CN207301489U - A kind of wearable optical system and device - Google Patents
A kind of wearable optical system and device Download PDFInfo
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- CN207301489U CN207301489U CN201720599902.0U CN201720599902U CN207301489U CN 207301489 U CN207301489 U CN 207301489U CN 201720599902 U CN201720599902 U CN 201720599902U CN 207301489 U CN207301489 U CN 207301489U
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Abstract
This application involves a kind of wearable optical system and device.The wearable optical system includes：Display unit, the display unit are configured to generation image information；And image combining unit, described image combining unit are configured to receive the light of the expression described image information from the display unit, the light is synthesized with extraneous scene via described image combining unit and watched for observer.The light of described image information is guided via lens subassembly, then the eyes of the observer are transmitted into by the amplification of the first free curved surface prism and the eyes for being reflected into the observer of the second free curved surface prism, the external world synthesis face of the scene through the first free curved surface prism and the second free curved surface prism.The wearable optical system prism thickness of the application is small, light-weight, compact-sized, and image quality is high.
Description
Technical field
This application involves optical projection Display Technique, relates more specifically to wearable optical projection system and device.
Background technology
The optical system that wearable device is light-weight, carrying comfort level and image quality are high is that current optical design is pursued
Target.Wearable projector equipment appears in military field earliest, can be with real-time display tactical information, and auxiliary mark, which aims at, to be known
Not, it may also be used for night vision system.With continuous progressive, the wearable projection of design concept, manufacture level and micro display technology
Equipment increasingly minimizes, and progresses into daily life.However, at present there is knot in wearable projection optical system
The problems such as structure is complicated, adjustment and processing request precision are high, volume weight is big, wearing can cause neck fatigue for a long time.
Therefore, this area needs improved wearable projection optical system.
The content of the invention
To achieve these goals, this application provides wearable optical projection system and device, to improve into image quality
Amount, and reduce volume, mitigate weight.
According to one embodiment of the application, there is provided a kind of wearable optical system, including：Display unit, it is described aobvious
The portion of showing is configured to generation image information；And image combining unit, described image combining unit are configured to receive from described aobvious
Show the light of the expression described image information in portion, the light is synthesized with extraneous scene via described image combining unit and seen for observer
See.
According to the one side of this Shen, the optical system further includes lens subassembly, and described image combining unit includes first
Free curved surface prism and the second free curved surface prism, the light of described image information are guided via the lens subassembly, then passed through
The amplification of first free curved surface prism and the eyes for being reflected into the observer of the second free curved surface prism, external world's scape
As the synthesis face through the first free curved surface prism and the second free curved surface prism is transmitted into the eyes of the observer.
According to the one side of this Shen, the lens subassembly includes the first non-spherical lens and the second non-spherical lens, the
One non-spherical lens and the second non-spherical lens are configured to the aberration that the first free curved surface prism enlarged drawing of correction produces.
According to the one side of this Shen, the first non-spherical lens is rectangle positive lens, the first face of the first non-spherical lens
It is sphere for aspherical, the second face；Second non-spherical lens is rectangle negative lens, and the first face of the second non-spherical lens is aspheric
Face, the second face are sphere；First free curved surface prism includes one or more free form surfaces；Second free curved surface prism includes inclining
Inclined-plane, the inclined plane are free form surface, the free form surface of the second free curved surface prism be coated with part reflective semitransparent film and with
One of free form surface is glued in first free curved surface prism forms the synthesis face.
According to the one side of this Shen, the display unit is Autoluminescence liquid crystal on silicon display element, and image planes edge is emitted
The scope of the angle theta of light and image planes normal is ± 10 °≤θ≤150 °.
According to the one side of this Shen, the first free curved surface prism is main function amplification prism, the first free curved surface prism
The image information amplification of display unit generation is adjusted to directional light into the eyes of the observer.
According to the one side of this Shen, the first free curved surface prism includes three free form surfaces, the first free curved surface prism
The face types of three free form surfaces be one of the following：Anamorphic aspherical surface, polynomial surface and double cubic surface.
According to the one side of this Shen, vertical direction maximum field of view top edge light and the first free curved surface prism and second
Incident angular dependence when the surface of free curved surface prism is intersected twice meets relationship below：
Wherein θ1Third time is sent from the display unit pass through first freely for vertical direction maximum field of view top edge light
Incidence angle during curved surface prism edge, θ2Pass through the second free form surface for vertical direction maximum field of view top edge light last time
Incidence angle during prism, n ' values are the refractive index of material.
According to the one side of this Shen, horizontal field of view angle and the vertical field of view tangent of an angle ratio of the observer are 16:9.
According to another embodiment of the application, there is provided a kind of wearable device, including：Processor, the processing
Device is configured to communicate so that image information is supplied to display unit with display unit；The display unit, the display unit are configured to
Show the image information from the processor；And image combining unit, described image combining unit, which is configured to receive, comes from institute
The light of the expression described image information of display unit is stated, the light synthesizes with extraneous scene via described image combining unit and supplies observer
Viewing.
According to the one side of the application, the wearable device further includes lens subassembly, described image combining unit bag
Include the first free curved surface prism and the second free curved surface prism, the light of the expression described image information from the display unit via
Lens subassembly guiding, is then reflected into institute by the amplification and the second free curved surface prism of the first free curved surface prism
State the eyes of observer, the external world synthesis face of the scene through the first free curved surface prism and the second free curved surface prism transmit into
Enter the eyes of the observer.
According to the one side of this Shen, the lens subassembly includes the first non-spherical lens and the second non-spherical lens, the
One non-spherical lens and the second non-spherical lens are configured to the aberration that the first free curved surface prism enlarged drawing of correction produces.
According to the one side of this Shen, the first non-spherical lens is rectangle positive lens, the first face of the first non-spherical lens
It is sphere for aspherical, the second face；Second non-spherical lens is rectangle negative lens, and the first face of the second non-spherical lens is aspheric
Face, the second face are sphere；First free curved surface prism includes one or more free form surface free form surfaces；Second free form surface rib
Mirror includes inclined plane, and the inclined plane is free form surface, and the free form surface of the second free curved surface prism is coated with half-reflection and half-transmission
Film and with one of free form surface in the first free curved surface prism is glued forms the synthesis face.
Conventional lenses formula structure is mostly the goggle structure of rotational symmetry, although optical property can simultaneously can close to diffraction limit
It is enough correcting distorted to a certain extent, but multiple lens is complicated, adjustment and processing request precision are high, volume weight
Very big, neck fatigue can be caused for a long time by wearing.Compared to conventional lenses formula or free form surface/refraction and diffraction hybrid structure, the application
The wearable optical projection system image quality provided is high, and simple in structure, small, light-weight, comfortable wearing.
The wearable optical projection technology of the application can be widely applied to amusement, analog simulation training, surgical operation etc.
The every field of virtual reality technology.
Brief description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of application, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other attached drawings according to these attached drawings.
Fig. 1 is the structure diagram according to the wearable optical system of the application one embodiment；
Fig. 2 is the part light path schematic diagram according to the wearable optical system of the application one embodiment；
Fig. 3 is the vertical axial aberration characteristic curve according to the wearable optical system of the application one embodiment；
Fig. 4 is the curvature of field and distortion performance curve according to the wearable optical system of the application one embodiment；
Fig. 5 is the modulation transfer function characteristic curve MTF according to the wearable optical system of the application one embodiment；
And
Fig. 6 is the exemplary computer system block diagram according to one embodiment of the application.
Embodiment
It will be described in detail with reference to the accompanying drawings various embodiments.In place of possible, same reference numerals will pass through attached drawing and be used to refer to
For same or like part.To particular example and realize that made reference is for explanatory purposes, and to be not intended to limit the application
Or the scope of claim.
Wording " exemplary " is used herein to mean that " be used as example, example or show ".Here depicted as " example
Property " any realization be not necessarily to be construed as preferred or advantageous over other realize.
The optical system of wearable projection display apparatus is an image enhancement system, image caused by micro-display
Amplify by optical system, before human eye at a certain distance from present one amplification the virtual image, user is immersed in void completely
It among the situation of plan, can also be combined with reality, form a kind of expansion reality scene.
This application provides a kind of wearable projection optical system of lightweight.As shown in Figure 1, wearable optical system
100 can include display unit 5, lens subassembly 110, image combining unit 120.Display unit 5 is configured to generation image information, citing
For, display unit 5 can be pixel, such as liquid crystal on silicon display element (Lcos).Image combining unit 120, which is configured to receive, to be come
From the light of the expression of display unit 5 image information, light is synthesized for observer via image combining unit 120 and extraneous scene 130
140 viewings.Lens subassembly 110 can include the first non-spherical lens 4 and the second non-spherical lens 3.Image combining unit 120 can be with
Including the first free curved surface prism 2 and the second free curved surface prism 1.The first surface 1a of wherein the second free curved surface prism 1 is
Free form surface, the remaining surface 11,12,13 for being the second free curved surface prism 1 is plane；Three of first free curved surface prism 2
Surface 2a, 2b, 2c are free form surface, and the remaining surface 21,22,23,24,25,26 of the first free curved surface prism 2 is all flat
Face.
Observation unit 140 includes the eyes of user, i.e. human eye or entrance pupil.Represent the light of image information via lens subassembly 110
Guide, then the amplification by the first free curved surface prism 2 and the eyes for being reflected into user of the second free curved surface prism 1,
Synthesis face of the extraneous scene 130 through the first free curved surface prism 2 and the second free curved surface prism 1 is transmitted into the eyes of user.
First non-spherical lens 4 and the second non-spherical lens 3 are configured to the picture that the first free curved surface prism enlarged drawing of correction produces
Difference.First free curved surface prism is main function amplification prism, and the first free curved surface prism puts the image information that display unit generates
Directional light is adjusted into the eyes of access customer greatly.
By thing side to human eye side, wearable optical system includes：Lcos5, the first non-spherical lens 4, second are aspherical
Lens 3, the first free curved surface prism 2, the second free curved surface prism 1.One face pixel (see Fig. 1) produces image, the light of image according to
The secondary aberration correction for passing through the first non-spherical lens and the second non-spherical lens, then by the amplification of the first free curved surface prism
It is as shown in Figure 2 with the entrance pupil the being reflected into i.e. human eye of the second free form surface, optical system light path figure.
The first free form surface 1a positioned at the first free curved surface prism is extraneous scene and virtual image synthesizes face, the plating of this face
There is a part reflective semitransparent film, enter human eye by this face after extraneous scene and virtual image synthesis.
In one embodiment, the face type of free curved surface prism 2 and 1 can be one kind in following three kinds of face types：Deform non-
Sphere, double-curved surface XY polynomial surfaces and double cubic surface.
A. anamorphic aspherical surface
In formula (1), CxIt is the radius of curvature of curved surface X-direction in X-Z plane, CyIt is curved surface Y side in Y-Z plane
To radius of curvature, KxIt is the whose conic coefficient of curved surface X-direction, KyIt is the whose conic coefficient of curved surface Y-direction, AiIt is 4,6,
8,10 ... 2n rank asphericity coefficients, on Z axis rotational symmetry, PiThe 2n rank rotation asymmetry coefficients that are 4,6,8,10 ....XYZ side
See Fig. 1 to expression (for vertical paper outward, Y-direction is up, Z-direction is to turn right to X-direction).Each parameter is in real number scope.
B. double-curved surface XY polynomial surfaces
The surface equation of double-curved surface XY polynomial surfaces (AXYP)：
Wherein, cx, cyIt is vertex curvature radius of the curved surface in meridian direction and sagitta of arc direction respectively, kx, kyIt is meridian respectively
With the quadratic surface coefficient in sagitta of arc direction, C(m,n)It is multinomial xmynCoefficient, p is polynomial highest exponential.Each parameter exists
Real number scope.
C. double cubic surface
Wherein,
The radius value of X-direction is set in the first parameter column.If set to 0, then the radius value in x directions is considered infinite
Greatly.The parameter definition of double cubic surface：First parameter Rx, the second ginseng Kx.Wherein, Kx is quadratic surface coefficient.Each parameter is real
Number scope.
In one embodiment, aspherical face type equation is：
Wherein, c is radius of curvature, and k is quadratic surface coefficient.Other parameters：First parameter alpha1, the second parameter alpha2, the 3rd ginseng
Number α3, the 4th parameter alpha4, the 5th parameter alpha5, the 6th parameter alpha6, the 7th parameter alpha7, the 8th parameter alpha8.Each parameter is real number scope.
As shown in Figure 1, vertical direction (Y-direction) maximum field of view's top edge light and the first free curved surface prism and second are certainly
Incident angular dependence when being intersected twice by the surface of curved surface prism meets relationship below：
Wherein θ1Sent for vertical direction maximum field of view top edge light from display unit by the first free curved surface prism side
Incidence angle during edge, θ2Pass through incidence angle during the second free curved surface prism, n ' for vertical direction maximum field of view top edge light
Being worth can be 1.4 to 1.6 for the refractive index of the second free curved surface prism material therefor, n ' value ranges.Second free form surface rib
The material of mirror can use the materials such as optical glass, optical plastic, optical resin..
For brevity, θ is shown in figure1For vertical direction maximum field of view top edge light the 5th warp is sent from display unit
Cross incidence angle during the first free curved surface prism edge.Alternatively, vertical direction maximum field of view top edge light is sent out from display unit
Go out incidence angle θ during the three, the 4th and the 5th process the first free curved surface prism edges1It is satisfied by above-mentioned relation formula.Together
Sample, for brevity, shows θ in figure2Pass through the second free form surface for vertical direction maximum field of view top edge light last time
Incidence angle during prism.Alternatively, vertical direction maximum field of view top edge light is for the first time and last time is free by second
Incidence angle θ during curved surface prism2It is satisfied by above-mentioned relation formula.
In one embodiment, the first free curved surface prism 2 and the second free curved surface prism 1 are glued, cemented surface for first from
By the first free form surface 2c of curved surface prism, part reflective semitransparent film is coated with the free form surface 1a of the second free curved surface prism.
In one embodiment, display unit can be Autoluminescence liquid crystal on silicon display element.As shown in Figure 1, image planes are emitted
Angle θ is the angle of image planes edge emergent ray and image planes normal, and the scope of θ is ± 10 °≤θ≤150 °.For example, image planes go out
Firing angle θ can be ± 5 ° or ± 10 °.Visual field is small when θ takes ± 5 °, and the illuminance of acquisition is high；Visual field is big when θ takes ± 10 °, obtains
Illuminance it is slightly lower.
In one embodiment, the scope that the horizontal field of view angle of the eyes of user is ω is in ± 10 °≤ω≤± 60 °, citing
For, ω (see Fig. 1) can take ± 7.5 °.The scope of the vertical field of view angle h of the eyes of user is in ± 6 °≤ω≤± 40 °, act
For example, h (vertical direction of ω) can take ± 6 °.Horizontal field of view angle is 16 with vertical field of view tangent of an angle ratio：9.
In one embodiment, the scope of the entrance pupil η (see Fig. 1) of the eyes of user for example, can enter in 3≤η≤8
Pupil η can be 5mm.The distance in human eye entrance pupil to the second free curved surface prism face 13 be into interpupillary distance l scopes in 15≤l≤20mm,
For example, it is 20mm to enter interpupillary distance l.The horizontal distance in thickness, that is, face 26 of the first free curved surface prism to face 25 is 5mm.Lcos
Pixel can be 640 × 480, effective dimensions can be 0.294 inch.
In one embodiment, the angle of second 1 two on-right angles of free curved surface prism for 30 ° and 150 ° (that is, 1a's and 11
Angle is 30 °, and the angle of 1a and 13 is 150 °).The angle of first free curved surface prism 24 and 25 is 120 °.Cemented prism is (i.e.,
The gluing of first free curved surface prism and the second free curved surface prism) the first parallel error be 3 ', the second parallel error be 5 '.
In one embodiment, lens subassembly 110 can be used as aberration correcting lens.It is aspherical that aberration correcting lens include two panels
Lens：First non-spherical lens 4 and the second non-spherical lens 3, wherein the first non-spherical lens 4 is positive lens, second is aspherical
Lens 3 are negative lens.
In one embodiment, the directional light that area source produces enters Lcos through PBS prism back reflection s light, by Lcos tune
The image of p light is emitted after system, is again introduced into after entering the first non-spherical lens 4 after PBS prisms and enters optical system.
In one embodiment, the total optical path length of human eye to the image planes of Lcos is less than 50mm.
In one embodiment, the face type tolerance PV values of non-spherical lens and prism are less than or equal to 1um, thickness deviation for ±
0.03mm, bias is ± 0.03mm, is tilted as ± 1 '.
In one embodiment, the first non-spherical lens, the second non-spherical lens, the first free curved surface prism, the second freedom
The thickness deviation of curved surface prism is less than or equal to ± 0.02mm, and inclination, eccentric tolerance are less than or equal to ± 0.02mm, and face type tolerance PV is small
In equal to 1 micron, the first parallel error is less than or equal to 3 ', and the second parallel error is less than or equal to 5 ', first free curved surface prism
Thickness is less than or equal to 5mm.
In one embodiment, optical system vertical axial aberration characteristic curve as shown in figure 3, place and distortion performance curve such as
Shown in Fig. 4, modulation transfer function is as shown in figure 5, Fig. 3,4,5 are all the evaluation method of the image quality of optical system.
The wearable projection optical system of lightweight of the application is simple and compact for structure, and lens group lens are few, prism thickness
It is small and small, light-weight, quality of optical imaging is high.
Compared with other wearable projection optical systems, from technical parameter for, the application because employ it is less go out
Pupil and less field angle are so as to obtain more frivolous optical texture.Because employing brand-new optical material so as to obtain more
Clearly image quality.Because employing the pixel of smaller brightness higher so as to obtain the clarity of higher.From principle
For, the application folding based on light different from the complicated fiber waveguide principle that some wearable projection optical systems use at present
Penetrate, reflect and be totally reflected, used more be easily understood, more essential optical principle.And the application employs uniqueness, off-axis
, nonaxisymmetrical three kinds of free-curved-surface-types are imaged while aberration correction with the aspherical mode being combined, be that the application is first
Wound.
It should be appreciated that above-described embodiment is only as an example, not a limit, those skilled in the art be further contemplated that it is more its
His similar approach realizes the combination of virtual image and extraneous scene.Such implementation should not be interpreted to cause departing from
Scope of the present application.
With reference to figure 6, a kind of exemplary computer system 600 is shown.Computer system 600 can include logical process
Device 602, such as perform core.Although illustrate a logic processor 602, in other embodiments, computer system 600
There can be multiple logic processors, for example, the multiple execution cores of each processor substrate, and/or multiple processor substrates, wherein
Each processor substrate can have multiple execution cores.As shown in the figure, various computer-readable recording mediums 610 can pass through one
Various system components are coupled to logic processor 602 by bar or multiple pieces of system bus interconnection, the system bus.System bus can
If be dry type bus structures in any types, including memory bus or Memory Controller, peripheral bus and
Use the local bus of any of various bus architectures.In the exemplary embodiment, it is computer-readable
Storage medium 610 can include such as random access memory (RAM) 604, storage device 606 (for example, electromechanical hard drives,
Solid-state hard drives etc.), firmware 608 (for example, quick flashing RAM or ROM) and removable memory device 618 be (such as CD-
ROM, floppy disk, DVD, flash drive, External memory equipment etc.).It will be appreciated by the person skilled in the art that it can use
Other types of computer-readable recording medium, such as cassette, flash card and/or digital video disc.Computer-readable storage
Medium 610 can provide the instruction 622 that computer can perform, data structure, program module and for computer system 600
Other data non-volatile and volatile storage.Basic input/output (BIOS) 620 --- it includes such as opening
The basic routine of the transinformation between the unit of computer system 600 is helped during dynamic --- firmware can be stored in
In 608.Substantial amounts of program can be stored in firmware 608, storage device 606, RAM 604 and/or removable memory device 618
On, and can be performed by logic processor 602, logic processor 602 includes operating system and/or application program.Order and letter
Breath can be received by input equipment 616 by computer system 600, input equipment 616 can include but is not limited to keyboard and
Sensing equipment.Other input equipments can include microphone, control stick, game paddle, scanner etc..These and other input
Equipment is connected to logic processor 602 often through the serial port interface for being coupled to system bus, but can also
Connected by other interfaces, such as parallel port, game port or Universal Serial Bus (USB).Display or other types
Display device system bus, such as video adapter can also be connected to via interface, it can be graphics processing unit 612
A part or be connected to graphics processing unit 612.Except display, computer typically comprises other periphery outputs and sets
It is standby, such as loudspeaker and printer (not shown).The exemplary system of Fig. 6 can also include host adapter, minicom
System interface (SCSI) bus and the External memory equipment for being connected to SCSI bus.Computer system 600 can use
Operated in the networked environment of the logical connection of one or more remote computers (such as, some remote computer).Remote computation
Machine can be other computer, server, router, network PC, peer device or other common network nodes, Yi Jidian
It can include multiple or all units in the unit above with respect to the description of computer system 600 type.When in LAN or WAN
In use, computer system 600 can be connected to LAN or WAN by network interface card 614 in networked environment.Network interface card (NIC)
614 (it can be internal or exterior) may be connected to system bus.In networked environment, relative to computer system
600 program modules described or their some parts can be stored in remote memory storage device.It will be appreciated that
Network connection described herein is exemplary, and can use the other means for establishing communication link between the computers.
In one or more exemplary embodiments, described function and process can hardware, software, firmware,
Or any combination thereof in realize.If realized in software, each function can be used as the instruction of one or more bars or code to deposit
Storage is transmitted on a computer-readable medium or by it.Computer-readable medium includes computer storage media and communication media
Both, it includes any medium for facilitating computer program to shift from one place to another.Storage medium can be calculated
Any usable medium that machine accesses.It is non-limiting as example, such computer-readable medium may include RAM, ROM,
EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage apparatus can be used to carrying or store instruction
Or desirable program code and any other medium that can be accessed by a computer of data structure form.For firmware and/or software
Realize, these methods can be realized with the module (for example, program, function etc.) for performing functions described herein.It is tangible
Any machine readable media that ground embodies instruction can be used for realizing method system described herein.For example, software code can
It is stored in the memory of the memory of such as movement station etc, and by such as desktop computer, laptop computer, service
The processors such as device computer, the microprocessor for moving equipment perform.Memory can be realized inside processor or outside processor
Portion.As it is used herein, term " memory " refer to any kind of long-term, short-term, volatibility, it is non-volatile or other
Memory, and it is not limited to the Jie of any certain types of memory or certain number of memory or memory storage on it
The type of matter.
Foregoing description and diagram are only provided as illustrated examples.Any of claim element of singulative is drawn
State, such as should not be construed as the element being defined to odd number using the citation of article " one ", " certain " or "the".Such as use herein
" first ", any reference of the title to depth of origin such as " second " do not limit the quantity or order of those elements usually.To the first He
The reference of second element is not meant to also not meaning that the first element must be in some way using only two elements herein
Before the second element.Unless otherwise stated, otherwise a set of pieces can include one or more elements.Technical staff is for every
Kind application-specific can realize described structure with different modes, but such implementation should not be interpreted to cause to take off
From scope of the present application.
It is to make any person skilled in the art all can make or use to provide being previously described for the disclosed embodiments
The application.The various modifications of these embodiments will be apparent for a person skilled in the art, and it is defined herein
General Principle can be applied to other embodiments without departing from spirit herein or scope.Thus, the application is not intended to
Embodiments shown herein is defined in, but should be awarded and appended claims and principle disclosed herein and novelty
The consistent broadest scope of feature.
Claims (8)
1. a kind of wearable optical system, including：
Display unit, the display unit are configured to generation image information；And
Image combining unit, described image combining unit are configured to receive the expression described image information from the display unit
Light, the light are synthesized with extraneous scene via described image combining unit and watched for observer；
The optical system further includes lens subassembly, and described image combining unit includes the first free curved surface prism and the second free song
Face prism, the light of described image information are guided via the lens subassembly, then by the first free curved surface prism amplification and
The eyes for being reflected into the observer of second free curved surface prism, external world's scene is through the first free curved surface prism and the
The synthesis face of two free curved surface prisms is transmitted into the eyes of the observer；The lens subassembly includes the first non-spherical lens
With the second non-spherical lens, the first non-spherical lens and the second non-spherical lens are configured to the first free curved surface prism of correction and put
The aberration that big image produces.
2. optical system according to claim 1, it is characterised in that：
First non-spherical lens is rectangle positive lens, and the first face of the first non-spherical lens is aspherical, the second face is sphere；
Second non-spherical lens is rectangle negative lens, and the first face of the second non-spherical lens is aspherical, the second face is sphere；
First free curved surface prism includes one or more free form surfaces；Second free curved surface prism includes inclined plane, described to incline
Inclined-plane is free form surface, the free form surface of the second free curved surface prism be coated with part reflective semitransparent film and with the first free form surface
One of free form surface is glued in prism forms the synthesis face.
3. optical system according to claim 1, it is characterised in that：The display unit shows for Autoluminescence liquid crystal on silicon
The scope of the angle theta of pixel, image planes edge emergent ray and image planes normal is ± 10 °≤θ≤150 °.
4. optical system according to claim 1, it is characterised in that：First free curved surface prism is main function amplification rib
The image information amplification that the display unit generates is adjusted to directional light into the observer's by mirror, the first free curved surface prism
Eyes.
5. optical system according to claim 2, it is characterised in that：First free curved surface prism includes three freely songs
Face, the face type of three free form surfaces of the first free curved surface prism are one of the following：Anamorphic aspherical surface, polynomial surface,
And double cubic surface.
6. optical system according to claim 3, it is characterised in that：Vertical direction maximum field of view top edge light and first
Incident angular dependence when the surface of free curved surface prism and the second free curved surface prism is intersected twice meets relationship below：
Wherein θ1Third time is sent from the display unit pass through the first free form surface rib for vertical direction maximum field of view top edge light
Incidence angle during mirror edge, θ2When passing through the second free curved surface prism for vertical direction maximum field of view top edge light last time
Incidence angle, n ' values be material refractive index.
7. optical system according to claim 1, it is characterised in that：The horizontal field of view angle of the observer and vertical field of view
Tangent of an angle ratio is 16:9.
8. a kind of wearable device, including：
Processor, the processor are configured to communicate so that image information is supplied to display unit with display unit；
The display unit, the display unit are display configured to the image information from the processor；And
Image combining unit, described image combining unit are configured to receive the expression described image information from the display unit
Light, the light are synthesized with extraneous scene via described image combining unit and watched for observer；
Wherein, the wearable device further includes lens subassembly, described image combining unit include the first free curved surface prism and
Second free curved surface prism, the light of the expression described image information from the display unit are guided via the lens subassembly, so
It is described afterwards by the amplification of the first free curved surface prism and the eyes for being reflected into the observer of the second free curved surface prism
Synthesis face of the extraneous scene through the first free curved surface prism and the second free curved surface prism is transmitted into the eyes of the observer.
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| CN201720599902.0U CN207301489U (en) | 2017-05-26 | 2017-05-26 | A kind of wearable optical system and device |
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| CN201720599902.0U CN207301489U (en) | 2017-05-26 | 2017-05-26 | A kind of wearable optical system and device |
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| CN201720599902.0U Active CN207301489U (en) | 2017-05-26 | 2017-05-26 | A kind of wearable optical system and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931850A (en) * | 2017-05-26 | 2018-12-04 | 上海真曦通信技术有限公司 | A kind of wearable optical system, device and method |
| CN109656025A (en) * | 2019-01-25 | 2019-04-19 | 杭州历历信息科技有限公司 | Projecting optical device of the augmented reality in conjunction with glasses |
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2017
- 2017-05-26 CN CN201720599902.0U patent/CN207301489U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931850A (en) * | 2017-05-26 | 2018-12-04 | 上海真曦通信技术有限公司 | A kind of wearable optical system, device and method |
| CN109656025A (en) * | 2019-01-25 | 2019-04-19 | 杭州历历信息科技有限公司 | Projecting optical device of the augmented reality in conjunction with glasses |
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