CN103529626B - DLP projector and look wheel apparatus thereof - Google Patents
DLP projector and look wheel apparatus thereof Download PDFInfo
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- CN103529626B CN103529626B CN201310486280.7A CN201310486280A CN103529626B CN 103529626 B CN103529626 B CN 103529626B CN 201310486280 A CN201310486280 A CN 201310486280A CN 103529626 B CN103529626 B CN 103529626B
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- look
- wheel
- rotating shaft
- brush
- tachogenerator
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Abstract
The open a kind of DLP projector of the present invention and look wheel apparatus thereof, this look wheel apparatus comprises: look is taken turns, comprise look wheel rotating disk and take turns the vertical rotating shaft being fixedly connected with in middle part of rotating disk with look, look wheel rotating disk comprises the spectral filter of multiple different colours, rotating shaft is rotated with painted rotating disk of taking turns, and multiple spectral filter is arranged around rotating shaft; The look wheel platelet of setting corresponding to rotating shaft; The tachogenerator being located on look wheel platelet, the periphery of tachogenerator and rotating shaft is oppositely arranged, for feeling the rotating speed surveying rotating shaft; The color wheel brush being fixed on the periphery of rotating shaft, color wheel brush rotates together along with rotating shaft, when color wheel brush turns to the position relative with tachogenerator, the sensitive surface of color wheel brush cleaning tachogenerator. Above-mentioned look wheel apparatus can solve the problem that tachogenerator is adhered to by dust and cause projector to be shut down, and also can not affect the proper heat reduction of look wheel self.
Description
[technical field]
The present invention relates to a kind of projector, particularly relate to a kind of DLP projector and look wheel apparatus thereof.
[background technology]
Look wheel (ColorWheel) is the important component part of DLP (DataLeakagePrevention) projector, and it is responsible for separation and the process of color. In general the life-span of look wheel is very long, has 20000H, is far longer than the life-span of projector. But, dust is but the critical defect of DLP projector, if dust gets lodged in above look wheel sensor, then look wheel sensor can not operate by induced color wheel, and projector will be made to shut down.
It is be responsible for reflecting on the projection surface red, green, blue light by micro-mirror of DMD (DigitalMicromirrorDevice, digital micromirror elements) chip that DLP projector produces the principle of color. Due to dmd chip micro-mirror rock and the speed of rotation of look wheel very fast, cause illusion to the visual organ of people, these three kinds of colored lights flashed fast are mixed by the naked eyes mistake of people, so seeing mixed color on the image of projection.
Such as, at monolithic DMD (DigitalMicromirrorDevice, digital micromirror elements) in optical projection system, input signal is converted into red, green, blue (RGB) data, data write the storage unit (SRAM) of dmd chip in order, white light source is burnt on look wheel by focusing on lens gathering, and then the light taken turns by look be imaged on the surface of dmd chip. When look wheel rotates, red, green, blue is sequentially penetrated on dmd chip. Look wheel and video image are that order carries out, so when ruddiness is mapped on dmd chip, the position that eyeglass should show according to red information and intensity tilt to "ON", and green is also work like this with blue light and vision signal. Human vision system is concentrated red, green, blue information and is seen a full-color image. By projecting lens, the image formed on dmd chip surface can be projected on a giant-screen.
Dust-proof requirement is not so strict by current DLP projector, so DLP projector does not have dust prevention too much. But in the application of reality, outdoor and public arena (as classroom) etc. a lot of local, dust or a lot. Long-time use, can allow and pile up a lot of dusts inside projector, certainly also can be attached to above look wheel sensor.
In order to prevent dust from getting lodged on look wheel sensor, some DLP projector add dust-proof net entering air port, but dust-proof net can affect the heat radiation of whole projector, and it is easy to blocked along with the dust-proof net of accumulation of time, finally along with the accumulation look wheel sensor of time still has dust attachment. Or, some DLP projector cover look wheel get up completely, but because look wheel to be had light to pass through, can not seal in light path, cause taking turns by shade look completely, cause dust to enter from light hole, still can block look wheel sensor, and the heat radiation of look wheel itself after covering, can be affected.
[summary of the invention]
In view of above-mentioned condition, it is necessary to provide the look wheel apparatus of a kind of DLP projector not affecting heat dispersion and can be effectively dust-proof.
A look wheel apparatus for DLP projector, comprising:
Look is taken turns, comprise look wheel rotating disk and take turns the vertical rotating shaft being fixedly connected with in middle part of rotating disk with described look, described look wheel rotating disk comprises the spectral filter of multiple different colours, and described rotating shaft is rotated together along with described look takes turns rotating disk, and described multiple spectral filter is arranged around described rotating shaft;
The look wheel platelet of setting corresponding to described rotating shaft;
The tachogenerator being located on described look wheel platelet, the periphery of described tachogenerator and described rotating shaft is oppositely arranged, for feeling the rotating speed surveying described rotating shaft; And
The color wheel brush being fixed on the periphery of described rotating shaft, described color wheel brush rotates together along with described rotating shaft, when described color wheel brush turns to the position relative with described tachogenerator, described color wheel brush cleans the sensitive surface of described tachogenerator.
Above-mentioned look wheel apparatus installs a look wheel brush on look wheel, with the painted rotation taken turns, look wheel brush can always at brush tachogenerator, make it can not be adhered to by dust, thus thoroughly solve the problem that tachogenerator is adhered to by dust and cause projector to be shut down, and also can not affect the proper heat reduction of look wheel self.
Wherein in an embodiment, the pouring weight such as also comprise, the weight of described pouring weight such as grade is equal with the weight of described color wheel brush, and described pouring weight such as grade is located on the periphery of described rotating shaft, and the described axle center waiting pouring weight and described color wheel brush to take turns relative to described look is symmetrical arranged.
Wherein in an embodiment, described waiting pouring weight to be described 2nd look wheel brush, the structure of described 2nd look wheel brush is completely identical with the structure of described color wheel brush;
Or the pouring weight such as described is the lumphy structure that outer surface has inductive material.
Wherein in an embodiment, described color wheel brush is arrange the banister brush formed by many furs;
Or, described color wheel brush is the flat brush being tiled formed by soft cloth or sponge.
Wherein in an embodiment, platelet is vertical with described rotating shaft arranges for described look wheel, and the middle part that described look takes turns platelet is located at by described tachogenerator.
Wherein in an embodiment, described look wheel platelet is PCB, and described PCB is for controlling described tachogenerator.
Wherein in an embodiment, also comprising the motor for driving described look wheel to rotate, described rotating shaft is the rotor of described motor, and the rotor of described motor is cylinder shape, is sheathed on the stator of described motor.
Wherein in an embodiment, also comprise the arranging wire module that the stator with described motor is electrically connected, described arranging wire module for being electrically connected with the principal controller of described DLP projector so that described principal controller controls described electric machine rotation by described arranging wire module.
Wherein in an embodiment, described look wheel is three segment color wheels, four segment color wheels, six-segment color wheel or gain-type look wheel.
Meanwhile, the present invention also provides a kind of DLP projector adopting above-mentioned look wheel apparatus.
A kind of DLP projector, comprising:
Above-mentioned look wheel apparatus;
It is positioned at the projection light source in the light path front of described look wheel apparatus;
Positive lens between described projection light source and described look wheel apparatus, the light that described positive lens is launched for assembling described projection light source;
The dmd chip being positioned at the light path rear of described look wheel apparatus, described dmd chip is used for optionally reflecting the light after described look wheel filters;
Finishing lens between described dmd chip and described look wheel apparatus, described finishing lens are used for being repaired by the light after described look wheel filters, to form the light beam of preset shape; And
The projection lens being positioned at the same side of described dmd chip with described finishing lens, described projection lens for receive described dmd chip reflect after light;
Wherein, the light that described projection light source is launched, is radiated at after described positive lens on described look wheel rotating disk, takes turns rotating disk by described look and filtered by light; Light after filtration is radiated on described dmd chip after described finishing lens, and described dmd chip is according to presetting the light after filtering described in projection pattern selective reflection, and forms described default projection pattern through the projection of described projection lens.
[accompanying drawing explanation]
Fig. 1 is the light path principle figure of the DLP projector of embodiment of the present invention;
Fig. 2 is the structural representation of the look wheel apparatus of the DLP projector shown in Fig. 1.
[embodiment]
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully. Accompanying drawing gives the preferred embodiment of the present invention. But, the present invention can realize in many different forms, is not limited to embodiment described herein. On the contrary, it is provided that the object of these embodiments makes the understanding of the disclosure to the present invention more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, it can directly on another element or can also there is element placed in the middle. When an element is considered as " connection " another element, it can be directly connected to another element or may there is element placed in the middle simultaneously. Term as used herein " vertical ", " level ", "left", "right" and similar statement are just for illustrative purposes.
Unless otherwise defined, all technology used herein are identical with the implication that the those skilled in the art belonging to the present invention understand usually with scientific terminology. The term used in the description of the invention herein is the object in order to describe specific embodiment, is not intended to be restriction the present invention. Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Refer to Fig. 1 and Fig. 2, the DLP projector 10 of one embodiment of the present invention, comprise look wheel apparatus 100, projection light source 200, positive lens 300, dmd chip 400, finishing lens 500 and projection lens 600. Look wheel apparatus 100 comprises look wheel 110, look wheel platelet 120, tachogenerator 130 and color wheel brush 140.
Look wheel 110 comprises look wheel rotating disk 111 and takes turns the vertical rotating shaft 113 being fixedly connected with in middle part of rotating disk 111 with look. Look wheel rotating disk 111 comprises the spectral filter of multiple different colours. Rotating shaft 113 is rotated with painted rotating disk 111 of taking turns, and multiple spectral filter is arranged around rotating shaft 113. Look wheel 110 can be three segment color wheels, four segment color wheels, six-segment color wheel or gain-type look wheel.
Concrete multiple spectral filter is respectively Red lightscreening plate, green spectral filter and blue color filter in the illustrated embodiment, and is fan annular, and look wheel rotating disk 111 is the disk being spliced to form by Red lightscreening plate, green spectral filter, blue color filter.
In other embodiments, multiple spectral filter is respectively Red lightscreening plate, green spectral filter, blue color filter, and all flaabellum shapes, look wheel rotating disk 111 is the turbine-like being made up of Red lightscreening plate, green spectral filter, blue color filter, so that look wheel 110 can be dried when rotating as fan, projection light source 200 is cooled simultaneously.
Further, the rotating shaft 113 of look wheel 110 can be common rotating shaft, it is possible to think the rotor of motor. Such as, in the illustrated embodiment in which, look is taken turns 110 devices 100 and is also comprised the motor for driving look wheel 110 rotation, and rotating shaft 113 is the rotor of motor, and the rotor of motor is cylinder shape, is sheathed on the stator 115 of motor.
Further, also comprising the arranging wire module 150 that the stator 115 with motor is electrically connected, arranging wire module 150 is electrically connected for the principal controller (not shown) with DLP projector 10, so that principal controller controls electric machine rotation by arranging wire module 150.
Further, the periphery of rotating shaft 113 applies one layer of inductive material, to form one layer of periphery induction layer of one week around rotating shaft 113, it is convenient to tachogenerator 130 and feels survey. Owing to rotating shaft 113 is provided with induction layer, to improve the induction precision of tachogenerator 130.
Look wheel platelet 120 setting corresponding to rotating shaft 113. Specifically in the illustrated embodiment in which, look wheel platelet 120 is PCB, and PCB is for controlling tachogenerator 130. Taking turns platelet 120 due to look is PCB, and it plays the effect of control rotational speed governor simultaneously, and supports the effect of fixed rotating speed sensor 130, to reduce the space that look is taken turns 110 devices 100 and taken, is convenient to projector's miniaturization.
It should be noted that, in the present invention, look wheel platelet 120 can also be common tabular structure.
Tachogenerator 130 is located on look wheel platelet 120, and tachogenerator 130 is oppositely arranged with the periphery of rotating shaft 113, for feeling the rotating speed surveying rotating shaft 113. Concrete in the illustrated embodiment in which, platelet 120 is vertical with rotating shaft 113 arranges for look wheel, and the middle part that look takes turns platelet 120 is located at by tachogenerator 130.
Color wheel brush 140 is fixed on the periphery of rotating shaft 113, and color wheel brush 140 rotates together along with rotating shaft 113, and when color wheel brush 140 turns to the position relative with tachogenerator 130, color wheel brush 140 cleans the sensitive surface of tachogenerator 130. Specifically in the illustrated embodiment in which, color wheel brush 140 is arrange the banister brush formed by many furs. Due to the banister brush formed for arranging by many furs, the resistance that it contacts with the sensitive surface of tachogenerator 130 reduces, to avoid the rotation too much affecting look wheel 110.
In other embodiments, color wheel brush 140 is the flat brush being tiled formed by soft cloth or sponge. Due to the flat brush being tiled is formed by soft cloth or sponge, it is relatively big with the sensitive surface contact surface of tachogenerator 130, the dust of the sensitive surface of cleaning tachogenerator 130 comparatively totally, thorough.
Further, look wheel apparatus 100 such as also comprises at the pouring weight 160, equal with the weight of color wheel brush 140 Deng the weight of pouring weight 160, wait pouring weight 160 to be located on the periphery of rotating shaft 113, and the axle center waiting pouring weight 160 and color wheel brush 140 to take turns 110 relative to look is symmetrical arranged. The weight being used for balancing look wheel brush 140 Deng pouring weight 160, ensures the steady rotation at a high speed of look wheel 110, avoids look wheel 110 brush to destroy look and takes turns the weight balancing of 110 and swing.
Concrete in the illustrated embodiment in which, wait pouring weight 160 to have the lumphy structure of inductive material for outer surface. Coat inductive material Deng pouring weight 160, make the rotating speed of tachogenerator 130 energy induced color wheel 110.
In other embodiments, waiting pouring weight 160 to be the 2nd look wheel brush, the structure of the 2nd look wheel brush is completely identical with the structure of color wheel brush 140. When being the 2nd look wheel brush when waiting pouring weight 160, look wheel 110 often rotates one week, then can clean the sensitive surface twice of tachogenerator 130, thus cleaning is comparatively clean.
Certainly, the 2nd look wheel brush can also be different from the structure of color wheel brush 140, only need its weight equal. When the 2nd look wheel brush is different from the structure of color wheel brush 140, no effect can be played, such as, if one of them look wheel brush 140 is banister brush, another one is sponge brush, then banister brush plays the effect of cleaning dust, and sponge brush plays the fog etc. of the sensitive surface knowing tachogenerator 130.
Projection light source 200 is positioned at the light path front of look wheel apparatus 100. Positive lens 300 is between projection light source 200 and look wheel apparatus 100, and positive lens 300 is for assembling the light of projection light source 200 transmitting. Dmd chip 400 is positioned at the light path rear of look wheel apparatus 100, and dmd chip 400 takes turns the light after 110 filtrations for optionally reflecting through look. Finishing lens 500, between dmd chip 400 and look wheel apparatus 100, repair lens 500 for repairing taking turns the light after 110 filtrations through look, to form the light beam of preset shape. Projection lens 600 is positioned at the same side of dmd chip 400 with finishing lens 500, and projection lens 600 is for the light after receiving dmd chip 400 and reflecting.
Wherein, the light that projection light source 200 is launched, is radiated at after positive lens 300 on look wheel rotating disk 111, takes turns rotating disk 111 by look and filtered by light; Light after filtration is radiated on dmd chip 400 after finishing lens 500, and dmd chip 400 is according to the light after default projection pattern selective reflection filter, and projects through projection lens 600 and form default projection pattern.
Above-mentioned look wheel apparatus 100 is taken turns at look and is installed a look wheel brush 140 on 110, with painted take turns 110 rotation, look wheel brush 114 can always at brush tachogenerator 130, make it can not be adhered to by dust, thus thoroughly solve the problem that tachogenerator 130 is adhered to by dust and cause projector to be shut down, and also can not affect the proper heat reduction of look wheel 110 self.
The above embodiment only have expressed several enforcement modes of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to patent scope of the present invention. , it is also possible to make some distortion and improvement, it should be appreciated that for the person of ordinary skill of the art, without departing from the inventive concept of the premise these all belong to protection scope of the present invention. Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the look wheel apparatus of a DLP projector, it is characterised in that, comprising:
Look is taken turns, comprise look wheel rotating disk and take turns the vertical rotating shaft being fixedly connected with in middle part of rotating disk with described look, described look wheel rotating disk comprises the spectral filter of multiple different colours, and described rotating shaft is rotated together along with described look takes turns rotating disk, and described multiple spectral filter is arranged around described rotating shaft;
The look wheel platelet of setting corresponding to described rotating shaft;
The tachogenerator being located on described look wheel platelet, the periphery of described tachogenerator and described rotating shaft is oppositely arranged, for feeling the rotating speed surveying described rotating shaft; And
The color wheel brush being fixed on the periphery of described rotating shaft, described color wheel brush rotates together along with described rotating shaft, when described color wheel brush turns to the position relative with described tachogenerator, described color wheel brush cleans the sensitive surface of described tachogenerator.
2. the look wheel apparatus of DLP projector as claimed in claim 1, it is characterized in that, the pouring weight such as also comprise, the weight of described pouring weight such as grade is equal with the weight of described color wheel brush, described pouring weight such as grade is located on the periphery of described rotating shaft, and the described axle center waiting pouring weight and described color wheel brush to take turns relative to described look is symmetrical arranged.
3. the look wheel apparatus of DLP projector as claimed in claim 2, it is characterised in that, described wait pouring weight to be the 2nd look wheel brush, the structure of described 2nd look wheel brush is completely identical with the structure of described color wheel brush;
Or the pouring weight such as described is the lumphy structure that outer surface has inductive material.
4. the look wheel apparatus of DLP projector as claimed in claim 1, it is characterised in that, described color wheel brush is arrange the banister brush formed by many furs;
Or, described color wheel brush is the flat brush being tiled formed by soft cloth or sponge.
5. the look wheel apparatus of DLP projector as claimed in claim 1, it is characterised in that, platelet is vertical with described rotating shaft arranges for described look wheel, and the middle part that described look takes turns platelet is located at by described tachogenerator.
6. the look wheel apparatus of DLP projector as claimed in claim 5, it is characterised in that, described look wheel platelet is PCB, and described PCB is for controlling described tachogenerator.
7. the look wheel apparatus of DLP projector as claimed in claim 1, it is characterised in that, also comprise the motor for driving described look wheel to rotate, described rotating shaft is the rotor of described motor, and the rotor of described motor is cylinder shape, is sheathed on the stator of described motor.
8. the look wheel apparatus of DLP projector as claimed in claim 7, it is characterized in that, also comprise the arranging wire module that the stator with described motor is electrically connected, described arranging wire module for being electrically connected with the principal controller of described DLP projector so that described principal controller controls described electric machine rotation by described arranging wire module.
9. the look wheel apparatus of DLP projector as claimed in claim 1, it is characterised in that, described look wheel is three segment color wheels, four segment color wheels, six-segment color wheel or gain-type look wheel.
10. a DLP projector, it is characterised in that, comprising:
Look wheel apparatus as described in item as arbitrary in claim 1��9;
It is positioned at the projection light source in the light path front of described look wheel apparatus;
Positive lens between described projection light source and described look wheel apparatus, the light that described positive lens is launched for assembling described projection light source;
The dmd chip being positioned at the light path rear of described look wheel apparatus, described dmd chip is used for optionally reflecting the light after described look wheel filters;
Finishing lens between described dmd chip and described look wheel apparatus, described finishing lens are used for being repaired by the light after described look wheel filters, to form the light beam of preset shape; And
The projection lens being positioned at the same side of described dmd chip with described finishing lens, described projection lens for receive described dmd chip reflect after light;
Wherein, the light that described projection light source is launched, is radiated at after described positive lens on described look wheel rotating disk, takes turns rotating disk by described look and filtered by light; Light after filtration is radiated on described dmd chip after described finishing lens, and described dmd chip is according to presetting the light after filtering described in projection pattern selective reflection, and forms described default projection pattern through the projection of described projection lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310486280.7A CN103529626B (en) | 2013-10-16 | 2013-10-16 | DLP projector and look wheel apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310486280.7A CN103529626B (en) | 2013-10-16 | 2013-10-16 | DLP projector and look wheel apparatus thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103529626A CN103529626A (en) | 2014-01-22 |
| CN103529626B true CN103529626B (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310486280.7A Expired - Fee Related CN103529626B (en) | 2013-10-16 | 2013-10-16 | DLP projector and look wheel apparatus thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656351B (en) * | 2015-02-12 | 2016-08-24 | 苏州佳世达光电有限公司 | Scialyscope and the method removing colour wheel module dust |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004333934A (en) * | 2003-05-08 | 2004-11-25 | Sharp Corp | Image projector |
| JP2006139062A (en) * | 2004-11-12 | 2006-06-01 | Sharp Corp | Color wheel cleaning unit and dlp projector equipped with it |
| JP2008225407A (en) * | 2007-03-16 | 2008-09-25 | Seiko Epson Corp | Projector |
| CN101387724A (en) * | 2007-09-14 | 2009-03-18 | 鸿富锦精密工业（深圳）有限公司 | Color wheel |
-
2013
- 2013-10-16 CN CN201310486280.7A patent/CN103529626B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004333934A (en) * | 2003-05-08 | 2004-11-25 | Sharp Corp | Image projector |
| JP2006139062A (en) * | 2004-11-12 | 2006-06-01 | Sharp Corp | Color wheel cleaning unit and dlp projector equipped with it |
| JP2008225407A (en) * | 2007-03-16 | 2008-09-25 | Seiko Epson Corp | Projector |
| CN101387724A (en) * | 2007-09-14 | 2009-03-18 | 鸿富锦精密工业（深圳）有限公司 | Color wheel |
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| CN103529626A (en) | 2014-01-22 |
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