CN102375198B - Projection device and color wheel set thereof - Google Patents
Projection device and color wheel set thereof Download PDFInfo
- Publication number
- CN102375198B CN102375198B CN201010256210.9A CN201010256210A CN102375198B CN 102375198 B CN102375198 B CN 102375198B CN 201010256210 A CN201010256210 A CN 201010256210A CN 102375198 B CN102375198 B CN 102375198B
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- China
- Prior art keywords
- colour wheel
- counterbalance weight
- rotor body
- utmost point
- rotor
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Abstract
The invention relates to a projection device and a color wheel set thereof. The color wheel set comprises a stator, a rotor, a color wheel and a sensor, wherein the rotor surrounds the stator and comprises a rotor body, a rotation seat and a balance weight; the balance weight is arranged on the rotation seat and is provided with an N pole piece and an S pole piece; the rotor body has a barrel shape; the rotation seat is arranged at one end of the rotor body; the color wheel is arranged on the rotor; a magnetic pole intersection line position corresponds to a specific position of the color wheel; the sensor corresponds to the balance weight; and when the balance weight rotates, the N pole piece and the S pole piece are rotated to change a magnetic pole, and an electrical signal is outputted by the sensor according to the change of the magnetic pole so as to define a starting point of the color wheel. The technical scheme is not influenced by light interference and dust pollution, so that the starting point of the color wheel can be simply and accurately defined.
Description
Technical field
The present invention relates to a kind of colour wheel group, relate in particular to a kind of projection arrangement and colour wheel group thereof that can conveniently define the colour wheel starting point.
Background technology
In projector, for Show Color that will be correct according to control signal, colour wheel starting point of essential definition earlier cooperates the demand of algorithm to adjust color again and applies mechanically the time (Index delay).The detecting of existing colour wheel starting point is to adopt infrared reflection formula optical sensor.With reference to Fig. 1, a label (Timing label) 12 is attached on the colour wheel rotating shaft 11 of a colour wheel 10.When this colour wheel 10 rotated, an inductor 1 was towards this colour wheel rotating shaft 11 emissions one light sensing 2.When these colour wheel rotating shaft 11 surfaces of light sensing 2 contacts, this light sensing 2 is reflected by these colour wheel rotating shaft 11 surfaces, and is received by inductor 1.When light sensing 2 these labels 12 of contact, 2 of this light sensings are absorbed by this label, thereby can not receive by sensed device 1.Inductor 1 is exported an electric signal according to the reception condition of light sensing 2, defines the colour wheel starting point by this.But prior art has following two kinds of shortcomings:
(a) light disturbs: the light of projector's internal light disturbs and will cause the sensing result of inductor unusual, can't correctly respond to the colour wheel starting point.
(b) contamination by dust: contamination by dust will cover light emission and the light-receiving window of inductor, cause the sensing result of inductor unusual, can't correctly respond to the colour wheel starting point.
Summary of the invention
The purpose of this invention is to provide a kind of projection arrangement and colour wheel group thereof, light that prior art exists when the induction colour wheel starting point disturbs and the defective of contamination by dust in order to solve.
The invention provides a kind of colour wheel group, comprise a stator, a rotor, a colour wheel and a sensor.Rotor ring is around this stator, this rotor comprises a rotor body, a rotary seat and a counterbalance weight, and this counterbalance weight is arranged on this rotary seat, and this counterbalance weight has a N utmost point portion and a S utmost point portion, this rotor body is barrel-shaped, and this rotary seat is located at an end of this rotor body.Colour wheel is located on this rotor, and sensor is to should counterbalance weight, and when this counterbalance weight rotated, this N utmost point portion and this S utmost point portion is rotated and cause a pole change, this sensor to export an electric signal according to this pole change was for a starting point of this colour wheel of definition.
The invention provides a kind of projection arrangement, it comprises:
One light source provides a light;
One light engine; And
Wheels of the same colour, wherein, described light enters described light engine through described colour wheel group, and described colour wheel group comprises:
One stator;
One rotor, around described stator, described rotor comprises a rotor body, a rotary seat and a counterbalance weight, described counterbalance weight is arranged on the described rotary seat, described counterbalance weight has a N utmost point portion and a S utmost point portion, described rotor body is barrel-shaped, and described rotary seat is located at an end of described rotor body;
One colour wheel is located on the described rotor, and wherein, described light passes described colour wheel; And
One sensor, corresponding described counterbalance weight, when described counterbalance weight rotated, described N utmost point portion and described S utmost point portion were rotated and cause a pole change, described sensor to export an electric signal according to described pole change, for a starting point of the described colour wheel of definition.
The electric signal (Hi/Lo electric signal) that the present invention exports according to this pole change defines the starting point of this colour wheel, and the time (Index Delay) that the demand adjustment color of cooperation algorithm is applied mechanically is to present correct color.Compared with prior art, the colour wheel group of the embodiment of the invention is not subjected to the influence of light interference and contamination by dust, therefore can define the colour wheel starting point simply accurately.
Description of drawings
Fig. 1 is the structural representation of existing colour wheel group;
Fig. 2 is the combination synoptic diagram of the colour wheel group of the embodiment of the invention;
Fig. 3 is the explosive view of the colour wheel group part-structure of the embodiment of the invention;
Be the front view of the colour wheel of the embodiment of the invention with reference to Fig. 4;
Be the sectional view of the colour wheel dependency structure of the embodiment of the invention with reference to Fig. 5;
Fig. 6 A is in the embodiment of the invention, the synoptic diagram of the situation of sensor detecting pole change;
Fig. 6 B is in the embodiment of the invention, the synoptic diagram of the electric signal of exporting according to pole change;
Fig. 7 is the structural representation of the projection arrangement of another embodiment of the present invention;
Fig. 8 A and Fig. 8 B are the synoptic diagram of the variation of the embodiment of the invention.
The primary clustering symbol description:
1: inductor; 2: light sensing;
10: colour wheel; 11: the colour wheel rotating shaft;
12: label; 100: the colour wheel group;
110: stator; 111: axis hole;
112: electromagnetic assembly; 120: rotor;
121: rotor body; 122: counterbalance weight;
123,123 ': N utmost point portion; 124,124 ': S utmost point portion;
125: the magnetic pole boundary line; 126: rotating shaft;
127: rotary seat; 130: colour wheel;
131: the first color regions; 132: the second color regions;
139: the color boundary line; R1: first red area;
R2: second red area; G1: first green area;
G2: second green area; B1: first blue region;
B2: second blue region; 140: sensor;
200: projection arrangement; 210: light source;
211: light; 220: light engine.
Embodiment
Fig. 2 is the combination synoptic diagram of the colour wheel group of the embodiment of the invention, and Fig. 3 is the explosive view of the colour wheel group part-structure of the embodiment of the invention.With reference to Fig. 2 and Fig. 3, the colour wheel group 100 of the embodiment of the invention comprises a stator 110, a rotor 120, a colour wheel 130 and a sensor 140.Rotor 120 is around this stator 110.This rotor 120 comprises a rotor body 121, a rotary seat (Turn table) 127, and a counterbalance weight (Balance Yoke Magnet) 122.This counterbalance weight 122 is arranged on this rotary seat 127.This counterbalance weight 122 has a N utmost point portion 123, a S utmost point portion 124 and a magnetic pole boundary line 125, this magnetic pole boundary line 125 is positioned at the junction of this N utmost point portion 123 and this S utmost point portion 124, this rotor body 121 is barrel-shaped, and this counterbalance weight 122 is located at an end of this rotor body 121.Colour wheel 130 is located on this rotor 120, and is located between this rotor body 121 and this counterbalance weight 122.This magnetic pole boundary line 125 is fixing to ad-hoc location that should colour wheel 130.
With reference to Fig. 4, it is depicted as the front view of colour wheel 130.In the present embodiment, this colour wheel 130 comprises one first color region 131, one second color region 132 and a color boundary line 139, and this magnetic pole boundary line 125 is positioned on the same straight line with this color boundary line 139.This first color region 131 comprises one first red area R1, one first green area G1 and one first basket look zone B1, this second color region 132 comprises one second red area R2, one second green area G2 and one second basket look zone B2, this first green area G1 is between this first red area R1 and this first basket look zone B1, this second green area G2 is between this second red area R2 and this second basket look zone B2, adjacent this second blue region of this first red area R1 B2, adjacent this first blue region of this second red area R2 B1.
With reference to Fig. 5, it is depicted as the sectional view of colour wheel 130 dependency structures, and this rotor 120 also comprises a rotating shaft 126, and this rotating shaft 126 is located on this counterbalance weight 122, and this stator 110 comprises an axis hole 111, and this rotating shaft 126 is inserted among this axis hole 111.This rotor body 121 comprises a permanent magnet, and this stator 110 also comprises a plurality of electromagnetic assemblies 112, and these a plurality of electromagnetic assemblies 112 are around this axis hole 111, and between this axis hole 111 and this rotor body 121.These a plurality of electromagnetic assemblies 112 are arranged in equally spaced mode.
With reference to Fig. 2, Fig. 6 A and Fig. 6 B, 140 pairs of sensors should counterbalance weight 122, when this colour wheel 130 and 122 rotations of this counterbalance weight, this N utmost point portion 123 and this S utmost point portion 124 are rotated and cause a pole change, this sensor 140 is exported an electric signal (Hi/Lo electric signal) according to this pole change, for a starting point of this colour wheel 130 of definition, and the time (Index Delay) that the demand adjustment color of cooperation algorithm is applied mechanically is to present correct color.Compared with prior art, the colour wheel group of the embodiment of the invention is not subjected to the influence of light interference and contamination by dust, therefore can define the colour wheel starting point simply accurately.
Other it should be noted that, because the magnetic force of this N utmost point portion 123 and this S utmost point portion 124 also can penetrate overwinding transposase 11 27, therefore in other embodiment, this sensor 140 also can be arranged at a side (not shown) of rotary seat 127, and this sensor 140 can detect the pole change of counterbalance weight 122 equally and reach concept of the present invention like this.
In the above-described embodiments, colour wheel 130 has the first red area R1, the first green area G1, the first basket look zone B1, the second red area R2, the second green area G2 and second basket look zone B2.But it does not limit the present invention, colour wheel of the present invention also can be other pattern, for example, only has a red area, a green area and a basket look zone, or, have a red area, a green area, basket look zone and a white (transparent) zone etc.
In the above-described embodiments, this magnetic pole boundary line and this color boundary line are positioned on the same straight line, but do not limit the present invention.The arbitrary position of magnetic pole boundary line on can corresponding colour wheel only needs to cooperate the demand of algorithm to adjust time (Index Delay) that color applies mechanically namely to present correct color.
In the above-described embodiments, be example with outside rotor-type DC brushless motor, but it does not limit the present invention, the motor of other pattern also can be applicable to the present invention.
With reference to Fig. 7, the projection arrangement 200 that it is depicted as another embodiment of the present invention comprises a light source 210, a light engine 220 and aforesaid colour wheel group 100.Light source 210 provides a light 211.Light 211 enters this light engine 220 through this colour wheel group 100.Wherein, this sensor 140 is between this colour wheel 130 and this light source 210.
Fig. 8 A and Fig. 8 B are the synoptic diagram of the variation of the embodiment of the invention, and wherein, formation has or not the sector between N utmost point portion 123 ' and the S utmost point portion 124 ', and N utmost point portion 123 ' is not connected each other with S utmost point portion 124 '.Shown in Fig. 8 A and Fig. 8 B, N utmost point portion 123 ' and S utmost point portion 124 ' can change arbitrarily.
Though the present invention discloses as above with concrete preferred embodiment; but be not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; still can do a little change or be equal to replacement, so protection domain of the present invention should be as the criterion with the scope that claims were defined.
Claims (13)
1. a colour wheel group is characterized in that, comprising:
One stator;
One rotor, around described stator, described rotor comprises a rotor body, a rotary seat and a counterbalance weight, described counterbalance weight is arranged on the described rotary seat, described counterbalance weight has a N utmost point portion and a S utmost point portion, described rotor body is barrel-shaped, and described rotary seat is located at an end of described rotor body;
One colour wheel is located on the described rotor; And
One sensor, corresponding described counterbalance weight, when described counterbalance weight rotates, described N utmost point portion and described S utmost point portion are rotated and cause a pole change, described sensor is exported an electric signal according to described pole change, for a starting point of the described colour wheel of definition, wherein, described counterbalance weight is located at an end of described rotor body, and described colour wheel is located between described rotor body and the described counterbalance weight.
2. colour wheel group according to claim 1, it is characterized in that, described counterbalance weight also has a magnetic pole boundary line, described magnetic pole boundary line is positioned at the junction of described N utmost point portion and described S utmost point portion, described colour wheel comprises one first color region, one second color region and a color boundary line, and described magnetic pole boundary line and described color boundary line are positioned at same straight line.
3. colour wheel group according to claim 2, it is characterized in that, described first color region comprises one first red area, one first green area and one first blue region, described second color region comprises one second red area, one second green area and one second blue region, described first green area is between described first red area and described first blue region, described second green area is between described second red area and described second blue region, adjacent described second blue region of described first red area, adjacent described first blue region of described second red area.
4. colour wheel group according to claim 1 is characterized in that, described rotor also comprises a rotating shaft, and described rotating shaft is located on the described counterbalance weight, and described stator comprises an axis hole, and described rotating shaft is inserted among the described axis hole.
5. colour wheel group according to claim 4, it is characterized in that described rotor body comprises a permanent magnet, described stator also comprises a plurality of electromagnetic assemblies, described a plurality of electromagnetic assembly is around described axis hole, and between described axis hole and described rotor body.
6. colour wheel group according to claim 5 is characterized in that, described a plurality of electromagnetic assemblies are arranged in equally spaced mode.
7. projection arrangement is characterized in that comprising:
One light source provides a light;
One light engine; And
Wheels of the same colour, wherein, described light enters described light engine through described colour wheel group, and described colour wheel group comprises:
One stator;
One rotor, around described stator, described rotor comprises a rotor body, a rotary seat and a counterbalance weight, described counterbalance weight is arranged on the described rotary seat, described counterbalance weight has a N utmost point portion and a S utmost point portion, described rotor body is barrel-shaped, and described rotary seat is located at an end of described rotor body;
One colour wheel is located on the described rotor, and wherein, described light passes described colour wheel; And
One sensor, corresponding described counterbalance weight, when described counterbalance weight rotates, described N utmost point portion and described S utmost point portion are rotated and cause a pole change, described sensor is exported an electric signal according to described pole change, for a starting point of the described colour wheel of definition, wherein, described counterbalance weight is located at an end of described rotor body, and described colour wheel is located between described rotor body and the described counterbalance weight.
8. projection arrangement according to claim 7, it is characterized in that, described counterbalance weight also has a magnetic pole boundary line, described magnetic pole boundary line is positioned at the junction of described N utmost point portion and described S utmost point portion, described colour wheel comprises one first color region, one second color region and a color boundary line, and described magnetic pole boundary line and described color boundary line are positioned on the same straight line.
9. projection arrangement according to claim 8, it is characterized in that, described first color region comprises one first red area, one first green area and one first blue region, described second color region comprises one second red area, one second green area and one second blue region, described first green area is between described first red area and described first blue region, described second green area is between described second red area and described second blue region, adjacent described second blue region of described first red area, adjacent described first blue region of described second red area.
10. projection arrangement according to claim 7 is characterized in that, described rotor also comprises a rotating shaft, and described rotating shaft is located on the described counterbalance weight, and described stator comprises an axis hole, and described rotating shaft is inserted among the described axis hole.
11. projection arrangement according to claim 10, it is characterized in that described rotor body comprises a permanent magnet, described stator also comprises a plurality of electromagnetic assemblies, described a plurality of electromagnetic assembly is around described axis hole, and between described axis hole and described rotor body.
12. projection arrangement according to claim 11 is characterized in that, described a plurality of electromagnetic assemblies are arranged in equally spaced mode.
13. projection arrangement according to claim 7 is characterized in that, described sensor is between described colour wheel and described light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010256210.9A CN102375198B (en) | 2010-08-16 | 2010-08-16 | Projection device and color wheel set thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010256210.9A CN102375198B (en) | 2010-08-16 | 2010-08-16 | Projection device and color wheel set thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102375198A CN102375198A (en) | 2012-03-14 |
| CN102375198B true CN102375198B (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010256210.9A Expired - Fee Related CN102375198B (en) | 2010-08-16 | 2010-08-16 | Projection device and color wheel set thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102375198B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104199248B (en) * | 2014-08-29 | 2016-11-30 | 苏州佳世达光电有限公司 | A kind of scialyscope |
| CN107561839A (en) * | 2017-09-29 | 2018-01-09 | 明基电通有限公司 | Colour wheel module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101257274A (en) * | 2007-02-28 | 2008-09-03 | 佳能株式会社 | Motor driving apparatus |
| CN101339352A (en) * | 2007-07-02 | 2009-01-07 | 中强光电股份有限公司 | Color wheel module and projection device possessing same |
-
2010
- 2010-08-16 CN CN201010256210.9A patent/CN102375198B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101257274A (en) * | 2007-02-28 | 2008-09-03 | 佳能株式会社 | Motor driving apparatus |
| CN101339352A (en) * | 2007-07-02 | 2009-01-07 | 中强光电股份有限公司 | Color wheel module and projection device possessing same |
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| Publication number | Publication date |
|---|---|
| CN102375198A (en) | 2012-03-14 |
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