A kind of projection light source system of non co axial
Technical field
The utility model relates to lighting source technical field more particularly to a kind of projection light source systems of non co axial.
Background technique
The light source of optical projection system is broadly divided into three classes, is bulb source, LED light source and laser light source respectively.Laser light
Source is projection light source in recent years of greatest concern, and laser light source has the characteristics that the alternative big and spectral luminance factor of wavelength is high, can be with
The color domain coverage ratio for synthesizing 90% or more nature color seen in human eye, realizes perfect color rendition.Meanwhile laser light source is just
There are the brightness and longer service life of superelevation, greatly reduces the maintenance cost in later period.
Currently used projection light source system generates radiofluorescence using exciting light irradiation fluorescent wheel, usually radiates glimmering
Light is overlapped with the optical path of exciting light, needs to separate the optical path of radiofluorescence and exciting light using components such as dichroscopes
Radiofluorescence could be exported to synthesis white light, so that the optical path of projection light source system is complicated, component is more, occupancy volume is big, production
It is at high cost.
Utility model content
Technical problem to be solved in the utility model and the technical assignment of proposition are improved to the prior art, are provided
A kind of projection light source system of non co axial, the projection light source system solved in current technology use the components such as dichroscope by spoke
The optical path for penetrating fluorescence and exciting light separates, and optical path is complicated, component is more, the problem that system bulk is big, at high cost.
In order to solve the above technical problems, the technical solution of the utility model is:
A kind of projection light source system of non co axial, including light source, fluorescent wheel and positioned at convergence shaping eyeglass between the two
Group, the exciting light that the light source issues are penetrated after the optical axis direction directive convergence shaping lens set to favour convergence shaping lens set
It is converged to after exciting the radiofluorescence directive of generation to converge shaping lens set onto fluorescent wheel, on fluorescent wheel different from exciting light
It is exported on optical path direction.The projection light source system of non co axial described in the utility model directly using convergence shaping lens set by
The optical path of exciting light and radiofluorescence separates, and no longer needs to effectively reduce constituent system components using dichroscope, reduces system
Volume is occupied, system cost is reduced.The radiofluorescence that generation is excited on fluorescent wheel is lambert's body light source, is had in 180 degree direction
Distribution, the convergence shaping lens set that the exciting light of radiofluorescence directive incidence is passed through, radiofluorescence is by converging shaping mirror
Exit direction after the convergence of piece group not in the same direction, is realized with the exciting light for favouring convergence shaping lens set optical axis
Optical path separates, and can directly export the radiofluorescence light combination being emitted from convergence shaping lens set, without being further added by realization point
The component of light, so that system structure is more compact, system light path component is few, reduces the loss of light transmission process, and it is defeated to improve light source
Brightness out.
Further, the convergence shaping lens set open up out for exciting light directly through through-hole, the side of exciting light
Tropism is preferable, to collimate directional light, avoids exciting light from going out by the transmission of convergence shaping lens set, reduces the loss of exciting light,
The power for the exciting light being radiated on fluorescent wheel is improved, the power for the radiofluorescence that excitation generates is improved.
Further, the radiofluorescence of generation is excited to converge to convergence shaping by convergence shaping lens set on the fluorescent wheel
The optical axis direction of lens set, the convergence shaping effect along the radiofluorescence of optical axis direction outgoing are good, it is easier to control outgoing
The directionality of radiofluorescence improves the quality of final light source output.
Further, the exciting light that the light source issues transmitted through after convergence shaping lens set to favour fluorescent wheel
The direction of axial rotary is irradiated on fluorescent wheel, it is ensured that the optical path after radiofluorescence convergence can more sufficiently divide with the optical path of exciting light
It opens.
Further, Abbe number≤30 for converging at least one eyeglass in shaping lens set, converge shaping eyeglass
Group has better chromatic dispersion effects, and capable of making the light of different wave length, optical path separated angle is more when through shaping lens set is converged
Greatly, so that preferably the optical path of laser and fluorescence is separated.
Further, it is circumferentially provided on the fluorescent wheel several for exciting the spoke for generating different colours
The fluorescent powder area of fluorescence is penetrated, and is also provided with the excitation transmitance region with fluorescent powder area with circle distribution on the fluorescent wheel
Or exciting light echo area.The different radiofluorescences generated are excited with the exciting light gone out by exciting light transmissive region or by swashing
The exciting light that luminous echo area is launched carries out light mixing output, improves the luminous flux of output light, keeps projection display color more preferable, color
Domain is big, and image reproducing is bright-colored.
Further, the excitation transmitance region is the white glass or diffusion sheet being arranged on fluorescent wheel, eliminates speckle.
Further, the exciting light echo area to exciting light carry out diffusing reflection, exciting light after being reflected also in
The similar lambert's body light source of radiofluorescence, the exciting light of reflection are exported after being accumulated the convergence of shaping lens set, can be effectively eliminated scattered
Spot improves drop shadow effect.
Further, the exciting light echo area is the reflecting mirror for being parallel to fluorescent wheel in the back side setting of fluorescent wheel
Piece.
It further, further include light-integrating subassembly, the light-integrating subassembly includes that the light combination reflecting mirror, the light beam that set gradually are whole
Shape mould group, colour filter colour wheel and optical wand with fluorescent wheel synchronous rotary, the radiofluorescence directive converged out from convergence shaping lens set
Light combination output is successively carried out by beam shaping mould group, colour filter colour wheel and optical wand again after light combination reflecting mirror, light-integrating subassembly structure is tight
It gathers, occupancy is small in size, and output can make color more bright-coloured after colour filter colour wheel filters light, and optical wand carries out output beam even
Light improves the uniformity of output light.
Compared with prior art, the utility model advantage is:
The projection light source system of non co axial described in the utility model, it is simple and compact for structure, it eliminates the need for being divided
Dichroscope effectively reduces constituent system components, reduces system cost, reduces system and occupies volume, so that system structure is more
Step up to gather, reduce the loss of light transmission process, improves light source output brightness.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the projection light source system embodiment one of non co axial;
Fig. 2 is the fluorescent wheel structural schematic diagram of the projection light source system embodiment one of non co axial;
Fig. 3 is the structural schematic diagram of the projection light source system embodiment two of non co axial;
Fig. 4 is the fluorescent wheel structural schematic diagram of the projection light source system embodiment two of non co axial;
Fig. 5 is the second way structural schematic diagram of the projection light source system embodiment two of non co axial;
Fig. 6 is the convergence shaping lens set structural schematic diagram of the projection light source system embodiment three of non co axial.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
A kind of projection light source system of non co axial disclosed in the utility model embodiment is cancelled and uses dichroscope, optical path
Structure is simpler, compact, effectively reduces system bulk, reduces cost of manufacture.
A kind of projection light source system of non co axial, mainly by light source 1, fluorescent wheel 2 and positioned at convergence shaping between the two
The composition of lens set 3, the exciting light that the light source 1 issues are converged with the optical axis direction directive for favouring convergence shaping lens set 3
It is mapped to after shaping lens set 3 on fluorescent wheel 2, is converged after exciting the radiofluorescence directive of generation to converge shaping lens set 3 on fluorescent wheel 2
Gather to exporting on the optical path direction different from exciting light.The radiofluorescence that generation is excited on fluorescent wheel is lambert's body light source, 180
Degree direction is all distributed, outgoing of the radiofluorescence launched on a large scale in the radiofluorescence after convergence shaping lens set convergence
Direction is approximately along the optical axis for converging shaping lens set, so as to make the optical path for the radiofluorescence being emitted from convergence shaping lens set
It is separated with the optical path of exciting light, without using dichroscope to be achieved that, the optical path by radiofluorescence and exciting light is separated,
The number of components of reduction system reduces volume.
The preferred lesser eyeglass of abbe number Vd of shaping lens set 3 is converged, is able to achieve more preferably to converge shaping lens set 3
Chromatic dispersion effects, the angle that the light of different colours is deflected in transmission is different, enable radiofluorescence emitting light path more preferably with
The optical path of exciting light separates, so that the angle that both the emitting light path of radiofluorescence and the optical path of exciting light separate is bigger, rear
White light can be carried out even light by diffusion sheet and optical wand etc. by end, be remerged as same coaxial optical path.
Embodiment one
As depicted in figs. 1 and 2, the projection light source system of non co axial mainly includes light source 1, fluorescent wheel 2, convergence shaping eyeglass
Group 3 and light-integrating subassembly;
Light source 1 uses blue laser source, and to collimate directional light, good directionality is easy to carry out convergence shaping in the optical path, controls
System is comparatively easy, and converges the preferred aspherical lens of shaping lens set 3, the more effective optical path for utilizing radiofluorescence and exciting light
It separates;
Light source 1 issues the exciting light of blue laser, and exciting light is saturating after converging the convergence shaping operation of shaping lens set 3
It is mapped on fluorescent wheel 2, several radiofluorescences for exciting generation different colours is circumferentially provided on fluorescent wheel 2
Fluorescent powder area 21, and the excitation transmitance region 22 with fluorescent powder area 21 with circle distribution is also provided on the fluorescent wheel 2,
The radiofluorescence that fluorescent powder area 21 generates includes red, green, can also there is yellow, can increase brightness, excites transmitance region 22
The white glass or diffusion sheet that can be arranged on fluorescent wheel 2 eliminate speckle;
Fluorescent wheel 2 persistently rotates, and the exciting light being radiated on fluorescent wheel 2 is successively and what is recycled is irradiated to generation different colours
The fluorescent powder area 21 of radiofluorescence and excitation transmitance region 22, it is glimmering to generate radiation for excitation when exciting light is irradiated to fluorescent powder area 21
Light, radiofluorescence are dissipated to all directions, and radiofluorescence directive converges the part of shaping lens set 3 then by convergence shaping lens set
It is projected after 3 convergence shapings along a direction, the light of convergence shaping lens set 3 is favoured due to exciting light shot from the light source
Axis direction directive convergence shaping lens set 3 after be mapped on fluorescent wheel 2 so that radiofluorescence convergence shaping injection optical path direction with
Not in the same direction, optical path realization is staggered the optical path direction of incident exciting light, no setting is required dichroscope, makes system knot
Structure is more compact, it is preferred that excited on the fluorescent wheel 2 radiofluorescence of generation by convergence shaping lens set 3 converge to convergence it is whole
The optical axis direction of shape lens set 3;When exciting light is irradiated to excitation transmitance region 22, exciting light passes through glimmering from excitation transmitance region 22
Halo 2 is projected to the rear side of fluorescent wheel 2, is turned back component in the rear side setting optical path of fluorescent wheel 2, and optical path component of turning back includes reflective
The components such as mirror, condenser lens, the optical path for passing through the exciting light of fluorescent wheel 2 are turned back, so that the exciting light and spoke of this part
It penetrates fluorescence and leads to light-integrating subassembly progress light combination output;
In the present embodiment, light-integrating subassembly includes the light combination reflecting mirror 41 set gradually, beam shaping mould group 42 and fluorescence
The colour filter colour wheel 43 and optical wand 44 for taking turns synchronous rotary, the radiofluorescence directive light combination reflection converged out from convergence shaping lens set 3
Mirror 41, and pass through from excitation transmitance region 22 exciting light also directive light combination under the action of optical path turns back component of fluorescent wheel 2
Reflecting mirror 41, then radiofluorescence and exciting light are successively carried out by beam shaping mould group 42, colour filter colour wheel 43 and optical wand 44 again
Light combination output, beam shaping mould group 42 are focused shaping to radiofluorescence and exciting light, and then colour filter colour wheel 43 is again to various
The radiofluorescence and exciting light of color are filtered, and last optical wand carries out even light to output beam.
In the present embodiment, Abbe number≤30 for converging at least one eyeglass in shaping lens set, so as to preferably
The optical path of laser and fluorescence is separated.Because current system three primary colours dominant wavelength is more dispersed, the wave-length coverage interval of three kinds of colors
About 50nm, if blue light dominant wavelength concentrates on 450~460nm, green light dominant wavelength concentrates on 510~570nm, and feux rouges dominant wavelength is concentrated
Three coloured light can be preferably separated in 620~680nm, therefore using the good convergence shaping lens set of chromatic dispersion effects, it can more preferable
Separated laser and fluorescence optical path.
Embodiment two
As shown in Figure 3 and Figure 4, the difference from embodiment 1 is that be provided with fluorescent powder area 21 with circle on fluorescent wheel 2
The exciting light echo area 23 of all distributions, exciting light echo area 23 replace excitation transmitance region 22, and exciting light echo area 23 is to sharp
It shines and carries out irreflexive diffusing reflection layer, as shown in figure 4, exciting light echo area 23, which can be, is located at fluorescent wheel with fluorescent powder area 21
The same side of matrix can be and form exciting light echo area 23 by modes such as plated films;As shown in figure 5, exciting light echo area 23
It can also be that the reflecting optics for being parallel to fluorescent wheel in the back side setting of fluorescent wheel, back side, that is, fluorescent wheel of fluorescent wheel are not glimmering
The side in the area Guang Fen, exciting light are also in lambert's body light source after being reflected, and the excitation light of reflection is converged to convergence shaping lens set 3
It is exported after poly- shaping, the optical axis direction directive convergence of convergence shaping lens set 3 is favoured due to exciting light shot from the light source
Shaping lens set 3, so that the exciting light of reflection is converging in another direction after converging shaping lens set 3, it is glimmering with radiating
The direction of light convergence outgoing is identical, and the optical path side in the convergence emitting light path direction of the exciting light reflected and incident exciting light
To in the same direction, no setting is required, dichroscope realizes separating for optical path, the exciting light and radiofluorescence of reflection
In all light combination reflecting mirror 41 of directive light-integrating subassembly after converging shaping lens set 3, beam shaping mould group is then passed sequentially through
42, colour filter colour wheel 43 and optical wand 44 carry out light combination output.
Embodiment three
As shown in fig. 6, can also be opened up out in convergence shaping lens set 3 on the basis of embodiment one and embodiment two
For directive fluorescent wheel exciting light directly through through-hole 31, that is, enter 2 exciting light of directive fluorescent wheel and require no convergence shaping mirror
The convergence shaping operation direct irradiation fluorescent wheel 2 of piece group 3, because the blue laser source that light source 1 uses is collimation directional light, direction
Property it is good, it is ensured that irradiation fluorescent powder area when generate radiofluorescence launching efficiency, the light into 2 exciting light of directive fluorescent wheel can be made
Road and the optical path of the radiofluorescence converged out by convergence shaping lens set 3 preferably separate, and in such scheme, converge shaping eyeglass
Aspherical lens or spheric glass can be used in the eyeglass of group 3.
Example IV
On the basis of embodiment one and embodiment two, light source 1 issue exciting light transmitted through convergence shaping lens set 3
It is irradiated on fluorescent wheel 2 with the direction for favouring 2 axial rotary of fluorescent wheel afterwards, radiofluorescence can be made by convergence shaping eyeglass
The optical path direction of the better incident exciting light in convergence emitting light path direction after group 3 separates;Converge the optical axis of shaping lens set 3
Can along the axial rotary of fluorescent wheel 2, or convergence shaping lens set 3 inclined light shaft in the axial rotary of fluorescent wheel 2, energy
Preferably the convergence emitting light path direction of radiofluorescence and the optical path direction of incident exciting light are separated.
Above are merely preferred embodiments of the utility model, it is noted that above-mentioned preferred embodiment should not regard
For limitations of the present invention, the protection scope of the utility model should be defined by the scope defined by the claims..For
For those skilled in the art, without departing from the spirit and scope of the utility model, it can also make several
Improvements and modifications, these improvements and modifications also should be regarded as the protection scope of the utility model.