CN110119057A - Projection device - Google Patents
Projection device Download PDFInfo
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- CN110119057A CN110119057A CN201810124770.5A CN201810124770A CN110119057A CN 110119057 A CN110119057 A CN 110119057A CN 201810124770 A CN201810124770 A CN 201810124770A CN 110119057 A CN110119057 A CN 110119057A
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- Prior art keywords
- light
- colour wheel
- projection device
- ontology
- light source
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Classifications
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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
-
- 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
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
- G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
- G03B21/008—Projectors using an electronic spatial light modulator but not peculiar thereto using micromirror devices
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention provides a kind of projection device, including light source, the first colour wheel, digital micro-mirror device and control device.Wherein, the light source is for issuing light source light；First colour wheel, including ontology and driving unit.Wherein, light screening material is provided in the predeterminable area of the ontology, light screening material is extinction or reflecting material；The driving unit is arranged on the body and for driving the ontology to do cycle movement, so that light screening material is periodically located in the optical path of the light source light.The digital micro-mirror device includes the micro mirror array for modulating the ontology emergent ray.The control device and the digital micro-mirror device and the driving unit are electrically connected to control the driving unit and the ontology is driven to move, so that light screening material is located in the optical path of the light source light when the micro mirror array is when not subject image data control period is overturn.
Description
Technical field
The present invention relates to projection display technique field more particularly to a kind of projection devices.
Background technique
This part intends to provides background or context for a specific embodiment of the invention stated in claims.This
The description at place recognizes it is the prior art not because not being included in this section.
Part number micro-mirror device (Digital Micro-mirror Device, DMD) in the market, because overcoming itself
Certain characteristic issues goes the short time will be on digital micro-mirror device in the case where needing periodic not subject image signal control
Micro mirror array is overturn.Popular call is 1/99 problem, i.e., interior when going out light needed for each frame, has 1% time to use
It overturns to refresh shake, to avoid certain pixels, causes the problem of not overturning again without overturning for a long time, in turn
Generate point phenomenon.
However, the micro mirror array overturning that subject image signal does not control will lead at black field or polarisation is serious when low-light level,
Picture quality is emitted up for being promoted.
Summary of the invention
Projection device provided by the invention can be avoided the micro mirror array mentioned above due to digital micro-mirror device not by
Polarisation phenomenon caused by picture signal control period is overturn generates.
A kind of projection device, comprising:
Light source, for issuing light source light；
First colour wheel, comprising:
Ontology, is provided with light screening material in predeterminable area, and light screening material is extinction or reflecting material；
Driving unit is arranged on the body and is used to that the ontology to be driven to do cycle movement, so that light screening material
Periodically in the optical path of the light source light；
Digital micro-mirror device, including the micro mirror array for modulating the ontology emergent ray；And
Control device is electrically connected with the digital micro-mirror device and the driving unit to control the driving unit
The ontology is driven to move, so that light screening material is located at when the micro mirror array is when not subject image data control period is overturn
In the optical path of the light source light.
Projection device provided by the invention includes digital micro-mirror device, and the micro mirror array in the digital micro-mirror device is not
When subject image data control period is overturn, the light screening material on corresponding first colour wheel is located at the optical path where the light source light
On, causing first colour wheel in the period, the optical power of emergent ray or emergent ray is not lower, thus substantially without light
Line is incident to the digital micro-mirror device, so as to avoid above-mentioned since the micro mirror array of the digital micro-mirror device is not by image
Caused polarisation phenomenon generates during signal control overturning, is conducive to the outgoing picture quality for improving the projection device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the projection device that first method of the present invention provides.
Fig. 2 is the schematic perspective view of the first colour wheel shown in FIG. 1.
Fig. 3 is the first colour wheel shown in Fig. 2 along III-III line cross-sectional view.
Fig. 4 is the cross-sectional view in another embodiment of the first colour wheel shown in Fig. 3.
Fig. 5 is the structural schematic diagram for the projection device that second embodiment of the invention provides.
Fig. 6 is the schematic perspective view of the first colour wheel shown in fig. 5.
Fig. 7 is the cross-sectional view along line VI -- VI of the first colour wheel shown in fig. 6.
Fig. 8 is the structural schematic diagram for the projection device that third embodiment of the invention provides.
Fig. 9 is the structural schematic diagram of color block component shown in Fig. 8.
Main element symbol description
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying example/mode, the present invention will be described in detail.It should be noted that in the absence of conflict, embodiments herein/side
Feature in formula and embodiment/mode can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, described embodiment/
Mode is only a part of the embodiment of the present invention, instead of all the embodiments/mode.Based on the embodiments of the present invention/mode,
Every other embodiment/mode obtained by those of ordinary skill in the art without making creative efforts, all belongs to
In the scope of protection of the invention.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
Embodiment/mode purpose of body, it is not intended that in the limitation present invention.
Referring to Fig. 1, the structural schematic diagram of the projection device 100 provided for first embodiment of the invention.Projection device
100 include light source 110, guide device 120, the first colour wheel 130, digital micro-mirror device (calling DMD in the following text) 140, lens assembly 150 and
Control device 160.Wherein, for light source 110 for issuing light source light, guide device 120 guides the light source light to be incident to the first color
Wheel 130.In the present embodiment, the first colour wheel 130 is reflective colour wheel, and part light source light is in the enterprising traveling wave of the first colour wheel 130
Stimulated light is generated after long conversion, reflection, the guidance of the stimulated light and the light source light that do not converted successively through the first colour wheel 130 fill
120 guidance, the modulation of DMD140 are set, is finally emitted through lens assembly 150.Control device 160 respectively with DMD140 and first
Driving unit 139 in colour wheel 130 is electrically connected, synchronous with DMD140 to control the first colour wheel 130.
Specifically, light source 110 includes the illuminator for generating light source light, and in one embodiment, light source 110 also wraps
Include the light balancing device that even light is carried out to the light source light.
Further, light source 110 can be blue-light source, issue blue excitation light.It is understood that light source 110 is not
It is limited to blue-light source, light source 110 is also possible to purple light source, ultraviolet source, red light source or green light source etc..Present embodiment
In, the illuminator is blue laser, for issuing blue laser as exciting light.It is appreciated that the illuminator can be with
Including one, two blue lasers or the laser array being made of multiple blue lasers, the quantity of its specific laser
It can be selected according to actual needs.In one embodiment, the color and quantity of illuminator LED, its specific LED can be according to
It is selected according to actual needs.
The light balancing device is used to be emitted to subsequent guide device 120 after the light source light is carried out even light.In one kind
In embodiment, light balancing device is optical tunnel, it is to be understood that in other embodiments, light balancing device may include multiple
The light balancing devices such as eyelens, are not limited thereto.
The light source light that guide device 120 is used to that light source 110 to be guided to be emitted is incident to the first colour wheel 130, and guidance first
The light that colour wheel 130 is emitted is incident to DMD140.Guide device 120 includes optical device known in those skilled in the art,
Such as light splitting light combination element, collector lens etc..It in one embodiment, include at least one light splitting in guide device 120
Optical filter, at least one described light splitting optical filter is for the light within the scope of the first preset wavelength of transmission/reflection/angle, to incident light
Line carries out repairing color.In one embodiment, in guide device 120 include at least one light splitting optical filter, it is described at least one
Light splitting optical filter includes coating film area and peripheral region, at least one described light splitting optical filter is for transmiting the first preset wavelength model
Enclose interior light, and/or the light for reflecting within the scope of the second preset wavelength.In the above-described embodiment, the light splitting optical filter
Light is carried out guidance after repairing color, and, to DMD140, the first colour wheel 130 can omit filtering structure accordingly.In a kind of embodiment
In, it further include polarization beam splitter, such as polarization spectro piece or devating prism etc. in guide device 120.
It is understood that in one embodiment, the optical device in guide device 120 is set in light source 110,
To omit guide device 120, the light source light that light source 110 is emitted is incident to the first colour wheel 130, the first colour wheel along straightline propagation
The light of 130 outgoing is guided through light source 110 to DMD140.In a kind of possible embodiment, the light source light of the outgoing of light source 110
The first colour wheel 130 is exposed to along straightline propagation, the light of the first colour wheel 130 outgoing is directly transmitted to DMD140, draws to omit
Lead device 120.
DMD140 includes the micro mirror array for modulating 130 emergent ray of the first colour wheel.DMD140 is according to image data control
Flip angle/duration of the micro mirror array is made, to control the intensity of each pixel outgoing beam in the micro mirror array.So
And part DMD currently on the market needs periodic subject image data control not go to overcome itself certain characteristic issues
Short time overturns, such as 1/99 problem of popular call, i.e., interior when going out light needed for a frame, has 1% time to be used to
Refresh shake to overturn, avoid certain pixels, leads to subsequent the problem of not overturning without overturning for a long time.On however,
Stating uncontrolled overturning will lead to projected image a large amount of light beams is randomly generated at black field or when low-light level, cause polarisation serious, sternly
The picture quality of projection device 100 is affected again.
Lens assembly 150 is set to one end of projection device 100, and the projected light of DMD140 outgoing passes through lens assembly 150
Perspective plane is exposed to form projected image.Lens assembly 150 includes shell, the lens sleeve connecting with the shell and sets
The lens module being placed in the lens sleeve.In one embodiment, it is provided between lens sleeve and lens module anti-
Dirt structure.
Fig. 2-Fig. 3 is further regarded to incorporated by reference to Fig. 1, Fig. 2 is the schematic perspective view of the first colour wheel 130 shown in FIG. 1.
Fig. 3 is the first colour wheel 130 shown in Fig. 2 along III-III line cross-sectional view.
First colour wheel 130 includes ontology 131 and driving unit 139.Lightproof material is provided in the predeterminable area a of ontology 131
Material, light screening material is light absorbent.Driving unit 139 is set on ontology 131 and for driving ontology 131 to do periodical fortune
It is dynamic, so that light screening material is periodically located in the optical path of the light source light.In present embodiment, ontology 131 is circular ring shape, is driven
Moving cell 139 is set to the geometric center position of ontology 131, and driving unit 139 drives ontology 131 to do Periodic Rotating.At this
In embodiment, the frequency of the refreshing of DMD140 incident light is 60Hz, picture frame frequency 60Hz, then in each frame image, each face
Coloured light image is shown once.
Control device 160 and DMD140 and driving unit 139 are electrically connected to control driving unit 139 and drive ontology
131 movements, so that light screening material is located at described when the micro mirror array in DMD140 is when not subject image data control period is overturn
In the optical path of light source light.As needed for each frame of DMD140 go out light when in, have 1% time be used to refresh shake overturn one
Under, predeterminable area a is fan-shaped to be set to 131 surface of ontology, in the present embodiment, 131 surface of ontology shared by predeterminable area a
Angle is 1% × 360 degree=3.6 degree.It is understood that the angle on 131 surface of ontology shared by predeterminable area a can also be greater than
3.6 degree, alternatively, the summation of 131 surface angle of ontology shared by spaced multiple predeterminable area a is not less than 3.6 degree.Preset areas
During domain a is located at the light source light optical path, micro mirror array in DMD140 can not subject image data control and overturn, Bu Nengjin
The modulation of row light.
In one embodiment, driving unit 139 is set to one end of the first colour wheel 130, and drives the first colour wheel 130
Do periodic reciprocating motion, predeterminable area a is set on ontology 131, needed for each frame of DMD140 go out light when in, wherein
In the optical path for thering is 1% time predeterminable area a to be located at where the light source light.
In one embodiment, light absorbent is color silicon rubber or the transparent material for adulterating carbon dust.In another embodiment party
In formula, light absorbent or black material coating perhaps grey material coating or are also possible to the light absorbents of other colors and apply
Layer.It is understood that light absorbent can also be other light absorbents not mentioned above.
As shown in figure 3, ontology 131 includes substrate 134 and the wavelength conversion layer 133 being set on substrate 134.Substrate 134
There is high reflectance to light, the first colour wheel 130 is reflective colour wheel.Wavelength conversion layer 133 is provided with predeterminable area a and wavelength
Light screening material is provided in transition zone c, predeterminable area a, wavelength-converting region c is provided with wavelength conversion material, the wavelength convert
Material and light screening material are set to the incident side of ontology 131, that is, are set to the side of neighbouring light source 110 on substrate 134.The wave
Long transition material is used to carry out wavelength convert to incident light source light to obtain stimulated light.
Specifically, as shown in Fig. 2, in present embodiment, wavelength-converting region c includes multiple sections, the multiple section packet
Include red color segment R, yellow section Y, green segment G and blue section B.In one embodiment, predeterminable area a is set in a section
Portion, for example, predeterminable area a is set to inside red color segment R.In the present embodiment, predeterminable area a be set to different sections it
Between.Wherein, it is provided with corresponding color fluorescent powder in red color segment R, yellow section Y and the region green segment G, the light source light excitation corresponds to
Color fluorescence powder is to generate the stimulated light of corresponding color.In one embodiment, the light source light includes laser, blue section B
In be provided with scattering material.In one embodiment, blue colour fluorescent powder is provided in blue section B, the light source light excites institute
Blue colour fluorescent powder is stated to generate blue stimulated light.It is understood that being can be set in the c of wavelength-converting region for being emitted other face
The section of coloured light, such as setting red color segment R+ yellow section Y+ blue section B, yellow section Y+ blue section B, red color segment R+ green segment G+ are blue
Color section B, yellow section Y+ green segment G+ blue section B or the combination of other color sections, are not limited thereto.
Driving unit 139 drives ontology 131 to do Periodic Rotating, so that predeterminable area a and wavelength on the first colour wheel 130
Each bulk period in transition zone c is located in the optical path where the light source light.When predeterminable area a is located at the light source light
When in the optical path at place, light absorbent in predeterminable area a by the light source light absorption, the first colour wheel 130 not emergent ray or
The optical power of emergent ray is smaller.When in the optical path where wavelength-converting region c is located at the light source light, when the first colour wheel 130
Sequence is emitted red light-sodium yellow-blue light-green light.
In one embodiment, wavelength-converting region c includes multiple spaced for being emitted the area of same color light
Section, to realize the image display frequency of two speeds or higher speed, to reduce the probability of rainbow effect appearance.Specifically, exist
In the embodiment of one possible two speeds display frequency, be arranged at intervals on the c of wavelength-converting region two red color segments, two it is green
Color section, two blue sections and two yellow sections, the frequency of the refreshing of DMD140 incident light are 120Hz, picture frame frequency 60Hz, often
In one frame image, one circle of the rotation of driving unit 139, same color light, DMD140 are emitted each color to the outgoing of the first colour wheel 130 twice
Light image refreshes twice.
Also referring to Fig. 1 and Fig. 4, Fig. 4 is the cross-sectional view in another embodiment of the first colour wheel 130 shown in Fig. 3.?
In present embodiment, ontology 131 further includes for carrying out repairing color filtering optical layer 135 to the stimulated light, and filter layer 135 is far from substrate
134 and it is set to the surface of ontology 131, the different colours section in filter layer 135 is covered each by the correspondence on the c of wavelength-converting region
The section of color.In one embodiment, filter layer 135, wavelength conversion layer 133 and substrate 134 are cascading.
It is understood that filter layer 135 includes corresponding region b, corresponding region b covers pre- on wavelength conversion layer 133
If region a.Since the optical power of emergent ray or emergent ray is not smaller by predeterminable area a, the b property of can choose in corresponding region is set
Light screening material is set, in this kind of embodiment, is provided with light screening material in the b of corresponding region.
It in one embodiment, include the wavelength conversion layer and filter layer being stacked on the ontology of the first colour wheel 130,
Wavelength conversion material is provided on wavelength conversion layer, part light source light is converted to stimulated light by the wavelength conversion material, described
Stimulated light is emitted after passing through the filter layer.The filter layer is provided with predeterminable area, hides in the predeterminable area for being arranged
Luminescent material.
Further referring to Fig. 1, control device 160 and DMD140 and driving unit 139 are electrically connected, to control first
Colour wheel 130 is synchronous with DMD140.
Control device 160 can be central processing unit (Central Processing Unit, CPU), can also be it
His general processor, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Multiple interfaces or route electrical connection DMD140 and driving unit 139 are utilized Deng, control device 160.
Specifically, control device 160 controls driving unit 139 and drives the movement of ontology 131, so that when the micro mirror in DMD140
When not subject image data control period is overturn, the light screening material in predeterminable area a is located in the optical path of the light source light array.
I.e. when the micro mirror array in DMD140 is when not subject image data control period is overturn, light screening material is located at where the light source light
Optical path on, the optical power of emergent ray or emergent ray is not lower for the first colour wheel 130 at this time, to enter substantially without light
It is incident upon DMD140, avoids the above-mentioned micro mirror array not caused polarisation phenomenon production of subject image signal control overturning due to DMD140
It is raw, be conducive to the outgoing picture quality for improving projection device 100.
Fig. 5-Fig. 7 is please referred to, Fig. 5 is the structural schematic diagram for the projection device 200 that second embodiment of the invention provides.Figure
6 be the schematic perspective view of the first colour wheel 230 shown in fig. 5.Fig. 7 is the first colour wheel 230 shown in fig. 6 along line VI -- VI
Cross-sectional view.The projection device 200 and the main distinction of projection device 100 that present embodiment provides are: in projection device 200
First colour wheel 230 of application is transmission-type colour wheel, and accordingly has adjusted the pass of the position between the first colour wheel 230 and other devices
System.
Projection device 200 includes light source 210, guide device 220, the first colour wheel 230, digital micro-mirror device (calling DMD in the following text)
240, lens assembly 250 and control device 260.Wherein, for light source 210 for issuing light source light, guide device 220 guides the light
Source light is incident to the first colour wheel 230.In the present embodiment, the first colour wheel 230 is transmission-type colour wheel, and part light source light is first
Stimulated light is generated after carrying out wavelength convert on colour wheel 230, the stimulated light and the light source light that do not converted are successively through the first colour wheel
230 transmission, the modulation of DMD240, are finally emitted through lens assembly 250.Control device 260 respectively with DMD240 and the first color
Driving unit 239 in wheel 230 is electrically connected, synchronous with DMD240 to control the first colour wheel 230.
It should be noted that in the range of spirit or essential attributes of the invention, suitable for first embodiment
Each concrete scheme can also be accordingly suitable for second embodiment, for the sake of saving space and avoiding repetition, herein just not
It repeats again.
First colour wheel 230 includes ontology 231 and driving unit 239.Lightproof material is provided in the predeterminable area a of ontology 231
Expect, in present embodiment, light screening material is extinction or reflecting material.Driving unit 239 is set on ontology 231 and for driving
Dynamic ontology 231 does cycle movement, so that light screening material is periodically located in the optical path of the light source light of the sending of light source 210.
Reflecting material has high reflectance in ultraviolet/visible light region, can be such as high anti-aluminium of specular reflective material, silver
High-reflectivity metal, or the diffuse-reflective material such as silica gel containing scattering particles, reflecting ceramic.The reflecting ceramic is
Aluminium oxide ceramics, zirconia ceramics, Boria or the composite ceramics for aoxidizing zirconium doped alumina.
As shown in fig. 7, ontology 231 includes wavelength conversion layer 233, substrate 234 and filter layer 235.Wherein, substrate 234 has
There is high-transmission rate, wavelength conversion layer 233 is provided with predeterminable area a and wavelength-converting region c, is provided with lightproof material in predeterminable area a
Expect, the wavelength convert material for being emitted at least one stimulated light under the excitation of the light source light is provided in the c of wavelength-converting region
Material.Specifically, wavelength conversion layer 233 is set to the photosphere that enters of ontology 231, and filter layer 235 is set to the light emission side of ontology 231.
In the present embodiment, wavelength conversion layer 233, substrate 234 and filter layer 235 are cascading.It is understood that at it
In his embodiment, specific structure, wavelength conversion layer can be added or omitted between wavelength conversion layer 233 and filter layer 235
233 can be set with filter layer 235 in the surface of ontology 231, also can be set inside ontology 231, are not limited thereto.
Further, filter layer 235 includes corresponding region b, and corresponding region b covers the preset areas on wavelength conversion layer 233
Domain a.Since the optical power of emergent ray or emergent ray is not smaller by predeterminable area a, the setting of the corresponding region b property of can choose is hidden
Luminescent material is provided with light screening material in the b of corresponding region in the present embodiment.
In present embodiment, the first colour wheel 230 is transmission-type colour wheel, same as the first embodiment to be, control device
260 are electrically connected with DMD240 and driving unit 239, synchronous with DMD240 to control the first colour wheel 230.Specifically, it controls
Device 260 controls driving unit 239 and ontology 231 is driven to move, so that when the micro mirror array in DMD240 is in not subject image data
When control period is overturn, the light screening material in predeterminable area a is located in the optical path of the light source light.I.e. when the micro mirror in DMD240
When not subject image data control period is overturn, light screening material is located in the optical path where the light source light array, thus first
The optical power of emergent ray or emergent ray is not lower for colour wheel 230, and then is incident to DMD240 without light substantially, avoids
The above-mentioned micro mirror array due to DMD240 polarisation phenomenon caused by subject image signal control is not overturn generates, and is conducive to improve projection
The outgoing picture quality of equipment 200.
Fig. 8-Fig. 9 is please referred to, Fig. 8 is the structural schematic diagram for the projection device 300 that third embodiment of the invention provides.Figure
9 be the structural schematic diagram of color block component 330A shown in Fig. 8.The projection device 300 and projection device 200 that present embodiment provides
It compares, the main distinction is: color block component 330A is set in projection device 300 to replace the first colour wheel in projection device 200
230.It should be noted that each tool in the range of spirit or essential attributes of the invention, suitable for second embodiment
Body scheme can also be just no longer superfluous herein accordingly suitable for third embodiment, for the sake of saving space and avoiding repetition
It states.
Color block component 330A includes the first colour wheel 330 and the second colour wheel 370.Wherein, the first colour wheel 330 is neighbouring light source
The transmission-type colour wheel of 310 settings, the second colour wheel 370 are arranged adjacent to DMD340.First colour wheel 330 is driving with the second colour wheel 370
The cycle movement synchronized under the drive of unit.
Further, the first colour wheel 330 has been stacked wavelength convert material layer and substrate.The substrate has highly transmissive
Rate, the first colour wheel 330 are transmission-type colour wheel.Predeterminable area, setting in the predeterminable area are provided on the wavelength conversion layer
There is a light screening material, in present embodiment, light screening material is extinction or reflecting material.On the wavelength conversion layer except predeterminable area
It is provided with wavelength conversion material.Optical filter corresponding with the color of the wavelength conversion material is provided on second colour wheel 370.
It is understood that the second colour wheel 370 includes corresponding region, the corresponding region is corresponded on the first colour wheel 330
Predeterminable area setting.Since the optical power of emergent ray or emergent ray is not smaller for the predeterminable area, the corresponding region
That is, in one embodiment the property of can choose setting light screening material is provided with light screening material in the corresponding region.
In one embodiment, color block component 330A includes the first colour wheel 330 and the second colour wheel 370.Present embodiment
Unlike third embodiment, the second colour wheel 370 is the transmission-type colour wheel that neighbouring light source 310 is arranged, and the first colour wheel 330 is adjacent
Nearly DMD340 setting.
Specifically, being provided with wavelength conversion material on the second colour wheel 370, the light source light for being emitted to light source 310 is carried out
Corresponding stimulated light is generated after wavelength convert.First colour wheel 330 includes ontology and driving unit, and the ontology is provided with preset areas
Domain is provided with the filter area for repair to light color on the ontology except the predeterminable area.In a kind of embodiment
In, the first colour wheel 330 is filter wheel, is provided with except the predeterminable area for being emitted difference on the ontology of the first colour wheel 330
Multiple sections of color of light, the optical filter of each section setting corresponding color.The predeterminable area is set between different sections.
Same as the third embodiment to be, control device 360 and DMD340 and the driving unit are electrically connected, with
It is synchronous with DMD340 to control the first colour wheel 330, the second colour wheel 370.Specifically, control device 360 controls the driving unit and drives
The ontology movement is moved, so that when the micro mirror array in DMD340 is when not subject image data control period is overturn, it is described default
Light screening material in region is located in the optical path of the light source light, at this point, the first colour wheel 330 not emergent ray or emergent ray
Optical power it is lower, so that DMD340 is incident to without light substantially, so as to avoid the above-mentioned micro mirror array due to DMD340
Polarisation phenomenon caused by subject image signal control is not overturn generates, and is conducive to the outgoing picture quality for improving projection device 300.
It in one embodiment, include the first colour wheel, institute in color block component 330A unlike third embodiment
It states and is provided with predeterminable area on the ontology of the first colour wheel, be provided with light screening material in the predeterminable area, on first colour wheel
Translucent material is provided with outside predeterminable area.Driving device controls driving unit and drives the first colour wheel movement, so that the DMD
In micro mirror array not subject image data control period overturn when, light screening material is located in the optical path of the light source light.It can be with
Understand, in one embodiment, color block component 330A further include be set in the light source light optical path with the second color
Wheel.Wherein, second colour wheel is used to the light source light being converted to stimulated light, it is to be understood that on second colour wheel
It can be set filter area or color block component 330A be additionally provided with third colour wheel for optical filtering.
In one embodiment, projection device includes light source, the first colour wheel, DMD and control device.Wherein, described
Color wheel includes ontology and driving unit, is provided with light screening material in the predeterminable area of the ontology, light screening material be extinction or
Reflecting material.The driving unit is arranged on the body and for driving the ontology to do cycle movement, so that shading
Material periodicities in the optical path of the light source light.The DMD includes the micro mirror for modulating the ontology emergent ray
Array.The control device and the DMD and the driving unit are electrically connected to control described in the driving unit driving
Ontology movement, so that light screening material is located at the light source when the micro mirror array is when not subject image data control period is overturn
In the optical path of light.
When the micro mirror array in the DMD is when not subject image data control period is overturn, first colour wheel is not emitted
The optical power of light or emergent ray is lower, to be incident to the DMD without light substantially, so as to avoid it is above-mentioned due to
The micro mirror array of DMD polarisation phenomenon caused by subject image signal control is not overturn generates, and is conducive to improve the projection and sets
Standby outgoing picture quality.
In several embodiment/modes provided by the present invention, it should be appreciated that the method and apparatus, it can also
To realize in other way, Installation practice described above is only illustrative, the division of the module is one
Kind of logical function partition, there may be another division manner when realization.
It is obvious to a person skilled in the art that the present invention is not limited to the above exemplary embodiments/details of mode, and
And without departing from the spirit or essential characteristics of the present invention, the present invention can be realized in other specific forms.Therefore,
In all respects, should all regard embodiment/mode as exemplary, and it is non-limiting, model of the invention
It encloses and is indicated by the appended claims rather than the foregoing description, it is intended that the meaning and model that the equivalent requirements of the claims will be fallen in
All changes in enclosing are included in the present invention.It should not treat any reference in the claims as limiting related power
Benefit requires.Furthermore, it is to be understood that one word of " comprising " does not exclude other units or steps, odd number is not excluded for plural number.In device claim
Multiple devices of statement can also be implemented through software or hardware by the same device or system.The first, the second equal words
It is used to indicate names, and does not indicate any particular order.
Finally it should be noted that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although reference
Preferred embodiment/mode describes the invention in detail, those skilled in the art should understand that, it can be to this hair
Bright technical solution is modified or equivalent replacement, without departing from the spirit and scope of the technical solution of the present invention.
Claims (16)
1. a kind of projection device characterized by comprising
Light source, for issuing light source light；
First colour wheel, comprising:
Ontology, is provided with light screening material in predeterminable area, and light screening material is extinction or reflecting material；
Driving unit was arranged on the body and is used to that the ontology to be driven to do cycle movement, so that the light screening material period
Property in the optical path of the light source light；
Digital micro-mirror device, including the micro mirror array for modulating the ontology emergent ray；And control device, with the number
Micro-mirror device and the driving unit are electrically connected to control the driving unit and drive the ontology movement, so that when described
When not subject image data control period is overturn, light screening material is located in the optical path of the light source light micro mirror array.
2. projection device as described in claim 1, which is characterized in that the ontology is additionally provided with except the predeterminable area
Wavelength conversion material, the wavelength conversion material and light screening material are located at interval in the optical path of the light source light, are used for part
Light source light is emitted after being converted to stimulated light.
3. projection device as claimed in claim 2, which is characterized in that the ontology includes multiple sections, the multiple section
In at least two sections in be separately provided for outgoing different colours light wavelength conversion material.
4. projection device as claimed in claim 3, which is characterized in that be additionally provided in a section in the multiple section
Scattering material.
5. projection device as claimed in claim 2, which is characterized in that the ontology includes substrate, the wavelength conversion material
And light screening material is set to the incident side of the substrate.
6. projection device as claimed in claim 5, which is characterized in that the substrate has high reflectance, and light screening material is to inhale
Luminescent material.
7. projection device as claimed in claim 5, which is characterized in that the substrate has high-transmission rate.
8. projection device as claimed in claim 7, which is characterized in that the light emission side of the ontology is provided with filter layer.
9. projection device as claimed in claim 8, which is characterized in that include for covering the preset areas on the filter layer
The corresponding region in domain is provided with light screening material in the corresponding region.
10. projection device as claimed in claim 7, which is characterized in that the projection device further includes and the driving unit
Second colour wheel of connection, the period that second colour wheel synchronizes under the drive of the driving unit with first colour wheel
Property movement, be provided with optical filter corresponding with the color of the wavelength conversion material on second colour wheel.
11. projection device as claimed in claim 10, which is characterized in that be provided on second colour wheel corresponding described default
The corresponding region of region setting, is provided with light screening material in the corresponding region.
12. projection device as described in claim 1, which is characterized in that the region setting on the ontology other than predeterminable area
There is the filter area for repair to light color.
13. projection device as claimed in claim 12, which is characterized in that be additionally provided on the ontology and the filter area face
Part light source light is converted to stimulated light by the corresponding wavelength conversion material of color, the wavelength conversion material, and the stimulated light passes through
It is emitted after the filter area.
14. projection device as claimed in claim 12, which is characterized in that the projection device further includes the second colour wheel, described
The cycle movement that second colour wheel synchronizes under the drive of the driving unit with first colour wheel, second colour wheel
On be provided with wavelength conversion material corresponding with the filter area color, the wavelength conversion material is converted to part light source light
First colour wheel is incident to after stimulated light.
15. projection device as claimed in claim 12, which is characterized in that the filter area includes for being emitted different colours light
Multiple sections, the optical filter of each section setting corresponding color.
16. the projection device as described in claim 3,4 or 15, which is characterized in that the predeterminable area is set to different sections
Between.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810124770.5A CN110119057B (en) | 2018-02-07 | 2018-02-07 | Projection device |
| PCT/CN2018/094727 WO2019153636A1 (en) | 2018-02-07 | 2018-07-06 | Projector device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810124770.5A CN110119057B (en) | 2018-02-07 | 2018-02-07 | Projection device |
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| Publication Number | Publication Date |
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| CN110119057A true CN110119057A (en) | 2019-08-13 |
| CN110119057B CN110119057B (en) | 2021-05-04 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810124770.5A Active CN110119057B (en) | 2018-02-07 | 2018-02-07 | Projection device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110119057B (en) |
| WO (1) | WO2019153636A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019153636A1 (en) | 2019-08-15 |
| CN110119057B (en) | 2021-05-04 |
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