CN209014828U - The LBS projecting light path aobvious for AR - Google Patents
The LBS projecting light path aobvious for AR Download PDFInfo
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- CN209014828U CN209014828U CN201822059716.5U CN201822059716U CN209014828U CN 209014828 U CN209014828 U CN 209014828U CN 201822059716 U CN201822059716 U CN 201822059716U CN 209014828 U CN209014828 U CN 209014828U
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Abstract
The utility model discloses, a kind of LBS projecting light path aobvious for AR, including light output part, light receiver, optical scanning module, extender lens component and lens subassembly is collected, light output part is used to two or more wavelength laser synthesizing same optical path, and emits synthesis light beam；Light receiver is used to receive the synthesis light beam of light output part transmitting；Light output part to the optical path between light receiver is provided with optical scanning module and has a reflection scanning surface, the synthesis light beam of light output part transmitting directive light receiver after reflection scanning surface reflection；Extender lens component is set to light output part into the optical path between optical scanning module；Collecting lens subassembly includes the first convergent lens and the first collimation lens.The utility model provides the LBS projecting light path aobvious for AR, can reduce the generation of hot spot, improve the viewing effect of user, promotes the wearing experience of user.
Description
Technical field
The utility model relates to wear field of display technology more particularly to a kind of LBS projecting light path aobvious for AR.
Background technique
Augmented reality (Augmented Reality abbreviation AR) is a kind of position for calculating video camera camera shooting in real time
Set and angle and plus respective image, video and 3D model technology.Realize that the helmet of augmented reality can have
A variety of optics display modes, wherein the augmented reality helmet of waveguide form has lightening and biggish development and promotion empty
Between, it is considered to be future realizes one of the mainstream of augmented reality.
The augmented reality helmet system of waveguide form generally comprises projection section and waveguide portion, and wherein projection section is current
The digital optical processing technique of DLP (Digital Light Procession) or LCOS (Liquid Crystal on are mostly used greatly
Silicon) the imaging modes such as reflection type liquid crystal shadow casting technique, wherein LBS (Laser Bean Scanning) is swept based on laser beam
The technology of retouching have the advantages that it is high-efficient, low in energy consumption, more conducively cooperation waveguide type enhancing complete helmet show, but LBS throwing
When the laser beam that shadow system generates is directly inputted into the coupling grating of Wave guide system, since laser itself has stronger be concerned with
Property, light beam easily interfere phenomenon, human eye are caused to see the hot spot of periodic distribution, and there are serious shadows as veiling glare for this hot spot
The viewing effect for ringing user reduces the wearing experience of user.
Utility model content
Based on this, when cooperating for current LBS projection display technique and guide technology, since the coherence of laser itself leads
Cause eye-observation arrive periodic distribution hot spot the problem of, it is necessary to provide it is a kind of for AR show LBS projecting light path, can subtract
The generation of few hot spot, improves the viewing effect of user, promotes the wearing experience of user.
To achieve the above object, the utility model proposes for AR show LBS projecting light paths, including,
Light output part for two or more wavelength laser to be synthesized same optical path, and emits synthesis light beam；
Light receiver, for receiving the synthesis light beam of the light output part transmitting；
Optical scanning module, the light output part to the optical path between the light receiver are provided with the optical scanning module,
And the optical scanning module has a reflection scanning surface, the synthesis light beam of the light output part transmitting is scanned through the reflection
Light receiver described in directive after the reflection of face, the optical scanning module is for scanning the synthesis light beam；
Extender lens component, the extender lens component are set to the light output part between the optical scanning module
In optical path；
Collecting lens subassembly, the lens subassembly that collects includes the first convergent lens and the first collimation lens, and described first
Convergent lens is set to the extender lens component into the optical path between the optical scanning module, and first collimation lens is set
The optical scanning module is placed in into the optical path between the light receiver.
Preferably, the extender lens component includes that second set gradually along the synthesis direction of beam propagation is assembled thoroughly
Mirror and the second collimation lens.
Preferably, the second convergent lens focal length is f1, and the second collimation lens focal length is f2, and f2 is greater than f1.
Preferably, the optical path distance between second convergent lens and second collimation lens is the sum of f1 and f2.
Preferably, the first convergent lens focal length is f3, and the first collimation lens focal length is f4, and f4 is less than f3.
Preferably, the optical path distance of first convergent lens and the reflection scanning surface of the optical scanning module is f3, institute
The optical path distance for stating the reflection scanning surface of the first collimation lens and the optical scanning module is f4.
Preferably, the first convergent lens focal length is f3, and the first collimation lens focal length is f4, and the ratio between f2 and f1
Greater than the ratio between f3 and f4.
Preferably, the light output part to the optical path between the optical scanning module is provided with reflection microscope group, to adjust
State synthesis direction of beam propagation.
Preferably, the reflection microscope group include the first reflecting mirror, the second reflecting mirror, third reflecting mirror, the 4th reflecting mirror and
5th reflecting mirror, the synthesis light beam of light output part transmitting successively through first reflecting mirror, second reflecting mirror,
Second convergent lens, the third reflecting mirror, second collimation lens, the 4th reflecting mirror, described first are assembled
Lens and the 5th reflecting mirror, the optical scanning module, first collimation lens and the light receiver.
Preferably, the light output part includes red laser, green (light) laser and blue laser, and will be described red
The Laser synthesizing mould of light beam is synthesized described in the Laser synthesizing of light laser, the green (light) laser and blue laser transmitting
Block, the optical scanning module are micro electromechanical scanning module, and the light receiver is waveguide coupling grating.
Preferably, the optical scanning module to the optical path between the light receiver is provided with modulation optical path.
The utility model proposes technical solution in, light output part transmitting synthesis light beam after optical scanning module scans
Directive light receiver wherein extender lens component and collects lens subassembly and is set in turn in light output part between light receiver
In optical path, by extender lens component expand effect and collect lens subassembly collect effect, the diameter expansion of light beam will be synthesized
Greatly, and again it reduces, changes the light path of each point of laser, that is, change the phase of laser, destroy the coherence of laser, reduce hot spot
It generates, while expanding the diameter of synthesis light beam, light energy can be dispersed, reduce the contrast of hot spot, hot spot is made to be not easy to send out
It is existing, improve the viewing effect of user, promotes the wearing experience of user.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is that the utility model is used for AR aobvious LBS projecting light path structural schematic diagrams.
Drawing reference numeral explanation:
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and cannot manage
Solution is its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.It is " more in the description of the present invention,
It is a " it is meant that at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. should do broad sense reason
Solution, for example, " fixation " may be a fixed connection, may be a detachable connection, or integral；It can be mechanical connection, it can also
To be electrical connection；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary
Or the interaction relationship of two elements, unless otherwise restricted clearly.It for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term in the present invention is understood as the case may be.
It in addition, the technical solution between each embodiment of the utility model can be combined with each other, but must be with ability
Based on domain those of ordinary skill can be realized, it will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of this technical solution is not present, also not within the protection scope of the requires of the utility model.
Referring to Fig. 1, the utility model proposes the LBS projecting light paths shown for AR, including light output part 100, light
Receiving unit 200, optical scanning module 300, extender lens component 410 and collect lens subassembly 420.
Light output part 100 is used to two or more wavelength laser synthesizing same optical path, and emits synthesis light beam
110；
Light receiver 200 is used to receive the synthesis light beam 110 of the transmitting of light output part 100；
Light output part 100 to the optical path between light receiver 200 is provided with optical scanning module 300, and optical scanning module 300
With a reflection scanning surface 310, the synthesis light beam 110 that light output part 100 emits directive light after reflection scanning surface 310 reflects is connect
Receipts portion 200, optical scanning module 300 convert optical signals into electric signal for scanning synthesis light beam 110；
Extender lens component 410, extender lens component 410 are set to light output part 100 between optical scanning module 300
In optical path；
Lens subassembly 420 is collected, lens subassembly 420 is collected and includes the first convergent lens 421 and the first collimation lens 422,
First convergent lens 421 is set to extender lens component 410 into the optical path between optical scanning module 300, the first collimation lens
422 are set to optical scanning module 300 into the optical path between light receiver 200.
Specifically, incident angle of the optical scanning module 300 when reflection synthesizes light beam 110 with synthesis light beam 110 constantly becomes
Change, to form different visual fields.
The utility model proposes technical solution in, light output part 100 emit synthesis light beam 110 pass through optical scanning module
Directive light receiver 200 after 300 scannings wherein extender lens component 410 and collects lens subassembly 420 and is set in turn in light output
Portion 100 acts on and collects lens subassembly 420 into the optical path between light receiver 200, through expanding for extender lens component 410
Collect effect, the enlarged-diameter of light beam 110 will be synthesized, and reduced again, change the light path of each point of laser, is i.e. change laser
Phase destroys the coherence of laser, reduces the generation of hot spot, while expanding the diameter of synthesis light beam 110, can be by light energy
Dispersion, reduces the contrast of hot spot, hot spot is made to be not easy to find, improve the viewing effect of user, promotes the wearing experience of user.
In addition, will synthesize directive after light beam 110 is assembled by the first convergent lens 421 reflects scanning surface 310, due to reflection
The general area of scanning surface 310 is smaller, guarantees that synthesis light beam 110 can be irradiated on reflection scanning surface 310 by assembling.
Extender lens component 410 includes the set gradually along synthesis 110 direction of propagation of light beam as a preferred method,
Two convergent lenses 411 and the second collimation lens 412 are expanded by the second convergent lens 411 and the second collimation lens 412 composition
Synthesis 110 ray diameter of light beam is expanded, changes the light path of each point, further destroys the coherence of laser by mirror assembly 410.
411 focal length of the second convergent lens is f1 as a preferred method, and 412 focal length of the second collimation lens is f2, and f2
Greater than f1, the second convergent lens 411 is greater than by the focal length of the second collimation lens 412, guarantees synthesis light beam 110 successively by the
The enlarged-diameter of light when two convergent lenses 411 and the second collimation lens 412 weakens the contrast between hot spot.
Further, the optical path distance between the second convergent lens 411 and the second collimation lens 412 be the sum of f1 and f2,
I.e. the distance between the second convergent lens 411 and the second collimation lens are the sum of the two focal length, and synthesis light beam 110 is assembled through second
Lens 411 assemble after through overfocus f1, concurrently scatter to the second collimation lens 412, the second collimation lens 412 away from focus f1 away from
From for f2, guaranteeing that synthesis 110 emergent light of light beam projects in parallel, the diameter for synthesizing light beam 110 is associated with f2 and f1, such as synthesizes
When the diameter of light beam 110 is expanded as through twice before the second convergent lens 411, then f2 ≈ 2f1.
421 focal length of the first convergent lens is f3 as a preferred method, and 422 focal length of the first collimation lens is f4, and f4
Less than f3, guaranteeing synthesis light beam 110, successively diameter becomes at diminution after the first convergent lens 421 and the first collimation lens 422
Gesture.
Further, the optical path distance of the first convergent lens 421 and the reflection scanning surface 310 of optical scanning module 300 is f3,
The optical path distance of first collimation lens 422 and the reflection scanning surface 310 of optical scanning module 300 is f4, and reflection scanning surface 310 is arranged
At the focus f3 of the first convergent lens 421, make to synthesize diameter minimum when light beam 110 is irradiated to reflection scanning surface 310, it can
Guarantee that reflection scanning surface 310 receives scanning to whole light, the first collimation lens 422 is f4 apart from reflection scanning surface 310, is protected
The light that card is reflected through reflection scanning surface 310 is by the first collimation lens 422 effectively collimation, the diameter of simultaneously synthesizing light beam 110
When collecting as half before 410 to the first convergent lens 421 of extender lens component, then f4 ≈ 0.5f3.
421 focal length of the first convergent lens is f3 as a preferred method, and 422 focal length of the first collimation lens is f4, and f2
It is greater than the ratio between f3 and f4 with the ratio between f1, after expanding and collecting, the beam diameter of synthesis light beam 110 is descending, passes through
The ratio between f2 and f1 are greater than the ratio between f3 and f4 and the synthesis light beam that synthesis 110 diameter of light beam after collecting is greater than before expanding have been effectively ensured
110 diameters reduce optical scanning module 300 volume of optical path and space later.
Light output part 100 to the optical path between optical scanning module 300 is provided with reflection microscope group as a preferred method,
(not indicating), AR it is aobvious in due to installation space it is limited, need to be used to adjust synthesis 110 side of propagation of light beam by reflection microscope group
To.
Further, reflection microscope group is anti-including the first reflecting mirror 610, the second reflecting mirror 620, third reflecting mirror the 630, the 4th
Mirror 640 and the 5th reflecting mirror 650 are penetrated, the synthesis light beam 110 that light output part 100 emits is successively anti-through the first reflecting mirror 610, second
Mirror 620, the second convergent lens 411, third reflecting mirror 630, the second collimation lens 412, the 4th reflecting mirror 640, first is penetrated to assemble
Lens 421 and the 5th reflecting mirror 650, optical scanning module 300, the first collimation lens 422 and light receiver 200, by this more
The secondary change light direction of propagation can make full use of AR aobvious inner spaces, in addition to this also can be according to design requirement
Position and the quantity of reflection microscope group are set.
Light output part 100 includes red laser 120, green (light) laser 130 and blue laser as a preferred method,
Device 140, and the laser that red laser 120, green (light) laser 130 and blue laser 140 emit is mixed into synthesis light
The Laser synthesizing module 150 of beam 110, optical scanning module 300 be micro electromechanical scanning module, micro electromechanical scanning module (MEMS,
Micro-Electro-Mechanical System) reflection synthesize light beam 110 when with synthesis light beam 110 incident angle not
Disconnected variation, to form different visual fields, light receiver 200 is waveguide coupling grating, and specifically, Laser synthesizing module 150 is towards red
Light laser 120 is provided with the first beam splitter (not indicating), and the feux rouges that red laser 120 emits is after the reflection of the first beam splitter
It projects；Photosynthesis module 150 is provided with the second beam splitter (not indicating) towards green (light) laser 130, and green (light) laser 130 emits
Green light after the reflection of the second beam splitter the first beam splitter of directive, and penetrate first beam splitter and mixed with feux rouges；Synthesize mould
Block 150 is provided with third beam splitter (not indicating) towards blue laser 140, and the blue light that blue laser 140 emits is through third
Directive successively penetrates the first beam splitter and the second beam splitter after beam splitter reflection, and mixes with feux rouges and green light.
Optical scanning module 300 to the optical path between light receiver 200 is provided with modulation optical path as a preferred method,
500, it generally is also easy to produce light distortion after 300 scanning reflection of optical scanning module, that is, optical path is modulated in the scalloping deformation shown
500 are used to eliminate the light distortion of light path system generation, improve personnel's viewing effect.
The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all
Under the inventive concept of the utility model, equivalent structure transformation made based on the specification and figures of the utility model, or
Directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (11)
1. a kind of LBS projecting light path aobvious for AR, which is characterized in that including,
Light output part for two or more wavelength laser to be synthesized same optical path, and emits synthesis light beam；
Light receiver, for receiving the synthesis light beam of the light output part transmitting；
Optical scanning module, the light output part to the optical path between the light receiver are provided with the optical scanning module, and institute
Optical scanning module is stated with a reflection scanning surface, the synthesis light beam of the light output part transmitting is anti-through the reflection scanning surface
Light receiver described in rear directive is penetrated, the optical scanning module is for scanning the synthesis light beam；
Extender lens component, the extender lens component are set to the light output part to the optical path between the optical scanning module
In；
Lens subassembly is collected, the lens subassembly that collects includes the first convergent lens and the first collimation lens, and described first assembles
Lens are set to the extender lens component into the optical path between the optical scanning module, and first collimation lens is set to
The optical scanning module is into the optical path between the light receiver.
2. the LBS projecting light path aobvious for AR as described in claim 1, which is characterized in that the extender lens component packet
Include the second convergent lens and the second collimation lens set gradually along the synthesis direction of beam propagation.
3. the LBS projecting light path aobvious for AR as claimed in claim 2, which is characterized in that second convergent lens is burnt
Away from for f1, the second collimation lens focal length is f2, and f2 is greater than f1.
4. the LBS projecting light paths aobvious for AR as claimed in claim 3, which is characterized in that second convergent lens with
Optical path distance between second collimation lens is the sum of f1 and f2.
5. the LBS projecting light path aobvious for AR as described in claim 1, which is characterized in that first convergent lens is burnt
Away from for f3, the first collimation lens focal length is f4, and f4 is less than f3.
6. the LBS projecting light paths aobvious for AR as claimed in claim 5, which is characterized in that first convergent lens with
The optical path distance of the reflection scanning surface of the optical scanning module is f3, first collimation lens and the optical scanning module it is anti-
The optical path distance for penetrating scanning surface is f4.
7. the LBS projecting light path aobvious for AR as claimed in claim 3, which is characterized in that first convergent lens is burnt
Away from for f3, the first collimation lens focal length is f4, and the ratio between f2 and f1 are greater than the ratio between f3 and f4.
8. the LBS projecting light paths shown as claimed in claim 2 for AR, which is characterized in that the light output part is to described
Optical path between optical scanning module is provided with reflection microscope group, to adjust the synthesis direction of beam propagation.
9. the LBS projecting light paths aobvious for AR as claimed in claim 8, which is characterized in that the reflection microscope group includes the
One reflecting mirror, the second reflecting mirror, third reflecting mirror, the 4th reflecting mirror and the 5th reflecting mirror, the light output part emit described
Synthesize light beam successively through first reflecting mirror, second reflecting mirror, second convergent lens, the third reflecting mirror,
Second collimation lens, the 4th reflecting mirror, first convergent lens and the 5th reflecting mirror, the optical scanning mould
Block, first collimation lens and the light receiver.
10. the LBS projecting light path aobvious for AR as described in claim 1, which is characterized in that the light output part includes red
Light laser, green (light) laser and blue laser, and by the red laser, the green (light) laser and the blue light
The Laser synthesizing module of light beam is synthesized described in the Laser synthesizing of laser transmitting, the optical scanning module is micro electromechanical scanning mould
Block, the light receiver are waveguide coupling grating.
11. the LBS projecting light path aobvious for AR as described in claim 1-10 is any, which is characterized in that the optical scanning
Module to the optical path between the light receiver is provided with modulation optical path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822059716.5U CN209014828U (en) | 2018-12-07 | 2018-12-07 | The LBS projecting light path aobvious for AR |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822059716.5U CN209014828U (en) | 2018-12-07 | 2018-12-07 | The LBS projecting light path aobvious for AR |
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| CN209014828U true CN209014828U (en) | 2019-06-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184753A1 (en) * | 2022-03-31 | 2023-10-05 | 歌尔光学科技有限公司 | Optical projection system and electronic device |
-
2018
- 2018-12-07 CN CN201822059716.5U patent/CN209014828U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184753A1 (en) * | 2022-03-31 | 2023-10-05 | 歌尔光学科技有限公司 | Optical projection system and electronic device |
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Effective date of registration: 20201023 Address after: 261031 north of Yuqing street, east of Dongming Road, high tech Zone, Weifang City, Shandong Province (Room 502, Geer electronic office building) Patentee after: GoerTek Optical Technology Co.,Ltd. Address before: 266104 Laoshan Qingdao District North House Street investment service center room, Room 308, Shandong Patentee before: GOERTEK TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |