CN100399186C

CN100399186C - Colour wheel

Info

Publication number: CN100399186C
Application number: CNB2004100683601A
Authority: CN
Inventors: 金克恕; 张光华; 王志煌
Original assignee: Prodisc Technology Inc
Current assignee: Prodisc Technology Inc
Priority date: 2004-08-31
Filing date: 2004-08-31
Publication date: 2008-07-02
Anticipated expiration: 2024-08-31
Also published as: CN1743946A

Abstract

The present invention relates to a color wheel which comprises a motor, a spacer, a color filter and at least one first fixing member, wherein the spacer is positioned at one side of the motor, the color filter is connected with the spacer, and the first fixing member penetrates through the color filter and the spacer.

Description

Colour wheel

Technical field

The present invention relates to a kind of colour wheel, in particular for the colour wheel of optical projection system.

Background technology

Image projecting system is one of the most popular subitem in present opto-electronics, digital light processor (Digital Light Processing wherein, DLP) because of it has that brightness height, reaction time are short, no noise and several advantages such as compact, become the mainstream technology in the digital projector.

DLP formula projector adopts digital control, utilizes the reflected light principle to carry out start simultaneously.With light-source collecting and via after the lens focus, pass the colored filter of redgreenblue optical filter, be projected to the digital micro-mirror chip (Digital Micro-mirror Device, DMD) on.In this technology, replace in traditional liquid crystal projector by the digital micro-mirror chip, be responsible for presenting the liquid crystal panel of image.Many small movable lens on the digital micro-mirror chip utilize drive electrode to control movable lens angle of inclination and deflection period, and the reflection direction by switches light throws imaging by camera lens again.

As shown in Figure 1, in DLP formula projector, be provided with one in order to colorific colour wheel 1.Wherein, colour wheel 1 mainly comprises a motor 11, a cover plate 12 and a colored filter 13.Wherein, cover plate 12 is fixed on the motor 11 with colored filter 13.At this, motor 11 mainly is made up of axle center lid 111 and one motor body 112.In addition, colour wheel 1 more can comprise positioning piece 14, and a winding displacement 15.This keeper 14 is fixed in colour wheel 1 in the optical projection system, and winding displacement 15 is connected with a driver, and this driver is in order to CD-ROM drive motor body 112, and a bit (rotating shaft core) of establishing with

keeper

14 and 112 of motor bodies is that rotate at the center.

The employed colored filter 13 of industrial community is utilized and is sticked together glue to be fixed on the motor 11 by the glass plate of several pieces different colours at present.Because general colour wheel all is higher than 7200 commentaries on classics with the rotating speed of motor 11, when center of rotation departs from rotating shaft core, when carrying out high speed rotating, the required rotation pulling force (centrifugal force) that bears of single glass is quite big.In addition, the heat resisting temperature that sticks together glue is about 150 ℃ to 180 ℃, in general image projecting system, the temperature that the light source heating is produced is about 150 ℃ to 200 ℃, so stick together the problem that embrittlement takes place glue easily under this temperature, easily causes the adhesion of 11 in colored filter 13 and motor to descend, when high speed rotating centrifugal force becomes big, then easily cause colored filter 13 centre-of gravity shift rotating shaft cores, and the situation that produces displacement even come off, and then cause deterioration in quality.

Because the problems referred to above, the inventor urgently thinks a kind ofly to solve the easy displacement of colored filter even the colour wheel of problem such as come off.

Summary of the invention

Because above-mentioned problem the objective of the invention is to overcome the deficiencies in the prior art and defective, provide a kind of colour wheel that utilizes fixture locking pad and colored filter.

For reaching above-mentioned purpose, the invention provides a kind of colour wheel, comprise a motor, a pad, sticks together glue, to bind this pad and this motor; One colored filter and at least one first fixture.Wherein, pad is positioned at a side of motor, and colored filter engages with pad, and first fixture wears colored filter and pad.

From the above, the invention provides a kind of colour wheel, it utilizes fixture with pad and colored filter combination.Compared with prior art, colour wheel of the present invention can reduce the consumption that binds glue, even can not use bonding glue, uses fixture that pad and colored filter are fixed on the motor instead.Thus, phenomenon can be avoided or reduce, and then the quality of product can be promoted because of the skew of bonding glue colored filter that embrittlement causes.Moreover, the hole that the axle center covers is except combining with fixture, outside setting-up piece, colored filter, the hole that the axle center covers more can be used as the usefulness of the rotary balance correction of colour wheel, needs according to balance, fixture or column are considered as counterweight, and the hole on different azimuth is inserted fixture or column, can carry out the rotary balance of colour wheel and proofread and correct.In addition, pad has the buffering colored filter and combines with motor or the strength sealed with fixture, can avoid damaging colored filter.

Description of drawings

Fig. 1 is a synoptic diagram of existing colour wheel;

Fig. 2 is a diagrammatic cross-section of the colour wheel of preferred embodiment of the present invention;

Fig. 3 is another diagrammatic cross-section of the colour wheel of preferred embodiment of the present invention;

Fig. 4 is a synoptic diagram of the colour wheel of preferred embodiment of the present invention, and wherein the axle center covers and has a plurality of the 3rd holes;

Fig. 5 is the another diagrammatic cross-section of the colour wheel of preferred embodiment of the present invention, and wherein colour wheel more comprises a bonding glue;

Fig. 6 is a diagrammatic cross-section again of the colour wheel of preferred embodiment of the present invention, and wherein colour wheel more comprises one second fixture;

Fig. 7 is a diagrammatic cross-section again of the colour wheel of preferred embodiment of the present invention, and wherein colour wheel more comprises one second fixture and a column;

Fig. 8 is a synoptic diagram of the axle center lid of the colour wheel of preferred embodiment of the present invention.

Symbol description among the figure

1 colour wheel

11 motors

111 axle center lid

112 motor bodies

12 cover plates

13 colored filters

14 keepers

15 winding displacements

2 colour wheels

21 motors

211 axle center lid

212 motor bodies

213 the 3rd holes

214 the 4th holes

215 the 5th holes

216 columns

22 pads

221 first holes

23 colored filters

231 second holes

24 first fixtures

25 keepers

26 winding displacements

27 stick together glue

28 second fixtures

29 bolsters

Embodiment

Hereinafter with reference to relevant drawings, the colour wheel according to preferred embodiment of the present invention is described.

As shown in Figure 2, colour wheel 2 comprises a motor 21, a pad 22, a colored filter 23 and at least one first fixture 24.

Motor 21 has axle center lid 211 and one motor body 212, and axle center lid 211 is arranged at a side of an axis direction of motor body 212.Wherein, motor body 212 mainly is made up of a magnet circle, a siliconized plate and a coil.When coil electricity, siliconized plate produces magnetic force and magnetic field, and allows magnetic field that orderly variation takes place by positive and negative and the intensity of electrical current, also is a rotating magnetic field, makes magnet circle and rotating magnetic field effect and then formation rotation.

Pad 22 is positioned at a side of motor 21.In the present embodiment, the material of pad 22 can be metal or plastics.

Colored filter 23 engages with pad 22.In the present embodiment, colored filter 23 can be one by red, green and the blue formed circular filter of three looks fan-shaped optical filter.As shown in Figure 4, colored filter 23 also can be one and adds the formed annular filter mating plate of white transparent block with red, green, blue three looks, or a circular filter.And the color block on the colored filter 23 can utilize the gold-tinted processing procedure, and the needed color of actual product is plated on the colored filter 23.

First fixture 24 wears colored filter 23 and pad 22.Wherein, first fixture 24 can be a screw, a screw assembly (comprising a screw and a nut) or a riveted spare (for example being the rivet of metal material or the riveting post of plastic material).In the present embodiment, first fixture 24 is an example with the screw.Certainly, first fixture 24 and colored filter 23 and pad 22 can be added elastic washer with increase friction force (not being shown among the figure) fixedly the time.In addition, first fixture 24 passes pad 22, colored filter 23 to be fixed on the motor 21, and pad 22 has the strength that buffering first fixture 24 is fixed, in order to avoid damage colored filter 23.

Please refer to Fig. 2, in the present embodiment, colour wheel 2 more can comprise positioning piece 25, and a winding displacement 26.Keeper 25 utilizes winding displacement 26 to be connected with a driver, and this driver is in order to CD-ROM drive motor body 212, and a bit (rotating shaft core) of establishing with

keeper

25 and 212 of motor bodies is that rotate at the center.

Please refer to Fig. 2 again, in the present embodiment, pad 22 has at least one first hole 221, and colored filter 23 has at least one second hole, 231, the first fixtures 24 and wears first hole 221 and second hole 231, with locking pad 22 and colored filter 23.

In the present embodiment, axle center lid 211 more comprises at least one the 3rd hole 213, be arranged in first fixture 24 of pad 22, colored filter 23, more can be arranged in the 3rd hole 213 of axle center lid 211, make pad 22, colored filter 23 together be fixed on the motor 21.Wherein, the 3rd hole 213 and first hole 221 and second hole 231 are relative and establish.In addition, pad 22 also can be replaced with the position of colored filter 23, as shown in Figure 3, makes pad 22 directly contact with motor 21.At this moment, first fixture 24 passes colored filter 23, and pad 22 in regular turn, and being fixed on the motor 21, and pad 22 has the strength that buffering colored filter 23 combines with motor 21, in order to avoid damage colored filter 23.

Please refer to Fig. 3 and shown in Figure 4, in the present embodiment, axle center lid 211 also can have a plurality of the 3rd holes 213, and except in order to fixing with first fixture 24, the 3rd hole 213 can be used as the usefulness of the balance correction of colour wheel 2.That is to say, when first fixture 24 combines with the 3rd hole 213, after being fixed in pad 22 and colored filter 23 on the motor 21, the 3rd remaining hole 213 carries out the rotary balance timing in colour wheel 2, can be with first fixture 24 as counterweight, on the different azimuth of axle center lid 211, first fixture 24 is incorporated in the 3rd hole 213, to reach rotary balance.

(please refer to Fig. 2 and Fig. 3) except utilizing first fixture 24 that pad 22 and colored filter 23 are fixed in the motor 21, please refer to shown in Figure 5, pad 22 is with after colored filter 23 utilizes first fixture 24 to combine, recycling one sticks together glue 27 coats on the pad 22, to bind with motor 21.

As Figure 6 and Figure 7, in the present embodiment, colour wheel 2 more can comprise one second fixture 28, for example is a screw or a riveted spare, utilizes second fixture 28 that pad 22 is fixed on the motor 21.Thus, the colored filter 23 that combines with pad 22 also can indirect securement on motor 21.

Please refer to Fig. 7, in the present embodiment, axle center lid 211 can comprise more that one the 4th hole, 214, the second fixtures 28 wear pad 22 and combine with the 4th hole 214 of axle center lid 211.Please refer to Fig. 7 again, in the present embodiment, colour wheel 2 can comprise more that a bolster 29, the second fixtures 28 wear pad 22, bolster 29 and fixing with motor 21.Cushion effect when bolster 29 can provide second fixture 28 and motor 21 fixedly.

As shown in Figures 7 and 8, the 4th hole 214 is except in order to fixing with second fixture 28, and the 4th hole 214 can be used as the usefulness of the balance correction of colour wheel 2.That is to say, when second fixture 28 combines with the 4th hole 214, pad 22 and colored filter 23 are fixed in after the motor 21 indirectly, remaining the 4th hole 214 carries out the rotary balance timing in colour wheel 2, can be with second fixture 28 as counterweight, on the different azimuth of axle center lid 211, second fixture 28 is incorporated in the 4th hole 214, to reach rotary balance.

Please refer to Fig. 7 again, in the present embodiment, axle center lid 211 more can comprise at least one the 5th hole 215, one columns 216 and wear the usefulness that the 5th hole 215, the five holes 215 can be used as the balance correction of colour wheel 2.Wherein, column 216 can be a screw or a riveted spare.That is to say, when balance correction, utilize column 216 to combine, column 216 can be considered as counterweight, on the different azimuth of axle center lid 211, column 216 is incorporated in the 5th hole 215, to reach rotary balance with the 5th hole 215.

In sum, colour wheel of the present invention, it utilizes fixture with pad and colored filter combination.Compared with prior art, colour wheel of the present invention can reduce the consumption that binds glue, even can not use bonding glue, uses fixture that pad and colored filter are fixed on the motor instead.Thus, phenomenon can be avoided or reduce, and then the quality of product can be promoted because of the skew of bonding glue colored filter that embrittlement causes.Moreover, the hole that the axle center covers is except combining with fixture, outside setting-up piece, colored filter, the hole that the axle center covers more can be used as the usefulness of the rotary balance correction of colour wheel, needs according to balance, fixture is considered as counterweight, and the hole on different azimuth is inserted fixture, can carry out the rotary balance of colour wheel and proofread and correct.In addition, pad has the buffering colored filter and combines with motor or the strength sealed with fixture, can avoid damaging colored filter.

The above only is an illustrative, but not is restricted.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the scope of claims its equivalent modifications of carrying out or change.

Claims

1. a colour wheel is characterized in that, comprises:

One motor;

One pad, it is positioned at a side of this motor;

One sticks together glue, to bind this pad and this motor;

One colored filter, it engages with this pad; And

At least one first fixture, it wears this colored filter and this pad.

2. colour wheel as claimed in claim 1, wherein, this pad has at least one first hole, and this colored filter has at least one second hole, and this first fixture wears this first hole and this second hole.

3. colour wheel as claimed in claim 1, wherein, this motor has an axle center lid and a motor body, and this axle center lid is arranged at a side of an axis direction of this motor body.

4. colour wheel as claimed in claim 3, wherein, this axle center lid more comprises at least one the 3rd hole, and this first fixture wears this pad, this colored filter, reaches the 3rd hole.

5. colour wheel as claimed in claim 1, wherein, this first fixture is a screw or a riveted spare.

6. colour wheel as claimed in claim 3, wherein, this axle center lid more comprises at least one the 5th hole, and a column wears the 5th hole.

7. colour wheel as claimed in claim 6, wherein, this column is a screw or is a riveted spare.

8. colour wheel as claimed in claim 3 wherein, more comprises at least one second fixture and a bolster, and this second fixture wears this pad, this bolster and fixes with this motor.

9. colour wheel as claimed in claim 8, wherein, this second fixture is a screw or is a riveted spare.

10. colour wheel as claimed in claim 8, wherein, this axle center lid more comprises at least one the 4th hole, and this second fixture wears this pad and the 4th hole.