CN1888974A - Projector and colour filtering device thereof - Google Patents
Projector and colour filtering device thereof Download PDFInfo
- Publication number
- CN1888974A CN1888974A CN 200510081004 CN200510081004A CN1888974A CN 1888974 A CN1888974 A CN 1888974A CN 200510081004 CN200510081004 CN 200510081004 CN 200510081004 A CN200510081004 A CN 200510081004A CN 1888974 A CN1888974 A CN 1888974A
- Authority
- CN
- China
- Prior art keywords
- filter
- light
- filter area
- area
- projector
- 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.)
- Pending
Links
Images
Abstract
A projecting camera and the colored filter equipment. The colored filter equipment uses for dichroic light, includes the first filter and the second filter. The first filter includes the yellow filter area, the cyan filter area and the green filter area. The second filter includes the carmine filter area. The second filter can move relative to the first filter, in order that the carmine filter area overlaps on the yellow filter area selectively and overlaps on the cyan filter area selectively. Shows red by the light of the overlapping carmine filter area and the overlapping yellow filter area, shows blue by the light of the overlapping carmine filter area and the overlapping cyan filter area. The invention can make the light pass the two filters, the two filters can form overlapping filter area selectively by the colored filter equipment, uses the overlapping arrange of the filter area with different color sect that can improve the color and the brightness of the projecting camera.
Description
Technical field
The present invention relates to a kind of color filtering device, relate in particular to a kind of color filtering device that is used for digital projector.
Background technology
Digital light is handled (Digital Light Processing; DLP) projector has become the mainstream technology of present projector, and it is in lightness, durability, or high brightness, high contrast aspect all are best in the Projection Display product.The DLP projector is with colour wheel (Color Wheel; CW) be arranged on the source path, the light that light source sends carries out after the light-splitting processing through the colour wheel of high speed rotating, produces colored light and projects digital micromirror elements (Digital Micromirror Device; DMD) on.
Please refer to Fig. 1 and Fig. 2.Fig. 1 and 2 is respectively traditional RGB three colour wheels and the synoptic diagram of RGBW four colour wheels.Early stage RGB three colour wheels 10 are made up of red R, green G, three look sections of blue B.In arbitrary given time, red R, green G, blue B three coloured light lines have only time of 1/3rd can pass through colour wheel respectively, therefore have 2/3rds light to be blocked, and have influenced whole luminous flux, cause brightness not good.The design of introducing white segment W in the colour wheel in order to improve the brightness of projected picture, to develop gradually, form RGBW four colour wheels 20, as shown in Figure 2.Although RGBW four colour wheels 20 improve to some extent in brightness, because there is difference in the inherent characteristic of the spectral wavelength of different colours light, thereby produce the difference of color rendition, reduced colour vividness, the problem of picture color distortion is more outstanding.
Summary of the invention
Given this, the technical problem to be solved in the present invention is, a kind of color filtering device of projector is provided, and makes projector have enough display brightness, the true reduction that can fully possess color again simultaneously.Not only can improve the brightness of projected picture, and can improve colour vividness.
According to an aspect of the present invention, provide a kind of color filtering device, in order to light is carried out color separation.This device comprises: first light filter and second light filter.First light filter comprises Yellow filter district, cyan (Cyan) filter area and green filter area.Second light filter comprises carmetta (Magenta) filter area.Second light filter is movable with respect to first light filter, causes the carmetta filter area selectively to overlap on the Yellow filter district and selectively overlaps on the cyan filter area.Present redness by the carmetta filter area of overlapping and the light in Yellow filter district, present blueness by the carmetta filter area of overlapping and the light of cyan filter area.
According to a further aspect of the invention, provide a kind of color filtering device, in order to color separation light.This device comprises: first light filter and second light filter.First light filter comprises Yellow filter district, cyan (Cyan) filter area and green filter area.Second light filter comprises carmetta (Magenta) filter area.Second light filter can be opened or be closed with respect to first light filter.When second light filter is opened with respect to first light filter, can make light present green, or make the light that continues by Yellow filter district, cyan filter area, green filter area present white by green filter area.When second light filter is closed with respect to first light filter, can make the carmetta filter area overlap on the Yellow filter district, make by the carmetta filter area of overlapping and the light in Yellow filter district and present redness, maybe can make the carmetta filter area overlap on the cyan filter area, make by the carmetta filter area of overlapping and the light of cyan filter area to present blueness.
According to a further aspect of the present invention, provide a kind of projector, comprising: light source, color filtering device, optical module, image-forming component, and camera lens.Light source is in order to produce light.Color filtering device is in order to color separation light, and it comprises: colour wheel and optical filter.Optical filter can be opened or be closed with respect to colour wheel, and movably is disposed between colour wheel and the optical module.Light by the color filtering device color separation is assembled by optical module.Image-forming component produces image according to the light that optical module is assembled again.At last, by camera lens image is focused on the screen.
For above-mentioned purpose of the present invention, feature and advantage are become apparent, a preferred implementation cited below particularly also is elaborated in conjunction with the accompanying drawings.
Description of drawings
Fig. 1 is the synoptic diagram of traditional RGB three colour wheels;
Fig. 2 is the synoptic diagram of traditional RGBW four colour wheels;
Fig. 3 is the digital optical processing projector of the present invention's one preferred implementation and the synoptic diagram of opticpath thereof;
Fig. 4 is the synoptic diagram of color filtering device shown in Figure 3;
Fig. 5 A and 5B are the optical filter shown in Figure 4 and the action diagram of travel mechanism thereof;
Fig. 6 is the synoptic diagram of the another kind of color filtering device of the present invention.
Description of reference numerals
10 3 colour wheels
20 4 colour wheels
300 digital optical processing projectors
310 light sources
312 elliptical reflecting covers
314 bulbs
320 color filtering devices
322 colour wheels
324 optical filters
330 optical modules
332 light pipes
334 folding mirrors
340 image-forming components
350 camera lenses
510 bodies
520 slide rails
530 runners
532 salient points
610 first light filters
620 second light filters
Embodiment
Color filtering device of the present invention is preferably applied to digital optical processing projector (Digital LightProcessing; DLP) in.This color filtering device comprises first light filter and second light filter, and second light filter is movable with respect to first light filter.By means of the relative motion of two light filters, the filter area of first light filter and the filter area of second light filter are overlapped.
Please refer to Fig. 3, this figure is the digital optical processing projector of the present invention's one preferred implementation and the synoptic diagram of opticpath thereof.Digital optical processing projector 300 comprises: light source 310, color filtering device 320, optical module 330, image-forming component 340, and camera lens 350.Light source 310 is in order to produce light.As shown in Figure 3, light source 310 comprises elliptical reflecting cover 312 and bulb 314, and bulb 314 is configured in the first focus place of elliptical reflecting cover 312.Color filtering device 320 is in order to color separation light, and it comprises: colour wheel 322 and optical filter 324.Colour wheel 322 can rotate with respect to light, and optical filter 324 can move with respect to light.In Fig. 3, optical filter 324 movably is disposed between colour wheel 322 and the optical module 330, and can move back and forth along the direction of two arrow A, opens or closes with respect to colour wheel 322.Optical module 330 is in order to assemble by the light of color separation, and it can comprise: light pipe (Light Pipe) 332 and folding mirror 334 (Fold Mirror).The light that light pipe 332 receives by color filtering device, and make the equalizing light rays of being compiled, the light that folding mirror 334 is accepted by described light pipe, and the direction of change light.After light process elliptical reflecting cover 312 reflections that bulb 314 sends, focus on the second focus place of elliptical reflecting cover 312.Then, light passes color filtering device 320 to carry out color separation, again by optical module 330 collected light.In Fig. 3, light is by promptly entering light pipe 322 after colour wheel 322 and the optical filter 324, and the light by light pipe 322 changes radiation directions by folding mirror 334 again, makes ray cast to image-forming component 340.Image-forming component 340 produces image according to the light of optical module 330 gatherings again.At last, by camera lens 350 image is focused on the screen.Image-forming component 340 is preferably digital micromirror elements (Digital Micromirror Device; DMD).
Please refer to Fig. 4, this figure is the synoptic diagram of color filtering device shown in Figure 3.In Fig. 4, the colour wheel 322 of color filtering device is three node colour wheels, is preferably YGC three colour wheels; YGC three colour wheels comprise Yellow filter district Y, cyan (Cyan) filter area C and green filter area G.The optical filter 324 of color filtering device is the rectangle optical filter, is preferably the carmetta optical filter; Carmetta optical filter 410 comprises carmetta (Magenta) filter area M., make carmetta filter area M overlap on Yellow filter district Y selectively and overlap on cyan filter area C selectively with respect to colour wheel 322 opening and closing by optical filter 324.When optical filter 324 was opened with respect to colour wheel 322, light only carried out color separation by colour wheel 322, can make the light by green filter area G present green, or make the light that continues by Yellow filter district Y, cyan filter area C and green filter area G present white.When optical filter 324 was closed with respect to colour wheel 322, light continued by colour wheel 322 and optical filter 324.So, carmetta filter area M can overlap on Yellow filter district Y, makes by the carmetta filter area M of overlapping and the light of Yellow filter district Y to present redness; Perhaps, carmetta filter area M can overlap on cyan filter area C, makes by the carmetta filter area M of overlapping and the light of cyan filter area C to present blueness.
Please refer to Fig. 5 A and 5B, they show the action situation of optical filter shown in Figure 4 and travel mechanism thereof.Travel mechanism moves back and forth in order to drive optical filter 324, and it comprises body 510, slide rail 520 and runner 530.Optical filter 324 is arranged on the body 510, and slide rail 520 is fixedly connected on a side of body 510.That is, slide rail 520 is adjacent to a side of optical filter 324.Runner 530 has salient point 532, and salient point 532 is connected in slide rail 520 slidably.Shown in Fig. 5 A, runner 530 rotates in a clockwise direction.At this moment, salient point 532 slides along slide rail 520 towards the top, and 510 beginnings of drive body are moved towards the right side.After salient point 532 slides into the top of slide rail 520, change direction and when sliding towards the below, continue drive body 510 and move towards the right side along slide rail 520.After salient point 532 is got back to the middle part of slide rail 520, then drive body 510 and turn back and begin to move, shown in Fig. 5 B towards the left side.Runner 530 rotates a circle, and 532 of salient points slide up and down once in slide rail 520, drive optical filter about 324 whereby and move back and forth.
Please refer to Fig. 6, this figure is the synoptic diagram of another color filtering device of the present invention.In Fig. 6, first light filter 610 of color filtering device is three node colour wheels, is preferably YGC three colour wheels; YGC three colour wheels comprise Yellow filter district Y, cyan (Cyan) filter area C and green filter area G.Second light filter 620 of color filtering device is a circular filter, and it can rotate with respect to light.Second light filter 620 preferably includes carmetta filter area M and white filter area W.As shown in Figure 6, the sectorial area of carmetta filter area M is less than the sectorial area of white filter area W.In addition, first light filter 610 and second light filter 620 all can rotate with respect to light, and have first rotating speed and second rotating speed respectively.First rotating speed of first light filter 610 is preferably half of second rotating speed of second light filter 620.When light continues by first filter area 610 and second filter area 620, by to two light filters in relative rotation sequential control, can make carmetta filter area M overlap on Yellow filter district Y selectively, also can make it overlap on cyan filter area C selectively.Present redness by the carmetta filter area M of overlapping and the light of Yellow filter district Y; Present blueness by the carmetta filter area M of overlapping and the light of cyan filter area C; Present green by the green filter area G of overlapping and the light of white filter area W; Present white by the white filter area W that overlaps and the light that continues by Yellow filter district Y, cyan filter area C, green filter area G.
The disclosed digital optical processing projector of the above-mentioned embodiment of the present invention can make light simultaneously by two light filters, but and forms the filter area of overlapping selectively by means of the light filter of two relative motions in the color filtering device.Simultaneously, by means of the overlapping collocation of not homochromy section filter area, the colour vividness and the brightness that can improve projected picture.The present invention is not only applicable to the higher commercial exhibition environment of brightness demand, also is applicable to the projection that must truly present the home theater of picture color.
In sum; though the present invention is disclosed in by a preferred implementation; but this is not to be limitation of the present invention; the any technician in this area is under the prerequisite that does not exceed design of the present invention and scope; can make various conversion and retouching to the present invention, so protection scope of the present invention should be as the criterion with the protection domain that appending claims was defined.
Claims (10)
1. projector comprises:
In order to produce the light source of light;
In order to the color filtering device that described light is carried out color separation, the optical filter that this device comprises colour wheel, opens or close with respect to described colour wheel;
In order to assemble optical module by the light of described color separation;
In order to receive the image-forming component that also produces image by the light of described optical module in view of the above;
In order to described image is focused on the camera lens on the screen;
Wherein, described optical filter movably is configured between described colour wheel and the described optical module.
2. projector as claimed in claim 1, wherein, described colour wheel comprises Yellow filter district, cyan filter area and green filter area.
3. projector as claimed in claim 2, wherein, when described optical filter is opened with respect to described colour wheel, make light present green, or make the light that continues by described Yellow filter district, cyan filter area and green filter area present white by described green filter area.
4. projector as claimed in claim 2, wherein, described optical filter comprises the carmetta filter area, this carmetta filter area overlaps on described Yellow filter district selectively and overlaps on described cyan filter area selectively.
5. projector as claimed in claim 4, wherein, when described optical filter is closed with respect to described colour wheel, make described carmetta filter area overlap on described Yellow filter district, make by the described carmetta filter area of overlapping and the light in described Yellow filter district and present redness, or make described carmetta filter area overlap on described cyan filter area, make by the described carmetta filter area of overlapping and the light of cyan filter area to present blueness.
6. projector as claimed in claim 1, wherein, described color filtering device also comprises travel mechanism, moves back and forth in order to drive described optical filter, this travel mechanism comprises:
Be adjacent to the slide rail of described optical filter one side;
Runner, it has salient point, and this salient point is connected in described slide rail slidably, and when described runner rotated a circle, described salient point reciprocatingly slided in described slide rail once.
7. projector as claimed in claim 1, wherein, described optical module comprises:
In order to receive the light by described color filtering device and to make the light pipe of described equalizing light rays;
In order to accept the light by described light pipe and change described light direction, make the folding mirror of ray cast to described image-forming component.
8. projector as claimed in claim 1, wherein, described image-forming component is a digital micromirror elements.
9. device as claimed in claim 2, wherein, described second light filter is a circular filter, and it rotates with respect to described light, and this circular filter comprises described carmetta filter area and white filter area.
10. device as claimed in claim 9, wherein, the sectorial area of described carmetta filter area is less than the sectorial area of described white filter area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510081004 CN1888974A (en) | 2005-06-27 | 2005-06-27 | Projector and colour filtering device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510081004 CN1888974A (en) | 2005-06-27 | 2005-06-27 | Projector and colour filtering device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1888974A true CN1888974A (en) | 2007-01-03 |
Family
ID=37578254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510081004 Pending CN1888974A (en) | 2005-06-27 | 2005-06-27 | Projector and colour filtering device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1888974A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425757A (en) * | 2008-05-30 | 2012-04-25 | 绎立锐光科技开发(深圳)有限公司 | Light source capable of providing color change light and method thereof |
| WO2012075947A1 (en) * | 2010-12-08 | 2012-06-14 | 绎立锐光科技开发(深圳)有限公司 | Projection system, light source system, and light source assembly |
| CN102650409A (en) * | 2011-10-28 | 2012-08-29 | 深圳市光峰光电技术有限公司 | Wavelength conversion device, manufacture method and light source device |
| CN104010175A (en) * | 2014-05-21 | 2014-08-27 | 明基电通有限公司 | Projecting device with color wheel locking function and color wheel locking method |
| CN104252094A (en) * | 2012-09-28 | 2014-12-31 | 深圳市绎立锐光科技开发有限公司 | Light source system and related projection system |
| CN105135367A (en) * | 2015-09-18 | 2015-12-09 | 广州市浩洋电子有限公司 | Novel light filtering device, color wheel comprising novel light filtering device, and stage lamp system comprising novel light filtering device |
| WO2016197888A1 (en) * | 2015-06-08 | 2016-12-15 | 深圳市绎立锐光科技开发有限公司 | Projection system, light source system and light source assembly |
| US9631792B2 (en) | 2010-12-08 | 2017-04-25 | Appotronics China Corporation | Light source system employing wavelength conversion materials and color filters |
| CN107037680A (en) * | 2017-05-08 | 2017-08-11 | 苏州佳世达光电有限公司 | Optical projection system |
| CN108873583A (en) * | 2018-08-03 | 2018-11-23 | 苏州佳世达光电有限公司 | Color wheel of projecting camera and the projector for applying it |
| WO2019200991A1 (en) * | 2018-04-18 | 2019-10-24 | 广州市浩洋电子股份有限公司 | Stage projection lamp having dual-color wheel system |
-
2005
- 2005-06-27 CN CN 200510081004 patent/CN1888974A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425757A (en) * | 2008-05-30 | 2012-04-25 | 绎立锐光科技开发(深圳)有限公司 | Light source capable of providing color change light and method thereof |
| US9631792B2 (en) | 2010-12-08 | 2017-04-25 | Appotronics China Corporation | Light source system employing wavelength conversion materials and color filters |
| WO2012075947A1 (en) * | 2010-12-08 | 2012-06-14 | 绎立锐光科技开发(深圳)有限公司 | Projection system, light source system, and light source assembly |
| US10073334B2 (en) | 2010-12-08 | 2018-09-11 | Appotronics Corporation Limited | Projection system, light source system and light source assembly |
| US10042240B2 (en) | 2010-12-08 | 2018-08-07 | Appotronics Corporation Limited | Projection system, light source system and light source assembly |
| US9904158B2 (en) | 2010-12-08 | 2018-02-27 | Appotronics Corporation Limited | Projection system, light source system and light source assembly |
| CN102650409A (en) * | 2011-10-28 | 2012-08-29 | 深圳市光峰光电技术有限公司 | Wavelength conversion device, manufacture method and light source device |
| CN104252094A (en) * | 2012-09-28 | 2014-12-31 | 深圳市绎立锐光科技开发有限公司 | Light source system and related projection system |
| CN104252094B (en) * | 2012-09-28 | 2017-03-29 | 深圳市绎立锐光科技开发有限公司 | Colour wheel and optical projection system |
| CN104010175B (en) * | 2014-05-21 | 2016-01-20 | 明基电通有限公司 | The projection arrangement of tool colour wheel lock function and colour wheel locking means |
| CN104010175A (en) * | 2014-05-21 | 2014-08-27 | 明基电通有限公司 | Projecting device with color wheel locking function and color wheel locking method |
| WO2016197888A1 (en) * | 2015-06-08 | 2016-12-15 | 深圳市绎立锐光科技开发有限公司 | Projection system, light source system and light source assembly |
| JP2018525655A (en) * | 2015-06-08 | 2018-09-06 | 深▲ちぇん▼市繹立鋭光科技開発有限公司Ａｐｐｏｔｒｏｎｉｃｓ Ｃｈｉｎａ Ｃｏｒｐｏｒａｔｉｏｎ | Projection system, light source system, and light source unit |
| CN105135367A (en) * | 2015-09-18 | 2015-12-09 | 广州市浩洋电子有限公司 | Novel light filtering device, color wheel comprising novel light filtering device, and stage lamp system comprising novel light filtering device |
| CN107037680A (en) * | 2017-05-08 | 2017-08-11 | 苏州佳世达光电有限公司 | Optical projection system |
| CN107037680B (en) * | 2017-05-08 | 2019-09-20 | 苏州佳世达光电有限公司 | Optical projection system |
| WO2019200991A1 (en) * | 2018-04-18 | 2019-10-24 | 广州市浩洋电子股份有限公司 | Stage projection lamp having dual-color wheel system |
| CN108873583A (en) * | 2018-08-03 | 2018-11-23 | 苏州佳世达光电有限公司 | Color wheel of projecting camera and the projector for applying it |
| CN108873583B (en) * | 2018-08-03 | 2020-05-05 | 苏州佳世达光电有限公司 | Projector color wheel and projector using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1888974A (en) | Projector and colour filtering device thereof | |
| JP4487240B2 (en) | Projection display optical system | |
| US7394597B2 (en) | SLM projection display with series DMD illuminator | |
| EP1501290B1 (en) | Image projector | |
| US7862182B2 (en) | Optical system for a projector, and corresponding projector | |
| US20060274285A1 (en) | Projector and color filtering device thereof | |
| JP2007534004A (en) | Projection system for video projector using multiple DMD devices | |
| CN101393313B (en) | Color wheel | |
| KR100669575B1 (en) | Projector | |
| CN104062835B (en) | Projection display device | |
| TWM396401U (en) | Projector with zoom lens and projection-type display device | |
| JP2007086488A (en) | Video projection device | |
| US8474987B2 (en) | Projector having light amount control based on projection system F-number | |
| WO2019200991A1 (en) | Stage projection lamp having dual-color wheel system | |
| US20230388460A1 (en) | Digital display system and method | |
| EP1447992B1 (en) | Projecting optical system | |
| JP2001183603A (en) | Projection display device | |
| JP2003075768A (en) | Optical system for projector | |
| TW201337436A (en) | Color wheel module for use in a projector apparatus, projector apparatus, and method of switching display for a stereoscopic image or a flat image | |
| US20090290128A1 (en) | Tiled color filter for a projection system | |
| JP2003315733A (en) | Image display device | |
| CN105182661B (en) | Single DMD projection device with white light source | |
| JP2006145863A (en) | Projector | |
| CN1790097A (en) | Projection display optical system and projector having the same | |
| CN101078855A (en) | Pick-up camera |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |