CN105629478A - Visual optical imaging device and binocular near-eye display by using the same - Google Patents
Visual optical imaging device and binocular near-eye display by using the same Download PDFInfo
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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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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
- G02B2027/0134—Head-up displays characterised by optical features comprising binocular systems of stereoscopic type
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
Abstract
The present invention relates to a visual optical imaging device and an ultrathin optics transmission-type near-eye display by using the same. The near-eye display is formed by bilaterally symmetrically arranging two same visual optical imaging devices, each visual optical imaging device including one free-form surface waveguide component and one projection optics assembly; and the projection optics assemblies are used for projecting image signals emitted by an image source component to the light incident plane of the free-form surface waveguide component, the light ray is propagated in the free-form surface waveguide component to an exit pupil direction by means of a total reflection condition and enters users' glasses after being emitted from the exit surface when the total internal reflection condition is satisfied, and the light rat in the transmission direction is able to normally transmit to enter users' eyes, so that the ultrathin near-eye display is realized.
Description
Technical field
The present invention relates to a kind of visual optical imaging device and use its ultra thin optical transmission-type near-to-eye, especially, it relates to a kind of ultra-thin visual technique of display that free curved surface is combined with waveguide component.
Background technology
Consumption electronic product obtains flourishing development in recent years, after smart mobile phone, human consumer knows virtual reality (virtualreality) generally and strengthens the concept of reality (augmentedreality), and chases relevant various concept products as the trial experiencing new technology. In VR field, such as the company such as Samsung, Sony, Oculus, HTC has all made product, provides by smart mobile phone or the independent VR display unit used to human consumer; And in AR field, the product of the companies such as Google, Microsoft all also stops shows the stage in conceptual product development, commercially available limited amount. In these products above-mentioned, except the Hololens of Microsoft, mostly adopt the scheme of non-optical transmission-type, namely user isolates with real world in use, or only separately for single the eyes of user, visible angle can be caused little, have impact on the visual experience of user. Simultaneously, in order to pursue feeling of immersion, the existing VR product of major part is positioned at user's optical element at the moment all to be had bigger thickness and is closed near the eyes, Weighting system is even needed to carry out counterweight when wearing, increase the weight of the burden of user's head, the binocular near-eye display of frivolous optical transmission formula cannot have been realized.
In order to realize the nearly eye displaying scheme of ultra thin optical transmission-type, some designs introduce free curved surface prism element, the mode utilizing catadioptric light path to add compensating prism achieves optical transmission, but in view of free curved surface prism reaches the needs of curvature, when reaching good visual and experience, the thickness of the optical system of this kind of scheme can not be accomplished very frivolous, limits the lightening further of binocular near-eye display; Other design then uses planar optical waveguide scheme, utilizes the total internal reflection of light in slab guide element to effectively reduce the thickness of optical element, but slab guide element can not provide focal power, it is necessary to coordinate complicated optical projection system to use.
Summary of the invention
It is desirable to provide a kind of visual optical imaging device, and, by two identical visual optical symmetrical placements of imaging device, it is possible to realize ultra-thin optical transmission formula binocular near-eye indicating meter, applicable in the various application scenes of VR and AR.
A kind of visual optical imaging device according to the present invention, comprise: free curved surface waveguide component and Projection optics, wherein, Projection optics is used for projecting the image light signals that image source element sends the light entrance face of free curved surface waveguide component, and described light entrance face is plane; Described free curved surface waveguide component is formed by two portions gummed, and wherein first part comprises four optical surfaces, first and the 3rd optical surface be free curved surface, the 2nd and the 4th optical surface is the plane being parallel to each other, and with optical imaging device to go out pupil mutually parallel.
Concrete, the second section of described free curved surface waveguide component comprises three optical surfaces, wherein the 5th, six optical surfaces are the plane being parallel to each other and the plane being integrally formed extension after described two portions gummed with above-mentioned 2nd, the 4th optical surface, 7th optics is free curved surface, and the angle of the 7th optical surface and the 5th optical surface is greater than 22 �� and is less than 33 ��; 7th optical surface is cemented surface, uses after gluing together with the 3rd optical surface of first part.
In order to improve light utilization efficiency, described first optical surface is coated with reflective coating, and the 3rd optical surface is coated with reflective coating or half-reflection and half-transmission optical film.
Further, described first and three the angle of optical surface and the 4th optical surface be greater than 25 �� and be less than 38 ��;
Described visual optical imaging device go out interpupillary distance from reaching more than 15mm.
According to an embodiment of the present, described Projection optics comprises four optical lenses, is arranged in order on the optical axis direction advanced along light, and wherein first and third lens is non-spherical lens, and material is optical resin; Two, four lens are spherical lens, and material is opticglass. The optical axis of described Projection optics is vertical with the light entrance face of described free curved surface waveguide component; Or the light entrance face non-vertical of the optical axis of described Projection optics and described free curved surface waveguide component, and the vertical direction of the optical axis of described Projection optics and described light entrance face is in the pitch angle within about 20 degree.
The present invention also comprises a kind of nearly eye display unit with pair of right and left as above visual optical imaging device, and the image source element used can be LCD, OLED or LCOS type Micro display element. Preferably, Micro display element is dismountable.
Visual optical imaging device according to the present invention and ultra thin optical transmission-type binocular near-eye indicating meter, have frivolous optics structure, and visible angle is big, it is possible to realizes the nearly eye display of binocular solid; The mode that free curved surface waveguide component and projecting lens can adopt die casting shaping carry out producing in batches and tooling cost lower; As the display unit of optical transmission formula, observe the observation not affecting its real scene to external world while virtual scene; System goes out interpupillary distance from greatly, it is possible to settle vision correction lens with the demand of the user of wearing corrective lenses of satisfying the demand between free curved surface waveguide component and eyes of user; The distance that Projection optics and Micro display element and system go out between pupil position is suitable for being placed in the temple of glasses by Projection optics and Micro display element, it is to increase the wear comfort of nearly eye display equipment.
Accompanying drawing explanation
Fig. 1 is the visual optical imaging device index path for binocular near-eye indicating meter according to a first embodiment of the present invention
Fig. 2 is left side visual optical imaging device index path according to a first embodiment of the present invention
Fig. 3 be according to a first embodiment of the present invention in free curved surface waveguide component structure iron
Fig. 4 is the visual optical imaging device index path for binocular near-eye indicating meter according to a second embodiment of the present invention
Fig. 5 is the visual optical imaging device index path for binocular near-eye indicating meter according to a third embodiment of the present invention
Fig. 6 is the system chart after the electrical connection external device of the near-to-eye according to the present invention
Fig. 7 is the ultra thin optical transmission-type near-to-eye schematic diagram according to the present invention
Embodiment
Specific implementation of the present invention will be specifically described below with reference to the accompanying drawings, the present invention can realize with multiple different form and should not be construed as and be limited to following each enforcement mode, but, there is provided these embodiments to make the disclosure fully with complete, and pass on the design of the present invention to those skilled in the art comprehensively.
First embodiment
As Figure 1-3, the visual optical imaging device for binocular near-eye indicating meter according to a first embodiment of the present invention comprises left and right two cover visual optical imaging device, Fig. 1 has illustrated the index path of the binocular near-eye indicating meter of first embodiment of the invention, embody with the sectional view of described near-to-eye, owing to two cover visual optical imaging devices are symmetric about central shaft 1O, hereinafter, by taking the visual optical imaging device in left side as specifically describing object description specific embodiment of the invention scheme, it will be appreciated by those skilled in the art that, the visual optical imaging device on right side has the structure same with left side, just left and right reversion.
As described in Figure 2, the left side visual optical imaging device of first embodiment of the invention comprises free curved surface waveguide component 11L and Projection optics 12L, Micro display element 13L is placed in the thing side of Projection optics 12L, the image light sent by Micro display element 13L is successively through each lens 121L of Projection optics 12L, 122L, 123L, after 124L through the incident free curved surface waveguide component 11L inside of the face 1114L of free curved surface waveguide component 11L and be totally reflected on 1111L, light through 1111L reflect after meet light total internal reflection condition and waveguide component 11L between face 1114L and face 1112L total reflection thus complete transmission, until light incides the total internal reflection condition no longer meeting light on the 1113L of face after anti-raw reflection, go out to inject the eyes imaging of user from face 1114L. the environment light simultaneously entered from transmission direction aberrationless can directly enter eyes imaging after the face 1113L (or 1121L), 1113L and 1114L (or 1122L) transmission of free curved surface waveguide component, it is achieved the nearly eye display of optical transmission formula.
Concrete, as shown in Figure 3, free curved surface waveguide component 11L is by two portions 111L and 112L use glued together. First part 111L comprises four optical surfaces 1111L, 1112L, 1113L and 1114L, and wherein first and third optical surface 1111L and 1113L is free curved surface, and the 2nd, four optical surface 1112L and 1114L are plane. First and third optical surface 1111L and 1113L is coated with optical film, and wherein face 1111L is coated with reflective coating, and face 1113L is coated with half-reflection and half-transmission optical film, and face 1113L also can be coated with reflective coating to realize the application of VR class. Two, four optical surface 1112L and 1114L are parallel to each other, and with optical imaging device to go out pupil mutually parallel, the angle of first and third optical surface 1111L, 1113L and the 4th optical surface 1114L is greater than 25 �� and is less than 38 ��. 3rd optical surface 1113L is cemented surface, uses after gluing together with the 7th optical surface 1123L of second section 112L. Second section 112L comprises three optical surfaces 1121L, 1122L and 1123L, and wherein the 5th, six optical surface 1121L, 1122L are plane, and the 7th optics 1123L is free curved surface. Five, six optical surface 1121L and 1122L are parallel to each other, and the angle of the 7th optical surface 1123L and the 5th optical surface 1121L is greater than 22 �� and is less than 33 ��. 7th optical surface 1123L is cemented surface, uses after gluing together with the 3rd optical surface 1113L of first part 111L.
In the first embodiment, Projection optics 12L is made up of four optical mirror slips, and wherein the first, the 3rd lens 121L and 123L front and rear surfaces 1211L, 1212L and 1231L, 1232L are aspheric surface; Two, four lens 122L and 124L front and rear surfaces 1221L, 1222L and 1241L, 1242L are sphere. Lens containing aspheric surface and the free curved surface two-part material of waveguide component 11L are all optical resin, and the mode that die casting can be adopted shaping is produced in batches.
The Micro display element 13L as image source element in the present invention can the adaptive contour PPI Micro display element of LCD, OLED, LCOS, and such display element can exist as the installation of modularization, when the generation of display element realizes alternating, can realize changing by the display element of dismounting as modularization, thus the near-to-eye making the present invention can use most advanced high PPI display element all the time, it is achieved best vision effect. Micro display element 13L can adaptive OLED, LCOS, LCD etc., for the Micro display element of OLED class, owing to it belongs to the Micro display element from main light emission, therefore can directly be placed on object plane, and LCOS Micro display element belongs to non-autonomous luminescent micro display element, it is necessary to by PBS prism or PBS spectro-film. In the present embodiment, image planes position is mated mutually with the Image display position of OLED Micro display element, it is possible to be directly suitable for; The present embodiment can also adaptive LCOS Micro display element, after adding PBS prism, the Image display position of image planes position needs and LCOS Micro display element adjusts to some extent.
The visual optical imaging device on right side and left side are for being symmetrical arranged, and each optical element 11R-14R and 11L-14L is oppositely arranged, and has consistent effect. Left and right free curved surface waveguide component 11L, 11R just to the setting of people's eye, with optical system to go out pupil mutually parallel.
For the convenient needs manufacturing and installing, the each free curved surface waveguide component of the present invention also may comprise other surface, but usually do not possess the effect of optical transmission or reflection in view of this kind of surface and carried out such as grinding the process such as hair, do not discuss as the optical surface in the present invention at this.
It will be appreciated by those skilled in the art that, at optical element 11L and 11R in the face of eyes of user, it is possible to be coated with the protective film eliminating harmful light, to avoid the injury to human eyesight. During as optical transmission formula near-to-eye, light carries out regulating adapting to the user demand under difference scene through the reflectivity that reflectivity is coated with film system on 1113L and 1113R of face by regulating.
Each optical surface parameter according to a first embodiment of the present invention can be represented by following table 1-1, and table 1-2 is two XY polynomial free curved surface surface coefficients, and table 1-3 is four non-spherical surface coefficients:
Table 1-1
| Parameter | Face 1113L | Face 1111L |
| R | 83.32977671 | 39.27173711 |
| K | 0 | 0 |
| C10 | 0.0000E+00 | 0.0000E+00 |
| C01 | 0.00276936388 | 0.00440282022 |
| C20 | 0.00025808900 | -0.0744678536 |
| C11 | 0.0000E+00 | 0.0000E+00 |
| C02 | -0.00031729657 | -0.0002160335 |
| C30 | 0.0000E+00 | 0.0000E+00 |
| C21 | -4.051957438e-005 | -0.0023706414 |
| C12 | 0.0000E+00 | 0.0000E+00 |
| C03 | 1.0338598228e-005 | -1.30628048e-005 |
| C40 | 4.8903552421e-006 | -4.738576122 |
| C31 | 0.0000E+00 | 0.0000E+00 |
| C22 | 4.0895832451e-006 | -0.0001849847 |
| C13 | 0.0000E+00 | 0.0000E+00 |
| C04 | -5.988113261e-007 | -1.05384340e-006 |
Table 1-2
The XY polynomial free curved surface equation of the free curved surface of described description is:
Wherein R is the radius-of-curvature in each face, and x, y, z is the coordinate of point on curved surface, and K is the quadratic coefficients of curved surface, C(m,n)For corresponding polynomial expression item XmYnCoefficient.
| Parameter | Face 2232L | Face 2231L | Face 2212L | Face 2211L |
| R | -15.8523659 | -8.03834413 | 9.36948983 | 91.83300365 |
| K | 0 | 0 | 0 | 0 |
| A | 6.1944861e-006 | 3.0202941e-006 | -8.07925198e-006 | 1.167414481e-005 |
| B | 1.9931786e-006 | -2.6057485e-007 | -2.86341594e-007 | 3.509645578e-007 |
| C | 2.2871660e-007 | -2.9283357e-008 | -8.87275656e-009 | 1.016122554e-008 |
Table 1-3
Described non-spherical surface equation is:
Wherein R is the radius-of-curvature in each face, and h is the distance of the point on curved surface from optical axis, and K is the quadratic coefficients of curved surface, A, B, C ... for the high order aspheric surface coefficient of curved surface
2nd embodiment
Similar with the first embodiment, the second embodiment of the present invention as shown in Figure 4, also comprises two symmetrical cover visual optical imaging devices, is still described for left side below. Left side visual optical imaging device according to a second embodiment of the present invention comprises the thing side that free curved surface waveguide component 21L and Projection optics 22L, Micro display element 23L are placed in Projection optics 22L. It is inner and be incident on the 2111L of face and reflect that the image light signals sent by Micro display element 23L enters waveguide component through the face 2114L of free curved surface waveguide component 21L successively after each lens 221L, 222L, 223L, 224L of Projection optics 22L, light entered the total internal reflection condition meeting light after 2111L reflects and be totally reflected between face 2114L and face 2112L thus complete to transmit, until no longer meeting the total internal reflection condition of light after light is incident on the 2113L of face anti-raw reflection, go out to inject the eyes imaging of user at face 2114L. Environment light warp is the light of transmission direction simultaneously, after the face 2113L (or 2121L), 2113L and 2114L (or 2122L) transmission of free curved surface waveguide component, directly enter people's eye carry out aberrationless imaging, it is achieved the nearly eye display of optical transmission formula.
With the first embodiment the difference is that, it is eccentric to there is certain inclination in the Projection optics 22L (and corresponding Micro display element 23L) in the 2nd embodiment and free curved surface waveguide component 21L, the i.e. light incident surface 2114L non-vertical of the optical axis of Projection optics 22L and free curved surface waveguide component 21L, it can be in relative to pitch angle, vertical position and be less than 20 degree of scopes.
Each optical surface parameter according to a second embodiment of the present invention can be represented by following table 2-1, and table 2-2 is two XY polynomial free curved surface surface coefficients, and table 2-3 is four non-spherical surface coefficients:
Table 2-1
| Parameter | Face 2113L | Face 2111L |
| R | 79.756975 | 211.04223 |
| K | 0.0000E+00 | 0.0000E+00 |
| C10 | 0.0000E+00 | 0.0000E+00 |
| C01 | 0.001150953 | 0.055875073 |
| C20 | 0.00046609 | -0.735387283 |
| C11 | 0.0000E+00 | 0.0000E+00 |
| C02 | -0.000479994 | -0.001393034 |
| C30 | 0.0000E+00 | 0.0000E+00 |
| C21 | -3.91E-05 | -0.143355847 |
| C12 | 0.0000E+00 | 0.0000E+00 |
| C03 | -3.16E-06 | -0.00022476 |
| C40 | -9.85E-08 | -5.75E-02 |
| C31 | 0.0000E+00 | 0.0000E+00 |
| C22 | 3.38E-07 | 0.019705615 |
| C13 | 0.0000E+00 | 0.0000E+00 |
| C04 | -1.03E-06 | 9.31E-06 |
Table 2-2
| Parameter | Face 2232L | Face 2231L | Face 2212L | Face 2211L |
| R | 18.93574 | -32.86509 | -27.20327 | -9.739446 |
| K | 0 | 0 | 0 | 0 |
| A | -0.0002169054 | 0.00022421837 | -8.21707335e-007 | -1.28130870e-005 |
| B | -1.7976035e-006 | -1.7635031e-006 | -5.75237331e-007 | 6.794475404e-008 |
| C | 3.6160017e-009 | 1.2026919e-007 | -3.01764067e-008 | 1.32734647e-008 |
Table 2-3
3rd embodiment
Similar with first and second embodiment, the third embodiment of the present invention as shown in Figure 5, illustrates for left side, comprises the thing side that free curved surface waveguide component 31L and Projection optics 32L, Micro display element 33L are placed in Projection optics 32L. It is inner and be incident on the 3111L of face and reflect that the image light signals that Micro display element 33L sends enters waveguide component through the face 3114L of free curved surface waveguide component 31L successively after each lens 321L, 322L, 323L, 324L of Projection optics 32L, light entered the total internal reflection condition meeting light after 3111L reflects and had been totally reflected transmission between face 3114L and face 3112L, until no longer meeting the total internal reflection condition of light after light is incident on the 3113L of face anti-raw reflection, face 3114L goes out to inject eyes imaging. The light of transmission direction directly enters eyes imaging after the face 3113L (or 3121L), 3113L and 3114L (or 3122L) transmission of free curved surface waveguide component simultaneously, it is achieved the nearly eye display of optical transmission formula.
With the 2nd embodiment the difference is that, Micro display element 33L in the 3rd embodiment adopts the miniature display module of LCOS. LCOS micro display chip 333L is non-spontaneous light display device, extraneous offer is needed to throw light on, illumination light holds up the light that 331L sends, and to be radiated at LCOS display chip 333L on after the PBS light splitting surface 3322L of PBS prism 332L reflects be that it provides illumination, and the light that LCOS chip 333L sends normally shows after entering Projection optics 32L and free curved surface waveguide component 31L after the PBS light splitting surface 3322L transmission of PBS prism 332L. The same with first and second embodiment, the 3rd embodiment can also the adaptive miniature display chip of OLED, it is only necessary to image planes position is carried out appropriate adjustment.
Each optical surface parameter according to a third embodiment of the present invention can be represented by following table 3-1, and table 3-2 is two XY polynomial free curved surface surface coefficients, and table 3-3 is four non-spherical surface coefficients:
Table 3-1
| Parameter | Face 3113L | Face 3111L |
| R | 83.096106 | 44.340676 |
| K | 0 | 0 |
| C10 | 0.0000E+00 | 0.0000E+00 |
| C01 | 0.001283509770 | 0.0691526785 |
| C20 | 0.000466992757 | -0.75765737668 |
| C11 | 0.0000E+00 | 0.0000E+00 |
| C02 | -0.00048563044 | -0.0001231618 |
| C30 | 0.0000E+00 | 0.0000E+00 |
| C21 | -3.812202188e-005 | -0.1392280286 |
| C12 | 0.0000E+00 | 0.0000E+00 |
| C03 | -1.441677017e-005 | -0.0002172178 |
| C40 | 1.975437465e-008 | -0.3226534488 |
| C31 | 0.0000E+00 | 0.0000E+00 |
| C22 | 5.128982846e-007 | 0.01827871570 |
| C13 | 0.0000E+00 | 0.0000E+00 |
| C04 | -1.174839491e-006 | 2.04575351e-006 |
Table 3-2
| Parameter | Face 3232L | Face 3231L | Face 3212L | Face 3211L |
| R | 13.302271 | -86.10613 | -117.8553 | -10.59705 |
| K | 0 | 0 | 0 | 0 |
| A | -0.00021188616 | 0.0002113978236 | -0.000248163750 | -2.222489747e-005 |
| B | -1.9791387e-006 | -3.0079293e-006 | -8.54328052e-006 | -1.80171044e-006 |
| C | 9.6072442e-009 | 6.62613152e-008 | 2.15544291e-007 | -1.587600560e-007 |
Table 3-3
The the first to three embodiment according to the present invention, field of view angle, go out pupil diameter, the thickness D of the free curved surface waveguide component that goes out pupil Distance geometry can represent by table 4-1,
| First embodiment | 2nd embodiment | 3rd embodiment | |
| Field of view angle (level �� vertical) | 22��16.5�� | 22��16.5�� | 22��16.5�� |
| Go out pupil diameter | 10mm | 10mm | 10mm |
| Go out interpupillary distance from | 16mm | 16mm | 16mm |
| Thickness D | 8mm | 8mm | 8mm |
Table 4-1
Owing to the free curved surface waveguide component thickness D in the present invention can be effectively controlled within 8mm, thus achieve the binocular near-eye indicating meter of ultra-thin formula, and in view of effectively going out interpupillary distance from reaching more than 15mm, eyes are had to the user of dioptry, correcting lens 14L (24L, 34L) can be settled to meet service requirements between free curved surface waveguide component and eyes.
In above-mentioned the first to three embodiment of the present invention, Projection optics includes four optical lenses, is arranged in order on the optical axis direction advanced along light, it is preferable that, first and third lens is non-spherical lens, and material is optical resin; Two, four lens are spherical lens, it may also be useful to opticglass is made; And further, the surface, front and back two of described first and third lens is all aspheric surface. But the Projection optics of the present invention is not limited to this, it will be appreciated by those skilled in the art that, use other Projection optics structure formation being different from four optical lenses can also meet the needs of the present invention, such as, using the free curved surface prism of an equivalence as Projection optics, or use more multi-disc optical lens to realize less aberration.
The near-to-eye of the present invention is when specifically using, Micro display element is as image display device, its controller, image file memory, power supplies etc. all can be placed in external device, as shown in Figure 6, external device by being electrically connected to Micro display element, in order to Micro display element is powered and control on Micro display element image display.
Further, external device also can comprise user interface and communication interface, in order to receive user instruction and to communicate with other equipment. Under a kind of form, external device can be such as PC, panel computer, the universal calculating equipment such as smart mobile phone, and the display unit all used in the present invention of the various function and applications on it is shown. For smart mobile phone, it comprises such as general procedure device, comprises the storer of application and non-volatile memories, and treater can realize the application of communication and any quantity and be used as controller. Storer can comprise classes of semiconductors that is non-volatile and volatile memory and store device. User interface for operating can realize the function of user interface, and communication interface is wireless communication interface WIFI such as, bluetooth, NFC etc., and various known limited communication interface, can communicate with other equipment, receives the data information from other equipment.
Under another kind of form, external device can use the assemblies such as special controller and storer, to realize better display performance and to develop personalized function, such as various industrial application. Further, in view of the binocular near-eye indicating meter of the present invention utilizes two Micro display elements respectively as left and right image source element, can support that 3D shows.
Use two identical visual optical symmetrical placements of imaging device and realize ultra-thin optical transmission formula binocular near-eye indicating meter, its profile can glasses shape as shown in Figure 7, fixing for ease of installing, the free curved surface waveguide component of the left and right sides can form as one, middle part has the nose support portion of user's bridge of the nose, nose support portion can comprise soft material conventional in glasses, to improve wear comfort. Projection optics and Micro display element are then placed in the temple of glasses; make the brief easy protection of overall appearance; temple can adopt the width of gradual change; at the connection waveguide component side wider width to cover waveguide, then progressively reduce width until the suitable bending being worn on user ear.
The near-to-eye that visual optical imaging device according to the present invention realizes is based on free curved surface waveguide component, and one-piece construction is frivolous; When the near-to-eye of the present invention has the profile of glasses and be worn on user's head, both sides Projection optics and Micro display element can be placed on temple, making bridge of the nose place by power significantly to lower to wear, for realization has, design is felt, the product appearance of comfortable wearing provides favourable condition.
The above is only embodiments of the invention, not the structure of the present invention is done any restriction in form. Every any simple modification, equivalent variations and modification above embodiment done according to the technical spirit of the present invention, all still belongs in the scope of technical scheme of the present invention.
Claims (10)
1. a visual optical imaging device, comprising: free curved surface waveguide component and Projection optics, wherein,
Projection optics is used for projecting the image light signals that image source element sends the light entrance face of free curved surface waveguide component, and described light entrance face is plane;
Described free curved surface waveguide component is formed by two portions gummed, wherein first part comprises four optical surfaces (1111L, 1112L, 1113L and 1114L), first and the 3rd optical surface be free curved surface, 2nd and the 4th optical surface is the plane being parallel to each other, and with optical imaging device to go out pupil mutually parallel.
2. visual optical imaging device as claimed in claim 1, it is characterised in that,
The second section of described free curved surface waveguide component comprises three optical surfaces (1121L, 1122L and 1123L), wherein the 5th, six optical surfaces (1121L, 1122L) are the plane that is parallel to each other and the plane being integrally formed extension after described two portions gummed with above-mentioned 2nd, the 4th optical surface, 7th optics (1123L) is free curved surface, and the angle of the 7th optical surface and the 5th optical surface 1121L is greater than 22 �� and is less than 33 ��;
7th optical surface is cemented surface, uses after gluing together with the 3rd optical surface of first part.
3. visual optical imaging device as claimed in claim 2, it is characterised in that, described first optical surface is coated with reflective coating, and the 3rd optical surface is coated with reflective coating or half-reflection and half-transmission optical film.
4. as claimed in claim 2 or claim 3 visual optical imaging device, it is characterised in that, described first and three the angle of optical surface (1111L, 1113L) and the 4th optical surface (1114L) be greater than 25 �� and be less than 38 ��.
5. visual optical imaging device as claimed in claim 4, it is characterised in that, described visual optical imaging device go out interpupillary distance from reaching more than 15mm.
6. visual optical imaging device as claimed in claim 1, it is characterised in that described Projection optics comprises four optical lenses, is arranged in order on the optical axis direction advanced along light, and wherein first and third lens is non-spherical lens, and material is optical resin; Two, four lens are spherical lens, and material is opticglass.
7. visual optical imaging device as claimed in claim 6, it is characterised in that, the optical axis of described Projection optics is vertical with the light entrance face of described free curved surface waveguide component.
8. visual optical imaging device as claimed in claim 6, it is characterized in that, the optical axis of described Projection optics and the light entrance face non-vertical of described free curved surface waveguide component, and the vertical direction of the optical axis of described Projection optics and described light entrance face is in the pitch angle within about 20 degree.
9. one kind has pair of right and left as weighed the near-to-eye of the arbitrary visual optical imaging device of 1-8, it is characterised in that, image source element is LCD, OLED or LCOS type Micro display element.
10. near-to-eye as claimed in claim 1, it is characterised in that above-mentioned Micro display element is dismountable.
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