CN101082762B - Projection display adopting line type light modulator - Google Patents
Projection display adopting line type light modulator Download PDFInfo
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- CN101082762B CN101082762B CN2007101379119A CN200710137911A CN101082762B CN 101082762 B CN101082762 B CN 101082762B CN 2007101379119 A CN2007101379119 A CN 2007101379119A CN 200710137911 A CN200710137911 A CN 200710137911A CN 101082762 B CN101082762 B CN 101082762B
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- projection display
- linear light
- light
- light beams
- unit
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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
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
- G02B27/102—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources
- G02B27/1026—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources for use with reflective spatial light modulators
- G02B27/1033—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources for use with reflective spatial light modulators having a single light modulator for all colour channels
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- 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
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0808—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more diffracting elements
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- 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
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/105—Scanning systems with one or more pivoting mirrors or galvano-mirrors
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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]
- H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
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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]
- H04N9/3197—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using light modulating optical valves
Abstract
A projection display projects color images on a screen. The projection display includes: an illuminating unit which emits a plurality of linear beams that are in parallel to each other; a scroll unit which scrolls the plurality of linear beams; a line type light modulator which modulates the plurality of linear beams according to image signals; and a scan unit which scans the plurality of linear beams in a direction perpendicular to the scrolling direction.
Description
Technical field
The present invention relates to a kind of projection display, this projection display is incident upon it color display on screen then by modulate a plurality of monochromatic light according to image information, more particularly, relates to a kind of projection display that adopts line type light modulator.
Background technology
A projection display comprises: according to the photomodulator of image information light modulated be used for launching the lighting unit of light modulated.Traditional projection display utilizes two-dimensional light modulator, as liquid crystal panel or Digital Micromirror Device (DMD).Red-emitting, green glow and blue light that lighting unit is continuous.Red, green and blue light is modulated by two-dimensional light modulator, is projected onto then on the screen.
The lighting unit of conventional projection display comprises: the light source and the color-separated unit of emission white light, as colour wheel, it is separated into red, green and blue light with white light.For example the big light source of metal halide lamp or ultrahigh pressure mercury lamp is as light source.Therefore, the size of lighting unit is just very big, and this is disadvantageous and the manufacturing of restriction compact projection display.In addition, because photomodulator is isolated and be incident to red, green and blue light from white light, light utilization efficiency is low.
Summary of the invention
Exemplary embodiment of the present invention provides a kind of can form the undersized projection display, and it comprises the line type light modulator with high light utilization efficiency.
According to an aspect of the present invention, provide a kind of on screen the projection display of projection of color images.This projection display comprises: lighting unit, launch a plurality of linear light beams parallel to each other; Scrolling unit (scroll unit) is used for these linear light beams of scrolling; Line type light modulator is modulated these linear light beams according to picture signal; Scanning element, these linear light beams of scanning on the direction vertical with the scrolling direction.
Lighting unit can comprise: each all launches a plurality of LASER Light Source of light beam; A plurality of beam shaping elements, it is used for changing these light beams into linear light beam that preset width is arranged.
The projection display can also comprise: projecting lens unit is used for throwing a plurality of linear light beams after the modulation to screen.Scanning element can be arranged between projecting lens unit and the screen.Scanning element can be arranged on the focus of projecting lens.
Scrolling unit (scroll unit) can comprise the square prism of rotation.
According to a further aspect in the invention, provide a kind of on screen the projection display of projection of color images.This projection display comprises: lighting unit, a plurality of linear light beams parallel to each other of emission on first direction; Line type light modulator is modulated these linear light beams according to picture signal; The light path converting unit is transformed into these linear light beams on the zone of a plurality of photomodulators; Scanning element, these linear light beams of scanning on the second direction vertical with first direction.
The light path converting unit can comprise: a plurality of first diffraction instruments corresponding with these linear light beams, and it electrically changes diffraction direction; A plurality of second diffraction instruments, it electrically changes diffraction direction, is parallel to each other being converted on first direction by these linear light beams of a plurality of first diffraction instrument diffraction.
Lighting unit can comprise: each all launches a plurality of LASER Light Source of light beam; Beam shaping element is a plurality of linear light beams with preset width with these Beam Transformation.
Scrolling unit (scroll unit) can comprise the square prism of rotation.
Description of drawings
Above-mentioned and other illustrative aspects of the present invention will be by being clear the detailed description of its exemplary embodiment with reference to appended accompanying drawing, wherein subsequently more:
Figure 1 shows that the structural drawing of the projection display according to an embodiment of the invention;
Figure 2 shows that the planimetric map of the photomodulator that uses in the projection display shown in Figure 1;
Fig. 3 A to 3C is depicted as the running key diagram of the scrolling unit (scroll unit) in the projection display shown in Figure 1;
Figure 4 shows that the photomodulator of one exemplary embodiment and the running key diagram of optical path separator according to the present invention;
Figure 5 shows that the skeleton view of vibration deflector (shaking deflector) as the scanning element example;
Fig. 6 A to 6C is depicted as the projection display shown in Figure 1 display image on screen;
Figure 7 shows that the structural drawing of the projection display of another exemplary embodiment according to the present invention;
Fig. 8 A to 8C is depicted as the running key diagram of the light path converting unit of exemplary embodiment of the present invention;
Fig. 9 A to 9C is depicted as the projection display shown in Figure 7 display image on screen;
Figure 10 A to 10C is depicted as the running key diagram according to the beam shaping element of exemplary embodiment of the present invention;
Embodiment
Now with reference to the accompanying drawing that shows exemplary embodiment of the present, more detailed description the present invention.
Figure 1 shows that the structural drawing of the projection display according to an embodiment of the invention.With reference to Fig. 1, comprise according to the projection display of this embodiment: lighting unit 100, scrolling unit (scroll unit) 120, photomodulator 130 and scanning element 150.
The projection display according to this embodiment comprises line type light modulator 130.The photomodulator of line type light modulator 130 for having one dimension light modulation portion 131 as shown in Figure 2 is different from traditional two-dimensional light modulator, as LCD or DMD.Grating light valve (grating light valve, GLV), the Samsung optical modulator (Samsung optical modulator, SOM) and the grid electric system (gratingelectro-mechanical system GEMS) is the example of line type light modulator.GLV is with the direct of travel of optical diffraction control light, and light modulation portion 131 comprises and is used for catoptrical lens array.Lens array comprises fixed mirror and the flexible mirror of arranging with alternate mode.Come mobile flexible mirror can change the amount of optical diffraction with electric signal.That is to say that if when fixed mirror and flexible mirror are positioned at same plane simultaneously, incident light just all is reflected.When if flexible mirror is arranged on the plane different with fixed mirror, reflection ray is towards different angle diffraction, and its angle of diffraction depends on that it still is on the fixed mirror that light incides on the flexible mirror.Because GLVs is known in this field, so omit at this about the specific descriptions of grating light valve (GLV).Hereinafter, the embodiment of employing grating light valve (GLV) as photomodulator 130 will be described.
The a plurality of linear light beams of lighting unit 100 emissions: red (R), green (G) and blue (B).Red (R), green (G), blue (B) three kinds of linear light beams are parallel to each other.That is to say, as linear light beam R, when G, B project on the screen 160, linear light beam R, G, B is on the first direction X or parallel on the second direction Z.If as this linear light beam R, when G, B finally were projected onto on the screen 160, linear light beam R, G, B be on the first direction X or parallel on the second direction Z, these linear light beams R, and G, all light paths of B process also all are parallel.Hereinafter, project linear light beam R on the screen 160, G, the situation of B with describing with first direction X.
Diffractive-optical element (DOEs) shown in Figure 10 A, can be used as beam shaping element 102R, 102G, and 102B., any element that light can be shaped as the linear light beam of preset width can be used as beam shaping element.
Here, term " linear light beam " is used for the light beam of current description is different from the surface light of the projection display that comprises two-dimensional light modulator; Term " linear light beam " is not meant the strict one-dimensional linear light beam that does not have width.That is to say, be not to mean with first direction X to project the linear light beam R that is parallel to each other on the screen 160, G, and B does not have thickness on second direction Z.In addition, compare with the light beam of illumination conventional two-dimensional photomodulator, linear light beam is the light beam of light modulation portion 131 of line type light modulator 130 of can throwing light on.Figure 10 A to 10C is depicted as the example that adopts the beam shaping element 102R that contains diffractive-optical element (DOE) ruddiness to be shaped as linear light beam R.Be shaped as linear light beam R from the light of light source 101R emission by beam shaping element 102R, linear light beam R has the width in 1/3rd zone of the light modulation portion 131 that can throw light on by divided light modulator 130 on first direction Y and the width of second direction Z with light modulation portion 131 of energy illumination light modulator 130.
X-block prism 110 (x-cube prism) makes by beam shaping element 102R, 102G, and the linear light beam R of 102B, G and B are parallel to each other on the Y direction.If light source 101R, 101G, 101B and beam shaping element 102R, 102G, 102B are set to be parallel to each other on the Y direction, so just do not need to install x-block prism 110 (x-cube prism) again.
Scrolling unit 120 (scroll unit) scrolling linear light beam R on direction Y, G, B.In this embodiment, use square prism 121 as shown in Figure 1.Although do not show in the drawings, a driver element that drives square prism 121 rotations is necessary.Fig. 3 A to 3C has illustrated square prism 121 scrolling linear light beam R, G, the operation of B.With reference to figure 3A, parallel linear light beam R on the Y direction, G, B impinge perpendicularly on the plane of incidence of square prism 121.Light beam by square prism 121 to be being R on the Y direction, G, and the order of B is incident to photomodulator 130.When square prism 121 rotates, linear light beam R, G, the incident angle of B phase square shaped prism 121 changes.Therefore, with reference to figure 3B, linear light beam R, G, B to be being B on the Y direction, R, and the order of G is incident to photomodulator 130.In addition, when square prism 121 was further rotated, linear light beam R, G, B to be being G on the Y direction, B, and the order of R is incident to photomodulator 130.In Fig. 3 A to 3C, show, the linear light beam R of embodiment, G, the position of B has all changed.And along with the rotation of square prism 121, linear light beam R, G, B also continue scrolling on the Y direction.Scrolling unit 120 (scroll unit) is not limited to example as shown in fig. 1.
In photomodulator 130, when fixed mirror and flexible mirror all were positioned at same plane, majority of illumination light was reflected and is not diffracted.Therefore, its projection light is 0 grade of light as shown in Figure 4, and ± amount of 1 grade of light is very little.When flexible mirror moved and be aligned on the plane different with the plane of fixed mirror arrangement, illumination light was just by flexible mirror and fixed mirror diffraction.At this moment, most of projection lights are ± 1 grade of light, and the amount of 0 grade of light is very little.According to present embodiment, 0 grade of light is used for display image, thereby has formed modulated beam of light.That is to say when fixed mirror and flexible mirror are positioned at same plane, on screen 160, show bright pixel.When fixed mirror and flexible mirror are not positioned at same plane, on screen 160, show dark pixel.
In order to reduce its size, scanning element 150 can be installed on the focal position of projecting lens unit 140 and throw linear light beam R, G, and B is to screen 160.According to GLV as the projection display of photomodulator 130,0 grade of light is as projection light, therefore, minute surface 151a can be formed on the part of the oscillating component 151b that 0 grade of light incides.Therefore ,-1 and+1 grade of light be not projected onto on the screen 160, and 0 grade of light projects on the screen 160.
The course of work that below description is had the projection display of said structure.
From light source 101R, it is red that 101G, 101B send, green, blue light, and respectively by beam shaping element 102R, 102G, 102B convert the linear light beam R of preset width, G, B to.Linear light R, G, B is arranged parallel to each other on the Y direction, thus by light-combining prism 110 (x-cube prism), linear light R, G, B incide on the light modulation portion 131 of photomodulator 130.Linear light beam R, G, B incide on the square prism 121 of rotation.Shown in Fig. 3 A to 3C, when 121 rotations of square prism, linear light beam R, G, B is at scrolling and inciding on the photomodulator 130 continuously on the Y direction.Photomodulator 130 comes modulation linearity light beam R, G, B by color elements according to image information.The linear light beam R that modulated, G incides on the scanning element 150 behind the B process projection lens unit 140.Provide current to drive coil part 151e, therefore, oscillating component 151b vibrates with a predetermined resonant frequency, by the linear light beam R that minute surface 151a reflects, and G, B is scanned on second direction Z.Therefore, shown in Fig. 6 A to 6C, linear light beam R, G, the continuous scrolling of B is also when being scanned on the screen 160 when screen 160 tilts.Photomodulator 130 is synchronous with scrolling unit 120 and scanning element 150, like this can be according to red, and green, blue images information, modulation linearity light beam R simultaneously, G, B make it in (then with directions X as in the incident direction on the screen 160) rolling on the Y direction with scan on second direction Z.
According to above operation, coloured image can adopt line type light modulator 130 to show.
Fig. 7 is the structural drawing of the projection display according to another embodiment of the present invention.As shown in Figure 7, comprise a lighting unit 100, launch a plurality of linear light beam R that on the Y direction, are parallel to each other, G, B according to the projection display of this embodiment; One line type light modulator 130 is modulated this a plurality of linear light beam R, G, B according to picture signal; One light path converting unit 200, continue with a plurality of linear light beam R, G, B are input on a plurality of zones of photomodulator 130; One scan unit 150, the linear light beam R after scanning modulation on the Z direction, G, B.In fact lighting unit 100, photomodulator 130, scanning element 150 and projecting lens unit 140 with shown in Figure 1 the same, therefore, no longer are described in detail here.
According to the projection display of this embodiment, a plurality of linear light beam R, G, a plurality of regional 131-1 of the light modulation portion that incides photomodulator 130 131 that B continues, 131-2 is on the 131-3.That is to say, a plurality of linear light beam R, G, B incide on the light modulation portion 131 simultaneously.But, incide a plurality of regional 131-1 of light modulation portion 131,131-2, the color of the light on the 131-3 is along with the time changes.For this reason, light path converting unit 200 comprises the first diffraction instrument 210R, 210G, and the 210B and the second diffraction instrument 220-1,220-2,220-3, as shown in Figure 8.The first diffraction instrument 210R, 210G, 210B correspond respectively to linear light beam R, G, B.The first diffraction instrument 210R, 210G, the 210B and the second diffraction instrument 220-1,220-2, the diffraction deflection of 220-3 can be regulated in electricity consumption.For example, thus the orientation of liquid crystal layer can utilize electric field to change to regulate diffraction direction.Diffraction instrument is that this area is very known, therefore, omits its detailed description here.The second diffraction instrument 220-1,220-2,220-3 will be by the first diffraction instrument 210R, 210G, the linear light R of 210B diffraction, G, B convert on the Y direction parallel to each other.The second diffraction instrument 220-1,220-2,220-3 correspond respectively to the regional 131-1 of light modulation portion 131,131-2,131-3.
Shown in Fig. 8 A, as the first diffraction instrument 210R, 210G, 210B correspond respectively to the second diffraction instrument 220-1,220-2, and during 220-3, linear light beam B, G, R can incide regional 131-1, and 131-2 is on the 131-3.Shown in Fig. 8 B, as the first diffraction instrument 210R, 210G, 210B correspond respectively to the second diffraction instrument 220-2,220-1, and during 220-3, linear light beam G, B, R can incide regional 131-1, and 131-2 is on the 131-3.In addition, shown in Fig. 8 C, as the first diffraction instrument 210R, 210G, 210B correspond respectively to the second diffraction instrument 220-1,220-3, and during 220-2, linear light beam R, B, G can incide regional 131-1, and 131-2 is on the 131-3.By repeating above three kinds of situations, linear light beam R, G, B can continue shines regional 131-1, and 131-2 is on the 131-3.
Below, detailed description is had the course of work of the projection display of above structure.
From light source 101R, it is red that 101G, 101B send, green, blue light, and respectively by beam shaping element 102R, 102G, 102B convert the linear light beam R of preset width, G, B to.Linear light R, G, B are arranged in and are being parallel to each other on the Y direction and are inciding on the light modulation portion 131 of photomodulator 130 by x-cube of (x-cube) prism 110.Linear light beam R, G, B is incided on the light path converting unit 200.In addition, shown in Fig. 8 A to 8C, by regulating the first diffraction instrument 210R, 210G, the 210B and the second diffraction instrument 220-1,220-2, the diffraction direction of 220-3, linear light beam R, G, B incide the regional 131-1 of photomodulator 130, and 131-2 is on the 131-3.Photomodulator 130 comes modulation linearity light beam R, G, B by color elements according to image information.The linear light beam R that modulated, G incides on the scanning element 150 behind the B process projection lens unit 140.After providing current to drive coil part 151b, oscillating component 151c vibrates with a predetermined resonant frequency, by the linear light beam R that minute surface 151a reflects, and G, B is scanned on second direction Z.Therefore, shown in Fig. 9 A to 9C, linear light beam R, G, B are scanned on the screen 160.
According to the above-mentioned course of work, coloured image can adopt line type light modulator 130 to show.According to said structure, do not need the light separative element, for example colour wheel is used for separate red from white light, and is green, blue light.Therefore, the structure of lighting unit 110 can be simplified.Especially, if adopt emission red, green, the LASER Light Source of blue light is used as light source 101R, 101G, and 101B, the structure of lighting unit 100 can also more be simplified.
In traditional projection display, green by separate red from white light, blue light and the modulation and the projection light that continue come color display on screen, and for example, when ruddiness is launched, isolated green glow and blue light just are dropped, and therefore, its light utilization efficiency is just very low.Yet red according to the projection display of the present invention, green, blue light is launched simultaneously, and light utilization efficiency has just improved.
In addition, according to traditional projection display, it comprises a two-dimensional light modulator, and lighting unit must produce the planar light of a constant light brightness, and the optical element that produces this effect must be installed.Yet according to the projection display of the present invention, linear light beam R, G, B are at scrolling on the first direction Y (Fig. 6 A to 6C) or switch (Fig. 9 A to 9C) and scanning simultaneously on the Z direction, therefore, just do not need to produce planar light.In addition, because linear light beam R, G, B be by scrolling unit 120 scrolling (with the incident direction of directions X as screen 160) continuously on the Y direction, also just do not need to be formed on the linear light beam R that (perhaps directions X) on the Y direction has constant light brightness, G, B.Therefore the structure of lighting unit 100 can be simplified, and also can make to such an extent that size is little.
In addition, according to the of the present invention one typical projection display, use scrolling unit 120 and scanning element 150 linear light beam R, G goes up vibration with the time on the B space, and therefore, the phase place that arrives the laser beam of screen 160 becomes irregular.Therefore as light source 101R, 101G, when 101B was LASER Light Source, the speckle problem that is caused by the coherence of laser beam had obtained solution.
As mentioned above, according to the present invention, can make the compact projection display that has high optics utilization factor and adopt the line type light modulator color display.
Although the present invention is described by last exemplary embodiment, those of ordinary skill in the art should be appreciated that under the situation of the spirit of the present invention that does not break away from the claims qualification, can make various changes to form and details.
The cross reference of related application
It is the right of priority of the korean patent application of 10-2006-0063488 that the application requires to enjoy the application number of submitting to Korea S Department of Intellectual Property on July 6th, 2006, and the application number that on May 22nd, 2006 submitted to United States Patent (USP) trademark office is 60/802, the rights and interests of 165 U.S. Patent application, these application full contents of mentioning are in this combination as a reference.
Claims (10)
1. the projection display of a projection of color images on screen, this projection display comprises:
Lighting unit, it launches a plurality of linear light beams that are parallel to each other;
Scrolling unit, its scrolling is by described a plurality of linear light beams of described lighting unit emission;
Line type light modulator, it modulates described a plurality of linear light beams from described scrolling unit according to picture signal; And
Scanning element, it scans described a plurality of linear light beams of being modulated by described line type light modulator on perpendicular to the direction of scrolling direction.
2. the projection display according to claim 1, wherein, described lighting unit comprises:
A plurality of LASER Light Source, wherein, each LASER Light Source is launched a branch of light; And
Beam shaping element, it is a plurality of linear light beams with preset width with described Beam Transformation.
3. the projection display according to claim 1 wherein, also comprises:
Projecting lens unit, a plurality of linear light beams after it will be modulated project on the screen,
Wherein scanning element is arranged between projecting lens unit and the screen.
4. the projection display according to claim 3, wherein, described scanning element is arranged on the focus of projecting lens.
5. the projection display according to claim 1, wherein, described scrolling unit comprises the square glass prism of a rotation.
6. the projection display of a projection of color images on screen, this projection display comprises:
Lighting unit, it launches a plurality of linear light beams that are parallel to each other on first direction;
Line type light modulator, it modulates described a plurality of linear light beam according to picture signal;
The light path converting unit, it will be transmitted into from described a plurality of linear light beams of described lighting unit on a plurality of zones of described line type light modulator; And
Scanning element, it scans described a plurality of linear light beams of being modulated by described line type light modulator on perpendicular to the second direction of described first direction.
7. the projection display according to claim 6, wherein, described light path converting unit comprises:
First diffraction instrument of a plurality of electric control diffraction direction, it is corresponding to described a plurality of linear light beams;
Second diffraction instrument of a plurality of electric control diffraction direction, its a plurality of linear light beams by a plurality of described first diffraction instrument diffraction are converted on first direction and are parallel to each other.
8. the projection display according to claim 6, wherein, described lighting unit comprises:
A plurality of LASER Light Source, each described LASER Light Source is launched a branch of light; And
Beam shaping element, it is a plurality of linear light beams with preset width with described a plurality of Beam Transformation.
9. the projection display according to claim 8 wherein, also comprises:
Projecting lens unit, a plurality of linear light beams after it will be modulated project on the screen,
Wherein, described scanning element is arranged between projecting lens unit and the screen.
10. the projection display according to claim 9, wherein, described scanning element is arranged on the focus of projecting lens.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80216506P | 2006-05-22 | 2006-05-22 | |
| US60/802,165 | 2006-05-22 | ||
| KR63488/06 | 2006-07-06 | ||
| KR1020060063488A KR101277257B1 (en) | 2006-05-22 | 2006-07-06 | Projection display adopting line type light modulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101082762A CN101082762A (en) | 2007-12-05 |
| CN101082762B true CN101082762B (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101379119A Expired - Fee Related CN101082762B (en) | 2006-05-22 | 2007-05-22 | Projection display adopting line type light modulator |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101277257B1 (en) |
| CN (1) | CN101082762B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540672A (en) * | 2012-02-15 | 2012-07-04 | 凝辉(天津)科技有限责任公司 | Miniature single-catoptron and single-light-source array type laser scanning projection device |
| CN108289179A (en) * | 2018-02-08 | 2018-07-17 | 深圳泰华安全技术工程有限公司 | A method of improving video signal collection anti-interference ability |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0884914A1 (en) * | 1993-02-03 | 1998-12-16 | Nitor | Methods and apparatus for image projection |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6373603B1 (en) * | 1999-06-14 | 2002-04-16 | Digilens. Inc. | Image generating system including compensation for chromatic dispersion |
| KR100571909B1 (en) * | 2000-09-21 | 2006-04-17 | 삼성전자주식회사 | Projection type image display apparatus |
| JP2004264776A (en) * | 2003-03-04 | 2004-09-24 | Seiko Epson Corp | Projector and optical device |
| JP2007530987A (en) * | 2003-07-17 | 2007-11-01 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Optical imaging system with foil-based laser / LED modulator array |
-
2006
- 2006-07-06 KR KR1020060063488A patent/KR101277257B1/en active IP Right Grant
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2007
- 2007-05-22 CN CN2007101379119A patent/CN101082762B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0884914A1 (en) * | 1993-02-03 | 1998-12-16 | Nitor | Methods and apparatus for image projection |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070112691A (en) | 2007-11-27 |
| CN101082762A (en) | 2007-12-05 |
| KR101277257B1 (en) | 2013-06-26 |
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