CN205880480U - Illuminator and relevant projecting system and lighting system - Google Patents
Illuminator and relevant projecting system and lighting system Download PDFInfo
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- CN205880480U CN205880480U CN201620281105.3U CN201620281105U CN205880480U CN 205880480 U CN205880480 U CN 205880480U CN 201620281105 U CN201620281105 U CN 201620281105U CN 205880480 U CN205880480 U CN 205880480U
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Abstract
The utility model discloses an illuminator and relevant projecting system and lighting system, including first laser instrument, plus lens, light guide part, first lens, wavelength converters and second lens, first laser instrument is used for the outgoing exciting light, and light guide part is used for this exciting light along first light path guide to first lens, and first lens are used for focusing on this exciting light to wavelength converters, wavelength converters is used for converting the exciting light wavelength into and receives laser to with this light reflex to first lens, first lens still are used for this emergent light to light guide part, and light guide part still is used for guiding at least most second light path of following of this light to the second lens, and the second lens are used for controlling this light and realize specific light distribution, and the exciting light assembles to light guide part through the plus lens to make this exciting light through first lens incident wavelength converters's light path with mated through the light path of first lens same position outgoing by laser. The utility model has the advantages of it is small.
Description
Technical field
This utility model relates to illumination and Display Technique field, particularly relates to a kind of light-emitting device and relevant projecting system
With illuminator.
Background technology
At present, LASER Excited Fluorescence powder is widely used to illumination and Display Technique with the technology of outgoing colourama or white light
Field.
Fig. 1 is the structural representation of a kind of light-emitting device in prior art.As it is shown in figure 1, light-emitting device 10 includes laser
Device 11, collimating lens 12, reflecting mirror 13, light splitting optical filter 14, lens 15, lens 16, yellow fluorescent powder sheet 17.Laser instrument 11 goes out
The blue laser penetrated, after collimating lens 12 collimates, reflexes to light splitting optical filter 14 through reflecting mirror 13.Light splitting optical filter 14
Having the attribute of reflection blue light transmission gold-tinted, blue laser, after the reflection of light splitting optical filter 14, is incident in lens 15 He successively
16, and it is shown in dotted line to focus on phosphor sheet 17(light after lens 15 and 16).Yellow fluorescent powder sheet 17 absorbs at least
Part blue laser and produce gold-tinted, this gold-tinted is reflexed to lens 16 by reflection substrate, and is collected by lens 16 successively, and by thoroughly
Mirror 15 collimates outgoing (light such as band arrow shown in solid).
Owing to the luminescence of material for transformation of wave length is lambertian distribution, the light of this wide-angle distribution wants to collect, past
Toward needing to realize high efficiency collection and collimation through at least two lens.Light-emitting device 10 is i.e. by lens 16 and lens
15 complete two effects jointly, and one is by parallel laser focusing to phosphor sheet 17, and one is to phosphor sheet 17
The light gone out is collected and is collimated into directional light.Lens 16 bore is less and distance luminous point (phosphor sheet) is close, the light of wide-angle
After (all light within such as 70 degree) are incident in lens 16, angle is zoomed in, and is entered after being then incident in bigbore lens 15
The collimation of one step.
But, it being limited to etendue amount conservation law, the collimation of the collimated beam of lens 15 outgoing is the highest (i.e. to be dissipated
Angle is the least), it is desirable to the bore of lens 15 is the biggest (because the sinusoidal product of bore and the angle of divergence is constant, i.e. an optics
Propagation conservation).And laser optical path needs to walk around the edge of lens 15 and incident from the top of lens 15, therefore lens 15
Bore is the biggest, and the light path of laser is the longest, and the position placing laser is the most remote, and whole system volume is the hugest.
Utility model content
This utility model is mainly solving the technical problems that provide light-emitting device and the dependent projections system of a kind of small volume
System and illuminator.
This utility model embodiment provides a kind of light-emitting device, including the first laser instrument, plus lens, light guiding piece, the
One lens, Wavelength converter and the second lens；First laser instrument is used for outgoing exciting light, and light guiding piece is for by this exciting light
Guiding to the first lens along the first light path, the first lens are for focusing to Wavelength converter by this exciting light；Wavelength convert fills
Put for being Stimulated Light by least part of wavelength convert of exciting light, and its emergent light is reflexed to the first lens；First lens
Be additionally operable to collect Wavelength converter emergent light to light guiding piece, light guiding piece be additionally operable to by first lens collect light extremely
Few major part guides to the second lens along the second light path, and the light that the second lens come for controlling light guiding piece to guide realizes specific
Light is distributed；Further, the exciting light of the first laser emitting converges to light guiding piece through plus lens, so that this exciting light is through
The light path of one lens entrance Wavelength converter is mated through the light path of the first lens same position outgoing with Stimulated Light.
Alternatively, light guiding piece includes the light transmission medium of reflecting mirror and this mirror environment, and this reflecting mirror is in the first plane
On projected area less than the first lens projected area on the first plane 1/3, the first plane is for being perpendicular to the first lens
The plane of axis；This reflecting mirror is for reflexing to the first lens by the exciting light from the first laser instrument along the first light path, and this is saturating
Light medium is saturating for the major part of the emergent light of the Wavelength converter of the first lens collection is transmitted through second along the second light path
Mirror.
Alternatively, reflecting mirror is reflected excitation light and the optical filter of transmission Stimulated Light, and this optical filter is additionally operable to from ripple
The Stimulated Light of long conversion equipment is transmitted through the second lens along the second light path.
Alternatively, light guiding piece includes the reflecting mirror around loophole and this loophole, and this loophole is on the first plane
Projected area less than the first lens projected area on the first plane 1/3, the first plane is for being perpendicular to the first lens axle
The plane of line；This loophole is used for along the first light path, the exciting light from the first laser instrument is transmitted through the first lens, this reflection
Mirror reflexes to the second lens for the major part of the emergent light of the Wavelength converter collected by the first lens along the second light path.
Alternatively, loophole is transmission exciting light and the optical filter of reflection Stimulated Light, and this optical filter is additionally operable to from ripple
The Stimulated Light of long conversion equipment reflexes to the second lens along the second light path.
Alternatively, this light-emitting device also includes dispersing element, is arranged on light guiding piece and guides exciting light to the first lens
Light path on.
Alternatively, this light-emitting device also includes that second laser, the laser of the first laser emitting go out with second laser
The second laser penetrated is combined into beam of laser and is incident to plus lens；Light guiding piece is additionally operable to swash the second of the first lens collection
The part light of light guides to the second lens along the second light path.
Alternatively, the light that the second lens come for controlling light guiding piece to guide realizes collimation.
This utility model embodiment also provides for a kind of optical projection system, including any of the above-described light-emitting device.
This utility model embodiment also provides for a kind of illuminator, including any of the above-described light-emitting device.
Compared with prior art, this utility model embodiment includes following beneficial effect:
Light guiding piece is arranged between the first lens and the second lens by this utility model embodiment so that the first laser instrument
Need not be arranged on the periphery of the second lens, and can be arranged between the second lens and the first lens, structure is the compactest.And
And, owing to plus lens makes exciting light same through the first lens with Stimulated Light through the light path of the first lens entrance Wavelength converter
The light path coupling of one position outgoing, so without increasing the first lens curvature, exciting light just can be through the first lens focus at wavelength
On conversion equipment, thus avoid the problem that the distance between the first lens to the second lens needs to lengthen, solve existing veritably
There is the problem that system bulk in technology is big.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of light-emitting device in prior art；
Fig. 2 is the structural representation of an embodiment of light-emitting device in this utility model embodiment；
Fig. 3 is the structural representation of another embodiment of light-emitting device in this utility model embodiment；
Fig. 4 is the structural representation of another embodiment of light-emitting device in this utility model embodiment.
Detailed description of the invention
For the sake of quoting and understanding, being described as follows of the technical term hereafter and used in accompanying drawing:
Material for transformation of wave length: material for transformation of wave length can use phosphorescent material, such as phosphor, it would however also be possible to employ nanometer
Material, such as quantum dot, it is also possible to use fluorescent material.
Exciting light: can excitation wavelength transition material so that material for transformation of wave length produces the light of different wavelengths of light.
Stimulated Light: the light that material for transformation of wave length stimulated luminescence excites and produces.
Exciting light, material for transformation of wave length, Stimulated Light are relative concepts.Such as, blue light excites yellow fluorescent powder to produce Huang
Light, now blue light is exciting light, and gold-tinted is Stimulated Light.And gold-tinted excitated red fluorescent powder produces HONGGUANG, now gold-tinted is to excite
Light, HONGGUANG is Stimulated Light.
With embodiment, this utility model embodiment is described in detail below in conjunction with the accompanying drawings.
In order to solve the problems of the prior art, the present inventor initially considers directly to be moved down with 14 by reflecting mirror 13, and will
Reflecting mirror 14 moves down between lens 15 and lens 16, i.e. the laser of reflecting mirror 14 reflection is only incident in fluorescent material by lens 16
Sheet, so i.e. so that the first laser instrument need not be arranged on the periphery of lens 16, and can be arranged on lens 15 and lens 16
Between so that compact conformation, volume reduce.
But, laser only cannot focus on phosphor sheet 17 by lens 16, to those skilled in the art, swashs
Light can not focus on and have no relations on phosphor sheet 17, as long as can fully converge on phosphor sheet.In order to realize fully converging
Poly or poly Jiao, the curvature of lens 16 design must become greatly (curvature conference strengthens convergence).Owing to light path is reversible, phosphor sheet outgoing
Fluorescence can be relatively more straight after curvature becomes big lens 16, the straight fluorescence of comparison from lens 16 outgoing needs through long
Distance be diffused into lens 15, finally could be collimated outgoing by lens 15, thus result in system from lens 16 to lens 15 this
Length on individual direction, volume becomes big, the most really solves the problem that in prior art, system bulk is big.To this end,
The present inventor proposes this utility model embodiment and solves bulky problem veritably.
Embodiment one
Refer to the structural representation that Fig. 2, Fig. 2 are embodiments of light-emitting device in this utility model embodiment.As
Shown in Fig. 2, light-emitting device 200 includes that the first laser instrument 210, plus lens 220, reflecting mirror 230, light guiding piece 240, first are saturating
Mirror 250, Wavelength converter the 260, second lens 270.
First laser instrument 210 is for outgoing exciting light, and in the present embodiment, exciting light is blue laser.Plus lens 220 is used
In this exciting light converges to reflecting mirror 230, reflecting mirror 230 for reflexing to light guiding piece 240, light guiding piece by this exciting light
240 for guiding this exciting light to the first lens 250 along the first light path, and the first lens 250 are for focusing to this exciting light
Wavelength converter 260(exciting light is incident to the dotted line institute of the light such as band arrow of Wavelength converter from the first laser instrument
Show).
Wavelength converter 260 is used for the whole wavelength convert of exciting light from the first lens being Stimulated Light, and by it
Emergent light, i.e. this Stimulated Light reflex to the first lens 250.In the present embodiment, Wavelength converter includes yellow fluorescent powder, this Huang
Whole for blue laser wavelength convert are yellow Stimulated Light by color fluorescent material.
First lens 250 are additionally operable to collect the emergent light of Wavelength converter 260, and i.e. yellow Stimulated Light is to light guiding piece
240, light guiding piece is additionally operable to the light collected by the first lens, and i.e. the yellow Stimulated Light of Wavelength converter outgoing is all along second
Light path guides to the second lens 270, and the yellow Stimulated Light that the second lens 270 come for controlling light guiding piece 240 to guide realizes standard
Straight outgoing (Stimulated Light from Wavelength converter through the first lens, light guiding piece, the reality of light such as band arrow of the second lens outgoing
Shown in line).
In the present embodiment, light guiding piece 240 is specially light splitting optical filter, has reflected excitation light and the genus of transmission Stimulated Light
Property, for the laser-bounce of in the future self-reflection mirror 230 to the first lens, and the Stimulated Light that the first lens are collected is transmitted through second
Lens 270.
In the present embodiment, the exciting light of the first laser instrument 210 outgoing is not collimated collimated, but through plus lens
220 converge, so that this exciting light is same through the first lens with Stimulated Light through the light path of the first lens 250 incident wavelength conversion equipment
The light path coupling of one position outgoing.As in figure 2 it is shown, light 91 and light 93 represent the Stimulated Light light of the first lens one position respectively
Road and exciting light light path, these two light are to overlap in the part of the first lens, i.e. mate；Equally, light 92 and light
The 94 Stimulated Light light path representing the first lens another location respectively and exciting light light paths, these two light are in the part of the first lens
Also it is to overlap, i.e. mates.
In the present embodiment, due to plus lens make exciting light through the first lens entrance Wavelength converter light path be subject to
Laser mates through the light path of the first lens same position outgoing, so without increasing the first lens curvature, exciting light just can be through the
One lens focus is on Wavelength converter, thus avoids the distance between the first lens to the second lens and need lengthen to ask
Topic.
Therefore, light guiding piece is arranged between the first lens and the second lens by the present embodiment so that the first laser instrument is not
With being arranged on the periphery of the second lens, and can be arranged between the second lens and the first lens, structure is the compactest；Simultaneously
Distance between one lens to the second lens, also without lengthening, solves the problem that in prior art, system bulk is big veritably.
Further, the direct scheme being arranged between two lens by first reflecting mirror initially considered compared to the present inventor (is called for short initial
Scheme), present inventor has performed many experiments contrast, find that the present embodiment focuses to the spot size ratio of Wavelength converter just
The spot size of beginning scheme is much smaller.
In the present embodiment, the laser of reflecting mirror 230 self-aggregation lens in the future is bent to light guiding piece 240.Implement at other
In example, reflecting mirror 230 can also omit, as long as adjusting the first laser instrument 210 and the putting position of plus lens 220 and angle,
The laser straight making plus lens outgoing connects incident illumination guiding piece 240.
In the present embodiment, the light that the second lens come for controlling light guiding piece to guide realizes collimation.In other embodiments,
Second lens can be used for controlling light guiding piece and guide the light come to realize the distribution of other specific light, such as, focus on or vapour
The light distribution of car car light.The light distribution of automobile lamp has the standard determined in the prior art, does not repeats.
Additionally, in other embodiments, Wavelength converter can use LED as substrate, and material for transformation of wave length is (as glimmering
Light powder) it is arranged in the light-emitting area of LED in modes such as coating or pad pastings.Such as, when using blue led as Wavelength converter
Substrate time, the one side of material for transformation of wave length is by the exciting of laser from the first lens, and another side is swashed by this blue led
Sending out, i.e. material for transformation of wave length is two-sided is excited simultaneously, thus can improve the emergent light brightness of light-emitting device.For another example, use is worked as
When red LED is as the substrate of Wavelength converter, although material for transformation of wave length will not be excited by this red LED, but red
Outgoing together with the Stimulated Light that the HONGGUANG of LED outgoing can produce with material for transformation of wave length, such that it is able to increase red for light-emitting device
The energy of light spectrum, compensate for the defect that the red energy of Stimulated Light is not enough；Now light splitting optical filter 240 preferably reflection excites
The light splitting optical filter of light and transmission Stimulated Light and HONGGUANG.
Complicated, therefore to make up the redness energy of Stimulated Light owing to arranging the technics comparing of material for transformation of wave length on LED
The defect that amount is not enough, light-emitting device can also include that second laser, the laser of the first laser emitting go out with second laser
The second laser penetrated is combined into beam of laser and is incident to plus lens；Further, light guiding piece is additionally operable to the first lens collection
The part light of the second laser guides to the second lens along the second light path.Such as, light splitting optical filter 240 swashing for second laser
Light preferably has the attribute that fractional transmission is partially reflective, so that this laser finally can be through light splitting after being scattered by Wavelength converter
Optical filter is along the second light path outgoing to the second lens.Second laser is preferably red laser or green laser so that ripple
Outside long conversion equipment outgoing Stimulated Light, go back red laser or green laser that outgoing has been scattered by material for transformation of wave length, thus
Red-light spectrum or the energy of green spectrum is increased for light-emitting device.Second laser can also be infrared laser, the most permissible
The energy of infrared spectrum is increased, in order to by infrared detector, user can find that this luminescence fills at night for light-emitting device
Put.
Embodiment two
Refer to the structural representation that Fig. 3, Fig. 3 are embodiments of light-emitting device in this utility model embodiment.As
Shown in Fig. 3, light-emitting device 300 includes that the first laser instrument 310, plus lens 320, reflecting mirror 330, light guiding piece 340, first are saturating
Mirror 350, Wavelength converter the 360, second lens 370.
The present embodiment essentially consists in place of the difference of embodiment one:
(1) Wavelength converter 360 is used for the exciting light partial wavelength conversion from the first lens being Stimulated Light, and
By its emergent light, i.e. this Stimulated Light with the laser-bounce do not changed to the first lens.In the present embodiment, Wavelength converter bag
Including yellow fluorescent powder, the emergent light of Wavelength converter is that yellow Stimulated Light is white with what the blue laser do not changed mixed
Light.
(2) light guiding piece 340 includes the air of reflecting mirror and this mirror environment, and this reflecting mirror is for by reflecting mirror 330
The exciting light that reflection comes reflexes to the first lens along the first light path.Herein it should be noted that reflecting mirror herein is for coming
It is reflection from the exciting light of the first laser instrument, is not offered as any light is all reflected.The reflecting mirror of light guiding piece 340 is first
Projected area in plane is less than the 1/3 of the first lens projected area on the first plane, and the first plane is for being perpendicular to first
The plane of lens 350 axis, so that exciting light is incident to the etendue amount of the first lens less than the first lens outgoing wave
The 1/3 of the etendue amount of the emergent light of long conversion equipment.The air of the mirror environment of light guiding piece 340 is for saturating by first
The emergent light of the Wavelength converter 360 that mirror 350 is collected, i.e. the major part of white light is transmitted through the second lens 370 along the second light path,
Make the white light that light-emitting device 300 outgoing collimates.It is understood that the air of mirror environment can also to replace to other saturating
Light medium.
(3) light-emitting device 300 also includes dispersing element 380, for dissipating the exciting light from the first laser instrument
Penetrate.Dispersing element 380 is to make laser form a little angle of divergence, so so that focus on material for transformation of wave length
Laser facula homogenization, improve material for transformation of wave length efficiency, therefore dispersing element 380 can be arranged on plus lens to ripple
Any position in the light path of long conversion equipment.Because dispersing element must be placed at the place that light beam is thinner, otherwise optics
Propagation can become big, and makes the hot spot focusing on material for transformation of wave length can become big, therefore, in the present embodiment, and dispersing element
380 are arranged on light guiding piece 340 guides exciting light to the light path of the first lens 350.
It is same as embodiment one, in the present embodiment, owing to plus lens makes exciting light through the first lens entrance wavelength convert
The light path of device is mated through the light path of the first lens same position outgoing with Stimulated Light, so between the first lens to the second lens
Distance, without lengthening, solves the problem that in prior art, system bulk is big veritably.Further, the present embodiment utilizes incidence
The etendue amount of exciting light is much smaller than the feature of the etendue amount of the emergent light of Wavelength converter, in going out of the first lens
Penetrate the reflecting mirror that setting area in light path is less, ensure that most of emergent light of Wavelength converter can be from mirror environment
Exciting light is introduced while air outgoing.Relative to embodiment one, there is the advantage that structure is the compactest, volume is less.
In the present embodiment, owing to light path is reversible, the fraction emergent light of Wavelength converter 360, including Stimulated Light with not
The exciting light changed, can be subject to if this reflecting mirror also reflects through the first lens 350 outgoing to the reflecting mirror of light guiding piece 340
Laser, then Stimulated Light can be reflected by a reflector and escape.Owing to reflecting mirror projected area on the first plane is less than first
The 1/3 of lens projected area on the first plane, so this part light energy ratio escaped is smaller, this is in some occasion
In be acceptable, such as hypermetropia occasion.
In order to reduce light loss, in other embodiments, the reflecting mirror of light guiding piece 340 can be to reflect to swash from first
The exciting light of light device and transmission are from the optical filter of the Stimulated Light of Wavelength converter, such as reflection blue exciting light transmission yellow
Stimulated Light, this optical filter is additionally operable to along the second light path, this Stimulated Light is transmitted through the second lens.But, no matter how, wavelength turns
The exciting light do not changed of changing device outgoing all can be reflected by a reflector and escape, therefore the reflecting mirror of light guiding piece 340
Area the smaller the better, it is sufficient to receive from whole exciting lights of the first laser instrument.
Embodiment three
Refer to the structural representation that Fig. 4, Fig. 4 are embodiments of light-emitting device in this utility model embodiment.As
Shown in Fig. 4, light-emitting device 400 includes the first laser instrument 410, plus lens 420, light guiding piece the 440, first lens 450, wavelength
Conversion equipment the 460, second lens 470.
The present embodiment essentially consists in place of the difference of embodiment two:
In the present embodiment, light guiding piece 440 includes the reflecting mirror 442 around loophole 441 and this loophole, this loophole
441 projected areas on the first plane are less than the 1/3 of the first lens projected area on the first plane, and the first plane is vertical
Straight in the plane of the first lens axis.Loophole 441 is used for the exciting light from the first laser instrument 410 along the first light path transmission
To the first lens 450, reflecting mirror 442 is used for the major part of the emergent light of the Wavelength converter by the first lens collection along second
Light path reflexes to the second lens 470.Herein it should be noted that loophole herein is for exciting from the first laser instrument
Just transmission, is not offered as all transmissions of any light.
In the present embodiment, owing to light path is reversible, the fraction emergent light of Wavelength converter 460, including Stimulated Light with not
The exciting light changed, understands through the first lens 450 outgoing to loophole 441, if loophole also transmission Stimulated Light, then Stimulated Light
Can be escaped by loophole transmission.Due to loophole 441 projected area on the first plane less than the first lens first
1/3 of projected area in plane, so this part light energy ratio escaped is smaller, this is to connect in some occasion
It is subject to, such as hypermetropia occasion.
In order to reduce light loss, in other embodiments, loophole can be the transmission exciting light from the first laser instrument
And reflection is from the optical filter of the Stimulated Light of Wavelength converter, such as transmitting blue exciting light reflection yellow Stimulated Light, this filter
Mating plate is additionally operable to along the second light path, this Stimulated Light is reflexed to the second lens.But, no matter how, Wavelength converter outgoing
The exciting light do not changed all can be escaped by loophole transmission, and therefore the area of loophole is the smaller the better, it is sufficient to receives
From whole exciting lights of the first laser instrument.
It is same as embodiment one, in the present embodiment, owing to plus lens makes exciting light through the first lens entrance wavelength convert
The light path of device is mated through the light path of the first lens same position outgoing with Stimulated Light, so between the first lens to the second lens
Distance, without lengthening, solves the problem that in prior art, system bulk is big veritably.Further, the present embodiment utilizes incidence
The etendue amount of exciting light is much smaller than the feature of the etendue amount of the emergent light of Wavelength converter, in going out of the first lens
Penetrate the reflecting mirror that band loophole is set in light path, can be reflected by a reflector at the most of emergent light ensureing Wavelength converter
Exciting light is introduced by loophole while outgoing.Compared in above-described embodiment between the first lens and the second lens
Light guiding piece, the light guiding piece in the present embodiment may be located at the first lens and the side of the second lens, it is easier to fixing with
Install.
The various embodiments described above solve the technical problem that and are, when needing to collect the wide-angle distribution light of Wavelength converter outgoing
Time, the bulky problem that light-emitting device exists.It is understood that this utility model is not limited in for outgoing wide-angle
The Wavelength converter of distribution light, and it is equally applicable to other devices of outgoing wide-angle distribution light, such as scattering device.True
On, the second laser of outgoing the second laser mentioned in embodiment one, such as red laser, Wavelength converter for
This second laser is i.e. equivalent to scattering device.Therefore, the Wavelength converter in the various embodiments described above can replace to scattering dress
Put, and now, the laser of the first laser emitting needs not be exciting light.
The light-emitting device that Wavelength converter replaces to scattering device includes that the first laser instrument, plus lens, light guide
Part, the first lens, scattering device and the second lens；First laser instrument is used for shoot laser, and light guiding piece is for by this laser edge
First light path guides to the first lens, and the first lens are used for this laser focusing to scattering device；Scattering device is for by laser
Scattering is scattered light, and by its emergent light, i.e. this scattered light reflexes to the first lens；First lens are additionally operable to collect scattering device
Emergent light to light guiding piece, light guiding piece be additionally operable to by first lens collect light part along second light path guide to second
Lens, the light that the second lens come for controlling light guiding piece to guide realizes the distribution of specific light；Further, first laser emitting
Laser converges to light guiding piece through plus lens, so that this laser is through the light path of the first lens entrance scattering device and scattered light
Light path coupling through the first lens same position outgoing.
In this utility model embodiment, owing to plus lens makes exciting light through the light of the first lens entrance to scattering device
Road is mated through the light path of the first lens same position outgoing with scattered light, so without increasing the first lens curvature, exciting light is just
Through the first lens focus on scattering device, thus the distance between the first lens to the second lens can be avoided and needs lengthen to ask
Topic.Therefore, light guiding piece is arranged between the first lens and the second lens by the present embodiment so that the first laser instrument need not be arranged
In the periphery of the second lens, and can be arranged between the second lens and the first lens, structure is the compactest；First lens simultaneously
To the distance between the second lens also without lengthening, solve the problem that in prior art, system bulk is big veritably.Further, phase
The direct scheme (abbreviation initial scheme) that first reflecting mirror is arranged between two lens initially considered compared with the present inventor, this
Inventor has carried out many experiments contrast, finds that the present embodiment focuses to the spot size hot spot than initial scheme of scattering device
Size is much smaller.
The structure that the light-emitting device that Wavelength converter replaces to scattering device can possess in the various embodiments described above with
Function, describes in detail and refer to the various embodiments described above, only simply enumerates some herein:
Light guiding piece can be such as embodiment one in light splitting optical filter, this light splitting optical filter has laser part transmission
Partially reflective attribute, for the part light of the laser from the first laser instrument is guided to the first lens along the first light path, will
The part light of the emergent light of the scattering device that the first lens are collected guides outgoing along the second light path.Such as, light splitting optical filter is permissible
For the part light of the laser from the first laser instrument is reflexed to the first lens along the first light path, that is collected by the first lens dissipates
The part light of the emergent light of injection device is transmitted through the second lens along the second light path.
Light guiding piece can also as in embodiment two and embodiment three subregion.Such as, light guiding piece can include instead
Penetrating the light transmission medium of mirror and this mirror environment, this reflecting mirror projected area on the first plane is less than the first lens first
1/3 of projected area in plane, the first plane is the plane being perpendicular to the first lens axis；This reflecting mirror is for will be from the
The laser of one laser instrument reflexes to the first lens along the first light path, and this light transmission medium is for the scattering device collected by the first lens
The major part of emergent light be transmitted through the second lens along the second light path.Or, light guiding piece includes loophole and this loophole week
The reflecting mirror enclosed, this loophole projected area on the first plane is less than the first lens projected area on the first plane
1/3, the first plane is the plane being perpendicular to the first lens axis；This loophole is for by from the laser of the first laser instrument along the
One light path is transmitted through the first lens, this reflecting mirror for the major part of the emergent light of scattering device that the first lens are collected along the
Two light paths reflex to the second lens.
Alternatively, light-emitting device also includes second laser, the laser of the first laser emitting and second laser outgoing
The second laser be combined into beam of laser and be incident to plus lens；Light guiding piece is additionally operable to the second laser collected by the first lens
Part along second light path guide to the second lens.Second laser is preferably red laser, green laser or infrared sharp
Light device.
In this specification, what each embodiment stressed is the difference with other embodiments, each embodiment
Between identical similar portion see mutually.
This utility model embodiment also provides for a kind of optical projection system, including light-emitting device, on this light-emitting device can have
State the structure in each embodiment and function.This optical projection system can use various shadow casting technique, such as liquid crystal display (LCD,
Liquid Crystal Display) shadow casting technique, digital light path processor (DLP, Digital Light Processor) throw
Shadow technology.Such as, the light-emitting device of above-mentioned ejecting white light can be as the white light source of optical projection system.
This utility model embodiment also provides for a kind of illuminator, including light-emitting device, on this light-emitting device can have
State the structure in each embodiment and function.Illuminator such as has torch for illumination system, auto lamp illuminator, stage lighting to illuminate
System etc..
The foregoing is only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, all
It is the equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion, or directly or indirectly uses
In the technical field that other are relevant, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (10)
1. a light-emitting device, it is characterised in that include the first laser instrument, plus lens, light guiding piece, the first lens, wavelength
Conversion equipment and the second lens；
First laser instrument is used for outgoing exciting light, and light guiding piece is used for guiding to the first lens this exciting light along the first light path,
First lens are for focusing to described Wavelength converter by this exciting light；
It is Stimulated Light that described Wavelength converter is used at least part of wavelength convert of described exciting light, and by anti-for its emergent light
It is incident upon the first lens；
First lens are additionally operable to collect the emergent light extremely described smooth guiding piece of described Wavelength converter, and described smooth guiding piece is also used
At least most of in the light collected by the first lens guides to the second lens along the second light path, and the second lens are used for controlling described
Light guiding piece guides the light come to realize the distribution of specific light；
Further, the exciting light of the first laser emitting converges to described smooth guiding piece through described plus lens, so that this excites
Light through the light path of Wavelength converter described in the first lens entrance and described Stimulated Light through the light of the first lens same position outgoing
Road is mated.
Light-emitting device the most according to claim 1, it is characterised in that described smooth guiding piece includes reflecting mirror and this reflecting mirror
Light transmission medium around, this reflecting mirror projected area on the first plane is less than the first lens perspective plane on the first plane
Long-pending 1/3, the first plane is the plane being perpendicular to the first lens axis；This reflecting mirror is for by exciting from the first laser instrument
Light reflexes to the first lens along the first light path, and this light transmission medium is for going out the described Wavelength converter of the first lens collection
The major part penetrating light is transmitted through the second lens along the second light path.
Light-emitting device the most according to claim 2, it is characterised in that described reflecting mirror is for reflecting described exciting light and transmission
The optical filter of described Stimulated Light, this optical filter is additionally operable to the Stimulated Light from described Wavelength converter along the second light path transmission
To the second lens.
Light-emitting device the most according to claim 1, it is characterised in that described smooth guiding piece includes loophole and this loophole
Reflecting mirror around, this loophole projected area on the first plane is less than the first lens projected area on the first plane
1/3, the first plane is the plane being perpendicular to the first lens axis；This loophole is for by the exciting light from the first laser instrument
It is transmitted through the first lens, the emergent light of this reflecting mirror described Wavelength converter for being collected by the first lens along the first light path
Major part reflex to the second lens along the second light path.
Light-emitting device the most according to claim 4, it is characterised in that described loophole is exciting light and reflection described in transmission
The optical filter of described Stimulated Light, this optical filter is additionally operable to reflect the Stimulated Light from described Wavelength converter along the second light path
To the second lens.
Light-emitting device the most according to claim 1, it is characterised in that this light-emitting device also includes dispersing element, is arranged on
Described exciting light is guided to the light path of the first lens by described smooth guiding piece.
Light-emitting device the most according to claim 1, it is characterised in that this light-emitting device also includes second laser, first
The laser of laser emitting is combined into beam of laser with the second laser of second laser outgoing and is incident to described plus lens；Institute
The part light stating the second laser that light guiding piece is additionally operable to collect the first lens guides to the second lens along the second light path.
Light-emitting device the most according to any one of claim 1 to 7, it is characterised in that the second lens are used for controlling described
Light guiding piece guides the light come to realize collimation.
9. an optical projection system, it is characterised in that include the light-emitting device as according to any one of claim 1 to 8.
10. an illuminator, it is characterised in that include the light-emitting device as according to any one of claim 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620281105.3U CN205880480U (en) | 2016-04-06 | 2016-04-06 | Illuminator and relevant projecting system and lighting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620281105.3U CN205880480U (en) | 2016-04-06 | 2016-04-06 | Illuminator and relevant projecting system and lighting system |
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| Publication Number | Publication Date |
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| CN205880480U true CN205880480U (en) | 2017-01-11 |
Family
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| CN201620281105.3U Active CN205880480U (en) | 2016-04-06 | 2016-04-06 | Illuminator and relevant projecting system and lighting system |
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