CN107305291A - A kind of near-eye display system - Google Patents
A kind of near-eye display system Download PDFInfo
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- CN107305291A CN107305291A CN201610257778.XA CN201610257778A CN107305291A CN 107305291 A CN107305291 A CN 107305291A CN 201610257778 A CN201610257778 A CN 201610257778A CN 107305291 A CN107305291 A CN 107305291A
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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
- G02B27/02—Viewing or reading apparatus
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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
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Abstract
The invention discloses a kind of near-eye display system, including image source and array image-forming device, the array image-forming device includes at least two imaging minute surfaces, and the corresponding emergent pupil in all imaging lens faces is stitched together；The image light exported by described image source, human eye formation projected image is reflexed to through the array image-forming device；Ambient light is transmitted into human eye formation ambient image by the array image-forming device.Because array image-forming device includes at least two imaging minute surfaces, and the corresponding emergent pupil in all imaging lens faces is stitched together, equivalent to the exit pupil diameter for expanding augmented reality equipment, so that the image light of augmented reality equipment output is more easily entered in the pupil of eyes, so compared with the emergent pupil of single optical lens, the emergent pupil that this programme is provided is significantly increased, so as to reduce or avoid the strict limitation to the position of eye-observation, and then the applicable crowd of augmented reality equipment is expanded, and interpupillary distance regulation is carried out to augmented reality equipment without user.
Description
Technical field
The present invention relates to augmented reality field, more particularly to a kind of near-eye display system.
Background technology
Augmented reality (English：Augmented Reality；Referred to as：AR), it is that real enhanced technology is carried out to real scene using dummy object or information.Augmented reality, which is typically based on, images the actual physical situation image that first-class image capture device is obtained; pass through computer system discriminance analysis and query and search; the virtual image virtually generated in the presence of content of text, picture material or iconic model of association etc. therewith is included in actual physical situation image; so that user results in the related expanding information such as mark, the explanation of real-world object in the real physical environment being in, or experience three-dimensional, the enhancing visual effect that highlights of real-world object in real physical environment.
Existing augmented reality equipment, by the pupil of the convergence of rays of virtual image to user, has stricter limitation typically by optical lens to the position of eye-observation.When the pupil position of user changes, the Rotation of eyeball of such as user, or the different user of two interpupillary distances successively using same augmented reality equipment when, user is needed to adjust the interpupillary distance of augmented reality equipment, or interpupillary distance regulation is carried out by augmented reality equipment automatically, but the current precision of both is not high, the light of virtual image, which can be caused, can not fully enter human eye, so that augmented reality equipment sends virtual image without normal direction user, or the effect of the virtual image sent is not good, it can not then be experienced to user with good augmented reality.
Therefore, because augmented reality equipment has stricter limitation to the position of eye-observation present in prior art, and lead to not to user with the technical problem of good augmented reality experience.
The content of the invention
It is an object of the invention to provide a kind of near-eye display system, larger emergent pupil can be provided, the position of eye-observation is not limited, solve because augmented reality equipment has stricter limitation to the position of eye-observation present in prior art, and lead to not to user with the technical problem of good augmented reality experience.
In order to realize foregoing invention purpose, the invention provides a kind of near-eye display system, including image source and array image-forming device, the array image-forming device includes at least two imaging minute surfaces, and the corresponding emergent pupil in all imaging lens faces is stitched together；
The image light exported by described image source, human eye formation projected image is reflexed to through the array image-forming device；Ambient light is transmitted into human eye formation ambient image by the array image-forming device.
Alternatively, the imaging minute surface is set gradually by the transmission direction of described image light, and reflection efficiency strengthens successively.
Alternatively, described image source is specifically included：
Lighting source, for providing illuminating ray；
In reflective image source, the light path for being arranged on the illuminating ray, for sending described image light in the presence of the illuminating ray.
Alternatively, described image source is specifically included：
Light source, for providing original light；
In scanning means, the light path for being arranged on the original light, for the original light to be entered into horizontal deflection, described image light is formed.
Alternatively, the scanning means is specially MEMS scanning galvanometers or fibre-optic scanner.
Alternatively, the imaging lens mask body is reflective diffraction minute surface or transmissive diffraction minute surface.
Alternatively, the array image-forming device includes：
Leaded light device, for guiding described image light；
It is imaged mirror array, it is arranged in front of human eye, it is made up of at least two imaging minute surfaces, when described image light is by the imaging minute surface, each imaging minute surface is when a part for described image light is reflected to human eye direction, also press another part in the direction of propagation of the described image light in the leaded light device, transmission described image light.
Alternatively, the leaded light device is specially planar light waveguide.
Alternatively, the imaging lens mask body is diffraction minute surface, and the diffraction minute surface is arranged in the way of in face of human eye on the leaded light device.
Alternatively, the corresponding structure in the diffactive lens face is fitted in the relevant position of the leaded light device, or the relevant position of the leaded light device is made as into the diffraction mirror surface structure.
Alternatively, the imaging lens mask body for can the minute surface that is formed of anti-permeable membrane layer, it is described can anti-permeable membrane layer reflecting surface towards the human eye.
One or more technical scheme in the embodiment of the present invention, at least has the following technical effect that or advantage：
Because array image-forming device includes at least two imaging minute surfaces, and the corresponding emergent pupil in all imaging lens faces is stitched together, equivalent to the exit pupil diameter for expanding augmented reality equipment, so that the image light of augmented reality equipment output is more easily entered in the pupil of eyes, so compared with the emergent pupil of single optical lens, the emergent pupil that this programme is provided is significantly increased, so as to reduce or avoid the strict limitation to the position of eye-observation, and then expand the applicable crowd of augmented reality equipment, and interpupillary distance regulation is carried out to augmented reality equipment without user, user be it also avoid because regulation result inaccurately leads to not obtain the defect that good augmented reality is experienced.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below by using required in embodiment or description of the prior artAccompanying drawingIt is briefly described, it should be apparent that, in describing belowAccompanying drawingOnly some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, can also be according to theseAccompanying drawingObtain otherAccompanying drawing：
Figure 1For the module of near-eye display system provided in an embodiment of the present inventionFigure；
Figure 2The signal of the first implementation of the near-eye display system provided for embodiment oneFigure；
Figure 3AThe first light path for near-eye display system in vertical direction is illustratedFigure；
Figure 3BSecond of light path for near-eye display system in vertical direction is illustratedFigure；
Figure 4For the signal of second of implementation of near-eye display system provided in an embodiment of the present inventionFigure；
Figure 5For the signal of the third implementation of near-eye display system provided in an embodiment of the present inventionFigure；
Figure 6For the signal of the 4th kind of implementation of near-eye display system provided in an embodiment of the present inventionFigure。
Embodiment
Below in conjunction with the embodiment of the present inventionAccompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
The embodiment of the invention discloses a kind of near-eye display system, in actual applications, the near-eye display system can be applied in HMD (English：Head Mount Display；Chinese：Wear formula visual device), in the augmented reality equipment such as intelligent glasses, be not limited herein.
It refer toFigure 1,Figure 1For the module of near-eye display system provided in an embodiment of the present inventionFigure,As schemed 1Shown, the near-eye display system includes image source 10 and array image-forming device 20, and array image-forming device 10 includes at least two imaging minute surfaces, and the corresponding visual field in all imaging lens faces and emergent pupil are stitched together；Image source 10 for example can be using LASER Light Source, LED (English：Light Emitting Diode；Chinese：Light emitting diode) light source etc. output image；Imaging lens mask body can for can anti-permeable membrane the layer minute surface or reflective diffraction minute surface or transmissive diffraction minute surface that are formed, be not limited herein.
In specific implementation process, the image light exported by image source 10 reflexes to human eye formation projected image through array image-forming device 20；Ambient light is transmitted into human eye formation ambient image by array image-forming device 20.
It can be seen that, because array image-forming device includes at least two imaging minute surfaces, and the corresponding emergent pupil in all imaging lens faces is stitched together, equivalent to the exit pupil diameter for expanding augmented reality equipment, so that the image light of augmented reality equipment output is more easily entered in the pupil of eyes, so compared with the emergent pupil of single optical lens, the emergent pupil that this programme is provided is significantly increased, so as to reduce or avoid the strict limitation to the position of eye-observation, and then expand the applicable crowd of augmented reality equipment, and interpupillary distance regulation is carried out to augmented reality equipment without user, user be it also avoid because regulation result inaccurately leads to not obtain the defect that good augmented reality is experienced.
In ensuing part, it will combineAccompanying drawing, detailed citing introduction is carried out to above-mentioned technical proposal.
Embodiment one
It refer toFigure 2,Figure 2The signal of the first implementation of the near-eye display system provided for embodiment oneFigure,As schemed 2Shown, the image source 10 includes：
Lighting source, for sending illuminating ray；In the present embodiment, lighting source can be generating device of laser 101,As schemed 2It is shown, generating device of laser includes red laser generating unit 1011, green laser generating unit 1012 and blue laser generating unit 1013, in another embodiment, the color of the generating unit of each in generating device of laser can be configured according to actual needs, the need for meeting actual conditions, it is not limited herein；In other embodiments, lighting source can also be LED/light source, be then classified as feux rouges, green glow and blue light by spectroscope, be not limited herein.
Reflective image source, is arranged in the light path of illuminating ray, for sending image light source in the presence of illuminating ray；In the present embodiment, it refer toFigure 2, reflective image source is specially LCOS (English：Liquid Crystal on Silicon；Chinese：Liquid crystal on silicon) display 102.
Please continue to refer toFigure 2,As schemed 2It is shown, in the present embodiment, image source 10 also includes laser alignment and apparatus for shaping 103, laser alignment and apparatus for shaping 103 are arranged in the light path for the laser that generating device of laser 101 is sent, for being collimated to the laser that generating device of laser 101 is sent, expand and Shape correction, specifically, laser alignment and apparatus for shaping 1013 include red laser collimator and extender and shaping unit 1031, green laser collimator and extender and shaping unit 1032 and blue laser collimator and extender and shaping unit 1033, respectively to red laser generating unit 1011, the laser that green laser generating unit 1012 and blue laser generating unit 1013 are sent is collimated, expand and Shape correction, under normal circumstances, alignment precision may be required in several milliradians, just repeat no more herein.
Please continue to refer toFigure 2, image source 10 is also including Multiplexing apparatus 104, and in the present embodiment, Multiplexing apparatus 104 is arranged in the light path of laser alignment and apparatus for shaping 103, and the Laser synthesizing for will be sent by generating device of laser 101 is a light path, specifically,As schemed 2It is shown, Multiplexing apparatus 104 includes dichroscope 1041, dichroscope 1042 and dichroscope 1043, wherein, dichroscope 1041 reflects feux rouges, the transmission of dichroscope 1042 feux rouges, reflection green glow, the transmission of dichroscope 1043 red-green glow, reflection blue light, so that the Laser synthesizing that red laser generating unit 1011, green laser generating unit 1012 and blue laser generating unit 1013 are sent is a light path, are just repeated no more herein.
Please continue to refer toFigure 2, in the present embodiment, image source 10 also includes polarization splitting prism (English：polarization beam splitter；Referred to as：PBS) 105, polarization splitting prism 105 is arranged in the light path of Multiplexing apparatus 104, after the light that Multiplexing apparatus 104 is exported is entered in polarization splitting prism 105, the light of P polarization can be transmitted, and the light of S-polarization can reflex to LCOS display 102, in the presence of the light of S-polarization, LCOS display 102 passes through internal liquid crystal modulation, so as to output image light, just repeat no more herein.
Please continue to refer toFigure 2,As schemed 2It is shown, in the present embodiment, image source 10 also includes filter 106, filter 106 is arranged on the emitting light path of polarization splitting prism 105, for filtering out the diffracted beam that LCOS display 102 is likely to form, specifically, filter 106 specifically includes condenser lens 1061, diaphragm 1062 and collimation lens 1063, condenser lens 1061 is used to be focused processing to the image light of LCOS display 102 transmitted through polarization splitting prism 105, diaphragm 1062 is used to be filtered processing to being focused the image light after lens 1061 are focused on, filter out diffracted beam therein, collimation lens 1063 is used for carrying out collimation processing by the filtered image light of diaphragm 1062, and the image light after processing is output to array image-forming device 20.
In specific implementation process, array image-forming device 20 specifically includes leaded light device 201 and imaging mirror array 202, leaded light device 201 is used for navigational figure light, imaging mirror array 202 is arranged in front of human eye, it is made up of at least two imaging minute surfaces, when image light is by imaging minute surface, each imaging minute surface by a part for image light when reflexing to human eye, also press another part in the direction of propagation of the image light in leaded light device, transmission image light.
In specific implementation process, leaded light device 201 is specifically as follows planar light waveguide.
In order to also be extended leaded light in vertical direction, it please also refer toFigure 3A,Figure 3AThe first light path for near-eye display system in vertical direction is illustratedFigure, it is succinct for specification,Figure 3In illustrate only vertical direction in leaded light device 201 light path signalFigure,As schemed 3AShown, leaded light device 201 includes vertical extension waveguide 2011, and this, which vertically extends waveguide 2011, is used to also be extended leaded light in vertical direction,As schemed 3AIt is shown, vertical extension waveguide 2011 includes 4 guide-lighting minute surfaces, 4 guide-lighting minute surfaces are respectively 20111, 20112, 20113 and 20114, 4 minute surfaces are specifically as follows can the minute surface that is formed of anti-permeable membrane layer, in order to ensure the uniformity of vertical direction intensity of light, the reflectivity of guide-lighting minute surface 20111 can be set to 25%, the reflectivity of guide-lighting minute surface 20112 is set to 33%, the reflectivity of guide-lighting minute surface 20113 is set to 50%, the reflectivity of guide-lighting minute surface 20114 is set to 100%, so, the beam intensity for ensureing each imaging surface outgoing is the 25% of total light intensity.Certainly, numerical value shown here is only a citing, and reflectivity can be set to suitable numerical value, the need for meeting actual conditions, just repeated no more herein by the technical staff belonging to this area according to actual conditions.
In specific implementation process, exceptAs schemed 3AOutside shown light path mode, it can also useAs schemed 3BShown light path mode, refer toFigure 3B,Figure 3BSecond of light path for near-eye display system in vertical direction is illustratedFigure,As schemed 3BIt is shown, at least two image sources 10 can also be set in vertical direction, in the present embodiment, there is provided 4 image sources, the luminous intensity for the image light that each image source is sent is identical, so, also the light intensity uniform in vertical direction is ensure that, is just repeated no more herein.
Please continue to refer toFigure 2,As schemed 2Shown, in the present embodiment, leaded light device 201 is specific also to include horizontal waveguide, and the image light exported by vertically extending waveguide 2011 enters after horizontal waveguide, is propagated forward under the guiding function of horizontal waveguide, until encountering imaging mirror array 202；In the present embodiment, imaging lens mask body for can the minute surface that is formed of anti-permeable membrane layer,As schemed 2It is shown, image light often by one can anti-permeable membrane layer, i.e., a part for image light can reflex to human eye, and the direction of propagation transmission by another part along image light, it is multiple can the emergent pupil of anti-permeable membrane layer be stitched together, equivalent to the exit pupil diameter for expanding augmented reality equipment.
Pass through the introduction of the present embodiment, technical staff belonging to this area can be according to actual conditions, for in imaging mirror array 202 it is multiple can anti-permeable membrane layer suitable parameter is set, such as angle of inclination, spacing etc., enable it is multiple can the emergent pupil of anti-permeable membrane layer be stitched together, further so that it is multiple can the splicing view field of anti-permeable membrane layer can cover whole image source visual field, so as to realize the imaging of big visual field, just repeat no more herein.
In order to ensure the uniform of horizontal direction luminous intensity, in the present embodiment, being imaged mirror array 202 includes minute surface 2021,2022,2023,2024 and 2025, the reflectivity of minute surface 2021 can be set to 20%, the reflectivity of minute surface 2022 is set to 25%, the reflectivity of minute surface 2023 is set to 33%, the reflectivity of minute surface 2024 is set to 50%, the reflectivity of minute surface 2025 is set to 100%, so, the luminous intensity of each minute surface outgoing is the 20% of total light intensity degree.Certainly, numerical value shown here is only a citing, and reflectivity can be set to suitable numerical value, the need for meeting actual conditions, just repeated no more herein by the technical staff belonging to this area according to actual conditions.It can be seen that, using " imaging minute surface set gradually by the transmission direction of image light, and reflection efficiency strengthens successively " this scheme, ensure that the uniformity of horizontal direction intensity of light, so as to user with good visual experience.
It should be noted that, in the present embodiment, because imaging lens mask body is can the minute surface that is formed of anti-permeable membrane layer, can anti-permeable membrane layer so needing first to plate first layer in first piece of horizontal waveguide in leaded light device 201, again it is glued be coated with the second layer can anti-permeable membrane layer second piece of horizontal waveguide simultaneously, by that analogy, until all imaging minute surfaces are all completed, to plated can anti-permeable membrane layer uniformity requirements it is higher, above-mentioned light splitting function can be realized exactly, and processing cost and difficulty of processing are all higher.
It can be seen that, due to can the emergent pupil splicing of imaging minute surface that is formed of anti-permeable membrane layer together, equivalent to the exit pupil diameter for expanding augmented reality equipment so that the image light of augmented reality equipment output is more easily entered in the pupil of eyes, for example, no matter the eyes of user beAs schemed 2In position shown in 301, or the position shown in 302, or the position shown in 303, image light can enter in the pupil of eyes, so as to reduce or avoid the strict limitation to the position of eye-observation, and then the applicable crowd of augmented reality equipment is expanded, and interpupillary distance regulation is carried out to augmented reality equipment without user, user is it also avoid because regulation result inaccurately leads to not obtain the defect that good augmented reality is experienced.
Embodiment two
It refer toFigure 4,Figure 4For the signal of second of implementation of near-eye display system provided in an embodiment of the present inventionFigure,As schemed 4Shown, image source 10 includes：
Light source 111, for providing original light；In the present embodiment, light source 111 is specifically as follows LASER Light Source, LED/light source etc., is not limited herein；
Scanning means 112, is arranged in the light path of original light, for original light to be entered into horizontal deflection, forms image light；In the present embodiment, scanning means 112 includes MEMS scanning galvanometers 1121, and in the present embodiment, MEMS scanning galvanometers can be made up of a two dimension MEMS scanning galvanometer, or 2 one-dimensional MEMS scanning galvanometers compositions.
Of course, it should be noted that, original light is the light after being modulated according to the virtual image for needing to be sent in eyes of user, after the output original light of light source 111, MEMS scanning galvanometers can enter horizontal deflection according to drive signal, namely the purpose of output image light is realized by scanning this process, so as to which virtual image is sent in dynamic eyes of user by image light.
Please continue to refer toFigure 4In the present embodiment, scanning means 112 also includes collimator apparatus 1122, and collimator apparatus 1122 is specifically as follows collimation lens, the light of the outgoing of MEMS scanning galvanometers 1121 is carried out collimation processing by collimation lens so that it can be entered in follow-up array image-forming device 20 in approximately parallel mode.
Array image-forming device 20 in the present embodiment is consistent with the content introduced in embodiment one, succinct for specification, just repeats no more herein.
As introduced in embodiment one, due to can the emergent pupil of imaging minute surface that is formed of anti-permeable membrane layer splice together, equivalent to the exit pupil diameter for expanding augmented reality equipment, so that the image light of augmented reality equipment output is more easily entered in the pupil of eyes, for example, no matter the eyes of user beAs schemed 4In position shown in 301, or the position shown in 302, or the position shown in 303, image light can enter in the pupil of eyes, so as to reduce or avoid the strict limitation to the position of eye-observation, and then the applicable crowd of augmented reality equipment is expanded, and interpupillary distance regulation is carried out to augmented reality equipment without user, user is it also avoid because regulation result inaccurately leads to not obtain the defect that good augmented reality is experienced.
Embodiment three
It refer toFigure 5,Figure 5For the signal of the third implementation of near-eye display system provided in an embodiment of the present inventionFigure,As schemed 5Shown, image source 10 includes：
Light source 121, for providing original light；In the present embodiment, light source 121 is specifically as follows LASER Light Source, LED/light source etc., is not limited herein；
Scanning means 122, is arranged in the light path of original light, for original light to be entered into horizontal deflection, forms image light；In the present embodiment, scanning means 122 specifically includes fibre-optic scanner 1221, fibre-optic scanner 1221 includes optical fiber and scan drive cell, scan drive cell is according to drive signal, optical fiber is both horizontally and vertically entered into horizontal deflection, the original light of light source output is processed as image light, so as to realize purpose virtual image being sent in eyes of user.
Please continue to refer toFigure 5In the present embodiment, scanning means 122 also includes collimation lens 1222, and collimation lens 1222 is used to the cone-shaped beam that fibre-optic scanner 1221 scans outgoing carrying out collimation processing so that it can be entered in follow-up array image-forming device 20 in approximately parallel mode.
Array image-forming device 20 in the present embodiment is consistent with the content introduced in embodiment one, succinct for specification, just repeats no more herein.
As introduced in embodiment one, due to can the emergent pupil of imaging minute surface that is formed of anti-permeable membrane layer splice together, equivalent to the exit pupil diameter for expanding augmented reality equipment, so that the image light of augmented reality equipment output is more easily entered in the pupil of eyes, for example, no matter the eyes of user beAs schemed 5In position shown in 301, or the position shown in 302, or the position shown in 303, image light can enter in the pupil of eyes, so as to reduce or avoid the strict limitation to the position of eye-observation, and then the applicable crowd of augmented reality equipment is expanded, and interpupillary distance regulation is carried out to augmented reality equipment without user, user is it also avoid because regulation result inaccurately leads to not obtain the defect that good augmented reality is experienced.
Example IV
It refer toFigure 6,Figure 6For the signal of the 4th kind of implementation of near-eye display system provided in an embodiment of the present inventionFigure,As schemed 6Shown, implementing for image source 10 in the present embodiment is consistent with the content introduced in embodiment two, succinct for specification herein, just repeats no more.
In other embodiments, image source 10 implements the scheme as introduced in embodiment one, embodiment three that can also use, and other schemes that the technical staff belonging to this area can use, is not limited herein.
Please continue to refer toFigure 6,As schemed 6It is shown, in the present embodiment, array image-forming device 20 includes leaded light device 211 and imaging mirror array 212, leaded light device 211 includes couple prism 2111 and planar light waveguide 2112, the imaging minute surface being imaged in mirror array 212 is diffraction minute surface, diffraction minute surface is arranged in the way of in face of human eye on leaded light device 211, in the present embodiment, the position of the planar light waveguide 2112 in leaded light device 211 above to human eye.
In specific implementation process, couple prism 2111 is used to adjust the image light of the output of image source 10 into the angle of planar light waveguide 2112 so that image light disclosure satisfy that in total reflection condition planar light waveguide 2112 and transmit.
In the present embodiment, it will be introduced so that the imaging lens mask body that is imaged in mirror array 212 is reflective diffraction minute surface as an example, please continue to refer toFigure 6,As schemed 6Shown, imaging mirror array 212 includes reflective diffraction minute surface 2121,2122 and 2123, and each reflective diffraction minute surface is arranged on the side away from human eye on planar light waveguide 2112, and specifically, reflective diffraction minute surface can be realized by the following two kinds mode：First：First make the corresponding structure of reflective diffraction minute surface, then the relevant position on side of the planar light waveguide 2112 away from human eye is fitted in by way of laminating, certainly, in this case, need to set corresponding coupled structure between reflective diffraction minute surface and planar light waveguide 2112, it is to avoid image light is propagated still in planar light waveguide 2112；Second, the relevant position of planar light waveguide 2112 is directly made as reflective diffraction mirror surface structure.
Pass through the introduction of the present embodiment, technical staff belonging to this area can be according to actual conditions, for multiple reflective diffraction minute surfaces in imaging mirror array 202, suitable parameter is set, such as the distance between grating constant, two neighboring reflective diffraction minute surface etc., the emergent pupil of multiple reflective diffraction minute surfaces is stitched together, further, the splicing view field of reflective diffraction minute surface is enabled to cover whole image source visual field, so as to realize the imaging of big visual field, just repeat no more herein.
Certainly, due to when image light passes through reflective diffraction minute surface 2121, a part for image light, which is assembled, to be imaged in front of human eye, another part is used as Zero-order diffractive light, continue to transmit along planar light waveguide 2112, when the Zero-order diffractive light passes through reflective diffraction minute surface 2122 and 2123 in subsequent optical path, occurs identical optical phenomena with comprehending, so the uniformity in order to ensure image light, the diffraction efficiency of each diffraction time in the diffraction structure of each reflective diffraction minute surface of reasonable design is needed, is just repeated no more herein.
Imaging mirror array 212 in the present embodiment is compared with the imaging mirror array 202 in embodiment one; without plated film; pass through the design of the diffraction structure to each reflective diffraction minute surface; the effect of light splitting can be realized; processing cost relative reduction; difficulty of processing is also reduced, it is easier to industrially realize scale.
When the imaging lens mask body in being imaged mirror array 212 is transmissive diffraction minute surface, each transmissive diffraction minute surface can be arranged on leaded light device close to the side of human eye on the planar light waveguide 2112 in leaded light device 211, namelyFigure 6The position relative with reflective diffraction minute surface on shown planar light waveguide 2112.Other settings for setting such as diffraction efficiency, neighbor distance or production method and reflective diffraction minute surface of transmissive diffraction minute surface similarly, are just repeated no more herein.
As can be seen that because the emergent pupil splicing of diffraction minute surface is together, equivalent to the exit pupil diameter for expanding augmented reality equipment so that the image light of augmented reality equipment output is more easily entered in the pupil of eyes, for example, no matter the eyes of user beAs schemed 6In position shown in 301, or the position shown in 302, or the position shown in 303, image light can enter in the pupil of eyes, so as to reduce or avoid the strict limitation to the position of eye-observation, and then the applicable crowd of augmented reality equipment is expanded, and interpupillary distance regulation is carried out to augmented reality equipment without user, user is it also avoid because regulation result inaccurately leads to not obtain the defect that good augmented reality is experienced.
One or more technical scheme in the embodiment of the present invention, at least has the following technical effect that or advantage：
Because array image-forming device includes at least two imaging minute surfaces, and the corresponding emergent pupil in all imaging lens faces is stitched together, equivalent to the exit pupil diameter for expanding augmented reality equipment, so that the image light of augmented reality equipment output is more easily entered in the pupil of eyes, so compared with the emergent pupil of single optical lens, the emergent pupil that this programme is provided is significantly increased, reduce or avoid the strict limitation to the position of eye-observation, and then expand the applicable crowd of augmented reality equipment, and interpupillary distance regulation is carried out to augmented reality equipment without user, user be it also avoid because regulation result inaccurately leads to not obtain the defect that good augmented reality is experienced.
All features disclosed in this specification, or disclosed all methods or during the step of, in addition to mutually exclusive feature and/or step, can combine in any way.
This specification (including any accessory claim, summary andAccompanying drawing) disclosed in any feature, unless specifically stated otherwise, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each feature is an example in a series of equivalent or similar characteristics.
The invention is not limited in foregoing embodiment.The present invention expands to any new feature disclosed in this manual or any new combination, and disclose any new method or process the step of or any new combination.
Claims (11)
1. a kind of near-eye display system, it is characterised in that described including image source and array image-forming device
Array image-forming device includes at least two imaging minute surfaces, and the corresponding emergent pupil in all imaging lens faces is stitched together；
The image light exported by described image source, human eye formation projection is reflexed to through the array image-forming device
Image；Ambient light is transmitted into human eye formation ambient image by the array image-forming device.
2. near-eye display system as claimed in claim 1, it is characterised in that the imaging minute surface presses institute
The transmission direction for stating image light is set gradually, and reflection efficiency strengthens successively.
3. near-eye display system as claimed in claim 1, it is characterised in that specifically wrap in described image source
Include：
Lighting source, for providing illuminating ray；
In reflective image source, the light path for being arranged on the illuminating ray, for the work in the illuminating ray
Described image light is sent under.
4. near-eye display system as claimed in claim 1, it is characterised in that specifically wrap in described image source
Include：
Light source, for providing original light；
In scanning means, the light path for being arranged on the original light, for the original light to be entered into horizontal deflection,
Form described image light.
5. near-eye display system as claimed in claim 4, it is characterised in that the scanning means is specific
For MEMS scanning galvanometers or fibre-optic scanner.
6. the near-eye display system as described in any claim in claim 1-5, it is characterised in that described
Imaging lens mask body is reflective diffraction minute surface or transmissive diffraction minute surface.
7. the near-eye display system as described in any claim in claim 1-5, it is characterised in that described
Array image-forming device includes：
Leaded light device, for guiding described image light；
Mirror array is imaged, is arranged in front of human eye, is made up of at least two imaging minute surfaces, in described image
When light is by the imaging minute surface, each imaging minute surface by a part for described image light to human eye side
To during reflection, described image light is transmitted in the also direction of propagation by described image light in the leaded light device
Another part in line.
8. near-eye display system as claimed in claim 7, it is characterised in that the leaded light device is specific
For planar light waveguide.
9. the near-eye display system as described in any claim in claim 7, it is characterised in that it is described into
As minute surface is specially diffraction minute surface, the diffraction minute surface is arranged at the leaded light device in the way of in face of human eye
On.
10. near-eye display system as claimed in claim 9, it is characterised in that the diffraction minute surface laminating
The diffactive lens is made as in the relevant position of the leaded light device, or by the relevant position of the leaded light device
Face structure.
11. near-eye display system as claimed in claim 7, it is characterised in that the imaging lens mask body
For can the minute surface that is formed of anti-permeable membrane layer, it is described can anti-permeable membrane layer reflecting surface towards the human eye.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257778.XA CN107305291A (en) | 2016-04-22 | 2016-04-22 | A kind of near-eye display system |
| PCT/CN2017/079940 WO2017181864A1 (en) | 2016-04-22 | 2017-04-10 | Near-eye display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257778.XA CN107305291A (en) | 2016-04-22 | 2016-04-22 | A kind of near-eye display system |
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| Publication Number | Publication Date |
|---|---|
| CN107305291A true CN107305291A (en) | 2017-10-31 |
Family
ID=60116546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610257778.XA Pending CN107305291A (en) | 2016-04-22 | 2016-04-22 | A kind of near-eye display system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107305291A (en) |
| WO (1) | WO2017181864A1 (en) |
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Application publication date: 20171031 |