CN105022210B - Optical system, light emitting device and optical projection system - Google Patents
Optical system, light emitting device and optical projection system Download PDFInfo
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- CN105022210B CN105022210B CN201410155373.6A CN201410155373A CN105022210B CN 105022210 B CN105022210 B CN 105022210B CN 201410155373 A CN201410155373 A CN 201410155373A CN 105022210 B CN105022210 B CN 105022210B
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Abstract
The present invention provides a kind of optical system, light emitting device and optical projection systems, it include: the Wavelength converter with a wavelength conversion sheet, the wavelength conversion sheet has at least two light emitting regions, and each light emitting region has a kind of wavelength conversion material, different light emitting regions has different wavelength conversion material；According at least two optical filters of preset shape permutation and combination, each optical filter receives the stimulated light of light emitting region transmitting, and different optical filters corresponds to different light emitting regions, wherein, each optical filter reflects the stimulated light of its corresponding light emitting region transmitting, also, according to the arrangement order of the optical filter, the previous filter transmission of the latter filter transmission or the stimulated light of reflection, for synthesizing and exporting the stimulated light.Compared with prior art, the present invention is achieved that the synthesis and output of different stimulated lights, structure is simpler, and cost is lower only with one wavelength conversion sheet and less optical filter.
Description
Technical field
The present invention relates to optical technical fields, are more specifically to a kind of optical system, light emitting device and projection
System.
Background technique
In recent years, with the development of semiconductor light source technology, UHP (Ultra High is replaced using semiconductor light source
Pressure, ultrahigh pressure mercury lamp) light bulb as the light source of projector has become an important technological development direction.
Earlier in semiconductor light source optical projection system, wavelength conversion sheet rotation is driven by driving device, generates different face
The stimulated light of color, then by different colours be excited photosynthesis light beam after, carry out the display of projected image.But it is filled in driving
It sets under the limitation of revolving speed, the switch speed of different colours stimulated light is very low, will lead to the appearance of rainbow effect, influences Projection Display
The quality of image.
Based on this, the prior art proposes a kind of optical projection system, to solve the problems, such as rainbow effect, as shown in Figure 1, including
Three groups of light emitting devices 10,20 and 30, this three groups of light emitting devices respectively include light source 101,201 and 301, optical filter 102,202 and
302, lens 103,203 and 303, wavelength conversion sheet 104,204 and 304 and driving device 105,205 and 305.Wherein, often
Group light emitting device all has a light source and wavelength conversion sheet, therefore, can generate stimulated light λ 2, λ 3 and λ 4 respectively, different
Stimulated light λ 2, λ 3 and λ 4 synthesize light beam after optical filter 106,206 and 306 transmission or reflections, carry out projected image
Display.
In the optical projection system, by opening or closing for control light source, turn to control the light of exciting light in different wave length
It changes between piece and switches over, and switch speed is improved with this, eliminate rainbow effect, still, which uses multiple
Wavelength conversion sheet and more optical filter etc., structure is complicated, higher cost, is unfavorable for the extensive use of finished device.
Summary of the invention
In view of this, the present invention provides a kind of optical system, light emitting device and optical projection system, to solve in the prior art
The problem of projection system architecture is complicated, higher cost.
To achieve the above object, the invention provides the following technical scheme:
A kind of optical system, comprising:
Wavelength converter with a wavelength conversion sheet, the wavelength conversion sheet have at least two light emitting regions,
And each light emitting region has a kind of wavelength conversion material, different light emitting regions has different wavelength conversion material；
According at least two optical filters of preset shape permutation and combination, each optical filter receives a light emitting region hair
The stimulated light penetrated, and different optical filters corresponds to different light emitting regions, wherein each optical filter reflects its corresponding hair
The stimulated light of light field emission, also, according to the arrangement order of the optical filter, the previous optical filter of the latter filter transmission
The stimulated light of transmission or reflection, for synthesizing and exporting the stimulated light.
Preferably, at least two optical filters according to preset shape permutation and combination specifically:
At least two optical filter is arranged successively along straight line.
Preferably, described according to preset shape permutation and combination when at least two optical filter is three optical filters
At least two optical filters specifically:
Three optical filters are arranged successively composition triangle.
Preferably, when at least two optical filter be three optical filters when, the optical system include the first optical filter,
Second optical filter and third optical filter, wherein the optical system further includes reflector plate, is used for second filter transmission
Or the stimulated light of reflection reflexes to third optical filter.
Preferably, a lens are provided between each light emitting region and corresponding optical filter, for assembling collimation
The stimulated light of the light emitting region outgoing, and transmit it to corresponding optical filter.
A kind of light emitting device, comprising:
Optical system as described above, the optical system include with a wavelength conversion sheet Wavelength converter with
And at least two optical filters according to preset shape permutation and combination, the wavelength conversion sheet have at least two light emitting regions, and
Each light emitting region has a kind of wavelength conversion material, and different light emitting regions has different wavelength conversion material；
The exciting light correspondence of at least two light sources, each light source transmitting is incident on described in one of the wavelength conversion sheet
On light emitting region, and different light sources corresponds to different light emitting regions.
Preferably, the light emitting device further include:
The control circuit being connected at least two light source is separately or concurrently sent out for controlling at least two light source
Exciting light is penetrated, the wavelength conversion material is made separately or concurrently to issue stimulated light.
Preferably, the optical filter and the light source are located at the two sides of the wavelength conversion sheet.
Preferably, the optical filter and the light source are located at the same side of the wavelength conversion sheet, and the optical filter position
Between the wavelength conversion sheet and corresponding light source.
Preferably, when the optical filter is between the wavelength conversion sheet and corresponding light source, the optical filter is
Transmit the optical filter of the exciting light of the light source transmitting；Or be the optical filter with through-hole, the light is transmitted by the through-hole
The exciting light of source transmitting.
Preferably, also there are at least two lens, each lens are used between the optical filter and the wavelength conversion sheet
In the stimulated light for assembling the transmitting of one light emitting region of collimation, and different lens correspond to different light emitting regions.
Preferably, at least two light emitting region is distributed in concentric ring-shaped.
Preferably, at least two light emitting region is successively arranged along center of circle outwardly direction, wherein previous luminous zone
The launching efficiency of the wavelength conversion material in domain is higher than the launching efficiency of the wavelength conversion material of the latter light emitting region.
A kind of optical projection system, including as above described in any item light emitting devices.
Compared with prior art, the technical scheme provided by the invention has the following advantages:
Optical system, light emitting device and optical projection system provided by the invention, including according to preset shape permutation and combination extremely
Few two optical filters, the optical filter receive the stimulated light of same wavelength conversion sheet difference light emitting region transmitting, and according to institute
It states the stimulated light of the arrangement order of optical filter, the previous filter transmission of the latter filter transmission or reflection, is synthesized with this
And export stimulated light.Compared with prior art, as soon as the present invention only with wavelength conversion sheet and less optical filter,
The synthesis and output of different stimulated lights are realized, structure is simpler, and cost is lower.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of optical projection system in the prior art；
Fig. 2 a is a kind of optical system diagram that the embodiment of the present invention one provides；
Fig. 2 b is a kind of side view for optical system that the embodiment of the present invention one provides；
Fig. 3 is another optical system diagram that the embodiment of the present invention one provides；
Fig. 4 is the structure chart of wavelength conversion sheet provided by Embodiment 2 of the present invention；
Fig. 5 is the structural schematic diagram of light emitting device provided by Embodiment 2 of the present invention；
Fig. 6 is the structure chart of the optical filter in light emitting device provided by Embodiment 2 of the present invention with through-hole；
Fig. 7 is the structural schematic diagram in the light emitting device that the embodiment of the present invention three provides；
Fig. 8 is the structural schematic diagram for another wavelength conversion sheet that the embodiment of the present invention three provides.
Specific embodiment
As described in background, although existing optical projection system eliminates rainbow effect, and still, which employs multiple waves
Long conversion sheet and more optical filter etc., structure is complicated, higher cost, is unfavorable for the extensive use of finished device.
Based on this, the present invention provides a kind of optical systems, to overcome the above problem of the existing technology, comprising:
Wavelength converter with a wavelength conversion sheet, the wavelength conversion sheet have at least two light emitting regions,
And each light emitting region has a kind of wavelength conversion material, different light emitting regions has different wavelength conversion material；According to
At least two optical filters of preset shape permutation and combination, each optical filter receive the stimulated light of light emitting region transmitting,
And different optical filters corresponds to different light emitting regions, wherein each optical filter reflects its corresponding light emitting region transmitting
Stimulated light, also, according to the arrangement order of the optical filter, the previous filter transmission of the latter filter transmission or reflection
Stimulated light, for synthesizing and exporting the stimulated light.
The present invention provides a kind of light emitting devices, comprising:
Optical system as described above, the optical system include with a wavelength conversion sheet Wavelength converter with
And at least two optical filters according to preset shape permutation and combination, the wavelength conversion sheet have at least two light emitting regions, and
Each light emitting region has a kind of wavelength conversion material, and different light emitting regions has different wavelength conversion material；At least two
The exciting light correspondence of a light source, each light source transmitting is incident on the light emitting region, and different light sources is corresponding not
Same light emitting region.
The present invention provides a kind of optical projection systems, including light emitting device as described above.
Optical system, light emitting device and optical projection system provided by the invention, including according to preset shape permutation and combination extremely
Few two optical filters, the optical filter receive the stimulated light of Same Wavelength conversion sheet difference light emitting region transmitting, and according to described
The stimulated light of the arrangement order of optical filter, the previous filter transmission of the latter filter transmission or reflection is synthesized simultaneously with this
Export stimulated light.Compared with prior art, as soon as the present invention only with wavelength conversion sheet and less optical filter, it is real
The synthesis and output of different stimulated lights are showed, structure is simpler, and cost is lower.
It is core of the invention thought above, to keep the above objects, features and advantages of the present invention more obvious easily
Understand, specific embodiments of the present invention will be described in detail with reference to the accompanying drawing.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
Implemented using other than the one described here other way, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by the specific embodiments disclosed below.
Secondly, combination schematic diagram of the present invention is described in detail, when describing the embodiments of the present invention, for purposes of illustration only, table
Show that the sectional view of device architecture can disobey general proportion and make partial enlargement, and the schematic diagram is example, is not answered herein
Limit the scope of protection of the invention.In addition, the three-dimensional space of length, width and depth should be included in actual fabrication.
Embodiment one
Present embodiments provide a kind of optical system, comprising: Wavelength converter with wavelength conversion sheet and
According at least two optical filters of preset shape permutation and combination.
The wavelength conversion sheet has at least two light emitting regions, and each light emitting region has a kind of wavelength convert material
Material, different light emitting regions have different wavelength conversion material；At least two filters according to preset shape permutation and combination
Mating plate, each optical filter receives the stimulated light of light emitting region transmitting, and different optical filters corresponds to different luminous zones
Domain, wherein each optical filter reflects the stimulated light of its corresponding light emitting region transmitting, also, according to the optical filter
The stimulated light of arrangement order, the previous filter transmission of the latter filter transmission or reflection, for synthesize and export it is described by
Laser.
Optical system in the present embodiment can be set in advance according to the shape and distribution of wavelength convert on piece light emitting region
Shape and the permutation and combination etc. of optical filter are counted, in order to synthesize and export the wavelength convert on piece difference light emitting region transmitting
Stimulated light.
It wherein, can be with according at least two optical filters of preset shape permutation and combination are as follows: at least two optical filter edge
Straight line is arranged successively.There are three light emitting regions with the wavelength convert on piece and the optical system includes three filters
For mating plate, as shown in Figure 2 a, wavelength conversion sheet 204 has the first light emitting region that is circular and being arranged successively outward along the center of circle
2041, the second light emitting region 2042 and third light emitting region 2043, wherein optical filter 201,202 and 203 receives third respectively
The stimulated light of light emitting region 2043, the first light emitting region 2041 and the transmitting of the second light emitting region 2042, or the is received respectively
The stimulated light that one light emitting region 2041, the second light emitting region 2042 and third light emitting region 2043 emit, the present invention and not only
It is limited to this, also, optical filter 201,202 and 203 is arranged successively along a vertical straight line.
As shown in Figure 2 b, wherein optical filter 201,202 and 203 can reflect being excited for its corresponding light emitting region transmitting
Light λ 4, λ 5 and λ 6, and optical filter 202 is transmissive to the stimulated light λ 4 of the reflection of optical filter 201, optical filter 203 is transmissive to filter
The stimulated light λ 4 and λ 5 of 202 transmission or reflection of piece, stimulated light λ 4, λ 5 and λ 6 are merged into light beam and defeated after optical filter 203
Out into subsequent lens 205 and dodging device 206.
Wherein, optical filter 201,202 and 203, i.e. at least two optical filters arrange along straight line, refer to these filters
When the stimulated light of the different light emitting regions of the corresponding reception of mating plate, stimulated light is incident on the region on optical filter in straight line.Due to
Light is preferably all across the center of optical filter, and therefore, at least two optical filter refers at least two along straight line arrangement
The center of a optical filter is arranged in straight line.
As shown in Figure 2 b, the stimulated light of different light emitting regions outgoing is incident in parallel on different optical filters, due to this three
It is parallel to each other between a optical filter, i.e., the angle between these three optical filters and horizontal plane is identical, and therefore, different stimulated lights enters
The angle being mapped on optical filter be it is identical, the exit direction of the stimulated light after optical filter reflects is also identical, also,
It is in straight line since stimulated light is incident on the region on optical filter, the stimulated light after optical filter reflects also is in one
Straight line, so as to so that different is excited photosynthesis light beam.
Alternatively, when at least two optical filter be three optical filters when, it is described according to preset shape permutation and combination extremely
Few two optical filters can be with are as follows: three optical filters are arranged successively composition triangle.
At this point, the optical system includes the first optical filter 301, the second optical filter 302 and third optical filter 303, difference
The first light emitting region 3051, the second light emitting region 3052 and third light emitting region 3053 in corresponding wavelength conversion sheet, wherein
The optical system further includes reflector plate 304, for the stimulated light λ 4 and λ 5 of 302 transmission or reflection of the second optical filter is anti-
It is incident upon third optical filter 303, as shown in Figure 3.
First optical filter 301, the second optical filter 302 and third optical filter 303 are arranged successively and constitute triangle, difference
The stimulated light λ 4 of corresponding light emitting region is reflected, and the second optical filter 302 transmits being excited for the first optical filter 301 reflection
The stimulated light λ 4 of second optical filter, 302 transmission or reflection and λ 5 are reflexed to third optical filter 303, make it by light λ 4, reflector plate 304
The stimulated light λ 6 reflected with third optical filter 303 is merged into light beam, and export to subsequent lens etc..
Similarly, the first optical filter 301, the second optical filter 302 and third optical filter 303 are arranged successively and constitute triangle,
Refer to that the region that stimulated light is incident on these three optical filters constitutes triangle, the preferably center of these three optical filters constitutes three
It is angular.
As shown in figure 3, in order to make stimulated light λ 4 and λ 5 synthesize light beam, 302 phase of the first optical filter 301 and the second optical filter
It is mutually parallel and arranged in straight line, not point-blank due to third optical filter 303 and the two optical filters,
Stimulated light λ 4 and λ 5 after synthesis can not directly be received need to use a reflector plate 304 by the stimulated light λ 4 and λ after synthesis
5 reflex to third optical filter 303, and reflector plate 304 need to be arranged it is angled, so as to make to penetrate third optical filter
The exit direction phase of the exit direction of stimulated light λ 4 and λ 5 after 303 and the stimulated light λ 6 after the reflection of third optical filter 303
Together, so that stimulated light λ 4, λ 5 and λ 6 be made to synthesize light beam.
Certainly, the exit direction of stimulated light λ 4, λ 5 and λ 6 after synthesizing shown in Fig. 3 are not single fixation,
It can be changed according to the angulation change of optical filter and reflector plate, to adapt to the needs of different application scene.
In the present embodiment, at least two optical filters according to preset shape permutation and combination may include four, five even
More optical filters.When including four optical filters, the mode of permutation and combination can be to be arranged in a linear or in quadrangle；When
When including five optical filters, the mode of permutation and combination can be to be arranged in a linear or pentagon；When including more optical filters,
Mode of its permutation and combination and so on, linear or polygon, can also specifically set according to different application scenarios.
At this point, four, five even more optical filters are when being arranged in a linear, difference is excited the modes of photosynthesis light beam
Identical as three optical filters as described above synthesis mode of light beam, i.e., each optical filter reflects its corresponding light emitting region
The stimulated light of transmitting, also, according to the arrangement order of the optical filter, the previous filter transmission of the latter filter transmission or
The stimulated light of reflection, for synthesizing and exporting the stimulated light.
When four optical filters are in quadrangular array, it is necessary to two reflector plates are set to change the exit direction of light,
To be excited photosynthesis light beam for four.For example, by the first stimulated light λ 4 and the second optical filter after the reflection of the first optical filter
The second stimulated light λ 5 after reflection carries out light combination, obtains the first light combination, is then oriented to the first light combination using first reflector plate
Third optical filter in the optical path of third stimulated light λ 6, and make to be excited by the first light combination after third optical filter and third
Light λ 6 synthesizes light beam, to obtain the second light combination, recycles second reflector plate that the second light combination guiding is located at the 4th and is excited
The 4th optical filter in the optical path of light λ 7 makes to synthesize by the second light combination after the 4th optical filter with the 4th stimulated light λ 7 a branch of
Light so that four stimulated lights are synthesized together, and is exported to subsequent lens.
Certainly, in other embodiments of the invention, the two reflector plates can also be set otherwise, such as by this
Two reflector plates are arranged between the second optical filter and third optical filter, at this point, the first optical filter and the outgoing of the second optical filter
Be excited the first light combination of photosynthesis, the second light combination of photosynthesis is excited in third optical filter and the outgoing of the 4th optical filter, is located at second
Two reflector plates between optical filter and third optical filter change in the direction of the first light combination twice, to go out with the second light combination
It is identical to penetrate direction, and then the first light combination and the second light combination i.e. four are excited photosynthesis light beam.
Similarly, the case where multiple optical filters are in pentagon or even polygon and so on.
In addition, a lens are provided between each light emitting region and corresponding optical filter, for assembling collimation institute
The stimulated light of light emitting region outgoing is stated, and transmits it to corresponding optical filter.As third light emitting region 2043 and first are filtered
It is provided with a lens between piece 201, is also equipped with a lens between the first light emitting region 2041 and the first optical filter 202, is used for
It assembles and collimates and transmit stimulated light.The shooting angle of stimulated light can not only be adjusted by assembling collimation stimulated light by lens, moreover it is possible to
It is enough to make keeping parallelism between each stimulated light as needed.
Optical system provided in this embodiment, it is described including at least two optical filters according to preset shape permutation and combination
Optical filter receives the stimulated light of Same Wavelength conversion sheet difference light emitting region transmitting, and according to the arrangement order of the optical filter,
The previous filter transmission of the latter filter transmission or the stimulated light of reflection are synthesized with this and are exported stimulated light.With it is existing
Technology is compared, and the present invention is achieved that different stimulated lights only with one wavelength conversion sheet and less optical filter
Synthesis and output, structure is simpler, and cost is lower.
Embodiment two
Present embodiments provide a kind of light emitting device, comprising: at least two light source of optical system provided by the above embodiment
And the control circuit being connected at least two light source, wherein the optical system includes having a wavelength conversion sheet
Wavelength converter and at least two optical filters according to preset shape permutation and combination.
In the present embodiment, it is preferred that there are three light emitting regions for the wavelength conversion sheet tool in optical system, as shown in figure 4, wave
Long conversion sheet 410 includes not overlapping and in the first light emitting region 4101 of concentric ring-shaped distribution, the second light emitting region 4102
With third light emitting region 4103, first light emitting region 4101 has first wave length transition material, second light emitting region
4102 have second wave length transition material, and the third light emitting region 4103 has third wavelength conversion material.
Specifically, wavelength conversion sheet 410 is fluorescent wheel, has the fluorescent powder of at least two different colours on the fluorescent wheel,
I.e. first wave length transition material, second wave length transition material and third wavelength conversion material be different colours fluorescent powder, such as it is red
Color fluorescent powder, blue colour fluorescent powder or green emitting phosphor.These three fluorescent powders are converted into different colours after absorbing exciting light
Stimulated light, such as feux rouges, blue light and green light.
In addition, as shown in figure 4,4103 edge of the first light emitting region 4101, the second light emitting region 4102 and third light emitting region
Center of circle outwardly direction is successively arranged, it is preferred that the launching efficiency of the wavelength conversion material of previous light emitting region is higher than latter
The launching efficiency of the wavelength conversion material of a light emitting region, the i.e. excitation of first wave length transition material in the first light emitting region 4101
Efficiency highest, the launching efficiency of third wavelength conversion material is minimum in third light emitting region 4103.This is because launching efficiency is got over
Low, the temperature of the wavelength conversion material after being excited is higher, since the area of third light emitting region is maximum, it radiates best,
So as to preferably reduce the temperature of the third wavelength conversion material after being excited.
Since the exciting light correspondence of each light source transmitting is incident on the light emitting region, and different light sources pair
Answer different light emitting regions, therefore, the number of light source is also three in the present embodiment, as shown in figure 5, include first light source 501,
Second light source 502 and third light source 503, and the first exciting light λ 1 that first light source 501 emits is incident on the first light emitting region
The first stimulated light λ 4 is generated on 4101 first wave length transition material, the second exciting light λ 2 that second light source 502 emits is incident on
The second stimulated light λ 5 is generated on the second wave length transition material of second light emitting region 4102, the third that third light source 503 emits swashs
The λ 3 that shines is incident on generation third stimulated light λ 6 on the third wavelength conversion material of third light emitting region 4103.Wherein, Mei Geguang
Source may include one or more luminescent devices.
In the present embodiment, first light source 501, second light source 502 and third light source 503 are identical luminescent device, the hair
Optical device is laser, and the first exciting light λ 1, the second exciting light λ 2 and the third exciting light λ 3 of transmitting are the light of phase co-wavelength
Line.Certainly, in other embodiments of the invention, first light source 501, second light source 502 and third light source 503 can also use
Different luminescent devices, such as laser and light emitting diode, as long as it can be inspired with corresponding wavelength conversion material needs
The stimulated light wanted.
Light emitting device in the present embodiment further include: the control circuit being connected at least two light source, i.e., with first
The control circuit that light source 501, second light source 502 are connected with third light source 503, for control these three light sources according to it is certain when
Sequence emits exciting light, so that the wavelength conversion material is issued stimulated light according to certain timing, to form the tool of different colours
There is the stimulated light of timing；Or control first light source 501, second light source 502 and third light source 503 emit exciting light, shape simultaneously
At the white light of no timing.
The light emitting device provided in the present embodiment can be come by the length for the control signal time that control circuit issues
Switching time and the switch speed of different light sources are controlled, to control the switch speed of different colours stimulated light, therefore, Ke Yi great
Amplitude improves the switch speed of different colours stimulated light, so as to completely eliminate rainbow effect.
Optical system in the present embodiment further include: each described according to three optical filters of preset shape permutation and combination
Optical filter receives the stimulated light of light emitting region transmitting, and different optical filters corresponds to different light emitting regions, such as Fig. 5 institute
Show, optical filter 504,505 and 506 receives respectively and reflect the first light emitting region 4101, the second light emitting region 4102 and third hair
The stimulated light that light region 4103 emits, also, the stimulated light λ 4 of 505 transmission filter 504 of optical filter reflection, optical filter 506 are saturating
The stimulated light λ 4 and λ 5 of 504 transmission or reflection of optical filter are penetrated, and with the stimulated light λ 6 of itself reflection, is exported after synthesizing light beam
To lens 512 and dodging device 513.
Optical filter 503,504 and 505 and the light source 501,502 and 503 in the present embodiment, in the optical system
In the same side of the wavelength conversion sheet 410, and the optical filter is located between corresponding light source and wavelength conversion sheet, this
When, the optical filter is the optical filter of the exciting light of the transmission light source transmitting, and exciting light can be made to pass through the optical filter
It is incident on wavelength convert on piece；Alternatively, the optical filter is the optical filter with through-hole, the light source is transmitted by the through-hole
The exciting light of transmitting.
As shown in fig. 6, when the first exciting light λ 1 is same or similar with the wavelength of the first stimulated light λ 4, the first optical filter
504 have through-hole 5041, make the first exciting light λ 1 by through-hole 5041 through the first optical filter 504, the first stimulated light λ 4 still by
The reflection of first optical filter 504, so that the first exciting light λ 1 and the first stimulated light λ 4 will not be made to mix, influences Projection Display
Image effect.Also, there is the optical filter of through-hole can be applied in any embodiment of the invention for this.
In the present embodiment, also there are at least two lens, also, each between the optical filter and the wavelength conversion sheet
Lens are used to assemble the stimulated light of one light emitting region of collimation transmitting, and different lens correspond to different light emitting regions, because
This, lens are three in the present embodiment, and the lens can be single lens or lens group.Wherein, lens 507,508 and 509
It is respectively used to assemble the first stimulated light λ 4 of collimation, the second stimulated light λ 5 and third stimulated light λ 6, and outputs this to corresponding filter
Mating plate.
As shown in figure 5, first light source 501, optical filter 504 and lens 507 along the first exciting light λ 1 exit direction successively
Arrangement, the exit direction of second light source 502, optical filter 505 with lens 508 along the second exciting light λ 2 are arranged successively, third light source
503, exit direction of the optical filter 506 with lens 509 along third exciting light λ 3 is arranged successively, and it is entirely located in wavelength convert dress
The same side of piece 410.
In the present embodiment, optical filter 504,505 and 506 can be arranged successively along straight line, can also be arranged successively into
Triangle further includes certainly reflector plate when according to rounded projections arranged, for by the stimulated light λ 4 of 505 transmission or reflection of optical filter
Optical filter 506 is reflexed to λ 5.
Also, when three optical filters are arranged along straight line, corresponding three light sources, three lens and three swash
Luminous incidence point is also arranged according to straight line respectively, when three optical filter rounded projections arrangeds, similarly, corresponding three light
The incidence point in source, three lens and three exciting lights is also respectively according to rounded projections arranged.
By taking three optical filters are in straight line as an example, as shown in figure 5, synthesizing and exporting the detailed process of stimulated light are as follows: by
It is transmissive to the first exciting light λ 1 in optical filter 504, therefore, the first exciting light λ 1 that first light source 501 emits can be through filtering
Mating plate 504 and lens 507 are incident on the first light emitting region 4101 of wavelength conversion sheet 410, make first wave length transition material
The first stimulated light λ 4 is generated, after the reflection of wavelength conversion sheet 410, is assembled by lens 507 and collimates and be incident on optical filter 504,
Since optical filter 504 can reflect the first stimulated light λ 4, the first stimulated light λ 4 is reflected to optical filter 505, due to filtering
Piece 505 and optical filter 506 are transmissive to the first stimulated light λ 4, and therefore, the first stimulated light λ 4 enters lens 512；
Similarly, the second stimulated light λ 5 that the second exciting light λ 2 that second light source 502 emits is generated is anti-by optical filter 505
It penetrates, after the transmission of optical filter 506, into lens 512；The second stimulated light λ that the third exciting light λ 3 that third light source 503 emits is generated
6, after the reflection of optical filter 506, into lens 512.
First stimulated light λ 4, the second stimulated light λ 5 and the second stimulated light λ 6 are exported after lens 512 assemble collimation to even
Electro-optical device 513, then after dodging device 513 carries out even light, collimated collimated simultaneously inputs TIR(Total
Internal Reflection, total internal reflection) in prism, then pass through DMD(Digital Mirror Device, number is micro-
Mirror device) chip carry out color treatments after, be incident on projection lens, carry out the display of projected image.
In the present embodiment, the switch speed between different colours stimulated light depends on the switch speed of different light sources, therefore,
The switching between different colours stimulated light may be implemented in wavelength conversion sheet 410 without rotation.But in order to avoid swashing
Shine the phenomenon that being persistently incident on the same position of fluorescent wheel and fluorescent powder is caused to quench, and therefore, the wavelength in the present embodiment turns
Change what piece 410 was still rotated.Therefore, the light emitting device in this implementation further includes being connected with wavelength conversion sheet 410
Driving device 411, for driving wavelength conversion sheet 410 along central axis rotation, such as the direction of the arrow in Fig. 4 among annulus, but
It is that the size of revolving speed will not have an impact the switch speed between different colours stimulated light, therefore, even if its revolving speed
It is very low, projection-display image will not be made to generate rainbow effect.
Light emitting device provided in this embodiment, has at least two light sources, and the exciting light of each light source transmitting enters
It is mapped on a kind of wavelength conversion material, and different light sources corresponds to different wavelength conversion material, so as to pass through control electricity
Road controls the switching between different light sources, so that different wavelength conversion material is generated stimulated light, realizes different colours stimulated light
Between alternating variation, substantially increase switch speed, rainbow effect can be completely eliminated, improve the matter of projection-display image
Amount.
Also, light emitting device provided in this embodiment, wavelength conversion sheet and less optical filter only with one,
It is achieved that the synthesis and output of different stimulated lights, structure is simpler, and cost is lower, more conducively the extensive use of cost device.
Embodiment three
A kind of light emitting device is present embodiments provided, principle is same as the previously described embodiments, the difference is that light source
And positional relationship of optical system etc., specifically, as shown in fig. 7, first light source 701, second light source 702 and third light source
703 are located at the two sides of wavelength conversion sheet 710 with optical filter 707,708 and 709, wherein since optical filter 707 only reflects the
Therefore one stimulated light λ 4 can be reflector plate 4.
Also, lens 704,705 and 706 be located at corresponding optical filter (or reflector plate) and wavelength conversion sheet 710 it
Between, i.e., as shown in fig. 7, lens 704 and reflector plate 707 positioned at the same side are successively arranged along the exit direction of the first exciting light λ 1
Column, lens 705 and optical filter 708 be arranged successively along the exit direction of the second exciting light λ 2, and lens 706 and optical filter 709 are along the
The exit direction of three exciting light λ 3 is arranged successively.
In the present embodiment, the structure of wavelength conversion sheet 710 is identical as the structure of two medium wavelength conversion sheet 410 of embodiment, i.e.,
The first light emitting region, the second light emitting region and third light emitting region on wavelength convert load 710 are distributed in concentric ring-shaped,
Its application process is also identical as embodiment two.
Certainly, the wavelength conversion sheet that other structures can be used in other embodiments of the invention, for example, using multistage
The wavelength conversion sheet of structure, as shown in figure 8, including the first light emitting region for not overlapping and being located at the different zones of same annulus
8101, the second light emitting region 8102, third light emitting region 8103, driving device 811 need to drive wavelength conversion sheet 810 default
It rotates, i.e., is rotated according to the direction that arrow in such as Fig. 8 indicates back and forth within the scope of angle, θ, to make swashing for same light source
It shines and is incident on Same Wavelength transition material, the exciting light of different light sources is incident on different wavelength conversion material.
Equally, in the present embodiment, reflector plate 707, optical filter 708 and 709 can be arranged successively along straight line, can also be with
Be arranged successively into triangle, further include another reflector plate when according to rounded projections arranged certainly, for optical filter 708 to be transmitted or
The stimulated light λ 4 and λ 5 of reflection reflex to optical filter 709.
By taking three optical filters are in straight line as an example, the light emitting device in the present embodiment synthesizes and exports the specific of stimulated light
Process are as follows: the first exciting light λ 1 that first light source 701 emits is incident on the first light emitting region 7101 of wavelength conversion sheet 710,
First wave length transition material is set to generate the first stimulated light λ 4, first stimulated light λ 4 is incident on after lens 704 assemble collimation
Reflector plate 707 reaches optical filter 708, since optical filter 708 and optical filter 709 are transmissive to after the reflection of reflector plate 707
First stimulated light λ 4, therefore, the first stimulated light λ 4 enter lens 712；
And the second exciting light λ 2 that second light source 702 emits, it is incident on the second light emitting region 7102 of wavelength conversion sheet 710
On, so that second wave length transition material is generated the second stimulated light λ 5, second stimulated light λ 5 enters after lens 705 assemble collimation
It is mapped to optical filter 708, optical filter 709 is reached after the reflection of optical filter 708, is excited since optical filter 709 is transmissive to second
Light λ 5, therefore, the second stimulated light λ 5 enter lens 712；
Similarly, the third stimulated light λ 6 that third exciting light λ 1 is generated assembles collimation by lens 706, optical filter 709 reflects
Afterwards, into lens 712；
First stimulated light λ 4, the second stimulated light λ 5 and the second stimulated light λ 6 are exported after lens 712 assemble collimation to even
Electro-optical device 713, then after dodging device 713 carries out even light, collimated collimated is simultaneously inputted in TIR prism, is then passed through
After crossing dmd chip progress color treatments, it is incident on projection lens.
Light emitting device provided in this embodiment, has at least two light sources, and the exciting light of each light source transmitting enters
It is mapped on a kind of wavelength conversion material, and different light sources corresponds to different wavelength conversion material, so as to pass through control electricity
Road controls the switching between different light sources, so that different wavelength conversion material is generated stimulated light, realizes different colours stimulated light
Between alternating variation, substantially increase switch speed, rainbow effect can be completely eliminated, improve the matter of projection-display image
Amount.
Also, light emitting device provided in this embodiment, wavelength conversion sheet and less optical filter only with one,
It is achieved that the synthesis and output of different stimulated lights, structure is simpler, and cost is lower, more conducively the extensive use of cost device.
Example IV
A kind of optical projection system is present embodiments provided, including the light emitting device that any of the above-described embodiment provides, the present embodiment
The optical projection system of offer controls the switching between different light sources by control circuit, realizes cutting between different colours stimulated light
It changes, switch speed is fast, no rainbow effect, and projection-display image quality is high.Also, optical projection system provided in this embodiment, structure
Simpler, cost is lower, more conducively the extensive use of cost device.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (14)
1. a kind of optical system characterized by comprising
Wavelength converter with a wavelength conversion sheet, the wavelength conversion sheet have at least two light emitting regions, and every
A light emitting region has a kind of wavelength conversion material, and different light emitting regions has different wavelength conversion material；
According at least two optical filters of preset shape permutation and combination, the line at the center of at least two optical filter and light out
The optical path in direction is parallel, and each optical filter receives the stimulated light of light emitting region transmitting, and different optical filters is corresponding
Different light emitting regions, wherein each optical filter reflects the stimulated light of its corresponding light emitting region transmitting, also, according to
The stimulated light of the arrangement order of the optical filter, the previous filter transmission of the latter filter transmission or reflection, for synthesizing
And export the stimulated light；
Wherein, at least two light emitting region is distributed in concentric ring-shaped, and at least two light emitting region is outside along the center of circle
Direction successively arrange, wherein the launching efficiency of the wavelength conversion material of previous light emitting region be higher than the latter light emitting region
Wavelength conversion material launching efficiency.
2. optical system according to claim 1, which is characterized in that described according at least the two of preset shape permutation and combination
A optical filter specifically:
At least two optical filter is arranged successively along straight line.
3. optical system according to claim 1, which is characterized in that when at least two optical filter is three optical filters
When, at least two optical filters according to preset shape permutation and combination specifically:
Three optical filters are arranged successively composition triangle.
4. optical system according to claim 3, which is characterized in that when at least two optical filter is three optical filters
When, the optical system includes the first optical filter, the second optical filter and third optical filter, wherein the optical system further includes
Reflector plate, for the stimulated light of second filter transmission or reflection to be reflexed to third optical filter.
5. optical system according to claim 4, which is characterized in that each light emitting region and corresponding optical filter it
Between be provided with a lens, for assembling the stimulated light for collimating light emitting region outgoing, and transmit it to corresponding optical filtering
Piece.
6. a kind of light emitting device characterized by comprising
The described in any item optical systems of claim 1-5, the optical system include the wavelength with a wavelength conversion sheet
Conversion equipment and at least two optical filters according to preset shape permutation and combination, the wavelength conversion sheet have at least two hairs
Light region, and each light emitting region has a kind of wavelength conversion material, different light emitting regions has different wavelength convert materials
Material；
At least two light sources, corresponding one for being incident on the wavelength conversion sheet of the exciting light of each light source transmitting is described to shine
On region, and different light sources corresponds to different light emitting regions.
7. light emitting device according to claim 6, which is characterized in that the light emitting device further include:
The control circuit being connected at least two light source, for control at least two light source separately or concurrently emit swash
It shines, the wavelength conversion material is made separately or concurrently to issue stimulated light.
8. light emitting device according to claim 7, which is characterized in that the optical filter and the light source are located at described
The two sides of wavelength conversion sheet.
9. light emitting device according to claim 7, which is characterized in that the optical filter and the light source are located at the wavelength
The same side of conversion sheet, and the optical filter is between the wavelength conversion sheet and corresponding light source.
10. light emitting device according to claim 9, which is characterized in that when the optical filter is located at the wavelength conversion sheet
When between corresponding light source, the optical filter is the optical filter of the exciting light of the transmission light source transmitting；Or for through-hole
Optical filter, the exciting light of light source transmitting is transmitted by the through-hole.
11. the light emitting device according to claim 8 or 10, which is characterized in that the optical filter and the wavelength conversion sheet
Between also there are at least two lens, each lens are used to assemble the stimulated light of one light emitting region of collimation transmitting, and different
Lens correspond to different light emitting regions.
12. light emitting device according to claim 11, which is characterized in that at least two light emitting region is in concentric loop
Shape distribution.
13. light emitting device according to claim 12, which is characterized in that at least two light emitting region is outside along the center of circle
Direction successively arrange, wherein the launching efficiency of the wavelength conversion material of previous light emitting region be higher than the latter light emitting region
Wavelength conversion material launching efficiency.
14. a kind of optical projection system, which is characterized in that including such as described in any item light emitting devices of claim 6-13.
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| CN113154336B (en) * | 2016-02-05 | 2022-11-11 | 深圳光峰科技股份有限公司 | Light spot compression structure and light source device |
| CN106873296B (en) * | 2017-04-05 | 2020-03-31 | 苏州佳世达光电有限公司 | Projection system |
| CN109212873A (en) * | 2017-06-29 | 2019-01-15 | 无锡视美乐激光显示科技有限公司 | A kind of dynamic wavelength conversion equipment and method that can guarantee brightness and colour gamut simultaneously |
| CN113934096B (en) * | 2018-04-19 | 2023-08-04 | 深圳光峰科技股份有限公司 | Light source system, projection equipment and color wheel |
| CN113966024B (en) * | 2021-12-21 | 2022-03-18 | 广州光联电子科技有限公司 | Laser adjusting method and device and laser system |
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| CN102645826A (en) * | 2011-11-10 | 2012-08-22 | 深圳市光峰光电技术有限公司 | Light source system, illuminating device and projecting device |
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| US9816683B2 (en) * | 2011-10-20 | 2017-11-14 | Appotronics Corporation Limited | Light sources system and projection device using the same |
| CN103076712B (en) * | 2011-10-26 | 2015-05-27 | 深圳市光峰光电技术有限公司 | Projection light source and projection device using same |
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