CN105353580A - Wavelength conversion device and laser light source - Google Patents
Wavelength conversion device and laser light source Download PDFInfo
- Publication number
- CN105353580A CN105353580A CN201510916794.0A CN201510916794A CN105353580A CN 105353580 A CN105353580 A CN 105353580A CN 201510916794 A CN201510916794 A CN 201510916794A CN 105353580 A CN105353580 A CN 105353580A
- Authority
- CN
- China
- Prior art keywords
- wavelength converter
- sensor
- laser
- signal
- transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2066—Reflectors in illumination beam
Abstract
The invention discloses a wavelength conversion device, and the device rotates periodically and receives laser irradiation. The device comprises a substrate, and the substrate comprises a transmission region and a non-transmission region. The device also comprises a sensor, and a signal emitted by the sensor sequentially passes through the non-transmission region and the transmission region. At least a part of the non-transmission region is provided with a reflection film. Therefore, the non-transmission region is provided with a reflection film, and the reflection film can reflect the signal emitted by the sensor. The transmission region allows the signal emitted by the sensor to be transmitted, thereby enabling the sensor to be capable of forming corresponding waveform signals according to the reflection or transmission of the signal. The changes of the waveform signals can accurately reflect the switching changes of color sections, thereby improving the synchronous control precision of the device. Meanwhile, there is no need of an additional MARK block for cooperating with the sensor, thereby improving the working reliability. The invention also discloses a laser light source device, and the laser light source device can improve the synchronization of a two-color wheel in a light source, and provides a high-quality illumination light source.
Description
Technical field
The present invention relates to light sources technical field, particularly relate to a kind of Wavelength converter and LASER Light Source.
Background technology
LASER Light Source, as a kind of solid state light emitter, has highlighted, and efficiently, the series of advantages such as the life-span is long, and colour gamut is good, environmental protection become the selection of emerging projection light source.
In the LASER Light Source used in current industry, the fluorescence of Wavelength converter generation except laser color can be used, jointly form three primary colours.In a kind of implementation of prior art, Wavelength converter is provided with at least one fluorescent powder, by periodic rotation, blue laser order is got to the fluorescence that phosphor area excitated fluorescent powder produces corresponding color, and laser-transmitting is directly gone out by transmission area.Because the purity of fluorescence is lower than laser, usually filtering apparatus is set in Wavelength converter rear end, such as filter wheel, carry out colour filter, improve the purity of fluorescence, thus export the higher three primary colours of colour purity, and then form the projected picture of bright colors, above-mentioned framework is commonly referred to as double-coloredly takes turns light source framework.And the key that the synchronous degree of consistency of two colour wheels is three primary colours to be kept monochromatic timing and export, therefore need detection and the synchro control of colour wheel being carried out to rotating speed.
In prior art, as shown in Figure 1, Wavelength converter 01 carries out driving wheel face 04 by motor 02 and rotates, and a MARK tag block 03 is set on the surface in motor 02 rotating shaft, be generally black belt, there is absorption effects, and sensor 05 is set above MARK tag block, be generally infrared sensor, infrared sensor sends detection light, due to the absorption effects of MARK tag block, in motor rotary course, when detecting illumination and being mapped on MARK tag block, detection light is absorbed, infrared sensor cannot receive, and when detecting illumination and being mapped to other positions, motor surface, detection light is then reflected back, infrared sensor is received, thus infrared sensor forms oscillogram according to the situation of infrared Absorption and reflection, the mensuration of Wavelength converter rotating speed is carried out with this, and the generation of synchronous control signal, to keep synchronous with aforesaid filtering apparatus.But this setup, black belt sticks to motor shaft surface on the one hand, and motor environment temperature is higher, black belt easily comes off under being in hot environment for a long time as organism, and sensor cannot detect effective target, and need dismounting product to carry out maintain and replace, on the other hand, also error may be there is with the position of setting in black belt when pasting, usually mark is arranged on color boundary position, and judge the initial of color and order according to the signal feedback of black belt, if there is error in mark stickup itself, so must judge to bring to the initial time of color and order and postpone or shift to an earlier date, cause inaccurate result, that carries out based on this synchronously also certainly exists the low technical matters of precise degrees, the output of filter wheel color such as may be caused to there is the colour mixture time period, the final sequential affecting three primary colours exports.
Summary of the invention
The invention provides a kind of Wavelength converter, by the non-transmissive district at transparency carrier, reflectance coating is set, can the signal of reflective sensor, transmission area can the signal of transmission sensor, solves the technical matters that the sensor synchro control precision of prior art medium wavelength conversion equipment is low.
The present invention seeks to be achieved through the following technical solutions:
A kind of Wavelength converter, Periodic Rotating also receives laser irradiation, and comprise substrate, substrate comprises transmission area and non-transmissive district, non-transmissive district at least comprises phosphor region, phosphor region is used for Stimulated Light and excites generation fluorescence, and transmission area is used for transmission laser, and phosphor region arranged outside has dichroic film, for transmission laser, and reflected fluorescent light, this substrate is transparent material, and phosphor region is the phosphor powder layer be positioned on substrate;
And also comprising sensor, sensor sends signal successively through non-transmissive district and transmission area, and wherein, at least part of region, non-transmissive district arranges reflectance coating, reflecting film reflects signal, transmissive region signal.
Further, reflectance coating is infrared reflection film.
Further, phosphor powder layer is fan-shaped or partial circle shape, and reflectance coating is positioned on phosphor powder layer at least partly.
Further, phosphor powder layer is partial circle shape, and reflectance coating is positioned at non-transmissive district and not overlapping with phosphor powder layer.
Further, the transparent shape of phosphor powder layer, phosphor powder layer comprises fluorescent powder and inorganic material.
Further, sensor is positioned at the incident side of Wavelength converter, is transceiver sensor, and transceiver sensor is for sending detectable signal and receiving the signal of reflecting film reflects.
Further, sensor comprises a transmission sensor and a receiving sensor, lays respectively at Wavelength converter both sides, and send sensor and be used for sending detectable signal, receiving sensor is for receiving the signal of transmissive region.
Further, the position that the signal that laser and sensor send arrives Wavelength converter surface is different.
Further, with the rotation center of Wavelength converter for the center of circle, laser arrives the radius of a circle at the place, position on Wavelength converter surface, different from the radius of a circle that the signal that sensor sends arrives the place, position on Wavelength converter surface.
Further, transmission area is clear glass.
Further, phosphor region comprises the fluorescent powder of one or both colors, and transmission area is used for the laser of a kind of color of transmission.
Further, phosphor region comprises the fluorescent powder of one or both colors, and transmission area is used for the laser of transmission two kinds of colors.
And, propose a kind of LASER Light Source, comprise laser instrument, send laser; And comprising the Wavelength converter of technique scheme, this Wavelength converter for receiving laser and fluorescence, and exports each primary lights successively.
Embodiment of the present invention technical scheme, its technique effect had or advantage are:
The Wavelength converter that the embodiment of the present invention proposes, by arranging reflectance coating in non-transmissive district, reflectance coating can the signal that sends of reflective sensor, the signal that transmissive region sensor sends, make sensor to be reflected according to signal or to be transmitted and form waveform signal and know the rotation situation of Wavelength converter, owing to utilizing the structure of Wavelength converter itself to signal reflex and transmission, the transmission area of device own and non-transmissive district can be reflected, especially the switching of transmission area and phosphor region color is demarcated, therefore the change of signal waveform can accurately reflect in rotary course, from fluorescence color subregion to laser color subregion or from laser color subregion to fluorescence color subregion change, do not exist because MARK tag block paste position and color district location depart from, and cause the error that the feedback of color change subregion is existed delay or shifted to an earlier date, therefore, it is possible to carry out synchro control more accurately.Meanwhile, technical solution of the present invention does not need to arrange MARK tag block again, thus avoid MARK tag block and be in the risk that may exist under hot environment and come off for a long time, thus the functional reliability of sensor is high.
The invention allows for a kind of LASER Light Source, the Wavelength converter of application technique scheme, the accuracy of the testing result of Wavelength converter sensor can be improved, and then improve synchro control precision, can carry out synchronous with filtering apparatus exactly, timing exports three primary colours or four primary, eliminates mixed color phenomenon, provides high-quality lighting source.Meanwhile, the functional reliability of LASER Light Source can also be improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Wavelength converter in prior art;
Fig. 2 is the structural representation of the Wavelength converter that the embodiment of the present invention 1 proposes;
Fig. 3 A, Fig. 3 B is respectively the cross-sectional view of the Wavelength converter that the embodiment of the present invention 1 proposes;
Fig. 4 A, Fig. 4 B is respectively the Wavelength converter plane distribution schematic diagram that the embodiment of the present invention 1 proposes;
Fig. 5 A, Fig. 5 B is that the work schedule of Wavelength converter that proposes of the embodiment of the present invention 1 and waveform sensor change schematic diagram;
Fig. 6 A, Fig. 6 B is respectively reflectance coating different distributions schematic diagram in the embodiment of the present invention 1;
Fig. 7 A, Fig. 7 B is respectively infrared signal and the position distribution schematic diagram of laser facula on Wavelength converter surface in the embodiment of the present invention 1;
Fig. 8 A, Fig. 8 B is the embodiment of the present invention 2 medium wavelength conversion equipment plane distribution schematic diagram;
Fig. 9 is that the work schedule of corresponding diagram 8B medium wavelength conversion equipment and waveform sensor change schematic diagram;
Figure 10 is the embodiment of the present invention 3 medium wavelength conversion device structure schematic diagram;
Figure 11 is LASER Light Source structural representation in the embodiment of the present invention 4;
Figure 12 is LASER Light Source structural representation in the embodiment of the present invention 5.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with accompanying drawing, the technical scheme that the embodiment of the present invention provides is described in detail.
Embodiment one
The present invention aims to provide a kind of Wavelength converter, and as shown in Figure 2, Wavelength converter 01, comprises motor 02, and motor 02 drives substrate 03, is generally discoid, does Periodic Rotating, and receives laser irradiation.Wherein, substrate 03 comprises non-transmissive district 04, with transmission area 05, non-transmissive district and transmission area form discoid wheel face, it should be noted that at this, can transmission laser relative to whether when above-mentioned transmission area and non-transmissive district, this above-mentioned subregion appellation that other embodiments of the invention are mentioned is also identical with embodiment of the present invention implication.Wherein, substrate 03 is transparent material, such as clear glass, can printing opacity, comprises infrared light.Transmission area 05 is transparent material, is generally clear glass, for the laser of transmission incidence.
See Fig. 3 A and Fig. 3 B, non-transmissive district 04 at least comprises dash area in the 04a(figure of phosphor region), and also comprise center rotational shaft district 04b.Wherein, the border circular areas that it is the center of circle that center rotational shaft district 04b is generally with the rotation center of Wavelength converter, is mainly used to be fixed discoid wheel face and motor shaft.Phosphor region 04a is specifically as follows the phosphor powder layer be positioned on substrate 03, excites generation fluorescence for Stimulated Light, and phosphor powder layer is that fluorescent powder and inorganic material mixed sintering are formed, and is the solid layer structure of transparent shape.Can be understood as, substrate 03 is as the support component of phosphor powder layer.Transmission area 05 can be a part for substrate 03, also can open the opening of definite shape on substrate 03, then by the light-transmitting materials of correspondingly-shaped, such as diffusion sheet or glass snaps fit onto opening part.
Surface, non-transmissive district 04 is also provided with reflectance coating 07, is specially infrared reflection film, is plated in surface, non-transmissive district 04 by coating process.If do not carry out plated film, from foregoing teachings, the transparent shape of substrate, be generally glass material to make, and glass has higher transmitance for infrared signal, such sensor all cannot receive effective feedback signal in the swing circle of whole Wavelength converter, cannot generate effective waveform signal.Reflectance coating 07 can cover the Zone Full in non-transmissive district 04, as shown in Figure 3A, can overlap with the phosphor powder layer region of phosphor region, namely be positioned at outside phosphor powder layer, also can be the subregion of non-transmission area 04, as shown in Figure 3 B, the subregion, non-transmissive district in non-fluorescence district can be positioned at.It should be noted that, the Wavelength converter that the embodiment of the present invention provides is Fluoroscopic formula Wavelength converter, therefore, dichroic film (not shown) is also provided with outside phosphor powder layer, for transmission laser, and reflection reaches the fluorescence of this rete, all penetrate from the Wavelength converter back side along the direction identical with laser-transmitting direction to make fluorescence.Therefore, it is possible to understand, if reflectance coating 07 covers surface, whole non-transmissive district 04, also just cover whole phosphor powder layer outside surface, particularly, reflectance coating 07 is arranged on the outside surface of dichroic film simultaneously.
See Fig. 2, sensor 06 is arranged on the side of Wavelength converter 01, such as in the laser incident side of Wavelength converter, is namely irradiated to Wavelength converter surface along the direction identical with the laser of incidence.The back side of Wavelength converter can certainly be arranged on, i.e. the exiting surface of laser.
In embodiments of the present invention, sensor 06 is transceiver sensor, be specially infrared receiving/transmission integrative sensor, infrared acquisition signal can be sent, along with the rotation of Wavelength converter 01, infrared signal is successively through non-transmissive district 04 and transmission area 05, because non-transmissive district 04 is provided with reflectance coating 07, can the infrared signal that sends of reflective sensor 06, the wavelength of the infrared signal that usual sensor sends is at about 950nm, and infrared reflection film can be set to the infrared signal of reflected range at more than 800nm, therefore can think that infrared reflection film 07 can reflect above-mentioned infrared signal completely.Transmission area 05 is glass material, and glass for the transmitance of infrared signal more than 0.99, therefore can think, transmission area 05 can this infrared acquisition signal of transmission completely.Thus sensor 06 can be reflected according to signal the waveform signal generating correspondence with the situation of transmission, knows the motion conditions of Wavelength converter, such as carries out the mensuration of rotating speed.
In specifically implementing at one, as shown in Figure 4 A, phosphor region 04a comprises phosphor region 41 and phosphor region 42, wherein phosphor region 41 and phosphor region 42 are the fluorescent powder of different colours, be such as green emitting phosphor and yellow/red fluorescence powder, two phosphor regions are fan shape, and transmission area 05 is fan shape, for transmitting blue laser.Reflectance coating 07 can be positioned at the surface of phosphor region 04a, identical with the area of phosphor region, covers whole phosphor powder layer region.Infrared signal can reflect through phosphor region 04a scope, then transmission is carried out when transmission area 04, therefore infrared receiving/transmission integrative sensor receives feedback in infrared signal within this period of phosphor region, the hopping part of the waveform signal formed, such as rising edge or negative edge then reflect the color boundary moment in phosphor region and laser-transmitting district.
The specific works process of a Wavelength converter is provided below in conjunction with Fig. 4 A and Fig. 5.
As shown in Figure 5A, transceiver sensor 06 continues to send infrared signal, when Wavelength converter 01 rotates to transmission area 05, infrared signal can be transmitted through transmission area 05, thus at whole transmission area range period, infrared signal cannot reflex to transceiver sensor 06, and sensor also just cannot receive infrared signal reflected signal.When Wavelength converter 01 rotates to phosphor region 04a, concrete is green fluorescence district 41 and red fluorescence district 42 successively respectively, infrared reflection film 07 covers this two fluorescence subregions, thus infrared signal expose to successively green fluorescence district 41 and red fluorescence district 42 surface time, at whole phosphor region range period, infrared signal can be reflexed to transceiver sensor 06 by infrared reflection film 07, and sensor can receive infrared signal, exports the waveform signal with feedback.
If with the infrared signal receiving reflection for high level signal, namely high level signal is useful signal, so according to said process, the period that transceiver sensor 06 just only rotates to phosphor region at Wavelength converter receives the signal reflected, form waveform signal as shown in Figure 5, certainly, if not receive signal for high level, then waveform signal will be anti-phase signal with forementioned waveform signal, and those skilled in the art can select to add phase inverter according to actual needs and carry out waveform phase or carry out the conversion of Logic judgment.
After sensor continues to obtain this waveform signal, the rotating speed of Wavelength converter can be judged according to the high level waveform frequency of occurrences, and the rising edge (or negative edge) due to high level (if Low level effective) just indicates the boundary of the fluorescence of laser and a kind of color, in such as Fig. 5 A, the rising edge of high level represents that color switches to green fluorescence from blue laser, and the negative edge of high level represents that color switches to blue laser from yellow/red fluorescence.In the system initialization moment, can according to the sense of rotation of default, and colour wheel initial alignment, just can judge the color of the three primary colours exported at present and the color output order of three primary colours according to the rising edge of high level (or low level) or negative edge.
As the modification of above-mentioned embodiment, those skilled in the art can understand, also reflectance coating only can be arranged in one of them phosphor region subregion, such as only reflectance coating is set in green fluorescence district, so the work schedule of infrared receiving/transmission integrative sensor and Wavelength converter coordinates figure then as shown in Figure 5 B, so infrared receiving/transmission integrative sensor is all in receive feedback signal through the generation of green fluorescence district scope, form illustrated waveform signal.
And as the another kind of modification of above-described embodiment mode, consider the rotation along with Wavelength converter, the path of the infrared signal that sensor 06 sends on Wavelength converter surface can regard a circumference as, or the annulus that width is less, therefore reflectance coating 07 preferably can only on the passage zone of infrared signal process on the 04a of phosphor region or one of them phosphor region subregion process passage zone within the scope of arrange, such as reflectance coating is set to the one section of circle ring area being positioned at 04a surface, phosphor region, as shown in Figure 4 B.
Or as a modification again of above-mentioned embodiment, the shape of two phosphor region subregions and transmission area is all set to toroidal, and namely phosphor region and transmission area are positioned at the outer circumferential area of substrate.In this case, as shown in Figure 6A, reflectance coating 07 can be positioned at phosphor region, or partly overlap with phosphor region, also as shown in Figure 6B, non-fluorescence district can be positioned at, do not overlap with phosphor region, when not overlapping with phosphor region, the shape of reflectance coating 07 can be fan-shaped, also can be annular.
Based on the Wavelength converter shown in Fig. 4 A, although infrared signal is identical with the incident direction of laser with fluorescence, but in order to fluorescence and laser can be reduced on the impact of infrared signal, such as swashing light-struck position temperature may be higher, certain heat radiation can be produced, produce interference, therefore, particularly, fluorescence is different from the position that the signal that sensor 06 sends arrives on the 04a of phosphor region, and, laser is different from the position that the signal that sensor 06 sends arrives on transmission area 05, as Fig. 7 A, shown in 7B, give the position of synchronization infrared signal hot spot on Wavelength converter surface and the laser facula difference schematic diagram at Wavelength converter surface location.
In Fig. 7 A, the circular path that the hot spot a of infrared signal is formed on Wavelength converter surface is identical at the circular path of Wavelength converter surface process with laser facula b, but at synchronization, there is the difference before and after circumferential position, even with the rotation center of Wavelength converter 01 for the center of circle, the infrared signal hot spot a that laser facula b and sensor 06 send, the radius of a circle arriving the position of phosphor region 04a and the place, position of arrival transmission area 05 is identical, in this case, need the laser beam incident light path arranged by sensor 06 away from Wavelength converter, to keep relative certain distance on circular path.
In Fig. 7 B, show circular path and laser that a kind of infrared signal formed on Wavelength converter surface in the different situation of the circular path of the surperficial process of Wavelength converter, particularly, the radius of the circular path 1 that the hot spot a of infrared signal is formed on Wavelength converter 01 surface, be less than the radius of hot spot b at the circular path 2 of the surperficial process of Wavelength converter 01 of laser formation, namely with the rotation center of Wavelength converter 01 for the center of circle, laser facula b arrives the radius of a circle at the place, position of phosphor region 04a and transmission area 05, be greater than the radius of a circle that signal hot spot a that sensor 06 sends arrives the place, position of phosphor region 04a and transmission area 05.
Above-mentioned exemplary give infrared signal hot spot Wavelength converter surface with the position difference situation of laser facula on Wavelength converter surface, in order to illustrate that infrared signal does not expose to same position at synchronization and laser.It should be noted that, in above-mentioned example, the setting position of reflectance coating 07 meets the requirement of the movement locus scope that can cover infrared signal, thus can form effective lasting reflection to infrared signal.
From above-mentioned citing, the above-mentioned one or more embodiment technical scheme of the present invention is passed through in non-transmissive district, concrete is such as that phosphor region or non-fluorescence zone position arrange reflectance coating, reflectance coating can the signal that sends of reflective sensor, the signal that transmissive region sensor sends, makes sensor can be reflected or be transmitted formation waveform signal according to signal and know the rotation situation of Wavelength converter.Owing to utilizing the structure of Wavelength converter itself to signal reflex and transmission, the transmission area of device own and non-transmissive district can be reflected, especially the switching of the color of transmission area and phosphor region is demarcated, therefore the change of signal waveform can accurately reflect in rotary course, from fluorescence color subregion to laser color subregion or from laser color subregion to fluorescence color subregion change, do not exist because MARK tag block paste position and color district location depart from, and cause the error that the feedback of color change subregion is existed delay or shifted to an earlier date, therefore, it is possible to carry out synchro control more accurately.Meanwhile, embodiment of the present invention technical scheme does not need to arrange MARK tag block again, thus avoid MARK tag block and be in the risk that may exist under hot environment and come off for a long time, thus the functional reliability of sensor is high.
Embodiment two
Derive in the embodiment of the present invention part identical with embodiment one and similar principle and do not repeat them here, unlike, in the present embodiment, as shown in Figure 8 A, phosphor region 04a is a kind of fluorescence subregion of color, specifically comprises green fluorescence district 41, and transmission area 05 is for transmitting blue laser.Or as shown in Figure 8 B, phosphor region 04a is a green fluorescence district 41, and transmission area 05 comprises transmission area 51 and transmission area 52, be respectively used to transmitting blue laser and red laser, in this specific embodiment, the Wavelength converter provided receives the incidence of blue and red two kinds of laser, and accordingly, incident LASER Light Source is two-color laser light source.
In like manner, reflectance coating setting is that on the sector region residing for green fluorescence district 41, can be fan-shaped, also can be partial circle shape.
Particularly, for Fig. 8 B, illustrate that the course of work of the Wavelength converter that the embodiment of the present invention provides is as follows:
Transmission area be blue laser transmission area 51 and red laser transmission area 52 time, and when in setting rotary course, the order direction of three kinds of colors is blue, green, red successively, see Fig. 9, sensor only rotates to the infrared signal fed back during green fluorescence district at Wavelength converter, is formed as illustrated waveform signal.The waveform signal exported due to sensor is completely mutually corresponding with the output period of each color, not life period deviation, can judge, high level initial time and rising edge represent from blue light transmission area and switch to green fluorescence district, and negative edge represents that switching to red laser from green fluorescence exports.And the low level period represents that Wavelength converter rotates to region, transmission area.Because signal exports the change accurately reflecting color, based on this accurate data, the rotating speed that effectively can control Wavelength converter also can control the synchronous situation of Wavelength converter and rear end filter wheel, improves the precision that colour wheel is synchronous.
Embodiment three
The embodiment of the present invention three proposes a kind of Wavelength converter 11, as shown in Figure 10, with in embodiment one and embodiment two unlike, in the embodiment of the present invention, sensor 06 is one group of sensor, comprises a transmission sensor 61 and a receiving sensor 62, lays respectively at the both sides of Wavelength converter, particularly, see Figure 10, send the incident side that sensor 61 is positioned at Wavelength converter 11, receiving sensor 62 is positioned at the light emission side of Wavelength converter 11.
The facilities supposing reflectance coating in the embodiment of the present invention as shown in Figure 4 B, for being positioned at one section of circle ring area of phosphor region 14 regional extent.
Based on above-mentioned setting, the course of work of this Wavelength converter is then as follows:
When sending sensor 61 and sending infrared signal, now Wavelength converter 11 rotates to phosphor region 14, infrared signal exposes to the infrared reflection film on phosphor region 14, at whole phosphor region range period, infrared signal reflects by infrared reflection film, and the receiving sensor 62 being now positioned at Wavelength converter 11 light emission side just cannot receive infrared signal.
When Wavelength converter 11 rotates to transmission area 15, infrared signal can be transmitted through transmission area 15, thus arrive receiving sensor 62, receiving sensor 62 now can receive infrared signal, thus receiving sensor just only receives the signal that transmission is come in segment limit when Wavelength converter rotation to transmission area.Ensuing signal transacting and deterministic process in like manner can refer to embodiment one and embodiment two.
In embodiments of the present invention, the difference only giving infrared sensor arranges example, in this enforcement three, phosphor region 14 is equivalent to the phosphor region 04a in embodiment one or the green fluorescence district 41 in embodiment two, transmission area 15 is equivalent to the transmission area 05 in embodiment one or embodiment two, reflectance coating is equivalent to the reflectance coating 07 in embodiment one or embodiment two, therefore identical with embodiment one, embodiment two part, does not repeat them here.
Embodiment four
The embodiment of the present invention four proposes a kind of LASER Light Source, is in particular a kind of two-color laser light source, applies the Wavelength converter as shown in Fig. 8 A in embodiment two, namely a fluorescence subregion is comprised, the fluorescence of corresponding color is produced for receiving laser excitation, and a transmission area, for transmission laser.
The light-source structure schematic diagram that the embodiment of the present invention provides as shown in figure 11, comprise blue laser 11, red laser 12, wherein blue laser forms the less hot spot meeting fluorescence excitation and require through beam shaping, be incident to the surface of Wavelength converter 20, particularly, Wavelength converter 20 does Periodic Rotating, blue laser is incident to green emitting phosphor region and the regional transmission (not shown) of Wavelength converter 20 successively, Wavelength converter 20 carries out transmission to the green fluorescence of being excited to produce, thus green fluorescence and blue laser are successively from Wavelength converter 20 back side outgoing.Another road red laser, through dissipation spot light path, the diffusion sheet (not shown) of such as moving, be incident to and close light parts-dichroic sheet 40, wherein red laser is reflected by dichroic sheet 40, and blue laser and green fluorescence, by dichroic sheet 40 transmission, form mixed white light.
The sensor setting mode of the Wavelength converter 20 in the present embodiment and reflectance coating set-up mode can the similar embodiment of the present invention one, also can mode in the similar embodiment of the present invention three, as long as infrared signal can be reached to be incident to reflective film region and can be reflected, the region that incident transmission district or non-laser transmission area do not arrange reflectance coating can be transmitted, thus sensor can be reflected according to infrared signal and produces effective waveform signal with the change of transmission.
In embodiments of the present invention, Wavelength converter 20 and filtering apparatus 30 keep synchronous axial system, in rotary course, color subregion is mutually corresponding, because blue laser and red laser are that timesharing is lighted, therefore red laser and blue laser timesharing outgoing, blue laser exposes to green fluorescence district and blue laser transmission area successively with the rotation of Wavelength converter 20, thus blue laser and green fluorescence timesharing outgoing.The light beam in a direction, road is become after the light ECDC light parts conjunction light of three kinds of colors, then electro-optical device 30 colour filter after filtration, improve the colour purity of fluorescence, the final three primary colours forming timing and export.In embodiments of the present invention, the waveform sensor of Wavelength converter accurately can reflect the switching instant of green fluorescence and blue laser, thus can be on this basis, accurately knowing on the basis of rotating speed, higher synchronous of precise degrees can also be carried out with filtering apparatus 30, thus avoid the generation of colour mixture look section.
Embodiment five
In the embodiment of the present invention five, with embodiment four unlike, provide LASER Light Source to apply Wavelength converter as shown in Figure 8 B in the embodiment of the present invention, and there is a fluorescence subregion, and two transmission subregions, the LASER Light Source that the embodiment of the present invention provides also is two-color laser light source.
As shown in figure 12, blue laser 11 and red laser 12 homeotropic alignment, conjunction light is carried out by closing light parts-dichroic mirror 40 after contracting bundle, wherein blue laser is transmitted through dichroic mirror 40, red laser is reflected by dichroic mirror 40, blue laser and red laser timesharing are lighted, thus blue laser and red laser are incident to the surface of Wavelength converter 20 successively, are incident to transmission area 51 and transmission area 52 particularly successively.And when blue laser is lighted, green fluorescence district 41 also can be exposed to, excitated fluorescent powder sends green fluorescence.Thus the light of three kinds of colors is successively from the back side outgoing of Wavelength converter 20, enter filtering apparatus 30 through collimation and after assembling further, carry out colour filter, improve colour purity, final timing exports three primary colours, enters optical wand, for optical-mechanical system improves illumination.
And, owing to adopting two-color laser light source, before two-color laser incident wavelength conversion equipment 20, usually also pass through dissipation spot parts, the diffusion sheet such as moved, dissipation spot is carried out to laser.
The above-mentioned embodiment four that provides and embodiment five, Wavelength converter passes through in non-transmissive district, concrete is such as that phosphor region or non-fluorescence zone position arrange reflectance coating, reflectance coating can the signal that sends of reflective sensor, the signal that transmissive region sensor sends, makes sensor can be reflected or be transmitted formation waveform signal according to signal and know the rotation situation of Wavelength converter.Owing to utilizing the structure of Wavelength converter itself to signal reflex and transmission, the transmission area of device own and non-transmissive district can be reflected, especially the switching of the color of transmission area and phosphor region is demarcated, therefore the change of signal waveform can accurately reflect in rotary course, from fluorescence color subregion to laser color subregion or from laser color subregion to fluorescence color subregion change, do not exist because MARK tag block paste position and color district location depart from, and cause the error that the feedback of color change subregion is existed delay or shifted to an earlier date, therefore, it is possible to carry out synchro control more accurately.Meanwhile, embodiment of the present invention technical scheme does not need to arrange MARK tag block again, thus avoid MARK tag block and be in the risk that may exist under hot environment and come off for a long time, thus the functional reliability of sensor is high.
For the light source adopting double-colored wheel construction, the synchro control realizing Wavelength converter and rear end filter wheel can be more accurate, fast, realizes the output three primary colours of timing, and the existence that non-mixed color is variegated, high-quality lighting source can be provided.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (13)
1. a Wavelength converter, Periodic Rotating also receives laser irradiation, comprise substrate, described substrate comprises transmission area and non-transmissive district, and described non-transmissive district at least comprises phosphor region, described phosphor region is used for producing fluorescence by described laser excitation, described transmission area is used for laser described in transmission, and described phosphor region arranged outside has dichroic film, for laser described in transmission, and reflect described fluorescence, it is characterized in that:
Described substrate is transparent material, and described phosphor region is be positioned at the phosphor powder layer on described substrate;
And also comprise sensor, described sensor sends signal successively through described non-transmissive district and described transmission area, and wherein, at least part of region, described non-transmissive district arranges reflectance coating,
Signal described in described reflecting film reflects, signal described in described transmissive region.
2. Wavelength converter according to claim 1, is characterized in that, described reflectance coating is infrared reflection film.
3. Wavelength converter according to claim 1, is characterized in that, described phosphor powder layer is fan-shaped or partial circle shape, and described reflectance coating is positioned on described phosphor powder layer at least partly.
4. Wavelength converter according to claim 1, is characterized in that, described phosphor powder layer is partial circle shape, and described reflectance coating is positioned at described non-transmissive district and not overlapping with described phosphor powder layer.
5. Wavelength converter according to claim 1, is characterized in that, the transparent shape of described phosphor powder layer, described phosphor powder layer comprises fluorescent powder and inorganic material.
6. Wavelength converter according to claim 1, it is characterized in that, described sensor is positioned at the incident side of described Wavelength converter, is transceiver sensor, and described transceiver sensor is for sending detectable signal and receiving the described signal of described reflecting film reflects.
7. Wavelength converter according to claim 1, it is characterized in that, described sensor comprises a transmission sensor and a receiving sensor, lay respectively at described Wavelength converter both sides, described transmission sensor is used for sending detectable signal, and described receiving sensor is for receiving the described signal of described transmissive region.
8. Wavelength converter according to claim 1 and 2, is characterized in that, the position that described laser and the signal that described sensor sends arrive described Wavelength converter surface is different.
9. Wavelength converter according to claim 8, it is characterized in that, with the rotation center of described Wavelength converter for the center of circle, described laser arrives the radius of a circle at the place, position on described Wavelength converter surface, different from the radius of a circle that the signal that described sensor sends arrives the place, position on described Wavelength converter surface.
10. Wavelength converter according to claim 1, is characterized in that, described transmission area is clear glass.
11. Wavelength converters according to claim 1 and 2, is characterized in that, described phosphor region comprises the fluorescent powder of one or both colors, and described transmission area is used for the laser of a kind of color of transmission.
12. Wavelength converters according to claim 1 and 2, is characterized in that, described phosphor region comprises the fluorescent powder of one or both colors, and described transmission area is used for the laser of transmission two kinds of colors.
13. 1 kinds of LASER Light Source, comprise laser instrument, send laser, it is characterized in that, also comprise the Wavelength converter as described in any one claim as described in claim 1-12, described Wavelength converter for receiving described laser and fluorescence, and exports each primary lights successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916794.0A CN105353580A (en) | 2015-12-14 | 2015-12-14 | Wavelength conversion device and laser light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916794.0A CN105353580A (en) | 2015-12-14 | 2015-12-14 | Wavelength conversion device and laser light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105353580A true CN105353580A (en) | 2016-02-24 |
Family
ID=55329571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510916794.0A Pending CN105353580A (en) | 2015-12-14 | 2015-12-14 | Wavelength conversion device and laser light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105353580A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654875A (en) * | 2016-03-29 | 2016-06-08 | 海信集团有限公司 | Laser projection display method and device |
| CN106704866A (en) * | 2016-07-11 | 2017-05-24 | 广州市新晶瓷材料科技有限公司 | Method and device for converting laser into white light under laser excitation as well as application thereof |
| WO2018072636A1 (en) * | 2016-10-20 | 2018-04-26 | 深圳市光峰光电技术有限公司 | Projection system |
| CN108803213A (en) * | 2017-04-27 | 2018-11-13 | 中强光电股份有限公司 | Wavelength convert filtration module and lighting system |
| CN110501867A (en) * | 2018-05-17 | 2019-11-26 | 中强光电股份有限公司 | Lighting system, projection arrangement and illumination control method |
| CN110554555A (en) * | 2018-06-01 | 2019-12-10 | 中强光电股份有限公司 | Projection device |
| CN110568705A (en) * | 2019-08-20 | 2019-12-13 | 苏州佳世达光电有限公司 | light source module and projection device suitable for same |
| CN111812931A (en) * | 2019-04-11 | 2020-10-23 | 卡西欧计算机株式会社 | Projection apparatus, projection control method, and storage medium |
| CN113031380A (en) * | 2019-12-09 | 2021-06-25 | 上海航空电器有限公司 | RGB fluorescent wheel with narrow-band luminescent spectrum for laser projector |
| US11099470B2 (en) | 2019-04-23 | 2021-08-24 | Coretronic Corporation | Wavelength conversion module and projection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100629534B1 (en) * | 2004-02-12 | 2006-09-27 | 엘지전자 주식회사 | Method and apparatus of correcting discoloration due to change of temperature |
| JP2007279450A (en) * | 2006-04-07 | 2007-10-25 | Sharp Corp | Projection display device |
| CN102043218A (en) * | 2010-08-26 | 2011-05-04 | 苏州佳世达光电有限公司 | Method and system for automatically adjusting color wheel delay |
| CN102096165A (en) * | 2010-12-21 | 2011-06-15 | 明基电通有限公司 | Color wheel motor, color wheel module and projection device |
| CN102645822A (en) * | 2011-11-28 | 2012-08-22 | 深圳市光峰光电技术有限公司 | Projecting apparatus and control method thereof |
| JP2015121575A (en) * | 2013-12-20 | 2015-07-02 | カシオ計算機株式会社 | Optical wheel device and projection device |
-
2015
- 2015-12-14 CN CN201510916794.0A patent/CN105353580A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100629534B1 (en) * | 2004-02-12 | 2006-09-27 | 엘지전자 주식회사 | Method and apparatus of correcting discoloration due to change of temperature |
| JP2007279450A (en) * | 2006-04-07 | 2007-10-25 | Sharp Corp | Projection display device |
| CN102043218A (en) * | 2010-08-26 | 2011-05-04 | 苏州佳世达光电有限公司 | Method and system for automatically adjusting color wheel delay |
| CN102096165A (en) * | 2010-12-21 | 2011-06-15 | 明基电通有限公司 | Color wheel motor, color wheel module and projection device |
| CN102645822A (en) * | 2011-11-28 | 2012-08-22 | 深圳市光峰光电技术有限公司 | Projecting apparatus and control method thereof |
| JP2015121575A (en) * | 2013-12-20 | 2015-07-02 | カシオ計算機株式会社 | Optical wheel device and projection device |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654875A (en) * | 2016-03-29 | 2016-06-08 | 海信集团有限公司 | Laser projection display method and device |
| CN106704866A (en) * | 2016-07-11 | 2017-05-24 | 广州市新晶瓷材料科技有限公司 | Method and device for converting laser into white light under laser excitation as well as application thereof |
| WO2018072636A1 (en) * | 2016-10-20 | 2018-04-26 | 深圳市光峰光电技术有限公司 | Projection system |
| CN108803213A (en) * | 2017-04-27 | 2018-11-13 | 中强光电股份有限公司 | Wavelength convert filtration module and lighting system |
| CN110501867A (en) * | 2018-05-17 | 2019-11-26 | 中强光电股份有限公司 | Lighting system, projection arrangement and illumination control method |
| CN110554555A (en) * | 2018-06-01 | 2019-12-10 | 中强光电股份有限公司 | Projection device |
| US10798349B2 (en) | 2018-06-01 | 2020-10-06 | Coretronic Corporation | Projecting apparatus |
| CN111812931A (en) * | 2019-04-11 | 2020-10-23 | 卡西欧计算机株式会社 | Projection apparatus, projection control method, and storage medium |
| US11099470B2 (en) | 2019-04-23 | 2021-08-24 | Coretronic Corporation | Wavelength conversion module and projection device |
| CN110568705A (en) * | 2019-08-20 | 2019-12-13 | 苏州佳世达光电有限公司 | light source module and projection device suitable for same |
| CN113031380A (en) * | 2019-12-09 | 2021-06-25 | 上海航空电器有限公司 | RGB fluorescent wheel with narrow-band luminescent spectrum for laser projector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105353580A (en) | Wavelength conversion device and laser light source | |
| CN105353579A (en) | Light filtering device and laser light source | |
| CN105223762B (en) | Light source output control method, system and laser projection device | |
| CN105759547B (en) | Double-colored wheel synchronisation control means, system and the laser projection device of light source | |
| EP2939070B1 (en) | Light source device and projector using the same | |
| CN105549310A (en) | Multi-color wheel synchronization method and laser projection device | |
| EP2902844B1 (en) | Light source system and related projection system | |
| US10260709B2 (en) | Laser light source, method for controlling dual color wheels of light source, and laser projection device | |
| CN203745788U (en) | Dual laser light source system | |
| CN104765240A (en) | Dual laser light source system | |
| CN106200235B (en) | Projector and the projecting method for applying it | |
| US9832433B2 (en) | Laser light source, method for controlling dual color wheels of light source, and laser projection device | |
| CN107315311A (en) | Light source module and laser projection | |
| CN103713455A (en) | Light source system and related projection system | |
| CN101836160A (en) | Multicolor illumination device using moving plate with wavelength conversion materials | |
| CN104765239A (en) | Light source system | |
| CN104880896A (en) | Lighting device and projection device | |
| JP2016105122A (en) | Illuminating device and video display device | |
| CN103728824A (en) | Light source system | |
| CN107621744A (en) | Light source and projecting apparatus | |
| CN101387724A (en) | Color wheel | |
| CN104808273A (en) | Light source system and light wavelength converter suitable for system | |
| CN110554555A (en) | Projection device | |
| CN110412820B (en) | Light source device and projection type image display device | |
| CN109298524A (en) | The projection arrangement of wavelength convert mould group and application the mould group |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160224 |
|
| WD01 | Invention patent application deemed withdrawn after publication |