CN109164589A - A kind of light splitting Multiplexing apparatus and light-source system - Google Patents
A kind of light splitting Multiplexing apparatus and light-source system Download PDFInfo
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- CN109164589A CN109164589A CN201811088635.6A CN201811088635A CN109164589A CN 109164589 A CN109164589 A CN 109164589A CN 201811088635 A CN201811088635 A CN 201811088635A CN 109164589 A CN109164589 A CN 109164589A
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- light
- beam splitter
- polarised
- subregion
- multiplexing apparatus
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
Abstract
The present invention provides a kind of light splitting Multiplexing apparatus and light-source system, it include: beam splitter, Wavelength converter and polarization conversion device, wherein, the first polarised light that beam splitter is used to make to be incident to the beam splitter is transmitted or is reflected through beam splitter, using the incident light as Wavelength converter；Wavelength converter includes at least one first subregion and at least one second subregion, wherein, first polarised light generates stimulated light after the first subregion, and stimulated light is reflected or transmitted through beam splitter to carry out light combination, and the second subregion is used to make to be incident to polarized light transmission or the reflection of the second subregion；Polarization conversion device, polarised light through the second subregion transmission or reflection is converted into the second polarised light through the polarization conversion device, second polarised light is transmitted through beam splitter or is reflected to carry out light combination, wherein the second polarised light has the polarization direction different from the first polarised light.Light splitting Multiplexing apparatus of the invention can reduce light source volume, realize the heterogeneous light output of timing.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of light splitting Multiplexing apparatus and light-source system.
Background technique
Laser is a kind of high brightness, high directivity, issues the light source of monochromatic coherent light beam, due to the plurality of advantages of laser,
Gradually it is used as light source applications in projection display technique field in recent years.In the field of display, it for the realization of white light, uses
High-power blue-ray LED or blue light LD excite fluorescent material, and the combination for making it be excited to obtain green, yellow, emitting red light is closed
It is a kind of current scheme for realizing white light at white light, the program is simple, cheap gradually by researcher's in the industry due to it
Concern.
Current laser projection shows in product that laser source system largely uses LASER Excited Fluorescence body illumination mode
Realize the illumination of optical projection system, specific implementation are as follows: when light-source system mainly passes through fluorescent wheel and its light channel structure acquisition
The light output of sequence, obtains white light, obtains other green-yellow lights excited on blue light, with disk body using the notch on fluorescent wheel and is combined into
White light is used to optical projection system.
However the light source for being usually used in laser projection (such as one chip laser projection) is mostly using dichroscope at present
Realize the transmission to blue light, the reflection to stimulated light；Or light combination is realized in the reflection to blue light, the transmission of stimulated light in turn.This
The technical solution of sample has the disadvantages that firstly, since blu-ray reflection leads to the technical side after a week with stimulated light progress light combination
The defect that blue light existing for case is inefficient and light source volume is excessive；Secondly as needing in blue light paths using diffusion
Piece dissipation spot, optical path is longer so that collection efficiency reduces, and causes the energy loss of the part optical path bigger, while the spot that dissipates
Effect is general；Finally, the optical path is inconvenient to increase two-color laser, such as red laser, if forcing to be added, can further make
Become larger at the volume of light source.
Therefore, presence in view of the above problems, the present invention propose a kind of new light splitting Multiplexing apparatus and light-source system.
Summary of the invention
In order to solve the above-mentioned technical problem, one aspect of the present invention provides a kind of light splitting Multiplexing apparatus, comprising: beam splitter,
Wavelength converter and polarization conversion device, wherein
The beam splitter, for transmiting the first polarised light for being incident to the beam splitter through the beam splitter or
Person's reflection, using the incident light as the Wavelength converter；
The Wavelength converter, including at least one first subregion and at least one second subregion, wherein described first
Polarised light generates stimulated light after first subregion, and the stimulated light is reflected through the beam splitter or transmitted to be closed
Light, second subregion are used to make to be incident to polarized light transmission or the reflection of second subregion；
The polarization conversion device, the polarised light through the second subregion transmission or reflection turn through the polarization conversion device
Change the second polarised light into, second polarised light is transmitted or reflected through the beam splitter to carry out light combination, wherein described
Two polarised lights have the polarization direction different from first polarised light.
Illustratively, the light splitting Multiplexing apparatus further includes reflecting element, and the polarization conversion device setting is described anti-
It penetrates between element and the Wavelength converter, first polarised light through second subregion transmission is through the polarization conversion
Element is converted to circularly polarized light, the circularly polarized light by the reflecting element be reflected back the polarization conversion device be converted to it is described
Second polarised light.
Illustratively, second polarised light and the stimulated light are transmitted through the beam splitter to carry out light combination, alternatively,
Second polarised light and the stimulated light are reflected through the beam splitter to carry out light combination.
Illustratively, second subregion of the Wavelength converter is echo area, the polarization conversion device setting
Between the beam splitter and the Wavelength converter.
Illustratively, the echo area is diffusing reflection area, to eliminate coherence.
Illustratively, circle is converted to through the polarization conversion device through first polarised light that the beam splitter reflects
Polarised light, the circularly polarized light are reflected back after the polarization conversion device is converted to second polarised light through the echo area and pass through
The beam splitter transmission or reflection is to carry out light combination.
Illustratively, circle is converted to through the polarization conversion device through first polarised light that the beam splitter reflects
Polarised light, the circularly polarized light be incident to first subregion generate the stimulated light and reflex to the beam splitter transmission or
Reflection is to carry out light combination.
Illustratively, the beam splitter is obliquely installed, so as to be incident to the light of the first polarised light of the beam splitter
Angle between axis and the plane of incidence is 45 °.
Illustratively, the Wavelength converter includes substrate, and forms first subregion on the substrate
Interior wavelength conversion material.
Illustratively, the Wavelength converter includes at least two first subregions, at different described first point
Setting has the wavelength conversion material of different switching wavelength in area.
Illustratively, the wavelength conversion material with different switching wavelength includes yellow light transition material, green light
Transition material and feux rouges transition material.
Illustratively, second subregion is the diffusing scattering region of transmission region or notch or light transmission, so that incident
To the polarized light transmission of second subregion.
Illustratively, second subregion is the notch being arranged on the substrate or is arranged on the substrate saturating
Photosphere.
Illustratively, the Wavelength converter further include:
Driving device, for driving the Wavelength converter to rotate according to the scheduled period；
The driving device is electrically connected to external power supply by connecting line, the connecting line.
Illustratively, the light splitting Multiplexing apparatus further include:
First shaping lens are arranged between the beam splitter and the Wavelength converter, to the light splitting member
The emergent light of part, which focuses, simultaneously collimates the stimulated light and second polarised light.
Illustratively, the light splitting Multiplexing apparatus further includes the second shaping lens, and second shaping lens are arranged in institute
State between polarization conversion device and the Wavelength converter, with to through second subregion transmit or reflect polarised light into
Row collimation simultaneously assembles the polarised light being emitted through the polarization conversion device.
Illustratively, the beam splitter includes polarization spectroscope；And/or the polarization conversion device include four/
One wave plate.
Illustratively, the first polarised light is the polarised light with linear polarization or approximate linear polarization.
Further aspect of the present invention also provides a kind of light-source system, and the light-source system includes:
First light source, the incident light for emitting the first polarised light, as the light splitting Multiplexing apparatus；
Light splitting Multiplexing apparatus above-mentioned.
Illustratively, the light-source system further includes the optical path shaping being arranged between the first light source and beam splitter
Element, for carrying out collimating and correcting to first polarised light.
Illustratively, the light-source system further includes diffusion sheet, is arranged between beam splitter and the first light source, is used
In the processing for eliminate to first polarised light coherence.
Illustratively, the light-source system further includes second light source, and the second light source is set respectively with the first light source
Set the beam splitter two sides or be arranged in the beam splitter the same side different location, second light source hair
The light penetrated is reflected through the beam splitter or is transmitted to carry out light combination.
Illustratively, the first light source is laser light source, is had described in linear polarization or approximate linear polarization for emitting
First polarised light.
In conclusion light splitting Multiplexing apparatus of the invention utilizes the polarization characteristic of light source, realized using beam splitter to the
The selective transmission of one polarised light and reflection, while cooperating revolving Wavelength converter and polarization conversion device, when realization
The heterogeneous light output of sequence, to obtain required sequential light；Also, light splitting Multiplexing apparatus of the invention can reduce light source
Volume promotes the efficiency of optical path；And speckle can also be mitigated.
Detailed description of the invention
The embodiment of the present invention is described in more detail in conjunction with the accompanying drawings, the above and other purposes of the present invention,
Feature and advantage will be apparent.Attached drawing is used to provide to further understand the embodiment of the present invention, and constitutes explanation
A part of book, is used to explain the present invention together with the embodiment of the present invention, is not construed as limiting the invention.In the accompanying drawings,
Identical reference label typically represents same parts or step.
In attached drawing:
Fig. 1 shows the schematic diagram of the common light-source structure of current laser projection；
Fig. 2 shows the structural schematic diagrams of the light splitting Multiplexing apparatus in one embodiment of the invention；
Fig. 3 A shows the main view of the Wavelength converter in one embodiment of the invention；
Fig. 3 B shows the side view of the Wavelength converter in one embodiment of the invention；
Fig. 4 shows the structural schematic diagram of the light-source system in one embodiment of the invention；
Fig. 5 shows the structural schematic diagram of the light-source system in one more embodiment of the present invention；
Fig. 6 shows the structural schematic diagram of the light-source system in another embodiment of the present invention；
Fig. 7 shows the partial front elevation view of the Wavelength converter in another embodiment of the present invention；
Fig. 8 shows the structural schematic diagram of the light-source system in one more embodiment of the present invention.
Specific embodiment
In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So
And it is obvious to the skilled person that the present invention may not need one or more of these details and be able to
Implement.In other examples, in order to avoid confusion with the present invention, for some technical characteristics well known in the art not into
Row description.
It should be understood that the present invention can be implemented in different forms, and should not be construed as being limited to propose here
Embodiment.On the contrary, provide these embodiments will make it is open thoroughly and completely, and will fully convey the scope of the invention to
Those skilled in the art.
The purpose of term as used herein is only that description specific embodiment and not as limitation of the invention.Make herein
Used time, " one " of singular, "one" and " described/should " be also intended to include plural form, unless the context clearly indicates separately
Outer mode.It is also to be understood that term " composition " and/or " comprising ", when being used in this specification, determines the feature, whole
The presence of number, step, operations, elements, and/or components, but be not excluded for one or more other features, integer, step, operation,
The presence or addition of component, assembly unit and/or group.Herein in use, term "and/or" includes any of related listed item and institute
There is combination.
In order to thoroughly understand the present invention, detailed description will be given below, to illustrate technical solution of the present invention.This
The preferred embodiment of invention is described in detail as follows, however other than these detailed descriptions, the present invention can also have other implementations
Mode.
The common light-source structure of laser projection is as shown in Figure 1, the laser projection includes laser light source 11 at present, with
And the optical path shaping element (such as convex lens 12, concavees lens 13) set gradually in the optical path of laser light source, diffusion sheet 14, two
To Look mirror 15 and fluorescent wheel, wherein the fluorescent wheel includes fluorescence wheel disc 17 and the fluorescence for being set to the fluorescence sheave surface
Material 18, fluorescent material 18 are used to generate the light of different colours, wherein further include multiple reflection subassemblies in the light-source structure,
Light for guiding laser light source 11 to issue is projected toward dichroscope 15 after fluorescent wheel again to form part emergent light.
Wherein, illustrated in detail so that laser light source emits blue laser as an example with reference to the accompanying drawing, it is real in fig. 1
What line indicated is the optical path trend of blue laser.The blue laser that light source 11 issues is by the convex lens in optical path shaping element
12, concavees lens 13, after dichroscope 15, the notch across fluorescent wheel is directly emitted, and blue laser is through the multiple reflection subassembly
It is emitted after a circle further through dichroscope, forms part emergent light 23.The optical path trend of fluorescence part is shown in the dotted line arrow in figure
Shown in head, the fluorescent material that blue laser irradiates on fluorescent wheel generates stimulated light, forms light 24 after stimulated light reflection and passes through
Dichroscope 15 reflects to form emergent light, and the emergent light 25 and blue light emergent light 23 of stimulated light close color, to obtain output white light.
Since blue light needs to be formed the outgoing actinic light of emergent light and stimulated luminescence after a circle in prior art, lead
It causes the volume of light source bigger, and due to needing to use diffusion sheet dissipation spot in blue light paths, leads to the part optical path
Energy loss is bigger, while the effect for the spot that dissipates is general, and then causes laser source system totality light utilization ratio low.This
Outside, which is inconvenient to increase two-color laser, such as red laser, if forcing to be added, causes the expansion of volume.
To solve the above-mentioned problems, the present invention provides a kind of light splitting Multiplexing apparatus, and the light splitting Multiplexing apparatus includes light splitting
Element, Wavelength converter and polarization conversion device, wherein
The beam splitter, for transmiting the first polarised light for being incident to the beam splitter through the beam splitter or
Person's reflection, using the incident light as the Wavelength converter；
The Wavelength converter, including at least one first subregion and at least one second subregion, wherein described first
Polarised light generates stimulated light after first subregion, and the stimulated light is reflected through the beam splitter or transmitted to be closed
Light, second subregion are used to make to be incident to polarized light transmission or the reflection of second subregion；
The polarization conversion device, the polarised light through the second subregion transmission or reflection turn through the polarization conversion device
Change the second polarised light into, second polarised light is transmitted or reflected through the beam splitter to carry out light combination, wherein described
Two polarised lights have the polarization direction different from first polarised light.
Light splitting Multiplexing apparatus of the invention utilizes the polarization characteristic of light source, is realized using beam splitter to the first polarised light
Selective transmission and reflection, while cooperating revolving Wavelength converter and polarization conversion device, realize the polychromatic light of timing
Output, to obtain required sequential light；Also, light splitting Multiplexing apparatus of the invention can reduce light source volume, be promoted
The efficiency of optical path；And speckle can also be mitigated.
In the following, elaborating referring to figs. 2 to Fig. 8 to light splitting Multiplexing apparatus of the invention and light-source system.Wherein, scheme
2 show the structural schematic diagram of the light splitting Multiplexing apparatus in one embodiment of the invention；Fig. 3 A shows an implementation of the invention
The main view of Wavelength converter in example；Fig. 3 B shows the side view of the Wavelength converter in one embodiment of the invention
Figure；Fig. 4 shows the structural schematic diagram of the light-source system in one embodiment of the invention；Fig. 5 shows another reality of the invention
Apply the structural schematic diagram of the light-source system in example；The structure that Fig. 6 shows the light-source system in another embodiment of the present invention is shown
It is intended to；Fig. 7 shows the partial front elevation view of the Wavelength converter in another embodiment of the present invention；Fig. 8 shows the present invention
Another embodiment in light-source system structural schematic diagram.
As an example, as shown in Fig. 2, it includes light splitting member that light splitting Multiplexing apparatus of the invention, which includes the light splitting Multiplexing apparatus,
Part 1, Wavelength converter 2 and polarization conversion device 3, triplicity complete monochromatic light to realize heterogeneous light sequential export
To the conversion of white light.
In one example, beam splitter 1 is used to make to be incident to described in the first polarised light 101 warp of the beam splitter 1
The transmission of beam splitter 1 or reflection, using the incident light as the Wavelength converter 2, for example, as shown in Fig. 2, described first
Polarised light 101 reflexes to wavelength converter device 2 through the beam splitter 1, alternatively, as shown in figure 5, first polarised light 101
Wavelength converter device 2 is transmitted through through the beam splitter 1.
First polarised light 101 can be arbitrary polarised light, such as first polarised light 101 is with linear polarization
Or the polarised light of approximate linear polarization.
Wherein, the beam splitter 1 select polarization spectroscope or other may be implemented (also to refer to different polarization direction
Polarization state) the polarised light purpose optical element that transmits and reflect respectively, details are not described herein.
Illustratively, polarization spectroscope PBS (Polarized Beam Splitter), the polarization can be selected in beam splitter 1
Spectroscope can be prism, be also possible to plane mirror.
The beam splitter is obliquely installed, so as to be incident to the optical axis (also referred to as of the first polarised light of the beam splitter
The central axis of one polarised light) and the plane of incidence between angle be 45 °, for example, beam splitter (such as described polarization spectroscope) 1 phase
45 degree settings are tilted for horizontal plane, due to after the outgoing of the first polarised light usually with certain angle of divergence, its except optical axis
His light and the optical axis substantially less parallel, the angle of other light and the plane of incidence other than optical axis may not be 45 °, but
Being will not be very big with 45 ° of deviation.The purpose being arranged in this way is the stimulated light made after the Wavelength converter changes wavelength
102 are mutually perpendicular to through the beam splitter 1 reflection front and back, and make the first polarised light that front and back is reflected through the beam splitter
101 are mutually perpendicular to, while the second polarised light 105 for being emitted polarization conversion device is mutual through the beam splitter 1 reflection front and back
Vertically, as shown in Figure 5.
Illustratively, as shown in Figure 3A and Figure 3B, the Wavelength converter 2 is revolving Wavelength converter,
It rotates about axis periodically to be rotated, optionally, the Wavelength converter includes wheeled Wavelength converter and tub
One of Wavelength converter.For example, the Wavelength converter 2 selects wheeled or tub fluorescent apparatus, as shown in Figure 3A.
In one example, the Wavelength converter 2 includes at least one the first subregion (such as subregion one in Fig. 3 A
213) and at least one second subregion 214 (such as blank area in Fig. 3 A) 211, subregion 2 212 and subregion 3, wherein described
First polarised light 101 generates stimulated light 102 after first subregion changes wavelength, and the stimulated light 102 is through the light splitting member
Part 1 transmits (as shown in Figure 2) or reflection (as shown in Figure 5) to carry out light combination, and second subregion is described for making to be incident to
The polarized light transmission (as shown in Figure 2) of second subregion or reflection (as shown in Figure 6).
Quantity and size dimension for the first subregion and the second subregion can reasonably select according to actual needs,
The second subregion more than one of them can to the polarized light transmission or reflection for being incident on second subregion, more than one
The conversion of one subregion is incident on the wavelength of the polarised light of first subregion and generates stimulated light, due to the rotation of Wavelength converter,
So that being incident on the polarised light of Wavelength converter, section can be by different subregions in different times, and the first different subregion
Different processing is carried out to incident light with the second subregion, stimulated light is generated when being incident on the first subregion, and is being incident on second
Either transmission or reflection when subregion, therefore, the output of the first polarised light timing after Wavelength converter, due to stimulated light
It is different with the wavelength of incident light namely its be different colours light, in the wavelength conversion material including multiple and different Wavelength-convertings
The first subregion on produce the light of multiple color, therefore, the eventually light of the output multiple color of timing, and a variety of face
The light of color finally carries out light combination after 1 transmission or reflection of beam splitter, can synthesize white light or other required colors
Light.
In one example, as shown in Figure 3A, the Wavelength converter 2 includes substrate 20, and is formed in the base
The wavelength conversion material in first subregion on plate 20, for example, the substrate 20 can be circular substrate 20, the wavelength
Transition material is set up in week the substrate 20, fan annular, semi-circular etc. is formed on substrate, for different switching wavelength
Wavelength conversion material can also be arranged in the circumferential near the outer peripheral edge of the substrate.
Substrate 20 is to irradiate dress by the exciting light to the substrate 20 such as silver vapor deposition by the metal base of the formation such as copper, aluminium
The surface for setting side carries out mirror finish, so that stimulated light reflects Wavelength converter 2.The wavelength conversion material be formed in into
Gone mirror finish substrate 20 surface.
Illustratively, the Wavelength converter 2 includes at least two first subregions, at different described first point
Setting has the wavelength conversion material of different switching wavelength in area, wherein the wave with different switching wavelength
Long transition material includes yellow light transition material, green light transition material and feux rouges transition material.For example, as shown in Figure 3A, it is described
Wavelength converter includes 3 the first subregions, such as subregion 1, subregion 2 212, subregion 3 213, wherein this 3 subregions
Wavelength conversion material with different switching wavelength, for example, subregion 1 is feux rouges transition material, subregion 2 212 is that green light turns
Conversion materials, subregion 3 213 are yellow light transition material.
In one example, as illustrated in figure 3, second subregion 214 is dispersing for transmission region or notch or light transmission
Region is penetrated, so as to be incident to the polarized light transmission of second subregion 214, wherein in second subregion 214 overflowing for light transmission
When scattering region, which can also carry out the light by the region to eliminate coherence's processing, to weaken speckle.It can
Selection of land, second subregion 214 are the notch being arranged on the substrate 20 or the photic zone that is arranged on the substrate 20.
In another example, as shown in fig. 7, second subregion 214 of the Wavelength converter 2 is echo area,
To reflect the light for being incident on the echo area, wherein preferably, the echo area is diffusing reflection area, to eliminate coherence,
Mitigate speckle.
It is noted that when more than two second subregions are arranged on the Wavelength converter, with
The position on substrate between one subregion can be arbitrary, such as be alternately arranged in the circumferential direction of substrate.
Optionally, the Wavelength converter 2 is configured to orthogonal with the optical axis for the light beam for being incident to Wavelength converter.
In one example, as shown in Figure 3B, the Wavelength converter further includes driving device 216, for driving
Wavelength converter 2 is stated to rotate according to the scheduled period.Optionally, the driving device 216 includes motor, and the substrate 20 is big
It causes to be discoid, the center portion thereof is fixed to the axle portion of motor.
In one example, as shown in Figure 3A and Figure 3B, the Wavelength converter further includes connecting line 215, the company
The driving device 216 is electrically connected to external power supply by wiring 215, to make described in its drive to the driving device 216 power supply
The rotation of wavelength converter device.
Optionally, the wavelength converter device rotation 2 can further include radiator (not shown), be used for wavelength
The heat that transition material generates is distributed in time to cool down to the wavelength converter device.
In one example, as shown in Figure 2 and Figure 5, light splitting Multiplexing apparatus of the invention further includes polarization conversion device 3,
Polarised light through 1 transmission or reflection of the second subregion is converted into the second polarised light 105 through the polarization conversion device 3, described
Second polarised light has the polarization direction different from first polarised light, and second polarised light 105 is through the beam splitter 1
(as shown in Figure 2) or reflection (as shown in Figure 5) are transmitted to carry out light combination.
The polarization conversion device 3 can be arbitrary the element that can change polarization direction, for example, quarter wave plate, line is inclined
Vibration light is converted to circularly polarized light by quarter wave plate, and circularly polarized light is then converted to linearly polarized light by quarter wave plate.
In one example, as shown in Fig. 2, Fig. 4 and Fig. 5, light splitting Multiplexing apparatus of the invention further includes reflecting element 4,
The polarization conversion device 3 is arranged between the reflecting element 4 and the Wavelength converter 2, through Wavelength converter 2
First polarised light 101 of second subregion transmission is converted to circularly polarized light 103 through the polarization conversion device 3, by described anti-
It penetrates the circularly polarized light 104 that element is reflected back and is converted to second polarised light 105 through the polarization conversion device 3.
Illustratively, the second polarised light 105 and the first polarised light 101 have different polarization directions, first polarization
One in light 101 and second polarised light 105 transmits through the beam splitter 1, then another is anti-through the beam splitter 1
It penetrates, for example, the two polarization direction is opposite.The second polarised light 105 is compared with the first polarised light 101 and is only changed in the present invention
Polarization direction, without will affect its wavelength, for example, the first polarised light 101 is blue laser, then the second polarised light 105 is remained as
Blue laser.
The reflecting element 4 may include reflecting mirror or other suitable elements with reflex.
In one example, such as Fig. 2 and as shown in figure 4, as described in second polarised light 105 and the warp of the stimulated light 102
Beam splitter 1 is transmitted to carry out light combination, alternatively, as shown in figure 5, described in second polarised light 105 and the warp of the stimulated light 102
Beam splitter 1 is reflected to carry out light combination.
A kind of light channel structure of light splitting Multiplexing apparatus of the invention as shown in Figure 2, below with reference to the light channel structure to one
The optical path of light splitting Multiplexing apparatus in kind embodiment is explained and illustrated.
As shown in Fig. 2, the first polarised light 101 for being incident to the beam splitter 1 is reflected through the beam splitter 1, as
For incident light beam strikes to Wavelength converter 2, which is wheeled Wavelength converter.It is revolved in Wavelength converter
During turning, when the first polarised light reflected through the beam splitter 1 is incident on the first subregion, stimulated light 102 is generated, it should be by
Laser 102 transmits away through the beam splitter 1 to carry out light combination；And the first polarised light reflected through the beam splitter 1 enters
When being mapped to the second subregion (being transmission region in Fig. 2) of wavelength converter device, the first polarised light 101 is directed through and is incident to partially
Shake conversion element (such as quarter wave plate) 3, generates phase delay, and the first polarised light 101 of linear polarization is changed into circularly polarized light 103,
After being incident on reflecting element 4, the circularly polarized light 104 through reflecting backtracking again passes by polarization conversion device and is changed into the
The polarization direction of the outgoing of two polarised lights 105, the polarization direction of the second polarised light 105 and the first polarised light 101 is on the contrary, the second polarization
Light 105 is transmitted away through beam splitter 1 to carry out light combination, and final stimulated light 102 and 105 light combination of the second polarised light form white light,
Since wavelength converter device is rotation, so the output of 105 timing of stimulated light and the second polarised light.
In one example, as shown in Figures 4 to 6, the light splitting Multiplexing apparatus further includes 1061 He of the first shaping lens
Second shaping lens 1062, the first shaping lens 1061 are arranged between the beam splitter 1 and the Wavelength converter 2,
It is focused with the emergent light to the beam splitter 1 and the stimulated light 102 and second polarised light 105 is collimated simultaneously；
Second shaping lens 1062 are arranged between the polarization conversion device 3 and the Wavelength converter 2, described in warp
The second subregion transmission (as shown in Figure 4 and Figure 5) of Wavelength converter 2 or the polarised light for reflecting (as shown in Figure 6) carry out quasi-
It is straight that the polarised light being emitted through the polarization conversion device 3 is assembled simultaneously, for example, as shown in Figure 4 and Figure 5, described second
Shaping lens 1062 are arranged between the polarization conversion device 3 and the Wavelength converter 2, to through the wavelength convert
First polarised light of the second subregion transmission of device 2 is collimated, while inclined to second be emitted through the polarization conversion device 3
Vibration light 105 is assembled, second polarised light 105 after the convergence of the second shaping lens 1062 through the wavelength converter device the
The transmission of two subregions, then be incident to beam splitter 1 after the first shaping lens 1061 collimation and transmit progress light combination later.
Optionally, first shaping lens 1061 and second shaping lens 1062 can be with collimation and assemble
The lens of effect, in the present embodiment, first shaping lens 1061 and second shaping lens 1062 include convex lens
Mirror can also include the lens group of other multiple lens compositions, be not specifically limited herein.The shaping lens can be significantly
Reduce the size of light-source system.
Wherein, the Wavelength changing element is set to before and after the focus of aforementioned shaping lens, such as wavelength convert member
Part is set in the focus of the shaping lens or within the scope of the appropriately distance of front and back, and specifically distance range can basis
Actual needs is configured, it is not limited to a certain numberical range.
In another example, as shown in figure 5, being incident to the first polarised light 101 of the beam splitter 1 through the light splitting
Element 1 transmits, using the incident light 1011 as the Wavelength converter, described in incident light 1011 (namely first polarised light) warp
First subregion of Wavelength converter generates stimulated light 102 after changing wavelength, and the stimulated light 102 is anti-through the beam splitter 1
It penetrates to carry out light combination, second subregion is used to make to be incident to the polarized light transmission of second subregion, through the polarization conversion
Element 3 is converted into the second polarised light 105, and second polarised light 105 is reflected through the beam splitter 1 to carry out light combination.
In another example, as shown in fig. 6, the second subregion of the Wavelength converter 2 be set as echo area (such as
Diffusing reflection area), the polarization conversion device 3 is arranged between the beam splitter 1 and the Wavelength converter 2.First partially
Vibration light 101 is incident to polarization conversion device 3 as incident light 1011 through the beam splitter 1 reflection, through 3 turns of polarization conversion device
It is changed to the echo area that circularly polarized light 103 is assembled through the second shaping lens 1062 and is incident to Wavelength converter, it is unrestrained through echo area
Circularly polarized light 104 (circular polarization and circularly polarized light 103 of circularly polarized light 104 are opposite) after reflection is through the second shaping lens
It is incident on polarization conversion device 3 after 1062 collimations, then is converted to the second polarised light 105 of linear polarization through polarization conversion device 3, the
Two polarised lights 105 are vertical with the first polarised light 101, and the second polarised light 105 is transmitted through the beam splitter 1 to carry out light combination, and
The first subregion generation stimulated light 102 that circularly polarized light 103 is incident to Wavelength converter is converted to through polarization conversion device 3, by
Laser 102 after reflection, after the second shaping lens 1062 collimation, then successively through polarization conversion device 3 and beam splitter 1 with
Light combination is carried out with stimulated light 102.
So far the explanation and illustration of the primary structure to light splitting Multiplexing apparatus of the invention, the light splitting Multiplexing apparatus are completed
It further include other possible elements, this will not be repeated here.Light splitting Multiplexing apparatus of the invention includes
Light splitting Multiplexing apparatus of the invention utilizes the polarization characteristic of light source, is realized using beam splitter to the first polarised light
Selective transmission and reflection, while cooperating revolving Wavelength converter and polarization conversion device, realize the polychromatic light of timing
Output, to obtain required sequential light；Also, the ability after a circle can be needed to avoid exciting light by the setting
Light splitting Multiplexing apparatus of the invention is applied to light-source system by the drawback for causing the volume ratio of light source larger with stimulated luminescence light combination
The volume that light source can be reduced promotes the efficiency of optical path；And speckle can also be mitigated.
In another embodiment of the present invention, a kind of light-source system is also provided, which includes:
First light source, for emitting the first polarised light, as in the incident light and previous embodiment of light splitting Multiplexing apparatus
Light splitting Multiplexing apparatus.
Since light-source system of the invention includes light splitting Multiplexing apparatus above-mentioned, small in size, the light of light-source system
Road it is high-efficient；And with less speckle.
Light-source system of the invention is explained and illustrated below with reference to fig. 4 to fig. 6 and Fig. 8.Before not conflicting
It puts, the embodiment of the present invention can be combined with each other.
Light-source system of the invention includes first light source 10, for emitting the first polarised light 101, as light splitting Multiplexing apparatus
Incident light.Namely the light source transmitting has the first polarised light 101 of linear polarization or approximate linear polarization, such as blue laser.
First polarised light 101 can be blue light, red light, purple light or ultraviolet light etc., but not with above-mentioned
It is limited, the first polarised light 101 can be random color.The light source is laser light source, is emitted by specific laser light-source device
Laser with single polarization characteristic, at present using it is more be Japanese Ya company 445nm/30W laser light source, certainly
Also other laser light sources can be used.It is special according to the laser light source quantity and polarization that use in order to guarantee the light-out effect of light source
Property it is different, can appropriate adjustment light combination optical path.
In one example, the light-source system further includes being arranged between the first light source 10 and beam splitter 1
Optical path shaping element, for carrying out collimating and correcting to first polarised light 101.
Wherein, optical path shaping element make with from the uniform-illumination in the face of the central axis of the illumination light of light source incidence
Change.Optionally, when the light that first light source 10 emits meets particular demands, optical path shaping element can not be included in light-source system
In.
Illustratively, the optical path shaping element includes at least lens array, and the lens array includes multiple lens, example
Such as convex lens, biconcave lens, D lens, cylindrical lens, the wherein number, type and set-up mode of lens can be according to reality
Border needs to be configured.In one embodiment of this invention, the optical path shaping element includes the optical path in the first polarised light 101
On the convex lens 107 and biconcave lens 108 that set gradually, be adjusted with the first polarised light 101 of the outgoing to light source.
In one example, the light-source system further includes diffusion sheet 109, and diffusion sheet 109 is arranged in beam splitter 1 and institute
It states between first light source 10, for eliminate to first polarised light 101 processing of coherence, thus mitigate speckle,
In, in the present embodiment, the diffusion sheet 109 is arranged between the optical path shaping element and beam splitter 1, such as setting exists
Between biconcave lens 108 and beam splitter 1.
Further, the light-source system includes the light combination light-dividing device in previous embodiment, to avoid repeating, herein not
Light combination light-dividing device is described in detail again.
Further, the light-source system still further comprises photosynthesis element, is used for stimulated light 102 and polarization spectroscope
Transmit light (such as second polarised light 105) carry out light combination.
Further, the light source can be monochromatic source, can also be double-colored light source or polychromatic source.
Due to the characteristic of light-source system structure of the invention, so that easily increasing other in the optical path of light-source system
Second light source, the second light source and first light source constitute double-colored light source, or can also increase more supplement light sources, with the
One light source constitutes polychromatic source.For example, by taking double-colored light source as an example, as shown in figure 8, light-source system further includes second light source 10 ', institute
It states second light source 10 ' and the first light source 10 is separately positioned on the two sides of the beam splitter 1, the second light source 10 ' is sent out
The light penetrated reflects to carry out light combination through the beam splitter 1, such as carries out light combination with stimulated light 102 and the second polarised light 105.
It is only to increase second light source 10 ' since the Fig. 8 is compared with the optical path of Fig. 6, the description for the light channel structure of the Fig. 8
It can be with reference to the optical path description in previous embodiment in relation to Fig. 6.
In another example, the first light source and second light source can also be arranged in the same of the beam splitter 1
The different location of side, such as be arranged in light channel structure as shown in Figure 5, make the biography of the emergent light of the second light source transmitting
The transmission direction of defeated direction and the first polarised light is substantially in 90 °, and the emergent light for emitting second light source has and the first polarization
The identical polarization state of light, so that it is transmitted through beam splitter 1 to carry out light combination.
The emergent light that the emergent light of the second light source transmitting can emit with the first light source has different colours, example
Such as, the first light source emits blue laser, the second light source then transmitting red laser beam.
Illustratively, optical path shaping element can also be set between the second light source 10 ' and the beam splitter 1,
The optical path shaping element has effect identical with the optical path shaping element in previous embodiment, for the second light source
The emergent light of 10 ' transmittings carries out collimating and correcting.The optical path shaping element may include convex lens, or with light in previous embodiment
The identical structure of road shaping element, is not specifically limited herein.
So far the explanation and illustration to light-source system of the invention is completed, can also include for complete light-source system
Other elements, this will not be repeated here.
Light-source system of the invention can be applied in the application scenarios of any required synthesis light, including but not limited to apply
In laser projection, such as one chip laser projection.Light-source system of the invention can be realized the heterogeneous light output of timing,
Obtain sequential light required for laser projection.
The present invention has been explained by the above embodiments, but it is to be understood that, above-described embodiment is only intended to
The purpose of citing and explanation, is not intended to limit the invention to the scope of the described embodiments.Those skilled in the art are also
It is understood that the present invention is not limited to the above embodiments, introduction according to the present invention can also make more kinds of changes
Type and modification, all fall within the scope of the claimed invention for these variants and modifications.Protection scope of the present invention is by attached
Claims and its equivalent scope of category are defined.
Claims (23)
1. a kind of light splitting Multiplexing apparatus, which is characterized in that the light splitting Multiplexing apparatus include beam splitter, Wavelength converter with
And polarization conversion device, wherein
The beam splitter, for transmiting the first polarised light for being incident to the beam splitter through the beam splitter or instead
It penetrates, using the incident light as the Wavelength converter；
The Wavelength converter, including at least one first subregion and at least one second subregion, wherein first polarization
Light generates stimulated light after first subregion, and the stimulated light is reflected through the beam splitter or transmitted to carry out light combination, institute
State polarized light transmission or reflection of second subregion for making to be incident to second subregion；
The polarization conversion device, the polarised light through the second subregion transmission or reflection are converted into through the polarization conversion device
Second polarised light, second polarised light are transmitted or are reflected through the beam splitter to carry out light combination, wherein described second partially
The light that shakes has the polarization direction different from first polarised light.
2. light splitting Multiplexing apparatus as described in claim 1, which is characterized in that the light splitting Multiplexing apparatus further includes reflector
Part, the polarization conversion device is arranged between the reflecting element and the Wavelength converter, saturating through second subregion
First polarised light penetrated is converted to circularly polarized light through the polarization conversion device, and the circularly polarized light is by the reflecting element
It is reflected back the polarization conversion device and is converted to second polarised light.
3. light splitting Multiplexing apparatus as claimed in claim 2, which is characterized in that second polarised light and the stimulated light are through institute
Beam splitter transmission is stated to carry out light combination, alternatively, second polarised light and the stimulated light through the beam splitter reflect with
Carry out light combination.
4. light splitting Multiplexing apparatus as described in claim 1, which is characterized in that second subregion of the Wavelength converter
For echo area, the polarization conversion device is arranged between the beam splitter and the Wavelength converter.
5. light splitting Multiplexing apparatus as claimed in claim 4, which is characterized in that the echo area is diffusing reflection area, to eliminate phase
Stemness.
6. light splitting Multiplexing apparatus as described in claim 4 or 5, which is characterized in that described the reflected through the beam splitter
One polarised light is converted to circularly polarized light through the polarization conversion device, and the circularly polarized light is reflected back described inclined through the echo area
Vibration conversion element is converted to after second polarised light through the beam splitter transmission or reflection to carry out light combination.
7. light splitting Multiplexing apparatus as described in claim 4 or 5, which is characterized in that described the reflected through the beam splitter
One polarised light is converted to circularly polarized light through the polarization conversion device, and the circularly polarized light is incident to first subregion and generates institute
It states stimulated light and reflexes to the beam splitter transmission or reflection to carry out light combination.
8. light splitting Multiplexing apparatus as described in claim 1, which is characterized in that the beam splitter is obliquely installed, so that incident
It is 45 ° to the angle between the optical axis and the plane of incidence of the first polarised light of the beam splitter.
9. light splitting Multiplexing apparatus as described in claim 1, which is characterized in that the Wavelength converter includes substrate, and
Form the wavelength conversion material in first subregion on the substrate.
10. light splitting Multiplexing apparatus as claimed in claim 9, which is characterized in that the Wavelength converter includes at least two
First subregion, setting has the wavelength conversion material of different switching wavelength in different first subregions.
11. light splitting Multiplexing apparatus as claimed in claim 10, which is characterized in that the wave with different switching wavelength
Long transition material includes yellow light transition material, green light transition material and feux rouges transition material.
12. light splitting Multiplexing apparatus as described in claim 1, which is characterized in that second subregion is transmission region or lacks
The diffusing scattering region of mouth or light transmission, so as to be incident to the polarized light transmission of second subregion.
13. light splitting Multiplexing apparatus as claimed in claim 9, which is characterized in that second subregion is to be arranged in the substrate
On notch or setting photic zone on the substrate.
14. light splitting Multiplexing apparatus as described in claim 1, which is characterized in that the Wavelength converter further include:
Driving device, for driving the Wavelength converter to rotate according to the scheduled period；
The driving device is electrically connected to external power supply by connecting line, the connecting line.
15. light splitting Multiplexing apparatus as described in claim 1, which is characterized in that the light splitting Multiplexing apparatus further include:
First shaping lens are arranged between the beam splitter and the Wavelength converter, to the beam splitter
Emergent light, which focuses, simultaneously collimates the stimulated light and second polarised light.
16. light splitting Multiplexing apparatus as described in claim 1, which is characterized in that the light splitting Multiplexing apparatus further includes second whole
Shape lens, second shaping lens are arranged between the polarization conversion device and the Wavelength converter, to through institute
The polarised light for stating the transmission of the second subregion or reflection collimate and meanwhile to the polarised light being emitted through the polarization conversion device into
Line convergence.
17. light splitting Multiplexing apparatus as described in claim 1, which is characterized in that the beam splitter includes polarization spectroscope；
And/or the polarization conversion device includes quarter-wave plate.
18. light splitting Multiplexing apparatus as described in claim 1, which is characterized in that the first polarised light is with linear polarization or approximation
The polarised light of linear polarization.
19. a kind of light-source system, which is characterized in that the light-source system includes:
First light source, the incident light for emitting the first polarised light, as the light splitting Multiplexing apparatus；
Such as the described in any item light splitting Multiplexing apparatus of claim 1-18.
20. light-source system as claimed in claim 19, which is characterized in that the light-source system further includes being arranged described first
Optical path shaping element between light source and beam splitter, for carrying out collimating and correcting to first polarised light.
21. light-source system as claimed in claim 19, which is characterized in that the light-source system further includes diffusion sheet, and setting exists
Between beam splitter and the first light source, for eliminate to first polarised light processing of coherence.
22. light-source system as claimed in claim 19, which is characterized in that the light-source system further includes second light source, described
Second light source is separately positioned on the two sides of the beam splitter with the first light source or the same of the beam splitter is arranged in
The light of the different location of side, the second light source transmitting is reflected through the beam splitter or is transmitted to carry out light combination.
23. light-source system as claimed in claim 19, which is characterized in that the first light source is laser light source, for emitting
First polarised light with linear polarization or approximate linear polarization.
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| CN201811088635.6A CN109164589A (en) | 2018-09-18 | 2018-09-18 | A kind of light splitting Multiplexing apparatus and light-source system |
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| CN201811088635.6A CN109164589A (en) | 2018-09-18 | 2018-09-18 | A kind of light splitting Multiplexing apparatus and light-source system |
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| CN111399241A (en) * | 2020-03-07 | 2020-07-10 | 赫尔曼·友瀚·范·贝赫库姆 | Light emitting device |
| CN111965929A (en) * | 2020-09-15 | 2020-11-20 | 四川长虹电器股份有限公司 | Novel total reflection type fluorescent wheel device |
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Application publication date: 20190108 |