CN101446686B - Light emission system - Google Patents
Light emission system Download PDFInfo
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- CN101446686B CN101446686B CN2007101970289A CN200710197028A CN101446686B CN 101446686 B CN101446686 B CN 101446686B CN 2007101970289 A CN2007101970289 A CN 2007101970289A CN 200710197028 A CN200710197028 A CN 200710197028A CN 101446686 B CN101446686 B CN 101446686B
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- light beam
- light
- compound lens
- emission system
- light emission
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Abstract
The invention relates a light emission system which comprises a light beam generator, a compound lens and a driving element. The light beam generator is used for generating a light beam along the direction of an optic axis. The compound lens is arranged on a light path of the light beam and comprises multiple microstructures which can lead the light beam to be refracted. The driving element comprises a driving piece which is coupled with the compound lens and is used for driving the compound lens to make reciprocating motion along the direction of an axial line being interlaced with the optic axis with the driving frequency. As the compound lens is arranged, the energy distribution of the light beam can be ensured to be even; furthermore, the driving element can be utilized to lead a light spot formed by the light beam to make reciprocating motion within the fixed scope, thereby causing human eyes to generate retentivity of vision and be not capable of perceiving the existence of the light spot.
Description
Technical field
The present invention relates to light emission system, particularly a kind of light emission system that can make the emitted energy homogenising.
Background technology
The general using bulb is the white light beam lead-in light administration module that bulb is produced as the image-forming principle of the single-gun-type projector of light source, and after by the light regime module white light beam being carried out beam split and closed the relevant action of light, will contain the coloured light projection output of image signal again via projection lens.
Because traditional homogeneous beam, particularly laser beam has been had polarization, characteristic such as collimated light and single frequency spectrum, therefore, when becoming the light source of projector with laser beam replacement bulb, can reduce the member of light regime module, and then the size of reduced projection machine, this also makes laser beam become the developing goal for light source of projector, but because the laser beam projection is when shadow surface (for example screen), can present problems such as energy inequality and hot spot, it is bad to cause projection to produce picture in the image of shadow surface, therefore, how to eliminate laser beam and still remains research and development in problems such as the energy inequality of shadow surface and hot spots.
Summary of the invention
Therefore, purpose of the present invention is promptly avoided in shadow surface produce power inequality providing a kind of, and can make human eye can't discover the light emission system of the made emitted energy homogenising that hot spot exists.
According to an aspect of the present invention, provide a kind of light emission system, comprise:
Light beam generator is in order to produce the light beam of advancing along optical axis direction;
Compound lens is arranged on the light path of described light beam, and comprises a plurality of microstructures that make described beam divergence; And
Driver element comprises and the actuator of described compound lens coupling that described actuator orders about described compound lens according to predetermined driving frequency and moves with respect to described light beam generator; And
Light pipe, in order to accepting the described light beam by the scattering of described compound lens institute, and the high reflecting surface that utilizes its inside conducts to light-emitting window with the light beam of direct projection, scattering and refraction by light inlet.
In light emission system of the present invention, described driving frequency is a travel frequency, and described actuator is to order about described compound lens along moving back and forth with the staggered axis direction of described optical axis according to described travel frequency, and described travel frequency is more than or equal to 24 times/second.
In light emission system of the present invention, described driving frequency is a rotational frequency, and described actuator is to order about described compound lens according to described rotational frequency to rotate with respect to described light beam generator.
In light emission system of the present invention, described driver element also comprise the supporting seat, for described actuator setting be subjected to described actuator driven in rotation cam member, along with the staggered axis of described optical axis can reciprocatingly be arranged at described supporting seat framework, be connected in described framework and with the described cam member driven member of contact mutually, and being arranged at Slide Group zoarium between described framework and described supporting seat, described framework is for described compound lens setting.
In light emission system of the present invention, described lenticular microstructure is arranged.
In light emission system of the present invention, described Slide Group zoarium has the guide rail that is arranged at described supporting seat along described axis direction, and is fixedly arranged on described framework and is sheathed on the sliding sleeve of described guide rail.
In light emission system of the present invention, also comprise the pedestal that is used to support described light beam generator, described driver element more comprises the supporting seat that is used to support described actuator.
In light emission system of the present invention, described microstructure is a lenticule.
In light emission system of the present invention, described light beam generator is laser generator or light emitting diode.
Implement light emission system of the present invention, the energy distribution of described light beam is able to evenly, and utilize described driver element that the formed hot spot of described light beam is moved back and forth in fixed interval, can make human eye produce persistence of vision and can't discover the existence of hot spot, thereby improve the image quality that projection produced.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a stereographic map, and the composition of first preferred embodiment of the present invention is described;
Fig. 2 is a schematic side view, and actuator, the cam member of driver element is described, and the position of driven member relation;
Fig. 3 is a schematic side view, illustrates that the refraction of optical beam crosses described compound lens and shine situation when screen;
Fig. 4 is a schematic side view, illustrates that hot spot that wherein one light of described light beam forms is in the mobile situation of described screen;
Fig. 5 is a stereographic map, and the composition of second preferred embodiment of the present invention is described;
Fig. 6 is a schematic side view, illustrates that hot spot that wherein one light of light beam forms is in the mobile situation of described screen;
Fig. 7 is a stereographic map, and the composition of the 3rd preferred embodiment of the present invention is described; And
Fig. 8 is a stereographic map, and the composition of the 4th preferred embodiment of the present invention is described.
Below be the part description of reference numerals: 361 guide rails
1 light beam generator, 362 sliding sleeves
2 compound lenses, 4 pedestals
21 microstructures, 5 light beams
3 driver elements, 51 light
6 screens
31 supporting seats, 7 light pipes
32 actuators, 71 light inlets
33 cam members, 72 light-emitting windows
34 framework S hot spots
35 driven member L axis
The fit X-ray axle of 36 Slide Groups
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present invention, in the following detailed description that cooperates with reference to four graphic preferred embodiments, can clearly present.
Before the present invention is described in detail, be noted that in the following description content similarly assembly is to represent with identical numbering.
Consult Fig. 1,2,3, first preferred embodiment of the present invention comprises light beam generator 1, compound lens 2, driver element 3, and pedestal 4.
Described light beam generator 1 is in order to produce a light beam 5 of advancing along an optical axis directions X.What deserves to be explained is that described light beam generator 1 can be laser generator or light emitting diode (LED), and described light beam 5 can also be laser beam or homogeneous beam.
Described compound lens 2 is to be arranged on the light path of described light beam 5 in the face of described light beam generator 1, and comprise a plurality of microstructures 21 that make described light beam 5 scatterings, wherein, described these microstructures 21 are to be evenly distributed, what deserves to be explained is, these microstructures 21 can be lenticule or microprism, and in the present embodiment, described these microstructures 21 are for lenticule and be arranged.Though compound lens described in the present embodiment 2 is in the face of described light beam generator 1 is provided with, also can with the setting that meets at right angles of described light beam generator 1, by scattering of light described light beam 5 is guided to described compound lens 2 again.
Described driver element 3 comprises supporting seat 31, be arranged at the actuator 32 of described supporting seat 31, be subjected to described actuator 32 driven in rotation cam member 33, along and the staggered axis L of described optical axis X can reciprocatingly be arranged at framework 34 on the described supporting seat 31, be connected in described framework 34 and with described cam member 33 driven member 35 of contact mutually, and be arranged at Slide Group zoarium 36 between described framework 34 and the described supporting seat 31.Described Slide Group zoarium 36 has along described axis L direction and is arranged at the guide rail 361 of described supporting seat 31, and is fixedly arranged on described framework 34 and is sheathed on the sliding sleeve 362 of described guide rail 361, and described framework 34 is used to settle compound lens 2.By above-mentioned connection relationship, described actuator 32 is to couple with described compound lens 2, and drive described compound lens 2 with predefined travel frequency along the to-and-fro movement of described axis L direction.In the present embodiment, described actuator 32 is a motor, and in order to reach the purpose that allows naked eyes produce persistence of vision and can't discover the existence of hot spot S, described travel frequency is more than or equal to 24 times/second.
What deserves to be explained is that the reciprocating direction of compound lens is not limited to moving up and down among the embodiment shown in Fig. 1-4, also can be designed to side-to-side movement.In this case, the concrete structure of driver element will be different with first preferred embodiment, know as is known to the person skilled in the art, and it can adopt the customary means in the mechanical drive to realize.
Described pedestal 4 is to be provided with for supporting described light beam generator 1.
Cooperate and consult Fig. 4, when described light beam 5 shines in screen 6 by described these microstructure 21 scatterings, because the short focus characteristic of described these microstructures 21, the energy distribution that makes described light beam 5 reflect described microstructure 21 is able to homogenising, simultaneously, the actuator 32 of described driver element 3 is by the transmission of described cam member 33 with described driven member 35, described compound lens 2 is moved back and forth along described axis L direction with described travel frequency, so, when wherein one light 51 of described light beam 5 reflected wherein microstructure 21 and when shining in described screen 6, the hot spot S that is formed by described light 51 is also with moving back and forth with described travel frequency in described microstructure 21 interval along described axis L direction in described screen 6.
Via above explanation, advantage of the present invention can be summarized as follows:
One, by the setting of described compound lens 2, the energy distribution that can make described light beam 5 reflect described these microstructures 21 is able to homogenising.
Two, because described hot spot S moves back and forth along described axis L direction with described travel frequency, so,, can can't discover the existence of described hot spot S in described interval because of persistence of vision when eye-observation was shone in the light time of described screen 6.
Consult Fig. 5,6, second preferred embodiment of the present invention is roughly identical with above-mentioned first preferred embodiment, its difference only is the shape of described compound lens 2 and the composition difference of described driver element 3, described driver element 3 comprises supporting seat 31, and the actuator 32 that is arranged at described supporting seat 31 and is coupled with described compound lens 2, described actuator 32 is to drive described compound lens 2 with respect to described light beam generator 1 rotation with predetermined rotational frequency.In the present embodiment, described actuator 32 is a motor, and the diameter in described these microstructures 21 is under the prerequisite of 0.5mm, it is 5000rpm that real work is gone up preferable described rotational frequency, but in order to limit the present invention, the purpose that exists that can't discover hot spot S can allow naked eyes produce persistence of vision not is a prerequisite.
After described light beam 5 is by these microstructure 21 scatterings, because the short focus characteristic of described these microstructures 21, the energy distribution that makes described light beam 5 reflect described these microstructures 21 is able to homogenising, simultaneously, actuator 32 by described driver element 3 drives described compound lens 2 with respect to described light beam generator 1 rotation with described rotational frequency, so, when wherein one light 51 of described light beam 5 shines in screen 6 by microstructure 21 scatterings wherein, formed hot spot S will move with described rotational frequency in described screen 6 interval with described microstructure 21.
Because more described first preferred embodiment of part count of the driver element 3 of above-mentioned second preferred embodiment is few, therefore, except reaching the effect identical, also can reduce the parts and the assembly cost of described light emission system with described first preferred embodiment.
Consult Fig. 3,4,7, the 3rd preferred embodiment of the present invention is roughly identical with above-mentioned first preferred embodiment, its difference only is that described the 3rd preferred embodiment also comprises the light pipe 7 that is oppositely arranged with described compound lens 2, when described light beam 5 reflected described compound lens 2, except direct light, also follow after the scattering with refraction after light beam, make the light path of described light beam 5 change and produce a plurality of new pointolites, be sent to described light pipe 7.At last, utilize the light beam 5 of the high reflecting surface of described light pipe 7 inside, conduct to light-emitting window 72 by light inlet 71 with direct projection, scattering and refraction.
Consult Fig. 6,8, the 4th preferred embodiment of the present invention is roughly identical with above-mentioned second preferred embodiment, and its difference only is that described the 4th preferred embodiment also comprises the light pipe 7 that is oppositely arranged with described compound lens 2.After described light beam 5 reflected described these microstructures 21, because the short focus characteristic and the dispersion effect of these microstructures 21, make described light beam 5 reflected described these microstructures 21 after light path change, and produce a plurality of new pointolites with setting each other off, so, to make luminous energy be evenly distributed and reach the purpose that luminance brightness is able to homogenising, last, utilize the described light beam 5 of described light pipe 7 conduction to merge output again.
Conclude above-mentioned, the present invention is by the setting of described compound lens 2, the energy distribution of described light beam 5 is able to evenly, and utilize described driver element 3 to make described hot spot S in the interval, move back and forth or rotate and make human eye produce persistence of vision and can't discover the existence of described hot spot S, so can reach the purpose of invention really.
The above only is preferred embodiment of the present invention, and when not limiting scope of the invention process with this, promptly the simple equivalent of being done according to claim of the present invention and invention description content generally changes and modifies, and all still belongs in the scope that patent of the present invention contains.
Claims (9)
1. a light emission system is characterized in that, comprises:
Light beam generator is in order to produce the light beam of advancing along optical axis direction;
Compound lens is arranged on the light path of described light beam, and comprises a plurality of microstructures that make described beam divergence;
Driver element comprises and the actuator of described compound lens coupling that described actuator orders about described compound lens according to predetermined driving frequency and moves with respect to described light beam generator; And
Light pipe, in order to accepting the described light beam by the scattering of described compound lens institute, and the high reflecting surface that utilizes its inside conducts to light-emitting window with the light beam of direct projection, scattering and refraction by light inlet.
2. according to the described light emission system of claim 1, it is characterized in that, described driving frequency is a travel frequency, and described actuator is to order about described compound lens along moving back and forth with the staggered axis direction of described optical axis according to described travel frequency, and described travel frequency is more than or equal to 24 times/second.
3. according to the described light emission system of claim 1, it is characterized in that described driving frequency is a rotational frequency, described actuator is to order about described compound lens according to described rotational frequency to rotate with respect to described light beam generator.
4. according to the described light emission system of claim 2, it is characterized in that, described driver element also comprise the supporting seat, for described actuator setting be subjected to described actuator driven in rotation cam member, along with the staggered axis of described optical axis can reciprocatingly be arranged at described supporting seat framework, be connected in described framework and with the described cam member driven member of contact mutually, and being arranged at Slide Group zoarium between described framework and described supporting seat, described framework is for described compound lens setting.
5. according to the described light emission system of claim 2, it is characterized in that the microstructure of described compound lens is arranged.
6. according to the described light emission system of claim 4, it is characterized in that described Slide Group zoarium has the guide rail that is arranged at described supporting seat along described axis direction, and be fixedly arranged on described framework and be sheathed on the sliding sleeve of described guide rail.
7. according to the described light emission system of claim 3, it is characterized in that also comprise the pedestal that is used to support described light beam generator, described driver element more comprises the supporting seat that is used to support described actuator.
8. according to each described light emission system in the claim 1 to 7, it is characterized in that described microstructure is a lenticule.
9. according to each described light emission system in the claim 1 to 7, it is characterized in that described light beam generator is laser generator or light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101970289A CN101446686B (en) | 2007-11-26 | 2007-11-26 | Light emission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101970289A CN101446686B (en) | 2007-11-26 | 2007-11-26 | Light emission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101446686A CN101446686A (en) | 2009-06-03 |
| CN101446686B true CN101446686B (en) | 2011-01-12 |
Family
ID=40742442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101970289A Expired - Fee Related CN101446686B (en) | 2007-11-26 | 2007-11-26 | Light emission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101446686B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6552760B1 (en) * | 1999-02-18 | 2003-04-22 | Fujitsu Limited | Luminaire with improved light utilization efficiency |
| US6909553B2 (en) * | 2001-08-03 | 2005-06-21 | Mems Optical, Inc. | Multi-aperture beam integrator/method producing a continuously variable complex image |
| EP1852724A2 (en) * | 2006-05-05 | 2007-11-07 | VisiTech International Ltd. | Laser confocal scanning microscope and methods of improving image quality in such microscope |
-
2007
- 2007-11-26 CN CN2007101970289A patent/CN101446686B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6552760B1 (en) * | 1999-02-18 | 2003-04-22 | Fujitsu Limited | Luminaire with improved light utilization efficiency |
| US6909553B2 (en) * | 2001-08-03 | 2005-06-21 | Mems Optical, Inc. | Multi-aperture beam integrator/method producing a continuously variable complex image |
| EP1852724A2 (en) * | 2006-05-05 | 2007-11-07 | VisiTech International Ltd. | Laser confocal scanning microscope and methods of improving image quality in such microscope |
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| Publication number | Publication date |
|---|---|
| CN101446686A (en) | 2009-06-03 |
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Granted publication date: 20110112 Termination date: 20151126 |