of eye.Planar optics waveguide 13 is substantially transparent, so that user not only can watch entrance pupil correlation simultaneously
Image with corresponding sub- field angle can also watch the image from real world through planar optics waveguide 13.To make
The utility model can be used for augmented reality show equipment reach by the image superposition being spliced to form in real world
Improve the technical effect of enhancing display equipment field angle.
After being relative to the location of planar optics waveguide 13 with eyes of user, the planar optics waveguide 13 includes
Former and later two surfaces being parallel to each other.Input coupling grating 131, relaying grating 132 and the output coupling of planar optics waveguide 13
Grating 133 can be laid in the surface or inside of planar optics waveguide 13.Input coupling grating 131, relaying grating 132 and output
Coupling grating 133 can be transmission grating or reflecting grating, and different and optical path according to above-mentioned grating installation position need to select
With the grating of respective type.
The light beam of the image related to entrance pupil and with corresponding sub- field angle is provided by light engine, light engine
Including image source 11 and eyepiece optics device 12, image source 11 includes micro-display, and micro-display can be handled for digital light
(DLP) display, liquid crystal on silicon (LCOS) display, LCD display, OLED display, optical fiber scanning display and MEMS are swept
Retouch any one in image display system.The preferred micro-display uses optical fiber scanning display, with volume
Small, light-weight feature enables to use in conjunction with the objective feature for needing to configure multiple images source 11 in the utility model
The practicability of the equipment of the utility model, convenience are obviously improved.And similar digital light processing (DLP) display, silicon substrate
Liquid crystal (LCOS) display, LCD display, OLED display, optical fiber scanning display and MEMS scan image display system are equal
Have the characteristics that modular construction is complicated, volume is big, weight is big, a display system or mould group using an aforementioned display device just
With sizable volume and weight, especially for helmet, a display system uses two or more above-mentioned displays
Device bring large volume, big weight cannot be easily accepted by a user.
The eyepiece optics device 12 generally comprises collimation lens, is used to amplify and is imaged and emits image source 11
Whole light beams are collimated, and whole light beams after collimation are injected planar optics waveguide 13, further, the whole after collimation
The input coupling grating 131 of light beam directive planar optics waveguide 13.The area of input coupling grating 131 is greater than eyepiece optics device
12 project light beams diameter, thus guarantee eyepiece optics device 12 be emitted, be used to form the image with respective field of vision angle
Whole light beam couplings enter planar optics waveguide 13.
The nearly eye display optical system of above-mentioned simple eye big visual field can be incorporated into mixed reality and show equipment or augmented reality
It shows in equipment, but not limited to this.The single embodiment of the nearly eye display optical system of above-mentioned simple eye big visual field can be supplied to use
Each of the left eye and right eye at family.Thus on the other hand the utility model provides a kind of head-mounted display apparatus, including upper
The nearly eye display optical system of the simple eye big visual field of any one stated and the component of wearing for being worn on user's head, simple eye big view
Nearly eye display optical system be mounted on it is described wear on component and be oriented its output coupling grating 133 direct the light beam into
On the eyes of wearer.
Described wearing also sets up multiple light engines on component, each light engine is used to be formed described with entrance pupil phase
Close and have the light beam of the image of corresponding sub- field angle.
The head-mounted display apparatus has a nearly eye display optical system of a simple eye big visual field, the nearly eye of simple eye big visual field
Display optical system is oriented its output coupling grating 133 and directs the light beam on the left eye or right eye of wearer.
For the described head-mounted display apparatus tool there are two the nearly eye display optical system of simple eye big visual field, one of them is simple eye big
The nearly eye display optical system of visual field is oriented its output coupling grating 133 and directs the light beam on the left eye of wearer, in addition
The nearly eye display optical system of one simple eye big visual field is oriented the right side that its output coupling grating 133 directs the light beam into wearer
On eye.
A planar optics wave is shared as the nearly eye display optical system of one preferred embodiment two simple eye big visual fields
13 are led, then the nearly eye of two simple eye big visual fields is respectively arranged at the required position of the planar optics waveguide 13 and shows optical system
Input coupling grating 131, relay part 132, the output coupling grating 133 of system.
The component of wearing includes that frame, the helmet or headband etc. can be worn on the component in account.
The light engine can be located at the side for wearing component, be located at the outside of two eyes of user；It can also be with
Positioned at the top of the bridge of the nose of user；It can also be located above or below two eyes of user.Being preferably located at does not influence to use
The position in the family visual field.Since the image source 11 of the application and its corresponding eyepiece optics device 12 can both be located at planar optics wave
Lead 13 rear side, can also be located at planar optics waveguide 13 front side, as shown in Figure 1, thus easily can wear component
The required amount of image source 11 of upper setting and its corresponding eyepiece optics device 12.Further, as preferred image source 11,
Optical fiber scanning display feature small in size, light-weight, so that the practicability of the utility model is further promoted, so that this is practical
Novel head-mounted display apparatus has good display performance and wearing comfort simultaneously.
The utility model is limited it should be noted that above-described embodiment illustrates rather than the utility model,
And those skilled in the art can be designed alternative embodiment without departing from the scope of the appended claims.In right
In it is required that, any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" or " packet
Include " do not exclude the presence of element or step not listed in the claims.Word "a" or "an" located in front of the element is not arranged
Except there are multiple such elements.The utility model can be by means of including the hardware of several different elements and by means of suitable
When the computer of programming is realized.In the unit claims listing several devices, several in these devices can be with
It is to be embodied by the same item of hardware.The use of word first, second, and third does not indicate any sequence, can
These words are construed to title.
One or more technical solution in the utility model embodiment, at least has the following technical effect that or excellent
Point:
Difference of the utility model by the light beam of input according to light color is respectively processed, by monochromatic waveguide to monochrome into
Row transmission, reduces light energy losses, image quality is more preferable.
By the light beam of image multiple related to entrance pupil and that there is corresponding sub- field angle respectively from planar optics waveguide
Different input coupling gratings be coupled into planar optics waveguide, the light beams of different images is by respective corresponding relaying grating and defeated
It is directed to emergent pupil together after coupling grating out, so as to observe the injection planar optics simultaneously in emergent pupil
The multiple images of waveguide, the image that each image is respectively used in certain sub- visual field scope are shown, by image mosaic, are increased
The simple eye field angle of equipment.
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
The utility model is not limited to specific embodiment above-mentioned.The utility model expands to any in this specification
The new feature of middle disclosure or any new combination, and disclose any new method or process the step of or any new group
It closes.
Claims (10)
1. a kind of nearly eye display optical system of simple eye big visual field characterized by comprising
The first monochromatic planar optics waveguide, the second monochromatic planar optics waveguide and the third monochrome for stacking gradually setting along optical path are flat
Plate optical waveguide,
The first monochromatic input coupling grating, the second monochromatic input coupling grating and the third monochrome input coupling set gradually along optical path
Light combination grid,
The first monochromatic output coupling grating, the second monochromatic output coupling grating and the third monochrome output coupling set gradually along optical path
Light combination grid,
And it is set to the first relaying grating in the first monochromatic planar optics waveguide, is set in the second monochromatic planar optics waveguide
Second relaying grating and be set in third monochrome planar optics waveguide third relaying grating；
First monochromatic input coupling grating is set in the first monochromatic planar optics waveguide, and being used for will be with incident planar optics waveguide
Image it is corresponding first monochromatic optically coupling in the first monochromatic planar optics waveguide；Second monochromatic input coupling grating setting
In in the second monochromatic planar optics waveguide, for by the corresponding with the image of incident planar optics waveguide second monochromatic optical coupling
Into the second monochromatic planar optics waveguide；Third monochrome input coupling grating is set in third monochrome planar optics waveguide, is used
In by third monochrome corresponding with the image of incident planar optics waveguide optically coupling in third monochrome planar optics waveguide,
First monochromatic input coupling grating is coupled into the first monochromatic planar optics waveguide and in the first monochrome by the first relaying grating
First monochromatic light of planar optics waveguide total internal reflection transmission carries out diffraction, it is made to be all-trans in the first monochromatic planar optics waveguide
It penetrates and is transmitted to the first monochromatic output coupling grating；Second monochromatic input coupling grating is coupled into the second monochrome by the second relaying grating
Planar optics waveguide simultaneously carries out diffraction in the second monochromatic light of the second monochromatic planar optics waveguide total internal reflection transmission, make its
Second monochromatic planar optics waveguide total internal reflection is transmitted to the second monochromatic output coupling grating；Third relays grating for third monochrome
Input coupling grating is coupled into third monochrome planar optics waveguide and in the transmission of third monochrome planar optics waveguide total internal reflection
Third monochromatic light carries out diffraction, it is made to be transmitted to third monochrome output coupling light in third monochrome planar optics waveguide total internal reflection
Grid；
First monochromatic output coupling grating is set in the first monochromatic planar optics waveguide, and being used for will be with incident planar optics waveguide
The monochromatic planar optics waveguide of the corresponding first monochromatic light decoupling of image first；Second monochromatic output coupling grating is set to the
In two monochromatic planar optics waveguides, for by the second monochromatic light decoupling second corresponding with the image of incident planar optics waveguide
Monochromatic planar optics waveguide；Third monochrome output coupling grating is set in third monochrome planar optics waveguide, for will with enter
The corresponding third monochromatic light decoupling third monochrome planar optics waveguide of image of planar optics waveguide is penetrated,
First monochromatic output coupling grating, the second monochromatic output coupling grating and third monochrome output coupling grating outgoing beam
Direction is towards side locating for eyes of user.
2. the as described in claim 1 a kind of nearly eye display optical system of simple eye big visual field, which is characterized in that described first is single
The waveguide of color planar optics, the second monochromatic planar optics waveguide and third monochrome planar optics waveguide constitute planar optics waveguide, edge
The first monochromatic input coupling grating, the second monochromatic input coupling grating and the third monochrome input coupling that same optical path is set gradually
One input coupling grating of optical grating constitution, the first relaying grating corresponding with the same input coupling grating, the first relaying light
Grid and third relay one relaying grating of optical grating constitution, corresponding with the same input coupling grating and successively set along same optical path
The monochromatic output coupling grating of first set, the second monochromatic output coupling grating and third monochrome output coupling optical grating constitution output one
A coupling grating, the planar optics waveguide have multiple input coupling gratings and correspond with each input coupling grating
The relaying grating and output coupling grating of setting, each input coupling grating is used to will be corresponding and have corresponding sub- visual field
Angle and enter planar optics waveguide with whole light beam couplings of the associated image of entrance pupil, is made by each light beam of diffraction described
Light beam meets the inner full-reflection condition of the planar optics waveguide in planar optics waveguide, and each light beam is guided to phase
Each light beam is directed to corresponding output coupling grating by each light beam of diffraction by the relaying grating answered, relaying grating, is exported
Coupling grating by each light beam to external diffraction so that each light beam is unsatisfactory for the inner full-reflection condition of planar optics waveguide, institute
It states output coupling grating to leave planar optics waveguide to whole light beams of external diffraction and form image, the image and corresponding input coupling
The associated image of whole light beams that light combination grid are coupled into planar optics waveguide is corresponding and have corresponding sub- field angle；It is each defeated
Coupling grating can be watched from same emergent pupil to the image with corresponding sub- field angle of external diffraction and mutually be spelled out
Connect, constitute a complete image with corresponding big visual angle, the big field angle of the complete image be from each output coupling grating to
The corresponding sub- field angle of the image of external diffraction merges to obtain.
3. the as claimed in claim 2 a kind of nearly eye display optical system of simple eye big visual field, which is characterized in that described is multiple defeated
Coupling grating is arranged successively in the horizontal direction or is vertically arranged successively or arranged in arrays out.
4. the as claimed in claim 2 a kind of nearly eye display optical system of simple eye big visual field, which is characterized in that the relaying light
Each light beam carry out level that grid are configured as being directed onto relaying grating, which one of is expanded and vertically expanded, to be expanded, described
During each light beam carry out level that output coupling grating is configured as being directed onto output coupling grating is expanded and is vertically expanded
Another kind expands.
5. the nearly eye display optical system of a kind of simple eye big visual field as claimed in claim 2 or claim 3, which is characterized in that with incident light
The related and number with the accordingly image of sub- field angle of pupil is two, three, four or any number of.
6. the as claimed in claim 2 a kind of nearly eye display optical system of simple eye big visual field, which is characterized in that the plate light
The output coupling grating for learning waveguide is configured in the simple eye front of user, to form visible image simple eye to user.
7. a kind of head-mounted display apparatus, which is characterized in that including the simple eye big view as described in any one of claim 1-6
Nearly eye display optical system and the component of wearing for being worn on user's head, the nearly eye display optical system peace of simple eye big visual field
It wears on component and is oriented on the eyes that its output coupling grating directs the light beam into wearer mounted in described.
8. a kind of head-mounted display apparatus as claimed in claim 7, which is characterized in that the head-mounted display apparatus has
The nearly eye display optical system of one simple eye big visual field, the nearly eye display optical system of simple eye big visual field are oriented its output coupling light
Grid direct the light beam on the left eye or right eye of wearer.
9. a kind of head-mounted display apparatus as claimed in claim 7, which is characterized in that the head-mounted display apparatus has
The nearly eye display optical system of two simple eye big visual fields, it is defeated that the nearly eye display optical system of one of them simple eye big visual field is oriented its
Coupling grating directs the light beam on the left eye of wearer out, and the nearly eye display optical system of another simple eye big visual field is positioned
It is directed the light beam on the right eye of wearer at its output coupling grating.
10. a kind of head-mounted display apparatus as claimed in claim 7, which is characterized in that it is described wear component include frame,
The helmet or headband etc. can be worn on the component in account.
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| CN201820261197.8U CN208314330U (en) | 2018-02-13 | 2018-02-13 | A kind of nearly eye display optical system of simple eye big visual field and head-mounted display apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820261197.8U CN208314330U (en) | 2018-02-13 | 2018-02-13 | A kind of nearly eye display optical system of simple eye big visual field and head-mounted display apparatus |
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