CN101271258B - Optical projection system and image smoothing apparatus thereof - Google Patents
Optical projection system and image smoothing apparatus thereof Download PDFInfo
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- CN101271258B CN101271258B CN2007100884089A CN200710088408A CN101271258B CN 101271258 B CN101271258 B CN 101271258B CN 2007100884089 A CN2007100884089 A CN 2007100884089A CN 200710088408 A CN200710088408 A CN 200710088408A CN 101271258 B CN101271258 B CN 101271258B
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- image smoothing
- load
- smoothing apparatus
- carrying unit
- flexible member
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Abstract
The invention discloses an image smoothing device which comprises an optical element, a bearing element, an elastic element, a baseplate, an actuating element and a temperature sensing element. The bearing element is used for bearing the optical element. At least one part of the bearing element is connected with the elastic element. The other part of the bearing element is suspended outside the elastic element. The baseplate supports the elastic element. The actuating element is connected with and drives the bearing element to vibrate. The temperature sensing element is electrically connected with the actuating element and senses an environmental temperature to output a sensed value to the actuating element.
Description
Technical field
The present invention relates to a kind of display system and image smoothing apparatus thereof, particularly relate to a kind of optical projection system and image smoothing apparatus thereof.
Background technology
In the existing technology in projection systems, digital light processor (Digital LightProcessing, DLP) optical projection system is owing to have high brightness, preferable color representation, reaction time and do not have advantage such as noise faster, and widely cinema, projector of office and home projection television adopt.
See also shown in Figure 1ly, a kind of DLP optical projection system 1 comprises a light source 11, a colour wheel 12, a lens subassembly 13, a digital micro-mirror device (DigitalMicro-mirror Device, DMD) 14 and one projection lens group 15; Wherein colour wheel 12 has a plurality of colored filters, such as but not limited to Red lightscreening plate, green color filter and blue color filter.DLP optical projection system 1 adopts digital control and utilizes the reflected light principle, after will gathering from the light beam of light source 11, after passing the colored filter optical filtering of colour wheel 12, focus on via lens subassembly 13 again and be projected on the digital micro-mirror device 14, the angle of inclination and the deflection period of a plurality of micro-reflectors 141 (as shown in Figure 2) by drive electrode control figure micro-mirror device 14, switch light beam and enter projection lens group 15, wherein existing projection lens group 15 is the turning type lens group, comprise a plurality of lens and a catoptron (figure does not show), catoptron makes light beam steering and changes light path, allows light beam amplify the back and to be projected to a display screen 16 imagings through these lens.
As Fig. 1 and shown in Figure 2, these micro-reflectors 141 of digital micro-mirror device 14 correspond respectively to each picture element unit (Pixel) of image, change between two different angles of inclination by these micro-reflectors 141 of selective control, light beam is switched in entering projection lens group 15 or not entering between projection lens group 15 these two states.
For keeping the mobility of these micro-reflectors 141, each 141 of these micro-reflector has minim gap, but at the amplification effect through projection lens group 15, relatively also the gap is amplified, thereby influences the level and smooth degree of image.
For solving this problem, DLP optical projection system 1 must be set up an image smoothing apparatus at light path, by the vibration of an optical element, the gap between these picture element unit is given obfuscation, to reach the level and smooth purpose of image.
Summary of the invention
Because above-mentioned problem, the object of the present invention is to provide a kind of optical projection system and image smoothing apparatus thereof, have feedback control concurrently and avoid selecting for use the cost due to the high-cooling property element to improve, reach microminiaturized and cost-effective effectiveness.
Edge is for reaching above-mentioned purpose, to comprise that according to a kind of image smoothing apparatus of the present invention an optical element, a load-carrying unit, a flexible member, a pedestal, activate an element and a temperature sensor.Load-carrying unit is in order to the bearing optical element, and at least a portion of load-carrying unit is connected in flexible member, and another part of load-carrying unit is suspended in outside the flexible member.Base supports flexible member, actuation element connect and the vibration of driving load-carrying unit.Temperature sensor is electrically connected with actuation element, and sensing one environment temperature is to export a sensing value to actuation element.
In order to achieve the above object, comprise a light source, an optic regulating assembly, a projection lens group and an image smoothing apparatus according to a kind of optical projection system of the present invention.Light source produces a light, optic regulating assembly modulation light.Light behind the projection lens group of received optic regulating assembly modulation, and be projected to a display screen to form an image.Image smoothing apparatus is positioned on the light path of light, and image smoothing apparatus comprises that an optical element, a load-carrying unit, a flexible member, a pedestal, activate an element and a temperature sensor.Load-carrying unit is in order to the bearing optical element, and at least a portion of load-carrying unit is connected in flexible member, and another part of load-carrying unit is suspended in outside the flexible member.Base supports flexible member, actuation element connect and the vibration of driving load-carrying unit.Temperature sensor is electrically connected with actuation element, and sensing one environment temperature to be exporting a sensing value to actuation element, and actuation element drives the load-carrying unit vibration according to sensing value.
From the above, a kind of optical projection system of the present invention and image smoothing apparatus thereof are by the setting of temperature sensor and control element, when environment temperature changes, temperature sensor produces different sensing value according to different environment temperatures, and feedback control makes control element control load-carrying unit according to sensing value with stable frequency vibration.Be compared to prior art, the volume of temperature sensor of the present invention is less, and each element of image smoothing apparatus do not need to select the heat radiation material for use, reaches microminiaturized and cost-effective effectiveness.
Description of drawings
Fig. 1 is a kind of synoptic diagram of existing DLP optical projection system;
Fig. 2 is a kind of synoptic diagram of existing digital micro-mirror device;
Fig. 3 is a kind of exploded view of image smoothing apparatus of preferred embodiment of the present invention;
Fig. 4 is the constitutional diagram of Fig. 3 book shop image smoothing apparatus;
Fig. 5 is the calcspar of the image smoothing apparatus of preferred embodiment of the present invention, the annexation of displays temperature sensing element, control element, actuation element and load-carrying unit;
Fig. 6 is a kind of synoptic diagram of image smoothing apparatus of another preferred embodiment of the present invention; And
Fig. 7 is a kind of synoptic diagram of a kind of optical projection system of preferred embodiment of the present invention.
The component symbol explanation:
2 DLP optical projection systems
4 optical projection systems
11,41 light sources
421 colour wheels
14,422 digital micro-mirror devices
15,43 projection lens groups
16,44 display screens
13 lens subassemblies
42 optic regulating assemblies
141 micro-reflectors
403 flexible members
404 pedestals
406 temperature sensors
407 first support members
408 control elements
409 fulcrum assemblies
410 second support members
431 barrels
4021 web members
4022 through holes
4031 cantilevers
4051 coils
4,052 first magnetic elements
4,091 second magnetic elements
4092 soft magnetic components
40,50 image smoothing apparatus
401 optical elements
402 load-carrying units
405 actuation elements
Embodiment
Hereinafter with reference to correlative type, a kind of optical projection system and image smoothing apparatus thereof according to preferred embodiment of the present invention are described, wherein components identical will be illustrated with identical reference marks.
See also shown in Figure 3ly, a kind of image smoothing apparatus 40 of preferred embodiment of the present invention comprises that an optical element 401, a load-carrying unit 402, a flexible member 403, a pedestal 404, activate an element 405 and a temperature sensor 406.
In the present embodiment, optical element 401 can be lens or a catoptron.
Load-carrying unit 402 is in order to bearing optical element 401, and load-carrying unit 402 has two web members 4021 and a through hole 4022.Flexible member 403 can be a shell fragment and has two cantilevers 4031.
See also shown in Figure 4, after image smoothing apparatus 40 assemblings, at least a portion of load-carrying unit 402 is connected in flexible member 403, and another part of load-carrying unit 402 is suspended in outside the flexible member 403, and load-carrying unit 402 is to be connected to these cantilevers 4031 with these web members 4021.Because second magnetic element 4091 of fulcrum assembly 409 produces an interattraction power with soft magnetic components 4092, makes that the free end of load-carrying unit 402 is a fulcrum with fulcrum assembly 409, and with an amplitude fluctuation.So, can change the Oscillation Amplitude of load-carrying unit 402 by the position of adjusting fulcrum assembly 409, and can compensate the assembling tolerance of image smoothing apparatus 40.
See also shown in Figure 5ly, image smoothing apparatus 40 more comprises a control element 408, is electrically connected with actuation element 405 and temperature sensor 406 respectively, and control element 408 drives load-carrying units 402 vibrations according to sensing value with control actuation element 405.In the present embodiment, control element 408 can be a microprocessor or a chip, and control element 408 is controlled the coil 4051 that outputs current to actuation element 405 according to sensing value.
Details are as follows for the start process of image smoothing apparatus 40 under the varying environment temperature.
When environment temperature was T, temperature sensor 406 produced one first sensing value, and control element 408 is exported the coil 4051 of one first electric current to actuation element 405 according to first sensing value.At this moment, the coil 4051 and first magnetic element 4052 produce a action of a magnetic field, can change first direction of current or switch first electric current by control element 408, vibrate with a first frequency and make actuation element 405 drive load-carrying unit 402.
When environment temperature was changed into T ' (T ' can be higher or lower than T), the resistance value of the coil 4051 of actuation element 405 changed thereupon.At this moment, temperature sensor 406 produces one second sensing value, control element 408 is exported the coil 4051 of one second electric current to actuation element 405 according to second sensing value, and second electric current cooperates the resistance value of coil 4051, make actuation element 405 still can keep and activate load-carrying unit 402, reach the purpose of feedback control with first frequency.
See also shown in Figure 6, a kind of image smoothing apparatus 50 according to another preferred embodiment of the present invention is with the foregoing description difference: pedestal 404 is except being provided with of first support member 407, at least one second support member 410 more can be set, in order to support elastic element 403, and first support member 407 and second support member 410 are positioned at the opposite side of web member 4021.When these cantilevers 4031 of these web member 4021 compacting flexible members 403, by the deformation and the restoring force of these cantilevers 4031, so that load-carrying unit 402 is with a frequency vibration.
See also shown in Figure 7ly, comprise a light source 41, an optic regulating assembly 42, a projection lens group 43 and an image smoothing apparatus 40 according to a kind of optical projection system 4 of preferred embodiment of the present invention.Though it is the example explanation that present embodiment has image smoothing apparatus 40 with optical projection system 4, not as limit.Certainly, image smoothing apparatus 50 also can be applicable to optical projection system 4.
One light of optic regulating assembly 42 modulation light sources 41 emissions, and optic regulating assembly 42 has a colour wheel 421 and a digital micro-mirror device 422.Wherein this colour wheel 421 is in order to filter the light from light source 41 emissions, and 422 of digital micro-mirror devices are the light that receives by colour wheel 421, and the light path of control modulation light.Projection lens group 43 receives the light behind optic regulating assembly 42 modulations, and amplification is projected to a display screen 44 to form an image.
40 of image smoothing apparatus are positioned on the light path of light, so that the purpose of level and smooth image to be provided.In the present embodiment, image smoothing apparatus 40 can be adjacent to projection lens group 43; Certainly, image smoothing apparatus 40 also can be connected with a barrel 431 of projection lens group 43.Because, the architectural feature of image smoothing apparatus 40, make flowing mode and function similar elements as above is described, so repeat no more.
In sum, a kind of optical projection system of the present invention and image smoothing apparatus thereof are by the setting of temperature sensor and control element, when environment temperature changes, temperature sensor produces different sensing value according to different environment temperatures, and feedback control makes control element control load-carrying unit according to sensing value with stable frequency vibration.Be compared to prior art, the volume of temperature sensor of the present invention is less, and each element of image smoothing apparatus do not need to select the heat radiation material for use, reaches microminiaturized and cost-effective effectiveness.
The above only is an illustrative, but not is restricted person.Any spirit and category that does not break away from the present invention, and to its equivalent modifications of carrying out or change, all should be contained in the appended claim.
Claims (16)
1. image smoothing apparatus comprises:
One optical element;
One load-carrying unit is in order to carry this optical element;
One flexible member, at least a portion of this load-carrying unit is connected in this flexible member, and another part of this load-carrying unit is suspended in outside this flexible member;
One pedestal supports this flexible member;
One activates element, connects and drive this load-carrying unit to vibrate; And
One temperature sensor electrically connect with this actuation element, and sensing one environment temperature is to export a sensing value to this actuation element.
2. image smoothing apparatus as claimed in claim 1, wherein this temperature sensor is a thermistor.
3. image smoothing apparatus as claimed in claim 1, wherein this sensing value is a resistance value.
4. image smoothing apparatus as claimed in claim 1, it more comprises:
One control element is electrically connected with this actuation element and this temperature sensor respectively, and this control element drives this load-carrying unit vibration according to this sensing value to control this actuation element.
5. image smoothing apparatus as claimed in claim 4, wherein this control element is a microprocessor.
6. image smoothing apparatus as claimed in claim 1, wherein this flexible member is one to have the shell fragment of two cantilevers, two cantilevers of this shell fragment are to be provided with at interval and to extending with side direction, the relative side of this load-carrying unit extends respectively a connection piece is set, and these web members are connected in the shell fragment of these cantilevers.7. image smoothing apparatus as claimed in claim 6, wherein this pedestal is provided with at least one first support member, to support this flexible member.
8. image smoothing apparatus as claimed in claim 7, wherein this pedestal is provided with at least one second support member, supporting this flexible member, and this first support member and this second support member are positioned at the relative side of this web member along the cantilevered orientation of the shell fragment of this flexible member.
9. image smoothing apparatus as claimed in claim 1, wherein this load-carrying unit extension is provided with an actuator arm, to link this actuation element.
10. image smoothing apparatus as claimed in claim 9, wherein this actuation element comprises at least one coil and at least one first magnetic element, this first magnetic element is arranged on this pedestal, and this coil is to being set around in the through hole of this actuator arm by first magnetic element.
11. image smoothing apparatus as claimed in claim 10, wherein this first magnetic element is a permanent magnet or magnetite.
12. image smoothing apparatus as claimed in claim 1, it more comprises:
At least one fulcrum assembly is arranged between this load-carrying unit and this pedestal.
13. image smoothing apparatus as claimed in claim 12, wherein this fulcrum assembly comprises one second magnetic element and a soft magnetic components, and this second magnetic element is arranged on this load-carrying unit, and this soft magnetic components is to should second magnetic element and be arranged on this pedestal.
14. image smoothing apparatus as claimed in claim 13, wherein this second magnetic element is a permanent magnet or magnetite.
15. image smoothing apparatus as claimed in claim 13, wherein the material of this soft magnetic components is a metal.
16. image smoothing apparatus as claimed in claim 1, wherein this optical element is lens or a catoptron.
17. an optical projection system comprises:
One light source produces a light;
One optic regulating assembly, this light of modulation;
One projection lens group receives this light behind this optic regulating assembly modulation, and is projected to a display screen to form an image; And
One image smoothing apparatus, be positioned on the light path of this light, this image smoothing apparatus comprises an optical element, one load-carrying unit, one flexible member, one pedestal, one activates an element and a temperature sensor, this load-carrying unit is in order to carry this optical element, at least a portion of this load-carrying unit is connected in this flexible member, another part of this load-carrying unit is suspended in outside this flexible member, this flexible member of this base supports, this actuation element binding also drives this load-carrying unit vibration, this temperature sensor is electrically connected with this actuation element, and sensing one environment temperature to be exporting a sensing value to this actuation element, and this actuation element drives this load-carrying unit vibration according to this sensing value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100884089A CN101271258B (en) | 2007-03-22 | 2007-03-22 | Optical projection system and image smoothing apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100884089A CN101271258B (en) | 2007-03-22 | 2007-03-22 | Optical projection system and image smoothing apparatus thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101271258A CN101271258A (en) | 2008-09-24 |
| CN101271258B true CN101271258B (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100884089A Expired - Fee Related CN101271258B (en) | 2007-03-22 | 2007-03-22 | Optical projection system and image smoothing apparatus thereof |
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| CN (1) | CN101271258B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031402B (en) * | 2021-03-11 | 2022-08-26 | 安徽工程大学 | Preparation method of smooth micro-lens structure surface |
| CN113031403B (en) * | 2021-03-11 | 2022-08-02 | 安徽工程大学 | Preparation system for surface of smooth micro-lens structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6198565B1 (en) * | 1998-11-16 | 2001-03-06 | Victor Company Of Japan, Limited | Light deflection element and display apparatus using same |
| WO2005057917A1 (en) * | 2003-12-11 | 2005-06-23 | Lg Electronics, Inc. | Actuator for improvement of resolution |
| WO2005057916A1 (en) * | 2003-12-11 | 2005-06-23 | Lg Electronics, Inc. | Display device and display method |
| WO2005120057A1 (en) * | 2004-06-01 | 2005-12-15 | Lg Electronics, Inc. | Display device |
-
2007
- 2007-03-22 CN CN2007100884089A patent/CN101271258B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6198565B1 (en) * | 1998-11-16 | 2001-03-06 | Victor Company Of Japan, Limited | Light deflection element and display apparatus using same |
| WO2005057917A1 (en) * | 2003-12-11 | 2005-06-23 | Lg Electronics, Inc. | Actuator for improvement of resolution |
| WO2005057916A1 (en) * | 2003-12-11 | 2005-06-23 | Lg Electronics, Inc. | Display device and display method |
| WO2005120057A1 (en) * | 2004-06-01 | 2005-12-15 | Lg Electronics, Inc. | Display device |
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| Publication number | Publication date |
|---|---|
| CN101271258A (en) | 2008-09-24 |
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Granted publication date: 20100616 Termination date: 20110322 |