CN2578851Y

CN2578851Y - Colour wheels

Info

Publication number: CN2578851Y
Application number: CN 02247498
Authority: CN
Inventors: 金克恕; 张智能; 张光华; 耿英泰; 余安华
Original assignee: Prodisc Technology Inc
Current assignee: Prodisc Technology Inc
Priority date: 2002-08-26
Filing date: 2002-08-26
Publication date: 2003-10-08
Anticipated expiration: 2012-08-26

Abstract

The utility model relates to a color wheel which comprises a motor main body, an axial center cover, a spacer and a color optical filter, wherein the axial center cover is arranged on one side of the motor main body in the axial center direction; the spacer is sheathed on the axial center cover; the color optical filter is arranged on the surface opposite to the surface of the spacer, which is adjacent to the axial center cover. Thus, a concave part is formed between the color optical filter and the axial center cover.

Description

Colour wheel

Technical field

The utility model relates to a kind of colour wheel, is meant a kind of colour wheel that is applied to the digital light processor especially.

Background technology

Image projecting system is one of the most popular branch in present opto-electronics, digital light processor (Digital Light Processing wherein, DLP) because of it has that brightness height, reaction time are short, noiseless 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, be to replace in traditional liquid crystal projector by the digital micro-mirror chip, be responsible for presenting the liquid crystal panel of image.Owing to have many small movable lens on the digital micro-mirror chip, control movable lens angle of inclination and deflection period with drive electrode, 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 2.Colour wheel 2 mainly comprises a cover plate 21, a colored filter 22 and a motor 23.Wherein, cover plate 21 is fixed on the motor 23 with colored filter 22.At this, motor 23 mainly is made up of axle center lid 231 and one motor body 232.

From the above mentioned, change, when center of rotation departs from rotating shaft core, that is work as center of rotation not on rotating shaft core, then can cause the vibrations of colour wheel and the formation of noise, more can influence the fiduciary level in the running because general colour wheel all is higher than 7200 with the rotating speed of motor.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art and defective, a kind of recoverable center of rotation is provided, reduces vibrations and noise, increases the colour wheel that turns round fiduciary level and shorten manufacturing time.

For reaching above-mentioned purpose, the utility model provides a kind of colour wheel, comprises a motor body, axle center lid, a pad and a colored filter.Wherein, the axle center lid is arranged at a side of an axis direction of motor body; Pad is sheathed on the axle center and covers; Colored filter is arranged at pad and the opposite face of adjacent one side is covered in the axle center, is formed with a recess thereby make between colored filter and the axle center lid.

From the above mentioned, the utility model provides a kind of colour wheel, utilizes one to add counterweight and be arranged in the formed special recesses of pad, in order to proofread and correct the position of center of rotation.Compared with prior art, in the utility model that counterweight is chimeric or bind in this special recesses, this measure can reduce the difficulty on the location.Moreover, because counterweight is arranged in the recess, can also not reduce the influence of centrifugal force simultaneously because of evagination has the possibility of being collided in colour wheel.Again, the utlity model has the function of proofreading and correct center of rotation, not only reduce the generation of colour wheel vibrations and noise, further increase the fiduciary level of running.In addition,, in manufacture process, can utilize the irradiation step to shorten the bonding time of colored filter, pad and axle center lid, more reduce manufacturing cost because pad is a transparency material.

Description of drawings

Fig. 1 is the diagrammatic cross-section of existing colour wheel;

Fig. 2 is the diagrammatic cross-section of the colour wheel of the utility model embodiment;

Fig. 3 is for being the stereographic map of Fig. 2;

Fig. 4 is the part three-dimensional exploded view of Fig. 3.

Symbol description among the figure

1 colour wheel

11 motor bodies

12 axle center lid

13 pads

14 colored filters

15 cover plates

16 spacers

2 colour wheels

21 cover plates

22 colored filters

23 motors

231 axle center lid

232 motor bodies

Embodiment

Hereinafter with reference to relevant drawings, the colour wheel of an embodiment of the present utility model is described.

As shown in Figure 2, the colour wheel 1 of present embodiment comprises a motor body 11, axle center lid 12, one pad 13 and a colored filter 14.

Wherein, axle center lid 12 is arranged at a side of an axis direction of motor body 11; Pad 13 is sheathed on the axle center lid 12; Colored filter 14 is arranged at pad 13 and covers the opposite face of 12 adjacent one sides with the axle center, is formed with a recess thereby make between colored filter 14 and the axle center lid 12.

In the present embodiment, motor body 11 mainly is made up of a magnet circle (not being shown in figure), a siliconized plate (not being shown in figure) and a coil (not being shown in figure).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.

As shown in Figure 2, pad 13 is sheathed on the axle center lid 12.In present embodiment, pad 13 is a transparency material.At this, the material of pad 13 is glass or transparent polymer substance, for example acrylate.Moreover pad 13 is a ring-like pad, also can be an approximate ring-like pad.

Please refer to Fig. 2 again, colored filter 14 is arranged at the opposite face that 12 adjacent one sides are covered in pad 13 and axle center, makes colored filter 14 and axle center be formed with a recess between covering 12.Wherein, colored filter 14 can be chimeric or be bonding on the pad 13.At this, colored filter 14 serve as reasons redness, green and the blue formed circular filter of three looks fan-shaped optical filter.Certainly, colored filter 14 also can be one and adds the formed circular filter of white transparent block with red, green, blue three looks, or a ring-like optical filter.

Fig. 3 is the stereographic map of Fig. 2, and Fig. 4 is the part three-dimensional exploded view of Fig. 3.

Please refer to Fig. 3 and Fig. 4 again, present embodiment more comprises a cover plate 15, is arranged on the colored filter 14.Wherein, cover plate 15 can be chimeric or be binded on colored filter 14.In this, cover plate 15 is in order to increase the bonding area between colored filter 14, pad 13 and the axle center lid 12.

Please refer to Fig. 3 and Fig. 4 again, present embodiment more comprises a spacer 16, and motor body 11 is located on the spacer 16.Spacer 16 is connected with a driver (not being shown in figure) with an electric wire (not being shown in figure), and this driver is in order to CD-ROM drive motor body 11, and a bit (rotating shaft core) established with

spacer

16 and 11 of motor bodies is that rotate at the center.

In present embodiment, the rotating speed of colour wheel 1 all is higher than 7200 to be changeed, thus colour wheel 1 after rotating a period of time, center of rotation may depart from the rotating shaft core (not being shown in figure) because use down for a long time.When center of rotation is not positioned at rotating shaft core, when rotating, cause vibrations easily and produce noise, also can influence the fiduciary level of running simultaneously.

In present embodiment, utilize one to add the correction that counterweight carries out center of rotation.Wherein, counterweight can be any block with weight.The method of proofreading and correct is that counterweight is embedded in the special recesses that forms with pad 13, that is in the recess between colored filter 14 and the axle center lid 12.And,, locate with machine and to adjust the position of counterweight in recess according to the degree of center of rotation displacement.Certainly, counterweight can also the bonding mode be fixed in the recess.

Moreover, because pad 13 is a transparency material,, can utilize a light binding under the irradiation condition, to carry out fixing step at 12 o'clock, to increase the speed of binding so covered in bonding colored filter 14, pad 13 and axle center.At this, light binding can be a ultraviolet optical cement.

Colour wheel provided by the utility model can add a counterweight to the formed special recesses of pad, so as to proofreading and correct the center of rotating.Compared with prior art, the utility model with counterweight chimeric or be bonding on special recesses after, can reduce the difficulty on the location.Moreover, because counterweight can be arranged in the recess, can more not reduce the influence of centrifugal force simultaneously because of evagination has the possibility of being collided in colour wheel to counterweight.Because the center of rotation of recoverable colour wheel has further reduced the vibrations of colour wheel and the generation of noise, also increase the fiduciary level of running again.In addition, pad is a transparency material, can utilize the irradiation step to shorten the bonding time of colored filter, pad and axle center lid, shortens the manufacturing time of colour wheel, and then reduces manufacturing cost.

Above-mentioned only is illustrative, but not is restricted person.Anyly do not break away from spirit of the present utility model 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 comprises

One motor body;

One axle center is covered, and is arranged at a side of an axis direction of this motor body;

One pad is sheathed on this axle center and covers; And

One colored filter is arranged at this pad and the opposite face of adjacent one side is covered in this axle center, is formed with a recess thereby make between this colored filter and this axle center lid.

2. colour wheel as claimed in claim 1 is characterized in that, this pad is a transparency material.

3. colour wheel as claimed in claim 2 is characterized in that, the material of this pad is a glass.

4. colour wheel as claimed in claim 2 is characterized in that, the material of this pad is an acrylate.

5. colour wheel as claimed in claim 1 is characterized in that, this pad is a ring-like pad.

6. colour wheel as claimed in claim 1 is characterized in that, more comprises a cover plate, is arranged on this colored filter.

7. colour wheel as claimed in claim 1 is characterized in that, more comprises a spacer, and this motor drive shaft is located on this spacer.