CN106291934A - Light field display hologram image superposition optical system - Google Patents
Light field display hologram image superposition optical system Download PDFInfo
- Publication number
- CN106291934A CN106291934A CN201610830300.1A CN201610830300A CN106291934A CN 106291934 A CN106291934 A CN 106291934A CN 201610830300 A CN201610830300 A CN 201610830300A CN 106291934 A CN106291934 A CN 106291934A
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- CN
- China
- Prior art keywords
- light field
- signal
- eyeglass
- hologram image
- optical system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
- G02B2027/0174—Head mounted characterised by optical features holographic
Abstract
The present invention relates to light field eyeglass display field, light field display hologram image superposition optical system, including light field eyeglass, described light field eyeglass have a signal position injecting signal and with viewing visual angle directly to straight line look-out station, described in inject signal reflect in light field eyeglass and superposes with the impact of described look-out station formed hologram image.The present invention mainly provides a kind of light field display hologram image superposition optical system, purpose is while observer shows the picture signal that needs transmit the real scene that observer can be allowed to see the external world, and fusion real-time with extraneous scene for signal pattern is shown to observer.
Description
Technical field
The present invention relates to light field eyeglass display field, particularly to the light field eyeglass Display Technique in helmet-mounted display system.
Background technology
Traditional wear-type display system cannot be accomplished to show image and real-time the superposing of scene in extraneous visual field, this
Bright by light field eyeglass a kind of feasible line holographic projections mode of offer, and can solve the problem that signal pattern melts with the perfection of extraneous visual field
Close.
Summary of the invention
The present invention mainly provides a kind of light field display hologram image superposition optical system, it is therefore intended that show to observer
Observer can be allowed while needing the picture signal of transmission to see the real scene in the external world, and signal pattern and extraneous field
The real-time fusion of scape is shown to observer.
For solving the problems referred to above, the technical solution used in the present invention is:
Light field display hologram image superposition optical system, including light field eyeglass, described light field eyeglass has one and injects letter
Number signal position and with viewing visual angle directly to straight line look-out station, described in inject signal reflect in light field eyeglass and with
The superposition that affects of described look-out station forms hologram image.
In certain embodiments, in described light field eyeglass, there is grating.
In certain embodiments, described light field eyeglass both sides are respectively provided with surface coating so that described in inject signal in institute
The critical angle stating the total reflection of light field eyeglass reduces.
In certain embodiments, described light field eyeglass is made up of optical material, is used for transmitting signal light field, simultaneously to signal
Light field realizes cross directional stretch.
In certain embodiments, injecting signal described in is the picture signal shown to observer.
In certain embodiments, have with grating at conplane beam-splitter in described light field eyeglass, be used for increasing letter
The effect number of times of number light field and grating thus improve the output uniformity of the first light field eyeglass.
Use the invention has the beneficial effects as follows:
The present invention includes that light field eyeglass, described light field eyeglass have a signal position injecting signal and regard with viewing
Angle directly to straight line look-out station, described in inject signal and reflect in light field eyeglass and superpose shape with the impact of described look-out station
Become hologram image.Purpose is while observer shows the picture signal that needs transmit to allow observer see the external world
Real scene, and fusion real-time with extraneous scene for signal pattern is shown to observer.
Accompanying drawing explanation
The example of case study on implementation Yu prior art in order to better illustrate the present invention, below to case study on implementation or existing
Accompanying drawing required for the example of technology does briefly introduction.It will be apparent that some accompanying drawings mentioned in accompanying drawing are only the present invention
Some case study on implementation, from the point of view of those of ordinary skill in the art, on the premise of not paying creative work, Ke Yitong
Cross these accompanying drawings and obtain other accompanying drawings.
The simple principle that Fig. 1 front view angle signals amplifies illustrates.
Another simple principle that Fig. 2 front view angle signals amplifies illustrates.
Transmission signal in Fig. 3 front view visual angle superposes with outer visual field signal.
Fig. 4 front view visual angle plated film light field eyeglass reflection coefficient to flashlight and the relation of incident angle.
Fig. 5 is just attempting visual angle external world visual field signal and is arriving the principle of observer.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under not making creative work premise all its
His embodiment, broadly falls into the scope of protection of the invention.
It is to be appreciated that directional instruction in the embodiment of the present invention (such as up, down, left, right, before and after ...) is only used
In explaining relative position relation between each parts, motion conditions etc. under a certain particular pose (as shown in drawings), if should
When particular pose changes, then directionality instruction changes the most therewith.
It addition, in the present invention such as relating to the description of " first ", " second " etc. be only used for describe purpose, and it is not intended that
Indicate or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ",
The feature of " second " can express or implicitly include at least one this feature.
It addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel are capable of, when technical scheme combination occur conflicting maybe cannot realize time will be understood that this technical side
The combination of case does not exists, the most not within the protection domain of application claims.
The present invention is a kind of low energy consumption high evenness light field Display Technique
In FIG, signal generation apparatus 1 launches picture light field signal, as Figure 1-5, certain in signal light field 6
One single signal 2 is enlarged into signal light field 6 after the effect through surface optical element 5, and signal light field 6 is in the first light field
Propagating in eyeglass 3, the first light field eyeglass 113 comprises substrate 4 and the border 8,9 being parallel to each other, and optical boundary 8,9 meets flashlight
There are concussion the requirements propagated forward in field 6 in the optics cavity that substrate 4 and border 8,9 are formed.
So signal light field 6 just repeatedly can be propagated in substrate 4, and occurs repeatedly to act on signal grating 7, signal light
Grid 7 are an inefficient grating, and the signal light field 6 reaching its surface carries out part diffraction every time only, therefore can be just like
Repeatedly effect shown in figure occurs, and illustrates that another effect of grating 7 is exactly by the signal light field 6 incident angle to border 9
Change it is thus possible to make signal light field 6 leave the first light field eyeglass 11, as shown in 10a-10f in figure.
So, single signal light field 62 is being made with the first light field eyeglass 11 through surface optical element 5 and signal grating 7
Reformed into an exaggerated signal light field 10 (a-f) after with, as shown in FIG., signal light field 6 from icon 2 to icon 10
Only laterally it is being exaggerated.
When signal light field 6 10 spreads into the second light field eyeglass 11 from figure, and we can be appreciated that light field can be again with second
Second grating 12 is had an effect, and the second light field eyeglass 11 can make signal light field 6 concussion occur therein and propagate forward equally,
The two the second gratings 12 are also inefficient gratings, thus can again be formed between signal light field 10 and the second grating 12 repeatedly
Effect, and form 13a-13d multi-shot moulded signal, thus can longitudinally realize the stretching to signal light field 6.
Being briefly described by above, single signal light field 62 just can be amplified processing, finally by system by we
Left the second light field eyeglass 11 by the 3rd grating 14 effect in the second light field eyeglass 11 and form the signal graph to observer's transmission
As and be acquired.
Realize observer simultaneously view signal pattern and the principle of outside visual field of transmission as in figure 2 it is shown, be briefly described.
Observer 35 observes through the second light field eyeglass 11, has two different signals 10,31 in figure, and signal 10 is logical
Crossing the signal that light field eyeglass 11 transmits, signal 31 is the signal come by extraneous visual field, in order to make both arrive simultaneously
Reach observer 35, it would be desirable to ensureing that signal 31 can pass through light field eyeglass 11, the effect of the film plating layer 29 in figure can increase
External signal light 31 arrives the transmitance after light field eyeglass 11, makes signal 31 be not reflected by back, thus can enter the most smoothly
Enter light field eyeglass 11, arrive observer 35. through the second grating 14 together with signal 10
For improving the efficiency of transmission of light field eyeglass 11, reducing its cirtical angle of total reflection, we are at the table of light field eyeglass 11
Face plated film 28,29, and after plated film, occur the critical angle of total reflection to be reduced, i.e. (face more than a certain angle at incident angle
Angle, boundary) flashlight in time field lens sheet 11 reflected completely, the most also made right less than this angle time field lens sheet 11
The reflectance of light have decreased to 0 or is approximately 0, and this just makes external signal light also can arrive through light field eyeglass 11 smoothly
Observer 35.
Light occurs reflection to be that the medium surveyed due to critical surface two has different refractive indexs at critical surface, and makes critical surface
The optical signal of different angles there is different reflection coefficient, as Fig. 3 describes the relation of this reflection coefficient and incident angle.
When light field eyeglass 11 surface does not has plated film, reflection coefficient becomes big along with incident angle from zero degree and presents and first diminish
Become big trend again, and minimize when 30 degree, as shown in plated film curve non-in figure.And after having had film plating layer, I
Find, critical angle is reduced to 25 degree from 30 degree, and simultaneously when angle of incidence is less than 25 degree, reflection coefficient is 0 or essentially 0, and
When angle of incidence is more than 25 degree, reflection coefficient is 100, then the flashlight that angle is incident less than critical angle can be entirely unaffected by
Penetrating critical surface, be then totally reflected more than the incident ray of critical angle, surface coating 29 can make the letter of outer scene simultaneously
Number light 31 enters light field eyeglass 11 with the biggest percentage ratio, then less than the signal light in the angular range of critical angle just
Observer can be arrived through the another side of light field eyeglass 11.
Such as Fig. 4, it is the angular range of the critical angle less than light field eyeglass 11 in the range of a, b comprise, for observer
35 angles of visual field now, have external signal 60 and transmission signal 61 to propagate towards observer, and external signal 60 is through surface coating
The effect of layer 29, enters light field eyeglass 11 internal, is divided into the transmission of angle 62 Hes still in the range of a, b after arriving the second grating 14
Transmission of angle not in the range of a, b 52, and under the effect of film plating layer 28,62 can leave light field eyeglass 11 arrives observer
35,52 are reflected back toward light field eyeglass 11 has an effect with the second grating 14 again.Equally, signal 61 is also punished at the second grating 14
Becoming two parts light 63, light 51, only light 63 can leave light field eyeglass 11 in the range of a, b and reach observer 35, light
Line 51 is reflected back has an effect with the second grating 14 again.
In this way, it is achieved that external signal 60 and transmission signal 61 can observed person receive simultaneously, complete
The real-time superposition of inside and outside scene hologram image.
In certain embodiments, have in light field eyeglass 11 with signal grating 7 at conplane beam-splitter, be used for increasing
The effect number of times of signal light field 6 and signal grating 7 thus improve the output uniformity of the first light field eyeglass 11.
Claims (6)
- Light field the most according to claim 1 display hologram image superposition optical system, it is characterised in that: include light field lens Sheet, described light field eyeglass have a signal position injecting signal and with viewing visual angle directly to straight line look-out station, institute State inject signal reflect in light field eyeglass and superpose with the impact of described look-out station formation hologram image.
- Light field the most according to claim 1 display hologram image superposition optical system, it is characterised in that: described light field eyeglass Inside there is grating.
- Light field the most according to claim 1 display hologram image superposition optical system, it is characterised in that: described light field eyeglass Both sides are respectively provided with surface coating so that described in inject the critical angle that signal is totally reflected at described light field eyeglass and reduce.
- Light field the most according to claim 1 display hologram image superposition optical system, it is characterised in that: described light field eyeglass It is made up of optical material, is used for transmitting signal light field, signal light field is realized cross directional stretch simultaneously.
- Light field the most according to claim 1 display hologram image superposition optical system, it is characterised in that inject signal described in: For the picture signal shown to observer.
- Light field the most according to claim 1 display hologram image superposition optical system, it is characterised in that: described light field eyeglass Inside have with grating at conplane beam-splitter, be used for increasing signal light field and the effect number of times of grating thus improve the first light The output uniformity of field lens sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610830300.1A CN106291934A (en) | 2016-09-09 | 2016-09-09 | Light field display hologram image superposition optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610830300.1A CN106291934A (en) | 2016-09-09 | 2016-09-09 | Light field display hologram image superposition optical system |
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| Publication Number | Publication Date |
|---|---|
| CN106291934A true CN106291934A (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610830300.1A Pending CN106291934A (en) | 2016-09-09 | 2016-09-09 | Light field display hologram image superposition optical system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0527236A (en) * | 1991-07-23 | 1993-02-05 | Nec Corp | Back light for liquid crystal display |
| CN102928981A (en) * | 2012-11-14 | 2013-02-13 | 中航华东光电有限公司 | Optical system of holographic optical waveguide helmet display |
| CN103513424A (en) * | 2013-09-27 | 2014-01-15 | 上海理工大学 | Perspective display device |
| CN104536138A (en) * | 2015-01-25 | 2015-04-22 | 上海理湃光晶技术有限公司 | Planar waveguide binocular optical display device with saw-toothed sandwich structure |
| JP2015161737A (en) * | 2014-02-26 | 2015-09-07 | オリンパス株式会社 | Display method and display device |
-
2016
- 2016-09-09 CN CN201610830300.1A patent/CN106291934A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0527236A (en) * | 1991-07-23 | 1993-02-05 | Nec Corp | Back light for liquid crystal display |
| CN102928981A (en) * | 2012-11-14 | 2013-02-13 | 中航华东光电有限公司 | Optical system of holographic optical waveguide helmet display |
| CN103513424A (en) * | 2013-09-27 | 2014-01-15 | 上海理工大学 | Perspective display device |
| JP2015161737A (en) * | 2014-02-26 | 2015-09-07 | オリンパス株式会社 | Display method and display device |
| CN104536138A (en) * | 2015-01-25 | 2015-04-22 | 上海理湃光晶技术有限公司 | Planar waveguide binocular optical display device with saw-toothed sandwich structure |
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