CN107450262A - A kind of light supply apparatus and projection display equipment - Google Patents
A kind of light supply apparatus and projection display equipment Download PDFInfo
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- CN107450262A CN107450262A CN201710655245.1A CN201710655245A CN107450262A CN 107450262 A CN107450262 A CN 107450262A CN 201710655245 A CN201710655245 A CN 201710655245A CN 107450262 A CN107450262 A CN 107450262A
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- rotary body
- fluorophor
- light
- lens group
- motor
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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
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
The present invention relates to light supply apparatus and projection display equipment.Make the light source of this mode of light-emitting phosphor being irradiated to fluorophor after making the output light optically focused of semiconductor laser and being excited, it is difficult to shorten fluorophor and the distance of collector lens group, therefore the collection efficiency for the fluorescence that diffusion is projected is low, and the brightness and power efficiency for causing projection display equipment decline.In addition, the profile of the rotary body of coating fluorophor is bigger than the profile of motor, and the rotary shaft of rotary body is parallel with the optical axis of collector lens group, so as to cause the maximization of device.The present invention makes the optical axis of collector lens group be pitched with the rotary shaft of the rotary body with more than 10 degree and less than 80 degree of angle of intersection, and sets fluorophor on the inclined inclined-plane of rotary shaft relative to rotary body.Because the distance of fluorophor and collector lens group can be shortened, the fluorescence of diffusion injection can be more collected by collector lens group, therefore brightness and the power efficiency of projection display equipment can be improved, and being capable of miniaturization of the apparatus.
Description
Technical field
Possess the light supply apparatus of semiconductor laser and fluorophor (fluorescent material) the present invention relates to one kind and use and be somebody's turn to do
The projection display equipment of light supply apparatus.
Background technology
In recent years, a kind of semiconductor laser for the light that short wavelength is exported with high-luminous-efficiency is developed.Have been carried out using
The output light excited fluophor of this semiconductor laser simultaneously comes the light after wavelength convert as the light source of projection display equipment
Use.
In this light source, fluorophor can be fixed on to certain position to irradiate exciting light, but exciting light is often held
The situation that local temperature rise, luminous efficiency decline occurs in the same point of continuous irradiation fluorophor, or even also generating material is bad
The possibility of change.Therefore, mostly using the setting fluorophor and to avoid exciting light to glimmering on the interarea of the plectane of rotation in advance
The light source that the mode of irradiation is formed is fixed in the same point of body of light.
For example, a kind of output light for the semiconductor laser for making two-dimensional arrangements has been recorded in patent document 1 passes through big mouth
The lens group in footpath is condensed to rotation fluorescent plate, and the fluorescence sent by the rotation fluorescent plate excited is carried out by dichroscope
Color selects, then the projection display equipment being modulated by liquid crystal light modulating device to the light selected.
Patent document 1：Japanese Patent Publication 2016-146293 publications
In the existing projection display equipment as described in Patent Document 1, match somebody with somebody on rotation fluorescent plate and motor
Put, the problem of the problem of Existential Space utilization ratio is relatively low and device can not minimize and fluorescence utilization ratio are relatively low.
Existing rotation fluorescent plate rises to suppress the temperature of fluorophor as far as possible, in the plectane of metal major diameter
On be provided with luminescent coating, and support it to be rotated using motor-driven mode.For example, it is assumed that a diameter of
Luminescent coating is set on 50mm, the aluminum plectane that thickness is 0.5~0.8 millimeter, and makes it with 5000~10000 (revs/min)
Speed rotation, then the drive shaft diameter phi of required motor is 2mm, and the profile including housing is about 20 millimeters of left sides
It is right.In this case, the profile of plectane is about more than 2 times relative to electric machine casing, is generated in device in component layouts
Upper unemployed dead angle.In addition, fluorophor is arranged near the periphery of plectane, plectane and motor can be far beyond exciting lights
The optical axis in source and occupy space, hinder the miniaturization of device.
In existing device as described in Patent Document 1, by the lens for carrying out optically focused to exciting light and fluorescence
Set to main surface parallel of the group with rotating fluorescent plate, due to being difficult to lens group is substantial access to luminescent coating, therefore fluorescence be present
Light gathering efficiency reduce the problem of.Generally, the distance of fluorophor and collector lens group is (in the following description, sometimes
The referred to as operating distance WD of collector lens group) it is more near more be advantageous to be collected into more fluorescence.Because fluorescence is due to fluorescence
The influence of the surface scattering of particle etc., projected as the diffusion light of Lambertian reflection with wide range.Meanwhile in order to suppress glimmering
The local heating of body of light and the result that reduces the point of irradiation intensity of exciting light also can expand the luminous point area of fluorophor, therefore
Operating distance WD is smaller, and the collection to fluorescence is more favourable.
However, in the device of reality, it is relatively difficult to reduce operating distance WD.By a part for existing apparatus with typicalness
Section view is illustrated in Fig. 6, and 61 in figure are provided with the plectane of fluorophor, and 62 be the motor for rotating plectane, and 63 be optically focused
Lens group, 64 be the fixed appliance of collector lens group, and WD is the operating distance of collector lens group.Even if in order to reduce operating distance
WD and attempting make collector lens group 63 and be provided with fluorophor plectane 61 it is close, but consider form accuracy and the installation of plectane 61
Error, the deformation by the plectane 61 when being impacted from outside, the axial direction of motor 62 in the axial direction is rocked and collector lens group
The factor such as the risk of interferences of fixed appliance 64 if, reducing operating distance WD also has certain limit.Although also have internally
Spring is set to suppress the motor axially rocked, but when when being applied with big impulsive force, collector lens group and fluorescence
Body may not be in contact.For this reason, in existing device as described in Patent Document 1, it is difficult to it is saturating to reduce optically focused
The operating distance WD of microscope group, the utilization ratio of fluorescence have certain limit.
The content of the invention
The present invention be in view of the above problems and make, and it is an object of the present invention to provide one kind can shorten fluorophor and collector lens group
Distance so as to improve the light gathering efficiency of fluorescence and the light supply apparatus of miniaturization can be realized, and possess the small of the light supply apparatus
Type projection display equipment.
The present invention is a kind of light supply apparatus, is had：Blue laser light source；Rotary body, fluorophor is coated with, and can be with rotation
Rotated centered on rotating shaft；Motor, revolving force is provided to the rotary body；And collector lens group, make from the blue laser light
The blue laser that source is projected is condensed to the fluorophor, and the fluorescence sent to the fluorophor carries out optically focused, and its feature exists
In the optical axis of the collector lens group and the rotary shaft of the rotary body are pitched with more than 10 degree and less than 80 degree of angle of intersection.
In addition, the present invention is a kind of projection display equipment, it is characterised in that is possessed：Above-mentioned light supply apparatus, optical modulation device
And projection lens.
In accordance with the invention it is possible to a kind of distance that can shorten fluorophor and collector lens group is provided so as to improve the poly- of fluorescence
Light efficiency and the light supply apparatus that miniaturization can be realized, and possess the compact projection display device of the light supply apparatus.
Brief description of the drawings
Fig. 1 is the overall structure figure of the projection display equipment of first embodiment.
Fig. 2 (a) is the sectional view of the rotary body of first embodiment, and Fig. 2 (b) is the rotary body of first embodiment
Fluorophor configuration schematic diagram.
Fig. 3 is by the sectional view of the part amplification display of the rotary body of embodiment.
Fig. 4 (a) is the example that rotary body is fixed on to outer-rotor type DC brushless motor, and Fig. 4 (b) is in outer rotor
Inclined-plane is set on the rotor of type DC brushless motor and is coated with the example of fluorophor.
Fig. 5 is the overall structure figure of the projection display equipment of second embodiment.
Fig. 6 is the sectional view for showing existing rotary body and collector lens group.
Symbol description
1 ... light supply apparatus
11 ... excitation source components
12 ... exciting light source collector lens groups
13 ... polarization beam apparatus
14 ... 1/4 wavelength plates
15 ... fluorescence side collector lens groups
16 ... have the rotary body of fluorophor
17 ... motors
The drive shaft of 21 ... motors
50 ... light supply apparatuses
51 ... excitation source components
52 ... exciting light source collector lens groups
53 ... polarization beam apparatus
54 ... 1/4 wavelength plates
55 ... fluorescence side collector lens groups
56 ... have the rotary body of fluorophor
57 ... inclined-planes
58 ... motors
130 ... light colors select colour wheel
160 ... optical modulation devices
180 ... projection lens
190 ... projection screens
570 ... cross colour splitting prisms
582 ... red (R) use transmissive liquid crystal panel
584 ... green (G) use transmissive liquid crystal panel
586 ... blue (B) use transmissive liquid crystal panel
590 ... projection lens
The optical axis of Ax-L ... fluorescence side collector lens group
The rotary shaft of Ax-R ... rotary bodies
The driving shaft diameter of DS ... motors
Embodiment
Referring to the drawings, embodiments of the present invention are illustrated.
[first embodiment]
Fig. 1 is shown as the light supply apparatus of first embodiment of the invention and possesses the Projection Display dress of the light supply apparatus
The overall structure put.
(apparatus structure)
As shown in figure 1, the projection display equipment as first embodiment possess light supply apparatus 1, relay lens group 120,
Light color selection colour wheel 130, optical channel 140, illuminating lens group 150, optical modulation device 160, prism 171, prism 172, projection
Camera lens 180.There is also the situation for being further equipped with projection screen 190.
Light supply apparatus 1 possesses excitation source component 11, exciting light source condenser group 12, polarization beam apparatus 13,1/4 wavelength
Plate 14, fluorescence side collector lens group 15, rotary body 16, the motor 17 with fluorophor.It is detailed on extended meeting after light supply apparatus 1
Explanation.
Relay lens group 120 is the light directing light color selection colour wheel 130 for light supply apparatus 1 to be sent and then is condensed to
The lens group of the entrance port of optical channel 140, it is made up of single or multiple lens.
Illuminating lens group 150 be by through the light shaping that optical channel 140 is propagated suitable for being illuminated to optical modulation device
The lens group of light beam, it is made up of single or multiple lens.
Prism 171 and prism 172 collectively form inner full-reflection (TIR, Total Internal Reflection) rib
Mirror.TIR prism makes illumination light carry out inner full-reflection and incide optical modulation device with set angle, and makes optically modulated device
Reflected light after part modulation transmits towards projection lens 180.
Optical modulation device 160 is the device being modulated based on picture signal to incident light, uses and is provided with array-like
The DMD (DMD, Digital Micromirror Device) of micro mirror element.But it can also use such as reflective
Other reflection optical modulator parts of liquid crystal device etc.
Projection lens 180 be for by the light after optical modulation device is modulated be projected as image with camera lens, by single
Or multiple lens are formed.
Projection screen 190 uses when forming rear surface projection type display device.Although in addition, often in the case of front projection type
Set, but be not necessarily required to possess when user is projected to any metope etc..
On the operating of whole device, will be described later.
(light supply apparatus)
It is described in detail below for light supply apparatus 1.
First, excitation source component 11 possesses：Multiple blue laser light sources, are configured with array-like；And multiple collimations are thoroughly
Mirror, corresponding with each blue laser light source and configure, blue laser light source and collimation lens are by modularity, in light source assembly
The blue laser light source used is, for example, the semiconductor laser for the S polarisations for sending wavelength 440nm.
Each module of excitation source unit 11 is included blue laser light source and lighted with what 2 × 4 progress matrix arrangements formed
Device array.However, the matrix arrangement scale included in a module is not limited to the example.It can be more massive square
Battle array arrangement or the matrix arrangement that vertical and horizontal are identical quantity.It is saturating by collimating from the light of each LASER Light Source output
The effect of mirror and projected as almost parallel light from excitation source component 11.
The blue laser of the S polarisations projected from excitation source component 11 passes through exciting light source collector lens group 12, then by
Polarization beam apparatus 13 is reflected, and the fluorescence set on the inclined-plane of rotary body 16 is condensed to through fluorescence side collector lens group 15
Body.As described later, the region for the light irradiation that is excited on the inclined-plane of rotary body 16, is configured with and sends red light, green light, Huang
The fluorophor of coloured light.Polarization beam apparatus 13 is selective speculum, reflects the blue excitation light as S polarisations, and saturating
The blue light of P polarisations for penetrating the inconsistent fluorescence of polarisation and being reflected by rotary body 16 and being returned via 1/4 wavelength plate 14.Fluorescence
The fluorescence that body is sent through polarization beam apparatus 13, is penetrated towards relay lens group 120 by the optically focused of fluorescence side collector lens group 15
Go out.
(rotary body)
The rotary body 16 of the characteristic to being referred to as the present invention is described in detail below.
Fig. 2 (a) and Fig. 2 (b) be a part for the light supply apparatus 1 of Fig. 1 projection display equipment is extracted and
The figure of display.Ax-R in figure is the rotary shaft of rotary body 16, and AX-L is the optical axis of fluorescence side collector lens group 15.Fig. 2's
(a) be from the side observation comprising rotary body 16 rotary shaft section when typicalness sectional view, Fig. 2 (b) is from rotation
Figure during rotating shaft Ax-R direction observation rotary body 16.
In the present embodiment, use general shape for cylinder and bevelled rotary body is set in edge part, by poly-
Optical lens group makes exciting light optically focused and is irradiated to the fluorophor set on inclined-plane.
The base material of rotary body 16 is adapted to using the higher metal of thermal conductivity and light reflectivity.As rotary body 16, it is adapted to adopt
It is the base material of cylinder with general shape, and is provided with the inclined-plane 18 formed along the edge part chamfering of cylinder, is applied on inclined-plane 18
It is furnished with fluorophor.Revolving force is provided to rotary body 16 by motor 17, the point of irradiation of exciting light is enterprising on the inclined-plane 18 of rotary body
Row relative movement.The angle, θ 2 that the rotary shaft Ax-R of inclined-plane 18 that chamfering forms and rotary body 16 is formed be preferably more than 10 degree and
Less than 80 degree.
Stability when rotary body is installed into motor driving shaft 21, to rotation when or pressed down by deformation during external force
System and the easiness aspect described later for setting radiator structure, the height HR of the base material of rotary body is relative to motor
Driving shaft diameter DS is preferably set to more than 1.5 times.For example, as a diameter of 2.0mm of the drive shaft of motor, the base material of rotary body
Height HR is preferably set to more than 3.0mm.In addition, from the viewpoint of flatness, the outer diameter D R of rotary body is preferably height HR
Less than 10 times.In addition, in order to improve the utilization ratio of hollow of device, and suppress rotary body when rotated or by external force
When be deformed, the ratio between the outer diameter D R of rotary body and the profile DM of motor be DR/DM be preferably more than 1.0 and less than 1.5.This
Outside, on base material of the general shape for the rotary body of cylinder, in addition to the inclined-plane that chamfering forms, can also set as made below
With Fig. 3 come the recess of cooling that illustrates.
In the present embodiment, by the optical axis Ax-L of fluorescence side collector lens group 15 and the rotary shaft Ax-R of rotary body 16
The angle, θ 1 of formation is set to more than 10 degree and less than 80 degree.So, by the way that optical axis Ax-L and rotary shaft Ax-R to be configured to have
Angle and it is non-parallel, even if rocking so as to generating the axial direction of motor in the axial direction, can also reduce collector lens group and fluorophor
The risk of contact.
Also, such configuration reduces with setting fluorophor to be combined on the inclined-plane 18 formed along edge part chamfering
The fixed appliance 20 and rotary body 16 of fluorescence side collector lens group 15 produce the risk of mechanicalness interference.On shown in Fig. 6
Existing rotary body be plectane 61, the ledge of the fixed appliance 64 of collector lens group 63 and the interarea of plectane 61 approach,
The risk disturbed when from outside application vibration etc. is larger.In contrast, in the present embodiment, it is obvious by Fig. 2 (a)
Understand, turn into the structure that gap is easily ensured between the fixed appliance 20 of fluorescence side collector lens group 15 and rotary body 16.
In addition, in the present embodiment, the length from the front end of rotary body 16 to the rear end of motor 17 is set to L, will be from
The front end of rotary body 16 to optical axis Ax-L and rotary shaft Ax-R intersection point distance be set to G when, G is set in more than 1/4 times of L
And in less than 1.0 times of scope.This is to reduce dress to not make the optical axis of rotary body and motor far beyond collector lens group
Put interior space efficiency utilization.
Then, the configuration to the fluorophor of each color shown in Fig. 2 (b) illustrates.In the rotation of present embodiment
On swivel 16, along the track of point of irradiation, four belt-like zones are provided with：Region PR with the fluorophor for sending red light,
Region PG with the fluorophor for sending green light, the region PY with the fluorophor for sending sodium yellow, reflected excitation light it is anti-
Penetrate region RB.Each region is configured on the circular arc of the same radius centered on rotary shaft Ax-R.
With the rotation of rotary body 16, region PR, region PG, region PY are excited light irradiation successively, send respectively it is red,
Green, the fluorescence of yellow.In addition when blue laser irradiates reflector space RB, blue light is gathered by rotary body 16 towards fluorescence side
Optical lens group 15 reflects.The surface of base material preferably carries out mirror finish in advance, so that region PR, region PG, region PY are sent
Fluorescence effectively injects to the direction of fluorescence side collector lens group 15, or through reflector space RB by blue laser with high efficiency
Reflected towards the direction of fluorescence side collector lens group 15.
(operating of projection display equipment)
Next, returning to Fig. 1, illustrated for the overall operation of projection display equipment.
From with fluorophor rotary body 16 project light, through fluorescence side collector lens group 15,1/4 wavelength plate 14, partially
Beam splitter 13, the relay lens group 120 of shaking are directed to light color selection colour wheel 130.
Light color selection colour wheel 130 is the tabular rotary body that can be pivoted about with rotary shaft Ac, is provided with red
(R) optical filter of, green (G), yellow (Y) each color and for making the light transmissive fanwise slit (light transmission department) of blueness.Each color
Colored filter be in order to cut down the light of unwanted wavelength region in fluorescence improve display light excitation and set.
But because the blue light that the rotated body 16 of exciting light reflects and returned is the higher laser of excitation, and need not set
Put optical filter.
Rotary body 16 and light color selection colour wheel 130 with fluorophor are synchronously rotated, and rotation sequential is adjusted to,
R optical filters are configured when the former red-emitting phosphors are luminous, G optical filters are configured when green-emitting phosphor lights, work as yellow fluorescence
Y optical filters are configured when body is luminous, light transmission department is configured when blue excitation light reflects.
Incided through the light of light color selection colour wheel 130 by optical channel 140 and illuminating lens group 150 as TIR
The prism of prism.Optical modulation device 160 is incided with set angle in the light that the fully reflecting surface of prism 171 reflects.
Optical modulation device 160 has the micro mirror element set with array-like, is driven according to the picture signal of each color each
Micro mirror element, image light is reflected with first retainer to prism 171.Image light penetration prism 171 and prism 172, are directed to
Projection lens 180, and project on projection screen 190.
In the light supply apparatus of first embodiment described above, by the optical axis Ax-L of fluorescence side collector lens group 15
It is set as more than 10 degree and less than 80 degree with the rotary shaft Ax-R of rotary body 16 angle, θs 1 formed.In addition, the base by rotary body
The height HR of material is set to more than 1.5 times relative to the driving shaft diameter DS of motor, is that DR/HR is set by the ratio between outer diameter D R and height HR
For less than 10.In addition, the outer diameter D R of rotary body is set to more than 1.0 times and less than 1.5 times relative to the profile DM of motor.In addition,
The inclined-plane 18 that chamfering forms and the angle, θ 2 that the rotary shaft Ax-R of rotary body 16 is formed are set as more than 10 degree and less than 80 degree.
In addition, it is being L, by from the front end of rotary body 16 to optical axis Ax-L by the length from the front end of rotary body 16 to the rear end of motor 17
When being set to G with the distance of rotary shaft Ax-R intersection point, G is set in more than 1/4 times of L and less than 1.0 times of scope.
According to present embodiment, collector lens group and the risk of fluorophor contact, and fluorescence side optically focused can be suppressed
The fixed appliance 20 and rotary body 16 of lens group 15 produce the risk of mechanicalness interference, and can shorten the work of collector lens group
Distance WD.In Fig. 6 existing apparatus, when needing to avoid foregoing risk, it is unrealistic operating distance WD is less than 1.5mm
, but in the present embodiment, operating distance WD can for example be foreshortened to 0.5mm.In existing device, because can not contract
Short operating distance WD, so among the fluorescence that the diffusion light as Lambertian reflection is projected with wide range, it is collected into poly-
The upper limit of fluorescence in optical lens group is about 85%, but in the device of present embodiment, if using identical excitation source
It is compared, then about 95% in fluorescence can be collected into collector lens group.The result is that, it is assumed that excited using identical
If light source, if using the light supply apparatus of present embodiment, the maximum brightness of projection display equipment can be improved.In addition,
Assuming that if the maximum brightness of projection display equipment is set into identical, if using the light supply apparatus of present embodiment, can
The power excited with light source is reduced, therefore power consumption can be reduced.
In addition, rotary body and motor will not be far beyond the optical axises of collector lens group in Fig. 1 Z-direction, and X-direction
Length can also shorten, therefore can make light supply apparatus and be minimized using the projection display equipment of the light supply apparatus.
[variation of first embodiment]
First embodiment can have various deformation, therefore provide example.
(rotary body shape)
As has been described, as rotary body, it is preferably as follows form：General shape is cylinder, is provided with along edge part
The inclined-plane that chamfering forms, and fluorophor is coated with inclined-plane.But other forms can also be used.
For example, it is also possible to it is the rotary body of following form：Using the circle for being shaped as triangle in the section comprising rotary shaft
Cone is used as matrix, and is coated with fluorophor on cone inclined-plane.Furthermore it is also possible to it is the rotary body of following form：Using removal
The top of circular cone and the section comprising rotary shaft is shaped as trapezoidal cone as matrix, and fluorescence is coated with inclined-plane
Body.
It in the gradient relative to rotary shaft is to be coated with fluorophor on more than 10 degree and less than 80 degree of inclined-plane that emphasis, which is, and
The optical axis Ax-L of collector lens group and the rotary shaft Ax-R of rotary body is set to be pitched just with more than 10 degree and less than 80 degree of angle of intersection
Can be with.
Furthermore, it is possible to it is provided for suppressing the radiator structure that fluorescence temperature rises on the matrix of rotary body.In Fig. 3
In, it will be amplified in rotary body 30 by a part for dotted line and cross sectional shape be shown.In figure 3 it is shown that general shape is
Cylinder, it is provided with the inclined-plane 31 formed along edge part chamfering and the rotary body 30 of fluorophor 32 is coated with inclined-plane 31
Example, but rotary body can also be foregoing circular cone or cone.Rotary body 30 is provided with the face away from that side of motor 17
Recess 33, recess 34 is provided with side, recess 35 is provided with the face close to that side of motor 17.By setting recess
33rd, recess 34, recess 35, the contact area of matrix and air had both been added, and can produces air-flow, so as to improve radiating effect
Fruit.Because the height of the base material of rotary body is set to more than 1.5 times relative to the driving shaft diameter of motor, and by external diameter and highly
The ratio between i.e. DR/HR be set to less than 10, so recess 33, recess 34, recess 35 can be easy to set up.
Certainly, it is not necessarily to set the whole in recess 33, recess 34, recess 35, arbitrary recess can be selected to enter
Row is set, sometimes can also be without above-mentioned setting in the case of the fluorophor high using heat resistance.In addition, the shape of each recess
Shape is not limited to the shape shown in Fig. 3.
(rotary body and motor)
As the motor for driving rotating bodies, the motor of a variety of patterns can be used, but due in order to improve in device
Space efficiency utilization, to shorten rotary body front end to the length of motor rear end, and by the outer diameter D R and motor profile of rotary body
The ratio between DM is that DR/DM is set to more than 1.0 and less than 1.5, therefore preferably uses outer-rotor type DC brushless motor.
In Fig. 4 (a) and 4 (b), the typicalness sectional view of two examples is shown.Fig. 4 (a) is to consolidate rotary body
It is scheduled on the example of outer-rotor type DC brushless motor.Fig. 4 (b) is set tiltedly on the rotor of outer-rotor type DC brushless motor
Face is simultaneously coated with fluorophor, and rotor doubles as the example of rotary body in itself.
In the example of Fig. 4 (a), 41 be rotary body, and 42 be the inclined-plane for being coated with fluorophor, and 43 be outer-rotor type direct current
The rotor of brushless electric machine, 44 are provided in the permanent magnet on rotor, and 45 be the laminated cores of stator, and 46 be the coil of stator.Rotation
Body 41 and rotor 43 are aligned position and fixed in a manner of rotary shaft is concentric, and are integrated.If by rotary body 41
With rotor 43 as from the point of view of integral component, then the ratio between external diameter and height are less than 10.
In addition, 42 be the inclined-plane for being coated with fluorophor, and 43 be outer-rotor type direct current in the example of Fig. 4 (b) similarly
The rotor of brushless electric machine, 44 are provided in the permanent magnet on rotor, and 45 be the laminated cores of stator, and 46 be the coil of stator.But
In the example of Fig. 4 (b), distinctive points are that inclined-plane is set with the rotor sheet of outer-rotor type DC brushless motor and is coated with glimmering
Body of light.That is, rotor 43, due to being thus integrated as rotary body, the ratio between its external diameter/height is less than 10.At this
In individual example, it is not necessary to rotary body and rotor both parts are directed at position in a manner of rotary shaft is concentric and are fixed,
It is few in manufacturing process and it is easy realize miniaturization in terms of be favourable.
(color of fluorophor)
The configuration of the fluorophor set on rotary body is not limited to the example of Fig. 2 (b).For example, in Fig. 2 (b), if
Be equipped with send red light, send green light, send sodium yellow three kinds of colors fluorophor, but according to circumstances, can also only make
With send red light and send green light two kinds of colors fluorophor.
In addition, for example, when using wavelength for 405nm laser as exciting light, can also be not provided with rotary body
Reflector space, but the fluorophor for sending white light is set on the whole on the circular inclined-plane centered on rotary shaft.In addition,
If changing the structure of fluorophor, the structure of light color selection colour wheel 130 should also change therewith.
(optical modulation device)
Using when being provided with the light supply apparatus of fluorophor on rotary body to form projection display equipment, optical modulation device is not
It is confined to such as be provided with the DMD of micro mirror element or the reflection optical modulator part of reflective liquid crystal on silicon etc with array-like.
The device of second embodiment (Fig. 5) as be described hereinafter is such, can also use transmission-type light modulator part.
[second embodiment]
In the projection display equipment of first embodiment, at the edge of remote that side of motor of the rotary body in light source portion
The inclined-plane of chamfering shape is set and is coated with the fluorophor of a variety of colors, and in this second embodiment, close to that side of motor
Edge the inclined-plane of chamfering shape is set and coating sends the fluorophor of white light.Moreover, in the first embodiment, relative to poly-
The optical axis of optical lens group, motor is configured with excitation source components side (Z-direction side), and in this second embodiment, relative to
The optical axis of collector lens group, motor is configured in the opposite side of excitation source components side (the opposite side of Z-direction).In addition, first
In embodiment, reflection optical modulator part is employed, and in this second embodiment, using transmission-type light modulator part.
Fig. 5 is shown as the overall structure of the projection display equipment of second embodiment of the present invention.
(apparatus structure and operating)
As shown in figure 5, the projection display equipment of second embodiment possesses：Light supply apparatus 50；Relay lens group 510；The
One lens array 520；Second lens array 530；Polarisation switching device 540；It is superimposed lens 550；Dichroscope 560,561；Instead
Penetrate mirror 562,563,564；Cross colour splitting prism 570；Red (R) uses lens 581；Red uses transmissive liquid crystal panel 582；Green
(G) lens 583 are used；Green uses transmission-type liquid crystal board 584；Blue (B) uses lens 585；Blueness uses transmissive liquid crystal panel 586；
Projection lens 590.There is also the situation for being further equipped with projection screen 591.
Light supply apparatus 50 includes excitation source component 51, exciting light source collector lens group 52, polarization beam apparatus 53,1/4
Wavelength plate 54, fluorescence side collector lens group 55, rotary body 56, the motor 58 with fluorophor.On light supply apparatus 50, rear
Face describes in detail.
The repeated lens group 510 of light projected from light supply apparatus 50 is directed to the first lens array 520.First lens array
520 possess in order to light is divided into multiple beamlets and with multiple lenslets of rectangular configuration.Second lens array 530 and folded
Adding lens 550 to make, the image of the lenslet of the first lens array 520 images in red transmissive liquid crystal panel 582, green is used
Transmissive liquid crystal panel 584, blueness are near the picture area of transmissive liquid crystal panel 586.First lens array 520, second
Lens array 530 and superposition lens 550 make the luminous intensity of light supply apparatus 1 be homogenized in direction in the face of transmissive liquid crystal panel.
The beamlet split by the first lens array 520 is converted into linear polarization by polarisation switching device 540.Dichroscope
560 be to make red reflective and make green light and the light transmissive dichroscope of blueness.Dichroscope 561 be make green light reflect and
Make the light transmissive dichroscope of blueness.Speculum 562 and 563 is the speculum for reflecting blue light.Speculum 564 is to make red
The speculum of light reflection.
As the red light after linear polarization red transmissive liquid crystal panel 582, root are incided through red lens 581
It is modulated according to picture signal, and is projected as image light.In addition, use transmission liquid crystal face with lens 581 and red in red
It is between plate 582 and red with being each configured with light incident side polarisation between transmissive liquid crystal panel 582 and cross colour splitting prism 570
Plate (not shown) and exiting side Polarizer (not shown).Same with red light, green light uses transmissive liquid crystal panel 584 through green
Modulation, blue light are modulated by the use of transmissive liquid crystal panel 586 through blueness and projected as image light.
Cross colour splitting prism 570 is to form four right-angle prism bondings, on the X-shaped interface of binding part, is provided with
Dielectric multilayer-film.Passed through from the red image light exported with transmissive liquid crystal panel 582 and blueness transmissive liquid crystal panel 586
Dielectric multilayer-film is reflected to projection lens 590, and the image light that transmissive liquid crystal panel 584 exports is used towards projection lens from green
590 and pass through dielectric multilayer-film.The image light of each color is applied and projected to by projection lens 590 on projection screen 591.
(light supply apparatus)
It is described in detail below for light supply apparatus 50.
First, excitation source component 51 possesses：Multiple blue laser light sources, are configured with array-like；And multiple collimations are thoroughly
Mirror, corresponding with each blue laser light source and configure, blue laser light source and collimation lens are by modularity.Make in light source assembly
Blue laser light source is, for example, the semiconductor laser for the S polarisations for sending wavelength 405nm.
Each module of excitation source component 51 is included blue laser light source and lighted with what 2 × 4 progress matrix arrangements formed
Device array.Can be more massive square but the scale of the matrix arrangement included in a module is not limited thereto example
Battle array arrangement or the matrix arrangement that vertical and horizontal are identical quantity.It is saturating by collimating from the light of each LASER Light Source output
The effect of mirror and projected as almost parallel light from excitation source component 51.
The blue laser of the S polarisations projected from excitation source component 51 passes through exciting light source collector lens group 52, then by
Polarization beam apparatus 53 is reflected, and the fluorophor set on rotary body 56 is condensed to through fluorescence side collector lens group 55.Revolving
The irradiation of swivel 56 has on the face of exciting light, is configured with by blue excitation light to send the fluorophor of white light.Polarization beam splitting
Device 53 is selective speculum, reflects the blue excitation light as S polarisations, and transmits fluorophor is sent, polarisation not
Consistent fluorescence.The fluorescence that fluorophor is sent is by the optically focused of fluorescence side collector lens group 55, through polarization beam apparatus 53, towards relaying
Lens group 510 projects.
(rotary body)
The rotary body 56 of the feature to being referred to as the present invention is described in detail below.
Use general shape for cylinder and bevelled rotary body is set in edge part, exciting light is made by collector lens group
Optically focused is simultaneously irradiated to the fluorophor set on inclined-plane, and this point is identical with first embodiment, in this second embodiment, area
It is white that the edge part that other point is utilized in close to that side of motor 58 sets the inclined-plane 57 and being coated with inclined-plane of chamfering shape to send
The rotary body of the fluorophor of coloured light.Moreover, in the first embodiment, relative to the optical axis Ax-L of collector lens group, exciting
Light source assembly side (Z-direction side) is configured with motor, and in this second embodiment, relative to fluorescence side collector lens group 55
Optical axis Ax-L, motor 58 is configured with the opposite side of excitation source component 51 (the opposite side of Z-direction).The inclined-plane 57 that chamfering forms
It it is preferably more than 10 degree and less than 80 degree with the rotary shaft Ax-R of rotary body 56 angles formed.
In the present embodiment, by the optical axis Ax-L of fluorescence side collector lens group 55 and the rotary shaft Ax-R of rotary body 56
The angle, θ 3 of formation is set to more than 10 degree and less than 80 degree.So, by the way that optical axis Ax-L and rotary shaft Ax-R to be configured to have
Angle and it is non-parallel, even if rocking so as to generating the axial direction of motor in the axial direction, can also reduce collector lens group and fluorophor
The risk of contact.
Also, such configuration reduces with setting fluorophor to be combined on the inclined-plane 57 formed along edge part chamfering
The fixed appliance and rotary body 56 of fluorescence side collector lens group 55 produce the risk of mechanicalness interference.On shown in Fig. 6
Existing rotary body is plectane 61, and the ledge of the fixed appliance 64 of collector lens group 63 and the interarea of plectane 61 approach, when
It is larger from the risk disturbed during outside application vibration etc..In contrast, in the present embodiment, turn into easily in fluorophor
The structure in gap is ensured between the fixed appliance and rotary body 56 of side collector lens group 55.
In addition, because by motor 58 configure compared with rotary body 56 closer to X-direction side, with first embodiment
Compared to the length of the X-direction of energy shortening device.
The base material of rotary body 56 is adapted to using the higher metal of thermal conductivity and light reflectivity.With the rotation of rotary body 56,
The irradiation position relative movement of exciting light, white fluorescent is always sent from rotary body.Inclined-plane 57 as fluorescent base bottom is preferably pre-
Mirror finish is first carried out, so that the fluorescence sent effectively injects to the direction of fluorescence side light collecting lens group 55.
Stability when rotary body is installed into motor driving shaft, to rotation when or pressed down by deformation during external force
System and the easiness aspect described later for setting radiator structure, the height HR of the base material of rotary body is relative to motor
Driving shaft diameter DS is preferably set to more than 1.5 times.For example, as a diameter of 2.0mm of the drive shaft of motor, the base material of rotary body
Height HR is preferably set to more than 3.0mm.In addition, from the viewpoint of flatness, the outer diameter D R of rotary body is preferably height HR
Less than 10 times.In addition, in order to improve the utilization ratio of hollow of device, and suppress rotary body when rotated or by external force
When be deformed, the ratio between the outer diameter D R of rotary body and the profile DM of motor be DR/DM be preferably more than 1.0 and less than 1.5.This
Outside, on the base material of rotary body, in addition to the inclined-plane that chamfering forms, can also set identical with the recess illustrated using Fig. 3
Cooling recess.
In the light supply apparatus of second embodiment described above, by the optical axis Ax-L of fluorescence side collector lens group 55
More than 10 degree and less than 80 degree are set to the rotary shaft Ax-R of rotary body 56 angle, θs 3 formed.In addition, the external diameter by rotary body
The ratio between DR and motor profile DM are that DR/DM is set to more than 1.0 and less than 1.5.In addition, inclined-plane 57 and rotary body that chamfering is formed
The angle that 56 rotary shaft Ax-R is formed is set to more than 10 degree and less than 80 degree.
According to present embodiment, collector lens group and the risk of fluorophor contact, and fluorescence side optically focused can be suppressed
The fixed appliance and rotary body 56 of lens 55 produce the risk of mechanicalness interference, and can shorten the operating distance of collector lens group
WD.In Fig. 6 existing apparatus, when needing to avoid foregoing risk, make operating distance WD be less than 1.5mm be it is unpractical,
But in the present embodiment, operating distance WD can for example be foreshortened to 0.5mm.In existing device, because can not shorten
Operating distance WD, so among the fluorescence that the diffusion light as Lambertian reflection is projected with wide range, it is collected into optically focused
The upper limit of fluorescence in lens group is about 85%, but in the device of present embodiment, if entered using identical excitation source
Row compares, then about 95% in fluorescence can be collected into collector lens group.The result is that, it is assumed that use identical exciting light
If source, if using the light supply apparatus of present embodiment, the maximum brightness of projection display equipment can be improved.It is in addition, false
If if the maximum brightness of projection display equipment is set into identical, if using the light supply apparatus of present embodiment, it can drop
The low power excited with light source, therefore power consumption can be reduced.
In addition, rotary body and motor will not far beyond the optical axis of collector lens group, and because by motor configuration with rotation
Swivel is compared closer to X-direction side, so being capable of the length of the X-direction of shortening device, therefore can make light supply apparatus and use
The projection display equipment miniaturization of the light supply apparatus.
[variation of second embodiment]
(rotary body shape)
As described above, as rotary body, form is preferably as follows：General shape is cylinder, be provided with along close to motor that
The inclined-plane that the edge part chamfering of side forms, and fluorophor is coated with inclined-plane.But other forms can also be used.
For example, it is also possible to it is the rotary body of following form：Using the del that is shaped as in section comprising rotary shaft
Circular cone is coated with fluorophor as matrix on cone inclined-plane.Furthermore it is also possible to it is the rotary body of following form：Using going
Make the section comprising rotary shaft except top is shaped as matrix of the shorter trapezoidal cone in motor side base as rotary body,
And fluorophor is coated with inclined-plane.
It in the gradient relative to rotary shaft is to be coated with fluorophor on more than 10 degree and less than 80 degree of inclined-plane that emphasis, which is, and
The rotary shaft Ax-R of the optical axis Ax-L of the collector lens group and rotary body angles formed are set to more than 10 degree and less than 80 degree just
Can be with.
Furthermore, it is possible to it is provided for suppressing the radiator structure that fluorescence temperature rises on the matrix of rotary body.With Fig. 3 institutes
Example child is identical, can be set on the face of that side of the remote motor 58 of rotary body 56, side, the face close to that side of motor 58
Put recess.By setting recess, the contact area of matrix and air was both added, and can produces air-flow, scattered so as to improve
Thermal effect.Because the height of the base material of rotary body is set into more than 1.5 times relative to the driving shaft diameter of motor, and by external diameter with
The i.e. DR/HR of the ratio between height is set to less than 10, so recess can be easy to set up.
Certainly, it is not necessarily to set recess on each face, arbitrary face can be selected to be configured, using heat-resisting
Sometimes can also be without above-mentioned setting in the case of the high fluorophor of property.In addition, the shape of recess is not limited to the shape shown in Fig. 3
Shape.
(optical modulation device)
Optical modulation device is not limited to transmission-type light modulator part, can also be such as foregoing first embodiment (Fig. 1) dress
Put like that, the DMD or the reflection optical modulator of reflective liquid crystal on silicon etc for micro mirror element being such as provided with array-like
Part is applied in combination with light color selection colour wheel.At this point it is possible to as the device of first embodiment, it is coated with rotary body each
The fluorophor of kind color, and the reflector space of exciting light is set.
[other embodiment]
As described above, first embodiment and all light supply apparatuses shown in second embodiment are either with reflection
, can in the projection display equipment of formula optical modulation device or in the projection display equipment with transmission-type light modulator part
Independent assortment uses.In addition, the shape of the structure member of light supply apparatus shown in all embodiments, size, combination, configuration
Deng can suitably be changed according to the structure and the various conditions such as specification of the projection display equipment of the application present invention.
Claims (9)
1. a kind of light supply apparatus, has：
Blue laser light source；
Rotary body, fluorophor is coated with, and can be rotated centered on rotary shaft；
Motor, revolving force is provided to the rotary body；And
Collector lens group, make to be condensed to the fluorophor from the blue laser that the blue laser light source projects, and to described
The fluorescence that fluorophor is sent carries out optically focused,
Characterized in that,
The optical axis of the collector lens group and the rotary shaft of the rotary body are pitched with more than 10 degree and less than 80 degree of angle of intersection.
2. light supply apparatus according to claim 1, it is characterised in that
The fluorophor is on relative to the inclined inclined-plane of the rotary shaft along centered on the rotary shaft of the rotary body
Annulus or circular arc coating.
3. light supply apparatus according to claim 1 or 2, it is characterised in that
When distance from the front end of the rotary body to the rear end of the motor is set into L, the optical axis of the collector lens group and
The point that the rotary shaft of the rotary body intersects is located in the rotary shaft and with the distance of the front end of the rotary body L's
In more than 1/4 times and less than 1 times of scope.
4. the light supply apparatus described in any one in claims 1 to 3, it is characterised in that
The height of the rotary body is the driving more than 1.5 times of shaft diameter of the motor, the external diameter of the rotary body relative to
The height is less than 10 times.
5. the light supply apparatus described in any one in Claims 1-4, it is characterised in that
The external diameter of the rotary body is more than 1.0 times and less than 1.5 times relative to the external diameter of the motor.
6. the light supply apparatus described in any one in claim 1 to 5, it is characterised in that
The motor is outer-rotor type DC brushless motor,
The rotary body is integrated with the rotor of the motor.
7. the light supply apparatus described in any one in claim 1 to 6, it is characterised in that
The fluorophor is coated on inclined-plane, the inclined-plane on the direction of the rotary shaft motor described in distance more it is remote then with
The distance of rotary shaft is smaller.
8. the light supply apparatus described in any one in claim 1 to 6, it is characterised in that
The fluorophor is coated on inclined-plane, the inclined-plane in the direction of the axis of rotation apart from the motor more it is remote then with rotation
The distance of axle is bigger.
9. a kind of projection display equipment, it is characterised in that possess：
The light supply apparatus described in any one in claim 1 to 8；
Optical modulation device；And
Projection lens.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-013850 | 2017-01-30 | ||
| JP2017013850A JP2018124306A (en) | 2017-01-30 | 2017-01-30 | Light source device and projection-type display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107450262A true CN107450262A (en) | 2017-12-08 |
| CN107450262B CN107450262B (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710655245.1A Active CN107450262B (en) | 2017-01-30 | 2017-08-03 | Light source device and projection display device |
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| Country | Link |
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| JP (1) | JP2018124306A (en) |
| CN (1) | CN107450262B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044821A (en) * | 2019-05-22 | 2019-07-23 | 四川朴澜医疗科技有限公司 | It is a kind of for fluorescent signals detection light channel structure, optical assay device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000171898A (en) * | 1998-12-08 | 2000-06-23 | Nec Corp | Color projector |
| JP2011124011A (en) * | 2009-12-08 | 2011-06-23 | Stanley Electric Co Ltd | Light source device and lighting system |
| CN102155639A (en) * | 2010-02-12 | 2011-08-17 | 日立民用电子株式会社 | Solid-state light source device |
| JP2011227333A (en) * | 2010-04-21 | 2011-11-10 | Stanley Electric Co Ltd | Light source device and illuminator |
| JP2016146293A (en) * | 2015-02-09 | 2016-08-12 | セイコーエプソン株式会社 | Wavelength conversion element, luminaire, and projector |
-
2017
- 2017-01-30 JP JP2017013850A patent/JP2018124306A/en active Pending
- 2017-08-03 CN CN201710655245.1A patent/CN107450262B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000171898A (en) * | 1998-12-08 | 2000-06-23 | Nec Corp | Color projector |
| JP2011124011A (en) * | 2009-12-08 | 2011-06-23 | Stanley Electric Co Ltd | Light source device and lighting system |
| CN102155639A (en) * | 2010-02-12 | 2011-08-17 | 日立民用电子株式会社 | Solid-state light source device |
| JP2011227333A (en) * | 2010-04-21 | 2011-11-10 | Stanley Electric Co Ltd | Light source device and illuminator |
| JP2016146293A (en) * | 2015-02-09 | 2016-08-12 | セイコーエプソン株式会社 | Wavelength conversion element, luminaire, and projector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044821A (en) * | 2019-05-22 | 2019-07-23 | 四川朴澜医疗科技有限公司 | It is a kind of for fluorescent signals detection light channel structure, optical assay device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018124306A (en) | 2018-08-09 |
| CN107450262B (en) | 2020-01-10 |
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Effective date of registration: 20220601 Address after: Room 227, Room 201, second floor, building 3, yard 29, North Third Ring Middle Road, Xicheng District, Beijing Patentee after: Sonoc (Beijing) Technology Co.,Ltd. Address before: Tokyo Patentee before: LIGHT SHOW TECHNOLOGY CO.,LTD. |