CN1868217A - Pixel shifting color projection system - Google Patents
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- CN1868217A CN1868217A CN 200480030469 CN200480030469A CN1868217A CN 1868217 A CN1868217 A CN 1868217A CN 200480030469 CN200480030469 CN 200480030469 CN 200480030469 A CN200480030469 A CN 200480030469A CN 1868217 A CN1868217 A CN 1868217A
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Abstract
A projection system including an integrator with an output end having a matrix of output windows therein. A pattern of red, green and blue monochromatic filters are disposed on the output windows passing a matrix of red, green, and blue monochromatic pixels of light. An imager modulates the pixels of monochromatic light. A light shift device shifts the matrix of monochromatic pixels of light to temporally form a pattern of overlying pixels of light of different colors, viewable as a color image.
Description
The cross reference of related application
The application advocates the rights and interests of following time patent application: sequence number is 60/511, U.S.'s time patent application of 801 (attorney docket is PU030291), its name are called " Pixel Shift Wheelfor Displays Employing Microdisplays (being used to use the pixel-shift runner of the display of micro-display) " and submit on October 16th, 2003; Sequence number is 60/511, U.S.'s time patent application of 872 (attorney docket is PU030292), its name is called " ResolutionEnhanced Dot Sequential Display (having improved the dot-sequential display of resolution) " and submits on October 16th, 2003; And sequence number is 60/511, U.S.'s time patent application of 958 (attorney docket is PU030293), its name is called " Minimum Motion ColorSystem for DLP Like Systems (the minimum movement color system that is used for the DLP type systematic) " and submits on October 16th, 2003; In this mode by reference these applications are incorporated among the application in full.
Invention field
Present invention relates in general to a kind of optical projection system, and more specifically to a kind of optical projection system that comprises micro-display, wherein, the pattern of discrete colour element is offset in described micro-display.
Background technology
Microdisplay projection system is used more and more in coloured image or video projection devices (for example rear-projection TV (RPTV)), and described system uses a reverberation engine or an imager such as digital light pulse (DLP) imager.Provide a light source 10 in an existing optical projection system that goes out as shown in Figure 1, in this example, a UHP lamp produces white light (full color spectrum just).Light from light source 10 passes a colour wheel 20 with a plurality of dichroic filter elements, and described each dichroic filter element allows blue, a green and red central light belt to pass and reflect the light of other colors.Colour wheel 20 is rotated, and the time pattern of blue, green and red light belt can pass colour wheel like this.Colour wheel rotates enough soon usually, so that provide at least one primary colors cycle in each image duration of video image for each primary colors.Make colour wheel rotate sooner or one or more primary colors are used a plurality of filter segments, thereby can produce the color separation pseudomorphism, this makes the beholder perceive the character of the forsequential color of display system.For instance, colour break-up (it also is referred to as the rainbow effect) is to cause owing to the colour wheel of colour flicker with order that light passes a rotation, and when apace when a side direction opposite side of screen is watched, or during apace with the object of sight outside screen of screen shift, colour break-up shows as the flicker of the similar rainbow band of the moment of following usually behind bright object.In addition, the colour edging effect also can produce the color separation pseudomorphism, and the performance of described edge effect is, a kind of appearance flicker in the three primary colors in a forsequential color light beam that passes the place, object forward position that screen moves.
Consistent with the practice of prior art, in whole specification, the part that term " pixel " is used to indicate the very little zone of in the image one or point, a light transmissive counterpart and produces this light transmissive imager.
Yet existing DLP imager exists some problems.Color wheel wastes light be dropped usually because have the colored light that is reflected.And as previously mentioned, color separation or colour break-up pseudomorphism have reduced the picture quality of optical projection system.In addition, each micro mirror mostly is each pivoted (pivot) 12 times in three colour bands of each frame most, and this has limited frame speed and Mechanical Reliability is had adverse effect.Therefore, need a kind ofly to be used to reduce chrominance separation or colour break-up pseudomorphism and/or can to improve resolution and improve the system of reliability.
Summary of the invention
The invention provides a kind of optical projection system that is used for the projection full-color image, its use has reduced mechanical movement and/or has increased the micro-display of resolution.In an one exemplary embodiment, this optical projection system comprises an integrator with an output, comprises an output window matrix in described output.The pixel of an imager light modulated.A light shift device shifting light pixel matrix, so that temporarily form the pattern (this pattern can be used as coloured image and watches) of the overlapping include monochrome pixels of different colouramas, thus and/or light pixel be projected between the position of light pixel of first front projection improve resolution.
Description of drawings
The present invention will be described below in conjunction with accompanying drawing:
Accompanying drawing 1 shows the schematic diagram of an existing digital light pulse (DLP) optical projection system;
Accompanying drawing 2 shows a schematic diagram according to the optical projection system of one exemplary embodiment of the present invention;
Accompanying drawing 3 is end-views that come from the input of the integrator in the optical projection system shown in the accompanying drawing 2;
Accompanying drawing 4 is end-views of the output of the integrator shown in an accompanying drawing 2 and 3, and it shows the pattern of the monochromatic filter on the output window of integrator;
Accompanying drawing 5 shows an input window of the integrator shown in the accompanying drawing 3;
Accompanying drawing 6 shows the pattern by the overlaid pixel of the optical projection system institute projection shown in the accompanying drawing 2;
Accompanying drawing 7 shows the schematic diagram according to the optical projection system of another one exemplary embodiment of the present invention;
Accompanying drawing 8 is end-views that are used for the output of the integrator of optical projection system shown in the accompanying drawing 7, and it shows the pattern of the monochromatic filter on the output window of this integrator;
Accompanying drawing 9 is diagrammatic sketch of the imager output of an optical projection system shown in the accompanying drawing 7, and it shows continuous coloring in;
Accompanying drawing 10 shows the schematic diagram according to the optical projection system of an alternative embodiment of the present invention; And
Accompanying drawing 11 and 12 is respectively the vertical view and the end view of the pixel shift wheel of the optical projection system shown in the accompanying drawing 10.
Embodiment
The invention provides a kind of colour projection system (for example being used for television indicator), because it is to the skew of include monochrome pixels pattern and projection has the video image that strengthens resolution, and/or reduced the mechanical movement of this optical projection system.In an one exemplary embodiment as shown in Figure 2, lamp 110 produces white light, and imports light into an integrator 120 by a parabolic reflector 111.In an one exemplary embodiment, lamp 110 is high strength multi-wavelength output lamps that are adapted at using in the projection display systems.For this purpose, a suitable lamp 110 is UHP lamps, and it is known as the light source that is used for the projection display in the art.The light output of lamp 110 is coupled to integrator 120.Integrator 120 is formed a rectangular cylinder, and it is to export guiding to imager 140 with imager 140 corresponding given rectangular aspect ratio and size with the light of lamp.In this embodiment, integrator 120 has an outer surface 126, and it has basically along its whole reflectance coating such as silver coating that extends.With reference to accompanying drawing 5, the input 122 of integrator 120 has a similar reflectance coating, this reflectance coating is selectively applied, and can make transmission part 125 that the light from lamp passes and one inner and along outer surface 126 catoptrical reflecting parts 123 at outer surface 126 so that form one.Similarly, with reference to accompanying drawing 3, output 128 is formed has a reflecting part 127 and a plurality of transmission part or window 123.Described window 123 can be the aperture that a plurality of permission light pass output 128 internally.Each window 123 has a filter 124, and described filter allows the selected colour or the light of wave band to pass, and stops other colored light to pass simultaneously.For example, as shown in Figure 4, filter 124R allows the red light output of integrator 120 to pass through, and filter 124B allows the blue light output of integrator 120 to pass through, and filter 124G allows the green light output of integrator 120 to pass through.Therefore, those of ordinary skills it is to be understood that the filter 124 by application choice on selected window 123, can make each window 123 light of transmission same color all the time.It is also to be understood that and understand: reflecting part 127 is used for incident light reflected back integrator 120, and on each inner surface reverberation so that light guides to output again and passes window 123 the most at last.This is used to keep the optical attenuation that integrator 120 is passed in brightness and reduction.
As shown in Figure 3, the matrix of output window 123 is positioned on the output 128 of integrator 120, and is arranged as a rectangular mesh.Each output window 123 has a monochromatic filter related with it 124, and this filter is in the transmission red, green, blue colour band only, and reflects other colour band.Described monochromatic filter is well known in the art, and will no longer describe at this.Corresponding to the micro-display of DLP imager, hereinafter with described, and its size is less than or equal to the size of single micro-display to output window 123 one by one.Therefore, each passes through through the monochromatic light pixels that window of optical filtering allows its size to be less than or equal to single micro-display.
In an one exemplary embodiment, as shown in Figure 4, provide described monochromatic filter 124 with the form of a multicolour pattern.First row of output window 123 comprises red filter 124R and green filter 124G alternately, just respectively only by or the filter of transmit red light and green glow.Second row of output window alternately comprises green filter 124G and blue filter 124B, just respectively only by or the filter of transmit green and blue light.The third line is identical with first row; Fourth line is identical with second row; And the rest may be inferred.Each filter 124 is positioned, so that make each red filter 124R and each blue filter 124B adjacent green 124G in the horizontal direction and on the vertical direction.
Refer again to Fig. 2, the output window 123 after the optical filtering passes through the monochromatic light pixels matrixes with different colours by a relay optical system 130, and sends it on the imager 140.Imager 140 comes this monochromatic light pixels matrix of a pixel ground modulation of a pixel-by-pixel basis in response to the vision signal that is addressed to imager 140.In embodiment illustrated and that here describe, imager 140 is digital micro-displays (DMD), and DLP imager that comprises rectangle micro mirror grid more specifically, this imager alternately carries out deflection or makes described light pixel deflection leave projection path this light pixel that incides on the micro mirror along projection path according to the signal that is provided for the pixel of imager.Each micro mirror predetermined times (just having predetermined figure place in a modulation period) that is positioned is so that modulate the intensity of this pixel of this frame.Utilization is carried out temporal modulation along the part of the light that projection path is deflected to described pixel.For example, in a modulation period, have 12 micro mirror and will open or close (that is to say that this micro mirror will be pivoted to open position or off-position 12 times) 12 times.The light pixel of half that has that 12 and be opened 6 times pixel or micro mirror have projection maximum intensity.Therefore, imager 140 is along modulated in time monochromatic light pixels matrix of projection path deflection of minimum movement optical projection system.
A relay mirror 150 is positioned in the projection path, so that the monochromatic light pixels matrix after will modulating the time reflexes to a projection lens system 160, described projection lens system then is projected in each light pixel on the screen (not shown), to form a visual picture.Described relay mirror 150 is configured to very little angle of pivoted, so as on screen with location of pixels of described pixel vertical shift.Therefore, continuous light pixel is red in first pixel position, and is green after matrix is offset.Described skew takes place in single frame, so human eye mixes two light pixels, thereby forms a single light pixel that comprises ruddiness and green glow simultaneously.When solid white image of projection, this pixel will become cyan (R/G), as shown in Figure 6.On vertical adjacent pixels position, before speculum is moved and afterwards, continuous green and red pixel are by projection respectively.On horizontal adjacent pixels position, before speculum is moved and afterwards, continuous green and blue pixel are by projection respectively.Therefore, because the vertical shift of the pixel that speculum 150 produces, a pure white image will alternately produce the row of cyan (green and red) and the row of yellow (green and blue), as shown in Figure 6.Because these are listed in a pixel is only arranged on the width, they are mixed by human eye, and after the eyes mixing of adjacent pixels by the beholder, a coloured image will be projected so that produce a full-color image.Like this, for each frame of video, described micro mirror only need be finished two modulation periods, rather than with three different colour projections required three modulation periods on each location of pixels.Equally, during a frame of video, described relay mirror also only needs pivoted once, and also only needs very little adjusting for offset pixels on screen.This minimum movement arrangement has reduced power consumption and has increased reliability and may improve frame speed.
An alternative embodiment of the present invention is shown in Figure 7.The optical projection system of this replacement comprises a lamp 110, and it is used to launch the white light by optical coupled to an integrator 120, and described integrator 120 exports light to a micro-display 32 by an imaging len 130.Light from micro-display 32 passes projecting lens 160 of a shift plate 34 arrival, and described lens 160 export image to a screen (not shown).To be elaborated to those parts different in this system below with previous embodiment.
The micro-display 32 of present embodiment is digital light pulse (DLP) micro-display with a plurality of micro mirrors, and described each micro mirror is corresponding to a pixel in the optical projection system.Should be understood that each window 123 has a filter 29 that is applied on its output, described window always is selected to a micromirror with the rayed micro-display 32 of same color.As known in the art, described micro-display 32 is suitable for modulating each pixel with incoming video signal.The pixel output of micro-display 32 is then by a shift plate 34.This shift plate 34 is made of the light transmitting material with selected thickness, and this material and light path form certain angle, and be installed into can be between several outgoing positions pivoted slightly.Described shift plate 34 can pivoted so that by the amount of refraction, for example in the length of 1/2nd or pixels of its output place skew with a hope of output image skew.The output that projecting lens 160 receives from shift plate 34, and it is projected on the screen.
As shown in Figure 8, filter 29 is arranged in the following order: in delegation, following a blue filter 29B after the red filter 29R, is a green filter 29G afterwards.Along this row, this pattern then continues with red, blue, green.Should be understood that array shown in Figure 8 nothing but the sequential nature of for example understanding this arrangement, and can create the array of virtually any size based on the demand of imager and system.Second row is a green filter 29G when beginning and then continues according to red, blue, green color sequence.At last, be a blue filter 29B when the third line begins, and continue by same pattern afterwards, just green, red, blue, thus filled whole array with filter.
In use, micro-display 32 receives the light of constant color respectively at each micro mirror place, modulate each pixel according to video input signals then.Referring now to Fig. 9, it shows the continuous input 37 of the projecting lens 160 during continuous modulation intervals.In these figure, R represents a red pixel, and B represents a blue pixel, and G represents a green pixel.After first modulation intervals, shift plate 34 is tilted slightly, this feasible selected spacing of light shift that is incident on the projecting lens 160, and in the present embodiment, this spacing is the length of two pixels or the length of a micro mirror.In second modulation intervals, the location of pixels that before receives ruddiness will receive green glow now, and the pixel that receives green glow before will receive blue light.Similarly, those pixels that receive blue light before will receive ruddiness.In the 3rd modulating time interval, shift plate 34 is moved once more, thereby makes another micromirror pitch of light shift, and last primary colors is added on each location of pixels.Then, shift plate 34 returns image shift to a pel spacing or half micromirror pitch, and repeats this processing, so as formerly between the initial pixel with each irradiation in the middle of the three primary colors, in colleague mutually the interpolation pixel.Do like this and have such benefit: show in every line pixel with the number of pels per line that doubles every capable micro mirror number.Then shift plate 24 can be offset downward a pixel, so that come to fill between each row by repeating aforesaid two treatment steps.
In another alternative embodiment, described filter can be removed, so that the output of integrator is configured to as shown in Figure 3, thereby integrator makes the incident light of all colours pass each window 28, and colour wheel can be added again in this system and according to mode shown in Figure 1 and locatees.In this embodiment, various honorable looks pass integrator 120 according to the sequence of positions of colour wheel.Micro-display 32 is at the whole array of each each colour of modulation intervals internal modulation, and at the whole array of the next continuous multicolor of continuous modulation intervals internal modulation, and at last at the 3rd colour of the continuous modulation intervals internal modulation of the next one.This makes it possible to each colour each pixel that the window 28 by integrator limits be carried out continuous irradiation, does not need mobile shift plate 34 so that form a full-color image.Then, shift plate 34 is tilted or moves, so that fill the extra pixel that is limited by the reflecting part on the integrator output terminal 27, so that improve resolution.
Present embodiment advantageously makes a micro mirror array in the micro-display sequentially shine a relatively large array on the projecting lens, thereby has improved the resolution of system.
In another alternative embodiment, as shown in figure 10, an optical projection system comprises a lamp 110 that is used to launch by the white light of optical coupled to an integrator 120, and described integrator 120 exports light on a TIR prism 31 and the micro-display 32 to by an imaging len array 130.Light from micro-display 32 arrives one or more pixel shift wheel 234 and projecting lens 160 by TIR prism 31, and this projecting lens exports image to a screen (not shown).To describe in detail the peculiar assembly of this optical projection system now.
Replacement is shown in Figure 7 and in above-described shift plate 34, and present embodiment has a shift wheel 234, and its function is to be offset monochromatic discrete pixel by refraction.As shown in figure 11, one or more pixel shift wheel 234 comprise one or more refraction sections 52 separated from one another, and they are separated by one or more non-refraction sections 51 on angle direction.All locations of pixels that pixel shift wheel 234 skews are modulated by micro-display 32 so that the neighbor that other are colored navigates on the same pixel position, thereby obtain all three primary colors, and then reduce the color separation pseudomorphism on each location of pixels.
As shown in figure 12, described pixel shift wheel 234 is around axle 235 pivoted, and axle 235 is with export 237 from the light of micro-display 32 not parallel.On the contrary, it is 237 angled that pixel shift wheel 234 and light are exported, and this makes light output be refracted, thereby each locations of pixels in the light output 237 is offset.In addition, pixel shift wheel 234 is offset roughly the same side-play amount and direction based on the characteristic of each refraction section 52 with all locations of pixels.Along with pixel shift wheel 234 is rotated or rotation around axle 235, this different angles section of taking turns is positioned on the path of light output 237, thereby produces different offset directions and/or side-play amount.Described side-play amount and or direction depend on the resolution of described one or more refraction section, light output 237 is advanced by these refraction sections.If the frequency that skew takes place is enough high, human eye will carry out integrated to all results through the location of pixels of skew.After one or more shift wheel 234 were passed in light output 237, projecting lens 160 received described light output and it is projected on the screen (not shown).In addition, can be by pixel space being displaced to the resolution that improves shown image without the position between each location of pixels of the image that is offset.
In use, owing to use the filter pattern shown in Fig. 8, micro-display 32 shown in Figure 10 receives the light of color constancy on each corresponding micro mirror, and micro-display 32 is modulated each pixel according to video input signals subsequently.Referring now to Fig. 9, there is shown continuous projecting lens input (the light output 237 after just passing pixel shift wheel 234) at continuous modulation intervals device.In these legends, R represents a red pixel, and B represents a blue pixel, and G represents a green pixel.Punctual with 237 pairs of light outputs when a non-refraction section 51, each pixel enters projecting lens under situation about not being offset.After non-refraction section 51, pixel wheel 234 is rotated, so that the first refraction section 52 aims at output light 237, thus feasible selected spacing of light shift that is incident on the projecting lens 160, this spacing is two length in pixels in the present embodiment.For this first refraction section 52, the location of pixels that before receives ruddiness will receive green glow now, and the pixel that receives green glow before will receive blue light now.Similarly, before pixel shift wheel 234 rotations, receive those pixels of blue light, will receive ruddiness now.For the second refraction section 52 different with the first refraction section, pixel shift wheel 234 is rotated once more, thereby light is offset, so that last primary colors is added on each location of pixels.
Alternatively, third reflect section (not shown) on one or more pixel shift wheel 234 returns image shift to a pel spacing or about half micromirror pitch, and repeat above-mentioned processing, so as formerly between the initial pixel with each irradiation in the middle of the three primary colors, in colleague mutually the interpolation pixel.Do like this and have such benefit: show in every line pixel with the number of pels per line that doubles every capable micro mirror number.Fourth reflect section (not shown) on one or more pixel shift wheel 234 can be offset downward a pel spacing, to come to fill between each row by two treatment steps before repeating.
In an alternative embodiment, filter can be removed, and makes the output of integrator that the incident light of all colours is passed each window 28, and colour wheel can be added again in this system and according to mode shown in Figure 1 and is positioned.In this embodiment, each honorable look passes integrator 120 successively according to the position of colour wheel.Micro-display 32 is at the whole array of a kind of colour of each modulation intervals internal modulation, and at the whole array of the next continuous multicolor of continuous modulation intervals internal modulation, and last at continuous the 3rd colour of modulation intervals internal modulation of the next one.This makes it possible to each pixel of being limited by the window 28 of integrator 120 with each colored Continuous irradiation, so that by using one or more foregoing pixel shift wheel 234 to form a full-color image, and then improves resolution.
Above described and implemented possibilities more of the present invention.Within category of the present invention and spirit, many other embodiment are possible.Therefore, the description before this means should be considered to illustrate rather than be restrictive, and scope of the present invention is provided by appended claims and equivalents thereof.
Claims (18)
1. optical projection system comprises:
Integrator with output;
The matrix of the output window that output that is positioned at this integrator brings out;
Redness on the matrix of this output window, green and blue monochromatic filter pattern, it is by redness, green and a blue monochromatic light pixels matrix;
An imager that is used to modulate this monochromatic light pixels matrix; And
A light shift equipment, it is used to be offset this monochromatic light pixels matrix, so that form the pattern of the overlapping include monochrome pixels of different colouramas in time, this pattern can be counted as a coloured image.
2. optical projection system as claimed in claim 1, wherein said light shift equipment be one around the pivotally supported speculum of low-angle, this angle is enough to location of pixels of monochromatic light pixels skew.
3. optical projection system as claimed in claim 1, wherein said light shift equipment are shift wheel.
4. optical projection system as claimed in claim 3, wherein said shift wheel are included in refracted portion continuous on the angle and non-refracted portion.
5. optical projection system as claimed in claim 4, wherein said shift wheel is rotated around an axle, described axle is exported at an angle with the light of integrator, and described refracted portion comprises the optical transmission material, and the thickness of described material and this optical transmission material reflects the incident light on it pro rata.
6. optical projection system as claimed in claim 1, wherein 1/4th output window has a filter of first colour and comes down to equidistant apart, an output window of/4th has a filter of second colour and comes down to equidistant apart, an output window of/2nd has a filter of the 3rd colour and comes down to equidistant apart, and each window of filter with first and second colours window with a filter with the 3rd colour on vertical and horizontal direction is adjacent.
7. optical projection system as claimed in claim 6, wherein first colour is red, second colour is blue, and the 3rd colour is green.
8. optical projection system as claimed in claim 1, the pattern of wherein said filter comprises row alternately, first row has red filter and green filter alternately, second row has green filter and blue filter alternately, and the red filter and the blue filter of each row are adjacent with green filter in vertical direction.
9. optical projection system as claimed in claim 1, wherein said imager are DLP micro-displays with rectangle micro mirror grid.
10. optical projection system as claimed in claim 9, wherein said output window is littler than described micro mirror.
11. an optical projection system, it comprises:
A light source;
An integrator, its optical coupled has a window array to this light source and at output, so that form a discrete light pel array;
A micro-display, its optical coupled is to this discrete light pel array, to be used to modulate each light pixel on the correspondence position that is incident on this micro-display;
A pixel shift wheel, its optical coupled is to the optics output of this micro-display, to be used for being offset in time light output.
12. optical projection system as claimed in claim 11, wherein said micro-display comprise a micro mirror array, and are projected to from each discrete light pixel of the individual window of this integrator on the micro mirror of a correspondence and by this micro mirror and modulate.
13. optical projection system as claimed in claim 11, wherein said shift wheel is included in each several part continuous on the angle, wherein comprises at least one non-refracted portion and one or more refracted portion.
14. optical projection system as claimed in claim 12, each window of wherein said integrator is covered by a filter so that the different monochromatic pixel of projection, and described shift wheel be set to different colored continuous pixels be displaced to same position.
15. an optical projection system comprises:
A light source;
An integrator, its optical coupled has a window array to this light source and at output, so that form a discrete light pel array;
A micro-display, its optical coupled is to this discrete light pel array, to be used to modulate each light pixel on the correspondence position that is incident on this micro-display;
A shift plate, its optical coupled is to the light output of this micro-display, to be used for being offset in time light output.
16. optical projection system as claimed in claim 15, wherein said micro-display comprise a micro mirror array, and are projected to from each discrete light pixel of the individual window of this integrator on the micro mirror of a correspondence and by this micro mirror and modulate.
17. optical projection system as claimed in claim 15, each window of wherein said integrator is covered by a filter so that the different monochromatic pixel of projection, and described shift plate can pivoted, so as with different colored continuous pixels be displaced to same position.
18. optical projection system as claimed in claim 15, wherein said shift plate is pivotable, so that will be projected in from the light output pixel of described micro-display between the discrete locations of pixels by the array of this shift plate position projection formerly.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US51180103P | 2003-10-16 | 2003-10-16 | |
| US60/511,872 | 2003-10-16 | ||
| US60/511,801 | 2003-10-16 | ||
| US60/511,958 | 2003-10-16 |
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| Publication Number | Publication Date |
|---|---|
| CN1868217A true CN1868217A (en) | 2006-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200480030469 Pending CN1868217A (en) | 2003-10-16 | 2004-10-15 | Pixel shifting color projection system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621698A (en) * | 2012-03-31 | 2012-08-01 | 福建网讯科技有限公司 | Optical projection system for improving stray light near projection picture |
| CN105467580A (en) * | 2014-09-30 | 2016-04-06 | 精工爱普生株式会社 | Optical device and image display device |
| WO2018121058A1 (en) * | 2016-12-28 | 2018-07-05 | 深圳市光峰光电技术有限公司 | Light source system and display device |
| CN109407319A (en) * | 2018-11-30 | 2019-03-01 | 深圳点石创新科技有限公司 | Head-up-display system and vehicle |
| CN109844636A (en) * | 2016-10-18 | 2019-06-04 | Nec显示器解决方案株式会社 | Projector and image display method |
| US10739667B2 (en) | 2018-01-26 | 2020-08-11 | Coretronic Corporation | Projector, optical engine, and pixel offset device |
| CN114208157A (en) * | 2019-09-04 | 2022-03-18 | Jvc建伍株式会社 | Display system and display method |
| CN115240592A (en) * | 2022-09-20 | 2022-10-25 | 北京数字光芯集成电路设计有限公司 | Micro display chip image display method and device based on pixel movement |
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- 2004-10-15 CN CN 200480030469 patent/CN1868217A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621698A (en) * | 2012-03-31 | 2012-08-01 | 福建网讯科技有限公司 | Optical projection system for improving stray light near projection picture |
| CN105467580A (en) * | 2014-09-30 | 2016-04-06 | 精工爱普生株式会社 | Optical device and image display device |
| CN105467580B (en) * | 2014-09-30 | 2019-11-01 | 精工爱普生株式会社 | Optical device and image display device |
| CN109844636A (en) * | 2016-10-18 | 2019-06-04 | Nec显示器解决方案株式会社 | Projector and image display method |
| CN109844636B (en) * | 2016-10-18 | 2021-06-29 | Nec显示器解决方案株式会社 | Projector and image display method |
| WO2018121058A1 (en) * | 2016-12-28 | 2018-07-05 | 深圳市光峰光电技术有限公司 | Light source system and display device |
| US10739667B2 (en) | 2018-01-26 | 2020-08-11 | Coretronic Corporation | Projector, optical engine, and pixel offset device |
| CN109407319A (en) * | 2018-11-30 | 2019-03-01 | 深圳点石创新科技有限公司 | Head-up-display system and vehicle |
| CN114208157A (en) * | 2019-09-04 | 2022-03-18 | Jvc建伍株式会社 | Display system and display method |
| CN114208157B (en) * | 2019-09-04 | 2024-02-09 | Jvc建伍株式会社 | Display system and display method |
| CN115240592A (en) * | 2022-09-20 | 2022-10-25 | 北京数字光芯集成电路设计有限公司 | Micro display chip image display method and device based on pixel movement |
| CN115240592B (en) * | 2022-09-20 | 2022-12-02 | 北京数字光芯集成电路设计有限公司 | Micro-display chip image display method and device based on pixel movement |
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