CN101089723A - Color wheel and projection system using the color wheel - Google Patents
Color wheel and projection system using the color wheel Download PDFInfo
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- CN101089723A CN101089723A CN 200610092703 CN200610092703A CN101089723A CN 101089723 A CN101089723 A CN 101089723A CN 200610092703 CN200610092703 CN 200610092703 CN 200610092703 A CN200610092703 A CN 200610092703A CN 101089723 A CN101089723 A CN 101089723A
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- colour wheel
- projection system
- bearing assembly
- breach
- optical
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Abstract
A color wheel is prepared as fixing multiple filter by bearing component, setting said bearing component on pivot of motor for making said color wheel be able to be rotated, arranging said multiple filter on outer edge of said bearing component to from a circle with at least one botch being used to replace transparent filter applied on traditional color wheel.
Description
Technical field
The present invention is about a kind of colour wheel that is used for optical projection system, particularly about a kind of colour wheel that improves projection brightness, and the optical projection system of using this colour wheel.
Background technology
Traditional optical projection system, comprise projector and inner projection TV, when the DLP system that uses as Texas Instrument (TexasInstruments Inc.), need to use rotary color wheel (color wheel) to be divided into red, green, blue three looks with light with light source, coloured light is via digital micro-mirror assembly (Digital MicromirrorDevice, DMD) signal can be projected to screen after the reflection, present colored projection image.
Traditional colour wheel comprises the optical filter of red, green, blue three looks, and the colour wheel that adopts four colo(u)r filters is also arranged, and promptly increases transparent section and produces the colour wheel of white light to cooperate light source.
Please refer to Figure 1A, traditional colour wheel 10 is made of a bearing assembly 4 and transparent four colo(u)r filters of RGB (representing with R, G, B and W respectively), and wherein this bearing assembly 4 is for annular bearing assembly commonly used and with the fixing described optical filter of the mode of clamping.Figure 1B is the side view of this colour wheel 10.Other has the colour wheel (not shown) that is referred to as eight sections, and promptly transparent four colo(u)r filters of RGB respectively have two to be provided with in regular turn.Which kind of colour wheel no matter, the setting of white optical filter is the demand according to optical projection system, cooperates the controlling signal of DMD to reach the purpose that increases image brilliance, or with pulse signal genlocing in transparent section, to improve the scintillation of picture.
In traditional colour wheel, each colo(u)r filter is to be base material with glass, plates the anti-reflective film with different colours respectively, cuts into the outer rim that is fixed in bearing assembly 4 after desirable shape and the fan-shaped angle again.Each colo(u)r filter can make the light of light source penetrate to reach spectrophotometric result.Yet optical filter is after plating anti-reflective film, because light still has decay after by transparent optical filter, so penetrance can't reach 100%.
In view of this, the inventor at above-mentioned disappearance, proposes a kind of colour wheel of novelty based on not changing under the situation of other assembly of optical projection system, can further improve the brightness of existing optical projection system.
Summary of the invention
The object of the present invention is to provide a kind of colour wheel that improves projector's brightness.
For reaching above-mentioned purpose, comprise a bearing assembly and a plurality of optical filter according to colour wheel of the present invention.These a plurality of optical filters are fixed on the outer rim of this bearing assembly and form at least one breach.When colour wheel of the present invention rotated, this breach can make light pass through fully, so the transparent optical filter in the conventional art must be set.Avoid in traditional colour wheel, transparent optical filter causes the decline of light transmittance.Simultaneously, make counterweight inhomogeneous because of a plurality of optical filters form this breach in the bearing assembly outer rim, colour wheel is easy to generate vibration when rotating, so in this indentation, there at least one balance is set, the vibrations that produced when rotating with the colour wheel of preventing.
As mentioned above, according to colour wheel of the present invention, wherein this a plurality of optical filters also can form two breach, this two breach size unanimity and be symmetrical arranged with respect to this bearing assembly.A plurality of optical filters in this colour wheel also can form three breach, and this three breach size unanimity and adjacent two breach center line angles are 120 degree.Amount of unbalance when so symmetric offset spread can be eliminated the colour wheel rotation.
According to colour wheel of the present invention, can further comprise a set collar, this set collar is along the outer rim setting of these a plurality of optical filters and extend to a side of these a plurality of optical filters.So the aequum of this set collar when promoting the colour wheel rotation, also can cut noise by the wind when hanging down rotation.
General traditional optical projection system, utilization need not change the brightness that other assembly or change design can promote projection image according to colour wheel of the present invention.
Description of drawings
Figure 1A shows the front elevation of the colour wheel of conventional art;
Figure 1B shows the side view of the colour wheel of Figure 1A;
Fig. 2 shows the front elevation according to the colour wheel of the preferred embodiment of the present invention;
Fig. 3 shows the front elevation according to the colour wheel of another preferred embodiment of the present invention;
Fig. 4 shows the front elevation according to the colour wheel of the another preferred embodiment of the present invention;
Fig. 5 A shows the front elevation according to the colour wheel of one embodiment of the present invention;
The side view of colour wheel shown in Fig. 5 B displayed map 5A; And
Fig. 5 C is the partial enlarged drawing of Fig. 5 B.
The primary clustering symbol description
4 bearing assemblies, 40 colour wheels
The sub-R Red lightscreening plate of 6 balances
8 set collar G green color filters
10 colour wheel B blue color filters
The transparent optical filter of 20 colour wheel W
30 colour wheel X breach
The 30A colour wheel
Embodiment
Following with reference to relevant drawings, a kind of colour wheel according to the preferred embodiment of the present invention is described, wherein identical assembly is to represent with identical label.
Please refer to Fig. 2, Fig. 2 is a kind of colour wheel 20 that shows according to the preferred embodiment of the present invention, and this colour wheel 20 comprises a bearing assembly 4 and red, green, blue three-colour filter (R, G, B).Wherein this bearing assembly 4 is a traditional annular bearing assembly and with the fixing described optical filter of the mode of clamping.These bearing assembly central authorities can further combine with the pivot (not shown) of motor, make this motor can drive this colour wheel 20.This bearing assembly 4 presss from both sides respectively establishes red, green, blue three-colour filter (R, G, B).What be different from Fig. 1 is, the shown colour wheel 20 of Fig. 2 is provided with transparent optical filter part and forms a breach X former.Cause the loss of the light amount of penetrating in the time of so can avoiding the light break-through to cross transparent optical filter.In addition, because colour wheel 20 must be with high speed rotating in optical projection system, the existence of this breach X makes the barycenter of colour wheel can't the position online at turning axle, so can't balance rotating.For making spin balancing, set up at least one balance 6 at this breach X place around the bearing assembly 4, the weight of this balance 6 just can form couple with the weight of the optical filter that is symmetrical in this breach X, produces vibration and noise because of imbalance in the time of can avoiding colour wheel to rotate.This balance is made of plastics, rubber or metal, also can be fan-shaped tabular or annular strip.
Fig. 3 is a kind of colour wheel 30 that shows according to another preferred embodiment of the present invention, and this colour wheel 30 has two groups of three-colour filters (R, G, B), has cancelled the setting of transparent optical filter at present embodiment, promptly transparent optical filter part is set forms a breach X former.Because the number of breach X is two, so being set on bearing assembly 4, balance selects for any, as long as breach X size is consistent and be symmetrical arranged the formation couple, the balance in the time of can reaching the colour wheel rotation.
Fig. 4 shows a kind of colour wheel 40 according to the another preferred embodiment of the present invention.Please refer to Fig. 4, have a breach X between two adjacent optical filters, this breach X and replace original transparent optical filter function.In this embodiment, three breach X size center line angle consistent and two adjacent breach X is 120 degree, and so this colour wheel 40 can be reached balance when rotated.
Above embodiment is the function that replaces the transparent optical filter of colour wheel in the conventional art with breach X.The number of breach X and size also can be asymmetric with bearing assembly, as long as when this colour wheel rotates, can reach rotary balance and get final product.
Moreover, consider colour wheel because breach X required stability when rotated can further be provided with a set collar in the optical filter outer rim.As the colour wheel 30A as shown in Fig. 5 A, the optical filter setting of this colour wheel 30A is similar to colour wheel 30 shown in Figure 3, in the outer rim of optical filter one set collar 8 is set further.Fig. 5 B shows the side view of this colour wheel 30A.Fig. 5 C is the partial enlarged drawing of Fig. 5 B.By Fig. 5 C as can be known, this set collar 8 is along the outer rim setting of optical filter and extends to a side of this optical filter.In the present embodiment, the enforcement of this set collar 8 is not limited to the colour wheel 30 as Fig. 3, also can be arranged on as shown in Figure 2 colour wheel 20 or colour wheel as shown in Figure 4 40.This set collar 8 is made of plastics, rubber or metal.
The employed bearing assembly of colour wheel of the present invention is not limited to the illustrated annular bearing assembly of preferred embodiment; The fixed form of this bearing assembly and described optical filter also is not limited to the mode of clamping, also can be bonding, socket or the mode of selecting to take up an official post fix described optical filter.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be included in the scope of the present invention its equivalent modifications of carrying out or change.
Claims (20)
1. colour wheel that is used for optical projection system comprises:
One bearing assembly;
A plurality of optical filters are fixed in the periphery of this bearing assembly and form at least one breach.
2. colour wheel according to claim 1, wherein these a plurality of optical filters are respectively redness, green and blue color filter.
3. colour wheel according to claim 1 is characterized in that, these a plurality of optical filters are the peripheries that are fixed in this bearing assembly with clamping, bonding, socket or equivalent way.
4. colour wheel according to claim 1 is characterized in that, this bearing assembly also comprises at least one balance in this indentation, there.
5. colour wheel according to claim 4 is characterized in that, this balance is made of plastics, rubber or metal.
6. colour wheel according to claim 1 is characterized in that, described breach size is consistent.
7. colour wheel according to claim 1 is characterized in that, described breach with respect to this bearing assembly for being symmetrical arranged.
8. colour wheel according to claim 1 is characterized in that, described breach size unanimity and adjacent two breach center line angles are 120 degree.
9. colour wheel according to claim 1 is characterized in that, also comprises a set collar, and this set collar is along the outer rim setting of these a plurality of optical filters and extend to a side of these a plurality of optical filters.
10. colour wheel according to claim 9 is characterized in that, set collar is made of plastics, rubber or metal.
11. colour wheel according to claim 1 is characterized in that, described breach is formed at respectively between the two adjacent optical filters.
12. an optical projection system comprises:
One light source;
Wheels of the same colour; And
One digital micro-mirror assembly;
Wherein this colour wheel group comprises:
One motor;
One bearing assembly joins with the pivot of this motor;
A plurality of optical filters are fixed in the periphery of this bearing assembly and form at least one breach; And
Wherein the light that produces of this light source is through after the color separation of colour wheel, and the reflection by this digital micro-mirror assembly is to produce an image again.
13. optical projection system according to claim 12 is characterized in that, bearing assembly also comprises at least one balance in this indentation, there.
14. optical projection system according to claim 13 is characterized in that, this balance is made of plastics, rubber or metal.
15. optical projection system according to claim 12 is characterized in that, described breach size is consistent.
16. optical projection system according to claim 12 is characterized in that, this breach is symmetrical arranged with respect to this bearing assembly system.
17. optical projection system according to claim 12 is characterized in that, described breach size unanimity and adjacent two breach center line angles are 120 degree.
18. optical projection system according to claim 12 is characterized in that, further comprises a set collar, this set collar is along the periphery setting of these a plurality of optical filters and extends to a side of these a plurality of optical filters.
19. optical projection system according to claim 18 is characterized in that, this set collar is made of plastics, rubber or metal.
20. optical projection system according to claim 12 is characterized in that, described breach is formed at respectively between the two adjacent optical filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610092703 CN101089723A (en) | 2006-06-12 | 2006-06-12 | Color wheel and projection system using the color wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610092703 CN101089723A (en) | 2006-06-12 | 2006-06-12 | Color wheel and projection system using the color wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101089723A true CN101089723A (en) | 2007-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610092703 Pending CN101089723A (en) | 2006-06-12 | 2006-06-12 | Color wheel and projection system using the color wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101089723A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105892200A (en) * | 2015-01-26 | 2016-08-24 | 台湾彩光科技股份有限公司 | Optical color wheel component and optical color wheel thereof |
| CN106249373A (en) * | 2016-10-11 | 2016-12-21 | 中国人民解放军陆军军官学院 | A kind of three primary colours optical filter |
| CN106468427A (en) * | 2015-08-21 | 2017-03-01 | 台达电子工业股份有限公司 | Fluorescence colour wheel and its Wavelength converter of application |
| CN107407800A (en) * | 2015-07-01 | 2017-11-28 | 美题隆公司 | Unbalanced wheel hub design |
-
2006
- 2006-06-12 CN CN 200610092703 patent/CN101089723A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105892200A (en) * | 2015-01-26 | 2016-08-24 | 台湾彩光科技股份有限公司 | Optical color wheel component and optical color wheel thereof |
| CN107407800A (en) * | 2015-07-01 | 2017-11-28 | 美题隆公司 | Unbalanced wheel hub design |
| CN106468427A (en) * | 2015-08-21 | 2017-03-01 | 台达电子工业股份有限公司 | Fluorescence colour wheel and its Wavelength converter of application |
| CN106249373A (en) * | 2016-10-11 | 2016-12-21 | 中国人民解放军陆军军官学院 | A kind of three primary colours optical filter |
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