CN1303450C - Balance type optical element assembly - Google Patents
Balance type optical element assembly Download PDFInfo
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- CN1303450C CN1303450C CNB200410000166XA CN200410000166A CN1303450C CN 1303450 C CN1303450 C CN 1303450C CN B200410000166X A CNB200410000166X A CN B200410000166XA CN 200410000166 A CN200410000166 A CN 200410000166A CN 1303450 C CN1303450 C CN 1303450C
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- optical elements
- load
- type optical
- carrying unit
- balanced type
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Abstract
The present invention provides a balance type optical element group which comprises an optical element, a carrying element and a motor, wherein the optical element is carried by one side of the carrying element having a plurality of protrusions used as weights; the motor is combined with the other side of the carrying element and drives the optical element to rotate.
Description
Technical field
The present invention relates to a kind of optical elements sets, particularly a kind of have a plurality of balanced type optical elements sets that can be used as the protuberance of counterweight.
Background technology
In recent years, progress along with science and technology, the application of optical element also development is constantly popularized, and these optical elements comprise that the behavior that can make light produces wavefront and changes that (for example grating-Grating), path turnover (for example catoptron-Mirror, prism-Prism, spectroscope-BS orPBS), color select that (for example color filter-Filter), polarization state are selected (for example polaroid-Polarizer, wave plate-Retarder) or the like.
To be applied to optical element in the barcode scanner as representative, for example a polygonal level crossing (polygon mirror), a colour wheel (color wheel) or drum of the same colour (color drum) are to illustrate the correlation technique of this type of optical element with next.
Bar code can mark information such as producing country, manufacturing firm, trade name, date of manufacture, book classification number, mail start-stop place, classification, the date of commodity, thereby has all obtained using widely in fields such as circulation of commodities, taking care of books and bank account systems.
And barcode scanner (Bar code scanner) partly is made up of light source, optical scanning, optics reception, opto-electronic conversion, signal amplification, shaping, quantification and decoding etc.Wherein, rotating prism is one of considerable optical element in the optical scanning portion, and the single beam that light source sent after the process rotating prism carries out beam split, can form multidirectional scanning ray, to carry out the scanning of the bar code (Bar code) on the article.Then, because the object of different colours, the wavelength of visible light difference of its reflection, so work as the light that the light source of barcode scanner sends, when shining on the chequered with black and white bar code through beam split formation scanning light beam, after reflected light meeting planoconvex lens focuses on, shine on the photoelectric commutator, so photoelectric commutator receives and informal voucher and the corresponding strong and weak different reflected light signal of secret note.Again through conversion, amplification, shaping, quantification and the decoding of oversampling circuit, bar symbol can be changed into corresponding digital, character information afterwards, give computer system by interface circuit and carry out data processing and management, just finish all processes that bar code is understood.
As shown in Figure 1, the polygonal level crossing group 1 of the rotation in the known barcode scanner comprises a motor 11, one a polygonal level crossing 12 and a cover plate 13.Wherein, cover plate 13 is fixed on the motor 11 with polygonal level crossing 12, and motor 11 mainly is made up of a motor body 111 and 112 on axle center lid.In addition, rotate polygonal level crossing group 1, more can comprise positioning piece 14, and a winding displacement 15.This keeper 14 utilizes winding displacement 15 to be connected with a driver (not being shown among the figure), and this driver is in order to CD-ROM drive motor body 111, and a bit (rotating shaft core) of establishing with keeper 14 and 111 of motor bodies is that rotate at the center.
Because the general rotating speed that drives the motor of optical element rotation all is higher than 7200 rev/mins.Therefore, when center of rotation departs from rotating shaft core, that is when center of rotation is not on rotating shaft core, cause the vibrations of optical element and noise to produce easily, also can influence the fiduciary level in the running.
And prior art is in the rotary balance adjustment of rotary optical element, great majority are directly to apply adhesive agent (being counterweight) on motor or cover plate, utilize the weight of adhesive agent to adjust the center of gravity of optical element, but the method cause mechanism or light path to interfere easily; In addition, it is directly to hole on cover plate that known techniques is also arranged, as the mode of adjusting rotary balance.But, because when directly holing on the cover plate, need to use the utensil of boring, operation is inconvenient, and, then cause the damage of below motor bearing easily if operator's application of force is not controlled well, and the metal fillings that drops by boring, even can pollute and the scratch optical element surface, cause the yield of product to descend.
Because the problems referred to above, a kind of " balanced type optical elements sets " that can solve above-mentioned rotary balance adjustment problem urgently thought because of in this in this case inventor whence.
Summary of the invention
Because above-mentioned problem, purpose of the present invention is adjusted the rotary balance of optical elements sets for the balance optical elements sets that has a plurality of protuberances as counterweight on a kind of load-carrying unit is provided by protuberance.
Edge is for achieving the above object, according to a kind of balanced type optical elements sets of the present invention, to comprise an optical element; One load-carrying unit, the one side is carried this optical element, and this load-carrying unit has a plurality of protuberances as counterweight; A plurality of external members, described external member are socketed on respectively on the described protuberance; And a motor, it combines with the opposite side of this load-carrying unit, and drives this optical element rotation.
From the above, because of a kind of balanced type optical elements sets according to the present invention, especially have the balanced type optical elements sets of a plurality of protuberances as counterweight on load-carrying unit, its utilization removes the protuberance that is preset on the load-carrying unit, adjusts the rotary balance of optical element.Compare with known techniques, the present invention has overthrown and had used the mode of adding counterweight in the past, adjusts the rotary balance of optical elements sets.The present invention is on load-carrying unit, is provided with the protuberance that conveniently removes as counterweight in advance, so when adjusting rotary balance, only need protuberance is directly divested, alleviating the weight of load-carrying unit on this orientation, and then having adjusted the center of gravity of whole optical elements sets, is a kind of quite easy mode.In addition, balanced type optical elements sets of the present invention more can have an external member.This external member also can be used as counterweight, is linked on the protuberance, to increase the weight of load-carrying unit.And when desiring to alleviate the weight of load-carrying unit, can remove the external member that is sleeved on the protuberance earlier, if still need further alleviate the weight in this orientation, just peel off protuberance, error in the time of not only can avoiding operating personnel to adjust rotary balance thus takes place, and has more increased the fine adjustment function of optical elements sets rotary balance.
Description of drawings
Fig. 1 is the known polygonal level crossing group of rotation schematic side view;
Fig. 2 is a balanced type optical elements sets schematic side view of the present invention;
Fig. 3 is the load-carrying unit schematic top plan view of balanced type optical elements sets of the present invention;
Fig. 4 is another schematic top plan view of load-carrying unit of balanced type optical elements sets of the present invention;
Fig. 5 is another schematic side view of balanced type optical elements sets of the present invention;
Fig. 6 is the another schematic top plan view of load-carrying unit of balanced type optical elements sets of the present invention; And
Fig. 7 is the load-carrying unit of a balanced type optical elements sets of the present invention schematic top plan view again.
Embodiment
For making content of the present invention easier to understand,, the balanced type optical elements sets of the preferred embodiment according to the present invention is described hereinafter with reference to correlative type.
As shown in Figure 2, the balanced type optical elements sets 2 of preferred embodiment of the present invention comprises an optical element 21, a load-carrying unit 22 and a motor 23.
Optical element 21 can make the behavior generation wavefront of light change or path turnover or color selection or polarization state selection or the like, and optical element is a grating or a polygonal level crossing (polygon mirror) or a colour wheel (color wheel) or drum of the same colour (color drum) or a spectroscope or a color filter (filter) or a polaroid (polarizer) or a wave plate (retarder).
Wherein, polygonal level crossing is made up of a plurality of level crossing, and colour wheel is made up of a plurality of colored filter (not shown).At this, polygonal level crossing is sexangle, octagon, or even other looks polygonal the level crossing of process requirements.And look drum then can be transparent cylindricly, also can be the beam splitter with different colours.
Load-carrying unit 22 1 side bearing optical elements 21, and load-carrying unit 22 has a plurality of protuberances 221 as counterweight.Protuberance 221 is symmetrically distributed on the load-carrying unit 22, its material can be plastics or a metal, wherein, but the plastic material partly method of mat ejection formation forms, and metal material partly also can be shaped on the load-carrying unit 22 with mould with load-carrying unit 22, in addition, can certainly utilize the mode of bonding, protuberance 221 partly is bonding on the load-carrying unit 22.And protuberance 221 has the characteristic that easily divests, and carries out the operation that rotary balance is adjusted to make things convenient for personnel.
As shown in Figure 3, a plurality of protuberances 221 as counterweight partly are bonding on the outer peripheral edges of load-carrying unit 22, and protuberance 211 is not bonding on the load-carrying unit near the part in the load-carrying unit center of circle, and has the long length of side, conveniently to divest to carry out the adjustment of rotary balance.In addition, as shown in Figure 4, protuberance 221 also can extend around load-carrying unit 22.
Motor 23 its opposite sides with load-carrying unit 22 combine, and drive the optical element rotation.And the motor body that motor mainly is made up of a magnet circle, a siliconized plate, a coil, and axle center lid is formed.When coil electricity, siliconized plate produces magnetic force and magnetic field, and by the positive and negative and intensity of electrical current, allows magnetic field that orderly variation takes place, and also is a rotating magnetic field, makes magnet circle and rotating magnetic field effect, and then forms rotation.In addition, the axle center lid also can omit, and replaces with load-carrying unit 22, so load-carrying unit 23 more can have the function of axle center of motor lid concurrently, to strengthen the area that motor 23 bearings can drive, make motor 23 can utilize tiny bearing, can drive whole optical element 21 rotations.
In the present embodiment, balanced type optical elements sets 2 also comprise positioning piece 24, and motor body is fixed on the keeper 24.This keeper 24 utilizes the winding displacement 25 that links thereon, is connected with a driver, and this driver is in order to the CD-ROM drive motor body, and a bit (rotating shaft core) of establishing with keeper 24 and motor body axle is that rotate at the center.
Below please refer to another preferred embodiment that Fig. 5 to Fig. 7 illustrates optical elements sets of the present invention.
Please refer to Fig. 5, in the present embodiment, optical elements sets 3 comprises an optical element 31, a load-carrying unit 32, a motor 33 and a plurality of external member as counterweight (sheath) 34.
Optical element 31 and motor 33 have identical technical characterictic with aforesaid optical element 21 and motor 23, so repeat no more.
Load-carrying unit 32 1 side bearing optical elements 31, and load-carrying unit 32 has a plurality of protuberances 321 as counterweight.Protuberance 321 is evenly distributed on the load-carrying unit 32, and its material can be plastics or a metal, wherein, but the partly method formation of mat ejection formation of plastic material, and metal material partly also can be shaped on the load-carrying unit 32 with mould with load-carrying unit 32.And protuberance 321 has the characteristic that easily divests, and carries out the operation that rotary balance is adjusted to make things convenient for personnel.In the present embodiment, protuberance 321 extends on the periphery circle of load-carrying unit.
A plurality of external members 34 can be used as less counterweight, to carry out the rotary balance trimming movement of optical elements sets 3.And the material of external member 34 can be plastics or a metal, and its shape can be the upper shield with recess, makes external member 34 can be linked in (Fig. 6) on the protuberance 321.In addition, external member 34 also can be a C type ring, is sheathed on the protuberance 321 that front end expands.Desire on load-carrying unit 22 when adjusting rotary balance, when adding the weight in certain orientation, then, be sleeved on the protuberance 321, can increase the weight in this orientation upper shield or C type ring.And when desiring to alleviate the weight in certain orientation of load-carrying unit 22,, then remove external member 34 earlier if on the protuberance 321 external member 34 is arranged, to finely tune, when still needing further weight reduction, just protuberance 321 is divested.In addition, the external member 34 that is removed is reusable, to save Material Cost.
Please refer to Fig. 5 again, in the present embodiment, balanced type optical elements sets 3 also comprise positioning piece 35, and motor body is fixed on the keeper 35.This keeper 35 utilizes the winding displacement 36 that links thereon, is connected with a driver, and this driver is in order to the CD-ROM drive motor body, and a bit (rotating shaft core) of establishing with keeper 35 and motor body axle is that rotate at the center.
In sum, a kind of balanced type optical elements sets of the present invention especially has the balanced type optical elements sets of a plurality of protuberances as counterweight on load-carrying unit, and its utilization removes the protuberance that is preset on the load-carrying unit, adjusts the rotary balance of optical element.Compare with known techniques, the present invention is on load-carrying unit, be provided with the protuberance that conveniently removes as counterweight in advance, so when adjusting rotary balance, only need protuberance is directly divested, to alleviate the weight of load-carrying unit on this orientation, and then adjusted the center of gravity of whole optical elements sets, be a kind of quite easy mode, and more overthrown the mode of known techniques, adjust the rotary balance of optical elements sets with the interpolation counterweight.In addition, balanced type optical elements sets of the present invention has more an external member.This external member also can be used as counterweight and finely tunes, and is linked on the protuberance, to increase the weight of load-carrying unit.And when desiring to alleviate the weight of load-carrying unit, can remove the external member that is sleeved on the protuberance earlier, if still need further alleviate the weight in this orientation, just peel off protuberance, error in the time of not only can avoiding operating personnel to adjust rotary balance thus takes place, and has more increased the fine adjustment function of optical elements sets rotary balance.Moreover, by removing the center of rotation that protuberance comes the correcting optical element group, can solve the problem of optical element vibrations, and the generation that reduces noise, the fiduciary level when more increasing the optical element running.
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 contained in the appended claim its equivalent modifications of carrying out or change.
Claims (9)
1. balanced type optical elements sets comprises:
One optical element;
One load-carrying unit, the one side is carried this optical element, and this load-carrying unit has a plurality of protuberances as counterweight;
A plurality of external members, described external member are socketed on respectively on the described protuberance; And
One motor, it combines with the opposite side of this load-carrying unit, and drives this optical element rotation.
2. balanced type optical elements sets as claimed in claim 1 is characterized in that: this optical element changes the behavior generation wavefront of light or path turnover or color selection or polarization state selection.
3. balanced type optical elements sets as claimed in claim 2 is characterized in that: this optical element is a grating or a polygonal level crossing or a colour wheel or drum of the same colour or a spectroscope or a color filter or a polaroid or a wave plate.
4. balanced type optical elements sets as claimed in claim 1 is characterized in that: also comprise positioning piece, this motor body is fixed on this keeper.
5. balanced type optical elements sets as claimed in claim 1 is characterized in that: this protuberance is positioned on the periphery circle of this load-carrying unit.
6. balanced type optical elements sets as claimed in claim 1 is characterized in that: this protuberance extends around this load-carrying unit.
7. balanced type optical elements sets as claimed in claim 1 is characterized in that: the material of this protuberance or this external member is plastics or a metal.
8. balanced type optical elements sets as claimed in claim 1 is characterized in that: this protuberance has removable property.
9. balanced type optical elements sets as claimed in claim 1 is characterized in that: this external member is a upper shield or a C type ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410000166XA CN1303450C (en) | 2004-01-08 | 2004-01-08 | Balance type optical element assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410000166XA CN1303450C (en) | 2004-01-08 | 2004-01-08 | Balance type optical element assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1641401A CN1641401A (en) | 2005-07-20 |
| CN1303450C true CN1303450C (en) | 2007-03-07 |
Family
ID=34866655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410000166XA Expired - Fee Related CN1303450C (en) | 2004-01-08 | 2004-01-08 | Balance type optical element assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1303450C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5868482A (en) * | 1996-04-30 | 1999-02-09 | Balzers Aktiegesellschaft | Color wheel and picture generation unit with a color wheel |
| CN2497341Y (en) * | 2001-08-30 | 2002-06-26 | 中强光电股份有限公司 | Colour wheel having dynamic balance notch |
| CN2554663Y (en) * | 2002-07-09 | 2003-06-04 | 精碟科技股份有限公司 | Colour wheel and motor for colour wheel |
| CN2580482Y (en) * | 2002-10-15 | 2003-10-15 | 精碟科技股份有限公司 | Colour wheel and colour wheel cover sheet |
-
2004
- 2004-01-08 CN CNB200410000166XA patent/CN1303450C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5868482A (en) * | 1996-04-30 | 1999-02-09 | Balzers Aktiegesellschaft | Color wheel and picture generation unit with a color wheel |
| CN2497341Y (en) * | 2001-08-30 | 2002-06-26 | 中强光电股份有限公司 | Colour wheel having dynamic balance notch |
| CN2554663Y (en) * | 2002-07-09 | 2003-06-04 | 精碟科技股份有限公司 | Colour wheel and motor for colour wheel |
| CN2580482Y (en) * | 2002-10-15 | 2003-10-15 | 精碟科技股份有限公司 | Colour wheel and colour wheel cover sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1641401A (en) | 2005-07-20 |
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Granted publication date: 20070307 Termination date: 20100208 |