CN104930463A - Wavelength conversion device and light emitting device - Google Patents
Wavelength conversion device and light emitting device Download PDFInfo
- Publication number
- CN104930463A CN104930463A CN201510230565.3A CN201510230565A CN104930463A CN 104930463 A CN104930463 A CN 104930463A CN 201510230565 A CN201510230565 A CN 201510230565A CN 104930463 A CN104930463 A CN 104930463A
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- Prior art keywords
- wavelength
- signal
- wavelength conversion
- light
- rotating disk
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
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- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optical Transform (AREA)
Abstract
The invention provides a wavelength conversion device and a light emitting device. The wavelength conversion device is used for receiving and emitting exciting light and comprises a wavelength conversion rotary disc and a motor, and the wavelength conversion rotary disc is driven by the motor to rotate. The wavelength conversion rotary disc comprises at least two zones arranged in the circumferential direction, namely, a wavelength conversion zone and a transmission zone. The wavelength conversion zone comprises a reflection substrate and a wavelength conversion layer attached to the surface of at least part of the reflection substrate. A signal transmitter and a signal receiver on the same side with the wavelength conversion rotary disc are further included. Along with rotation of the wavelength conversion rotary disc, the wavelength conversion zone and the transmission zone sequentially and periodically pass through the action range of the signal transmitter and the signal receiver. Synchronizing signals generated on the signal transmitter are achieved through reflection of the wavelength conversion zone on the wavelength conversion rotary disc to the signals and transmission or absorption of the transmission zone to the signals. The errors generated by pasting errors of black adhesive tape in a traditional method do not exist in the signals, and the unstability phenomenon does not exist after long-time work in high-temperature environment.
Description
Technical field
The present invention relates to light sources technical field, particularly relate to the light-emitting device of Wavelength converter and use Wavelength converter.
Background technology
In projector, colour wheel generally uses, and its structure as shown in Figure 1.In the application, a branch of white light is on colour wheel disc 101, and colour wheel is driven uniform rotation by motor 102, and utilizes the segmentation optical filter on its disc that white light timesharing is filtered into each monochromatic light.Motor 102 pastes the adhesive tape 103 of a slice black, an infrared launcher 110 and an infrared receiving device 111 are placed in motor side.When black tape 103 is not positioned at the sphere of action of infrared launcher and infrared receiving device, the infrared ray 120 that infrared launcher 110 is launched is understood by motor table surface launching thus is received by infrared receiving device 111, and when black tape 103 is positioned at the sphere of action of infrared launcher and infrared receiving device, the infrared ray that infrared launcher 110 is launched can be absorbed by black tape 103, and now infrared receiving device just can not receive infrared signal.Like this along with the rotation of motor 102, infrared receiving device just can export the synchronizing signal of revolution, and this signal is for the Synchronization Control of the light valve that projects.
But this method Shortcomings.Be attached to the black tape location error when subsides on motor, on the other hand because temperature near motor is higher, rotating ratio very fast, black tape long-term work easily comes off thus causes whole system unstable.
Summary of the invention
In order to solve the problem, the present invention proposes a kind of Wavelength converter, and for receiving exciting light and launching Stimulated Light, comprise wavelength convert rotating disk and motor, wavelength convert rotating disk is driven by a motor rotation; Wherein, wavelength convert rotating disk comprises at least two districts along the circumferential direction arranged, wavelength-converting region and transmission area, and wherein wavelength-converting region comprises reflection substrate and is attached to reflection substrate wavelength conversion layer surperficial at least partly.Also comprise the signal projector and signal receiver that are positioned at wavelength convert rotating disk homonymy, along with the rotation of wavelength convert rotating disk, wavelength-converting region and transmission area be the periodic sphere of action through signal projector and signal receiver successively; When wavelength-converting region is through the sphere of action of signal projector and signal receiver, the signal that signal projector is launched is incident in wavelength-converting region and can is reflected by major part and be received by signal receiver, when transmission area is through the sphere of action of signal projector and signal receiver, the signal that signal projector is launched be incident in transmission area can major part through transmission area or be transmitted district and absorb.
The present invention also proposes a kind of light-emitting device, comprise excitaton source and above-mentioned Wavelength converter, the exciting light that wherein excitaton source is launched is incident in Wavelength converter, along with the rotation of wavelength convert rotating disk, the wavelength-converting region on wavelength convert rotating disk and transmission area are periodically positioned in the light path of exciting light successively; When in the light path that wavelength-converting region is positioned at exciting light, the wavelength conversion layer stimulated emission Stimulated Light on wavelength-converting region, this Stimulated Light by the reflection of the reflection substrate of wavelength-converting region along the opposite direction outgoing of exciting light input path; When in the light path that transmission area is positioned at exciting light, exciting light through transmission area along the outgoing of former direction.
To utilize on wavelength convert rotating disk wavelength-converting region to the reflection of signal and transmission area to the transmission of signal or absorption, achieve the synchronizing signal that signal receiver produces.This signal does not deposit the error produced due to black tape stickup error in conventional methods where, and long-term work does not exist unstable phenomenon yet in high temperature environments.
Accompanying drawing explanation
Fig. 1 illustrates the structural representation of current colour wheel synchronization scenario;
Fig. 2 A is the structural representation of an embodiment of light-emitting device in the present invention;
Fig. 2 B is the front view of Fig. 2 A embodiment medium wavelength conversion rotating disk;
Fig. 3 is the front view of another embodiment medium wavelength conversion rotating disk;
Fig. 4 is the structural representation of another embodiment medium wavelength conversion equipment;
Fig. 5 A is the structural representation of another embodiment medium wavelength conversion equipment;
Fig. 5 B is the view that Fig. 5 A embodiment medium wavelength conversion rotating disk looks over from fins group side.
Detailed description of the invention
The present invention proposes the light-emitting device of a kind of Wavelength converter and this Wavelength converter of application.Fig. 2 A illustrates the structural representation of an embodiment of light-emitting device.This light-emitting device comprises Wavelength converter, and this Wavelength converter is for receiving exciting light 230 and launching Stimulated Light 232.This Wavelength converter comprises wavelength convert rotating disk 201 and motor 202, and wavelength convert rotating disk 201 is driven rotation by motor 202.Fig. 2 B represents the front view of wavelength convert rotating disk 201, as shown in the figure, wavelength convert rotating disk 201 comprises at least two districts along the circumferential direction arranged, wavelength-converting region 201a and transmission area 201b, wherein wavelength-converting region 201a comprises reflection substrate and is attached to the wavelength conversion layer on reflection substrate surface.This Wavelength converter also comprises the signal projector 210 and signal receiver 211 that are positioned at wavelength convert rotating disk 201 homonymy, along with the rotation of wavelength convert rotating disk 201, wavelength-converting region 201a and transmission area 201b is the periodic sphere of action through signal projector 210 and signal receiver 211 successively.When wavelength-converting region 201a is through the sphere of action of signal projector and signal receiver, the signal 220 that signal projector 210 is launched is incident in wavelength-converting region and can is reflected by major part and be received by signal receiver 211, when transmission area 201b is through the sphere of action of signal projector and signal receiver, the signal that signal projector 210 is launched be incident in transmission area 201b can major part through transmission area or be transmitted district and absorb.Signal receiver 211 can export different level according to the intensity receiving signal, and therefore along with the rotation of wavelength convert rotating disk, signal receiver can produce the level signal of same frequency, and this signal just can as the synchronizing signal of this wavelength convert rotating disk.
Light-emitting device shown in Fig. 2 A also comprises excitaton source (not shown in FIG.), the exciting light 230 that excitaton source is launched is incident in Wavelength converter, along with the rotation of wavelength convert rotating disk 201, the wavelength-converting region 201a on wavelength convert rotating disk and transmission area 201b is periodically positioned in the light path of exciting light 230 successively.When in the light path that wavelength-converting region 201a is positioned at exciting light 230, the wavelength conversion layer stimulated emission Stimulated Light 232 on the 201a of wavelength-converting region, this Stimulated Light 232 by the reflection of the reflection substrate of wavelength-converting region along the opposite direction outgoing of exciting light input path.When in the light path that transmission area 201b is positioned at exciting light 230, exciting light 230 through transmission area 201b along the outgoing of former direction.
Track 230a in Fig. 2 B is exactly the track that exciting light is incident in wavelength convert rotating disk, is also the track that signal 220 acts on position on wavelength convert rotating disk simultaneously.Both same track in the present embodiment, but be actually two tracks do not overlapped, namely streak two concentric circles of wavelength-converting region and transmission area.
Specifically in the present embodiment, light-emitting device also comprises light splitting piece 241, reflects Stimulated Light 232 outgoing away from the light path of exciting light 230 for transmission exciting light 230 simultaneously.Light-emitting device also comprises speculum 242,243 and closes mating plate 244, and speculum 242 and 243, for the exciting light 230 of reflectance-transmittance transmission area 201b, makes it incide and closes mating plate 244, and is combined into a branch of outgoing through closing mating plate 244 with Stimulated Light 232.Such as, exciting light is blue laser, Stimulated Light is the sodium yellow that yellow wavelengths conversion layer is excited to produce, then the blue laser being incident in wavelength convert rotating disk transmission area 201b be incident in yellow Stimulated Light that wavelength-converting region produces and be finally combined into a branch of formation and mix emergent light.The difference of light splitting piece 241 and conjunction mating plate 244 general two-beam wavelength is carried out light splitting and closes light, and the difference of optical extend or polarization state can certainly be utilized to carry out light splitting and to close light.Be appreciated that, in the present embodiment, setting just a kind of citing of light splitting piece 241, speculum 242,243 and conjunction mating plate 244, in order to realize there are other modes a lot of to Stimulated Light with through the utilization of the exciting light of transmission area, a branch ofly also have other optical texture a lot of even both will be combined into, this area engineer can design according to practical situations.
In the present embodiment, to utilize on wavelength convert rotating disk wavelength-converting region to the reflection of signal 220 and transmission area to the transmission of signal 220 or absorption, achieve the synchronizing signal that signal receiver produces.This signal does not deposit the error produced due to black tape stickup error in conventional methods where, and long-term work does not exist unstable phenomenon yet in high temperature environments.
Ingenious part of the present invention is, two effects are played in wavelength-converting region on wavelength convert rotating disk simultaneously, produce Stimulated Light 232 and reflected signal 220, the transmission area simultaneously on wavelength convert rotating disk also plays two effects simultaneously, transmission exciting light and transmission or absorption signal 220.Such structural design is the most succinct, and reliability is also best.
In the present embodiment, transmission area can be empty, namely exciting light 230 and signal 220 can directly through, transmission area can also be clear glass, now exciting light 230 can through signal 220 then may absorb by glass.Such as signal 220 adopts infrared ray as signal vehicle, and general glass (except quartz glass) all absorbs infrared ray.Certainly, even quartz glass, also can transmission signal 220 and reach identical effect.In addition, transmission area also can be diffusion sheet, now can play scattering and the effect of transmission exciting light 230, and the excitation light of outgoing can be made like this to be more evenly distributed.Generally speaking, transmission area uses glass material (transparent or translucent or scattering) filling, can play the effect of the rotation noise reducing wavelength convert rotating disk, is than more preferably.
In the present embodiment, signal projector 210 and signal receiver 211 are all positioned at the side having wavelength conversion layer of wavelength convert rotating disk, and the signal that now signal projector 210 is launched is incident on wavelength conversion layer and is reflected.In fact, signal projector and signal receiver also can be positioned at the opposite side of wavelength convert rotating disk, namely have the side of reflective substrate, and the signal that now signal projector is launched is incident in reflective substrate, and reflectivity is higher.The benefit that signal projector and signal receiver are placed on the homonymy of wavelength convert rotating disk is, both can be integrated like this, more succinct on line arrangement.
But, have a lot of material elements to constrain in real world applications opposite side that signal projector and signal receiver are placed on wavelength convert rotating disk.The position limitation of such as motor, then the reflection substrate side of such as wavelength convert rotating disk needs other structure (such as the embodiment shown in Fig. 5 A and 5B).Now, signal projector and signal receiver must be positioned at the side having wavelength conversion layer of wavelength convert rotating disk.Even so, still the reflectivity of signal in wavelength-converting region can be improved by the design improving wavelength convert rotating disk.As shown in Figure 3.Fig. 3 illustrates the design of another kind of wavelength convert rotating disk 301, wherein, wavelength-converting region 301a radially comprises Liang Ge district, echo area 301a1 and phosphor region 301a2, wherein echo area 301a1 comprises reflection substrate and does not comprise wavelength conversion layer, phosphor region 301a2 comprises reflection substrate and wavelength conversion layer, the circumference of the corresponding different-diameter scope of this Liang Ge district difference.Exciting light is incident in the circumference range corresponding to phosphor region, the sphere of action of signal projector and signal receiver is positioned at the circumference range corresponding to echo area, like this, the signal that signal projector is launched just directly acts on reflection substrate, and its luminance factor wavelength convert floor height and signal flatness will be got well.Now, reflection substrate just plays two effects simultaneously, namely in the effect of echo area 301a1 reflected signal, and reflects the effect of Stimulated Light at phosphor region 301a2.Although wavelength conversion layer does not cover whole wavelength-converting region, still belong to protection scope of the present invention.
The most commonly, signal projector and signal receiver use infrared ray as signal vehicle.In addition, the material of the most frequently used reflection substrate is aluminum or aluminum alloy.In order to strengthen the reflection to Stimulated Light, preferably, wavelength-converting region also comprises the anti-layer of increasing between wavelength conversion layer and reflection substrate.
In another embodiment of light-emitting device of the present invention, as shown in Figure 4, also comprise enclosed cavity 445, for being closed therein by wavelength convert rotating disk 401.Wherein, enclosed cavity on the wall of wavelength convert rotating disk card, comprise window, the signal launched of signal projector 410 is through this window and be incident in the card of wavelength convert rotating disk.In the present embodiment, also signal receiver 411 is incident in through window by the signal of wavelength convert rotating disk card reflection.With enclosed cavity, the benefit that wavelength convert rotating disk envelope is got up is can completely cut off the dust in air thus the service life of prolongation wavelength convert rotating disk.In the present embodiment, this window blocked by the window that signal projector and signal receiver are just positioned over enclosed cavity, also can seal window in actual applications with the material transparent to signal and signal projector and signal receiver are positioned over window-external and alignment windows, such reached effect is identical.
On basis embodiment illustrated in fig. 4, turn increase new parts in the embodiment shown in Fig. 5 A: wavelength convert rotating disk 501 comprises fins group 509, when wavelength convert rotating disk 501 rotates, this fins group 509 can produce air-flow and flows through this fins group 509 surface.Fig. 5 B illustrates the appearance that wavelength convert rotating disk looks over from fins group side.In the present embodiment visible, fins group is a series of fins along the circumferential direction arranged, and the trend of each fin is roughly along centripetal direction.Can form the air-flow of centrifugal direction like this between adjacent fin when wavelength convert dial rotation, this air-flow can help wavelength convert rotating disk to dispel the heat, with the problem avoiding the wavelength convert rotating disk that produces because of enclosed cavity overheated.In the present embodiment, the just citing of the trend of fin and arrangement mode, as long as can produce air-flow just should belong to protection scope of the present invention in rotation.In addition, the heat that the inwall of enclosed cavity also can adopt the mode that increases fin to bring to the air-flow receiving fins group 509 and produce and this air-flow, and these heats are exported to the outer surface of enclosed cavity.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a Wavelength converter, for receiving exciting light and launching Stimulated Light, is characterized in that:
Comprise wavelength convert rotating disk and motor, wavelength convert rotating disk is driven by a motor rotation; Wherein, wavelength convert rotating disk comprises at least two districts along the circumferential direction arranged, wavelength-converting region and transmission area, and wherein wavelength-converting region comprises reflection substrate and is attached to reflection substrate wavelength conversion layer surperficial at least partly;
Also comprise the signal projector and signal receiver that are positioned at wavelength convert rotating disk homonymy, along with the rotation of wavelength convert rotating disk, wavelength-converting region and transmission area be the periodic sphere of action through signal projector and signal receiver successively; When wavelength-converting region is through the sphere of action of signal projector and signal receiver, the signal that signal projector is launched is incident in wavelength-converting region and can is reflected by major part and be received by signal receiver, when transmission area is through the sphere of action of signal projector and signal receiver, the signal that signal projector is launched be incident in transmission area can major part through transmission area or be transmitted district and absorb.
2. Wavelength converter according to claim 1, is characterized in that, described transmission area comprises diffusion sheet.
3. Wavelength converter according to claim 2, is characterized in that, the material of described diffusion sheet is glass.
4. Wavelength converter according to claim 1, it is characterized in that, described wavelength-converting region radially comprises Liang Ge district, echo area and phosphor region, wherein echo area comprises reflection substrate and does not comprise wavelength conversion layer, phosphor region comprises reflection substrate and wavelength conversion layer, the circumference of the corresponding different-diameter scope of this Liang Ge district difference; Described exciting light is incident in the circumference range corresponding to phosphor region, and the sphere of action of described signal projector and signal receiver is positioned at the circumference range corresponding to echo area.
5. Wavelength converter according to claim 1, is characterized in that, described signal projector and signal receiver use infrared ray as signal vehicle.
6. Wavelength converter according to claim 1, is characterized in that, the material of described reflection substrate is aluminum or aluminum alloy.
7. Wavelength converter according to claim 1, is characterized in that, described wavelength-converting region also comprises the anti-layer of increasing between wavelength conversion layer and reflection substrate.
8. a light-emitting device, it is characterized in that, comprise excitaton source and the Wavelength converter according to any one in claim 1 to 7, the exciting light that wherein excitaton source is launched is incident in Wavelength converter, along with the rotation of wavelength convert rotating disk, the wavelength-converting region on wavelength convert rotating disk and transmission area are periodically positioned in the light path of exciting light successively; When in the light path that wavelength-converting region is positioned at exciting light, the wavelength conversion layer stimulated emission Stimulated Light on wavelength-converting region, this Stimulated Light by the reflection of the reflection substrate of wavelength-converting region along the opposite direction outgoing of exciting light input path; When in the light path that transmission area is positioned at exciting light, exciting light through transmission area along the outgoing of former direction.
9. light-emitting device according to claim 8, is characterized in that, also comprises enclosed cavity, for being closed therein by wavelength convert rotating disk; Wherein, the wall of wavelength convert rotating disk card faced by enclosed cavity comprises window, and the signal that described signal projector is launched is through this window.
10. light-emitting device according to claim 8, is characterized in that, described wavelength convert rotating disk comprises fins group, and when wavelength convert turntable rotation, this fins group can produce air-flow and flows through this fins group surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230565.3A CN104930463A (en) | 2015-05-07 | 2015-05-07 | Wavelength conversion device and light emitting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230565.3A CN104930463A (en) | 2015-05-07 | 2015-05-07 | Wavelength conversion device and light emitting device |
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| CN104930463A true CN104930463A (en) | 2015-09-23 |
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| CN201510230565.3A Pending CN104930463A (en) | 2015-05-07 | 2015-05-07 | Wavelength conversion device and light emitting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019200932A1 (en) * | 2018-04-19 | 2019-10-24 | 深圳光峰科技股份有限公司 | Light source system, projection device, and color wheel |
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| JP2007256451A (en) * | 2006-03-22 | 2007-10-04 | Mitsubishi Electric Corp | Projector apparatus |
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| CN110389489B (en) * | 2018-04-19 | 2021-10-12 | 深圳光峰科技股份有限公司 | Light source system, projection equipment and color wheel |
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