CN109491074A - Optics base station - Google Patents
Optics base station Download PDFInfo
- Publication number
- CN109491074A CN109491074A CN201810472934.3A CN201810472934A CN109491074A CN 109491074 A CN109491074 A CN 109491074A CN 201810472934 A CN201810472934 A CN 201810472934A CN 109491074 A CN109491074 A CN 109491074A
- Authority
- CN
- China
- Prior art keywords
- beamlet
- base station
- light beam
- mems mirror
- optics base
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
- G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
Abstract
The present invention discloses a kind of optics base station, including a pedestal, a light source and one first mems mirror.Light source is configured at pedestal, to provide a light beam.First mems mirror is configured in the optical path of light beam, to the reflected beams and light beam is made to carry out spacescan.
Description
Technical field
The present invention relates to a kind of base stations, and more particularly to a kind of optics base station.
Background technique
With scientific and technological progress, people pursue true to nature and just like the audio-visual enjoyment being personally on the scene, therefore virtual reality
(Virtual Reality, the VR) warm welcome of system by market.When user's wearing virtual reality device, can pass through
Virtual reality device watches 3 D stereoscopic image and obtains good ornamental experience.However, wanting the correct virtual reality of construction empty
Between, it is necessary to optics base station of arranging in pairs or groups provides sterically defined benchmark.
Fig. 1 is the schematic diagram of existing optics base station (optical base station).Fig. 1 is please referred to, in order to carry out
Two-dimensional spacescan, existing optical substrate 200 use two rotors 220A and 220B, and arrange in pairs or groups two light source 210A with
210B.The light beam L20A that light source 210A is provided understands the space that rotates and scan surrounding with rotor 220A after entering rotor 220A.Light
The light beam L20B that source 210B is provided can be rotated with rotor 220B and be swept with the direction different from light beam L20A after entering rotor 220B
Retouch the space of surrounding.However, because there are errors between the speed of rotor and the scan frequency of optics base station sets, and turn
The problem of having gravity and corresponding counterweight respectively when son rotation, and then jitter effect (jitter effect) is generated, and reduce
The scanning accuracy of existing optics base station.In addition, also leading to the volume of optical substrate 200 using two rotor 220A and 220B
It is difficult to reduce.
Summary of the invention
The present invention provides a kind of optics base station, can reduce jitter effect.
Optics base station of the invention includes a pedestal, a light source and one first mems mirror.Light source is configured at bottom
Seat, to provide a light beam.First mems mirror is configured in the optical path of light beam, to the reflected beams and carries out light beam
Spacescan.
In one embodiment of this invention, above-mentioned optics base station further includes a lens module, is configured at the optical path of light beam
On, wherein light beam is converted to by lens module with line style hot spot after the reflection of the first mems mirror.
In one embodiment of this invention, above-mentioned lens module includes a divergent lens and a cylindrical lenses piece.
In one embodiment of this invention, above-mentioned cylindrical lenses piece is towards the first mems mirror in inner sunken face
Shape.
In one embodiment of this invention, above-mentioned optics base station further includes a spectroscope and one second micro-electromechanical reflective
Mirror, wherein light beam by being split after spectroscope as one first beamlet and one second beamlet, match by the first mems mirror
It is placed in the optical path of the first beamlet, to reflect the first beamlet and the first beamlet is made to carry out spacescan, the second microcomputer
Galvanic reflex mirror is configured in the optical path of the second beamlet, is swept to reflect the second beamlet and the second beamlet is made to carry out space
It retouches.
In one embodiment of this invention, above-mentioned optics base station further includes one first lens module and one second lens mould
Block is respectively arranged in the optical path of the first beamlet and the second beamlet, wherein the first beamlet is by the first mems mirror
It is converted to line style hot spot, after the second beamlet is reflected by the second mems mirror after reflection by the first lens module
It is converted to by the second lens module with line style hot spot.
In one embodiment of this invention, the long axis of the line style hot spot of the first above-mentioned beamlet is perpendicular to the second beamlet
Line style hot spot long axis.
Based on above-mentioned, in optics base station of the invention, replace rotor using mems mirror, therefore optics base station has
Have lesser jitter effect, can improving optical scanning accuracy.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and it is attached appended by cooperation
Figure is described in detail below.
Detailed description of the invention
Fig. 1 is the schematic diagram of existing optics base station；
Fig. 2 is the schematic diagram of the optics base station of one embodiment of the invention；
Fig. 3 is the schematic diagram of the partial component of the optics base station of one embodiment of the invention；
Fig. 4 is the schematic diagram of the optics base station of another embodiment of the present invention；
Fig. 5 is the schematic diagram of the line style hot spot of Fig. 4；
Fig. 6 is the schematic diagram of the application architecture of the optics base station of Fig. 2.
Symbol description
200: optical substrate
210A, 210B: light source
220A, 220B: rotor
230: shell
L20A, L20B: light beam
100,300: optics base station
110: pedestal
120: light source
130: the first mems mirrors
140: lens module
142: divergent lens
144: cylindrical lenses piece
150: the cover
160: spectroscope
170: the second mems mirrors
L10: light beam
θ 10, θ 20: scanning angle
S10: accommodation space
140A: the first lens module
140B: the second lens module
12: the first scanning angle of θ
14: the second scanning angle of θ
F12: the first line style hot spot
F14: the second line style hot spot
AL12, AL14: long axis
L10A: the first beamlet
L10B: the second beamlet
D12, D14: moving direction
52: virtual reality device
54: hand handle
56: OPTICAL SENSORS
Specific embodiment
Fig. 2 is according to the schematic diagram of the optics base station of one embodiment of the invention, and Fig. 3 is according to one embodiment of the invention
Optics base station partial component schematic diagram.Referring to figure 2. and Fig. 3, the optics base station 100 of the present embodiment include a pedestal
110, a light source 120 and one first mems mirror 130.Light source 120 is configured at pedestal 110, to provide a light beam
L10.First mems mirror 130 is configured in the optical path of light beam L10, to the reflected beams L10 and light beam L10 is made to carry out sky
Between scan, e.g. make the hot spot of light beam L10 one scanning angle, θ 10 in move repeatedly.In the present embodiment, first is micro electronmechanical
Reflecting mirror 130 is the mems mirror of single-shaft-rotation, and in other embodiments, the first mems mirror 130 is also possible to
The mems mirror of multiaxis rotation, the present invention are not limited to this.In addition, the mirror surface foundation of the first mems mirror 130 needs
Asking can be made of the array of single lens or multiple eyeglasses.For the present embodiment, the mirror surface of the first mems mirror 130
It is made of single lens, the present invention is not limited to this.
In the optics base station 100 of the present embodiment, with the first mems mirror 130 instead of in the prior art turn
Son.First mems mirror 130 can be such that mirror surface swings using galvanomagnetic-effect.When to expose to first micro electronmechanical anti-by light beam L10
When penetrating mirror 130, with the swing of the first mems mirror 130, the light beam L10 reflected by the first mems mirror 130
It can swing, therefore the first mems mirror 130 can reach the effect for keeping light beam mobile identical with rotor.
The swing of first mems mirror 130 can accurately be controlled with control system, and the first mems mirror
Light-weight many of 130 weight compared to traditional rotor.Therefore, the optics base station 100 of the present embodiment will not be as existing
The scanning accuracy of optics base station 100 is influenced as technology because of jitter effect.The optics base station 100 of the present embodiment as a result,
Accurate optical scanner result can be provided.In addition, the volume of mems mirror is small compared to rotor, therefore optics base station
Inner space needed for 100 also reduces, and then can reduce whole volume and meet the use preference of consumer.
In the present embodiment, optics base station 100 can further include a cover 150, be configured at pedestal 110.Light source 120 and rotation
In the accommodation space S10 that platform 130 is located at the cover 150 and pedestal 110 is constituted.The cover 150 can make light source 120 and the first microcomputer
Galvanic reflex mirror 130 is isolated from the outside world, and avoids interference or pollution by foreign matter, with the reliability of improving optical base station 100 and prolongs
Long life.150 relative beam L10 of the cover is transparent.Furthermore, above-mentioned transparent to refer to that light beam L10
It is covered by the cover 150 and sends out the cover 150, and the luminous intensity of light beam L10 can't generally weaken.But human eye is different
It surely can be by seeing inside the cover 150 on the outside of the cover 150.In other words, whether eye-observation the cover 150, which is presented, transparent does not weigh
It wants, it is important that the material of the cover 150 passes through for the wave band of light beam L10 without hindering light beam L10 or obviously weakening light beam
The intensity of L10.In addition, the cover 150 of the present embodiment can be it is whole all transparent, can also be only in the optical path institute of light beam L10
The region of process is transparent.
In the present embodiment, optics base station 100 further includes a lens module 140, is configured in the optical path of light beam L10.Light
The hot spot of script is, for example, dotted after beam L10 is exported by light source 120, can use lens module 140 for the hot spot of light beam L10
It is converted to line style hot spot and optical scanner is carried out with benefit.There is light beam L10 line style hot spot to mean, light beam L10 beat at one and
The shape of hot spot is substantially in line style when in light beam L10 orthogonal plane.The lens module 140 of the present embodiment includes a divergent lens
142 and a cylindrical lenses piece (lenticular lens sheet) 144, but the present invention is not limited to this.Divergent lens 142 exists
It is round lens in the present embodiment.In other embodiments, because on divergent lens 142 really region can be passed through by light beam L10
It is strip, so divergent lens 142 is also possible to corresponding rectangular lens, and then reduces the volume of divergent lens 142.
Referring to FIG. 3, in the present embodiment, the scanning range of optics base station 100 is the first microcomputer that light beam L10 is swung
After galvanic reflex mirror 130 reflects, the optical path of light beam L10 passes through region.The first mems mirror 130 that light beam L10 is swung
Reflection, and as the first mems mirror 130 of swing reflexes to different positions.The mirror of first mems mirror 130
In order to further increase scanning range divergent lens can be arranged in the optical path of light beam L10 in the limited angle that face is swung
142.Divergent lens 142 can make scanning angle θ 10 increase to scanning angle θ 20, and scanning range is allowed to expand.Divergent lens 142
The optical path of light beam L10 can completely be covered passes through region.In other words, though light beam L10 by the first mems mirror 130 with
After unspecified angle reflection in scanning angle θ 10, incident divergent lens 142 and it can dissipate.
Light beam L10 incident cylindrical lenses piece 144 after the diverging of divergent lens 142.Cylindrical lenses piece 144 is mainly used for changing
The shape of darkening spot e.g. becomes line style hot spot from dotted hot spot.Pass through appropriately designed cylindrical lenses piece 144, Ke Yirang
There is roughly the same luminous intensity in everywhere of the light beam L10 on its line style hot spot.In the present embodiment, cylindrical lenses piece 144
It is in inner sunken face shape towards the first mems mirror 130, so that light beam L10 is by the first mems mirror 130 with random angle
Degree reflection after can vertical incidence cylindrical lenses piece 144, but the present invention it is not limited to this.
Fig. 4 is the schematic diagram according to the optics base station of another embodiment of the present invention.Referring to figure 4., the light of the present embodiment
Base station 300 is roughly the same with the optics base station 100 of Fig. 2, at the difference for only illustrating the two herein.The optics base station of the present embodiment
300 further include a spectroscope 160 and one second mems mirror 170.After light beam L10 enters spectroscope 160, be split and
The direction different from two exports one first beamlet L10A and one second beamlet L10B respectively.First mems mirror
130 and second mems mirror 170 be respectively arranged in the optical path of the first beamlet L10A and the second beamlet L10B, and
It is swung respectively with one first scanning angle θ 12 and one second scanning angle θ 14.First mems mirror 130 and second is micro-
Electromechanical mirror 170 is rotating around axially different rotation, therefore the first beamlet L10A and the second beamlet L10B after being reflected
Optical path can be swung on two mutually not parallel planes.Therefore, optics base station 300 can utilize the first beamlet L10A simultaneously
Optical scanner is carried out to arround in different directions with the second beamlet L10B, then the measurement for distance of arranging in pairs or groups, and then builds up sky
Between in object three-dimensional coordinate.
Fig. 5 is the schematic diagram of the line style hot spot of Fig. 4.Referring to Fig. 4 and Fig. 5, in the present embodiment, optics base station
300 can further include one first lens module 140A and one second lens module 140B, be respectively arranged at the first beamlet L10A with
In the optical path of second beamlet L10B.First beamlet L10A is converted to by the first lens module 140A with a First Line
Type hot spot F12, the second beamlet L10B are converted to by the second lens module 140B with one second line style hot spot F14.When
First line style hot spot F12 and the second line style hot spot F14 are projected to a metope, it will as shown in figure 5, the first line style hot spot F12
Major axis A L12 and the major axis A L14 of the second line style hot spot F14 are orthogonal.In addition, the first line style hot spot F12 and the second line style light
Spot F14 is moved, the first line style light as the first mems mirror 130 and the second mems mirror 170 are swung respectively
The moving direction D14 of the moving direction D12 of spot F12 and the second line style hot spot F14 are orthogonal, but invention is not limited thereto.
When the first mems mirror 130 and the second mems mirror 170 swing and make the first beamlet L10A with
When second beamlet L10B scans surrounding space simultaneously, the same optical receiver (not being painted) being positioned in the space can receive
One beamlet L10A and the second beamlet L10B.By the receiving time of the first beamlet L10A and the second beamlet L10B when
Between difference can converse optical receiver at a distance from optics base station 300, and the first beamlet L10A and the second beamlet L10B enters
Firing angle degree can then orient orientation of the optical receiver relative to optics base station 300, and then reach and determine optical receiver progress space
The purpose of position.The optics base station 300 of the present embodiment is as a result, with the first mems mirror 130 and the second mems mirror
170 replace two rotor 220A, 220B (being illustrated in Fig. 1) of the prior art that can carry out two-dimensional scanning to space, substantially save
The occupied space of element and material and assembling cost are saved.
Fig. 6 is the schematic diagram of the application architecture of the optics base station of Fig. 2.Fig. 6 is please referred to, has used two in this application architecture
The optics base station 100 of a Fig. 2.When user wears head-mounted display apparatus 52 and both hands respectively hold a control hand handle 54, light
With learning 100 durations of base station to space outgoing beam locating for user.Head-mounted display apparatus 52 and control hand handle 54
On have multiple OPTICAL SENSORSs 56, the OPTICAL SENSORS 56 on head-mounted display apparatus 52 is only indicated in Fig. 6.These OPTICAL SENSORSs
56 can detect the light beam that optics base station 100 is issued.The temporal information of light beam is detected by analyzing these OPTICAL SENSORSs 56
And geometric position of these OPTICAL SENSORSs 56 on head-mounted display apparatus 52 and control hand handle 54 can be obtained wear-type and show
The present position information of showing device 52 and control hand handle 54 in space, and then the application of the various virtual realitys of user is provided.
In conclusion the mems mirror of optics base station of the invention can be reached and identical with rotor keep light beam mobile
Effect.The rotor used compared to the prior art, the small many of the size of mems mirror, and number of parts it is few and can be with
Reduce control error caused by manufacturing tolerance and assembling tolerance.Therefore, optics base station of the invention is imitated with lesser bounce
The accuracy answered, therefore can scanned with improving optical.In addition, the rotor used compared to the prior art, the present invention uses microcomputer
Galvanic reflex mirror has lesser power consumption.When optics base station of the invention has built-in battery, optics base station of the invention is more
It is handy to carry about, and without circumscripted power line.
Although disclosing the present invention in conjunction with above embodiments, it is not intended to limit the invention, any affiliated technology
Have usually intellectual in field, without departing from the spirit and scope of the present invention, can make some changes and embellishment, therefore this hair
Bright protection scope should be subject to what the appended claims were defined.
Claims (7)
1. a kind of optics base station characterized by comprising
Pedestal；
Light source is configured at the pedestal, to provide light beam；And
First mems mirror, is configured in the optical path of the light beam, sweeps to reflect the light beam and the light beam is made to carry out space
It retouches.
2. optics base station as described in claim 1, further includes lens module, is configured in the optical path of the light beam, wherein the light
Beam is converted to by the lens module with line style hot spot after being reflected by first mems mirror.
3. optics base station as claimed in claim 2, wherein the lens module includes divergent lens and cylindrical lenses piece.
4. optics base station as claimed in claim 3, wherein the cylindrical lenses piece is towards first mems mirror in indent
Curved.
5. optics base station as described in claim 1 further includes spectroscope and the second mems mirror, wherein the light beam passes through
It is split after the spectroscope as the first beamlet and the second beamlet, which is configured at first beamlet
Optical path on, to reflect first beamlet and make first beamlet carry out spacescan, second mems mirror
It is configured in the optical path of second beamlet, to reflect second beamlet and second beamlet is made to carry out spacescan.
6. optics base station as claimed in claim 5, further includes the first lens module and the second lens module, is respectively arranged at this
In the optical path of first beamlet and second beamlet, wherein first beamlet is led to after first mems mirror reflection
It crosses first lens module and is converted to line style hot spot, which leads to after being reflected by second mems mirror
It crosses second lens module and is converted to line style hot spot.
7. optics base station as claimed in claim 6, wherein the long axis of the line style hot spot of first beamlet perpendicular to this second
The long axis of the line style hot spot of beamlet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762557091P | 2017-09-11 | 2017-09-11 | |
| US62/557,091 | 2017-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109491074A true CN109491074A (en) | 2019-03-19 |
Family
ID=65689272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810472934.3A Pending CN109491074A (en) | 2017-09-11 | 2018-05-17 | Optics base station |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109491074A (en) |
| TW (1) | TWI717604B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111692987A (en) * | 2019-03-15 | 2020-09-22 | 上海图漾信息科技有限公司 | Depth data measuring head, measuring device and measuring method |
| CN111829449A (en) * | 2019-04-23 | 2020-10-27 | 上海图漾信息科技有限公司 | Depth data measuring head, measuring device and measuring method |
| CN112019773A (en) * | 2019-05-13 | 2020-12-01 | 上海图漾信息科技有限公司 | Image sensor, depth data measuring head, measuring device and method |
| US11885613B2 (en) | 2019-03-15 | 2024-01-30 | Shanghai Percipio Technology Limited | Depth data measuring head, measurement device and measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111692987A (en) * | 2019-03-15 | 2020-09-22 | 上海图漾信息科技有限公司 | Depth data measuring head, measuring device and measuring method |
| US11885613B2 (en) | 2019-03-15 | 2024-01-30 | Shanghai Percipio Technology Limited | Depth data measuring head, measurement device and measuring method |
| CN111829449A (en) * | 2019-04-23 | 2020-10-27 | 上海图漾信息科技有限公司 | Depth data measuring head, measuring device and measuring method |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI717604B (en) | 2021-02-01 |
| TW201913181A (en) | 2019-04-01 |
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Application publication date: 20190319 |