CN108628070A - A kind of display system - Google Patents
A kind of display system Download PDFInfo
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- CN108628070A CN108628070A CN201710176388.4A CN201710176388A CN108628070A CN 108628070 A CN108628070 A CN 108628070A CN 201710176388 A CN201710176388 A CN 201710176388A CN 108628070 A CN108628070 A CN 108628070A
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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]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
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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
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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
- H04N9/3167—Modulator illumination systems for polarizing the light beam
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a kind of display system, which includes：Light-source system, for sending out high-strength beam and low-intensity light beam；First optical modulator, for modulating high-strength beam according to the high-order image data of image to be displayed；Second optical modulator, for modulating low-intensity light beam according to low level image data；High-order image data and low level image data from pre-determined bit segmentation image data by obtaining；The intensity of high-strength beam is relative to the multiple of the intensity of low-intensity light beam：Multiple of the quantity of one unit value of high-order image data end position relative to the quantity of a unit value of low level image data end position；Combined optical system carries out closing light, to obtain the light beam of image to be displayed for that will modulate obtained image light.By the above-mentioned means, present invention reduces the distances from optical modulator to screen, while avoiding stray light or light loss and light caused by gap between pixel and passing twice through the loss superposition of optical modulator.
Description
Technical field
The present invention relates to display technology fields, more particularly to a kind of display system.
Background technology
Promotion with consumer to the pursuit of video quality, projection, television manufacturer are constantly by the display of display device
It can be gradually increased.Common, the effect of display device mainly embodies in terms of two, is on the one hand resolution ratio, 4K, 8K gradually at
For mainstream；On the other hand it is contrast, display device manufacturer attempts to improve the maximum brightness of display device, while reducing display dress
The minimum brightness set obtains luminance contrast as big as possible.In addition, those skilled in that art will also photography, camera shooting
In HDR（High Dynamic Range, high dynamic range）Concept introduces display field, it is intended to can by extending display device
The gray number of display embodying the contrast detail of image, while enabling display equipment by HDR image, video lossless
Broadcasting is shown.
Two optical modulators are usually together in series by the display device of the prior art, and the first optical modulator is according to being shown
Image to be displayed data the source light that light source emits is modulated, with obtain image light corresponding with image to be displayed data and
Non-image light, wherein the image light that the second optical modulator is further emitted according to the first optical modulator of image to be displayed data pair
It is modulated, to obtain the display image of high dynamic range.In the prior art, it needs the figure of the first optical modulator exit facet
As light is imaged onto the plane of incidence of the second optical modulator, optical path length is not only increased, and possibly can not precisely align, caused
Light loss is generated between gap between pixel and pixel；In addition, the efficiency of optical modulator is the product of two optical modulator efficiency,
That is η2, wherein η is optical modulator efficiency, reduces light source maximum brightness.In addition, by two concatenated technical sides of optical modulator
Case is not suitable for DMD（Digital Micromirro Device, digital micromirror device）It is this kind of by control emergent light time ratio
Example controls the spatial light modulator of gray scale.To sum up, connecting two optical modulators in the prior art to obtain high dynamic range
The display image enclosed there is a problem of many.
Invention content
The present invention provides a kind of display system, and two optical modulators of series connection can be avoided to obtain the display of high dynamic range
Some problems caused by image.
One aspect of the present invention is：A kind of display system is provided, including：Light-source system, for sending out height
Intensity light beam and low-intensity light beam；First optical modulator, for modulating the height according to the high-order image data of image to be displayed
Intensity light beam；Second optical modulator, for modulating the low-intensity light beam according to the low level image data of the image to be displayed；
The high position image data and the low level image data are obtained by dividing the image data of the image to be displayed from pre-determined bit
It arrives；The intensity of the high-strength beam is equal to relative to the multiple of the intensity of the low-intensity light beam：The high position image data
The number represented by a unit value of the quantity relative to low level image data end position represented by one unit value of last position
The multiple of amount；Combined optical system, the image light edge for obtaining first optical modulator and second light modulator modulates
Closing light light path carries out closing light, to obtain the light beam for showing the image to be displayed.
Wherein, light-source system includes：
High-intensity light source, for sending out the high-strength beam；
Low intensity light source, for sending out the low-intensity light beam.
Wherein, light-source system includes：
Light source, for sending out source light；
Polarization adjuster, the source light are incident to the polarization adjuster, and the polarization adjuster is used for the one of incident light
Part is adjusted to the source light of the first polarization state, and remainder is adjusted to the source light of the second polarization state, wherein described first
The intensity of the source light of polarization state is equal to relative to the multiple of the intensity of the source light of second polarization state：The high-strength beam
Multiple of the intensity relative to the intensity of the low-intensity light beam, and the source light of first polarization state and second polarization state
The polarization direction of source light is mutually perpendicular to；
First polarizing film, for the source light of first polarization state in the light beam after adjusting the polarization adjuster and described
The source light of second polarization state is separated into the outgoing of two-way light path；
First optical modulator is located in the light path of the source light of first polarization state, and second optical modulator is located at described
In the light path of the source light of second polarization state.
Wherein, the source light of the first polarization state described in the first light modulator modulates obtains the image light of the second polarization state, described
The image light of second polarization state is emitted to first polarizing film；
The source light of second polarization state described in second light modulator modulates obtains the image light of the first polarization state, and described first partially
The image light of polarization state is emitted to first polarizing film；
First polarizing film is as the combined optical system, and first polarizing film is by the image light of first polarization state and institute
The image light for stating the second polarization state carries out closing light along the closing light light path.
Wherein, the source light of the first polarization state described in the first light modulator modulates obtains the non-image light of the first polarization state, institute
The source light for stating the second polarization state described in the second light modulator modulates obtains the non-image light of the second polarization state, first polarization state
Non-image light and the non-image light of second polarization state be also emitted to first polarizing film, the first polarizing film guiding
The non-image light of the image light of first polarization state and second polarization state returns to the light after the polarization adjuster is adjusted
Beam is incident to the light incident side of first polarizing film.
Wherein, the first polarizing film is in the characteristic of the light of the first polarization state with reflection and is in second partially with transmission
The characteristic of the light of polarization state；Alternatively,
First polarizing film is in the characteristic of the light of the second polarization state with reflection and is in the first polarization state with transmission
Light characteristic.
Wherein, the source light of the first polarization state described in the first light modulator modulates obtains the image light of third polarization state；
The source light of second polarization state described in second light modulator modulates obtains the image light of the 4th polarization state；
The combined optical system includes the image of the second polarizing film, the image light of the third polarization state and the 4th polarization state
Light is emitted to second polarizing film；Second polarizing film is by the image light of the third polarization state and the 4th polarization state
Image light along the closing light light path carry out closing light；The image light of the image light of the third polarization state and the 4th polarization state
Polarization direction be mutually perpendicular to.
Wherein, the image light of third polarization state is identical as the polarization direction of source light of the first polarization state or mutually hangs down
Directly.
Wherein, the source light of the first polarization state described in the first light modulator modulates obtains the non-image light of the 4th polarization state；
The source light of second polarization state described in second light modulator modulates obtains the non-image light of third polarization state；
The non-image light of the third polarization state and the non-image light of the 4th polarization state are emitted to second polarizing film；
Second polarizing film is by the non-image light of the third polarization state from the non-image light of the 4th polarization state along different
Closing light is carried out in the light path of the closing light light path.
Wherein, the second polarizing film is in the characteristic of the light of third polarization state with reflection and is in the 4th partially with transmission
The characteristic of the light of polarization state；Alternatively, second polarizing film is in the characteristic of the light of the 4th polarization state with reflection and with thoroughly
Penetrate the characteristic of the light in third polarization state.
Wherein, further include：
Retracting device, the non-image light of the third polarization state for synthesizing second polarizing film are polarized with the described 4th
The closing light of the non-image light of state is guided to the polarization adjuster, and the closing light is together with the source light by the light polarization modulator
It adjusts to be recycled.
Wherein, retracting device includes reflection subassembly, third polarizing film, the first polarization conversion device and the second polarization conversion member
Part；
The reflection subassembly is used for the conjunction of the non-image light of the third polarization state and the non-image light of the 4th polarization state
Light is guided to the third polarizing film；
First polarization conversion device is used to be converted to the source light that the light source is sent out the source light of the 5th polarization state, and described the
Two polarization conversion devices are used for the closing light of the non-image light of the third polarization state and the non-image light of the 4th polarization state
Be converted to the recycling light of the 6th polarization state；
After the source light of 5th polarization state and the recycling light of the 6th polarization state are emitted to the third polarizing film, described
The recycling light of the source light of 5th polarization state and the 6th polarization state is carried out polarization closing light, obtained conjunction by three polarizing films
Light is emitted to the polarization adjuster；
The polarization adjuster adjusts the source light that the closing light obtains the source light and second polarization state of first polarization state.
Wherein, the retracting device includes reflection subassembly and region light splitting piece, and the region light splitting piece includes first area
And second area, wherein；
The reflection subassembly is used for the conjunction of the non-image light of the third polarization state and the non-image light of the 4th polarization state
Light is guided to the region light splitting piece, and most of illumination of the closing light is incident upon the first area of the region light splitting piece, described
The most of illumination for the source light that light source is sent out is incident upon the second area of the region light splitting piece, the region light splitting piece by the two into
Row geometry closing light, obtained closing light are emitted to the polarization adjuster；
The polarization adjuster adjusts the source light that the closing light obtains the source light and second polarization state of first polarization state.
The beneficial effects of the invention are as follows：The case where being different from the prior art, the present invention provide a kind of display system, including light
Source system, the first optical modulator, the second optical modulator and combined optical system.Wherein, light-source system is for sending out high-strength beam
With low-intensity light beam, the first optical modulator be used for according to the high-order image data of image to be displayed modulate high-strength beam, second
Optical modulator is used to modulate low-intensity light beam, high-order image data and low level image according to the low level image data of image to be displayed
Data are obtained by the image data from pre-determined bit segmentation image to be displayed, and the intensity of high-strength beam is relative to low-intensity light beam
The multiple of intensity be equal to：Quantity represented by one unit value of high-order image data end position is relative to low level image data end
The multiple of quantity represented by one unit value of position, combined optical system are used for the first optical modulator and the second light modulator modulates
Obtained image light carries out closing light along closing light light path, to obtain the light beam for showing image to be displayed.Therefore, the present invention passes through
The high-order image data of image to be displayed and low level image data are modulated by two optical modulators respectively simultaneously, then will modulation
Good image light progress closing light obtains the light beam of image to be displayed and obtains the display image of high dynamic range, can avoid one
The image light of a optical modulator is imaged onto in another optical modulator, so as to shorten the distance from optical modulator to screen, together
When the pixel brought of alignment error when avoiding the series connection of two optical modulators between stray light or light loss caused by gap and
Light passes twice through the loss superposition of optical modulator.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of display system provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another display system provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another display system provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another display system provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another display system provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another display system provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of region light splitting piece shown in fig. 6；
Fig. 8 is the structural schematic diagram of another display system provided in an embodiment of the present invention.
Specific implementation mode
Referring to Fig. 1, Fig. 1 is a kind of structural schematic diagram of display system provided in an embodiment of the present invention.As shown in Figure 1,
The display system 10 of the present invention includes light-source system 11, optical modulator 12a and 12b and combined optical system 13.
Wherein, light-source system 11 is for sending out high-strength beam and low-intensity light beam.
In the present embodiment, light-source system 11 includes two light sources of high-intensity light source 11a and low intensity light source 11b.Wherein, high
Intensity lamp sources 11a is for sending out high-strength beam.Low intensity light source 11b is for sending out low-intensity light beam.
Optical modulator 12a is used to modulate high-strength beam according to the high-order image data of image to be displayed.Optical modulator 12b
For modulating low-intensity light beam according to the low level image data of image to be displayed.
High-order image data and low level image data are obtained by the image data from pre-determined bit segmentation image to be displayed.And
And the intensity of high-strength beam is equal to relative to the multiple of the intensity of low-intensity light beam：One unit of high-order image data end position
The multiple of quantity represented by a unit value of the represented quantity of value relative to low level image data end position.
If image data to be shown is n shared, and it is indicated using binary system, is classified as n=na+nb, height
Position is na, and low level is nb.The intensity for the high-strength beam that high-intensity light source 11a is sent out is that low intensity light source 11b is sent out
The 2 of the intensity of low-intensity light beamnbTimes.
For example, image data to be shown is 8, and by first 5 as high-order image data, latter 3 are used as low level
Image data.The intensity for the high-strength beam that so high-intensity light source 11a is sent out is the low intensity light that low intensity light source 11b is sent out
The 2 of the intensity of beam3Times.That is the intensity of high-strength beam and the ratio of the intensity of low-intensity light beam is 8:1.
Example above is accepted, when optical modulator 12a modulates high-strength beam, if the image gray-scale level of the first image data
The high-order image data of value is 11111, that is, has reached the maximum value of 5 bits, then optical modulator 12a is according to the picture number
Image light according to modulation is that it modulates the attainable most light of high-strength beam institute.For example, when optical modulator 12a is DMD, it is micro-
Mirror unit is standard-sized sheet within the modulation period of the image data, and high-strength beam 100% is converted to image light.If second
The high-order image data of the image gray-scale level value of image data is 1, that is, has reached the minimum value of 5 bits, then optical modulator
The brightness ratio of the image light for the first image data that 12a is modulated and the image light of the second image data should be 31：1.
Similar, when optical modulator 12b modulates low-intensity light beam, if the low level of the image gray-scale level value of the first image data
Image data is 111, that is, has reached the maximum value of 3 bits, then the figure that optical modulator 12b is modulated according to the image data
As light should be that it modulates the attainable most light of low-intensity light beam institute.For example, when optical modulator 12b is DMD, micro mirror unit
It is standard-sized sheet within the modulation period of the pixel, low-intensity light beam 100% is converted into image light.If the second image data
The low level image data of image gray-scale level value is 1, that is, has reached the minimum value of 3 bits, then optical modulator 12b is modulated
The brightness ratio of the image light of the first image data arrived and the image light of the second image data should be 7：1.
Therefore, the image light that the present invention obtains after being modulated respectively to high-strength beam and low-intensity light beam meets institute
The light beam needed for high-order image data and low level image data that need to be shown.
The image light that combined optical system 3 is used to modulate optical modulator 12a and optical modulator 12b is carried out along closing light light path
Closing light, to obtain the light beam for showing image to be displayed.Specifically, being to passing through optical modulator 12a and optical modulator 12b tune
Image light after system carries out polarization closing light, to obtain the light beam of image to be displayed.
It should be understood that in the present embodiment, optical modulator 12a and 12b respectively adjust high-strength beam and low-intensity light beam
When processed, it will non-image light is further generated, and image light is for imaging, non-image light cannot be used for imaging.Cause
This, the image light that the combined optical system 13 of the present embodiment only modulates optical modulator 12a and optical modulator 12b is along closing light light path
Carry out closing light.
Therefore, the light-source system 11 of the present embodiment is sent out high-strength beam and low-intensity light beam while difference is respectively enterd
Optical modulator in, respectively obtain two image lights by different light regulator modulation.It thus avoids a light modulation
The image light of device is imaged onto in another optical modulator, shortens the distance from optical modulator to screen, while avoiding two
Stray light or light loss and light caused by gap pass twice through light between the pixel that alignment error when optical modulator is connected is brought
The loss of modulator is superimposed（It is equivalent to efficiency multiplication）.
In addition, two optical modulators can the independent modulation for carrying out light beam without being influenced each other, be not only restricted to non-DMD
Optical modulator selection.
In the present embodiment, optical modulator 12a and optical modulator 12b are LCD (Liquid Crystal Display, liquid
Crystal display).In other embodiments, optical modulator 12a and optical modulator 12b can also be LCOS（Liquid Crystal
On Silicon, liquid crystal on silicon）Or DMD.Alternatively, optical modulator 12a and optical modulator 12b is different type, such as wherein one
A optical modulator is LCOS, another optical modulator is LCD or one of optical modulator is LCD, another optical modulator
For DMD.It should be understood that the type of optical modulator can also be other, details are not described herein.
Referring to Fig. 2, Fig. 2 is the structural schematic diagram of another display system provided in an embodiment of the present invention.Such as Fig. 2 institutes
Show, the display system 20 of the present embodiment and previously described display system 10 difference lies in：The display system 20 of the present embodiment
Light-source system 21 only with a light source 21a, for sending out source light.Since the present embodiment is only with a light source 21a,
The volume for reducing display system 20 is conducive to the design of radiator structure.
Further, the light-source system 21 of the present embodiment further includes polarization adjuster 24 and polarizing film 23.Light source 21a is sent out
Source light be incident to polarization adjuster 24, polarization adjuster 24 is used to a part for incident light being adjusted to the first polarization state
Source light S0, and remainder is adjusted to the source light P0 of the second polarization state.Wherein, the intensity phase of the source light S0 of the first polarization state
The multiple of the intensity of the source light P0 of second polarization state is equal to：Intensity of the intensity of high-strength beam relative to low-intensity light beam
Multiple, and the polarization direction of the source light P0 of the source light S0 and the second polarization state of the first polarization state is mutually perpendicular to.That is, partially
The adjuster 24 that shakes adjusts incident source according to the relationship of the high-order image data of image to be displayed data and low level image data
Light so that the intensity of the source light S0 for the first polarization state for adjusting out relative to the source light P0 of the second polarization state intensity with it is required
The high-order image data and the light intensity needed for low level image data of display match.
Polarizing film 23 is used for the source light S0 and second of the first polarization state in the light beam after the adjusting of polarization adjuster 24 is inclined
The source light P0 of polarization state is separated into the outgoing of two-way light path.Wherein, optical modulator 22a is located at the light path of the source light S0 of the first polarization state
On, to be modulated to the source light S0 of the first polarization state, obtain the image light p1 of the second polarization state.Optical modulator 22b is located at second partially
In the light path of the source light P0 of polarization state, to be modulated to the source light P0 of the second polarization state, the image light S1 of the first polarization state is obtained.
The image light p1 of second polarization state and the image light S1 of the first polarization state are emitted to polarizing film 23.23 conduct of polarizing film
The image light S1 of the first polarization state and image light p1 of the second polarization state is carried out closing light by combined optical system along closing light light path.
Further, the source light S0 of the first polarization state of optical modulator 22a modulation obtains the non-image light S2 of the first polarization state,
The source light P0 that optical modulator 2b modulates the second polarization state obtains the non-image light P2 of the second polarization state, the first polarization state it is non-image
The light S2 and non-image light P2 of the second polarization state is also emitted to polarizing film 23, and polarizing film 23 guides the non-image light of the first polarization state
The S2 and non-image light P2 of the second polarization state returns to the light beam after polarization adjuster 24 is adjusted and is incident to entering for the first polarizing film 23
Penetrate side.
In the present embodiment, characteristic of the polarizing film 23 with light of the reflection in the first polarization state and it is in the with transmission
The characteristic of the light of two polarization states.As shown in Fig. 2, the image light S1 and first of 23 reflection sources light S0 of polarizing film, the first polarization state
The non-image light S2 of polarization state, and the non-image light of the image light P1 of transmission source light P0, the first polarization state and the first polarization state
P2。
In other embodiments, polarizing film 23 may be arranged as with reflection in the second polarization state light characteristic with
And the characteristic of the light of the first polarization state is in transmission, shown in Fig. 3.23 reflection sources light P0 of polarizing film, second
The image light P1 of the polarization state and non-image light P2 of the second polarization state, and the image light S1 of transmission source light S0, the first polarization state
And first polarization state non-image light S2.
In the present embodiment, light combiner 23 had not only acted as light splitting effect, but also acted as closing light effect, was conducive to the small of volume
Type.
In the present embodiment, polarization adjuster 24 can be controlled, it is made only to be emitted the light of single polarization state, so that this is aobvious
Show that system can not only play LDR image, but also HDR image can be played, can switch over therebetween have stronger suitable
Distribution type.
The optical modulator of the present embodiment is preferably LCOS patterns, but can also be changed to LCD mode, it is only necessary to be adjusted in polarization
Spectrophotometric unit is set in the rear light path of device 24, is respectively directed to the plane of incidence of the optical modulator of two LCD modes.
Referring to Fig. 4, Fig. 4 is the structural schematic diagram of another display system provided in an embodiment of the present invention.Such as Fig. 4 institutes
Show, the display system 40 of the present embodiment and previously described display system 20 difference lies in：The combined optical system packet of the present embodiment
Polarizing film 43 and 45 is included, display system 40 further includes retracting device 46.
In the present embodiment, the source light S0 of the source light P0 of the first polarization state and the second polarization state are divided into two-way by polarizing film 43
Light, wherein the source light P0 of the first polarization state enters optical modulator 42a, and the source light S0 of the second polarization state passes through 412 He of speculum
Enter optical modulator 42b after 413 reflections.
The source light P0 that optical modulator 42a modulates the first polarization state obtains the image light S1 of third polarization state.Optical modulator 42b
The source light S0 for modulating the second polarization state obtains the image light P1 of the 4th polarization state.The image light S1 of third polarization state and the 4th is inclined
The image light P1 of polarization state is emitted to polarizing film 45, and polarizing film 45 is by the image of the image light S1 and the 4th polarization state of third polarization state
Light P1 carries out closing light along closing light light path.The polarization direction phase of the image light S1 of third polarization state and the image light P1 of the 4th polarization state
It is mutually vertical.The image light S1 of third polarization state is identical as the polarization direction of source light P0 of the first polarization state or is mutually perpendicular to.
Further, the source light P0 of the first polarization state of optical modulator 42a modulation obtains the non-image light P2 of the 4th polarization state.
The source light S0 that optical modulator 42b modulates the second polarization state obtains the non-image light S2 of third polarization state.The non-figure of third polarization state
As the non-image light P2 of light S2 and the 4th polarization state are emitted to polarizing film 45.Polarizing film 45 is by the non-image light S2 of third polarization state
With the non-image light P2 of the 4th polarization state closing light is carried out along the light path for being different from closing light light path.As shown in figure 4, third polarization state
Non-image light S2 and the non-image light P2 of the 4th polarization state are along the direction closing light with the light path of the non-image light S2 of third polarization state.
And the image light S1 of third polarization state and the image light P1 of the 4th polarization state are along the conjunction vertically with the image light P1 of the 4th polarization state
Light light path carries out closing light.
In the present embodiment, characteristic of the polarizing film 45 with light of the reflection in the 4th polarization state and it is in the with transmission
The characteristic of the light of three polarization states.As shown in figure 4, polarizing film 45 reflects the image light P1 and non-image light P2 of the 4th polarization state, thoroughly
Penetrate the image light S1 and non-image light S2 of third polarization state.
In other embodiments, polarizing film 45 may be arranged as with reflection in third polarization state light characteristic with
And the characteristic of the light of the 4th polarization state is in transmission.As shown in figure 5, the reflection image light S1 of third polarization state and non-image
Light S2 transmits the image light P1 and non-image light P2 of the 4th polarization state.
It is worth noting that, the source light optical modulator as shown in fig. 4 of optical modulator 42a shown in fig. 5 and 42b modulation
The source light of 42a and 42b modulation is just opposite.
Referring again to Fig. 4, the non-image light S2 of third polarization state that retracting device 46 is used to synthesize polarizing film 45 and the
The closing light of the non-image light P2 of four polarization states is guided to polarization adjuster 44, and closing light is adjusted together with the light of source by light polarization modulator 44
To be recycled.
Specifically, retracting device 46 includes reflection subassembly 48 and 49, polarizing film 411, polarization conversion device 47 and optical rotation
Change element 410.Wherein, reflection subassembly 48 and 49 is used for the non-image of the non-image light S2 of third polarization state and the 4th polarization state
The closing light of light P2 is guided to polarizing film 411.Polarization conversion device 47 is used to the source light S2 that light source 41a is sent out being converted to the 5th partially
The source light S4 of polarization state.Polarization conversion device 410 is used for the non-image of the non-image light S2 of third polarization state and the 4th polarization state
The closing light of light P2 is converted to the recycling light S5 of the 6th polarization state.
The source light S4 of the 5th polarization state and recycling light S5 of the 6th polarization state is emitted to polarizing film 411, and polarizing film 411 is by
The source light S4 of the five polarization states and recycling light S5 of the 6th polarization state carries out polarization closing light, and obtained closing light is emitted to polarization and adjusts
Device 44.
Polarization adjuster 44 adjusts closing light and obtains the source light S0 of the first polarization state and the source light P0 of the second polarization state.
To save cost, the present embodiment can also only recycle an optical modulator, such as the non-image light of optical modulator 2a,
Because the intensity bigger of its corresponding source light, also more there is recovery value.
In order to save cost, polarization conversion device 410 and 47 may be omitted with.It is aobvious described in Fig. 6 referring specifically to Fig. 6
Show 60 display system 40 as shown in fig. 4 of system difference lies in：The retracting device 66 of Fig. 6 eliminates polarization conversion device, and
And the polarizing film of Fig. 4 is arranged to region light splitting piece.
Specifically, retracting device 66 includes reflection subassembly 68 and 69 and region light splitting piece 611.Also referring to Fig. 7,
Region light splitting piece 611 includes first area 601 and second area 602.
Reflection subassembly 68 and 69 is used for the non-image light S2's of the third polarization state and non-image light P2 of the 4th polarization state
Closing light is guided to region light splitting piece 611, and most of illumination of closing light is incident upon the first area 601 of region light splitting piece 611, light source
The most of illumination for the source light that 61a is sent out is incident upon the second area 602 of region light splitting piece 611, region light splitting piece 611 by the two into
Row geometry closing light, obtained closing light are emitted to polarization adjuster 64.
Polarization adjuster 64 adjusts closing light and obtains the source light P0 of the first polarization state and the source light S0 of the second polarization state.
In other embodiments, can also first area 601 transmit third polarization state non-image light S2 with the 4th polarize
The closing light of the non-image light P2 of state, 602 reflection sources light of second area.It is specific as shown in Figure 8.At this point, retracting device 66 is further
Including reflection subassembly 614, for coordinating with reflection subassembly 68 and 69, by the non-image light S2 and the 4th polarization state of third polarization state
The closing light of non-image light P2 be reflected into first area 601.
In conclusion the present invention can shorten the distance from optical modulator to screen, while avoiding two optical modulators
Stray light or light loss and light caused by gap pass twice through optical modulator between the pixel that alignment error when series connection is brought
Loss superposition.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (13)
1. a kind of display system, which is characterized in that including：
Light-source system, for sending out high-strength beam and low-intensity light beam；
First optical modulator, for modulating the high-strength beam according to the high-order image data of image to be displayed；
Second optical modulator, for modulating the low-intensity light beam according to the low level image data of the image to be displayed；
The high position image data and the low level image data are by the image data from the pre-determined bit segmentation image to be displayed
And it obtains；
The intensity of the high-strength beam is equal to relative to the multiple of the intensity of the low-intensity light beam：The high position image data
The number represented by a unit value of the quantity relative to low level image data end position represented by one unit value of last position
The multiple of amount；
Combined optical system, the image light for obtaining first optical modulator and second light modulator modulates is along closing light light
Road carries out closing light, to obtain the light beam for showing the image to be displayed.
2. display system according to claim 1, which is characterized in that the light-source system includes：
High-intensity light source, for sending out the high-strength beam；
Low intensity light source, for sending out the low-intensity light beam.
3. display system according to claim 1, which is characterized in that the light-source system includes：
Light source, for sending out source light；
Polarization adjuster, the source light are incident to the polarization adjuster, and the polarization adjuster is used for the one of incident light
Part is adjusted to the source light of the first polarization state, and remainder is adjusted to the source light of the second polarization state, wherein described first
The intensity of the source light of polarization state is equal to relative to the multiple of the intensity of the source light of second polarization state：The high-strength beam
Multiple of the intensity relative to the intensity of the low-intensity light beam, and the source light of first polarization state and second polarization state
The polarization direction of source light is mutually perpendicular to；
First polarizing film, for the source light of first polarization state in the light beam after adjusting the polarization adjuster and described
The source light of second polarization state is separated into the outgoing of two-way light path；
First optical modulator is located in the light path of the source light of first polarization state, and second optical modulator is located at described
In the light path of the source light of second polarization state.
4. display system according to claim 3, which is characterized in that the first polarization described in first light modulator modulates
The source light of state obtains the image light of the second polarization state, and the image light of second polarization state is emitted to first polarizing film；
The source light of second polarization state described in second light modulator modulates obtains the image light of the first polarization state, and described first partially
The image light of polarization state is emitted to first polarizing film；
First polarizing film is as the combined optical system, and first polarizing film is by the image light of first polarization state and institute
The image light for stating the second polarization state carries out closing light along the closing light light path.
5. display system according to claim 4, which is characterized in that the first polarization described in first light modulator modulates
The source light of state obtains the non-image light of the first polarization state, and the source light of the second polarization state described in second light modulator modulates obtains
The non-image light of the non-image light of second polarization state, the non-image light of first polarization state and second polarization state is also emitted
To first polarizing film, first polarizing film guides the non-image light of first polarization state and second polarization state
Non-image light returns to the light incident side that the light beam after the polarization adjuster is adjusted is incident to first polarizing film.
6. display system according to claim 3, which is characterized in that first polarizing film has reflection inclined in first
The characteristic of the light of polarization state and with transmission in the second polarization state light characteristic；Alternatively,
First polarizing film is in the characteristic of the light of the second polarization state with reflection and is in the first polarization state with transmission
Light characteristic.
7. display system according to claim 3, which is characterized in that the first polarization described in first light modulator modulates
The source light of state obtains the image light of third polarization state；
The source light of second polarization state described in second light modulator modulates obtains the image light of the 4th polarization state；
The combined optical system includes the image of the second polarizing film, the image light of the third polarization state and the 4th polarization state
Light is emitted to second polarizing film；Second polarizing film is by the image light of the third polarization state and the 4th polarization state
Image light along the closing light light path carry out closing light；The image light of the image light of the third polarization state and the 4th polarization state
Polarization direction be mutually perpendicular to.
8. display system according to claim 7, which is characterized in that the image light of the third polarization state and described first
The polarization direction of the source light of polarization state is identical or is mutually perpendicular to.
9. display system according to claim 7, which is characterized in that the first polarization described in first light modulator modulates
The source light of state obtains the non-image light of the 4th polarization state；
The source light of second polarization state described in second light modulator modulates obtains the non-image light of third polarization state；
The non-image light of the third polarization state and the non-image light of the 4th polarization state are emitted to second polarizing film；
Second polarizing film is by the non-image light of the third polarization state from the non-image light of the 4th polarization state along different
Closing light is carried out in the light path of the closing light light path.
10. display system according to claim 7, which is characterized in that there is second polarizing film reflection to be in third
The characteristic of the light of polarization state and with transmission in the 4th polarization state light characteristic；Alternatively, second polarizing film has
Reflection is in the characteristic of the light of the 4th polarization state and is in the characteristic of the light of third polarization state with transmission.
11. according to the display system described in described 9, which is characterized in that further include：
Retracting device, the non-image light of the third polarization state for synthesizing second polarizing film are polarized with the described 4th
The closing light of the non-image light of state is guided to the polarization adjuster, and the closing light is together with the source light by the light polarization modulator
It adjusts to be recycled.
12. display system according to claim 11, which is characterized in that the retracting device includes reflection subassembly, third
Polarizing film, the first polarization conversion device and the second polarization conversion device；
The reflection subassembly is used for the conjunction of the non-image light of the third polarization state and the non-image light of the 4th polarization state
Light is guided to the third polarizing film；
First polarization conversion device is used to be converted to the source light that the light source is sent out the source light of the 5th polarization state, and described the
Two polarization conversion devices are used for the closing light of the non-image light of the third polarization state and the non-image light of the 4th polarization state
Be converted to the recycling light of the 6th polarization state；
After the source light of 5th polarization state and the recycling light of the 6th polarization state are emitted to the third polarizing film, described
The recycling light of the source light of 5th polarization state and the 6th polarization state is carried out polarization closing light, obtained conjunction by three polarizing films
Light is emitted to the polarization adjuster；
The polarization adjuster adjusts the source light that the closing light obtains the source light and second polarization state of first polarization state.
13. display system according to claim 11, which is characterized in that the retracting device includes reflection subassembly and region
Light splitting piece, the region light splitting piece include first area and second area, wherein；
The reflection subassembly is used for the conjunction of the non-image light of the third polarization state and the non-image light of the 4th polarization state
Light is guided to the region light splitting piece, and most of illumination of the closing light is incident upon the first area of the region light splitting piece, described
The most of illumination for the source light that light source is sent out is incident upon the second area of the region light splitting piece, the region light splitting piece by the two into
Row geometry closing light, obtained closing light are emitted to the polarization adjuster；
The polarization adjuster adjusts the source light that the closing light obtains the source light and second polarization state of first polarization state.
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| CN201710176388.4A CN108628070B (en) | 2017-03-23 | 2017-03-23 | Display system |
| CN202010781683.4A CN111818317B (en) | 2017-03-23 | 2017-03-23 | Display system |
| PCT/CN2017/109339 WO2018171207A1 (en) | 2017-03-23 | 2017-11-03 | Display system |
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| CN201710176388.4A CN108628070B (en) | 2017-03-23 | 2017-03-23 | Display system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505841A (en) * | 2019-01-31 | 2020-08-07 | 成都理想境界科技有限公司 | Laser modulation method, laser scanning device and system |
| WO2021244394A1 (en) * | 2020-06-05 | 2021-12-09 | 深圳光峰科技股份有限公司 | Optical engine system and projection system |
| CN113885282A (en) * | 2020-07-02 | 2022-01-04 | 苏州佳世达光电有限公司 | Projector with a light source |
| WO2022141846A1 (en) * | 2020-12-28 | 2022-07-07 | 广景视睿科技（深圳）有限公司 | Light-splitting device and optical projection system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110121021A (en) * | 2019-06-28 | 2019-08-13 | 四川极智朗润科技有限公司 | A kind of optical shutter system and its imaging method suitable for Rolling shutter camera |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0829747A1 (en) * | 1996-09-11 | 1998-03-18 | Seos Displays Limited | Image display apparatus |
| WO1998020475A1 (en) * | 1996-11-01 | 1998-05-14 | Laser Power Corporation | Projection display with gradation levels obtained by modulation of beamlets |
| JP2001100699A (en) * | 1999-09-29 | 2001-04-13 | Canon Inc | Projection display device and its application system |
| WO2003016998A1 (en) * | 2001-08-17 | 2003-02-27 | Michel Sayag | Dual-stage high-contrast electronic image display |
| KR20050061307A (en) * | 2003-12-16 | 2005-06-22 | 세이코 엡슨 가부시키가이샤 | Light propagation characteristic control apparatus, optical display apparatus, light propagation characteristic control program storage medium, optical display apparatus control program storage medium, light propagation characteristic control method and optical display apparatus control method |
| CN1664888A (en) * | 2004-03-05 | 2005-09-07 | 精工爱普生株式会社 | Light modulating apparatus, optical display apparatus, light modulation control program and method |
| US6980346B1 (en) * | 2004-09-15 | 2005-12-27 | Hewlett-Packard Development Company, L.P. | Display device |
| JP2006119440A (en) * | 2004-10-22 | 2006-05-11 | Olympus Corp | Surface sequential illuminating apparatus and image projecting apparatus |
| US20060214945A1 (en) * | 2005-03-23 | 2006-09-28 | Seiko Epson Corporation | Display device and display method |
| US20110304827A1 (en) * | 2010-06-15 | 2011-12-15 | Seiko Epson Corporation | Projector |
| JP2011257645A (en) * | 2010-06-10 | 2011-12-22 | Seiko Epson Corp | Projector |
| CN102385232A (en) * | 2010-08-27 | 2012-03-21 | 精工爱普生株式会社 | Illuminator and projector |
| CN103069806A (en) * | 2010-08-12 | 2013-04-24 | 伊斯曼柯达公司 | Light source modulation for projection |
| US20130162954A1 (en) * | 2011-12-22 | 2013-06-27 | Min Aik Technology Co., Ltd. | Lcos projection system |
| US20140168614A1 (en) * | 2012-12-13 | 2014-06-19 | Seiko Epson Corporation | Light source device and projector |
| CN104618699A (en) * | 2013-11-04 | 2015-05-13 | 加拿大科视数字系统公司 | Two-stage light modulation for high dynamic range |
| WO2015073838A1 (en) * | 2013-11-15 | 2015-05-21 | Reald Inc. | High dynamic range, high contrast projection systems |
| US20150228219A1 (en) * | 2014-02-12 | 2015-08-13 | Dolby Laboratories Licensing Corporation | Dual Modulator Synchronization in a High Dynamic Range Display System |
| JP2016170387A (en) * | 2015-03-10 | 2016-09-23 | 株式会社Ｊｖｃケンウッド | Display device |
| CN106462038A (en) * | 2014-06-27 | 2017-02-22 | 杜比实验室特许公司 | Light recycling for projectors with high dynamic range |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7527381B2 (en) * | 2005-07-29 | 2009-05-05 | Hewlett-Packard Development Company, L.P. | Optical system architecture |
| US8388138B1 (en) * | 2007-03-11 | 2013-03-05 | Simon Boothroyd | Projection display systems |
| CN202141860U (en) * | 2011-07-20 | 2012-02-08 | 清华大学深圳研究生院 | Polarizing type stereo projection optical machine engine |
| US9324250B2 (en) * | 2011-09-09 | 2016-04-26 | Dolby Laboratories Licensing Corporation | High dynamic range displays comprising MEMS/IMOD components |
| CN102621789B (en) * | 2012-04-20 | 2014-06-18 | 杭州研明光电技术有限公司 | Compact liquid crystal projection light engine system using mixed light source |
| CN204178055U (en) * | 2014-09-26 | 2015-02-25 | 深圳市绎立锐光科技开发有限公司 | Light splitting Multiplexing apparatus and projection display system |
| CN104599604A (en) * | 2015-02-16 | 2015-05-06 | 京东方科技集团股份有限公司 | Display device and driving method thereof |
| CN106154714B (en) * | 2015-04-09 | 2018-11-13 | 深圳市光峰光电技术有限公司 | A kind of method and optical projection system of spatial light modulator modulation data |
| US10097800B2 (en) * | 2015-05-11 | 2018-10-09 | Reald Inc. | Optical lens systems with dynamic iris for modulating image frames |
| CN106131453B (en) * | 2016-08-30 | 2020-06-23 | 深圳市Tcl高新技术开发有限公司 | Projection brightness instantaneous increase method and system based on solid-state light source |
-
2017
- 2017-03-23 CN CN201710176388.4A patent/CN108628070B/en active Active
- 2017-03-23 CN CN202010781683.4A patent/CN111818317B/en active Active
- 2017-11-03 WO PCT/CN2017/109339 patent/WO2018171207A1/en active Application Filing
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0829747A1 (en) * | 1996-09-11 | 1998-03-18 | Seos Displays Limited | Image display apparatus |
| WO1998020475A1 (en) * | 1996-11-01 | 1998-05-14 | Laser Power Corporation | Projection display with gradation levels obtained by modulation of beamlets |
| JP2001100699A (en) * | 1999-09-29 | 2001-04-13 | Canon Inc | Projection display device and its application system |
| WO2003016998A1 (en) * | 2001-08-17 | 2003-02-27 | Michel Sayag | Dual-stage high-contrast electronic image display |
| KR20050061307A (en) * | 2003-12-16 | 2005-06-22 | 세이코 엡슨 가부시키가이샤 | Light propagation characteristic control apparatus, optical display apparatus, light propagation characteristic control program storage medium, optical display apparatus control program storage medium, light propagation characteristic control method and optical display apparatus control method |
| CN1629916A (en) * | 2003-12-16 | 2005-06-22 | 精工爱普生株式会社 | Light propagation characteristic control apparatus, optical display apparatus, light propagation characteristic control method and optical display apparatus control method |
| EP1551187A2 (en) * | 2003-12-16 | 2005-07-06 | Seiko Epson Corporation | Light propagation characteristic control apparatus, optical display apparatus, light propagation characteristic control program, optical display apparatus control program, light propagation characteristic control method and optical display apparatus control method |
| CN1664888A (en) * | 2004-03-05 | 2005-09-07 | 精工爱普生株式会社 | Light modulating apparatus, optical display apparatus, light modulation control program and method |
| US6980346B1 (en) * | 2004-09-15 | 2005-12-27 | Hewlett-Packard Development Company, L.P. | Display device |
| JP2006119440A (en) * | 2004-10-22 | 2006-05-11 | Olympus Corp | Surface sequential illuminating apparatus and image projecting apparatus |
| US20060214945A1 (en) * | 2005-03-23 | 2006-09-28 | Seiko Epson Corporation | Display device and display method |
| JP2011257645A (en) * | 2010-06-10 | 2011-12-22 | Seiko Epson Corp | Projector |
| US20110304827A1 (en) * | 2010-06-15 | 2011-12-15 | Seiko Epson Corporation | Projector |
| CN103069806A (en) * | 2010-08-12 | 2013-04-24 | 伊斯曼柯达公司 | Light source modulation for projection |
| CN102385232A (en) * | 2010-08-27 | 2012-03-21 | 精工爱普生株式会社 | Illuminator and projector |
| US20130162954A1 (en) * | 2011-12-22 | 2013-06-27 | Min Aik Technology Co., Ltd. | Lcos projection system |
| US20140168614A1 (en) * | 2012-12-13 | 2014-06-19 | Seiko Epson Corporation | Light source device and projector |
| CN104618699A (en) * | 2013-11-04 | 2015-05-13 | 加拿大科视数字系统公司 | Two-stage light modulation for high dynamic range |
| WO2015073838A1 (en) * | 2013-11-15 | 2015-05-21 | Reald Inc. | High dynamic range, high contrast projection systems |
| US20150228219A1 (en) * | 2014-02-12 | 2015-08-13 | Dolby Laboratories Licensing Corporation | Dual Modulator Synchronization in a High Dynamic Range Display System |
| CN106462038A (en) * | 2014-06-27 | 2017-02-22 | 杜比实验室特许公司 | Light recycling for projectors with high dynamic range |
| JP2016170387A (en) * | 2015-03-10 | 2016-09-23 | 株式会社Ｊｖｃケンウッド | Display device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505841A (en) * | 2019-01-31 | 2020-08-07 | 成都理想境界科技有限公司 | Laser modulation method, laser scanning device and system |
| CN111505841B (en) * | 2019-01-31 | 2023-06-23 | 成都理想境界科技有限公司 | Laser modulation method, laser scanning device and system |
| WO2021244394A1 (en) * | 2020-06-05 | 2021-12-09 | 深圳光峰科技股份有限公司 | Optical engine system and projection system |
| CN113885282A (en) * | 2020-07-02 | 2022-01-04 | 苏州佳世达光电有限公司 | Projector with a light source |
| WO2022141846A1 (en) * | 2020-12-28 | 2022-07-07 | 广景视睿科技（深圳）有限公司 | Light-splitting device and optical projection system |
Also Published As
| Publication number | Publication date |
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| WO2018171207A1 (en) | 2018-09-27 |
| CN108628070B (en) | 2020-09-11 |
| CN111818317B (en) | 2021-12-14 |
| CN111818317A (en) | 2020-10-23 |
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