CN107765500A - A kind of DMD modulation imaging systems and laser projection device - Google Patents
A kind of DMD modulation imaging systems and laser projection device Download PDFInfo
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- CN107765500A CN107765500A CN201710807372.9A CN201710807372A CN107765500A CN 107765500 A CN107765500 A CN 107765500A CN 201710807372 A CN201710807372 A CN 201710807372A CN 107765500 A CN107765500 A CN 107765500A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 239000003086 colorant Substances 0.000 claims abstract description 34
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 238000009738 saturating Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000001228 spectrum Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 4
- 230000000644 propagated effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000011514 reflex Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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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
- 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
-
- 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
- G03B21/208—Homogenising, shaping of the illumination light
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3161—Modulator illumination systems using laser light sources
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Optics & Photonics (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention discloses a kind of DMD modulation imaging systems and laser projection device, it is related to technical field of laser display, for improving the spectrum utilization factor of DMD modulation imaging systems.The system includes：LASER Light Source, the first dichroscope, the first dmd chip and the second dmd chip；LASER Light Source is used for the light beam for exporting at least three kinds colors；First dichroscope is used to reflect the light beam of at least two colors and transmits the light beam of at least one color, or the light beam of at least one color of reflection and the light beam of at least two colors of transmission；First dmd chip is used for the light beam for receiving the transmission of the first dichroscope and to being exported after the beam modulation of the first dichroscope transmission；Second dmd chip is used for the light beam for receiving the reflection of the first dichroscope and to being exported after the beam modulation of the first dichroscope reflection.The present invention is used for the manufacture of DMD modulation imaging systems.
Description
Technical field
The present invention relates to technical field of laser display, more particularly to a kind of DMD modulation imaging systems and laser projection to set
It is standby.
Background technology
With the development of laser display technology, LASER Light Source progressively substitutes light emitting diode (English name：Light
Emitting Diode, referred to as：LED digital micromirror elements (English full name) is turned into：Digital Micromirror Device,
Referred to as：DMD the principal light source of imaging system) is modulated.
Shown in reference picture 1, DMD modulation imaging system of the prior art includes：Blue laser 11, dichroscope 12,
Collimation lens set 13, fluorescent wheel 14, blue light loop 15, filter wheel 16, dmd chip 17 and camera lens 18.Its operation principle is：It is first
First blue (B) laser beam is incident upon on dichroscope 12 as caused by blue laser 11, because dichroscope 12 is to swashing
Light light beam is transmitted, therefore laser beam is incident upon after collimation lens set 13 on fluorescent wheel 14；It is provided with fluorescent wheel 14 glimmering
Light region and regional transmission；When laser beam exposes to the fluorescence area of fluorescent wheel 14, excite and produce wide spectrum fluorescence and quilt
The substrate reflection of fluorescent wheel 14 is projected to dichroscope 12；When laser beam exposes to the regional transmission of fluorescent wheel 14, laser
Light beam is projected to dichroscope 12 transmitted through fluorescent wheel 14 and by blue light loop 15；Again because dichroscope 12 is anti-to fluorescence
Penetrate, therefore the fluorescence and laser beam that are incident upon on dichroscope 12 are further projected to filter wheel 16；Filter wheel 16 is at least
A kind of wide spectrum fluorescence of color is filtered, so as to the output red of dmd chip 17 (R) light or green (G) light；Dmd chip
17 regulations enter the light quantity of camera lens 18, and lost scene 18 receives output R, G, B the three coloured light image of the light after DMD is modulated.
As described above, when broad-spectrum beam is filtered into homogeneous beam by filter wheel, its all band in broad-spectrum beam
Light by filter loss, and in laser display apparatus, projection brightness directly determines its dimensional performance that can be projected；Project bright
Degree is bigger, and the size that can be projected is bigger, therefore how to improve the spectrum utilization factor of DMD modulation imaging systems, so as to improve
Those skilled in the art's problem urgently to be resolved hurrily during the projection brightness of laser display apparatus.
The content of the invention
Embodiments of the invention provide a kind of DMD modulation imaging systems and laser projection device, for improving DMD modulation
The spectrum utilization factor of imaging system.
To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：
First aspect, there is provided a kind of DMD modulates imaging system, including：LASER Light Source, the first dichroscope, the first DMD cores
Piece and the second dmd chip；
The LASER Light Source is used for the light beam for exporting at least three kinds colors, wherein, the light beam includes：Laser beam and/
Or fluorescent light beam；
First dichroscope is located in the light path of the light beam, for reflecting light beam and the transmission of at least two colors
The light beam of at least one color, or the light beam of at least one color of reflection and the light beam of at least two colors of transmission；
First dmd chip is used for the light for receiving first dichroscope transmission and saturating to first dichroscope
Exported after the light modulation penetrated；
Second dmd chip is used for the light for receiving first dichroscope reflection and anti-to first dichroscope
Exported after the light modulation penetrated.
Second aspect, there is provided a kind of laser projection device, including above-mentioned DMD modulation imaging systems.
DMD provided in an embodiment of the present invention modulates imaging system, including：LASER Light Source, the first dichroscope, the first DMD
Chip and the second dmd chip, wherein LASER Light Source can export the light beam of at least three kinds colors, and the first dichroscope can be anti-
Penetrate the light beam of at least two colors and transmit the light beam of at least one color, or the light beam of at least one color of reflection and transmission
The light beam of at least two colors；First dmd chip can receive the light beam of the first dichroscope transmission and to described first
Exported after the beam modulation of dichroscope transmission, the second dmd chip can receive the light beam of the first dichroscope reflection simultaneously
To being exported after the beam modulation of first dichroscope reflection.Because DMD provided in an embodiment of the present invention modulates imaging system
In the first dichroscope can reflect the light beam of at least two colors and transmit the light beam of at least one color, or reflex to
A kind of light beam of few color simultaneously transmits the light beam of at least two colors, so can pass through the first dichroic in the embodiment of the present invention
The light beam at least three kinds colors that mirror exports LASER Light Source is separated into monochromatic light, and because filter wheel is not used, is inciting somebody to action
When the light beam of LASER Light Source output is separated into monochromatic light, the light filter loss of other frequency ranges is not fallen, and then add wide light
Compose the utilization rate of light beam.In addition, compared to prior art, DMD modulation imaging systems provided in an embodiment of the present invention without using
Filter wheel, it is no longer necessary to control is synchronized to fluorescent wheel and filter wheel, therefore compared to prior art embodiment also
The control program of DMD modulation imaging systems can further be simplified.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram that a kind of DMD modulates imaging system in the prior art；
Fig. 2 is one of schematic diagram that DMD provided in an embodiment of the present invention modulates imaging system；
Fig. 3 is the two of the schematic diagram that DMD provided in an embodiment of the present invention modulates imaging system；
Fig. 4 is the three of the schematic diagram that DMD provided in an embodiment of the present invention modulates imaging system；
Fig. 5 is one of schematic diagram of LASER Light Source provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram of fluorescent wheel provided in an embodiment of the present invention；
Fig. 7 is the two of the schematic diagram of LASER Light Source provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It should be noted that for the ease of clearly describing the technical scheme of the embodiment of the present invention, in embodiments of the invention
In, employ the printed words such as " first ", " second " and function and the essentially identical identical entry of effect or similar item are made a distinction, ability
Field technique personnel are appreciated that the printed words such as " first ", " second " are not to be defined to quantity and execution order.
The embodiment provides a kind of DMD to modulate imaging system, shown in reference picture 2, DMD modulation imaging systems
Including：
LASER Light Source 21, the first dichroscope 22, the first dmd chip 23 and the 2nd DMD chips 24.
Wherein, LASER Light Source 21 is used for the light beam for exporting at least three kinds colors.Wherein, the light beam bag that LASER Light Source 21 exports
Include：Laser beam and/or fluorescent light beam.
Exemplary, the LASER Light Source 21 in the embodiment of the present invention can export the laser of multiple color, can also export
One-wavelength laser.
Optionally, the light beam of at least three kinds colors can include：Red beam, blue light beam and green beam.
Exemplary, the light beam of LASER Light Source output can include：Blue laser beams and blue laser beams produce
Green fluorescence light beam and red fluorescence light beam.
First dichroscope 22 is located in the light path of the light beam of the output of LASER Light Source 21, for reflecting at least two colors
Light beam and the light beam for transmiting at least one color, or the light beam of at least one color of reflection and the light of at least two colors of transmission
Beam.
Exemplary, the light beam exported below using LASER Light Source 21 is a kind of laser beam of color, the first color fluorescence
The operation principle of the first dichroscope 22 is illustrated exemplified by light beam and the second color fluorescence light beam.
When the reflection laser of the first dichroscope 22, reflection first color fluorescence and transmit second color fluorescence
When, laser and the first color fluorescence are propagated to the reflection direction of the first dichroscope 22, and the second color fluorescence is to the first dichroic
The transmission direction of mirror 22 is propagated；When the transmission laser of the first dichroscope 22, reflection first color fluorescence and transmit described the
During second colors fluorescence, the first color fluorescence is propagated to the reflection direction of the first dichroscope 22, laser and the second color fluorescence to
The transmission direction of first dichroscope 22 is propagated；That is the first dichroscope can separate to the light beam that LASER Light Source exports.
Exemplary, when the light beam of LASER Light Source output includes：When red beam, blue light beam and green beam, first
Dichroscope 22 can transmit red beam, reflection green light beam with transmitting blue light beam；Or reflection blue light beam, transmission are red
Color beam, reflection green light beam；Or transmitting blue light beam, reflection red light beam, transmission green beam；Or reflection blue light
Beam, reflection red light beam, transmission green beam.
First dmd chip 23 be used to receiving the light beam that first dichroscope 22 transmits and to the described 1st to
Exported after the beam modulation that Look mirror 22 transmits.
Second dmd chip 24 be used to receiving the light beam that first dichroscope 22 reflects and to the described 1st to
Exported after the beam modulation that Look mirror 22 reflects.
Exemplary, the modulation of the first dmd chip 23 and the second dmd chip 24 to light can be：Under the driving of electric current
Enter horizontal deflection within the specific limits, regulation enters the light quantity of camera lens, so that showing different colors on camera lens 25.
Optionally, shown in reference picture 2, the projection display equipment comprising above-mentioned DMD modulation imaging systems can also include：Mirror
First 25, the light that the first dmd chip 23 and the second dmd chip 24 export inputs camera lens 25 respectively, and camera lens 25 is according to the first DMD
The light and the light output image of second dmd chip 24 input that chip 23 inputs.
Specifically, camera lens can include multiple optical mirror slips, light and the institute of the input of the first dmd chip 23 are received in camera lens
After the light for stating the input of the second dmd chip 24, it is final the processing such as to be reflected, reflected to the light received by multiple optical mirror slips
Output image.
DMD provided in an embodiment of the present invention modulates imaging system, including：LASER Light Source, the first dichroscope, the first DMD
Chip and the second dmd chip, wherein LASER Light Source can export the light beam of at least three kinds colors, and the first dichroscope can be anti-
Penetrate the light beam of at least two colors and transmit the light beam of at least one color, or the light beam of at least one color of reflection and transmission
The light beam of at least two colors；First dmd chip can receive the light beam of the first dichroscope transmission and to described first
Exported after the beam modulation of dichroscope transmission, the second dmd chip can receive the light beam of the first dichroscope reflection simultaneously
To being exported after the beam modulation of first dichroscope reflection.Because DMD provided in an embodiment of the present invention modulates imaging system
In the first dichroscope can reflect the light beam of at least two colors and transmit the light beam of at least one color, or reflex to
A kind of light beam of few color simultaneously transmits the light beam of at least two colors, so can pass through the first dichroic in the embodiment of the present invention
The light beam at least three kinds colors that mirror exports LASER Light Source is separated into monochromatic light, and because filter wheel is not used, is inciting somebody to action
When the light beam of LASER Light Source output is separated into monochromatic light, the light filter loss of other frequency ranges is not fallen, and then add wide light
Compose the utilization rate of light beam.In addition, compared to prior art, DMD modulation imaging systems provided in an embodiment of the present invention without using
Filter wheel, it is no longer necessary to control is synchronized to fluorescent wheel and filter wheel, therefore compared to prior art embodiment also
The control program of DMD modulation imaging systems can further be simplified.
Optionally, shown in reference picture 3, the DMD modulation imaging system that above-described embodiment provides also includes：First total internal reflection
(English name：Total Internal Reflection, referred to as：TIR) the total internal reflection prism 27 of prism 26 and second.
First total internal reflection prism 26 is located in the light path of the light beam of first dichroscope 22 transmission, for inciting somebody to action
The light beam that first dichroscope 22 transmits inputs the first DMD chips 23；
Second total internal reflection prism 27 is located in the light path of the light beam of first dichroscope 22 reflection, for inciting somebody to action
The light beam that first dichroscope 22 reflects inputs the 2nd DMD chips 24.
Optionally, shown in reference picture 4, the DMD modulation imaging system that above-described embodiment provides also includes：Second dichroscope
28；
Second dichroscope 28 is located at the light path and described second of the light beam of first dmd chip 23 output
In the light path for the light beam that dmd chip 24 exports, for the light beam for exporting the first DMD chips 23 and the 2nd DMD cores
Exported after the light beam closing light that piece 24 exports.
Optionally, shown in reference picture 5, the LASER Light Source 21 for the DMD modulation imaging systems that above-described embodiment provides includes：Swash
Light device array 51, wavelength convert part 52, the dichroscope 54 of blue light loop 53 and the 3rd.
Wherein, laser array 51 is used for caused laser.
Specifically, laser array 51 includes at least one laser group, each laser group includes N number of laser (N
>=1), each of which laser group can produce a kind of laser of color.A laser is included with laser array in Fig. 5
Group, and the laser group includes illustrating exemplified by three lasers.
The wavelength convert part 52 is used to transmit the laser and produces fluorescence and fluorescence is anti-by the laser
It is incident upon the 3rd dichroscope 54.
Optionally, shown in reference picture 6, the wavelength convert part 52 in above-described embodiment is fluorescent wheel 60；
The fluorescent wheel 60 includes：Fluorescence area 61 and regional transmission 62；Fluorescence area 61 is irradiated by the laser to be produced
Raw fluorescence and by fluorescent reflection to the 3rd dichroscope 54；Regional transmission 62 transmits to irradiating the laser come.
Optionally, fluorescent wheel 60 can be by the reflective positioned at the fluorescence area by fluorescence caused by fluorescence area
Reflex to the 3rd dichroscope 54.Wherein, reflective can be formed by plating reflectance coating in any material, can also be adopted
Make to be formed of reflector plate.
Optionally, the fluorescence area 61 of fluorescent wheel 60 includes the fluorescent material of at least one color, and at least one color
Fluorescent material be located at the laser incidence side of fluorescent wheel 60.
Blue light loop 53 is used to receiving the laser that the wavelength convert part 52 transmits and by the wavelength convert part 52
The laser projection of transmission is to the 3rd dichroscope 54.
Exemplary, shown in reference picture 5, blue light loop 53 can be by 532 groups of multiple speculums 531 and multiple collimation lenses
Into, wherein, mirror lens 531 is used for the direction of propagation for changing the laser of the transmission of wavelength convert part 52, and collimation lens 532 is used
It is compressed in the dispersion angle of the laser to speculum reflection 531.
3rd dichroscope 54 transmits to the laser and to the fluorescent reflection, for by the laser and the fluorescence
Exported after closing light.
Optionally, shown in reference picture 7, the LASER Light Source 21 for the DMD modulation imaging systems that above-described embodiment provides includes：Swash
Light device array 71 and wavelength convert part 72.
The laser array 71 is used to produce laser；
The wavelength convert part 72 is used to transmit the laser and produced by the laser described in fluorescence and transmission
Fluorescence.
Compared to LASER Light Source shown in Fig. 5, LASER Light Source provided in an embodiment of the present invention does not need blue light loop by wavelength
The laser projection of converting member transmission does not need the 3rd dichroscope to carry out closing light to laser and fluorescence to the 3rd dichroscope
Processing, therefore the use provided in an embodiment of the present invention that optical mirror slip in LASER Light Source can be reduced, shorten light in LASER Light Source
Road transmission range, and then reduction and cost reduction beneficial to LASER Light Source volume.
Optionally, the wavelength convert part 72 in LASER Light Source shown in above-mentioned Fig. 7 can be fluorescent wheel；
The fluorescent wheel includes：Fluorescence area and regional transmission；The fluorescence area is produced glimmering by laser irradiation
Light simultaneously transmits the fluorescence；The regional transmission transmits to irradiating the laser come.
Fluorescent wheel provided in an embodiment of the present invention is differed only in fluorescent wheel 60 shown in above-mentioned Fig. 6, and the present invention is implemented
The fluorescent wheel that example provides is to Fluoroscopic caused by laser, and fluorescent wheel 60 shown in Fig. 6 is to fluorescent reflection caused by laser.I.e. originally
Fluorescent wheel in inventive embodiments is transmission-type fluorescent wheel, and fluorescent wheel 60 shown in Fig. 6 is reflective fluorescent wheel.Except above-mentioned difference
Outside, the explanation of fluorescent wheel shown in Fig. 6 can be quoted into the embodiment of the present invention to fluorescent wheel provided in an embodiment of the present invention
It is explained.
Further, the facula area that laser caused by usual laser array is formed is larger, and excitation wavelength is changed
It is smaller that device produces the hot spot that fluorescence needs.For example, the facula area that laser caused by laser array is formed is 60mm, and
The facula area that excitation wavelength conversion equipment produces fluorescence and needed is only 0.8mm, therefore is entered in laser caused by laser array
Penetrate before Wavelength converter, it is necessary to beam shaping be carried out to laser caused by laser array, to reduce laser array production
The area for the hot spot that raw laser is formed, meet requirement of the wavelength convert part to the luminous energy density of laser.Therefore, in laser
The area for the hot spot for also including being used to form laser caused by laser array between device array and Wavelength converter enters
The telescopic system that row reduces.Exemplary, telescopic system can be combined by multiple convex lens, concavees lens and formed.
Optionally, because when LASER Excited Fluorescence powder produces fluorescence, the direction of fluorescence is uncertain and dispersion angle
It is larger, and laser may also can have certain dispersion angle in communication process, therefore, shown in reference picture 5 or Fig. 7,
Collimation lens set 100 can be set to be compressed the dispersion angle of laser and fluorescence in the light path of laser and fluorescence, so as to subtract
The loss of small laser and fluorescence in communication process.
Further, because laser is high-energy light beam guiding, and thinner laser can be formed by beam shaping in optic path
Light beam, so that energy density is bigger, if the laser beam of energy density inequality enters DMD modulation imaging systems, on the one hand
It is likely to result in the excessive formation of local assault to burn, on the other hand can causes output image brightness irregularities.Therefore such as Fig. 5 or 7
Shown, DMD modulation imaging system provided in an embodiment of the present invention also includes：Even photo structure 29；
The even photo structure 29 is located on the laser of the LASER Light Source 21 output and the light path of fluorescence, described for homogenizing
The laser and fluorescence that LASER Light Source 21 exports.
Optionally, even photo structure 29 is specifically as follows：At least one of optical wand, fly's-eye lens, light cone.
Even photo structure 29 is provided with the laser and the light path of fluorescence that the embodiment of the present invention exports in LASER Light Source 11, therefore
Can to DMD modulate imaging system in laser beam homogenize, so as to avoid causing local assault it is excessive formation burn with
And the problem of output image brightness irregularities.
Yet another embodiment of the invention provides a kind of laser projection device, including the DMD modulation that any of the above-described embodiment provides
Imaging system.
The DMD modulation imaging systems of laser projection device provided in an embodiment of the present invention, including：LASER Light Source, the one or two
To Look mirror, the first dmd chip and the second dmd chip, wherein LASER Light Source can export the light beam of at least three kinds colors, and first
Dichroscope can reflect the light beam of at least two colors and transmit the light beam of at least one color, or at least one face of reflection
The light beam of color and the light beam for transmiting at least two colors；First dmd chip can receive the light of the first dichroscope transmission
Exported after beam and the beam modulation transmitted to first dichroscope, the second dmd chip can receive first dichroic
Exported after the light beam of mirror reflection and the beam modulation reflected first dichroscope.Due to provided in an embodiment of the present invention
The first dichroscope in DMD modulation imaging systems can reflect the light beam of at least two colors and transmit at least one color
Light beam, or the light beam of at least one color of reflection and the light beam of at least two colors of transmission, so can in the embodiment of the present invention
Monochromatic light is separated into the light beam at least three kinds colors for being exported LASER Light Source by the first dichroscope, and because is not used
Filter wheel, so when the light beam for exporting LASER Light Source is separated into monochromatic light, the light filter loss of other frequency ranges is not fallen,
And then add the utilization rate of broad-spectrum beam.In addition, compared to prior art, DMD provided in an embodiment of the present invention is modulated into
As system is without using filter wheel, it is no longer necessary to control is synchronized to fluorescent wheel and filter wheel, therefore compared to prior art
The embodiment of the present invention can also further simplify the control program of DMD modulation imaging systems.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (11)
1. a kind of digital micromirror elements DMD modulates imaging system, it is characterised in that including：LASER Light Source, the first dichroscope,
First dmd chip and the second dmd chip；
The LASER Light Source is used for the light beam for exporting at least three kinds colors, wherein, the light beam includes：Laser beam and/or glimmering
Light light beam；
First dichroscope is located in the light path of the light beam, for reflecting the light beam of at least two colors and transmiting at least
A kind of light beam of color, or the light beam of at least one color of reflection and the light beam of at least two colors of transmission；
First dmd chip is used to receive the light beam of the first dichroscope transmission and first dichroscope is transmitted
Beam modulation after export；
Second dmd chip is used to receive the light beam of the first dichroscope reflection and first dichroscope is reflected
Beam modulation after export.
2. DMD according to claim 1 modulates imaging system, it is characterised in that the DMD modulation imaging system is also wrapped
Include：First total internal reflection prism and the second total internal reflection prism；
First total internal reflection prism is located in the light path of the light beam of first dichroscope transmission, for by described first
The light beam of dichroscope transmission inputs first dmd chip；
Second total internal reflection prism is located in the light path of the light beam of first dichroscope reflection, for by described first
The light beam of dichroscope reflection inputs second dmd chip.
3. DMD according to claim 1 modulates imaging system, it is characterised in that the DMD modulation imaging system is also wrapped
Include：Second dichroscope；
Second dichroscope be located at first dmd chip output light beam light path and second dmd chip it is defeated
In the light path of the light beam gone out, the light beam exported for the light beam for exporting first dmd chip and second dmd chip closes
Exported after light.
4. DMD according to claim 1 modulates imaging system, it is characterised in that the LASER Light Source includes：Laser battle array
Row, wavelength convert part, blue light loop and the 3rd dichroscope；
The laser array is used to produce laser；
The wavelength convert part is used to transmit the laser and produces fluorescence and by the fluorescent reflection by the laser
To the 3rd dichroscope；
The blue light loop is used for what is received the laser of the wavelength convert part transmission and transmit the wavelength convert part
Laser projection is to the 3rd dichroscope；
3rd dichroscope transmits to the laser and to the fluorescent reflection, for the laser and the fluorescence to be closed
Exported after light.
5. DMD according to claim 4 modulates imaging system, it is characterised in that the wavelength convert part is fluorescent wheel；
The fluorescent wheel includes：Fluorescence area and regional transmission；The fluorescence area is irradiated by the laser produces fluorescence simultaneously
By the fluorescent reflection to the 3rd dichroscope；The regional transmission transmits to irradiating the laser come.
6. DMD according to claim 1 modulates imaging system, it is characterised in that the LASER Light Source includes：Laser battle array
Row and wavelength convert part；
The laser array is used to produce laser；
The wavelength convert part is used to transmit the laser and produces fluorescence and the transmission fluorescence by the laser.
7. DMD according to claim 6 modulates imaging system, it is characterised in that the wavelength convert part is fluorescent wheel；
The fluorescent wheel includes：Fluorescence area and regional transmission；The fluorescence area is irradiated by the laser produces fluorescence simultaneously
Transmit the fluorescence；The regional transmission transmits to irradiating the laser come.
8. the DMD modulation imaging systems according to claim any one of 4-7, it is characterised in that the DMD is modulated into as system
System also includes：Even photo structure；
The even photo structure is located on the laser of LASER Light Source output and the light path of fluorescence, for homogenizing the LASER Light Source
The laser and fluorescence of output.
9. DMD according to claim 8 modulates imaging system, it is characterised in that the even photo structure is optical wand, compound eye is saturating
At least one of mirror, light cone.
10. DMD according to claim 1 modulates imaging system, it is characterised in that the light beam of at least three kinds colors includes：
Red beam, blue light beam and green beam.
11. a kind of laser projection device, it is characterised in that be modulated into including the DMD described in claim any one of 1-10 as system
System.
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| CN201710807372.9A CN107765500A (en) | 2017-09-08 | 2017-09-08 | A kind of DMD modulation imaging systems and laser projection device |
| PCT/CN2018/079042 WO2019047499A1 (en) | 2017-09-08 | 2018-03-14 | Laser imaging system, laser projection device, and laser projection system |
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| CN201710807372.9A CN107765500A (en) | 2017-09-08 | 2017-09-08 | A kind of DMD modulation imaging systems and laser projection device |
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Applicant after: Hisense Visual Technology Co., Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Applicant before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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Application publication date: 20180306 |