CN110456603A - Projection display optical system - Google Patents
Projection display optical system Download PDFInfo
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- CN110456603A CN110456603A CN201910718768.5A CN201910718768A CN110456603A CN 110456603 A CN110456603 A CN 110456603A CN 201910718768 A CN201910718768 A CN 201910718768A CN 110456603 A CN110456603 A CN 110456603A
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Classifications
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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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
Abstract
The present invention is suitable for projection art, provides a kind of projection display optical system, comprising: light source module includes primaries and the incident light for exciting band of light for emitting；Modulation module respectively obtains the first modulation picture of corresponding primaries and the second modulation picture of corresponding excitation band of light for being modulated according to modulated signal to primaries and excitation band of light；And image receiver module, including phosphor powder layer；First modulation picture and the second modulation picture synchronization are incident on phosphor powder layer, excite wave band photostimulable phosphor layer；Since also there is corresponding gray value information after excitation wave band light modulation, the excitation intensity that different pixels are corresponded to after phosphor powder layer excitation is different, available reinforcement picture, using reinforce picture with normally show that being superimposed for picture improves display brightness, this is with for existing increasing light-source brightness and the raising anti-light performance two schemes of curtain, and brightness improvement effect is more preferably.
Description
Technical field
The invention belongs to projection art, in particular to a kind of projection display optical system.
Background technique
There are luminance shortage, imaging effect are bad to lead when current projector uses under the stronger environment of light
The problem of causing picture not see Chu, this is because compared with self luminous LCD TV or LED display, the original of Projection Display
Reason is that the light issued by curtain reflective projector is imaged, thus, it is used under Projection Display there are anti-light performances not strong, strong light
The bad problem of effect.Solution currently on the market is from the light-source brightness for increasing projector and to improve the anti-light performance of curtain
On set about, but the improvement of the two schemes is bad.
Summary of the invention
The purpose of the present invention is to provide a kind of projection display optical systems, it is intended to solve existing projector in Qiang Guanghuan
When being used under border the technical issues of luminance shortage.
The invention is realized in this way a kind of projection display optical system, comprising:
Light source module includes primaries and the incident light for exciting band of light for emitting；
Modulation module, for being modulated according to modulated signal to the primaries and the excitation band of light, respectively
Obtain corresponding to the first modulation picture of the primaries and the second modulation picture of the corresponding excitation band of light；And
Image receiver module, including phosphor powder layer；The first modulation picture and the second modulation picture synchronization are incident
On to the phosphor powder layer, the excitation band of light excites the phosphor powder layer.
In one embodiment, the projection display optical system further includes colour wheel, and the colour wheel includes along the circumferential direction
Three optical filters being continuously arranged, each optical filter are positioned to allow for wherein a shade in the primaries and described
Excitation band of light pass through, and three optical filters allow by the three primary colors in light it is different；The modulation
Module includes space optical modulator chip, and the space optical modulator chip is dmd chip or LCOS chip.
In one embodiment, the projection display optical system further includes colour wheel, and the colour wheel includes along the circumferential direction
Three optical filters being continuously arranged, each optical filter are positioned to allow for wherein a shade in the primaries and pass through,
And three optical filters allow by light it is different；The modulation module includes two spaces optical modulator chip,
In a space optical modulator chip be used to according to the modulated signal be sequentially modulated the primaries, wherein another sky
Between optical modulator chip be used to modulate the excitation band of light according to the modulated signal；The space optical modulator chip is DMD core
Piece or LCOS chip.
In one embodiment, the modulation module includes multiple modulators, and the projection display optical system further includes
Converging module and scan module, multiple modulators are for adjusting the excitation band of light according to the modulated signal
System, the converging module include multiple dichroic mirror, and the dichroic mirror is used to swash described in modulated multi beam
Send out that wave band photosynthesis is a branch of, the scan module is used for the light beam scanning by the excitation band of light of synthesis to obtain described the
Two modulation pictures.
In one embodiment, the modulator includes acousto-optic modulator or electrooptic modulator；The scan module includes
Multiple surface rotating mirror or microelectromechanical-systems galvanometer.
In one embodiment, the projection display optical system further includes colour wheel, and the colour wheel includes along the circumferential direction
Three optical filters being continuously arranged, each optical filter are positioned to allow for wherein a shade in the primaries and pass through,
And three optical filters allow by light it is different；The modulation module include further include space optical modulator chip,
The space optical modulator chip is used to be sequentially modulated the primaries according to the modulated signal；The space optical modulator chip
For dmd chip or LCOS chip.
In one embodiment, the projection display optical system further includes multiple dichronic mirrors, and multiple dichronic mirrors are used
In the separation primaries；The modulation module further includes three space optical modulator chips, each space light modulation core
Piece is used to modulate wherein a shade in the primaries according to the modulated signal；The converging module further includes light combination rib
Mirror, the light-combining prism are used for the modulation light beam synthesis of the primaries the first modulation picture.
In one embodiment, the space optical modulator chip is LCD chip；Or
The projection display system further includes multiple polarization spectroscopes, and multiple polarization spectroscopes are used for former by described three
Color is reflected towards the space optical modulator chip respectively, and the space optical modulator chip is LCOS chip.
In one embodiment, described image receiving module further includes reflective substrate layer, and the phosphor powder layer is set to described
On reflective substrate layer.
In one embodiment, described image receiving module further includes curtain bottom, and the reflective substrate layer is set to described
On curtain bottom.
The beneficial effect of projection display optical system provided by the invention is:
Increase in the optical path and an excitation band of light and the excitation band of light be modulated, it is modulated after excitation wave band
Light is incident on the image receiver module with phosphor powder layer, and excitated fluorescent powder layer obtains a reinforcement picture, utilizes reinforcement picture
Face and normal display picture are superimposed to improve display brightness, and the grey scale pixel value pair of the raising of brightness and normal display picture
It answers, this is with for existing increasing light-source brightness and the raising anti-light performance two schemes of curtain, and brightness improvement effect is more preferably.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the schematic diagram for the projection display optical system that first embodiment of the invention provides；
Fig. 2 is the schematic diagram for the projection display optical system that second embodiment of the invention provides；
Fig. 3 is the schematic diagram for the projection display optical system that third embodiment of the invention provides；
Fig. 4 is the schematic diagram for the projection display optical system that fourth embodiment of the invention provides；
Fig. 5 is the schematic diagram for the projection display optical system that fifth embodiment of the invention provides；
Fig. 6 is the structural schematic diagram of the image receiver module of projection display optical system provided in an embodiment of the present invention.
Meaning marked in the figure are as follows:
100 projection display optical systems；
1- light source module, 11- first light source component, 12- second light source component；
2- spectral module, 21- colour wheel, the first optical filter of 211-, the second optical filter of 212-, 213- third optical filter, 22- points
Look mirror, 23- polarization spectroscope；
3- modulation module, the space 31- optical modulator chip, 32- modulator；
4- converging module, 41- dichroic mirror, 42- light-combining prism；
5- scan module；
6- projection module；
7- polarization conversion module；
8- is as receiving module, 81- phosphor powder layer, 82- reflective substrate layer, 83- curtain bottom；
91- first modulates picture, and 92- second modulates picture, and 901- first modulates sprite, and 90- second modulates sprite,
903- third modulates sprite, and 99- shows picture.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
It should be noted that when component is referred to as " being fixed on " or " being set to " another component, it can directly or
It connects on another component.When a component is known as " being connected to " another component, it be can be directly or indirectly
It is connected on another component.The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right" is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of describing, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to this patent.Term " first ",
" second " is used merely to facilitate description purpose, is not understood to indicate or imply relative importance or implicitly indicates technical characteristic
Quantity.The meaning of " plurality " is two or more, unless otherwise specifically defined.
In order to illustrate technical solutions according to the invention, it is described in detail below in conjunction with specific accompanying drawings and embodiments.
Fig. 1 and Fig. 2 are please referred to, the embodiment of the present invention provides a kind of projection display optical system 100 comprising light source module
1, modulation module 3 and image receiver module 8.Wherein, light source module 1 is used to emit comprising primaries and excites band of light
Incident light；Modulation module 3 is used to be modulated primaries and excitation band of light according to modulated signal, respectively obtains corresponding three
Second modulation picture 92 of the first modulation picture 91 of primitive color light and corresponding excitation band of light, since the second modulation picture 92 is root
Modulate what excitation wave band light modulation obtained according to modulated signal, therefore, which also has corresponding gray value letter
Breath, that is, excitation band of light corresponds to different pixels with different light intensity after modulation；Image receiver module 8 includes fluorescent powder
Layer 81, first modulation picture 91 and second modulation picture 92 synchronize be incident on phosphor powder layer 81, by first modulation picture 91 can
To obtain the normal pictures for people's viewing, band of light is excited to carry out excitated fluorescent powder layer according to the light intensity of each pixel of correspondence
81, the light being inspired, which corresponds to different pixels also, has different light intensity, to obtain a reinforcement picture, the reinforcement picture
Face is superimposed with normal pictures, and whole display picture 99 can be made, which to show, has higher brightness.
Projection display optical system 100 provided in an embodiment of the present invention increases an excitation band of light and right in the optical path
The excitation band of light is modulated, it is modulated after excitation band of light be incident to the image receiver module 8 with phosphor powder layer 81
On, excitated fluorescent powder layer 81 obtains a reinforcement picture, display brightness is improved using being superimposed for picture and normal pictures is reinforced,
And the raising of brightness is corresponding with the grey scale pixel value of normal pictures, this and existing increasing light-source brightness and improves curtain light resistance
For energy two schemes, brightness improvement effect is more preferably.
Specifically, primaries are red (R) light, green (G) light and blue (B) light respectively.One pixel includes three sub-pixels,
It is red sub-pixel, green sub-pixels and blue subpixels respectively, the first modulation picture 91 includes the feux rouges ash of red sub-pixel
Angle value information, green light gray value information and blue light gray value information.
Exciting band of light should be the shorter light for being enough excitated fluorescent powder of wavelength.In the present embodiment, band of light is excited
It can be the ultraviolet light (UV) that wavelength is 10nm~400nm range.More specifically, it is 190nm that excitation band of light, which can be wavelength,
Short wave ultraviolet light (UVC) wavelength of~280nm is the medium wave ultraviolet light (UVB) or wavelength of 280nm~315nm
For the long wave ultraviolet light (UVA) of 315nm~400nm, it is of course also possible to be any wave band within the scope of 10nm~400nm.
Phosphor powder layer 81 may include at least one of red fluorescence powder, green emitting phosphor and blue colour fluorescent powder.It is corresponding
Ground, second modulation picture 92 in may include at least one of corresponding red sub-pixel, green sub-pixels and blue subpixels
Gray value information.For example, phosphor powder layer 81 is Red phosphor layer 81, include corresponding red sub- picture in the second modulation picture 92
The gray value information of element when the ultraviolet excitation Red phosphor layer 81, only obtains the gray value of a corresponding red sub-pixel
Picture is reinforced in the red of information, also can be improved the brightness that overall picture is shown.
Preferably, phosphor powder layer 81 is the white fluorescence bisque 81 that can issue white light.It specifically can be including red glimmering
The mixed fluorescent powder layer 81 of light powder, green emitting phosphor and blue colour fluorescent powder is also possible to include yellow fluorescent powder and blue-fluorescence
The mixed fluorescent powder layer 81 of powder.Here, any phosphor powder layer 81 that can be excited and obtain white light can be applied to this.The
Include whole gray value informations in corresponding red sub-pixel, green sub-pixels and blue subpixels in two modulation pictures 92.Such as
This, when the ultraviolet excitation white fluorescent bisque 81, the reinforcement picture of available white shows the brightness of picture 99 more
It is high.
Phosphor powder layer 81 can be coated individually, be formed in wall, cabinet face, mirror surface etc. on any available existing receiving plane.
The situation that this is suitable for the shift in position demand of some pairs of projection display optical systems 100 less and receiving plane nature is good
Under, such as receiving plane is more smooth and smooth.
Further, as shown in fig. 6, image receiver module 8 further includes reflective substrate layer 82, phosphor powder layer 81 is set to reflection
On substrate layer 82, for improving the reflectivity of the light ejected by fluorescent powder, to improve the ratio that light enters human eye.
In this way, can improve human eye to display picture 99 brightness impression by.It is not smooth enough and smooth that this can be directed to some receiving planes itself
In the case where use, pass through the reflective substrate layer 82, improve Projection Display effect.
Specifically, the material selection specular reflective material of reflective substrate layer 82, as the reflective substrate layer 82 can be glass
The metal material layers such as layer either aluminium foil layer, silver layer.Any material with high reflectance can be applied to this.
In addition, further, image receiver module 8 can also include curtain bottom 83, reflective substrate layer 82 is formed in this
On curtain bottom 83, which is combined into a moveable entirety for reflective substrate layer 82 and phosphor powder layer 81.This is suitable
For using in the case where image receiver module 8 may be needed and temporarily be removed, the use of the image receiver module 8 can as a result,
With more flexible and extensive.It is, of course, understood that curtain bottom 83 is not necessarily soft as common soft curtain,
Its non-soft curtain layer that can be plate construction etc..
Further, which further includes control module (not shown), is connected to modulation module
3, picture is shown for parsing each frame according to the vision signal inputted, and modulation module 3 is controlled according to parsed information
Modulation to primaries (together with ultraviolet light), to obtain picture signal corresponding with input signal.
Next the modulation optical path of the ultraviolet light is specifically described.Here two ways is provided to realize: one, ultraviolet light with
Primaries are synchronized in same optical path and are modulated, and two, ultraviolet light is synchronized according to modulated signal in another optical path and is adjusted
System.
First way, including first embodiment are described first, as shown in Figure 1.
Light source module 1 can be set to directly issue comprising the mixed light including ultraviolet light and visible light, also can be set
Being includes two light source assemblies, as shown in Figure 1, first light source component 11 is for issuing ultraviolet light, second light source component 12 is used for
It issues white light and either issues feux rouges, green light and green light respectively.Specifically, first light source component 11 may include at least one purple
Outer LED, second light source component 12 may include that at least one white light LEDs includes either at least one red-light LED, green light LED
And blue-ray LED.
The projection display optical system 100 further includes spectral module 2, setting light source module 1 and modulation module 3 it
Between, modulation is synchronized at least one of ultraviolet light and feux rouges, green light and blue light to be divided in same sub-light road.
Such as, in the first embodiment, feux rouges, green light and blue light are divided in same sub-light road with part ultraviolet light and synchronize tune
System.
In the present embodiment, modulation module 3 is used to be modulated to obtain to feux rouges and ultraviolet light corresponding red sub-pixel ash
First modulation sprite 901 of angle value information (is believed respectively with r, g, b to indicate to correspond to feux rouges, green light and blue light gray value in figure
Breath, indicates the corresponding gray value information of ultraviolet light with uv), similarly, green light and ultraviolet light are modulated to obtain corresponding green
Second modulation sprite 902 of pixel grey scale value information, and blue light and ultraviolet light are modulated to obtain the corresponding sub- picture of blue
The third of plain gray value information modulates sprite 903, the first modulation sprite 901 to the corresponding combination of third modulation sprite 903
Get up and be equal to the combination of above-mentioned first modulation picture 91 and the second modulation picture 92, as shown in Figure 1.Under this kind of mode, the
One modulation picture 91 and the second modulation picture 92 are spatially superimposed completely.
Further, which further includes projection module 6, the first modulation for being used to be superimposed
Picture 91 and the second modulation projection of picture 92 are amplified on phosphor powder layer 81, obtain the display picture 99 watched for human eye.
Specifically, in one embodiment, spectral module 2 includes colour wheel 21, is set continuously in the circumferential direction on colour wheel 21
There are the first optical filter 211, the second optical filter 212 and third optical filter 213, wherein the first optical filter 211 is dual band pass optical filtering
Piece allows ultraviolet light and feux rouges to pass through, and the second optical filter 212 is biobelt pass filter, and ultraviolet light and green light is allowed to pass through,
Third optical filter 213 is biobelt pass filter, and ultraviolet light and blue light is allowed to pass through.In the rotation process of colour wheel 21, feux rouges,
Green light and blue light pass sequentially through colour wheel 21, while ultraviolet light is continually by the colour wheel 21.
On this basis, modulation module 3 may include single space optical modulator chip 31, the single space optical modulator chip
31 are modulated feux rouges and ultraviolet light in first time period, are modulated in second time period to green light and ultraviolet light,
And green light and ultraviolet light are modulated within the third period.The first time period to the third period corresponds to a frame picture
The display time.In this way, the first modulation sprite 901 to third is modulated sprite by the visual persistence effect using human eye
903 one image frame of corresponding synthesis.
More specifically, the single space optical modulator chip 31 can be DMD (Digital Micromirror Device,
Digital Micromirror Device) chip either LCOS (Liquid Crystal on Silicon, liquid crystal on silicon) chip.The dmd chip
It can be made, be repeated no more of the prior art with LCOS chip.Pass through the feux rouges of colour wheel 21, green light, blue light and ultraviolet light
It is incident to dmd chip either LCOS chip, the dmd chip either LCOS chip is according to analytic signal in the corresponding period
It is interior that reflective modulation is carried out to corresponding light, it obtains corresponding first modulation sprite 901 to third and modulates sprite 903.
Next second of description, as shown, including following second to fourth embodiment.In those embodiments,
Ultraviolet light is modulated separately as an optical path, synthesize and projection is amplified on image receiver module 8, feux rouges, green light and indigo plant
Light is modulated as an optical path, synthesize and projection is amplified on phosphor powder layer 81.
Firstly, referring to Fig. 2, in a second embodiment, light source module 1 includes first light source component 11 and second light source group
Part 12, wherein first light source component 11 is for issuing ultraviolet light, and second light source component 12 is for issuing white light or issuing red
Light, green light and green light.Specifically, first light source component 11 may include at least one ultraviolet LED, and second light source component 12 can be with
It include either at least one red-light LED, green light LED and blue-ray LED including at least one white light LEDs.
Specifically, in this second embodiment, which further includes spectral module 2, be used for by
Feux rouges, green light and the blue light separation that second light source component 12 issues, make red (R) light, green (G) light and blue (B) light respectively enter tune
Molding block 3 is modulated.The ultraviolet light (UV) that first light source component 11 issues without the spectral module 2 but is directly entered tune
Molding block 3 is modulated.In the present embodiment, spectral module 2 include colour wheel 21, along the circumferential direction on continuously be equipped with red
Optical filter, green color filter and blue color filter allow feux rouges, green light and blue light to pass sequentially through in its rotation process.
Further, modulation module 3 include the first space optical modulator chip 31 and second space optical modulator chip 31, first
Space optical modulator chip 31 for being modulated feux rouges, green light and blue light respectively, to obtain comprising red sub-pixel, green
First modulation picture 91 of pixel and blue subpixels gray value information.Second space optical modulator chip 31 be used for ultraviolet light into
Row modulation, to obtain the second tune simultaneously comprising corresponding red sub-pixel, green sub-pixels and blue subpixels gray value information
Picture 92 processed.
First space optical modulator chip 31 can be DMD (Digital Micromirror Device, digital micromirror device
Part) chip either LCOS (Liquid Crystal on Silicon, liquid crystal on silicon) chip.The dmd chip and LCOS chip
It can be made, be repeated no more of the prior art.By the feux rouges, green light and blue light of colour wheel 21 be incident to dmd chip or
It is LCOS chip, the dmd chip either LCOS chip is according to analytic signal to feux rouges, green light and indigo plant within the corresponding period
Light successively carries out reflective modulation.
Second space optical modulator chip 31 is also possible to DMD (Digital Micromirror Device, digital micromirror device
Part) chip either LCOS (Liquid Crystal on Silicon, liquid crystal on silicon) chip.The dmd chip and LCOS chip
It can be made, be repeated no more of the prior art.Ultraviolet light is constantly incident to dmd chip either LCOS chip, the DMD
Chip either LCOS chip is according to the analytic signal (gray value of corresponding red sub-pixel, green sub-pixels and blue subpixels
Information) within the corresponding period reflective modulation successively is carried out to ultraviolet light.
In order to enable the first modulation picture 91 and the second modulation picture 92 can be same in such a way that each pixel is completely corresponding
Step output, in the present embodiment, the purpose that controller is connected to modulation module 3 is also resided in for controlling the first space light modulation core
The reflection direction of piece 31 and second space optical modulator chip 31 makes the first modulation picture 91 and the second modulation picture 92 enter projection
Its each pixel can correspond to superposition completely when module 6, and further, superimposed image frame can be by projection module 6
It is projected out.
Referring to Fig. 3, in the third embodiment, the modulation path of red (R) light, green (G) light and blue (B) light can refer to above-mentioned
Second embodiment, second light source component 12, colour wheel 21 and the first space optical modulator chip 31 are identical as above-mentioned second embodiment,
It repeats no more.
Unlike, ultraviolet light is modulated using laser scanning projection's subsystem.Specifically, first light source group
Part 11 includes at least one ultraviolet laser diode (Laser Diode, LD), for issuing ultraviolet laser.Preferably, can wrap
Include three ultraviolet laser diodes.Modulation module 3 further includes three modulators 32, respectively corresponds three ultraviolet laser diodes,
It is used to accordingly be modulated ultraviolet light according to the modulated signal of controller, to obtain respectively including corresponding red sub- picture
Second modulation picture 92 of the gray value information of element, green sub-pixels and blue subpixels.In a particular embodiment, modulator 32
It can be acousto-optic modulator 32 or electrooptic modulator 32.
Further, in the third embodiment, which further includes synthesis module, and setting exists
The optical path downstream of modulator 32, the ultraviolet laser beams for modulating multi beam synthesize a branch of.
Specifically, converging module 4 includes multiple dichroic mirror 41, corresponding three tune of multiple dichroic mirror 41
Device 32 processed is arranged, and is respectively used to the modulated ultraviolet laser reflection of three beams, and make it into a scan module 5, scans mould
Block 5 accordingly scans light beam to target direction, to obtain the second above-mentioned modulation picture 92.In this way, the first modulation picture 91
It into projection module 6 and can be superimposed, finally be projected on phosphor powder layer 81 jointly with the second modulation picture 92.First adjusts
The superposition of picture 91 processed and the second modulation picture 92 equally controls modulation module 3 by controller to realize.
Specifically, scan module 5 may include multiple surface rotating mirror or including MEMS (Microelectro Mechanical
Systems, MEMS) galvanometer, it repeats no more.
Referring to Fig. 4, in the fourth embodiment, the ultraviolet light modulation path of ultraviolet laser and 3rd embodiment phase in other words
Together, first light source component 11, modulator 32, scan module 5 are identical as above-mentioned 3rd embodiment, and converging module 4 includes multiple
Dichroic mirror 41, repeats no more.
Unlike, in the fourth embodiment, spectral module 2 includes multiple dichronic mirrors 22, and modulation module 3 includes multiple skies
Between optical modulator chip 31.Feux rouges, green light and blue light from second light source component 12 are incident in a mixed manner on dichronic mirror 22,
Obtain feux rouges optical path, green light optical path and blue light paths independently.Feux rouges is incident on a space optical modulator chip 31, should
Space optical modulator chip 31 is modulated feux rouges, to obtain the red sub-pixel gray value information on each frame picture, equally
Ground, green light are incident on another space optical modulator chip 31, obtain green sub-pixels gray value information on each frame picture, with
And blue light is incident on third space optical modulator chip 31, to obtain the green sub-pixels gray value on each frame picture.In
In the present embodiment, converging module 4 further includes light-combining prism 42, it is modulated after feux rouges, blue light and green light enter the light-combining prism
42 synthesis the first modulation pictures 91.
On this basis, the first modulation picture 91 and the second modulation picture 92 enter projection module 6 jointly, are finally projected in
On phosphor powder layer 81, display picture 99 is obtained.
In this embodiment, multiple space optical modulator chip 31 is LCD (Liquid Crystal Display) chip.
Referring to Fig. 5, in the 5th embodiment, the modulation system of a kind of feux rouges, green light and blue light is also provided.Ultraviolet light
Modulation system is identical as above-mentioned 3rd embodiment and fourth embodiment, repeats no more.
In the 5th embodiment, which further includes polarization conversion module 7, as shown in figure 5, its
Quantity can be one, be also possible to it is multiple, for feux rouges, green light and blue light from second light source component 12 to be polarized
Conversion, to obtain corresponding red polarised light, green polarized light and blue polarised light.
Firstly, feux rouges, green light and blue light are converted to corresponding polarised light by polarization conversion module 7.Spectral module 2 wraps
Multiple dichronic mirrors 22 and polarization spectroscope 23 are included, separates to be formed solely by the polarised light of feux rouges, green light and blue light by dichronic mirror 22
The polarised light of feux rouges, green light and blue light is reflexed to a space light modulation core by polarization spectroscope 23 by vertical optical path respectively
On piece 31, which carries out reflective modulation to feux rouges, green light and blue light.Then, by the red of reflection modulation
Light, green light and blue light are incident on light-combining prism 42, are synthesized and are obtained the first modulation picture 91.
Specifically in this embodiment, multiple space optical modulator chip 31 is LCOS chip.
In addition it is also necessary to explanation, in a second embodiment, the modulation system of ultraviolet light can also be retained, by feux rouges,
The modulation system of green light and blue light replaces with fourth embodiment and the mode of the 5th embodiment carries out, so as to obtain other two
A embodiment.That is, any can be in such a way that independent optical paths obtain the first modulation picture 91 and the second modulation picture 92
Applied to this.The generation of first modulation picture 91 and the second modulation picture 92 is repeated no more with reference to described in the various embodiments described above.
Certainly, Projection Display Optical devices provided in an embodiment of the present invention may also include shell (not shown) and power supply mould
Block (not shown), light source module 1, spectral module 2, modulation module 3, converging module 4, controller and scan module 5 etc. are all provided with
It is placed in shell.Projection module 6 can be partially protrude through shell setting.Power module is electrically connected with structure above-mentioned, and to those
Structure provides electric power to maintain its normal work.
Inside housings, the arrangement of each structure of projection display optical system 100 is can be realized the first modulation picture
91 and second modulation picture 92 be advisable.For example, the projection display optical system 100 of corresponding first embodiment, then first light source group
Part 11 and second light source component 12 can be arranged side by side.For second embodiment to the 5th embodiment, first light source component 11
It is provided separately with the needs of second light source component 12 to adapt to respective modulation path.
It should be noted that the influence in order to avoid ultraviolet light to each structure of projection display optical system 100, in
Power supply cabling, support construction and the shell in portion etc. it is any may by structure that ultraviolet lighting is mapped to etc. using anti-ultraviolet material or
Person is modified through uvioresistant, or is protected using measures such as coating uvioresistant coatings.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. projection display optical system characterized by comprising
Light source module includes primaries and the incident light for exciting band of light for emitting；
Modulation module is respectively obtained for being modulated according to modulated signal to the primaries and the excitation band of light
Second modulation picture of the first modulation picture of the corresponding primaries and the corresponding excitation band of light；And
Image receiver module, including phosphor powder layer；The first modulation picture and the second modulation picture synchronization are incident to institute
It states on phosphor powder layer, the excitation band of light excites the phosphor powder layer.
2. projection display optical system as described in claim 1, which is characterized in that the projection display optical system further includes
Colour wheel, the colour wheel include three optical filters being arranged continuously in the circumferential direction, and each optical filter is positioned to allow for described
Wherein a shade and the excitation band of light in primaries pass through, and three optical filters allow by described three
Light in primary colors is different；The modulation module includes space optical modulator chip, and the space optical modulator chip is dmd chip
Or LCOS chip.
3. projection display optical system as described in claim 1, which is characterized in that the projection display optical system further includes
Colour wheel, the colour wheel include three optical filters being arranged continuously in the circumferential direction, and each optical filter is positioned to allow for described
Wherein a shade in primaries passes through, and three optical filters allow by light it is different；The modulation mould
Block includes two spaces optical modulator chip, wherein a space optical modulator chip according to the modulated signal for being sequentially modulated
The primaries, wherein another space optical modulator chip is used to modulate the excitation wave band according to the modulated signal
Light；The space optical modulator chip is dmd chip or LCOS chip.
4. projection display optical system as described in claim 1, which is characterized in that the modulation module includes multiple modulation
Device, the projection display optical system further include converging module and scan module, and multiple modulators are used for according to the tune
Signal processed is modulated the excitation band of light, and the converging module includes multiple dichroic mirror, and the dichroic is anti-
Mirror is penetrated for excitation wave band photosynthesis described in modulated multi beam is a branch of, the scan module is used for the excitation that will be synthesized
The light beam scanning of band of light is to obtain the second modulation picture.
5. projection display optical system as claimed in claim 4, which is characterized in that the modulator include acousto-optic modulator or
Electrooptic modulator；The scan module includes multiple surface rotating mirror or microelectromechanical-systems galvanometer.
6. projection display optical system as claimed in claim 4, which is characterized in that the projection display optical system further includes
Colour wheel, the colour wheel include three optical filters being arranged continuously in the circumferential direction, and each optical filter is positioned to allow for described
Wherein a shade in primaries passes through, and three optical filters allow by light it is different；The modulation mould
Including further including space optical modulator chip, the space optical modulator chip is used to be sequentially modulated according to the modulated signal described block
Primaries；The space optical modulator chip is dmd chip or LCOS chip.
7. projection display optical system as claimed in claim 4, which is characterized in that the projection display optical system further includes
Multiple dichronic mirrors, multiple dichronic mirrors are for separating the primaries；The modulation module further includes three spatial light tune
Coremaking piece, each space optical modulator chip are wherein of the same colour in the primaries for being modulated according to the modulated signal
Light；The converging module further includes light-combining prism, and the light-combining prism is used to the modulation light beam of the primaries synthesizing institute
State the first modulation picture.
8. projection display optical system as claimed in claim 7, which is characterized in that the space optical modulator chip is LCD core
Piece；Or
The projection display system further includes multiple polarization spectroscopes, and multiple polarization spectroscopes are used for the three primary colors point
It is not reflected towards the space optical modulator chip, the space optical modulator chip is LCOS chip.
9. such as projection display optical system described in any item of the claim 1 to 8, which is characterized in that described image receives mould
Block further includes reflective substrate layer, and the phosphor powder layer is set on the reflective substrate layer.
10. projection display optical system as claimed in claim 9, which is characterized in that described image receiving module further includes curtain
Cloth bottom, the reflective substrate layer are set on the curtain bottom.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910718768.5A CN110456603A (en) | 2019-08-05 | 2019-08-05 | Projection display optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910718768.5A CN110456603A (en) | 2019-08-05 | 2019-08-05 | Projection display optical system |
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| CN110456603A true CN110456603A (en) | 2019-11-15 |
Family
ID=68483036
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910718768.5A Pending CN110456603A (en) | 2019-08-05 | 2019-08-05 | Projection display optical system |
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| CN113467163A (en) * | 2021-07-29 | 2021-10-01 | 中国科学院长春光学精密机械与物理研究所 | Projection display system and display method based on MicroLED and fluorescent screen |
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