CN108533980A - Laser light source, light-emitting device and lamps and lanterns - Google Patents
Laser light source, light-emitting device and lamps and lanterns Download PDFInfo
- Publication number
- CN108533980A CN108533980A CN201810295111.8A CN201810295111A CN108533980A CN 108533980 A CN108533980 A CN 108533980A CN 201810295111 A CN201810295111 A CN 201810295111A CN 108533980 A CN108533980 A CN 108533980A
- Authority
- CN
- China
- Prior art keywords
- light
- laser
- converging device
- fluorescent apparatus
- converging
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/69—Details of refractors forming part of the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
- F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
- F21V9/35—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material at focal points, e.g. of refractors, lenses, reflectors or arrays of light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/30—Semiconductor lasers
Abstract
It proposes a kind of laser light source and relevant light-emitting device and lamps and lanterns, includes the laser emitting source for emitting laser, the first converging device and the second converging device, wherein the first converging device and the second converging device are all globe lens or globe lens group；Further include the fluorescent apparatus being located on the second converging device the second side optical axis, the distance of the fluorescent apparatus to the interarea of the second converging device is less than the minimum focus of the second converging device the second side, and wherein A is more than or equal to 50 degree；Laser successively focuses on fluorescent apparatus after the first converging device and the second converging device near optical axis and fluorescent apparatus is made to generate stimulated light.Second converging device uses full spherical design, and fluorescent apparatus is positioned over the appropriate location within the second converging device focus, can make emergent light still orderly without intersecting, desired optics purpose may be implemented by the optical design of rear end in this way.First converging device can then make the focus of the neighbouring incident laser of optical axis advance to the position of fluorescent apparatus.
Description
Technical field
The present invention relates to lighting areas, more particularly to a kind of laser light source, and use the luminous dress of this laser light source
It sets and lamps and lanterns.
Background technology
Laser light source has been applied in headlight for vehicles, Projection Display.A kind of structure such as Fig. 1 institutes of common laser light source
Show.Laser 121 is incident in convex lens group 101 and 102, and focuses on the fluorescence in convex lens group focus by convex lens group
On device 103.103 stimulated emission stimulated light 122 of fluorescent apparatus, the stimulated light 122 are reflected with full-shape, and largely by convex lens
Group 101 and 102 collects and collimates outgoing.Light splitting optical filter between laser emitting source and convex lens group light path is for transmiting
Laser 121 reflects stimulated light 122 simultaneously, and the light path of the two is separated, and avoids stimulated light from being returned along the light path of incident laser and swashs
Photo-emission source forms light loss.Wherein, parallel laser 121 focuses on the dress of the fluorescence in convex lens group focus by convex lens group
It sets, and shining for fluorescent apparatus forms parallel light emergence after the collection of convex lens group.This complies fully with the reversible original of light path
Reason.The problem of this light-source structure, is that convex lens group will collect the polarizers of big angle scope emergent light of fluorescent apparatus and be reflected
At directional light, necessarily at least a piece of in convex lens group is non-spherical lens.The difficulty of processing and cost of glass aspheric lenses
It is all very high.
Invention content
The present invention proposes a kind of laser light source, includes the laser emitting source for emitting laser, the first converging device and the
Two converging devices, wherein the first converging device and the second converging device are all globe lens or globe lens group and have real focus, the
The side towards the first converging device of two converging devices is known as the first side, is known as second backwards to the side of the first converging device
Side；To the parallel rays of optical axis different distance, it is incident in the first side port diameter of the second converging device in the second converging device
The second side forms focus, and the focal length of focus corresponding to the parallel rays far from optical axis is less than corresponding to the parallel rays close to optical axis
The focal length of focus, the parallel rays for being incident in second converging device the first side port diameter edge correspond to the second converging device the second side
Minimum focus focus；Further include the fluorescent apparatus being located on the second converging device the second side optical axis, the fluorescent apparatus to the
The distance of the interarea of two converging devices is less than the minimum focus of the second converging device the second side, and the angle of fluorescent apparatus transmitting is
The angle of emergence of the light of A after the outgoing of the second converging device is more than or equal to light of any launch angle less than A and passes through second
The angle of emergence after converging device outgoing, wherein A are more than or equal to 50 degree；First converging device and the combined light of the second converging device
System so that the parallel rays near optical axis is after the first converging device and the second converging device in the second converging device
The focus that two sides generate is located on fluorescent apparatus；Laser successively passes through the first converging device and the second converging device near optical axis
After focus on fluorescent apparatus and make fluorescent apparatus generate stimulated light.
The present invention also proposes that a kind of light-emitting device, including two groups of above-mentioned laser light sources, first laser light source and second swash
Radiant；Wherein the laser emitting source transmitting of first laser light source is first laser, and first laser is blue laser, fluorescence
Device is the first fluorescent apparatus, and the stimulated light of the first fluorescent apparatus transmitting is yellow light, green-yellow light, orange light, feux rouges or green light；Second
The laser emitting source transmitting of laser light source is second laser, and second laser is purple or ultraviolet laser, and fluorescent apparatus is the
The stimulated light of two fluorescent apparatus, the transmitting of the second fluorescent apparatus is blue light；First laser light source and second laser light source share same
A wavelength light-dividing device, the wavelength light-dividing device transmit purple or ultraviolet laser, reflection blue light and transmit yellow light to feux rouges wave
Section, first laser are incident in the wavelength light-dividing device and are reflected into and penetrate in the first fluorescent apparatus, the transmitting of the first fluorescent apparatus
Stimulated light transmission peak wavelength light-dividing device, while second laser transmits the wavelength light-dividing device and is incident in the second fluorescent apparatus, the
Two fluorescent apparatus transmitting stimulated light reflected by wavelength light-dividing device, the first fluorescent apparatus and the second fluorescent apparatus transmitting be excited
Light is combined into a branch of and is emitted at wavelength light-dividing device；Alternatively, first laser light source and second laser light source share the same wave
Long light-dividing device, the wavelength light-dividing device reflect purple or ultraviolet laser, transmission blue light and reflect yellow light to feux rouges wave band, the
One laser transmits the wavelength light-dividing device and is incident in the first fluorescent apparatus, and the stimulated light of the first fluorescent apparatus transmitting is by wavelength point
Electro-optical device reflects, while second laser reflects and be incident in the second fluorescent apparatus, the second fluorescent apparatus by the wavelength light-dividing device
The stimulated light of the stimulated light transmission peak wavelength light-dividing device of transmitting, the first fluorescent apparatus and the transmitting of the second fluorescent apparatus is divided in wavelength
It is combined into a branch of at device and is emitted.
The present invention also proposes a kind of lamps and lanterns, including above-mentioned laser light source, further includes being located at laser light source light path rear end
Means for diverging and collimator apparatus, the light that laser light source is sent out are incident in collimator apparatus after means for diverging dissipates and are formed parallel
Light is emitted.
The present invention also proposes a kind of lamps and lanterns, including above-mentioned light-emitting device, further includes being located at light-emitting device light path rear end
Means for diverging and collimator apparatus, the light that light-emitting device is sent out are incident in collimator apparatus after means for diverging dissipates and are formed parallel
Light is emitted.
Second converging device uses full spherical design, and it is appropriate within the second converging device focus that fluorescent apparatus is positioned over
Position can make emergent light still orderly without intersecting, desired optics may be implemented by the optical design of rear end in this way
Purpose.First converging device can then make the focus of the neighbouring incident laser of optical axis advance to the position of fluorescent apparatus.In this way may be used
To realize optical design target, while avoiding the high cost of non-spherical lens.
Description of the drawings
Fig. 1 shows the structural schematic diagrams of existing laser light source；
Fig. 2 a illustrate the focus schematic diagram of the second converging device in the present invention；
Fig. 2 b illustrate index path of the fluorescent apparatus after the collection of the second converging device in the present invention；
Fig. 2 c illustrate that laser is successively incident in the focused light passages figure after the first converging device and the second converging device；
Fig. 3 illustrates the structural schematic diagram of the laser light source of first embodiment of the invention；
Fig. 4 a illustrate a kind of structural schematic diagram of lamps and lanterns of the present invention, wherein light-emitting window of the means for diverging in laser light source；
Fig. 4 b illustrate state of the means for diverging far from laser light source light-emitting window in Fig. 4 a structures；
Fig. 5 illustrates the structural schematic diagram of one embodiment of light-emitting device of the present invention.
Specific implementation mode
Before describing technical scheme of the present invention, the deduction of some optical principles is first described.As shown in Figure 2 a, spherical surface is convex
Lens 201 and spherical convex lens 202 form convex lens group.Parallel rays 22A, 22C, 22E are incident from the left side of the convex lens group,
Wherein light 22A is close to optical axis, and light 22E is close to the edge of convex lens group effective aperture, and the incoming position of light 22C is in light
Between 22A and 22E.Since 201 and 202 be all spherical convex lens, there is real focus, therefore directional light can be on the right side of convex lens group
Form focus.Due to spherical surface, the focus of the parallel rays of each position incidence simultaneously differs, and here it is the productions of " spherical aberration "
Raw reason.Light is closer to the edge of effective aperture, then spherical aberration is bigger.Specifically, it is exactly light 22A close to optical axis,
The focus that the right side of convex lens group generates is farthest, shown in FIG as fA；And light 22E having farthest away from optical axis from convex lens group
The marginal incident for imitating bore, it is nearest in the focus that the right side of convex lens group generates, shown in FIG as fE, in light 22A and
Incident light between light 22E（Such as light 22C）The focus generated on the right side of convex lens group then can successively be fallen in fAAnd fEIt
Between.In this way, between light 22A and 22E position consecutive variations parallel rays, can be formed on the optical axis on the right side of convex lens group
In fAAnd fEBetween position consecutive variations focus, these focuses have collectively constituted line segment fAfE。
In fact, any globe lens or globe lens group, as long as having real focus（There is convergence effect to light）, Jiu Huicun
In the line segment of such focus composition, and all it is one end endpoint correspondence close apart from globe lens or globe lens group of focus line segment
In paraxial parallel rays, the focus line segment one end endpoint remote apart from globe lens or globe lens group corresponds to having far from optical axis
Imitate the parallel rays of bore marginal incident.
In figure 2b, the convex lens group that convex lens group 201 and 202 forms is simplified shown as the line segment 209 of a double-head arrow,
The line segment 209 is located at the interarea of the convex lens group.Light emitting source 203 is located on the right side of convex lens group, its distance u apart from interarea 209
（That is object distance）Less than fEDistance apart from interarea 209, i.e. light emitting source 203 are located within all focuses of convex lens group.According to light
Principle is learned, light emitting source u forms the virtual focus of homonymy, distance of the virtual focus to interarea 209 after convex lens group（That is image distance）V,
Meet imaging formula with object distance and focal length f：
(1)
Since u is fixed, with the increase of f, the absolute value of v reduces, therefore the corresponding focus f of distal shaft lightECorresponding virtual image E away from
Farthest, the corresponding focus f of paraxial rays from interarea 209ACorresponding virtual image A is nearest apart from interarea, remaining is located at the light at middle part
The corresponding virtual image is between A and E.Light of the light sent out from light emitting source 203 after convex lens group is collected, is exactly from each
The line put on a virtual image point to interarea：The maximum virtual image E of image distance corresponds to the edge of convex lens group effective aperture, the light
23E is exactly lines of the E to convex lens group effective aperture edge；The virtual image A of image distance minimum corresponds to the close optical axis of convex lens group
Position, the line that light 23A is exactly A nearby to be put to convex lens group optical axis；Remaining light 23B, 23C and 23D are exactly successively
By the line of difference on the virtual image B, C, D and interarea.
Due to the presence of spherical aberration, it is possible that a kind of situation, is exactly that the angle of emergence of 23E is less than the angle of emergence of 23D, at this time
Light 23E and light 23D will intersect after propagating a distance.It is this to intersect the light path design for being highly detrimental to rear end.Cause
After intersection, it necessarily will appear the same position that two light are incident on rear end light path, and in light path on any optical device
A little can only all handle a light, such as the condenser lens of rear end, light 23E and 23D is incident on condenser lens simultaneously
Same point（Because the angle of emergence of light 23E is less than 23D）And if light 23D is focused on focus by this point, light
23E is just bound to defocus, if light 23E is focused on focus by this point, light 23D is just bound to defocus.
Therefore, it is necessary to the case where avoiding light from intersecting occurs, i.e. the angle of emergence of the light far from optical axis has to be larger than close
The angle of emergence of the light of optical axis.Only meeting such condition could enable the optical design of rear end to reach design object.
So this requires the positions of luminous point 203 to be in specific position.It can prove to certainly exist such position, it was demonstrated that as follows.
Formula (1) is seen, if u=fE, i.e. luminous point is located at the focus f of distal shaft lightEOn, such virtual image point E is located at infinity
Place, i.e., light 23E is directional light；And other light（Such as 23D）, since the image distance of virtual image point is not infinity,
The case where angle of divergence of its light is centainly more than 0, and there have been the angles of divergence of 23E less than light 23D at this time, that is, there is light
Intersect.
And on the other hand, when u level off to 0 when, v also levels off to 0, i.e. picture point A, B, C, D, E can level off to coincidence.More approach
In coincidence, i.e. D and E are closer, then 23E will necessarily be more than 23D, that is, are not in that intersect this be former by the geometry in Fig. 2 b to light
What reason determined.For the bigger light of incidence angle, the influence of spherical aberration is more notable.Therefore incidence angle（And light is sent out to luminous point
Collection angle）It is bigger, the intersection of light is more susceptible to wide-angle light, therefore collection angle is bigger, luminous point should just be put
Set the appearance for avoiding light from intersecting making u smaller closer to the place of convex lens group.
Fig. 2 b have inquired into the convex lens group being made of spherical convex lens 201 and 202 and the light that luminous point 203 is sent out have been collected
After emit beam 23A-23E the case where, as long as conclusion, which is luminous point 203, is placed on nearest focus fEWithin appropriate location, just
Emergent ray can be avoided to intersect.And it is the case where focusing after parallel rays incidence that following figure 2 c, which needs to inquire into,.A according to fig. 2
It is found that the parallel rays of different location incidence generates the focus of different location, these focuses concentrate on line segment fAfEOn.And it shines
Point 203 is located at fEWithin, this just determines that any parallel rays is impossible to directly focus on 203, and paraxial rays is just more
It can not possibly.
In the left side light path front end of convex lens group, another convex lens 205 is prevented, for paraxial parallel rays 241, if
There is no convex lens 205, then can be propagated along dotted line 24A in Fig. 2 c and focuses on focus fA, and the convergence for passing through convex lens 205 is made
Its focus can be shifted to an earlier date after, the convergence effect of convex lens 205 is stronger（Such as curvature is bigger）, then focus is just closer to convex lens
Group.Obviously it will appear a suitable convex lens 205 so that paraxial parallel rays 241 focuses on luminous point 203.
Based on above principle, the present invention proposes the technical solution of following laser light source.
The structural schematic diagram of laser light source proposed by the present invention is as shown in Figure 3.The laser light source includes for emitting laser
321 laser emitting source（It is not drawn into figure）, the first converging device 305 and the second converging device, wherein the first converging device and
Second converging device is all globe lens or globe lens group and has real focus.Specifically, the first converging device 305 is exactly spherical surface
Convex lens, the convex lens group that the second converging device is made of spherical convex lens 301 and 302.Certainly, the first converging device also may be used
To be lens group, the second converging device can also include spherical surface concavees lens, as long as the second converging device is integrally with real focus
It can.In order to express easily, the side towards the first converging device of the second converging device is known as its first side, backwards to the first convergence
The side of device is known as its second side.
According to optical knowledge above-mentioned, it will be appreciated that the parallel rays of optical axis different distance, it is incident in the second remittance
In first side port diameter of poly- device, focus will be formed in the second side of the second converging device, the parallel rays institute far from optical axis is right
It answers the focal length of focus to be less than the focal length of focus corresponding to the parallel rays of close optical axis, is incident in second the first side port of converging device
The parallel rays at diameter edge corresponds to the focus of the minimum focus of the second converging device the second side.
The laser light source further includes the fluorescent apparatus 303 being located on the second converging device the second side optical axis, the fluorescent apparatus
It is less than the minimum focus of the second converging device the second side to the distance of the interarea of the second converging device.According to optical knowledge above-mentioned
As long as it is found that fluorescent apparatus is located at suitable position, and arriving the distance of interarea（Object distance u）It is sufficiently small, so that it may to realize that fluorescence fills
The angle of emergence of the light that the angle for setting transmitting is A after the outgoing of the second converging device, is more than or equal to any launch angle and is less than A
Light by the second converging device outgoing after the angle of emergence.Wherein A is more than or equal to 50 degree.It can ensure that fluorescent apparatus is sent out in this way
Light 322 of the angle penetrated within A does not intersect after the collection of the second converging device, to ensure light path rear end
Optical design can preferably realize its design effect.And A is more than or equal to collected light energy within 50 degree at least 50 degree
Enough reach purpose of design, and at least 58% light energy can be collected within 50 degree, this is good enough in many applications.
The more big then collection efficiencies of certain A are higher, it is however noted that, the angle of emergence of the emergent light corresponding to the more big then A of A is bigger,
At this moment system can become huge.Therefore it is critically important the value of A reasonably to be selected in actual design.In practical operation, hair
A person of good sense has found that A selection 60-65 degree is proper.
On the other hand, according to optical knowledge above-mentioned it is found that by the rational design of the first converging device 305, first converges
Poly- device 305 and the combined optical system of the second converging device can make the parallel rays near optical axis be converged by first
The focus generated in the second converging device the second side after poly- device and the second converging device is located on fluorescent apparatus 303.Laser 321
Successively fluorescent apparatus is focused on after the first converging device and the second converging device and fluorescent apparatus 303 is made to produce near optical axis
Raw stimulated light 322.
Compared with the prior art shown in FIG. 1,301 He of two panels spherical convex lens has been used in the laser light source of the present embodiment
302 replace aspherical collecting lens group 101 and 102, can significantly reduce system cost in this way and significantly increase yield, together
When have no effect on back-end optical system design performance realization.Simultaneously by two panels spherical convex lens 301 and 302 in this present embodiment
Cannot as in Fig. 1 convex lens 101 light being collected into all is collimated as 102, but can dissipate, therefore entering in laser
The first converging device that end is used cooperatively is penetrated, the focus point of laser can be made to advance to fluorescent apparatus 303 so that excitation hot spot foot
It is enough small to realize ideal luminous intensity.
In the present embodiment, laser 321 is that the first converging device is incident near optical axis, this is relatively common sets
Meter.Actually this is not.Because even laser 321 is incident from the region far from optical axis, by being set to the first converging device
Laser 321 is focused on fluorescent apparatus by meter after the convergence of the first converging device and the second converging device effect.
In the present embodiment, it is preferred that further include the wavelength point between the first converging device and the second converging device
Electro-optical device 304, for guide in transmission mode laser 321 be incident in fluorescent apparatus 303 guided in a manner of reflection simultaneously by
Laser 322 is emitted.In this way can to avoid stimulated light 322 back to laser emitting source and caused by light loss.In the present embodiment,
Laser uses blue laser, and fluorescent apparatus absorbs blue light and stimulated emission sodium yellow.Wavelength light-dividing device is to be transmissive to indigo plant
Light reflects the light splitting optical filter of yellow light simultaneously（One kind of wavelength light-dividing device, naturally it is also possible to using the optics such as Amici prism member
Part）.Wavelength light-dividing device 304 between the first converging device and the light path of the second converging device, do not have in this way part by
Laser may not pass through the effect of the first converging device before outgoing, to ensure that the design object of back-end optical system can
More satisfactory realization.
It is of course also possible to use another mode guides the stimulated light and the light path of laser to separate.Wavelength light-dividing device
Laser light incident can also be guided in fluorescent apparatus in a manner of reflection while guiding stimulated light outgoing, such as wave in transmission mode
Long light-dividing device transmits the light splitting optical filter of yellow light using reflection blue light simultaneously, and laser is after the first converging device first by wavelength
Light-dividing device reflects, and then re-shoots in the second converging device, and fluorescence dress is focused on after the effect of the second converging device
It sets, and the stimulated light that fluorescent apparatus is sent out can be emitted with transmission peak wavelength light-dividing device.Those skilled in the art according to description
Can designed, designed go out this mode because principle is identical, the orientation that only element is placed needs to put again, therefore this hair
It is bright not repeat.
In fact, wavelength light-dividing device is a kind of preferred mode, other modes can also be used, such as in this reality
It applies in example, wavelength light-dividing device 304 can change the speculum of center opening into, and laser passes through center after the first converging device
Trepanning is incident in the second converging device, and stimulated light largely can be by anti-around centre bore after the collection of the second converging device
It penetrates mirror reflection and is emitted, only seldom can be transmitted from center opening and form certain light loss in part, this small light loss
Often acceptable.Design in this way be advantageous in that the laser for some residual being emitted from fluorescent apparatus can also be emitted from
And form mixed light outgoing.Further, speculum can also be bending, in this way in the same of reflection guiding stimulated light outgoing
When, light distribution can also be controlled.It is giving one example.Light-dividing device can also be small reflector, and laser is through too small anti-
Be incident in the second converging device after penetrating mirror reflection, and stimulated light after the collection of the second converging device from small reflector transmittance
Outgoing.In short, as long as light-dividing device is played the separated purpose of laser optical path and stimulated light light path.Even, can not have
Light-dividing device, stimulated light are returned along laser optical path, also can only have some losses, this light loss to be also on laser emitting source
Controllable.
In the present embodiment, it is preferred that further include the scattering device being located on laser optical path, for fluorescence dress will to be focused on
The laser light scattering set is at a hot spot, to avoid burning for local laser power fluorescent material caused by excessively high.It is most common
Scattering device is diffusion sheet, can also use other scattering devices certainly.This is the prior art, is not repeated herein.
Above-mentioned laser light source, the present invention also propose a kind of lamps and lanterns, and structural schematic diagram is as shown in fig. 4 a.The lamps and lanterns include
Above-mentioned laser light source further includes means for diverging 406 and collimator apparatus 407 positioned at laser light source light path rear end, laser light source
The light 422 sent out is incident in collimator apparatus after means for diverging dissipates and forms parallel light emergence.The purposes of means for diverging 406
It is expanded light beam, is then collimated using collimator apparatus 407, the collimation for the collimated light being formed by this way is higher.Preferably,
Means for diverging 406 is a piece of spherical surface concavees lens, and collimator apparatus 407 is a piece of aspherical convex lens.Whole system only uses
407 this piece of non-spherical lens so that cost is relatively low, and quality is more guaranteed.
Means for diverging and collimator apparatus match to realize that higher collimation, this itself belong to the prior art.Only this
Kind of technology is currently to be applied to being collimated again after the expanding of directional light, such as applied to light source as described in Figure 1, i.e. directional light is first
It is collimated using collimator apparatus after the expanding of means for diverging.The such means for diverging of laser light source cooperation and standard of the present invention
Straight device equally may be implemented to collimate well due to ensure that light does not intersect in design level.Another party
Face is inherently dissipated due to the emergent light 422 of the laser light source of the present invention, can bring preferably focusing uniform in this way
Property.Now it is explained.
As shown in fig. 4 a, means for diverging 406 is located at the light-emitting window of laser light source, this is by being filled to means for diverging and collimation
That sets can be designed so that the collimated light of outgoing reaches angle of divergence minimum, the highest state of collimation.And in order in practical application
Middle focusing（Even if it is changeable to obtain emergent light spot）, which further includes mobile device（It is not drawn into figure）, for making diverging fill
It sets to the direction far from laser light source light-emitting window and moves.Light path after movement is as shown in Figure 4 b.In the present embodiment, means for diverging
Effective aperture be more than laser light source light-emitting window hot spot bore.In light path in this way after means for diverging movement, due to swashing
The light that radiant is sent out is diverging, therefore light is incident in the covering surface bigger of means for diverging, the light bore of means for diverging
Bigger, that is, the position of means for diverging larger diameter can have an effect, and larger diameter in collimating status shown in figure 4a
Position do not play a role（Because without light incidence）.
If incident light is directional light, the movement of means for diverging then corresponds to the movement of virtual focus, which leaves
The focus of collimator apparatus, obtained emergent light are no longer substantially parallel naturally, and here it is the principles of focusing.But has a problem in that empty burnt
The hot spot that the emergent light of part diverging is formed by caused by the defocus of point is uneven, and the meeting dark surrounding in center is bright, or even is formed
Bright ring.Illuminating effect after focusing in this way is with regard to bad.
And in the present invention, the movement of means for diverging makes the light-receiving area of means for diverging also bigger itself, that is, sends out
The position in bulk for setting larger diameter can have an effect, and just while virtual focus moves, virtual focus has been drawn as line for this, i.e., different
Light there is no same focuses, but focal position is different.This is equivalent to the movement with means for diverging, and void originally is burnt
Point also exists, while producing new virtual focus, is equivalent to original point light source and becomes linear light source along optical axis.It is natural in this way
Also can to become larger by the angle of divergence of collimator apparatus, but the hot spot of emergent light is just much uniform.
Preferably, the position farthest apart from laser light source of means for diverging 406 is the full diverging of light filling that laser light source is sent out
The position of device effective aperture.The angle of divergence for the collimated light beam being emitted at this time is maximum, while if being further continued for moving, just will appear
Light is mapped to outside means for diverging and cannot collect and cause light loss.
On the basis of laser light source above-mentioned, the present invention also proposes a kind of light-emitting device, structural schematic diagram such as Fig. 5 institutes
Show.The light-emitting device includes two groups of laser light sources above-mentioned, hereon referred to as first laser light source and second laser light source.
The wherein laser emitting source of first laser light source（It is not drawn into figure）Transmitting is first laser 422, first laser
Blue laser 422, fluorescent apparatus is the first fluorescent apparatus 403, the stimulated light of the first fluorescent apparatus 403 transmitting be yellow light,
Green-yellow light, orange light, feux rouges or green light 424；The laser emitting source of second laser light source（It is not drawn into figure）Transmitting is second sharp
Light 421, second laser are purple or ultraviolet laser 421, and fluorescent apparatus is the second fluorescent apparatus 413, the second fluorescent apparatus hair
The stimulated light 423 penetrated is blue light.
First laser light source and second laser light source share the same wavelength light-dividing device 404, the wavelength light-dividing device 404
The wave band of reflection purple or ultraviolet laser, transmission blue light and reflection yellow light to feux rouges.First laser 422 transmits wavelength light splitting dress
It sets 404 and is incident in the first fluorescent apparatus 403, the stimulated light 424 of the first fluorescent apparatus 403 transmitting is by wavelength light-dividing device 404
Reflection；Second laser 421 reflects and is incident in the second fluorescent apparatus 413, the second fluorescence dress by the wavelength light-dividing device 404 simultaneously
The 423 transmission peak wavelength light-dividing device 404 of stimulated light of 413 transmittings is set, what the first fluorescent apparatus and the second fluorescent apparatus emitted is excited
Light 423 and 424 is combined into a branch of and is emitted at wavelength light-dividing device 404.
In the present embodiment, first laser light source and second laser light source share same first converging device 405, and first
Second converging device of laser light source is the convex lens group that spherical convex lens 401 and 402 form, and the second of second laser light source converges
Poly- device is the convex lens group that spherical convex lens 411 and 412 form.All it is blue light, wave using first laser and the second stimulated light
Long light-dividing device can be shared by first laser light source and second laser light source, and such structure is the compactest, and can
It is emitted the closing light of two kinds of fluorescence simultaneously.Such as it is emitted the closing light of blue light and yellow light simultaneously, it both can be with ejecting white light.
In another embodiment of the present invention, as a same reason, first laser light source and second laser light source share same
One wavelength light-dividing device, the wavelength light-dividing device transmit purple or ultraviolet laser, reflection blue light and transmission yellow light to feux rouges
Wave band, first laser are incident in the wavelength light-dividing device and are reflected into and penetrate in the first fluorescent apparatus, the transmitting of the first fluorescent apparatus
Stimulated light transmission peak wavelength light-dividing device, while second laser transmits the wavelength light-dividing device and is incident in the second fluorescent apparatus,
Second fluorescent apparatus transmitting stimulated light reflected by wavelength light-dividing device, the first fluorescent apparatus and the second fluorescent apparatus transmitting by
Laser is combined into a branch of and is emitted at wavelength light-dividing device.This is only by the position phase of first laser light source and second laser light source
It is reverse.
Lamps and lanterns shown in Fig. 4 a are based on a laser light source.As a same reason, the present invention also proposes another based on above-mentioned hair
The lamps and lanterns of electro-optical device, including above-mentioned light-emitting device further include means for diverging and collimation dress positioned at light-emitting device light path rear end
It sets, the light that light-emitting device is sent out is incident in collimator apparatus after means for diverging dissipates and forms parallel light emergence.Means for diverging
When positioned at close to the position of light-emitting device light-emitting window, the angle of divergence for the light beam being emitted from collimator apparatus is minimum, i.e., light beam reaches most
The state of collimation；The effective aperture of means for diverging is more than the hot spot bore of the light-emitting window of light-emitting device；Further include mobile device, uses
It is moved to the direction far from light-emitting device light-emitting window in making means for diverging.The means for diverging position farthest apart from light-emitting device is
The position for the full means for diverging effective aperture of light filling that light-emitting device is sent out.Shown in the operation principle and Fig. 4 a and Fig. 4 b of the lamps and lanterns
Lamps and lanterns it is identical, only change the laser light source in Fig. 4 a and Fig. 4 b into light-emitting device.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of laser light source, which is characterized in that including：
Laser emitting source for emitting laser, the first converging device and the second converging device, wherein the first converging device and
Two converging devices are all globe lens or globe lens group and have real focus, one towards the first converging device of the second converging device
Side is known as the first side, is known as the second side backwards to the side of the first converging device；
To the parallel rays of optical axis different distance, it is incident in the first side port diameter of the second converging device in the second converging device
The second side forms focus, and the focal length of focus corresponding to the parallel rays far from optical axis is less than corresponding to the parallel rays close to optical axis
The focal length of focus, the parallel rays for being incident in second converging device the first side port diameter edge correspond to the second converging device the second side
Minimum focus focus；
Further include the fluorescent apparatus being located on the second converging device the second side optical axis, master of the fluorescent apparatus to the second converging device
The distance in face is less than the minimum focus of the second converging device the second side, and the light that the angle of fluorescent apparatus transmitting is A is by the
The angle of emergence after the outgoing of two converging devices is more than or equal to light of any launch angle less than A and is emitted by the second converging device
The angle of emergence afterwards, wherein A are more than or equal to 50 degree；
First converging device and the combined optical system of the second converging device so that be incident in the directional light of the first converging device
The focus that line generates after the first converging device and the second converging device in the second converging device the second side is located at fluorescent apparatus
On；Laser successively focuses on fluorescent apparatus after the first converging device and the second converging device and fluorescent apparatus generation is made to be excited
Light.
2. laser light source according to claim 1, which is characterized in that further include positioned at the first converging device and the second convergence dress
Wavelength light-dividing device between setting, for guiding laser light incident to draw in a manner of reflection simultaneously in fluorescent apparatus in transmission mode
Lead stimulated light outgoing, or for guide laser light incident in fluorescent apparatus in a manner of reflection and meanwhile guide in transmission mode by
Laser emitting.
3. a kind of light-emitting device, which is characterized in that including two groups of laser light sources according to claim 2, first laser light
Source and second laser light source；
Wherein the laser emitting source transmitting of first laser light source is first laser, and first laser is blue laser, fluorescence dress
It is the first fluorescent apparatus to set, and the stimulated light of the first fluorescent apparatus transmitting is yellow light, green-yellow light, orange light, feux rouges or green light；Second swashs
The laser emitting source transmitting of radiant is second laser, and second laser is purple or ultraviolet laser, and fluorescent apparatus is second
The stimulated light of fluorescent apparatus, the transmitting of the second fluorescent apparatus is blue light；
First laser light source and second laser light source share the same wavelength light-dividing device, the wavelength light-dividing device transmit purple or
Ultraviolet laser, reflection blue light and yellow light is transmitted to the wave band of feux rouges, first laser is incident in the wavelength light-dividing device and reflected
It is incident in the first fluorescent apparatus, the stimulated light transmission peak wavelength light-dividing device of the first fluorescent apparatus transmitting, while second laser transmits
The wavelength light-dividing device is simultaneously incident in the second fluorescent apparatus, and the stimulated light of the second fluorescent apparatus transmitting is anti-by wavelength light-dividing device
It penetrates, the stimulated light of the first fluorescent apparatus and the transmitting of the second fluorescent apparatus is combined into a branch of and is emitted at wavelength light-dividing device；Alternatively,
First laser light source and second laser light source share the same wavelength light-dividing device, the wavelength light-dividing device reflect purple or
Ultraviolet laser, transmission blue light and yellow light is reflected to the wave band of feux rouges, first laser transmits the wavelength light-dividing device and be incident in the
The stimulated light of one fluorescent apparatus, the transmitting of the first fluorescent apparatus is reflected by wavelength light-dividing device, while second laser is by the wavelength point
Electro-optical device reflects and is incident in the second fluorescent apparatus, the stimulated light transmission peak wavelength light-dividing device of the second fluorescent apparatus transmitting, and first
Fluorescent apparatus and the stimulated light of the second fluorescent apparatus transmitting are combined into a branch of and are emitted at wavelength light-dividing device.
4. a kind of lamps and lanterns, which is characterized in that further include being located at laser light including laser light source according to claim 1 or 2
The means for diverging and collimator apparatus of source light path rear end, the light that laser light source is sent out are incident in collimation dress after means for diverging dissipates
It sets and forms parallel light emergence.
5. lamps and lanterns according to claim 4, which is characterized in that the means for diverging is located at close to laser light source light-emitting window
When position, the angle of divergence for the light beam being emitted from collimator apparatus is minimum, i.e., light beam reaches the state most collimated；Means for diverging it is effective
Bore is more than the hot spot bore of the light-emitting window of laser light source；Further include mobile device, for making means for diverging to far from laser light
It moves in the direction of source light-emitting window.
6. lamps and lanterns according to claim 4, which is characterized in that the means for diverging is spherical surface concavees lens.
7. lamps and lanterns according to claim 5, which is characterized in that the means for diverging position farthest apart from laser light source, is sharp
The position for the full means for diverging effective aperture of light filling that radiant is sent out.
8. a kind of lamps and lanterns, which is characterized in that further include being located at light-emitting device including light-emitting device according to claim 3
The means for diverging and collimator apparatus of light path rear end, the light that light-emitting device is sent out are incident in collimator apparatus after means for diverging dissipates
And form parallel light emergence.
9. lamps and lanterns according to claim 8, which is characterized in that the means for diverging is located at close to light-emitting device light-emitting window
When position, the angle of divergence for the light beam being emitted from collimator apparatus is minimum, i.e., light beam reaches the state most collimated；Means for diverging it is effective
Bore is more than the hot spot bore of the light-emitting window of light-emitting device；Further include mobile device, for making means for diverging to far from the dress that shines
Set the direction movement of light-emitting window.
10. lamps and lanterns according to claim 9, which is characterized in that the means for diverging position farthest apart from light-emitting device is hair
The position for the full means for diverging effective aperture of light filling that electro-optical device is sent out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810295111.8A CN108533980B (en) | 2018-03-30 | 2018-03-30 | Laser light source, light emitting device and lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810295111.8A CN108533980B (en) | 2018-03-30 | 2018-03-30 | Laser light source, light emitting device and lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108533980A true CN108533980A (en) | 2018-09-14 |
| CN108533980B CN108533980B (en) | 2020-06-02 |
Family
ID=63482417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810295111.8A Active CN108533980B (en) | 2018-03-30 | 2018-03-30 | Laser light source, light emitting device and lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108533980B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018120111A (en) * | 2017-01-26 | 2018-08-02 | セイコーエプソン株式会社 | Lighting system and projector |
| WO2020110464A1 (en) | 2018-11-29 | 2020-06-04 | Ricoh Company, Ltd. | Light source optical system, light source device, and image projection apparatus |
| CN113759649A (en) * | 2020-06-04 | 2021-12-07 | 精工爱普生株式会社 | Illumination device and projector |
| CN115248527A (en) * | 2021-04-26 | 2022-10-28 | 成都极米科技股份有限公司 | Light source device and projection equipment |
| EP4198629A1 (en) * | 2019-03-18 | 2023-06-21 | Ricoh Company, Ltd. | Light source optical system, light source device, and image projection apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1841238A2 (en) * | 2002-10-16 | 2007-10-03 | Eastman Kodak Company | Broad gamut color display apparatus using an electromechanical grating device |
| US20120242912A1 (en) * | 2011-03-23 | 2012-09-27 | Panasonic Corporation | Light source apparatus and image display apparatus using the same |
| CN104482504A (en) * | 2014-11-29 | 2015-04-01 | 杨毅 | Light-emitting device and illumination device |
| CN107272310A (en) * | 2016-04-06 | 2017-10-20 | 上海蓝湖照明科技有限公司 | Light-emitting device and relevant projecting system and illuminator |
| CN107632487A (en) * | 2013-04-20 | 2018-01-26 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and relevant source system |
-
2018
- 2018-03-30 CN CN201810295111.8A patent/CN108533980B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1841238A2 (en) * | 2002-10-16 | 2007-10-03 | Eastman Kodak Company | Broad gamut color display apparatus using an electromechanical grating device |
| US20120242912A1 (en) * | 2011-03-23 | 2012-09-27 | Panasonic Corporation | Light source apparatus and image display apparatus using the same |
| CN107632487A (en) * | 2013-04-20 | 2018-01-26 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and relevant source system |
| CN104482504A (en) * | 2014-11-29 | 2015-04-01 | 杨毅 | Light-emitting device and illumination device |
| CN107272310A (en) * | 2016-04-06 | 2017-10-20 | 上海蓝湖照明科技有限公司 | Light-emitting device and relevant projecting system and illuminator |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018120111A (en) * | 2017-01-26 | 2018-08-02 | セイコーエプソン株式会社 | Lighting system and projector |
| EP3887904A4 (en) * | 2018-11-29 | 2022-06-01 | Ricoh Company, Ltd. | Light source optical system, light source device, and image projection apparatus |
| JP2020086261A (en) * | 2018-11-29 | 2020-06-04 | 株式会社リコー | Light source optical system, light source device and image projection |
| CN113168082A (en) * | 2018-11-29 | 2021-07-23 | 株式会社理光 | Light source optical system, light source device and image projection device |
| JP7031567B2 (en) | 2018-11-29 | 2022-03-08 | 株式会社リコー | Light source optical system, light source device and image projection device |
| WO2020110464A1 (en) | 2018-11-29 | 2020-06-04 | Ricoh Company, Ltd. | Light source optical system, light source device, and image projection apparatus |
| JP2022084619A (en) * | 2018-11-29 | 2022-06-07 | 株式会社リコー | Light source optical system, light source device and image projection |
| CN113168082B (en) * | 2018-11-29 | 2022-09-23 | 株式会社理光 | Light source optical system, light source device and image projection device |
| US11640106B2 (en) | 2018-11-29 | 2023-05-02 | Ricoh Company, Ltd. | Light source optical system, light source device, and image projection apparatus |
| EP4198629A1 (en) * | 2019-03-18 | 2023-06-21 | Ricoh Company, Ltd. | Light source optical system, light source device, and image projection apparatus |
| CN113759649A (en) * | 2020-06-04 | 2021-12-07 | 精工爱普生株式会社 | Illumination device and projector |
| US11614680B2 (en) | 2020-06-04 | 2023-03-28 | Seiko Epson Corporation | Illuminator and projector |
| CN115248527A (en) * | 2021-04-26 | 2022-10-28 | 成都极米科技股份有限公司 | Light source device and projection equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108533980B (en) | 2020-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108533980A (en) | Laser light source, light-emitting device and lamps and lanterns | |
| CN105158913B (en) | Laser light source, wavelength convert light source, light combination light source and optical projection system | |
| US7843642B2 (en) | Systems and methods for providing compact illumination in head mounted displays | |
| TWI470171B (en) | Colour-tunable light source unit with phosphor element | |
| CN100414346C (en) | Illuminating unit with reflective collimator and image projection system including the same | |
| CN207457687U (en) | Light-source system and projector equipment | |
| JP2016522986A (en) | Light emitting device and related light source system | |
| JP5107341B2 (en) | Planar illumination device and liquid crystal display device using the same | |
| CN107908011B (en) | A kind of attenuator of variable focal point, laser light source and projection display apparatus | |
| CN106195929A (en) | Laser light source module | |
| US20070019912A1 (en) | Illuminateur laser | |
| US11635604B2 (en) | Luminous flux collector for directing light into a light-diffusing fiber | |
| JP2017111287A (en) | Projection device | |
| JP6536724B1 (en) | Light source device, projector | |
| CN109557754A (en) | Light-source system and projection device | |
| CN109031871A (en) | A kind of laser light source and laser-projector | |
| KR100453040B1 (en) | Collimating lens, collimating system and image displaying apparatus employing the same | |
| CN102057214B (en) | Light output device and method | |
| KR100565075B1 (en) | Illuminating unit and projection type image display apparatus employing the same | |
| CN106662305A (en) | Irradiation device comprising a pump radiation source | |
| CN108826229A (en) | A kind of focusing lamp lens group and corresponding lighting system | |
| US10907774B2 (en) | Light source unit | |
| CN207945506U (en) | Laser light source, light-emitting device and lamps and lanterns | |
| WO2019154007A1 (en) | Lamp | |
| CN208566571U (en) | A kind of focusing lamp lens group and corresponding lighting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |