CN209103093U - A kind of even smooth projection display equipment of three-dimensional space scanning - Google Patents
A kind of even smooth projection display equipment of three-dimensional space scanning Download PDFInfo
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- CN209103093U CN209103093U CN201920037755.7U CN201920037755U CN209103093U CN 209103093 U CN209103093 U CN 209103093U CN 201920037755 U CN201920037755 U CN 201920037755U CN 209103093 U CN209103093 U CN 209103093U
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- lens
- mould group
- semiconductor laser
- light source
- projection display
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Abstract
The utility model provides a kind of three-dimensional space scanning even smooth projection display equipment, it include: red light semiconductor laser light source mould group, Green-emitting semiconductor laser light source mould group, blue-light semiconductor laser light source mould group, X beam cementing prism, shrink beam collimates mould group, it is eccentrically rotated globe lens, light pipe, relay lens group, reflecting mirror, collimation lens, DMD and projection lens, RGB laser is subjected to conjunction beam by X beam cementing prism, by shrink beam, collimation, which is input to, is eccentrically rotated globe lens, so that focal position constantly changes, the rotary scanning image an of annulus is approximately formed in focal plane, into light pipe, obtain uniform rectangular light spot, relayed lens group, reflecting mirror, collimation lens is incident on DMD and is modulated, obtain projection-display image, recently enter projection lens, globe lens technology is eccentrically rotated both to improve Even light effect reduces speckle contrast again, is suitable for laser projection display technology field.
Description
Technical field
The utility model relates to laser projection display field, specially a kind of even smooth Projection Display dress of three-dimensional space scanning
It sets.
Background technique
Laser display technology is the forth generation display technology after white and black displays, colored display and number display, laser
Projection display technique and traditional display technologies have following significant advantage: (1) colour gamut is broad, and color domain coverage ratio is traditional NTSC
Television color gamut can more realistically show the color of nature more than twice；(2) service life is long, and laser light source used, the service life can
Up to 10000 hours or more, degenerative process was slow, can keep high image quality for a long time, reduce cost；(3) high brightness, conventional projection
Machine (xenon lamp or mercury lamp), single machine can reach 33000 lumen luminous fluxes, and laser projection can make luminous flux reach 10000-
It is more than 50000 lumens；(4) color saturation is high, high resolution, and laser has very narrow spectral line width, so saturation degree is higher
And its good directionality, easily acquisition high-resolution display；Just because of These characteristics, it has in terms of realizing over-large screen display system
The advantage that other display technologies cannot compare.
In order to improve illumination and display brightness, multiple red, green, blue semiconductor laser array arrangement conducts are mostly used at present
Display or coherent illumination source, but since the asymmetry of arrangement, incident multiple laser may deviate optical axis, cause to synthesize
The sideband that will appear other colors when coloured light causes the even light effect of light pipe bad, influences illumination and Projection Display effect.
The characteristics of coherence high due to laser, projects the laser on screen and interferes the light and dark speckle of generation,
Here it is speckle phenomena common in laser display, it is unclear that speckle will lead to projected image fuzzy pictures, seriously affects into image quality
Amount；Therefore eliminating speckle effect is the difficult point that laser display technology must overcome.
The existing laser Speckles Technique that disappears has: using the diversity of optical maser wavelength, vibration screen, vibration optical fiber, using fortune
Dynamic diffusion sheet, but these methods reduce speckle contrast effect it is limited, and will increase system complexity and complete machine at
This.
Utility model content
For the deficiency of prior art, the utility model provides a kind of even smooth Projection Display dress of three-dimensional space scanning
It sets, using globe lens technology is eccentrically rotated, obtains the effect of multiple image superposition, not only improved even light effect but also reduced speckle
Contrast improves the effect that laser projection is shown, is suitable for laser projection display field.
The utility model adopts the following technical scheme that realization: a kind of even smooth projection display equipment of three-dimensional space scanning,
It is characterized by comprising red light semiconductor laser light source mould groups, Green-emitting semiconductor laser light source mould group, blue-light semiconductor laser light
Source mould group, X beam cementing prism, shrink beam collimation mould group, be eccentrically rotated globe lens, motor, light pipe, relay lens group, reflecting mirror,
Collimation lens, digital micro mirror element (DMD) and projection lens, X beam cementing prism side are provided with red light semiconductor laser
Light source module group, Green-emitting semiconductor laser light source mould group and blue-light semiconductor laser light source mould group, the X beam cementing prism other side are set
It is equipped with shrink beam collimation mould group, shrink beam collimation mould group side, which is provided with, is eccentrically rotated globe lens, described to be eccentrically rotated lens one
Side is provided with light pipe, and the light pipe side is provided with relay lens group, and the relay lens group side is provided with instead
Mirror is penetrated, the reflecting mirror side is provided with collimation lens, and the collimation lens side is provided with digital micro mirror element (DMD),
Digital micro mirror element (DMD) side is provided with projection lens.
Wherein, the rotary shaft for being eccentrically rotated globe lens deviates globe lens center, and passes through motor driven high speed rotation,
And it is fixed by mechanical clamp.
Wherein, red light semiconductor laser light source mould group, Green-emitting semiconductor laser light source mould group and the blue-light semiconductor
Laser light source mould group is rearranged by single red, green, blue semiconductor laser or multiple red, green, blue semiconductor lasers.
Wherein, the deielectric-coating transmission and reflected waveband and red, green, blue laser source wavelength that the X beam cementing prism is plated
Match.
Wherein, shrink beam collimation mould group is for obtaining collimation directional light and controlling beam diameter and globe lens diameter
Match.
Wherein, the type of the light pipe has hollow and two kinds solid, for exporting uniform rectangular light spot.
Wherein, the relay lens group is used to the uniform rectangular hot spot of rectangle square rod outgoing end face being imaged onto DMD core
On piece.
Wherein, the reflecting mirror, to RGB laser total reflection, for changing the direction of propagation of RGB laser beam.
Wherein, the red, green, blue semiconductor laser not only can be in such a way that X prism closes beam, can also be using sky
Between array arrangement combination space close beam mode.
Compared with prior art, safe and convenient to use the utility model has the beneficial effects that the utility model is scientific and reasonable:
1, using globe lens is eccentrically rotated, so that focal position constantly changes, a spacescan light field is obtained, so that product
Divide the even light effect of square rod more preferable.
2, there are other face when the rotary scanning light field obtained can solve the laser light source secondary colour light of asymmetric geometry
The problem of color sideband, improve illumination and display effect.
3, using globe lens is eccentrically rotated, the effect of available multiple image superposition has the effect for partially removing speckle
Fruit.
4, apparatus structure is simple, stable, and cost is relatively low.
Detailed description of the invention
Fig. 1 is that a kind of three-dimensional space of the utility model scans even smooth projection display equipment structural schematic diagram；
Fig. 2 is the scanning light field schematic diagram for being eccentrically rotated globe lens acquisition；
Fig. 3 is the device that the utility model closes beam using multiple semiconductor lasers as laser light source and using X prism
Schematic diagram；
Fig. 4 is that the utility model laser light source is used space arrangement and directly closed the schematic device of beam using space；
Fig. 5 is the even smooth schematic diagram of light pipe；
Appended drawing reference meaning in figure are as follows: 1, red light semiconductor laser light source mould group；2, Green-emitting semiconductor laser light source mould group；
3, blue-light semiconductor laser light source mould group；4, X beam cementing prism；5, shrink beam collimates mould group；6, it is eccentrically rotated globe lens；7, motor；
8, light pipe；9, relay lens group；10, reflecting mirror；11, collimation lens；12, digital micro mirror element (DMD)；13, it projects
Camera lens.
Specific embodiment
Specific embodiment of the utility model is described in detail with reference to the accompanying drawing.
Embodiment: as shown in Figs. 1-5, the utility model provides a kind of technical solution, and a kind of even light of three-dimensional space scanning is thrown
Shadow display device, comprising: red light semiconductor laser light source mould group 1, Green-emitting semiconductor laser light source mould group 2, blue-light semiconductor swash
Radiant mould group 3, shrink beam collimation mould group 5, is eccentrically rotated globe lens 6, motor 7, light pipe 8, relay lens at X beam cementing prism 4
Group 9, reflecting mirror 10, collimation lens 11, digital micro mirror element (DMD) 12 and projection lens 13, X beam cementing prism side are set
It is equipped with red light semiconductor laser light source mould group, Green-emitting semiconductor laser light source mould group and blue-light semiconductor laser light source mould group, institute
It states the X beam cementing prism other side and is provided with shrink beam collimation mould group, shrink beam collimation mould group side, which is provided with, is eccentrically rotated globe lens,
The lens side that is eccentrically rotated is provided with light pipe, and the light pipe side is provided with relay lens group, the relaying
Lens group side is provided with reflecting mirror, and the reflecting mirror side is provided with collimation lens, and the collimation lens side is provided with number
Word formula micro mirror element (DMD), digital micro mirror element (DMD) side are provided with projection lens.Wherein, red light semiconductor swashs
Radiant mould group 1, Green-emitting semiconductor laser light source mould group 2, blue-light semiconductor laser light source mould group 3, by by it is single it is red, green,
Blue semiconductor laser is rearranged by multiple red, green, blue semiconductor lasers, as shown in figs. 1 and 3, RGB laser
Beam carries out conjunction beam, the transmission for the deielectric-coating that X beam cementing prism 4 is plated and reflected waveband and red, green, blue laser light by X beam cementing prism 4
Source wavelength matches, if red, green, blue semiconductor laser light resource carries out periodic arrangement, can directly adopt the mode that beam is closed in space
Conjunction beam is carried out, mould group 5 obtains collimation directional light and beam diameter and globe lens are straight as shown in figure 4, then collimating by shrink beam
Diameter matches, and is eccentrically rotated globe lens 6 by what motor 7 drove, with certain revolving speed high speed rotation, and is fixed by mechanical clamp,
Due to causing the focus of globe lens rotationally-varying always using being eccentrically rotated, ideally a rotation can be obtained in focal plane
The ring of light of transformationization, as shown in Fig. 2, A is to be eccentrically rotated axis point, O1、O2、O3、O4Respectively globe lens 0 °, 90 °, 180 °,
The position of 270 ° of centre ofs sphere, the focus of globe lens is respectively O at this time1'、O2'、O3'、O4', but due to rotating shaft eccentric amount less and
The presence of globe lens spherical aberration, usually obtain be a high brightness hot spot rather than annulus ideally, using bias
Rotate globe lens, it is ensured that expand the angle of divergence in the case where etendue is constant, since focal position constantly changes, lead
It is also continually changing that the incidence point position of light pipe 8 is incident in cause, so that the even light effect of light pipe 8 is more preferable, and shape
At rotary scanning light field, the laser light source of asymmetric geometry can be made up, when secondary colour light may go out due to deviateing optical axis
The defect of other existing color sidebands makes light pipe 8 obtain better even light effect, and also has multiple image superposition simultaneously
Effect because theoretical according to Goodman speckle, if having N number of irrelevant speckle pattern to be superimposed, speckle contrast will
It is reduced to original speckle patternTo which the present apparatus achievees the effect that centainly to eliminate speckle.
The type of light pipe 8 has hollow and two kinds solid, using multiple reflections of the light in square rod, is being emitted it
Face forms uniform rectangular light spot, and even smooth principle is as shown in figure 5, rectangle square rod 8 is emitted the uniform of end face by relay lens group 9
Rectangular light spot is imaged on dmd chip 12, then changes the direction of propagation by reflecting mirror 10, then collimated by collimation lens 11, is incident on
On dmd chip 12, incident RGB laser is modulated by dmd chip according to the picture signal of input, obtains Projection Display
Image is input in projection lens 13, finally obtains the projection-display image of high quality on the screen.
It should be noted last that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, to the greatest extent
Pipe is described in detail the utility model referring to embodiment, those skilled in the art should understand that, it is practical to this
Novel technical solution is modified or replaced equivalently, without departure from the spirit and scope of the technical solution of the utility model,
It should all cover in the claims of the utility model.
Claims (9)
1. a kind of three-dimensional space scans even smooth projection display equipment, it is characterised in that: including red light semiconductor laser light source mould group,
Green-emitting semiconductor laser light source mould group, X beam cementing prism, shrink beam collimation mould group, is eccentrically rotated blue-light semiconductor laser light source mould group
Globe lens, motor, light pipe, relay lens group, reflecting mirror, collimation lens, digital micro mirror element (DMD) and projection lens
Head, X beam cementing prism side are provided with red light semiconductor laser light source mould group, Green-emitting semiconductor laser light source mould group and blue light
Semiconductor laser light resource mould group, the X beam cementing prism other side are provided with shrink beam collimation mould group, and the shrink beam collimates mould group side
It is provided with and is eccentrically rotated globe lens, the lens side that is eccentrically rotated is provided with light pipe, the light pipe side setting
There is relay lens group, the relay lens group side is provided with reflecting mirror, and the reflecting mirror side is provided with collimation lens, described
Collimation lens side is provided with digital micro mirror element (DMD), and digital micro mirror element (DMD) side is provided with projection lens
Head.
2. three-dimensional space according to claim 1 scans even smooth projection display equipment, it is characterised in that: described to be eccentrically rotated
The rotary shaft of globe lens deviates globe lens center, and by motor driven high speed rotation, and is fixed by mechanical clamp.
3. three-dimensional space according to claim 1 scans even smooth projection display equipment, it is characterised in that: the feux rouges half
Conductor Laser light source module group, Green-emitting semiconductor laser light source mould group and blue-light semiconductor laser light source mould group are by single red, green, blue
Semiconductor laser or multiple red, green, blue semiconductor lasers rearrange.
4. three-dimensional space according to claim 1 scans even smooth projection display equipment, it is characterised in that: the X closes beam
The deielectric-coating transmission and reflected waveband that prism is plated match with red, green, blue laser source wavelength.
5. three-dimensional space according to claim 1 scans even smooth projection display equipment, it is characterised in that: the shrink beam is quasi-
Straight mould group matches for obtaining collimation directional light and controlling beam diameter with globe lens diameter.
6. three-dimensional space according to claim 1 scans even smooth projection display equipment, it is characterised in that: the integral side
The type of stick have it is hollow and two kinds solid, and for exporting uniform rectangular light spot.
7. three-dimensional space according to claim 1 scans even smooth projection display equipment, it is characterised in that: the relaying is saturating
Microscope group is used to the uniform rectangular hot spot of rectangle square rod outgoing end face being imaged onto dmd chip.
8. three-dimensional space according to claim 1 scans even smooth projection display equipment, it is characterised in that: the reflection
Mirror, to RGB laser total reflection, for changing the direction of propagation of RGB laser beam.
9. three-dimensional space according to claim 1 scans even smooth projection display equipment, it is characterised in that: the red, green, blue
Semiconductor laser not only can also combine space to close beam in such a way that X prism closes beam using space array arrangement
Mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920037755.7U CN209103093U (en) | 2019-01-10 | 2019-01-10 | A kind of even smooth projection display equipment of three-dimensional space scanning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920037755.7U CN209103093U (en) | 2019-01-10 | 2019-01-10 | A kind of even smooth projection display equipment of three-dimensional space scanning |
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| Publication Number | Publication Date |
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| CN209103093U true CN209103093U (en) | 2019-07-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471326A (en) * | 2019-01-10 | 2019-03-15 | 合肥全色光显科技有限公司 | A kind of even smooth projection display equipment of three-dimensional space scanning |
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2019
- 2019-01-10 CN CN201920037755.7U patent/CN209103093U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471326A (en) * | 2019-01-10 | 2019-03-15 | 合肥全色光显科技有限公司 | A kind of even smooth projection display equipment of three-dimensional space scanning |
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