CN106909019A - A kind of light-emitting device and optical projection system - Google Patents
A kind of light-emitting device and optical projection system Download PDFInfo
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- CN106909019A CN106909019A CN201510979592.0A CN201510979592A CN106909019A CN 106909019 A CN106909019 A CN 106909019A CN 201510979592 A CN201510979592 A CN 201510979592A CN 106909019 A CN106909019 A CN 106909019A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2013—Plural light sources
-
- 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
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2066—Reflectors in illumination beam
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2073—Polarisers in the lamp house
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
Abstract
The invention discloses a kind of light-emitting device, it includes the first array of source, secondary light source array, closing light cell array.Closing light cell array is arranged between the first array of source and secondary light source array, and closing light cell array includes at least one closing light unit, and closing light unit includes reflection unit and transflection device.First light source of the invention launches to reflection unit the first light, secondary light source launches to transflection device the second light, first light is reflexed to transflection device by reflection unit, transflection device transmits the first light and reflects the second light, so that at least partly being overlapped from first light and the second light of transflection device outgoing so as to form closing light and along predetermined direction outgoing, using the polarization characteristic of light, and the combination of reflection unit and transflection device, the distance between hot spot that light-emitting device can be ultimately formed compresses, reduce the bore of collector lens in subsequent optical path, reduce the overall volume of light-emitting device.
Description
Technical field
The present invention relates to optical field, and in particular to a kind of light-emitting device and optical projection system.
Background technology
, it is necessary to many simultaneously luminous rear outgoing of solid-state light emitting elements just can guarantee that in high-power light supply apparatus
Its high power, and requiring the hot spot of emergent light, small (hot spot is smaller, and optical density is bigger, in unit area
Power is higher), and in order to realize that many light of solid-state light emitting element transmitting can be existing with less hot spot outgoing
The light that many solid-state light emitting elements send is pressed using closing light element for conventional being achieved in that in having technology
Contracting.As shown in figure 1, the closing light element 02 of prior art includes the reflection mirror array of multiple V-arrangement arrangements, the
The closing light element 02 that one solid state light emitter array 01 and the second solid state light emitter array 03 are arranged by V-arrangement respectively will
The photosynthetic outgoing in same light path.Hot spot compression is carried out by the closing light element 02 shown in Fig. 1 so that light source
The overall volume of device is larger, and follow-up light extraction light path needs to carry out light collection using big collector lens,
The volume of collector lens is also larger, so as to the whole light channel structure for causing light supply apparatus occupies larger volume, no
Beneficial to follow-up light path treatment and the layout of entirety.
The content of the invention
According to an aspect of the present invention, there is provided a kind of light-emitting device, it includes the first array of source, the second light
Source array, closing light cell array.First array of source ranked first light source group, the first light source group including at least one
Including at least one first light sources, the first light source is used to launch the first light；Secondary light source array includes at least one
Light source group is ranked second, secondary light source group includes at least one secondary light source, and secondary light source is used to launch the second light.
Secondary light source array and the first array of source are parallel to each other in face of setting, and first light source and one second
Light source correspondence one light source pair of composition, the light beam that first light source and secondary light source of each light source centering send it
Between have preset distance dislocation.
Closing light cell array is arranged between the first array of source and secondary light source array, closing light cell array bag
At least one closing light unit is included, each light source pair is corresponding with a predetermined closing light unit.Closing light unit includes
Reflection unit and transflection device, reflection unit are arranged on the light path of the light beam of corresponding the first light source transmitting
On, for reflecting the first incident light；Transflection device is arranged on first after reflected device reflects
In the light path of light, while also be located in the light path of the light beam of corresponding secondary light source transmitting, for entering
The first light penetrated is transmitted and the second incident light is reflected.Reflection unit and transflection device relative to
First light and the second light have predetermined incident angle to cause the first light for being transmitted from transflection device and from transflection
The hot spot that second light of device reflection is all propagated along predetermined closing light direction and the first light and the second light are formed is extremely
It is rare to partially overlap, so as to export the closing light of the first light and the second light.
First light source of the invention launches to reflection unit the first light, and secondary light source launches to saturating second light
First light is reflexed to transflection device by deinstall, reflection unit, and transflection device transmits the first light and reflection second
Light so that at least partially overlapped so as to form closing light and edge from first light and the second light of transflection device outgoing
Predetermined direction outgoing.
Further, in the light-emitting device of prior art, the distance between each closing light structure is apart from each other,
The present invention is equal to the second ginseng by by the value of the first reference distance of closing light unit, the second reference distance
The radius value of light is examined, can cause that the distance between adjacent closing light unit reaches minimum, so that luminous dress
Put the distance between hot spot for ultimately forming to be compressed, the bore of collector lens in subsequent optical path can be reduced,
Reduce the overall volume of light-emitting device.
Brief description of the drawings
Fig. 1 is the closing light cellular construction schematic diagram of prior art；
Fig. 2 is the luminous device structure schematic diagram of the embodiment of the present invention one；
Fig. 3 is the closing light cellular construction schematic diagram of the embodiment of the present invention one；
Fig. 4 is the first array of source, secondary light source array, the closing light cell array of the embodiment of the present invention one
Relative position relation schematic diagram；
Fig. 5 is the closing light cellular construction schematic diagram of the embodiment of the present invention two；
Fig. 6 is the closing light cellular construction schematic diagram of the embodiment of the present invention three；
Fig. 7 be the laser facula of the second light it is long while correspondence polarizer it is narrow while schematic diagram；
Fig. 8 is the luminous device structure schematic diagram of the embodiment of the present invention four；
Fig. 9 for the embodiment of the present invention four the second light laser facula it is long while correspondence polarizer it is long while illustrate
Figure；
Figure 10 is the luminous device structure schematic diagram of the embodiment of the present invention five；
Figure 11 is the closing light principle schematic of the embodiment of the present invention six；
Figure 12 is the closing light principle schematic of the embodiment of the present invention seven；
Figure 13 is the closing light principle schematic of the embodiment of the present invention eight；
Figure 14 is the closing light principle schematic of the embodiment of the present invention nine.
Specific embodiment
The present invention is described in further detail below by specific embodiment combination accompanying drawing.
Invention thought of the invention is the first array of source and that will be oppositely arranged by closing light cell array
Two array of source carry out closing light, included by the first light source and secondary light source array included by the first array of source
Secondary light source form light source pair, the first light of the first light source transmitting is by the reflection unit of closing light cell array
Reflex on first direction, the second light of secondary light source transmitting is reflected by the transflection device of closing light cell array
Onto first direction, while transflection device first light of the transmission from reflection unit so that the light source is to outgoing
The hot spot of light at least partially overlaps, and on the one hand this kind of compress mode causes small (each light of hot spot of emergent light
The optical axis in source pair is essentially coincided) so that light-source brightness is high, on the other hand causes that the small volume of light-emitting device (is closed
The small volume of light unit array).
Embodiment one：
The light-emitting device of the present embodiment includes the first array of source, secondary light source array, closing light cell array.
As shown in Fig. 2 the first array of source ranked first light source group 10, a first light source group including at least one
10 include at least one first light sources 101.Secondary light source array and the first array of source are parallel to each other in face of setting
Put, i.e., plane where secondary light source array is parallel to plane where the first array of source.Secondary light source array bag
Include at least one and ranked second light source group 20, a secondary light source group 20 includes at least one secondary light source 201.One
Individual first light source 101 and secondary light source 201 correspondence one light source pair of composition, the of each light source centering
Dislocation with preset distance between the light beam that one light source 101 and secondary light source 201 send.First light source 101
Can be shoot laser with secondary light source 201.
First array of source 10 includes multiple first light sources 101 arranged according to row and column, secondary light source array
20 include the multiple secondary light sources 201 arranged according to row and column, identical or adjacent position coordinate one first
Light source 101 and correspondence one light source pair of composition of secondary light source 201, the first light source of each light source centering
101 and all dislocation with preset distance on row and column of the light beam that sends of secondary light source 201.Specifically,
In one array of source, each first light source composition on the direction perpendicular with the direction of the first light source group 10 is at least
One the first light source row of row, first light source row includes at least one first light sources 101.In secondary light source array,
Each secondary light source 201 on the direction perpendicular with the direction of secondary light source group 20 constitutes at least second light of row
Source arranges, and a secondary light source row include at least one secondary light source 201.So as to the first light source 101 is first
In array of source and secondary light source 201 be all in secondary light source array it is horizontal embark on journey, it is perpendicular in column, neat row
Cloth.In the first light source group 10, light of the spacing more than the first light/the second light between adjacent two first light sources
Beam diameter value；In secondary light source group 20, the spacing between adjacent two secondary light source is more than the first light/the second
The beam diameter value of light.
Closing light cell array is arranged between the first array of source and secondary light source array, closing light cell array bag
At least one closing light unit 30 is included, each light source pair is corresponding with a predetermined closing light unit 30, adjacent closing light
There is the dislocation of preset distance between unit 30 and the first array of source is moved closer to along closing light direction.Closing light list
Unit 30 includes reflection unit and transflection device, and the reflection unit of the present embodiment specifically uses speculum 301, thoroughly
Deinstall specifically uses polarizer 302.Speculum 301 is arranged on the light beam of corresponding the first light source transmitting
Light path on, for reflecting the first incident light, it is anti-that polarizer 302 is arranged on reflected mirror 301
In the light path of the first light after penetrating, while also be located in the light path of the light beam of corresponding secondary light source transmitting,
For being transmitted to the first incident light and the second incident light is reflected, speculum 301 and polarization
Piece 302 has predetermined incident angle to cause what is transmitted from polarizer 302 relative to the first light and the second light
First light and the second light from the reflection of polarizer 302 are all propagated and optical axis coincidence along predetermined closing light direction, from
And export closing light.Fig. 2 simply exemplarily presents a first light source group 10 and a secondary light source group 20,
The quantity of speculum 301 is consistent with the quantity of the first light source 101 of the first light source group 10, and each speculum
301 and first light source group 10 each first light source 101 correspond set.The quantity of polarizer 302 with should
The quantity of the secondary light source 201 of secondary light source group 20 is consistent, and each polarizer 302 and secondary light source group 20
Each secondary light source 201 correspond set.
Speculum 301 and polarizer 302 can be designed to strip, then a closing light unit 30 and same row
Light source to corresponding, i.e., one speculum 301 is correspondingly arranged with first light source row, a polarizer
302 are correspondingly arranged with a secondary light source row.
It is the direction parallel to plane where the first array of source to define first direction, in Fig. 2, first direction
Specially level direction to the right.
The opposite direction in the first direction of speculum 301 is obliquely installed to the direction for moving closer to the first array of source；
Polarizer 302 is obliquely installed to the direction for moving closer to the first array of source in the first direction.It is excellent as one kind
The mode of choosing, the incidence angle of the light beam on speculum 301 of the transmitting of the first light source 101 of the present embodiment is 45
Degree, incidence angle of the light beam that secondary light source 201 is launched on polarizer 302 is also 45 degree, speculum 301
And the angle between polarizer 302 is 135 degree, thus speculum 301 be specifically configured to first direction into
145 degree of angles, polarizer 302 is set to first direction in angle of 45 degrees.
It is the first reference light to define by the first light that speculum 301 reflexes to polarizer 302.
In a closing light unit 30, speculum 301 is caused by polarizer 302 with the setting of polarizer 302
It is the second reference light that first light of transmission overlaps with the second light reflected by polarizer 302, and by polarizer 302
The optical axis coincidence of the first light of transmission and the second light reflected by polarizer 302.
As shown in figure 3, defining speculum 301 near the edge of plane where secondary light source array to reflect
Mirror lower edge, i.e. edge corresponding to end points a；With speculum lower edge in same on speculum 301
The edge at end is speculum top edge, i.e. edge corresponding to end points b.
Define polarizer 302 near the edge of plane where secondary light source array be polarizer lower edge, i.e.,
Edge corresponding to end points c；On polarizer 302 with polarizer lower edge in the edge of same one end be inclined
Shake piece top edge, i.e. edge corresponding to end points d.
In closing light unit 30, the distance of the optical axis of the first reference light to the top edge of speculum 301 is the first ginseng
Examine apart from A, both speculum lower edge and polarizer lower edge near the edge of secondary light source array to it is upper/
The distance of the optical axis of the second reference light of next closing light unit 30 outgoing is the second reference distance B.This implementation
In example, speculum 301 is identical with the size of polarizer 302, in symmetrical structure, therefore, speculum is following
Edge is identical with a distance from secondary light source array with both polarizer lower edges, under speculum lower edge and polarizer
The distance of edge to the optical axis of the second reference light of the outgoing of closing light unit 30 of up/down one is also identical, then and second
Reference distance B be speculum lower edge to the optical axis of second reference light of one closing light unit 30 of up/down away from
From, or, the second reference distance B is second ginseng of the polarizer lower edge to one closing light unit 30 of up/down
Examine the distance of the optical axis of light.
The vertical range between adjacent two closing lights unit 30 is defined for C, then adjacent two speculum 301 or polarization
Vertical range between piece 302 is also C, in order that the volume of light-emitting device reaches minimum, the value of C should be use up
Amount is small.
In the present invention, due to the size of the first light, the second light and speculum 301, polarizer 302 be in it is identical
Or Similar numbers level, therefore the first light, the second light are all the light beams with certain radius value, without being understood that
To ignore the light of size.To reach the purpose of the first light, the final closing light of the second light, it is preferable that the first light,
The radius of the second light is identical, in other embodiments, the first light, the second light radius can also be different.
The beam radius of the second reference light is defined for reference radius, in the present embodiment, the second reference light, first
Light, the second light beam radius it is identical.
The value for taking the first reference distance A is equal to reference radius value, if A ＞ B, C can be kept to take minimum
Value, but by previous closing light unit the outgoing of polarizer 302 the second reference light part light by latter closing light list
The reflective mirror 301 or polarizer 302 of unit are blocked, and cause light-emitting device light extraction efficiency low.
To make the second reference light of the outgoing of polarizer 302 of previous closing light unit not by the anti-of latter closing light unit
Light microscopic 301 or polarizer 302 are blocked, and can make A ＜ B, but can cause that C increases, and cause light-emitting device volume
Increase.
Therefore, when a=b, the desirable minimum values of C, light-emitting device reaches minimum volume, and light-emitting device goes out
Light efficiency is unaffected.
Therefore in the present embodiment, first light source 101, secondary light source 201, speculum 301, polarizer 302
Set and cause that the first reference distance A is equal to the second reference distance B.Specifically, the first reference distance A,
The value of two reference distance B is equal to reference radius value.
In the present embodiment, the speculum 301 of optic formation is rectangular shape, speculum top edge with it is anti-
Mirror lower edge is penetrated to be parallel to each other；The polarizer 302 of sheet form is also rectangular shape, polarizer top edge
It is parallel to each other with polarizer lower edge.
Plane that is perpendicular with plane where the first array of source and intersecting with the second reference light is the first plane,
Projection of first light source 101 projection on the first plane with corresponding secondary light source 201 on the first plane
Between have the first offset distance.It is perpendicular and equal with the second reference light with plane where the first array of source
Capable plane is the second plane；Projection of first light source 101 in the second plane and corresponding secondary light source 201
There is the second offset distance between projection in the second plane.Therefore, by first light source in Fig. 2
The relative position relation of group 10 and a secondary light source group 20 is visible, is investigated in the second plane, first
Light source 101 and secondary light source 201 are alternate settings.Similarly, by first light source row and one
The relative position relation of two light source rows will also realize that, investigate on the first plane, the first light source 101 and second
Light source 201 is also alternate setting.As shown in figure 4, as viewed from the perspective of plane where the first array of source
The relative position relation of the first array of source, secondary light source array and closing light cell array, it is seen that the first light
Source 101 and secondary light source 201 are all being laterally and longitudinally spaced.
The present invention is not limited to the first light with the type of the second light, and the first light and the second light can be had not
With polarization state, such as the first light can be P light, and the second light can be S light, or, the first light can be with
It is S light, the second light can be P light.
Embodiment two：
As shown in figure 5, the present embodiment is compared with embodiment one, its difference is, the speculum of the present embodiment
301 with polarizer 302 due to size difference or relative position relation so that speculum lower edge and polarizer
The distance of lower edge to secondary light source array is different, specifically, speculum lower edge from secondary light source array more
Closely, therefore, the second reference distance B be speculum lower edge to a upper closing light unit 30 the second reference light
Optical axis distance.The embodiment can rationally design the thickness of speculum and polarizer according to the actual requirements,
Need not ensure speculum all kept with polarizer as thickness and size, specifically, speculum is thicker,
After ensureing that the thickness of speculum reaches requirement, polarizer can be designed to it is as far as possible thin, therefore, it is possible to greatest extent
Material-saving, while the volume of whole system can be reduced.
Embodiment three：
As shown in fig. 6, the present embodiment is compared with embodiment one, its difference is, the speculum of the present embodiment
301 with polarizer 302 due to size difference or relative position relation so that speculum lower edge and polarizer
The distance of lower edge to secondary light source array is different, specifically, polarizer lower edge from secondary light source array more
Closely, therefore, the second reference distance B be polarizer lower edge to a upper closing light unit 30 the second reference light
Optical axis distance.The embodiment can rationally design the thickness of speculum and polarizer according to the actual requirements,
Need not ensure speculum all kept with polarizer as thickness and size, specifically, polarizer is thicker,
After ensureing that the thickness of polarizer reaches requirement, speculum can be designed to it is as far as possible thin, therefore, it is possible to greatest extent
Material-saving, while the volume of whole system can be reduced.
Example IV：
Due to the laser of the first light/the second just elliptical Gaussian beam, the polarizer of reflective mirror 301/ is irradiated to after collimation
Hot spot on 302 is one oval, therefore the efficiency of its closing light can be influenceed by closing light cell array.
In order that the first light and the second light have different polarization states, if simply by adjustment secondary light source 201
That is the direction of rotary laser obtains different polarization states, then as shown in fig. 7, the laser of the second light can be run into
Hot spot it is long while correspondence polarizer 302 it is narrow while situation, therefore polarizer 302 size then need increase, C
Can increase.
As shown in figure 8, the present embodiment sets half-wave plate 40 between secondary light source array and closing light cell array,
By means of half-wave plate 40, the polarization state 40 of the laser of the second light is changed by half-wave plate, but do not changed up and down
The orientation of two row's light sources, as shown in figure 9, the narrow side correspondence polarizer 302 of the laser facula in the second light
Narrow side while, obtain minimize C.
Similarly, it is also possible to half-wave plate is set between the first array of source and closing light cell array, by half-wave
Piece changes the polarization state of the laser of the first light, but does not change the orientation of two rows light source, first
The laser facula of light it is narrow while correspondence speculum it is narrow while while, obtain minimize C, each closing light unit
The distance between compressed, can further reduce the bore of collector lens in subsequent optical path, reduce whole
The volume of system.
Embodiment five：
Speculum of the invention 301 and polarizer 302 and first direction or with the first array of source/the second light
The angle of plane can be any angle for being more than zero where source array, as shown in Figure 10, the present embodiment and reality
Apply example one to compare, its difference is that the speculum 301 of the present embodiment is with polarizer 302 with first direction not
Into 145 ° or 45 °, therefore, the first reference light is also not parallel and first direction.Those skilled in the art can
According to actual conditions, to adjust the relative position relation of speculum 301 and polarizer 302 so that this implementation
In the first direction, this is this area routine techniques in the direction of second reference light by the outgoing of polarizer 302 of example,
Therefore do not repeat.The design of the present embodiment allows technical staff according to different product, different use occasions,
Rationally design light source makes relative to the incident direction of closing light unit and the relative position relation of each closing light unit
Obtain light-emitting device of the invention more flexible in application aspect.
Embodiment six：
As shown in figure 11, compared with embodiment one, its difference is the present embodiment, in the present embodiment, first
The first light that light source 101 sends has different beam diameters from the second light that secondary light source 201 sends, tool
Body ground, the beam diameter of the first light is bigger, it is preferable that the first light from the transmission of polarizer 302 with polarized
The optical axis coincidence of the second light of the reflection of piece 302, in other embodiments, the two optical axis can not also be weighed
Close, need to only ensure the first light beam and the second light light reflected by polarizer 302 from the transmission of polarizer 302
Beam partially overlaps, namely the first light from the transmission of polarizer 302 and second reflected by polarizer 302
The hot spot that light is formed partially overlaps.In the present embodiment, the first reference distance and the second reference distance
It is equal to the beam radius value of the first light.In some application scenarios, it is desirable to the first light and the second light in closing light
With different beam radius but optical axis coincidence, the design of the present embodiment can well meet such wanting
Ask so that light-emitting device of the invention has more wide application prospect.
Embodiment seven：
As shown in figure 12, compared with embodiment one, its difference is the present embodiment, in the present embodiment, first
The first light that light source 101 sends has different beam diameters from the second light that secondary light source 201 sends, tool
Body ground, the beam diameter of the second light is bigger, it is preferable that the first light from the transmission of polarizer 302 with polarized
The optical axis coincidence of the second light of the reflection of piece 302, in other embodiments, the two optical axis can not also be weighed
Close, need to only ensure the first light beam and the second light light reflected by polarizer 302 from the transmission of polarizer 302
Beam partially overlaps.In the present embodiment, the first reference distance is equal to the beam radius value of the first light, the
Two reference distances are equal to the beam radius value of the second light.
In the first light beam transmitted from polarizer 302 and both the second light reflected by polarizer 302 optical axis
Also in misaligned implementation method, the first reference distance still equal to the first light beam radius value, but second ginseng
The diameter for examining light may be different from the diameter of the second light, therefore the second reference distance is equal to the light of the second reference light
Beam radius value.
In some application scenarios, it is desirable to which the first light and the second light in closing light have different beam radius but light
Overlapping of axles, the design of the present embodiment can well meet such requirement so that luminous dress of the invention
Put with more wide application prospect.
Embodiment eight：
As shown in figure 13, compared with embodiment one, its difference is the present embodiment, in the present embodiment, first
The first light that light source 101 sends has different beam diameters from the second light that secondary light source 201 sends, tool
Body ground, the beam diameter of the second light is bigger, and from the first light of the transmission of polarizer 302 and by polarizer 302
The optical axis of the second light of reflection is misaligned so that from the first light beam of the transmission of polarizer 302 and by polarizer
Second smooth beam section of 302 reflections overlaps.In the present embodiment, the first reference distance is equal to the light of the first light
Beam radius value, the second reference distance is equal to the beam radius value of the second reference light.Due to the light of the second reference light
Beam diameter is differed with the beam diameter of the first light, the second light, therefore the second reference distance is not equal to second
The beam radius value of light.In some application scenarios, it is desirable to which the first light and the second light in closing light have different
Beam radius and optical axis is misaligned, the design of the present embodiment can well meet such requirement so that
Light-emitting device of the invention has more wide application prospect.
Embodiment nine：
As shown in figure 14, the first light that first light source 101 of the present embodiment sends sends with secondary light source 201
The second light there is identical beam radius r1, but, from polarizer 302 transmission the first light with polarized
The optical axis of the second light of the reflection of piece 302 is misaligned so that from first light beam and quilt of the transmission of polarizer 302
Second smooth beam section of the reflection of polarizer 302 overlaps.In the present embodiment, the first reference distance A is equal to
Beam radius the value r1, the second reference distance B of the first light are equal to the beam radius value of the second reference light.Due to
The beam diameter of the second reference light is differed with the beam diameter of the first light, the second light, therefore the second reference
It is not equal to the beam radius value of the second light or the first light apart from B, as can be seen, the second reference distance B is more than
r1.In some application scenarios, it is desirable to which the first light and the second light in closing light have identical beam radius but optical axis
Misaligned, the design of the present embodiment can well meet such requirement so that luminous dress of the invention
Put with more wide application prospect.
Light-emitting device of the invention, at least partly overlaps from the light of polarizer outgoing first and the second light so that the
The closing light of one light and the second light is more uniform, and closing light effect is more preferably, using the polarization characteristic of light and reflective
The distance between the combination of mirror and polarizer, the hot spot that can be ultimately formed light-emitting device compress, and improve hot spot
Filling rate, reduce subsequent optical path in collector lens bore, reduce light-emitting device overall volume.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to recognized
Fixed specific implementation of the invention is confined to these explanations.For the ordinary skill of the technical field of the invention
For personnel, without departing from the inventive concept of the premise, some simple deduction or replace can also be made.
Claims (10)
1. a kind of light-emitting device, it is characterised in that including the first array of source, secondary light source array, closing light
Cell array；
First array of source ranked first light source group including at least one, and the first light source group includes at least one
Individual first light source, first light source is used to launch the first light；
The secondary light source array ranked second light source group including at least one, and the secondary light source group includes at least one
Individual secondary light source, the secondary light source is used to launch the second light；
The secondary light source array and first array of source are parallel to each other in face of setting, and first light
Source and secondary light source one light source pair of corresponding composition, first light source and secondary light source of each light source centering
Dislocation with preset distance between the light beam for sending；
The closing light cell array is arranged between first array of source and the secondary light source array, institute
Stating closing light cell array includes at least one closing light unit, each light source pair and a predetermined closing light unit pair
Should；The closing light unit includes reflection unit and transflection device, and the reflection unit is arranged on corresponding
In the light path of the light beam of the first light source transmitting, for reflecting the first incident light；The transflection device
In the light path of the first light being arranged on after reflected device reflection, while also being located at corresponding secondary light source
In the light path of the light beam of transmitting, for being transmitted to the first incident light and the second incident light is carried out instead
Penetrate；The reflection unit and the transflection device have predetermined incident angle relative to the first light and the second light
To cause the second light reflected from the first light of transflection device transmission and from the transflection device all along predetermined
Closing light direction propagate and the hot spot that is formed of the first light and the second light at least partially overlaps, so as to export the
The closing light of one light and the second light.
2. device as claimed in claim 1, it is characterised in that
The reflection unit near the edge of the secondary light source array be reflection unit lower edge；Described
On reflection unit with the reflection unit lower edge in same one end edge be reflection unit top edge；
The transflection device near the edge of the secondary light source array be transflection device lower edge；Described
On transflection device with the transflection device lower edge in same one end edge be transflection device top edge；
Incide the transflection device the first light optical axis to the reflection unit top edge distance be first
Reference distance；
The first light transmitted by the transflection device is at least partly weighed with the second light reflected by the transflection device
The closing light that conjunction is obtained is the second reference light；Reflection of the optical axis of second reference light to next closing light unit
The distance of the lower edge of device and/or transflection device is the second reference distance.
3. device as claimed in claim 2, it is characterised in that
The value of second reference distance is equal to the radius value of second reference light.
4. device as claimed in claim 2, it is characterised in that
The value of first reference distance is equal to the radius value of the first light reflected by the reflection unit.
5. device as claimed in claim 2, it is characterised in that
The optical axis of the first light transmitted by the transflection device and the light by the second light of transflection device reflection
Overlapping of axles, so as to obtain the second reference light.
6. device as claimed in claim 5, it is characterised in that
The beam radius of the first light transmitted by the transflection device, the second light reflected by the transflection device
Beam radius and the second reference light beam radius it is equal；
Dislocation distance between adjacent closing light unit causes first reference distance, second reference distance
Value be equal to second reference light beam radius value.
7. device according to claim 1, it is characterised in that first light source is used to launch first
First light of polarization state, the secondary light source is used to launch the second light of the second polarization state；
The transflection device includes polarizer, and the first light that the polarizer is used for transmission of first-polarization-state is simultaneously anti-
Penetrate the second light of the second polarization state.
8. the device as described in claim any one of 1-6, it is characterised in that
In the first light source group, light of the spacing more than the first light/the second light between adjacent two first light sources
Beam diameter value；
In the secondary light source group, light of the spacing more than the first light/the second light between adjacent two secondary light source
Beam diameter value.
9. the device as described in claim any one of 1-6, it is characterised in that
First array of source includes multiple first light sources arranged according to row and column, the secondary light source battle array
Row include the multiple secondary light sources arranged according to row and column；
By first light source of beam emissions to same closing light unit and a secondary light source correspondence composition one
Light source pair, the light beam that first light source and secondary light source of each light source centering send has in advance on row and column
The dislocation of set a distance；
The light source of one closing light unit and same row is to corresponding.
10. the device as described in claim any one of 1-6, it is characterised in that
First array of source/be additionally provided between the secondary light source array and the closing light cell array
Half-wave plate；
The half-wave plate be used to changing the first light that first array of source/secondary light source array sends/
The polarization state of the second light, so that the narrow side correspondence reflection unit/transflection device of the first light/the second light
Narrow side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510979592.0A CN106909019A (en) | 2015-12-23 | 2015-12-23 | A kind of light-emitting device and optical projection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510979592.0A CN106909019A (en) | 2015-12-23 | 2015-12-23 | A kind of light-emitting device and optical projection system |
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| CN106909019A true CN106909019A (en) | 2017-06-30 |
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| CN201510979592.0A Pending CN106909019A (en) | 2015-12-23 | 2015-12-23 | A kind of light-emitting device and optical projection system |
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Address after: 518058 20-22 Floor, United Headquarters Building, No. 63 Xuefu Road, Yuehai Street, Nanshan District, Shenzhen City, Guangdong Province Applicant after: APPOTRONICS Corp.,Ltd. Address before: 518055 Shenzhen, Shenzhen, Guangdong 1089 Nanshan District road 1089, Shenzhen integrated circuit design application Industrial Park, 4 floor. Applicant before: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address after: 518055 Shenzhen, Shenzhen, Guangdong 1089 Nanshan District road 1089, Shenzhen integrated circuit design application Industrial Park, 4 floor. Applicant after: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address before: 518055 Shenzhen, Shenzhen, Guangdong 1089 Nanshan District road 1089, Shenzhen integrated circuit design application Industrial Park, 4 floor. Applicant before: APPOTRONICS Corp.,Ltd. |
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Application publication date: 20170630 |