CN108255001A - Optical projection system - Google Patents
Optical projection system Download PDFInfo
- Publication number
- CN108255001A CN108255001A CN201611236304.3A CN201611236304A CN108255001A CN 108255001 A CN108255001 A CN 108255001A CN 201611236304 A CN201611236304 A CN 201611236304A CN 108255001 A CN108255001 A CN 108255001A
- Authority
- CN
- China
- Prior art keywords
- spoke
- light source
- light
- area
- sectional area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention relates to a kind of optical projection systems.The optical projection system includes light source, colour wheel and spatial light modulator, and light source is used to send out light source light；Colour wheel is located in the light path where light source light, colour wheel includes at least two sectional areas, at least two sectional areas receive light source light and at least two color of light of corresponding injection respectively, light source light is radiated at the hot spot formed on colour wheel from starting to cross over for a spoke phase during two sectional areas are undergone to end across two sectional areas, and the region being irradiated within a spoke phase by hot spot forms a spoke area；Region other than the spoke area that one sectional area is included forms a non-spoke area, hot spot is radiated at undergone in a non-spoke area during be a non-spoke phase；Spatial light modulator is used to modulate at least two color of light according to image data to generate the projected light needed for projected image, and spatial light modulator is closed the corresponding spoke phase in spoke area.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of optical projection systems.
Background technology
Existing optical projection system generally comprises light source, colour wheel, spatial light modulator, and (such as LCOS spatial light modulators or DMD are empty
Between optical modulator) and projection lens, the colour wheel receives the light of the light source and sequence is projected such as redgreenblue sequential light,
The spatial light modulator carries out image modulation, the projection lens pair according to image data to the sequential light that the colour wheel is sent out
The image light of the spatial light modulator output is projected to show projected image.
However, in existing optical projection system, when colour wheel projects sequential light, adjacent area of the colour wheel between sectional area can go out
The light of existing two kinds of colors, and which hinders the raisings of image displaying quality, it is in order to solve this problem, general in the prior art to use
Light source is closed in spoke region, so as to fulfill spoke area not emergent light, but the period that light source is closed is very short, this is to light source
It is required that very high, cause it is possible in theory, but practical operation will appear light source can not quick response, equally will appear spoke effect
It answers, influences the projected image quality of the optical projection system.
Invention content
The technical issues of to solve prior art spoke effects projected image quality, the present invention, which provides one kind, to be had
Effect improves the optical projection system of influence of the spoke effect to projected image quality.
A kind of optical projection system, including light source, colour wheel and spatial light modulator.The light source is used to send out light source light；Institute
It states in the light path where colour wheel is located at the light source light that the light source is sent out, the colour wheel includes at least two sectional areas, described
At least two sectional areas receive the light source light respectively and at least two color of light of corresponding injection, the light source light are radiated at color
The hot spot formed on wheel is one from starting to cross over during two sectional areas are undergone to end across two sectional areas
Spoke phase, the region being irradiated within a spoke phase by the hot spot form a spoke area；One spoke divides into two
For section respectively positioned at two adjacent sectional areas, the region other than the spoke area that a sectional area is included forms a non-wheel
Spoke area, the hot spot is radiated at undergone in a non-spoke area during for a non-spoke phase；The spatial light modulator
For generating the projected light needed for projected image, the spatial light tune according to image data modulation at least two color of light
Device processed is closed in the spoke phase.
In one embodiment, the light source is closed in the spoke phase.
In one embodiment, the light source enters the closing process period, and next when the spoke phase starts
A non-spoke phase starts to advance into the opening process period.
In one embodiment, the light source sequentially enters closing process period, the when of completely closing in the spoke phase
Section and opening process period, the light source enters in the non-spoke phase fully opens the period.
In one embodiment, when the non-spoke phase before the light source starts in the spoke phase enters closing process
Section, and enter the opening process period when next non-spoke phase starts.
In one embodiment, the light source sequentially enters the opening process period in the non-spoke phase, fully opens
Period and closing process period, the light source enters in the spoke phase completely closes the period.
In one embodiment, the light source is opened in the spoke phase.
In one embodiment, the light source is different in the driving current of two neighboring non-spoke phase, and respectively first
Driving current and the second driving current, the driving current of the light source is adjusted when the spoke phase starts, by described first
Driving current is transitioned into second driving current.
In one embodiment, the colour wheel includes the first sectional area, the second sectional area and third sectional area,
Circumferentially direction is ranked sequentially for first sectional area, the second sectional area and third sectional area, and the colour wheel includes position
The first spoke area between the non-spoke area of first sectional area and the non-spoke area of the second sectional area, positioned at described
The second spoke area between the non-spoke area of second sectional area and the non-spoke area of third sectional area and positioned at the third
Third spoke area between the non-spoke region of sectional area and the non-spoke area of the first sectional area, the driving electricity of the light source
Stream is different in the driving current of the non-spoke area corresponding non-spoke phase of three sectional areas, and respectively described first
Driving current, second driving current and the third driving current, the driving current of the light source are opened in the spoke phase
Be adjusted during the beginning, and the driving current of the light source in the first spoke area corresponding spoke phase by first driving current
Become second driving current, the driving current of the light source is in the second spoke area corresponding spoke phase by described second
Driving current becomes the third driving current, the driving current of the light source the third spoke area corresponding spoke phase by
The third driving current becomes first driving current.
In one embodiment, the non-spoke area of first sectional area receives the light source light and projects blue
Light, second sectional area carries red wavelength transition material, and the non-spoke area of second sectional area receives institute
It states light source light and projects red light, the third sectional area carries yellow wavelengths transition material, and the third segment identifier
The non-spoke area in domain receives the light source light and projects sodium yellow, and first driving current is more than second driving current,
The third driving current is more than second driving current and less than first driving current.
Compared with prior art, in the optical projection system, the spatial light modulator is closed in the spoke phase, is prevented
The light that image is generated in the spoke phase becomes modulation light by spatial light modulator modulation and influences picture quality, so as to the throwing
The projected image quality of shadow system can be enhanced.Further, in one embodiment, in spoke phase only close space light
Modulator so controls, and the quality that image shows is changed using simplest mode.
Description of the drawings
Fig. 1 is the structure diagram of the optical projection system of first embodiment of the invention.
Fig. 2 is the structure diagram of colour wheel shown in Fig. 1.
Fig. 3 to Fig. 5 is the structure diagram of the change embodiment of colour wheel shown in Fig. 1.
Fig. 6 is the light source of optical projection system shown in Fig. 1 and the driver' s timing schematic diagram of spatial light modulator.
Fig. 7 is that the light source of the optical projection system of second embodiment of the invention and the driver' s timing of spatial light modulator are illustrated
Figure.
Fig. 8 is that the light source of the optical projection system of third embodiment of the invention and the driver' s timing of spatial light modulator are illustrated
Figure.
Fig. 9 is that the light source of the optical projection system of four embodiment of the invention and the driver' s timing of spatial light modulator are illustrated
Figure.
Figure 10 is the colour wheel structure diagram of the optical projection system of four embodiment of the invention.
Main element symbol description
Optical projection system 100
Light source controller 110
Light source 120
Hot spot 121
Colour wheel driving device 130
Colour wheel 140,440
Controller 150
Spatial light modulator 160
Projection lens 170
Image data DATA
Sectional area 141, B, R, G, Y, B1, B2, R1, R2, G1, G2
Part spoke area 141b
Spoke area 142,442a, 442b
Non-spoke area 141a, 441a
Opening process period t1
Closing process period t2
Fully open period t3
Completely close period t4
Colour wheel cycle T
Non-spoke phase T1
Spoke phase T2, T2', T2 "
Driving current I1, I2, I3
Following specific embodiment will be further illustrated the present invention with reference to above-mentioned attached drawing.
Specific embodiment
First embodiment
Referring to Fig. 1, Fig. 1 is the structure diagram of the optical projection system 100 of first embodiment of the invention.The projection system
System 100 includes light source controller 110, light source 120, colour wheel driving device 130, colour wheel 140, controller 150, spatial light modulator
160 and projection lens 170.The light source controller 110 is for driving the light source 120 to shine, the colour wheel driving device
130 for driving the colour wheel 140 to move, and the colour wheel 140 is used to receive the light that the light source 120 is sent out and injection at least two
Kind color of light, the spatial light modulator 160 are used to carry out image at least two color of light according to image data DATA
To generate image light, the projection lens 170 is used to be projected to show projected image according to described image light for modulation.It is described
For controlling, the light source controller 110 unlatches and closes the light source 120 sequential to controller 150, colour wheel driving fills
Put 130 actuating speed and the spatial light modulator 160 modulation timing so that three is adapted.
Specifically, the light source controller 110 is used to control the open and close of the light source 120, and the light source 120 is used
In receiving drive signal that the light source controller 110 sends out and sending out light source light, such as blue-light source light, the light source 120 can
Think blue-light source.In a kind of change embodiment, the light source 120 can also be the light source of other colors, not with indigo plant
Color light source is limited, and such as light source 120 can be ultraviolet source, so as to send out ultraviolet source light.Further, the light source
120 can be semiconductor diode laser light source, to provide the light source light of high brightness.
Referring to Fig. 2, Fig. 2 is the structure diagram of colour wheel 140 shown in Fig. 1.The colour wheel 140 is located at the light source 120
In light path where the light source light sent out, the colour wheel 140 includes at least two sectional areas 141, at least two segmentation
Wavelength conversion material is carried in region 141 at least one sectional area 141, at least two sectional area 141 receives
It is described that the light source light and correspondence, which project at least one of at least two color of light, at least two color of light color of light,
The conversion light that wavelength conversion material is excited by the light source light and generated, each sectional area 141 project at least two face
A kind of color of light in coloured light.The colour wheel driving device 130 is for driving the colour wheel 140 to move, so that described at least two
A sectional area 141 is periodically in the light path where the light source light and correspondence periodically projects described at least two
Color of light.
It is appreciated that in embodiment is changed, the light source 120 can also be white light source, and the colour wheel 140 is extremely
Few two sectional areas 141 can be the filter area for carrying filter, for by color of light a certain in white light filter out so as to
So that at least two sectional area 141 receives the light source light and at least two color of light of corresponding injection.
In present embodiment, at least two sectional area 141 is peripherally disposed, the colour wheel driving device
The 130 driving colour wheels 140 are rotated along 140 center of colour wheel so that at least two sectional areas, the 141 periodic position
In in the light path where the light source light, so as to which at least two sectional area 141 periodically projects described at least two
Color of light.It is appreciated that the size of at least two sectional area 141 can be set as identical or not according to actual needs
Together.
Further, the light source light that the light source 120 is sent out is radiated at the hot spot that is formed on colour wheel 140 from starting across phase
It it is a spoke phase during being undergone during adjacent two sectional areas 141 to end across two sectional areas 141, in a wheel
The region being irradiated in the spoke phase by the hot spot forms a spoke area 142；One spoke area 142 divides for Liang Duan spokes area
141b is respectively positioned at two adjacent sectional areas 141, the region other than the spoke area 141b that a sectional area 141 is included
Form a non-spoke area 141a, the hot spot is radiated at undergone on a non-spoke area 141a during be a non-spoke
Phase.It that is to say, each sectional area 141 includes non-spoke area 141a and part spoke area 141b, two neighboring sectional area 141
Non-spoke area 141a between two parts spoke area 141b form the spoke area 142.
As shown in Fig. 2, in present embodiment, the colour wheel 140 includes three segment identifiers along the circumferential direction set gradually
Domain 141, respectively the first sectional area B, the second sectional area R and third sectional area G.The first sectional area B is used for
The first color of light, such as blue light are projected, when the light source 120 is blue-light source, can be set on the first sectional area R
There are scattering material, the light that the light source 120 is sent out to be projected after being scattered via the first sectional area B；When the light source
120 when being ultraviolet source, can be provided with first wave length transition material on the first sectional area B, the light source 120 is sent out
Light can excite the first wave length transition material and generate first color of light.The second sectional area R is used to penetrate
Go out the second color of light, such as red light, second wave length transition material can be provided on the second sectional area R, it is such as red glimmering
Light powder, the light that the light source 120 is sent out can excite the second wave length transition material and generate second color of light, i.e., red
Coloured light；The third sectional area G can be set for projecting third color of light, such as green light on the third sectional area G
There are third wavelength conversion material, such as green emitting phosphor, the light that the light source 120 is sent out can excite the third wavelength convert material
Expect and generate the third color of light, is i.e. green light.
Further, in the embodiment shown in figure 2, the first sectional area B, the second sectional area R and described
Third sectional area G includes the part spoke area 141b of non-spoke area 141a and neighbouring another sectional area.Wherein, described
Two parts spoke area 141b between the non-spoke area 141a of one sectional area B and the second sectional area R can be defined
For the first spoke area；Two parts between the non-spoke area 141a of the second sectional area R and the third sectional area G
Spoke area 141b can be defined as the second spoke area；The non-spoke area of the third sectional area G and the first sectional area B
Two parts spoke area 141b between 141a can be defined as third spoke area.It is appreciated that before above-mentioned sectional area " the
One ", " second ", " third " attribute are only used for description purpose, and there is no specifically limit some region.
Further, as shown in figure 3, in the first change embodiment, the colour wheel 140 can include circumferentially side
To two sectional areas 141 set gradually, respectively the first sectional area B and the second sectional area Y.First segment identifier
Domain B is for the first color of light of injection, such as blue light, when the light source 120 is blue-light source, on the first sectional area B
Scattering material can be provided with, the light that the light source 120 is sent out projects after being scattered via the first sectional area B；When
When the light source 120 is ultraviolet source, first wave length transition material, the light can be provided on the first sectional area B
The light that source 120 is sent out can excite the first wave length transition material and generate first color of light.Second segment identifier
For domain Y for projecting the 4th color of light, such as sodium yellow can be provided with the 4th wavelength conversion material on the second sectional area Y,
Such as yellow fluorescent powder, the light that the light source 120 is sent out can excite the 4th wavelength conversion material and generate the 4th face
Coloured light, i.e. sodium yellow.
Further, in embodiment shown in Fig. 3, the first sectional area B, the second sectional area Y include
The part spoke area 141b of non-spoke area 141a and neighbouring another sectional area 141.Wherein, the first sectional area B and institute
The two parts spoke area 141b stated between the non-spoke area 141a of the second sectional area Y can be defined as the first spoke area；Institute
State other two part spoke area 141b between the non-spoke area 141a of the second sectional area Y and the first sectional area B
It can be defined as the second spoke area.
Further, as shown in figure 4, in second is changed embodiment, the colour wheel 140 can include circumferentially side
To four sectional areas B, R, G, the Y set gradually, respectively the first sectional area B, the second sectional area R, third segment identifier
Domain G and the 4th sectional area Y.The first sectional area B is for the first color of light of injection, such as blue light, when the light source 120
During for blue-light source, it can be provided with scattering material on the first sectional area B, the light that the light source 120 is sent out can be through
It is projected after being scattered by the first sectional area B；It, can on the first sectional area B when the light source 120 is ultraviolet source
To be provided with first wave length transition material, the light that the light source 120 is sent out can excite the first wave length transition material and produce
Raw first color of light.The second sectional area R is for the second color of light of injection, such as red light, second segment identifier
Second wave length transition material, such as red fluorescence powder can be provided on the R of domain, the light that the light source 120 is sent out can excite described
Second wave length transition material and generate second color of light, i.e. red light；The third sectional area G is used to project third face
Coloured light, such as green light can be provided with third wavelength conversion material, such as green emitting phosphor on the third sectional area G, described
The light that light source 120 is sent out can excite the third wavelength conversion material and generate the third color of light, i.e. green light.It is described
For 4th sectional area Y for projecting the 4th color of light, such as sodium yellow can be provided with the 4th wave on the 4th sectional area Y
Long transition material, such as yellow fluorescent powder, the light that the light source 120 is sent out can excite the 4th wavelength conversion material and generate
4th color of light, i.e. sodium yellow.
Further, in embodiment shown in Fig. 4, the first sectional area B, the second sectional area R, described
Three sectional area G and the 4th sectional area Y include the part spoke of non-spoke area 141a and neighbouring another sectional area
Area 141b.Two parts spoke area 141b of two neighboring sectional area defines the spoke area 142.
Further, as shown in figure 5, in the third change embodiment, the colour wheel 140 can include circumferentially side
To six sectional areas set gradually, respectively the first sectional area B1, the second sectional area B2, third sectional area R1,
4th sectional area R2, the 5th sectional area G1 and the 6th sectional area G2.The first sectional area B1 and the second segment identifier
Domain B2 for project the first color of light, such as blue light, when the light source 120 be blue-light source when, the first sectional area B1
With that can be provided with scattering material on the second sectional area B2, the light that the light source 120 is sent out can be via the described first segmentation
It is projected after region B1 and the second sectional area B2 scatterings；When the light source 120 is ultraviolet source, the first sectional area B1
With that can be provided with first wave length transition material on the second sectional area B2, the light that the light source 120 is sent out can excite
The first wave length transition material and generate first color of light.The third sectional area R1 and the 4th sectional area R2 is used
In projecting the second color of light, such as red light, second can be provided on the third sectional area R1 and the 4th sectional area R2
Wavelength conversion material, such as red fluorescence powder, the light that the light source 120 is sent out can excite the second wave length transition material and produce
Raw second color of light, i.e. red light；The 5th sectional area G1 and the 6th sectional area G2 is used to project third color
Light, such as green light can be provided with third wavelength conversion material on the 5th sectional area G1 and the 6th sectional area G2, such as
Green emitting phosphor, the light that the light source 120 is sent out can excite the third wavelength conversion material and generate the third color
Light, i.e. green light.
Further, it is the first sectional area B1, the second sectional area B2, described in embodiment shown in Fig. 5
Third sectional area R1, the 4th sectional area R2, the 5th sectional area G1 and the 6th sectional area G2 are wrapped
Include non-spoke area and the part spoke area of neighbouring another sectional area.Two parts spoke area 141b of two neighboring sectional area
Define the spoke area 142.
In present embodiment, the colour wheel 140 is transmission-type colour wheel, i.e., the light of described light source 120 is from the colour wheel 140
Side is incident, and the opposite side of the colour wheel 140 projects at least two color of light.It is however, it will be understood that real in change
It applies in mode, the colour wheel 140 or reflective colour wheel, i.e., the light of described light source 120 is incident from the side of the colour wheel,
And at least two color of light is projected in the side of the colour wheel 140.The spatial light modulator 160 can be that DMD is modulated
Device, but it is not limited to DMD adjusters.
Referring to Fig. 6, Fig. 6 is the light source 120 of optical projection system 100 shown in Fig. 1 and the driver' s timing of spatial light modulator 160
Schematic diagram.First, each driving period of light source 120 is first defined, the driving period of the light source 120 includes the opening process period
T1, closing process period t2, it fully opens period t3 and completely closes period t4.Wherein described opening process period t1 is from opening
Begin the period for reaching running current to the light source 120 to the light source 120 application drive signal and working normally, institute
It is to stop applying driving of the drive signal to the light source 120 to the light source 120 to work to state closing process period t2
The period that electric current is down to zero and is completely closed, the period t3 that fully opens reach running current for the light source 120
And the period worked normally, the period t4 that completely closes is the period that 120 driving current of light source is zero.It can manage
Solution, in opening process period t1 and the closing process period t2, the light source 120 can be sent out light but light intensity is less than
The light intensity for fully opening period t3 (when working normally).
Second, define non-spoke phase T1 and spoke phase T2.Each colour wheel period (time that i.e. described colour wheel rotates a circle)
Interior, the non-spoke area 141a of each sectional area 141 corresponds to the period as non-spoke phase T1, wherein each sectional area 141
Non-spoke area 141a is located in non-spoke phase T1 in the light path where the light that the light source 120 is sent out, and the colour wheel 140 is right
The non-spoke area 141a for the sectional area 141 answered receives light source light and projects a kind of color of light.Two neighboring non-spoke phase T1 it
Between period be the corresponding spoke area 142 spoke phase T2, it will be understood that in the spoke phase T2, the spoke area 142
In the light path of light sent out positioned at above-mentioned light source 120, but the light source 120 can not shine in the spoke phase T2.
Each colour wheel period includes the non-spoke phase T1 being arranged alternately and spoke phase T2, wherein non-spoke phase T1 and wheel
The quantity of spoke phase T2 is consistent with the quantity in the spoke area 142 with the non-spoke area 141a of the sectional area 141.When described non-
When the quantity of spoke phase T1 is more than two, the length of described two above non-spoke phase T1 can be different.
It is described under the control of the light source controller 110 and the controller 150 in embodiment as shown in Figure 6
Light source 120 is closed with the spatial light modulator 160 in the spoke phase.Specifically, in present embodiment, the light
Source 120 enters closing process period t2 when the spoke phase T2 starts, and starts to advance into out in next non-spoke phase T1
Open process period t1.Specifically, the light source 120 sequentially enters closing process period t2 in spoke phase T2, completely closes
Period t4 and opening process period t1, the light source 120 enters in non-spoke phase T1 fully opens period t3.
Compared with prior art, in the optical projection system 100, the spatial light modulator 160 is in the spoke phase T2
It closes, prevent the light that image is generated in spoke phase T2 from becoming modulation light by the spatial light modulator 160 modulation and influences
Picture quality can be enhanced so as to the projected image quality of the optical projection system 100.
Further, in one embodiment, the light source 120 and the spatial light modulator 160 are in the wheel
Spoke phase T2 is closed, and on the one hand ensure that the quality that image is shown, on the other hand energy saving.Since the total duration of spoke phase T2 accounts for one
At least the 1/20 of colour wheel cycle duration, so the energy-saving effect of optical projection system 100 reaches more than 5%.
Second embodiment
Referring to Fig. 7, Fig. 7 is the driving of the light source and spatial light modulator of the optical projection system of second embodiment of the invention
Time diagram.The optical projection system of the second embodiment and the optical projection system of first embodiment are essentially identical, that is,
It says, the projection system of the second embodiment is also can be essentially used for the description of the optical projection system of the first embodiment
System, the two main difference is that：The driver' s timing of light source is different.Specifically, in the second embodiment, space light modulation
Device is closed in spoke phase T2 but light source is still opened in spoke phase T2.
In the second embodiment, spatial light modulator is simply turned off in the spoke phase T2, is so controlled, use is most simple
Single mode changes the quality that image is shown.
Third embodiment
Referring to Fig. 8, Fig. 8 is the driving of the light source and spatial light modulator of the optical projection system of third embodiment of the invention
Time diagram.The optical projection system of the third embodiment and the optical projection system of first embodiment are essentially identical, that is,
It says, the projection system of the third embodiment is also can be essentially used for the description of the optical projection system of the first embodiment
System, the two main difference is that：The driver' s timing of light source is different.Specifically, in the third embodiment, light source is in spoke
Non-spoke phase T1 before phase T2 starts enters closing process period t2, and enter unlatching when next non-spoke phase T1 starts
Process period t1.Specifically, as shown in fig. 7, light source sequentially enters opening process period t1 in non-spoke phase T1, opens completely
Period t3 and closing process period t2 is opened, light source enters in spoke phase T2 completely closes period t4.
In the third embodiment, light source starts to be closed and in next non-spoke before the spoke phase T2 starts
Phase T1 is just opened so that light source is fully closed in the spoke phase T2, so as to more energy saving.
4th embodiment
Referring to Fig. 9, Fig. 9 is the driving of the light source and spatial light modulator of the optical projection system of four embodiment of the invention
Time diagram.The optical projection system of 4th embodiment and the optical projection system of first embodiment are essentially identical, that is,
It says, the projection system of the 4th embodiment is also can be essentially used for the description of the optical projection system of the first embodiment
System, the two main difference is that：The driver' s timing of light source and the structure of colour wheel are different.
Referring to Fig. 10, Figure 10 is 440 structure diagram of colour wheel of present embodiment.The colour wheel 440 includes first point
Section region B, the second sectional area R and third sectional area Y, the first sectional area B, the second sectional area R and third point
Section region Y is circumferentially ranked sequentially in direction, and the colour wheel 440 includes the non-spoke area 441a positioned at the first sectional area B
The first spoke area 442a between the non-spoke area 441a of the second sectional area R, the non-wheel positioned at the second sectional area R
It the second spoke area 442b between spoke area 441a and the non-spoke area 441a of third sectional area Y and is segmented positioned at the third
Third spoke area 442c between the non-spoke area 441a of the non-spoke region 441a of region Y and the first sectional area B.
Specifically, in the driver' s timing of the light source of the optical projection system of four embodiment of the invention, the driving current of light source
It is different in the driving current of the corresponding non-spoke phase T1 of non-spoke area 441a of three sectional areas, it is respectively described
First driving current I1, the second driving current I2 and the third driving current I3, the driving current of light source is in the wheel
Spoke phase T2 is adjusted when starting, and the driving current of light source in the first spoke area 442a corresponding spoke phases T2 by described
One driving current I1 is transitioned into the second driving current I2, and the driving current of light source is corresponding in the second spoke area 442b
Spoke phase T2' is transitioned into the third driving current I3 by the second driving current I2, and the driving current of the light source is in institute
State third spoke area 442c corresponding spoke phases T2 " becomes the first driving current I1 from the third driving current I3.
In present embodiment, the non-spoke area 441a of the first sectional area B receives the light source light and projects blue
Light, the second sectional area R carry red wavelength transition material, and the non-spoke area 441a of the second sectional area R
It receives the light source light and projects red light, the third sectional area Y carries yellow wavelengths transition material, and the third
The non-spoke area 441a of sectional area Y receives the light source light and projects sodium yellow, and the first driving current I1 is more than described
Second driving current I2, the third driving current I3 is more than the second driving current I2 and is less than first driving current
I1。
In 4th embodiment, the driving current of light source needs to modulate according to different non-spoke phase T1, such as
T1 periods non-spoke phase of blue light are emitted using high driving current, are used in T1' periods non-spoke phase of outgoing red light low
Driving current uses the driving current higher than feux rouges in period non-spoke phase of outgoing sodium yellow.On the one hand, the driving electricity of light source
The adjusting of stream is completed in spoke phase T2, since the spoke phase T2 is relatively long, so the response speed requirement to light source
It is low.On the other hand, in the spoke phase T2, the current-modulation of light source is completed during this period, and the spatial light modulator is in
Closed state, the light that light source is emitted in modulation are not the light of predetermined luminance, do not export image light during this period, so that figure
As display effect is more preferable.
It is appreciated that in the change embodiment of the 4th embodiment, colour wheel can also use Fig. 3, Fig. 4 or Fig. 5
Or the colour wheel of other different segmental structures, the driving current of light source are corresponded in the non-spoke area 441a of the n sectional area
Non-spoke phase T1 driving current it is different, n represents the number of sectional area, and n is the natural number more than or equal to 2, and
Next spoke phase was transitioned by the second driving current of upper non-spoke phase in a certain spoke area 442b corresponding spoke phases T2'
First driving current.For example, in a kind of change embodiment, when colour wheel uses the colour wheel described in Fig. 3, the driving electricity of light source
Driving current of the stream in the corresponding non-spoke phase T1 of non-spoke area 441a of described two sectional areas is different, respectively institute
The first driving current I1, the second driving current I2 are stated, the driving current of light source is adjusted when the spoke phase T2 starts,
And the driving current of light source is transitioned into the first spoke area 442a corresponding spoke phases T2 by the first driving current I1
The second driving current I2, the driving current of light source is in the second spoke area 442b corresponding spoke phases T2' by described
Two driving current I2 are transitioned into the first driving current I1.In addition, according to the above, it is believed that the technical staff in the field
It is appreciated that the drive current variations mode for being equal to the embodiment of 4 or 6 grade other numerical value about n, details are not described herein again, and n is equal to
The embodiment of 4 or 6 grade other numerical value.
The foregoing is merely the embodiment of the present invention, are not intended to limit the scope of the invention, every to utilize this hair
The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made directly or indirectly is used in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of optical projection system, including light source, colour wheel and spatial light modulator, it is characterised in that：
The light source is used to send out light source light；
The colour wheel is located in the light path where the light source light that the light source is sent out, and the colour wheel includes at least two segment identifiers
Domain, at least two sectional area receive the light source light and at least two color of light of corresponding injection, the light source light respectively
The hot spot formed on colour wheel is radiated at from starting to cross over two sectional areas to the phase for terminating to be undergone across two sectional areas
Between for a spoke phase, the region being irradiated within a spoke phase by the hot spot forms a spoke area；One spoke
Two sections are divided into respectively positioned at two adjacent sectional areas, and the region other than the spoke area that a sectional area is included is formed
One non-spoke area, the hot spot is radiated at undergone in a non-spoke area during for a non-spoke phase；
The spatial light modulator is used to modulate at least two color of light according to image data to generate needed for projected image
Projected light, the spatial light modulator is closed in the spoke phase.
2. optical projection system as described in claim 1, it is characterised in that：The light source is closed in the spoke phase.
3. optical projection system as claimed in claim 2, it is characterised in that：The light source enters closing when the spoke phase starts
The process period, and start to advance into the opening process period in next non-spoke phase.
4. optical projection system as claimed in claim 3, it is characterised in that：The light source sequentially enters in the spoke phase closed
Journey period, the period of completely closing and opening process period, the light source enters in the non-spoke phase fully opens the period.
5. optical projection system as claimed in claim 2, it is characterised in that：The light source start in the spoke phase before non-spoke
Phase enters the closing process period, and enters the opening process period when next non-spoke phase starts.
6. optical projection system as claimed in claim 5, it is characterised in that：The light source sequentially enters in the non-spoke phase to be opened
Process period, the period of fully opening and closing process period, the light source enters in the spoke phase completely closes the period.
7. optical projection system as described in claim 1, it is characterised in that：The light source is opened in the spoke phase.
8. optical projection system as claimed in claim 7, it is characterised in that：The light source is in the driving electricity of two neighboring non-spoke phase
Stream is different, and respectively the first driving current and the second driving current, the driving current of the light source is when the spoke phase starts
It is adjusted, second driving current is transitioned by first driving current.
9. optical projection system as claimed in claim 8, it is characterised in that：The colour wheel includes the first sectional area, the second segmentation
Region and third sectional area, first sectional area, the second sectional area and third sectional area circumferentially direction sequence
Arrangement, the colour wheel are included between the non-spoke area of first sectional area and the non-spoke area of the second sectional area
First spoke area, the second wheel between the non-spoke area of second sectional area and the non-spoke area of third sectional area
Spoke area and the third spoke between the non-spoke region of the third sectional area and the non-spoke area of the first sectional area
Area, the driving current of the light source the non-spoke area corresponding non-spoke phase of three sectional areas driving current respectively not
It is identical, respectively described first driving current, second driving current and the third driving current, the driving of the light source
Electric current is adjusted when the spoke phase starts, and the driving current of the light source is in the first spoke area corresponding spoke phase
Second driving current is become from first driving current, the driving current of the light source corresponds in the second spoke area
The spoke phase third driving current is become from second driving current, the driving current of the light source is in the third round
The spoke area corresponding spoke phase becomes first driving current from the third driving current.
10. optical projection system as claimed in claim 9, it is characterised in that：The non-spoke area of first sectional area receives institute
It states light source light and projects blue light, second sectional area carries red wavelength transition material, and second segment identifier
The non-spoke area in domain receives the light source light and projects red light, and the third sectional area carries yellow wavelengths conversion material
Material, and the non-spoke area of the third sectional area receives the light source light and projects sodium yellow, first driving current is big
In second driving current, the third driving current is more than second driving current and less than the described first driving electricity
Stream.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611236304.3A CN108255001B (en) | 2016-12-28 | 2016-12-28 | Projection system |
| PCT/CN2017/109335 WO2018121063A1 (en) | 2016-12-28 | 2017-11-03 | Projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611236304.3A CN108255001B (en) | 2016-12-28 | 2016-12-28 | Projection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108255001A true CN108255001A (en) | 2018-07-06 |
| CN108255001B CN108255001B (en) | 2021-07-09 |
Family
ID=62706826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611236304.3A Active CN108255001B (en) | 2016-12-28 | 2016-12-28 | Projection system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108255001B (en) |
| WO (1) | WO2018121063A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208697A (en) * | 2018-11-22 | 2020-05-29 | 中强光电股份有限公司 | Projection system and control method of driving current thereof |
| WO2021121300A1 (en) * | 2019-12-19 | 2021-06-24 | 深圳光峰科技股份有限公司 | Current control circuit and method, and projection device |
| CN113253554A (en) * | 2020-02-13 | 2021-08-13 | 中强光电股份有限公司 | Illumination system, illumination control method, and projection apparatus |
| WO2022002185A1 (en) * | 2020-07-02 | 2022-01-06 | 深圳光峰科技股份有限公司 | Current control method, switching power supply circuit and projection device |
| CN113934091A (en) * | 2020-06-29 | 2022-01-14 | 中强光电股份有限公司 | Illumination system and projection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060221026A1 (en) * | 2003-08-26 | 2006-10-05 | Shmuel Roth | Spoke recovery in a color display |
| CN101180890A (en) * | 2005-03-24 | 2008-05-14 | 深圳Tcl新技术有限公司 | System and method for projecting video onto a screen |
| CN102905450A (en) * | 2011-07-28 | 2013-01-30 | 台达电子企业管理（上海）有限公司 | Discharge lamp system and control method thereof |
| CN104797977A (en) * | 2012-11-20 | 2015-07-22 | 日立麦克赛尔株式会社 | Projection-type video-image-displaying device |
| CN104898363A (en) * | 2012-08-06 | 2015-09-09 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and related projection system |
| CN105988266A (en) * | 2015-02-05 | 2016-10-05 | 深圳市绎立锐光科技开发有限公司 | Projection equipment, projection control system and projection control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4186905B2 (en) * | 2004-10-08 | 2008-11-26 | 松下電器産業株式会社 | Color wheel and projection display device using the same |
| JP5978839B2 (en) * | 2012-08-02 | 2016-08-24 | セイコーエプソン株式会社 | Projection system |
| TWI480581B (en) * | 2013-01-09 | 2015-04-11 | Delta Electronics Inc | Illumination system for stereoscopic projection device |
| CN103728824B (en) * | 2013-12-30 | 2015-09-02 | 苏州佳世达光电有限公司 | Light-source system |
| JP6450924B2 (en) * | 2014-03-05 | 2019-01-16 | パナソニックＩｐマネジメント株式会社 | Projection display device |
-
2016
- 2016-12-28 CN CN201611236304.3A patent/CN108255001B/en active Active
-
2017
- 2017-11-03 WO PCT/CN2017/109335 patent/WO2018121063A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060221026A1 (en) * | 2003-08-26 | 2006-10-05 | Shmuel Roth | Spoke recovery in a color display |
| CN101180890A (en) * | 2005-03-24 | 2008-05-14 | 深圳Tcl新技术有限公司 | System and method for projecting video onto a screen |
| CN102905450A (en) * | 2011-07-28 | 2013-01-30 | 台达电子企业管理（上海）有限公司 | Discharge lamp system and control method thereof |
| CN104898363A (en) * | 2012-08-06 | 2015-09-09 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and related projection system |
| CN104797977A (en) * | 2012-11-20 | 2015-07-22 | 日立麦克赛尔株式会社 | Projection-type video-image-displaying device |
| CN105988266A (en) * | 2015-02-05 | 2016-10-05 | 深圳市绎立锐光科技开发有限公司 | Projection equipment, projection control system and projection control method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208697A (en) * | 2018-11-22 | 2020-05-29 | 中强光电股份有限公司 | Projection system and control method of driving current thereof |
| US11022864B2 (en) | 2018-11-22 | 2021-06-01 | Coretronic Corporation | Projection system and control method of driving current therefor |
| CN111208697B (en) * | 2018-11-22 | 2021-07-27 | 中强光电股份有限公司 | Projection system and control method of driving current thereof |
| WO2021121300A1 (en) * | 2019-12-19 | 2021-06-24 | 深圳光峰科技股份有限公司 | Current control circuit and method, and projection device |
| CN113253554A (en) * | 2020-02-13 | 2021-08-13 | 中强光电股份有限公司 | Illumination system, illumination control method, and projection apparatus |
| CN113253554B (en) * | 2020-02-13 | 2022-11-08 | 中强光电股份有限公司 | Illumination system, illumination control method, and projection apparatus |
| CN113934091A (en) * | 2020-06-29 | 2022-01-14 | 中强光电股份有限公司 | Illumination system and projection device |
| CN113934091B (en) * | 2020-06-29 | 2023-12-01 | 中强光电股份有限公司 | Illumination system and projection device |
| US11886102B2 (en) | 2020-06-29 | 2024-01-30 | Coretronic Corporation | Illumination system and projection device |
| WO2022002185A1 (en) * | 2020-07-02 | 2022-01-06 | 深圳光峰科技股份有限公司 | Current control method, switching power supply circuit and projection device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018121063A1 (en) | 2018-07-05 |
| CN108255001B (en) | 2021-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108255001A (en) | Optical projection system | |
| CN104898363B (en) | Light-emitting device and relevant projecting system | |
| CN105025279B (en) | A kind of light-source system and projection display equipment | |
| CN105334687B (en) | Optical projection system | |
| CN107621746B (en) | Light emitting device and relevant projecting system | |
| CN101592308B (en) | Light source capable of supplying polychromatic light and method thereof | |
| CN206321932U (en) | A kind of projection display system | |
| CN105022212A (en) | Light source system, projection system and method | |
| CN108957931A (en) | The white balance adjustment method and laser projection device of laser light source | |
| CN101390404B (en) | Method of colour image projection using spatial light modulation and light source modulation | |
| CN103913934A (en) | Projection device | |
| CN105321445A (en) | Display control system and display device | |
| CN102425757B (en) | Light source capable of providing color change light and method thereof | |
| JP7086185B2 (en) | Enhanced white light for projected lighting | |
| CN107765497A (en) | Light-emitting device, optical projection system and image modulation method | |
| CN105676575A (en) | Optical module for projection and lighting device | |
| CN102650815B (en) | Projection device, light source system and improvement method of light source system | |
| CN110187597A (en) | Light supply apparatus and laser-projector | |
| CN205920315U (en) | Light source and relevant projecting system | |
| CN105988272A (en) | Projection system and control method thereof | |
| CN107765498A (en) | A kind of Wavelength converter, light supply apparatus and relevant projecting system | |
| CN109991800A (en) | Light supply apparatus and optical projection system | |
| CN104813228B (en) | Irradiation to the imaging optic element of projector | |
| CN206115129U (en) | Light emitting device and a projection system | |
| CN110753880B (en) | Laser power management in laser projectors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 518055 20-22 Floor, United Headquarters Building, No. 63 Xuefu Road, Yuehai Street, Nanshan District, Shenzhen City, Guangdong Province Applicant after: APPOTRONICS Corp.,Ltd. Address before: 518055 United Headquarters Building, No. 63 Xuefu Road, Yuehai Street, Nanshan District, Shenzhen City, Guangdong Province, 21 and 22 floors Applicant before: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address after: 518055 United Headquarters Building, No. 63 Xuefu Road, Yuehai Street, Nanshan District, Shenzhen City, Guangdong Province, 21 and 22 floors Applicant after: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address before: 518055 Guangdong province Shenzhen Nanshan District Xili town south of Cha Guang road Shenzhen integrated circuit design application Industrial Park 401 Applicant before: APPOTRONICS Corp.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |