CN106154699A - Adjust refractive index formula laser beam deflection device and made laser projection - Google Patents
Adjust refractive index formula laser beam deflection device and made laser projection Download PDFInfo
- Publication number
- CN106154699A CN106154699A CN201410725259.2A CN201410725259A CN106154699A CN 106154699 A CN106154699 A CN 106154699A CN 201410725259 A CN201410725259 A CN 201410725259A CN 106154699 A CN106154699 A CN 106154699A
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- laser
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- refractive index
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- 230000006798 recombination Effects 0.000 claims description 12
- 238000005215 recombination Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/06—Fluid-filled or evacuated prisms
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- 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
- G02B26/0875—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 refracting elements
- G02B26/0883—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 refracting elements the refracting element being a prism
- G02B26/0891—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 refracting elements the refracting element being a prism forming an optical wedge
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
Adjust refractive index formula laser beam deflection device and made laser projection, belong to mechanical optics field.Current laser scanning TV, either all there is scan geometry problem on deformation in " multiple surface rotating mirror " or " galvanometer ", and laser spot track is not straight line, and along with the increase of laser beam deflection angle and more significantly deviation straight line；The impact of the image geometry distortion of distance projection is less, thus the laser television of short projector distance will be unable to overcome serious image geometry distortion；This technology uses adjusts refractive index 3 rib chamber mode to be completely eliminated geometric distortion, cancels high-speed component and precision components, and using the low frequency galvanometer of vertical scanning to be combined with the horizontal sweep parts as high frequency of the present invention is optimal cooperation.
Description
The invention belongs to mechanical optics field: be specifically a kind of to utilize the change of medium refraction index to deflect laser
The method of bundle, and with its manufactured laser television.
The state of the art at present:
Mostly laser television (LASER TV) is to utilize All-Solid working-laser material, produce red, green,
The continuous laser of blue three kinds of wavelength is as the light source of color laser TV, by television signal control tricolor laser
Scanogram.Its color domain coverage ratio can be up to more than the 90% of human eye gamut range in theory.This is than current LED
62% color domain coverage ratio that TV is the highest improves again a class.The raising of color domain coverage ratio, is possible not only to make
Whole TV image seems more true, have levels sense.
For being scanned for mode: use of laser television research carried out in the world at present is swept based on spot scan and line more
Retouch " single pixel point by point scanning realizes laser color video display technology " of two ways, due to this technological system
Cost is high, poor stability, it is difficult to realize the batch production of product, so progress is slow.Germany LDT
Company develops principle prototype at the beginning of 1998, and Sony Corporation of Japan developed demonstration model in 2002,
But fail industrialization so far.
Another key factor: either " multiple surface rotating mirror " or " galvanometer " all exist scan geometry deformation ask
Topic, laser spot track is not straight line, and deviates more from straight line along with the increase of laser beam deflection angle；Cause
And the laser television of short projector distance will be unable to overcome serious image geometry distortion.
The purpose of the present invention:
A scan deflection geometric distortion difficult problem in technical elements overcomes laser television, to short distance laser projection
Realization provides premise, it is possible to reduce volume.
The feature of the present invention:
It is i.e. the change by medium refraction index, the refraction angle of change laser beam, and the change of medium refraction index
Being to realize by the way of medium transfiguration, increasing dielectric structure thickness can increase deflection angle step by step.
In the gas container of centimeter scale (order of magnitude), the migration rate of gas is 100 meter per seconds (orders of magnitude),
The speed of piston is 10 meter per seconds (orders of magnitude)；Gas relaxation mistake can be completed completely in 1000 hertz of piston
Degree reaches to balance constantly.
The key problem in technology of the present invention:
Refractive index formula laser deflection device technique key point is adjusted to be:
For 3 prisms, when changing the refractive index of medium, the deflection angle of light will change, as
Fruit uses gas medium, and its density is easily changed, when selecting macromolecule and being prone to compress (such as freon)
Gas time；Change gas pressure and just change gas density, namely change gas density, it is possible to obtain
Variations in refractive index difference situation between 0.05 0.1, it is easy to obtain the deflection angle of 1-5 degree, polylith 3
Prism just can obtain greater angle.
This arrangement for deflecting key problem in technology is specified as: laser instrument (1) sends laser beam (2) and enters container (13)；
Container (13) is separated by oblique cavity wall (10) 2 Rhizoma Sparganii chamber structures: i.e. Rhizoma Sparganii chamber (6) and Rhizoma Sparganii chamber (7)；
The gas pressure of Rhizoma Sparganii chamber if (6) and Rhizoma Sparganii chamber (7) equal (also indicating that equal density under synthermal),
Now shoot laser bundle is non deflected laser beam (3), the former direction of basic holding.Linear electric motors (11) and straight line
Motor (12) drives piston (8) and piston (9) self-movement to change Rhizoma Sparganii chamber (6) and Rhizoma Sparganii respectively
The gas pressure in chamber (7), when differential mode is taked in the change of the gas in 2 Rhizoma Sparganii chambeies, just can obtain
Big deflection angle；Be exactly: the pressure in 1 Rhizoma Sparganii chamber when reaching maximum the pressure in another 1 Rhizoma Sparganii chamber reach
Minima, otherwise Yi Ran, thus during the continuous cyclically-varying of pressure in 2 Rhizoma Sparganii chambeies, sweeping of outgoing will be obtained
Retouch laser beam: turn laser beam (4) such as left avertence and right avertence turns laser beam (5).
Laser beam (2) is the laser beam of compound (containing R, G, B3 kind color).
R, G, B laser beam is different due to its refraction angle of difference of frequency, thus completely overlapped for forming 3
Consistent image, 3 image (2 at least within) convergences to be made process, the most slightly amplify R,
The image of G (red, green).Driver (see Fig. 2) is also needed to as constituted the driving of linear electric motors
The key problem in technology of its laser projection is: be containing multiple recombination lasers, such as laser instrument group (group scan):
(21), shown in, many groups recombination laser bundle (22) sent will each complete respective scanning area, so
Operating frequency and single scanning angle organizing laser beam can be reduced.2 sets sweep mechanism (25) and (26) such as figure
Shown in 1, actually used in, therein 1 will be along laser beam (not deflected that laser beam) rotation
It turn 90 degrees, and constitute vertical scanning laser deflection device (26) and horizontal sweep laser deflection device (25).
Laser-beam modulating device (23) drives each laser instrument to complete the modulation of video signal；Linear motor driver (24)
Each linear electric motors are driven to complete the piston movement shown in Fig. 1.
The low frequency galvanometer (or revolving many ribs tilting mirror) using vertical scanning is swept as the level of high frequency with apparatus of the present invention
Retouch being used in combination of parts, be optimal coordinated scheme, when galvanometer (or revolving many ribs tilting mirror) rotary shaft with enter
Penetrate the scanning plane of light substantially parallel time, the linearity of the light after projection is the best；Otherwise when galvanometer (or revolves many ribs
Tilting mirror) the scanning plane of rotary shaft and incident illumination substantially vertical time, the camber line degree of the light after projection is the biggest,
Thus it is inclined to avoid wide-angle deflection, laser beam bundle can solve to reduce the wide-angle of single recombination laser bundle as far as possible
Turn problem.
Key problem in technology can be summarized as:
* 3 rib chambeies differential: farthest save space.
The most multistage 3 rib chambeies: farthest strengthen the deflection angle of laser beam.
* the group scans organizing recombination laser bundles more: reduce to greatest extent required piston driving frequency (control
In 1000HZ).
* must carry out R, G, B to assemble: eliminate the impact of the refraction angle of R, G, B light beam.
Below in conjunction with accompanying drawing, with regard to present pre-ferred embodiments, the present invention will be further described:
Fig. 1 adjusts refractive index formula chamber laser deflection device schematic diagram
Fig. 2 is with adjusting refractive index formula laser deflection device scialyscope schematic diagram
Illustrate:
(1) the non deflected laser beam of laser instrument
(2) laser beam
(3) non deflected laser beam
(4) left avertence turns laser beam
(5) right avertence turns laser beam
(6) Rhizoma Sparganii chamber
(7) Rhizoma Sparganii chamber
(8) piston
(9) piston
(10) oblique cavity wall
(11) linear electric motors
(12) linear electric motors
(13) container
(21) laser instrument group
(22) laser beam
(23) laser-beam modulating device
(24) linear motor driver
(25) horizontal sweep laser deflection device
(26) vertical scanning laser deflection device
As shown in Figure 1:
Laser instrument (1) sends laser beam (2) and enters container (13)；Container (13) is by oblique cavity wall (10)
Separate and have 2 Rhizoma Sparganii chamber structures: i.e. Rhizoma Sparganii chamber (6) and Rhizoma Sparganii chamber (7)；Rhizoma Sparganii chamber if (6) and Rhizoma Sparganii
The gas pressure in chamber (7) is equal (also indicating that equal density under synthermal), and now shoot laser Shu Weiwei is inclined
Turn laser beam (3), the former direction of basic holding.When linear electric motors (11) and linear electric motors (12) drive respectively
Piston (8) and piston (9) self-movement change Rhizoma Sparganii chamber (6) and the gas pressure of Rhizoma Sparganii chamber (7),
When differential mode is taked in the change of the gas in 2 Rhizoma Sparganii chambeies, the deflection angle of maximum just can be obtained；It is exactly:
The pressure in 1 Rhizoma Sparganii chamber when reaching maximum the pressure in another 1 Rhizoma Sparganii chamber minimize value, otherwise Yi Ran, because of
And during the continuous cyclically-varying of pressure in 2 Rhizoma Sparganii chambeies, the scanning laser beam of outgoing will be obtained: as left avertence turns sharp
Light beam (4) and right avertence turn laser beam (5).
Laser beam (2) is the laser beam of compound (containing R, G, B3 kind color).
R, G, B laser beam is different due to its refraction angle of difference of frequency, thus completely overlapped for forming 3
Consistent image, 3 image (2 at least within) convergences to be made process, the most slightly amplify R,
The image of G (red, green).
Driver (see Fig. 2) is also needed to as constituted the driving of linear electric motors；Peak such as the driving of motor to be alleviated
Value power, can use elastic counter weighting mechanism, overcome the slot effect of similar motor.
As shown in Figure 2:
Practical laser scialyscope is containing multiple recombination lasers, such as laser instrument group: shown in (21), sent
Many groups recombination laser bundle (22) will each complete respective scanning area, so can reduce operating frequency and list
The scanning angle of group laser beam.
2 sets sweep mechanism (25) and (26) as it is shown in figure 1, in actual use, therein 1 will edge
Laser beam (that the most deflected laser beam) 90-degree rotation, and constitute vertical scanning laser deflection dress
Put (26) and horizontal sweep laser deflection device (25)；Sweep mechanism (26) in figure is exactly to rotate 90
Degree is placed, and is in the convenient understanding to structure, drawn not rotating in figure, but practical situation be through
90-degree rotation.
Laser-beam modulating device (23) drives each laser instrument to complete the modulation of video signal；Linear motor driver
(24) each linear electric motors are driven to complete the piston movement shown in Fig. 1.
Claims (2)
1. adjust refractive index formula laser beam deflection device；Three mainly separated by laser instrument, container, oblique cavity wall
Rib chamber, transfiguration moving component etc. form, and basic functional principle is: laser instrument (1) sends laser beam (2) and enters
Enter container (13)；Container (13) is separated by oblique cavity wall (10) 2 Rhizoma Sparganii chamber structures: i.e. Rhizoma Sparganii chamber (6)
And Rhizoma Sparganii chamber (7)；If the gas pressure of Rhizoma Sparganii chamber (6) and Rhizoma Sparganii chamber (7) is equal, under synthermal also
Showing equal density, now shoot laser bundle is non deflected laser beam (3), the former direction of basic holding；Straight-line electric
Machine (11) and linear electric motors (12) drive piston (8) and piston (9) self-movement to change Rhizoma Sparganii respectively
Chamber (6) and the gas pressure of Rhizoma Sparganii chamber (7), when differential mode is taked in the change of the gas in 2 Rhizoma Sparganii chambeies,
Just can obtain the deflection angle of maximum；Namely: the pressure in 1 Rhizoma Sparganii chamber reaches another 1 Rhizoma Sparganii during maximum
The pressure in chamber minimizes value, on the contrary Yi Ran, thus during the continuous cyclically-varying of pressure in 2 Rhizoma Sparganii chambeies, will
Obtain the scanning laser beam of outgoing: turn laser beam (4) such as left avertence and right avertence turns laser beam (5)；Laser beam (2)
It is compound, containing the laser beam of R, G, B3 kind color；R, G, B laser beam is due to its refraction of difference of frequency
Angle is different, thus for forming 3 completely overlapped consistent images, in 3 images at least within 2 want
Make convergence to process, the most slightly amplify the image of R, G；On the other hand: 3 rib chambeies can differentialization,
Farthest save space；3 rib chambeies can also can use in multipolarity in single use, come farthest by
Level strengthens the deflection angle of laser beam；Many groupizations of recombination laser bundle, it is required right to reduce to greatest extent
The driving frequency of transfiguration parts；R, G, B convergence must be carried out process, to eliminate the refraction of R, G, B light beam
The impact of angle；Its feature is that the 3 rib cavity configurations being machined with in a reservoir for storing gaseous matter；
The change of the volume in 3 rib chambeies is to be realized by the displacement of transfiguration moving component；Completely overlapped unanimously for formation 3
Image, 2 convergences to be made at least within 3 images process；The laser instrument used is that single group is compound
Laser can also be many group recombination laser groups.
2. adjust refractive index formula laser beam deflection formula laser projection；Mainly by recombination laser: i.e. laser instrument group
(21), 2 sets sweep mechanism (25) and (26), laser-beam modulating device (23), linear motor driver (24)
Deng composition；Sent by: the laser instrument group (21) containing multiple recombination lasers many groups of its operation principle are multiple
Close laser beam (22) and will each complete respective scanning area, so can reduce operating frequency and single group laser
The scanning angle of bundle.In 2 sets sweep mechanism (25) and (26) 1 to be that rotating shaft rotates along laser beam
90 degree, and constitute 1 set vertical scanning laser deflection device (26) and horizontal sweep laser deflection device (25)；
Laser-beam modulating device (23) drives each laser instrument to complete the modulation of video signal, linear motor driver (24)
Each linear electric motors are driven to complete the piston movement shown in Fig. 1；Its feature is that in this laser projection
Employ tune refractive index formula laser beam deflection device；The laser instrument group used can be i.e. single recombination laser
Device can also be multiple recombination laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410725259.2A CN106154699B (en) | 2015-05-16 | 2015-05-16 | Refractive index-adjustable laser beam deflection device and laser projector manufactured by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410725259.2A CN106154699B (en) | 2015-05-16 | 2015-05-16 | Refractive index-adjustable laser beam deflection device and laser projector manufactured by same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106154699A true CN106154699A (en) | 2016-11-23 |
| CN106154699B CN106154699B (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410725259.2A Active CN106154699B (en) | 2015-05-16 | 2015-05-16 | Refractive index-adjustable laser beam deflection device and laser projector manufactured by same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799605A (en) * | 2017-11-16 | 2019-05-24 | 福州高意通讯有限公司 | A kind of optical texture and application |
| WO2021184925A1 (en) * | 2020-03-19 | 2021-09-23 | 深圳光峰科技股份有限公司 | Projection system |
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| CN101178487A (en) * | 2006-11-10 | 2008-05-14 | 精工爱普生株式会社 | Electro optic device, method of manufacturing electro optic device, and scanning type optical apparatus |
| US20140054067A1 (en) * | 2012-08-21 | 2014-02-27 | Jason C. Heikenfeld | Pressure reconfigured electromagnetic devices |
-
2015
- 2015-05-16 CN CN201410725259.2A patent/CN106154699B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1038408A (en) * | 1962-07-09 | 1966-08-10 | Westinghouse Electriic Corp | Improvements in or relating to communications system |
| EP0273568A1 (en) * | 1986-11-20 | 1988-07-06 | Xerox Corporation | Gas zoom lens assembly |
| US5221987A (en) * | 1992-04-10 | 1993-06-22 | Laughlin Richard H | FTIR modulator |
| CN1124512C (en) * | 1998-08-24 | 2003-10-15 | 物理光学公司 | Beam deflector and scanner |
| JP2002267950A (en) * | 2001-03-08 | 2002-09-18 | Sumitomo Electric Ind Ltd | Optical device |
| CN1417617A (en) * | 2001-11-01 | 2003-05-14 | 鸿富锦精密工业（深圳）有限公司 | Intelligent film filter |
| JP2003232941A (en) * | 2002-02-07 | 2003-08-22 | Matsushita Electric Ind Co Ltd | Optical waveguide and method of manufacturing the same |
| JP2003262801A (en) * | 2002-03-08 | 2003-09-19 | Japan Science & Technology Corp | Optical fiber type optical component |
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| CN1914521A (en) * | 2004-01-30 | 2007-02-14 | 皇家飞利浦电子股份有限公司 | Variable focus lens package having clamping means for fixing the various lens package elements with respect to each other |
| CN1747121A (en) * | 2005-09-06 | 2006-03-15 | 北京爱华新业照明器材有限公司 | Ultrahigh mercury light and projection light with this light as wick |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799605A (en) * | 2017-11-16 | 2019-05-24 | 福州高意通讯有限公司 | A kind of optical texture and application |
| WO2021184925A1 (en) * | 2020-03-19 | 2021-09-23 | 深圳光峰科技股份有限公司 | Projection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106154699B (en) | 2020-12-11 |
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Effective date of registration: 20200818 Address after: 1 / F, Jiatai pharmaceutical, Tangwei No.1 Industrial Zone, Fengtang Avenue, Tangwei community, Fuhai street, Shenzhen City, Guangdong Province Applicant after: Shenzhen Weichuang Technology Development Co., Ltd Address before: 161006 Tiefeng District of Qigihar city in Heilongjiang Province South Station Peace Committee 5 group Applicant before: Wu Xiaoping Applicant before: Luo Tianzhen |
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