CN203232239U - Light source device and projector - Google Patents

Light source device and projector Download PDF

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Publication number
CN203232239U
CN203232239U CN 201220632051 CN201220632051U CN203232239U CN 203232239 U CN203232239 U CN 203232239U CN 201220632051 CN201220632051 CN 201220632051 CN 201220632051 U CN201220632051 U CN 201220632051U CN 203232239 U CN203232239 U CN 203232239U
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CN
China
Prior art keywords
light
exciting
lens
solid
light source
Prior art date
Application number
CN 201220632051
Other languages
Chinese (zh)
Inventor
秋山光一
Original Assignee
精工爱普生株式会社
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Filing date
Publication date
Priority to JP261903/2011 priority Critical
Priority to JP2011261903A priority patent/JP5915124B2/en
Application filed by 精工爱普生株式会社 filed Critical 精工爱普生株式会社
Application granted granted Critical
Publication of CN203232239U publication Critical patent/CN203232239U/en

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Abstract

The utility model relates to a light source device and a projector. The light source device can further improve brightness of the light source device without reducing utilization efficiency of the light. The light source device comprises the following elements: a first light source portion (10) comprising a plurality of first solid light sources (13) emitting first excitation lights; a second light source portion (20) comprising a plurality of second solid light sources (23) emitting second excitation lights; an excitation light combination portion (30) for combining a plurality of the first excitation lights emitted from the first light source portion (10) and a plurality of second excitation lights emitted from the second light source portion (20), and for emitting the combined excitation light; a lens array (51) for splitting the combined excitation light emitted from the excitation light combination portion (30) into a plurality of sub-light beams; a focusing optical system for focusing the plurality of sub-light beams; and a lighting element (80) excited by the plurality of sub-light beams focused by the focusing optical system so as to emit fluorescence.

Description

Light supply apparatus and projector
Technical field
The utility model relates to light supply apparatus and projector.
Background technology
Existing, the known light supply apparatus that possesses a plurality of solid light sources of ejaculation exciting light and send the luminescent coating of fluorescence by the exciting light excitation of penetrating from a plurality of solid light sources.And known possess so projector of light supply apparatus (for example, the spy opens the 2004-327361 communique).
In the conventional lighting sources device, luminescent coating is disposed at the spot position from the exciting light optically focused of a plurality of solid light sources.Therefore, can not can making the area that sends the light-emitting zone of fluorescence from luminescent coating is that etendue becomes the earth the light quantity of fluorescence is strengthened.Thereby, can not can make the brightness of the utilization ratio decline ground raising light supply apparatus of light.
Patent documentation 1 TOHKEMY 2004-327361 communique
The utility model content
In the technical field of light supply apparatus, requirement can not can make the utilization ratio of light further improve the light supply apparatus of the brightness of light supply apparatus with reducing.
The utility model is made in view of situation so, and purpose is to provide the utilization ratio that it(?) can not can make light further to improve the light supply apparatus of the brightness of light supply apparatus with reducing.And purpose is to provide to be possessed light supply apparatus so, can not can make the utilization ratio of light further improve the projector of the brightness of display frame with reducing.
In order to solve described problem, light supply apparatus of the present utility model is characterised in that: comprise the 1st light source portion, the 2nd light source portion, the synthetic portion of exciting light, lens arra, light-gathering optics and light-emitting component, described the 1st light source portion comprises a plurality of the 1st solid light sources that penetrate the 1st exciting light; Described the 2nd light source portion comprises a plurality of the 2nd solid light sources that penetrate the 2nd exciting light; The synthetic portion of described exciting light synthesizes a plurality of described the 1st exciting light that penetrates from described the 1st light source portion and a plurality of described the 2nd exciting light that penetrates from described the 2nd light source portion, and penetrates as synthetic exciting light; Described lens arra will be divided into a plurality of sub-light shafts from the described synthetic exciting light that the synthetic portion of described exciting light penetrates; Described light-gathering optics makes described a plurality of sub-light shafts carry out optically focused; Described light-emitting component sends fluorescence by the described a plurality of sub-light shafts excitation with described light-gathering optics optically focused.
Constitute according to this, utilize the exciting light that penetrates from 2 light source portion (the 1st light source portion and the 2nd light source portion) that comprise a plurality of solid light sources to send fluorescence.Therefore, can further improve the brightness of light supply apparatus.In this manual, sometimes the 1st light source portion and the 2nd light source portion are referred to as 2 light source portion.
And, the exciting light from 2 light source portion is utilized the synthetic portion of exciting light carried out synthetic after, make it to be concentrated on light-emitting component.Therefore, synthesize the situation of synthesizing on portion ground with the exciting light that the exciting light from 2 light source portion is not utilized the utility model relate to and compare, can make exciting light be incident in the littler zone of light-emitting component with further little incident angle with respect to light-emitting component.That is to say, the increase of etendue is diminished.On this meaning, the reduction of the utilization ratio of the fluorescence light that results from 2 light source portion of employing and produce is diminished.
And, overlapping on light-emitting component by lens arra and light-gathering optics by being situated between from the exciting light of 2 light source portion, the light intensity distributions equalization.Therefore, can be in light-emitting component integral body with same light intensity irradiation exciting light.Thus, easily light quantity is controlled, in order to avoid it is saturated to produce light partly in the zone of irradiation blasting light.Thereby, the brightness that can not can make the utilization ratio of exciting light further improve light supply apparatus with reducing.
In described light supply apparatus, preferably constitute: the synthetic portion of described exciting light has to be made as the light transmission of P polarized light incident and the polarization separating film that the light as the incident of S polarized light is reflected; Described a plurality of described the 1st exciting light is incident in the synthetic portion of described exciting light as the P polarized light, and described a plurality of the 2nd exciting lights are incident in the synthetic portion of described exciting light as the S polarized light.
Constitute according to this, utilize the principle of polarization separating film, can synthesize with high efficient the 1st exciting light and the 2nd exciting light.
In described light supply apparatus, preferred: the synthetic portion of described exciting light further possesses the 1st transparent component and the 2nd transparent component that the described polarization separating film of clamping ground arranges; The 1st exciting light among described a plurality of the 1st exciting light is situated between and is incident in described polarization separating film by described the 1st transparent component; The 2nd exciting light among described a plurality of the 2nd exciting light is situated between and is incident in described polarization separating film by described the 2nd transparent component.
Constitute according to this, after respectively by transparent component, be incident in polarization separating film from the exciting light of 2 light source portion.Therefore, though in refringence under situation big between polarization separating film and the air layer (medium that till being incident in polarization separating film, passes through from the exciting light of 2 light source portion), also can alleviate described refringence.Thereby, and be not that the transparent component that relates to of the utility model is formed at the situation of polarization separating film but compares from the formation that the exciting light of 2 light source portion directly is incident in polarization separating film, can reduce the loss of the light that produces greatly owing to described refringence.
In described light supply apparatus, preferred: the synthetic portion of described exciting light is configured to, and the described polarization separating film of interface clamping between the interface between described the 1st transparent component and the described polarization separating film and described the 2nd transparent component and the described polarization separating film overlaps each other.
Constitute according to this, under constituting the situation that is incident in clamping polarization separating film zone opposite one another in the synthetic portion of exciting light separately of the 1st exciting light and the 2nd exciting light, alleviate described refringence with transparent component easily.Thereby, can the loss that produce light owing to described refringence greatly be suppressed.
In described light supply apparatus, preferably: the synthetic portion of described exciting light is configured to, and the described polarization separating film of interface clamping between the interface between described the 1st transparent component and the described polarization separating film and described the 2nd transparent component and the described polarization separating film is partly overlapping mutually.
According to this formation, be configured to, it is overlapping that the 1st exciting light is incident in the zone of polarization separating film and each comfortable polarization separating film in zone that the 2nd exciting light is incident in polarization separating film a part.Thereby, can be in synthetic exciting light, producing inhomogeneous the inhibition.
In described light supply apparatus, preferred: the synthetic portion of described exciting light has the reflector space that passes through the zone and described a plurality of the 2nd exciting light is reflected that described a plurality of the 1st exciting light is passed through.
Constitute according to this, can synthesize with high efficient the 1st exciting light and the 2nd exciting light.For example, in the synthetic portion of exciting light under the situation of the formation that has peristome by the zone, can be to because the peristome of the 1st exciting light by the synthetic portion of exciting light produces the loss of light suppresses.
In described light supply apparatus, preferred: described a plurality of the 1st solid light sources and described a plurality of the 2nd solid light source comprise semiconductor laser respectively; Described semiconductor laser constitutes, and has the light-emitting zone of the rectangular shape of overlooking, and is bigger than the extended corner along the light of the long side direction of described light-emitting zone along the extended corner of the light of the short side direction of described light-emitting zone; The long side direction of the light-emitting zone projection of the 1st solid light source among described a plurality of the 1st solid light sources shape when the synthetic portion of described exciting light and short side direction and long side direction and short side direction with the shape of light-emitting zone projection when described exciting light synthesizes portion of the 2nd solid light source among described a plurality of the 2nd solid light sources had reciprocal relation respectively.
Constitute according to this, utilize the characteristic of semiconductor laser, be difficult to be incident between the zone of polarization separating film and the zone that the 2nd exciting light is incident in polarization separating film at the 1st exciting light producing the gap.Thereby, can be in synthetic exciting light, producing inhomogeneous the inhibition.
In described light supply apparatus, preferred: described a plurality of the 1st solid light sources are arranged as array-like; Described the 1st light source portion possesses the 1st collimator lens array, and the 1st collimator lens array has a plurality of the 1st collimation lenses that arrange corresponding to described a plurality of the 1st solid light sources; The 1st exciting light parallelization that the 1st collimation lens among described a plurality of the 1st collimation lens penetrates the 1st solid light source among described a plurality of the 1st solid light sources; Described a plurality of the 2nd solid light source is arranged as array-like; Described the 2nd light source portion possesses the 2nd collimator lens array, and the 2nd collimator lens array has a plurality of the 2nd collimation lenses that arrange corresponding to described a plurality of the 2nd solid light sources; The 2nd exciting light parallelization that the 2nd collimation lens among described a plurality of the 2nd collimation lens penetrates the 2nd solid light source among described a plurality of the 2nd solid light sources.
Constitute according to this, each comfortable parallelization of the 1st exciting light and the 2nd exciting light state under be incident in the synthetic portion of exciting light.Therefore, the situation that is incident in the synthetic portion of exciting light separately obliquely than the 1st exciting light and the 2nd exciting light can drain to the outside to exciting light and suppress.Thereby, can synthesize with high efficient the 1st exciting light and the 2nd exciting light.
In described light supply apparatus, preferred: described a plurality of the 1st solid light sources are configured to rectangular, and make that the long side direction of described a plurality of the 1st solid light sources light-emitting zone separately is parallel with the 1st direction; Described a plurality of the 1st collimation lens is configured to rectangular corresponding to the configuration of described a plurality of the 1st solid light sources; The spacing of the direction of intersecting with described the 1st direction of described a plurality of the 1st collimation lenses of gap ratio of described the 1st direction of described a plurality of the 1st collimation lenses will be lacked; Described a plurality of the 2nd solid light source is configured to rectangular, and makes that the long side direction of described a plurality of the 2nd solid light sources light-emitting zone separately is parallel with the 2nd direction; Described a plurality of the 2nd collimation lens is configured to rectangular corresponding to the configuration of described a plurality of the 2nd solid light sources; The spacing of the direction of intersecting with described the 2nd direction of described a plurality of the 2nd collimation lenses of gap ratio of described the 2nd direction of described a plurality of the 2nd collimation lenses will be lacked.
Constitute according to this, a plurality of solid light sources fitly dispose in the 1st solid light source array and the 2nd solid light source array both sides' solid light source array.Therefore, can seek the miniaturization of each solid light source array.And, a plurality of collimation lenses configuration fitly under corresponding to the state of the light radiation characteristic of semiconductor laser in the 1st collimator lens array and the 2nd collimator lens array both sides' collimator lens array.Therefore, also can seek the miniaturization of each collimator lens array.Thereby, can seek the miniaturization of light supply apparatus.
In described light supply apparatus, preferred: described light-gathering optics has and carries out the 2nd lens arra of incident with paired, the described sub-light shafts of described lens arra and make the described sub-light shafts that penetrate from described the 2nd lens arra overlapping overlapping optical system on described light-emitting component; The lens face of described lens arra and the photoirradiated surface of described light-emitting component are situated between and are in conjugate relation by described light-gathering optics.
Constitute according to this, a plurality of sub-light shafts are overlapping well on the photoirradiated surface of light-emitting component.Therefore, make the light intensity distributions equalization easily, easily light quantity is controlled in order to avoid to produce the light of light-emitting component saturated.
In described light supply apparatus, preferred: constituting the plan view shape of a plurality of lenslets of described lens arra and the plan view shape of described photoirradiated surface is similar figures; The light intensity distributions of shining the described exciting light of described photoirradiated surface becomes the successional light intensity distributions that equates in place, the locus light intensity identical with described photoirradiated surface.
According to this formation, owing to exciting light can not shone in light-emitting component lavishly, can make the fluorescence volume maximization of the taking-up relative with the excitation light quantity that drops into.
In described light supply apparatus, preferred: described light-emitting component is set to, and photoirradiated surface is overlapped in the focal position of described light-gathering optics; Be that the integral optical system at two ends is set at described lens arra and described light-gathering optics, with the face of described photoirradiated surface conjugation be infinity.
Constitute according to this, even the relative position of light-gathering optics and lens arra is not set meticulously, by the relative position of light-gathering optics and light-emitting component is set, also can make according to overlapping to the exciting light of light-emitting component.And, because in the not imaging of exciting light of place, focal position, make the light intensity equalization easily so the picture of exciting light is fuzzy.Therefore, easily light quantity is controlled in order to avoid to produce light in light-emitting component saturated.
In described light supply apparatus, preferred: the plan view shape that constitutes the photoirradiated surface of the plan view shape of a plurality of lenslets of described lens arra and described light-emitting component is similar figures; The area of overlooking of the photoirradiated surface of described light-emitting component equates substantially with the size of the ejaculation pupil of described integral optical system.
According to this formation, exciting light can not shone in light-emitting component lavishly.Therefore, can make the fluorescence volume maximization of the taking-up relative with the excitation light quantity that drops into.
In described light supply apparatus, preferred: as to have the described synthetic exciting light that penetrates from the synthetic portion of described exciting light is carried out the collector lens of optically focused and the parallelization lens that the described synthetic exciting light that penetrates from described collector lens is carried out parallelization; Described parallelization lens have the concave surface of rotary secondary surface shape the either party of the plane of incidence or outgoing plane.
Constitute according to this, the depth of parallelism of the exciting light that is incident in lens arra is improved.Therefore, easily the equalization of the exciting light that adopts lens arra and light-gathering optics is controlled as design ground, can the reduction of luminescence efficiency easily be suppressed.
In described light supply apparatus, preferred: in the described parallelization lens, the described plane of incidence is that described concave surface, described outgoing plane are the plane.
Constitute according to this, the depth of parallelism of the exciting light of transmission parallelization lens is further improved.Therefore, adopted the equalization of the exciting light of lens arra and light-gathering optics easily, made light-emitting component luminous to saturated inhibition of light easily.
In described light supply apparatus, preferred: in the described parallelization lens, the described plane of incidence is that the convex surface of dome shape, described outgoing plane are described concave surface.
Constitute according to this, the depth of parallelism of the exciting light of transmission parallelization lens is further improved.Therefore, adopted the equalization of the exciting light of lens arra and light-gathering optics easily, made light-emitting component luminous to saturated inhibition of light easily.
In described light supply apparatus, preferably: described concave surface, to establish intersection point with the central shaft of described concave surface and described light shafts be initial point, be the Z axle with described central shaft, be that coordinate figure in the r θ Z cylindrical-coordinate system of r axle is r and Z and to establish paraxial curvature be c, establish the constant of the cone when being K with the axle with described orthogonality of center shaft, be the shape of representing by following formula:
(formula 1)
Z - c · r 2 1 + 1 - ( 1 + K ) · c 2 · r 2 = 0 · · · ( 1 ) .
Constitute according to this, can easily determine the shape of concave surface.And, because as long as adopt and to have the aspheric lens that determine based on this formula, spherical aberration is diminished, further improve so can make from the depth of parallelism of the light of light supply apparatus ejaculation.
In described light supply apparatus, preferably constitute: the 1st exciting light among described a plurality of the 1st exciting lights is incident in the regional different zone of carrying out incident with described a plurality of the 2nd exciting lights in the synthetic portion of described exciting light.
Constitute according to this, can not apply excessive thermal load in the specific region of the synthetic portion of exciting light.Therefore, can not result from yet and adopt 2 light source portion and the lifetime of the synthetic portion of exciting light.
Projector of the present utility model is characterised in that: possess described light supply apparatus, the optical modulation element that the light that penetrates from described light supply apparatus is modulated and the projection optical system that the light by described optical modulation element modulation is carried out projection.
According to this formation, because have described light supply apparatus, so can provide the utilization ratio that can not can make light further to improve the projector of the brightness of display frame with reducing.
Description of drawings
Fig. 1 is the synoptic diagram of the optical system of the projector that relates to of expression the 1st embodiment of the present utility model.
Fig. 2 is the front view of the solid light source array that possesses of light supply apparatus.
Fig. 3 is the figure of the incident area of the 1st exciting light in the synthetic portion of expression exciting light and the 2nd exciting light.
Fig. 4 is the side view of non-Focused Optical system.
Fig. 5 is the key diagram of behavior that expression is incident in the exciting light of lens integrator.
Fig. 6 is the figure of light intensity distributions of exciting light of the photoirradiated surface of the irradiation luminous element of expression.
Fig. 7 is the brief description figure of polarization conversion device.
Fig. 8 is the figure of the variation of expression non-focusing optical system.
Fig. 9 is the synoptic diagram of the light supply apparatus that relates to of expression the 2nd embodiment of the present utility model.
Figure 10 is the front view of the solid light source array that possesses of light supply apparatus.
Figure 11 is the figure of the incident area of the 1st exciting light in the synthetic portion of expression exciting light and the 2nd exciting light.
Figure 12 is the synoptic diagram of the light supply apparatus that relates to of expression the 3rd embodiment of the present utility model.
Figure 13 is the synoptic diagram of the light supply apparatus that relates to of expression the 4th embodiment of the present utility model.
Figure 14 is the synoptic diagram of the light supply apparatus that relates to of expression the 5th embodiment of the present utility model.
Figure 15 is the synoptic diagram of the synthetic portion of exciting light.
Figure 16 is the synoptic diagram of the optical system of the projector that relates to of expression the 6th embodiment of the present utility model.
Figure 17 is the key diagram of the function of expression the 1st lens arra and overlapping optical system.
Figure 18 is the synoptic diagram of the optical system of the projector that relates to of expression the 7th embodiment of the present utility model.
Symbol description
1,2,3,4,5,6,7 ... light supply apparatus, 10,10A ... the 1st light source portion, 11,11A ... the 1st solid light source array, 13,13A ... the 1st solid light source, 14,14A ... the 1st collimator lens array, 15,15A ... the 1st collimation lens, 20 ... the 2nd light source portion, 21 ... the 2nd solid light source array, 23 ... the 2nd solid light source, 24 ... the 2nd collimator lens array, 25 ... the 2nd collimation lens, 30,30A, 30B, 30C, 30D ... exciting light synthesizes portion, 32,32B, 32C, 32D ... polarization separating film, 33,33B, 33C ... the 1st transparent component, 34,34B, 34C ... the 2nd transparent component, 41,43 ... collector lens, 42,44 ... the parallelization lens, 42a, 44a ... the plane of incidence, 42b, 44b ... outgoing plane, 51 ... the 1st lens arra (lens arra), 51a ... lenslet, 52 ... the 2nd lens arra, 70 ... overlapping optical system, 80,80F ... light-emitting component, 200 ... look separates leaded light optical system, 400R, 400G, 400B ... liquid crystal light-modulating device processed (optic modulating device), 600 ... projection optical system, 1000,2000,3000 ... projector, AR1 ... regional transmission, AR2 ... reflector space, SF1 ... the 1st interface, SF2 ... the 2nd interface, P ... penetrate pupil, PL ... long spacing, PS ... short spacing, VL ... long limit, VS ... minor face
Embodiment
Below, with reference to accompanying drawing, describe about embodiment of the present utility model.So embodiment is represented a mode of the present utility model, is not that this utility model is limited, and can at random change in the scope of technical thought of the present utility model.And, in following accompanying drawing, being used for making each to constitute easily and understanding, the engineer's scale in each structure and/or quantity etc. are inequality with practical structure.
The 1st embodiment
An embodiment about projector of the present utility model describes with reference to Fig. 1 ~ Fig. 8.
In the present embodiment, enumerate Jie as projector 1000 and will comprise that by projection optical system the projector that the coloured light of the image information that generates with light-modulation panel projects to the projection type on the screen (being projected face) is that example describes.
Also have, in the following description, as required the XYZ orthogonal coordinate system is set, and describe with reference to the position relation of this XYZ orthogonal coordinate system about each member.In the present embodiment, be directions X with the direction of the optical axis that is parallel to the light that penetrates from the 1st light source portion 10, be Y-direction, Z direction with 2 directions that are orthogonal to directions X.
Fig. 1 is the synoptic diagram of the optical system of the projector 1000 that relates to of expression the 1st embodiment of the present utility model.
As be shown in Fig. 1 ground, projector 1000 possess lighting device 100, look separate leaded light optical system 200, as the liquid crystal light-modulating of optic modulating device device 400R processed, liquid crystal light-modulating device 400G processed, liquid crystal light-modulating device 400B processed, cross colour splitting prism 500 and projection optical system 600.
Lighting device 100 possesses light supply apparatus 1, the 1st lens arra 120, the 2nd lens arra 130, polarization conversion device 140 and overlapping lens 150.Lighting device 100 penetrates the white light that comprises red light, green light and blue light.
Light supply apparatus 1 possesses the 1st light source portion 10, the 2nd light source portion 20, the synthetic portion 30 of exciting light, non-focusing optical system 40, lens integrator 50, dichronic mirror 60, overlapping optical system 70 and light-emitting component 80 as being shown in Fig. 1 ground.
At this, be included in the 2nd lens arra 52 of lens integrator 50 and the light-gathering optics that overlapping optical system 70 constitutes in the utility model.
The 1st light source portion 10 has the 1st solid light source array 11 and the 1st collimator lens array 14.The 2nd light source portion 20 has the 2nd solid light source array 21 and the 2nd collimator lens array 24.
Fig. 2 is the front view of the solid light source array (the 1st solid light source array 11, the 2 solid light source arrays 21) that possesses of light supply apparatus 1.Fig. 2 (a) is the figure (below, be made as front view) that sees the 1st solid light source array 11 from the synthetic portion of exciting light 30 sides, and Fig. 2 (b) is the front view of the 2nd solid light source array 21.
The 1st solid light source array 11 as be shown in Fig. 2 (a) has substrate 12 and penetrates 20 the 1st solid light sources 13 of blue light as exciting light.In the 1st solid light source array 11,20 the 1st solid light sources 13 are configured to the rectangular of 5 row, 4 row.
Also have, in light supply apparatus 1 of the present utility model, the number of the 1st solid light source 13 is not limited to 20, so long as get final product more than 2.
Substrate 12 has the function of carrying the 1st solid light source 13.For example, substrate 12 has electric power is carried out the function of intermediary between two parties with respect to the supply of the 1st solid light source 13 and/or made the function etc. of the heat heat radiation that produces at the 1st solid light source 13.
The 1st solid light source 13 comprises as the exciting light ejaculation blue light (peak value of luminous intensity: semiconductor laser about 460nm).This semiconductor laser constitutes as being shown in Fig. 2 (a), has the light-emitting zone of rectangular shape, and is bigger than the extended corner along the light of the long side direction of described light-emitting zone along the extended corner of the light of the short side direction of light-emitting zone.The size of the light-emitting zone in the semiconductor laser for example is that long limit VL is that 8 μ m, minor face VS are 2 μ m.
13 ejaculations of the 1st solid light source comprise the blue light with respect to the P polarized light of the plane of incidence of the synthetic portion 30 of exciting light.
Also have, be incident in the formation that exciting light synthesizes portion 30 as the exciting light from the 1st light source portion 10 as the exciting light that comprises the P polarized light, be not limited to adopt as described the formation of the solid light source that penetrates the exciting light that comprises the P polarized light.For example, also can adopt and penetrate solid light source and λ/2 plates comprise with respect to the exciting light of the S polarized light of the plane of incidence of the synthetic portion 30 of exciting light.
The 1st collimator lens array 14 arranges corresponding to a plurality of the 1st solid light sources 13, has 20 the 1st collimation lenses 15.Though omit the explanation of being undertaken by diagram, a plurality of the 1st collimation lenses 15 are configured to the rectangular of 5 row, 4 row.The 1st collimation lens 15 makes substantially parallelization of blue light that the 1st solid light source 13 penetrates among a plurality of the 1st solid light sources 13.The 1st collimation lens 15 comprises plano-convex lens.
The 1st collimator lens array 14 is configured to, and the plane in a plurality of the 1st collimation lenses 15 is towards the 1st solid light source array 11 sides.
Also have, the 1st collimator lens array 14 also can be configured to, and the convex surface in a plurality of the 1st collimation lenses 15 is towards the 1st solid light source array 11 sides.
The 2nd solid light source array 21 as be shown in Fig. 2 (b) has substrate 22 and penetrates 25 the 2nd solid light sources 23 of blue light as exciting light.In the 2nd solid light source array 21,25 the 2nd solid light sources 23 are configured to the rectangular of 5 row, 5 row.
Also have, in light supply apparatus 1 of the present utility model, the number of the 2nd solid light source 23 is not limited to 25, so long as get final product more than 2.
Substrate 22 has the function of carrying the 2nd solid light source 23.For example, substrate 22 has electric power is carried out the function of intermediary between two parties with respect to the supply of the 2nd solid light source 23 and/or made the function etc. of the heat heat radiation that produces at the 2nd solid light source 23.
The 2nd solid light source 23 comprises as the exciting light ejaculation blue light (peak value of luminous intensity: semiconductor laser about 460nm).This semiconductor laser constitutes as being shown in Fig. 2 (b), has the light-emitting zone of rectangular shape, and is bigger than the extended corner along the light of the long side direction of described light-emitting zone along the extended corner of the light of the short side direction of light-emitting zone.The size of the light-emitting zone in the semiconductor laser for example is that long limit VL is that 8 μ m, minor face VS are 2 μ m.
23 ejaculations of the 2nd solid light source comprise the blue light with respect to the S polarized light of the plane of incidence of the synthetic portion 30 of exciting light.
Also have, be incident in the formation that exciting light synthesizes portion 30 as the exciting light from the 2nd light source portion 20 as the exciting light that comprises the S polarized light, be not limited to adopt as described the formation of the solid light source that penetrates the exciting light that comprises the S polarized light.For example, also can adopt and penetrate solid light source and λ/2 plates comprise with respect to the exciting light of the P polarized light of the plane of incidence of the synthetic portion 30 of exciting light.
The 2nd collimator lens array 24 arranges corresponding to a plurality of the 2nd solid light sources 23, has 25 the 2nd collimation lenses 25 that make respectively from substantially parallelization of blue light of a plurality of the 2nd solid light sources 23 ejaculations.Though omit the explanation of being undertaken by diagram, a plurality of the 2nd collimation lenses 25 are configured to the rectangular of 5 row, 5 row.The 2nd collimation lens 25 makes substantially parallelization of blue light that the 2nd solid light source 23 penetrates among a plurality of the 2nd solid light sources 23.The 2nd collimation lens 25 comprises plano-convex lens.
The 2nd collimator lens array 24 is configured to, and the plane in a plurality of the 2nd collimation lenses 25 is towards the 2nd solid light source array 21 sides.
Also have, the 2nd collimator lens array 24 also can be configured to, and the convex surface in a plurality of the 2nd collimation lenses 25 is towards the 2nd solid light source array 21 sides.
In the light supply apparatus 1 that present embodiment relates to, as be shown in Fig. 2 (a) and Fig. 2 (b), the long side direction of the light-emitting zone projection of the 1st solid light source 13 among a plurality of the 1st solid light sources 13 shape when the synthetic portion 30 of exciting light and short side direction and long side direction and short side direction with the shape of light-emitting zone projection when exciting light synthesizes portion 30 of the 2nd solid light source 23 among a plurality of the 2nd solid light sources 23 are had reciprocal relation respectively.In more detail, when with the light-emitting zone projection of the 1st solid light source 13 during in the synthetic portion 30 of exciting light, the long side direction of light-emitting zone is Z-direction, and the short side direction of light-emitting zone is Y direction.On the other hand, when with the light-emitting zone projection of the 2nd solid light source 23 during in the synthetic portion 30 of exciting light, the long side direction of light-emitting zone is Y direction, and the short side direction of light-emitting zone is Z-direction.So, with the light-emitting zone projection of the 1st solid light source 13 when the synthetic portion 30 of exciting light shape and the light-emitting zone projection of the 2nd solid light source 23 shape when the synthetic portion 30 of exciting light had long side direction and the short side direction reciprocal relation that becomes respectively.And, the substrate 12 main rectangular shape that are considered as, the substrate 22 main square shape that are considered as.The size of substrate 12 is big or small littler than substrate 22.
The 1st light source portion 10 and the 2nd light source portion 20 as be configured to depart from mutually from the blue light (the 1st exciting light) of the 1st light source portion 10 and from the blue light (the 2nd exciting light) of the 2nd light source portion 20 in the plane of the optical axis of the blue light that synthesizes perpendicular to the synthetic portion 30 by exciting light described later with being shown in Fig. 1, Fig. 2 (a), Fig. 2 (b) and Fig. 3.
So in the 1st solid light source array 11 that present embodiment relates to, a plurality of the 1st solid light sources 13 are arranged and are configured to rectangular at the long side direction of separately light-emitting zone and short side direction.Be the 1st direction with the described long side direction in the 1st solid light source array 11.And in the 2nd solid light source array 21, a plurality of the 2nd solid light sources 23 are arranged and are configured to rectangular at the long side direction of separately light-emitting zone and short side direction.Be the 2nd direction with the described long side direction in the 2nd solid light source array 21.
In the 1st collimator lens array 14, a plurality of the 1st collimation lenses 15 are corresponding to the configuration of a plurality of the 1st solid light sources 13, arrange in the 1st direction with the direction that the 1st direction is intersected and are configured to rectangular.The spacing PL of a plurality of the 1st collimation lenses 15 on the direction that spacing PS ratio and the 1st direction of a plurality of the 1st collimation lenses 15 on the 1st direction intersected is short.
Similarly, in the 2nd collimator lens array 24, a plurality of the 2nd collimation lenses 25 are corresponding to the configuration of a plurality of the 2nd solid light sources 23, arrange in the 2nd direction with the direction that the 2nd direction is intersected and are configured to rectangular.The spacing PL of a plurality of the 2nd collimation lenses 25 on the direction that spacing PS ratio and the 2nd direction of a plurality of the 2nd collimation lenses 25 on the 2nd direction intersected is short.
Below, be the long spacing direction with the direction of the long relatively long spacing of lenticular spacing, with lenticular spacing relatively the direction of short short spacing be the short spacing direction.
The synthetic portion 30 of exciting light by make from a plurality of blue lights (the 1st exciting light) of the 1st light source portion 10 by and a plurality of blue lights (the 2nd exciting light) from the 2nd light source portion 20 are reflected, to synthesizing from a plurality of blue lights of the 1st light source portion 10 with from a plurality of blue lights of the 2nd light source portion 20.30 pairs in the synthetic portion of exciting light synthesizes from a plurality of blue lights of the 1st light source portion 10 with from a plurality of blue lights of the 2nd light source portion 20, and penetrates as synthetic exciting light.The synthetic portion 30 of exciting light have make the light that comprises the P polarized light by and polarization separating film that the light that comprises the S polarized light is reflected.The synthetic portion 30 of exciting light is configured to, and the angle of the synthetic face of the optical axis 10ax of non-focusing optical system 40 and exciting light forms predetermined angle (for example 45 degree degree).
Fig. 3 is the figure of the incident area of the 1st exciting light in the synthetic portion 30 of expression exciting light and the 2nd exciting light.In Fig. 3, the part of surrounding with solid line is the incident area of the 1st exciting light, is the incident area of the 2nd exciting light with the part of dotted line.
As be shown in Fig. 3 ground, in the present embodiment, constitute the 1st exciting light that penetrates from the 1st light source portion 10 and from the synthetic portion 30 of each comfortable exciting light of the 2nd exciting light that the 2nd light source portion 20 penetrates, be incident in different zone mutually.The incident area of the 1st exciting light is distributed as the rectangular of 5 row, 4 row, and the incident area of the 2nd exciting light is distributed as the rectangular of 5 row, 5 row.Its result obtains the rectangular intensity distributions that 5 row 9 are listed as.
Fig. 4 is the side view of non-Focused Optical system 40.
As be shown in Fig. 4 ground, and non-focusing optical system 40 has collector lens 41 and parallelization lens 42, and they are arranged in proper order by this on light path.Synthesize the synthetic exciting light of portion's 30 ejaculations with collector lens 41 optically focused from exciting light.After this, with the synthetic exciting light of collector lens 41 optically focused with 42 parallelizations of parallelization lens.By transmission non-focusing optical system 40 so, the narrowed width of the light shafts integral body of synthetic exciting light.
At this, parallelization lens 42 are single concavees lens, and its plane of incidence 42a is that concave surface, the outgoing plane 42b of aspheric surface shape is the plane.If the shape to plane of incidence 42a further describes particularly, then the aspherical shape of the plane of incidence 42a of parallelization lens 42 becomes the shape of the relation that satisfies following formula (2) substantially.That is, in plane of incidence 42a, become the rotary secondary surface shape by the aspherical shape that makes plane of incidence 42a, can penetrate the high light of the depth of parallelism.
(formula 2)
Z - c · r 2 1 + 1 - ( 1 + K ) · c 2 · r 2 - ΣAn · r n = 0 · · · ( 2 )
At this, r, Z be as being shown in Fig. 4 ground, for the intersection point with the central shaft 10ax of the light shafts of the plane of incidence 42a of parallelization lens 42 and synthetic exciting light is initial point L0, the coordinate figure of rotational symmetry in the r of central shaft 10ax θ Z cylindrical-coordinate system.Also have, in Fig. 4, the Z direction with the ejaculation direction of exciting light for just.R represents to leave initial point L0 to the distance of the direction that is orthogonal to central shaft 10ax.θ represents to leave the angle of predetermined r direction, but as understanding ground from formula (2), aspheric shape is not relied in angle θ.
And in the formula (2), paraxial curvature c is illustrated in to be assumed to and utilizes the plano-concave lens of dome shape to be transformed to the curvature of this sphere under the situation of directional light the light with the synthetic exciting light of collector lens 41 optically focused.That is, near axis area (near the zone the turning axle), have the plano-concave lens of this curvature c by employing, can be transformed to directional light with the light of the synthetic exciting light of collector lens 41 optically focused.
K is the value that is called the constant of the cone.By the value of this constant of the cone K, the rotary secondary surface shape is defined as specific shape.That is, be under the situation of-1<k<0 in the value of constant of the cone K, aspheric surface becomes the ellipse of revolution face.And, be that aspheric surface becomes the paraboloid of revolution under the situation of K=-1 in the value of constant of the cone K.And then, be that aspheric surface becomes the hyperboloid of revolution under the situation of K<-1 in the value of constant of the cone K.
And, the 3rd on the left side for the dependence that is called general aspheric surface item in the function of distance r, but because be abundant little value, so ignore in the present embodiment.
The aspheric rotary secondary surface shape of the parallelization lens 42 in the present embodiment determines by following method based on the following formula (3) on the 3rd on the left side of ignoring formula (2).
(formula 3)
Z - c · r 2 1 + 1 - ( 1 + K ) · c 2 · r 2 = 0 · · · ( 3 )
At first, the thickness in the centre of the refractive index n of the curvature of the plane of incidence 42a of the shape of collector lens 41, parallelization lens 42, parallelization lens 42, parallelization lens 42 and the position that arranges of parallelization lens 42 are taken in, ask the value of paraxial curvature c.
Particularly, at first, be predetermined curvature, refractive index n, the centre of the plane of incidence 42a of the shape of collector lens 41 and parallelization lens 42 thickness, the position is set.And, as the replacement of parallelization lens 42, suppose that the identical and outgoing plane of the thickness in curvature, refractive index, centre of the plane of incidence is the concavees lens of dome shape.Then, with respect to the identical shaped collector lens of the shape that is predetermined, described concavees lens are disposed under the situation that the position is set of parallelization lens 42, ask if there is no spherical aberration then can be transformed to the curvature of the plane of incidence of these concavees lens of directional light.The value of the curvature of so trying to achieve becomes paraxial curvature c.
Next, ask constant of the cone K.At this, in parallelization lens 42, plane of incidence 42a is the aspheric surface of setting based on formula (3).Therefore, the exciting light that is incident in parallelization lens 42 is substantially parallel direction by the refraction going direction changing at plane of incidence 42a, almost is subjected to less than refraction action in outgoing plane 42b.Its result, the relation of the refractive index n of parallelization lens 42 and constant of the cone K becomes fixing.Also have, the aspheric constant of the cone K of the reflector shape of parallelization lens 42 is substantially with K=-n 2Determine.
Thereby in the present embodiment, constant of the cone K can be with K=-n 2Try to achieve.So the aspheric constant of the cone K of parallelization lens 42 is the scope of-2.1<k<-3.8.Thereby, plane of incidence 42a is become under the situation of aspherical shape, make plane of incidence 42a become the hyperboloid of revolution and be shaped as good.
If adopt so parallelization lens 42 of design, then the exciting light that can make transmission cross non-focusing optical system 40 becomes the high light of the depth of parallelism.
The synthetic exciting light that non-focusing optical system 40 is crossed in transmission is incident in lens integrator 50.Lens integrator 50 has the 1st lens arra 51 and the 2nd lens arra 52, and they are arranged in proper order by this on light path.The 1st lens arra 51, the 2nd lens arra 52 make from the illuminance distributionization of the light of non-focusing optical system 40 ejaculations.
The exciting light that lens integrator 50 is crossed in transmission is incident in dichronic mirror 60.Dichronic mirror 60 for example is stacked on glass surface with the dielectric multilayer film and constitutes.
The coloured light that dichronic mirror 60 has the wavelength coverage that makes exciting light optionally reflects, makes the wavelength selectivity of the coloured light transmission of the wavelength coverage beyond it.Particularly, dichronic mirror 60 makes the blue light reflection, makes the long light of wavelength ratio blue light (for example, the long light of wavelength ratio 480nm) transmission.
Exciting light with dichronic mirror 60 reflections is incident in overlapping optical system 70, imaging on light-emitting component 80.
Fig. 5 is that expression is incident in the exciting light (blue light) of lens integrator 50 up to the key diagram of the behavior of shining the exciting light till light-emitting component 80.
As be shown in Fig. 5 ground, and the 1st lens arra 51 comprises a plurality of the 1st lenslet 51a, the 2nd lens arra 52 comprises a plurality of the 2nd lenslet 52a.And the plan view shape of the 1st lenslet 51a and the 2nd lenslet 52a is the basic similar figures of plan view shape with the photoirradiated surface 80a of light-emitting component 80.
Also have, in Fig. 5, for convenience, only represent the part corresponding to the irradiation area 80a of exciting light among the light-emitting component 80.The irradiation area 80a of the exciting light in the luminescent coating 82 is for example for overlooking the basic square shape of 1mm * 1mm.
In the 1st lens arra 51 and the 2nd lens arra 52, the 1st lenslet 51a is corresponding one by one with the 2nd lenslet 52a.The light spatiality ground that penetrates from non-focusing optical system 40 separately is incident in a plurality of the 1st lenslet 51a, and the 1st lenslet 51a makes the photoimaging of incident in the 2nd corresponding lenslet 52a.Thus, at a plurality of the 2nd lenslet 52a separately, form the secondary souce picture.
And, be situated between by dichronic mirror 60 with overlapping optical system 70 optically focused, imaging on light-emitting component 80 from the light that penetrates separately of a plurality of the 2nd lenslet 52a.If in other words, then comprise the 2nd lens arra 52 with overlapping optical system 70 and the light-gathering optics that constitutes makes the photoimaging of incident in the photoirradiated surface 80a of corresponding light-emitting component 80.
Overlapping optical system 70 comprises the 1st lens 71 and the 2nd lens 72 and constitutes.The 1st lens 71 and the 2nd lens 72 comprise biconvex lens.Also have, the shape of the 1st lens 71 and the 2nd lens 72 is not to be defined in described shape.Generally speaking, can make the exciting light with dichronic mirror 60 reflections be concentrated on predetermined spot position as long as comprise the overlapping optical system of the 1st lens 71 and the 2nd lens 72.And the sheet number that constitutes the lens of overlapping optical system 70 both can be 1, also can be for more than 3.
In so constituting, comprise the 2nd lens arra 52 and overlapping optical system 70 and the optical system that constitutes constitutes good as follows: the photoirradiated surface 80a of the lens face of the 1st lens arra 51 and light-emitting component 80 is in conjugate relation.That is, constitute good as follows: comprise the 2nd lens arra 52 with overlapping optical system 70 and the object plane of the optical system that constitutes is consistent with the lens face of the 1st lens arra 51, image planes are consistent with photoirradiated surface 80a.Thus, can be at photoirradiated surface 80a, the exciting light of exposure intensity distribution equalization.
At this, so-called " lens face of the 1st lens arra 51 " is the face of the imagination of the lowest point between a plurality of the 1st lenslet 51a that connect the 1st lens arra 51 and have.
Turn back to Fig. 1, light-emitting component 80 is for to sending the rotation fluorescent plate of the so-called reflection-type of fluorescence with the side same side of exciting light incident.Light-emitting component 80 forms luminescent coating 82 around the turning axle of swivel plate 81 on the swivel plate 81 that drives by motor 83 rotation.Luminescent coating 82 comprises that phosphor particles 82a(is with reference to Fig. 5) and adhesive.
At this light-emitting component 80, the exciting light (blue light) by the 1st lens 71 and the 2nd lens 72 optically focused carries out incident from the surface of luminescent coating 82.And light-emitting component 80 penetrates the fluorescence that luminescent coating 82 sends towards the side same side with exciting light incident.Fluorescence comprises red light and green light.
Swivel plate 81 rotates with 7500rpm in use.The diameter of swivel plate 81 is 50mm, constitutes, and the focal point that is incident in the blue light of luminescent coating 82 is positioned at the about 22.5mm of the rotation center that leaves swivel plate 81 place.That is to say that swivel plate 81 moves, so that the focal point of blue light is with about 18m/ speed picture circle around turning axle of second.
Swivel plate 81 comprises the material that fluorescence that luminescent coating 82 is sent reflects.As the material of swivel plate 81, for example can adopt high metal material of the thermal conductivity of Al etc. etc.
Luminescent coating 82 has the phosphor particles 82a that sends fluorescence, has the peak value that exciting light (blue light) is absorbed and is transformed to general 490 ~ 750nm(luminous intensity: the function of fluorescence 570nm).In this fluorescence, comprise near green light (the wavelength 530nm) and near red light (the wavelength 630nm).
Phosphor particles 82a is for absorbing and send the particulate fluorescent material of fluorescence to the exciting light that penetrates from the 1st light source portion 10 that is shown in Fig. 1 and the 2nd light source portion 20.For example, in phosphor particles 82a, comprise that the blue light excitation by the about 460nm of wavelength sends the material of fluorescence, the part of exciting light is transformed to the light of the wavelength coverage that comprises red wavelength coverage~green and penetrates.
As phosphor particles 82a, can adopt known YAG(yttrium aluminum garnet usually) the class fluorophor.For example, can to adopt mean grain size be 10 μ m with (Y, Gd) 3(Al, Ga) 5O 12: the YAG class fluorophor of the composition that Ce represents.Also have, the formation material of phosphor particles both can be a kind, also can will mix the particulate of the formation material formation of adopting more than 2 kinds as phosphor particles.
Fig. 6 is the figure of light intensity distributions of exciting light of the photoirradiated surface 80a of the irradiation luminous element 80 of expression.In Fig. 6, transverse axis is represented irradiation position, and the longitudinal axis represents to encourage light intensity (radiation illumination).
As be shown in Fig. 3 ground, in the locus before being incident in the 1st lens arra 51, the light intensity distributions of exciting light is corresponding to the ordered state of a plurality of solid light sources in the 1st light source portion 10 and the 2nd light source portion 20, and discreteness ground exists bright part and dark part.With respect to this, after by overlapping optical system 70, in the locus before being incident in photoirradiated surface 80a, exciting light is configured as the basic square shape of 1mm * 1mm.Thus, exciting light light intensity in whole zone of photoirradiated surface 80a is equal substantially, as is shown in Fig. 6 ground, becomes the successional light intensity distributions near the light intensity distributions of so-called silk hat shape.Substantially the uniform regional SA of the light intensity distributions of exciting light becomes the size corresponding to photoirradiated surface 80a in Fig. 6.
At light-emitting component 80, compare the irradiates light intensity distributions near uniform exciting light as described with before the transmission lens integrator 50.And the exciting light of irradiation is configured as the basic identical shape of plan view shape with the photoirradiated surface 80a of light-emitting component 80.Therefore, whole of photoirradiated surface 80a the basic exciting light uniformly of light intensity distributions is shone in light-emitting component 80 easily, in order to avoid it is saturated to produce the light of fluorescence in photoirradiated surface 80a.Thereby light-emitting component 80 can be as the secondary souce that sends fluorescence RG from the whole face of photoirradiated surface 80a well.
With respect to the fluorescence RG that penetrates from light-emitting component 80, overlapping optical system 70 works as pickup optical system.Therefore fluorescence RG is incident in dichronic mirror 60 after with overlapping optical system 70 parallelizations.After this, fluorescence RG transmission dichronic mirror 60 and penetrating towards lens arra 120.
Also have, at dichronic mirror 60, carrying out the surface of the plane of incidence opposition side of incident with the light from overlapping optical system 70, never the blue light that penetrates of illustrated other light supply apparatus carries out incident, and to from parallel direction (towards the lens arra 120) reflection of the ray axis of the light of overlapping optical system 70.
That is, the light that penetrates from dichronic mirror 60 become the red light that penetrates from light-emitting component 80 and green light colour mixture fluorescence RG and the white light L that forms from the blue light B colour mixture that other light supply apparatus penetrates.
The 1st lens arra 120 has for a plurality of the 1st lenslets 122 that will be divided into a plurality of beamlets from the light of light supply apparatus 10 as being shown in Fig. 1 ground.The 1st lens arra 120 has cuts apart the function of optical element with what the light from light supply apparatus 1 was divided into a plurality of beamlets as light beam, and have a plurality of the 1st lenslets 122 with lighting optical axis 100ax plane orthogonal in be arranged in the rectangular formation of multiple lines and multiple rows.Though omit the explanation of being undertaken by diagram, the outer shape of the 1st lenslet 122 is basic similar figures about the outer shape of the image forming area of liquid crystal light-modulating device 400R processed, 400G, 400B.
The 2nd lens arra 130 has a plurality of the 2nd lenslets 132 corresponding to a plurality of the 1st lenslets 122 of the 1st lens arra 120.The 2nd lens arra 130 is with overlapping lens 150, and the picture with each the 1st lenslet 122 that makes the 1st lens arra 120 images near the function of image forming area of liquid crystal light-modulating device 400R processed, 400G, 400B.The 2nd lens arra 130 has a plurality of the 2nd lenslets 132 are arranged in multiple lines and multiple rows in the plane that is orthogonal to lighting optical axis 100ax rectangular formation.
Polarization conversion device 140 makes from the polarization state unanimity of lens arra 120, the 130 light L that penetrate.As being shown in Fig. 7 ground, polarization conversion device 140 comprises a plurality of polarization conversion units 141.Polarization conversion unit 141 is corresponding one by one with the 2nd lenslet 132.Be incident in incident area 142 corresponding to the polarization conversion unit 141 of the 2nd lenslet 132 from the light L of the secondary souce picture that is formed at the 2nd lenslet 132.
At polarization conversion unit 141 separately, corresponding to incident area 142, arrange below the polarizing beam splitting film 143(, be called PBS film 143) and polarizer 145.The light L that is incident in incident area 142 is separated into P polarized light L1 and S polarized light L2 with respect to PBS film 143 by PBS film 143.Side's polarized light of P polarized light L1, S polarized light L2 (be S polarized light L2 at this) is incident in polarizer 145 carried out reflection with reflecting member 144 after.The S polarized light L2 that is incident in polarizer 145 becomes P polarized light L3 by the polarization state that polarizer 145 polarization states are transformed to the opposing party's polarized light (being P polarized light L1 at this), and L1 penetrates with the P polarized light.
Overlapping lens 150 make the light that penetrates from polarization conversion device 140 at illuminated region overlapping.The light that penetrates from light supply apparatus 100 is after spatiality ground is cut apart, and the axial symmetry by overlapping illuminance distributionization around the ray axis 100ax improves.
Overlapping lens 150 are overlapped near the image forming area of liquid crystal light-modulating device 400R processed, 400G, 400B optical element for being used for making this beamlet optically focused.Overlapping lens 150 are configured to, the optical axis basically identical of the optical axis of overlapping lens 150 and lighting device 100.
Also have, overlapping lens 150 also can be with a plurality of lens combination compound lens is altogether constituted.
By so constituting, the 1st lens arra 120, the 2nd lens arra 130 and overlapping lens 150 make from the light of light supply apparatus 1 more even as the lens integral optical system.
Also have, also can adopt the bar-shaped integral optical system that possesses integrating rod to replace the lens integral optical system.
Look separates leaded light optical system 200 and possesses dichronic mirror 210,220, catoptron 230,240,250 and relay lens 260,270.Look separate leaded light optical system 200 have the light from lighting device 100 is separated into red light, green light and blue light and with the coloured light leaded light separately of red light, green light and blue light in the function of the liquid crystal light-modulating that becomes lighting object device 400R processed, 400G, 400B.
Separate between leaded light optical system 200 and liquid crystal light-modulating device 400R processed, 400G, the 400B configuration collector lens 300R, 300G, 300B at look.
Dichronic mirror 210,220 is for being formed with the mirror body of the wavelength selective transmission film that light that light to the presetted wavelength scope reflects the wavelength coverage that makes other passes through at substrate.Dichronic mirror 210 is for reflecting the dichronic mirror that green light and blue light components are passed through to the red light component.Dichronic mirror 220 is for reflecting the dichronic mirror that blue light components is passed through to green light components.The catoptron of catoptron 230 for the red light component is reflected.The catoptron of catoptron 240,250 for blue light components is reflected.
With catoptron 230 reflections, be incident in the image forming area of the liquid crystal light-modulating device 400R processed that red light uses with the red light of dichronic mirror 210 reflection by collector lens 300R.
Green light by dichronic mirror 210 is with dichronic mirror 220 reflections, is incident in the image forming area of the liquid crystal light-modulating device 400G processed that green light uses by collector lens 300G.
Blue light by dichronic mirror 220 is incident in the image forming area of the liquid crystal light-modulating device 400B processed that blue light uses via catoptron 240, relay lens 270, the catoptron 250 of emitting side, the collector lens 300B of relay lens 260, light incident side.Relay lens 260,270 and catoptron 240,250 have the function that the blue light components of transmission dichronic mirror 220 is directed at liquid crystal light-modulating device 400B processed.
Also have, in the light path of blue light so relay lens 260, the 270th is set, because the length of the light path of blue light is long than the length of the light path of other coloured light, so will prevent the reduction of the utilization ratio of the light that causes owing to dispersing of light etc.Though in the projector 1000 that embodiment 1 relates to, constitute because so the length of the light path of blue light will be grown to be made as so, but also can consider to make the length of light path of red light elongated, with relay lens 260,270 and catoptron 240,250 be used for the formation of the light path of red light.
The coloured light of liquid crystal light-modulating device 400R processed, 400G, the incident of 400B is modulated corresponding to image information and is formed coloured image, becomes the lighting object of lighting device 100.
Also have, though diagram is omitted, between each collector lens 300R, 300G, 300B and each liquid crystal light-modulating device 400R processed, 400G, 400B, dispose the light incident side polarization plates respectively.And, between each liquid crystal light-modulating device 400R processed, 400G, 400B and cross colour splitting prism 500, dispose the emitting side polarization plates respectively.By these light incident side polarization plates, liquid crystal light-modulating device 400R processed, 400G, 400B and emitting side polarization plates, carry out the optical modulation of each coloured light of incident.
Liquid crystal light-modulating device 400R processed, 400G, 400B will be for advancing the liquid crystal light-modulating device processed of the transmission-type of a pair of transparent glass substrate as the airtight envelope of the liquid crystal of electrooptics material, for example, be on-off element with the multi-crystal TFT, corresponding to the picture signal that gives, the polarization direction of 1 type rectilinearly polarized light penetrating from the light incident side polarization plates is modulated.
Cross colour splitting prism 500 is for synthesizing the optical element that forms coloured image to the optical image that has carried out modulation by the every coloured light that penetrates from the emitting side polarization plates.This cross colour splitting prism 500 forms and makes the basic square shape of overlooking that 4 right-angle prisms fit, and the interface at the basic X word shape that right-angle prism is fitted each other obtain forms the dielectric multilayer film.The dielectric multilayer film that is formed at a side interface of basic X word shape reflects red light, and the dielectric multilayer film that is formed at the opposing party interface reflects blue light.By these dielectric multilayer films, red light and blue light bending, by consistent with the direct of travel of green light, synthetic 3 kinds of coloured light.
The coloured image that penetrates from cross colour splitting prism 500 passes through projection optical system 600 enlarging projections, and R forms image in screen SC.
According to the light supply apparatus 1 of present embodiment, utilize the exciting light that penetrates from 2 light source portion (the 1st light source portion 10 and the 2nd light source portion 20) that comprise a plurality of solid light sources and send fluorescence.Therefore, the brightness of light supply apparatus 1 is further improved.
And, make from the exciting light of 2 light source portion utilize the synthetic portion 30 of exciting light carried out synthetic after, be concentrated on light-emitting component 80.Therefore, synthesize the situation of synthesizing on portion 30 ground with the exciting light that the exciting light from 2 light source portion is not adopted the utility model relate to and compare, can make exciting light be incident in the littler zone of light-emitting component with littler incident angle with respect to light-emitting component 80.That is to say, the increase of etendue is diminished.On this meaning, the reduction of the utilization ratio of the fluorescence light that results from 2 light source portion of employing and produce is diminished.
And, overlapping on light-emitting component 80 by the 1st lens arra 51 and light-gathering optics (comprising the light-gathering optics that the 2nd lens arra 52 and overlapping optical system 70 constitute) by being situated between from the exciting light of 2 light source portion, the light intensity distributions equalization.Therefore, can be in light-emitting component 80 integral body with same light intensity irradiation exciting light.Thus, easily light quantity is controlled in case in the zone of irradiation blasting light generation light saturated.
Thereby, can not can make the utilization ratio of exciting light the brightness of light supply apparatus 1 further be improved with reducing.
And, according to this formation, constitute, be incident in different zone mutually in the synthetic portion 30 of each comfortable exciting light of the 1st exciting light and the 2nd exciting light.Therefore, can not apply excessive thermal load in the specific region of the synthetic portion 30 of exciting light.Therefore, can not result from yet and adopt 2 light source portion and the lifetime of the synthetic portion 30 of exciting light.
And, constituting according to this, the synthetic portion 30 of exciting light has makes the light transmission that comprises the P polarized light and the polarization separating film that the light that comprises the S polarized light is reflected.And constitute, a plurality of the 1st exciting lights that penetrate from the 1st light source portion 10 are incident in the synthetic portion 30 of exciting light as the exciting light that comprises the P polarized light, and a plurality of the 2nd exciting lights that penetrate from the 2nd light source portion 20 are incident in the synthetic portion 30 of exciting light as the exciting light that comprises the S polarized light.Therefore, utilize the principle of polarization separating film, can synthesize with high efficient the 1st exciting light and the 2nd exciting light.
And, constituting according to this, the 1st solid light source 13 and the 2nd solid light source 23 both sides' solid light source comprises semiconductor laser.Semiconductor laser is because of small-sized and high output, so by becoming formation as described, become the light supply apparatus 1 of small-sized and high output.
And, constituting according to this, semiconductor laser is overlooked the light-emitting zone with rectangular shape.And constitute, bigger than the extended corner along the long side direction of light-emitting zone along the extended corner of the short side direction of light-emitting zone.And, as described, the light-emitting zone of the light-emitting zone of the 1st solid light source 13 and the 2nd solid light source 23 have long side direction and the reciprocal relation of short side direction separately.Therefore, utilize the characteristic of semiconductor laser, be difficult to be incident in the zone of polarization separating film 32 and the 2nd exciting light at the 1st exciting light and be incident between the zone of polarization separating film 32 and produce the gap.Thereby, can be in synthetic exciting light, producing inhomogeneous the inhibition.
Also have, synthetic portion 30 has under the situation that makes the light transmission that comprises the P polarized light and the polarization separating film 32 that the light that comprises the S polarized light is reflected at exciting light, and polarizer needn't be set separately.
And, in the synthetic portion 30 of each the comfortable exciting light that constitutes the 1st exciting light and the 2nd exciting light, be incident under the situation in mutual partly overlapping zone, can make the incident area of the 1st exciting light in the polarization separating film 32 and the 2nd exciting light narrow.Thereby, can seek the miniaturization of device.
And according to this formation, the 1st light source portion 10 has the 1st solid light source array 11 and the 1st collimator lens array 14, the 2 light source portion 20 have the 2nd solid light source array 21 and the 2nd collimator lens array 24.Thus, each comfortable parallelization of the 1st exciting light and the 2nd exciting light state under be incident in the synthetic portion 30 of exciting light.Therefore, be not incident in the situation of the synthetic portion 30 of exciting light under the state of parallelization than each leisure of the 1st exciting light and the 2nd exciting light, can drain to the outside to exciting light and suppress.Thereby, can synthesize with high efficient the 1st exciting light and the 2nd exciting light.
And according to this formation, a plurality of the 1st solid light sources 13 and a plurality of the 2nd solid light source 23 are configured to rectangular respectively in the 1st solid light source array 11 and the 2nd solid light source array 21.And a plurality of the 1st collimation lenses 15 and a plurality of the 2nd collimation lens 25 are configured to rectangular respectively in the 1st collimator lens array 14 and the 2nd collimator lens array 24.And, the light-emitting zone of the 1st collimation lens 15 and the 1st solid light source 13 has the long spacing direction relation corresponding with the short side direction of light-emitting zone of lenticular spacing, and has the short spacing direction relation corresponding with the long side direction of described light-emitting zone of lenticular spacing.And, the light-emitting zone of the 2nd collimation lens 25 and the 2nd solid light source 23 has the long spacing direction relation corresponding with the short side direction of light-emitting zone of lenticular spacing, and has the short spacing direction relation corresponding with the long side direction of described light-emitting zone of lenticular spacing.Thus, in the 1st solid light source array 11 and the 2nd solid light source array 21 both sides' solid light source array, a plurality of solid light sources fitly dispose.Therefore, can seek the miniaturization of the 1st solid light source array 11 and the 2nd solid light source array 21.And, a plurality of collimation lenses configuration fitly under corresponding to the state of the light radiation characteristic of semiconductor laser in the 1st collimator lens array 14 and the 2nd collimator lens array 24 both sides' collimator lens array.Therefore, can also seek each collimator lens array 14,24 miniaturization.Thereby, can seek the miniaturization of light supply apparatus 1.
And according to this formation, light-gathering optics comprises that the lens face of the 2nd lens arra 52 and overlapping optical system 70, the 1 lens arras 51 and photoirradiated surface 80a Jie of light-emitting component 80 are in conjugate relation by light-gathering optics.Thus, a plurality of sub-light shafts are overlapping well on the photoirradiated surface 80a of light-emitting component 80.For this reason, make the light intensity distributions equalization easily, easily light quantity is controlled in order to avoid to produce the light of light-emitting component 80 saturated.
And, constitute according to this, constituting the plan view shape of a plurality of lenslet 51a of the 1st lens arra 51 and the plan view shape of photoirradiated surface 80a is similar figures.And the light intensity distributions of the exciting light of irradiates light shadow surface 80a becomes the successional light intensity distributions in the locus place light intensity basic homogenising identical with photoirradiated surface 80a.Therefore, because exciting light is not shone lavishly in light-emitting component 80, can make the fluorescence volume maximization of the taking-up relative with the excitation light quantity that drops into.
And, constituting according to this, parallelization lens 42 have the concave surface of rotary secondary surface shape at plane of incidence 42a.Thus, the depth of parallelism of the exciting light that is incident in the 1st lens arra 51 is improved.Therefore, easily the equalization of the exciting light that adopted the 1st lens arra 51 and light-gathering optics is controlled as design ground, can the reduction of luminescence efficiency easily be suppressed.
And, constituting according to this, the plane of incidence 42a of parallelization lens 42 is concave surface and outgoing plane 42b is the plane.Thus, the depth of parallelism of the exciting light of transmission parallelization lens 42 is further improved.Therefore, adopted the equalization of the exciting light of the 1st lens arra 51 and light-gathering optics easily, made light-emitting component luminous to saturated inhibition of light easily.
And according to this formation, concave surface determines by described formula (3).Therefore, can easily determine the shape of concave surface.And, because as long as adopt and to have the aspheric lens that determine based on described formula (3), spherical aberration is diminished, further improve so can make from the depth of parallelism of the light of light supply apparatus 1 ejaculation.
According to the projector 1000 of present embodiment, because have described light supply apparatus 1, so the projector 1000 that the brightness that can provide the utilization ratio that it(?) can not can make light to make display frame further improves with reducing.
Also have, though in the present embodiment, parallelization lens 42 its plane of incidence 42a have aspherical shape, and also can adopt the outgoing plane side is the lens of aspherical shape.
Fig. 8 is the figure of the variation of the non-focusing optical system that relates to of expression present embodiment.
As be shown in Fig. 8 ground, and the non-focusing optical system 40A that this variation relates to has collector lens 43 and parallelization lens 44, and they are arranged in proper order by this on light path.
The outgoing plane 44b of the parallelization lens 44 that this variation relates to is the rotary secondary surface shape that satisfies the relation of described formula (3), and plane of incidence 44a is the convex surface of dome shape.So the aspheric rotary secondary surface shape of parallelization lens 44 is based on described formula (3), by determining as following method.
Particularly, at first, be predetermined curvature, refractive index n, the centre of the plane of incidence 44a of the shape of collector lens 43 and parallelization lens 44 thickness, the position is set.And, replace parallelization lens 44, suppose that the identical and outgoing plane of the thickness in curvature, refractive index, centre of the plane of incidence is the concavees lens of dome shape.Then, with respect to the identical shaped collector lens of the shape that is predetermined described concavees lens being disposed under the situation that the position is set of parallelization lens 44, ask the curvature of outgoing plane that can transmitted light be transformed to these concavees lens of directional light near axis area (near the zone the turning axle).
The value of the curvature of so trying to achieve becomes the paraxial curvature c in the described formula (3) that the shape of outgoing plane 44b is stipulated.At this, become under the situation on plane at the plane of incidence 44a that makes parallelization lens 44, be 0 with the curvature of plane of incidence 44a.
Next, ask constant of the cone K.In the light supply apparatus 1 of present embodiment, constant of the cone K changes its value limit by the limit and recycles formula (3) and simulate, and is set at the condition that can penetrate directional light.In this simulation, can consider following situation as the condition that can penetrate substantially parallel light: when making the light shafts that penetrate from light supply apparatus 1 the perfect lens that does not have aberration, carry out optically focused, the minimum that becomes of the spot diameter at the focal point place.
In this variation, the depth of parallelism of the exciting light of transmission parallelization lens 44 is further improved.Therefore, adopted the equalization of the exciting light of the 1st lens arra 51 and light-gathering optics easily, made light-emitting component 80 luminous to saturated inhibition of light easily.
And, though in the light supply apparatus 1 of present embodiment, adopted swivel plate 81 as the substrate that is formed with luminescent coating 82, be not limited to this.For example, also can adopt the substrate that can vibrate in the direction that the direction of carrying out incident with respect to exciting light intersects as the substrate that is formed with luminescent coating.
And, though in the light supply apparatus 1 of present embodiment, adopted the light-emitting component of rotary-type (mobile model) as light-emitting component 80, be not limited to this.For example, also can adopt the light-emitting component of fixed.
And, though in the light supply apparatus 1 of present embodiment, adopted each solid light source 13,23 and send the luminescent coating 82 of the fluorescence that comprises red light and green light from blue light that penetrates blue light as exciting light, be not limited to this.For example, also can adopt as exciting light and penetrate each solid light source of purple light or ultraviolet light and send the luminescent coating of the coloured light that comprises red light, green light and blue light from purple light or ultraviolet light.
And, though in the light supply apparatus 1 of present embodiment, constitute, penetrate white light as a whole, be not limited to this, also can constitute, penetrate white light light in addition.
And, in the light supply apparatus 1 of present embodiment, the angle that forms with the optical axis 10ax of non-focusing optical system 40 and the synthetic face of exciting light is the settings of 45 degree, make in the synthetic portion 30 of exciting light and from the 1st light source portion 10 the 1st exciting light that penetrates and the 2nd exciting light non-overlapping copies ground that penetrates from the 2nd light source portion 20 a plurality of the 1st solid light sources 13 and a plurality of the 2nd solid light source 23 to be disposed.Particularly, as can be seen from Figure 3, with a plurality of the 1st solid light sources 13 with respect to a plurality of the 2nd solid light source 23 relativities deviate from Z-direction and dispose.; the angle that forms at the optical axis 10ax of non-focusing optical system 40 and the synthetic face of exciting light is under the situations of 45 degree; even under situation about a plurality of the 1st solid light sources 13 and a plurality of the 2nd solid light source 23 being configured in the mode that overlaps each other at the 1st exciting light and the 2nd exciting light in the synthetic portion 30 of exciting light; the angle of the synthetic face of the optical axis 10ax by making non-focusing optical system 40 and exciting light departs from from the 45 degree, also can make the 1st exciting light and the 2nd excitation light energy non-overlapping copies in the synthetic portion 30 of exciting light.
And, though in the light supply apparatus 1 of present embodiment, adopted each solid light source that comprises semiconductor laser, be not limited to this.For example, also can adopt each solid light source that comprises light emitting diode.
And, though in the light supply apparatus 1 of present embodiment, adopted to comprise that the peak value that penetrates luminous intensity is about each solid light source of semiconductor laser of the blue light of 460nm, is not limited to this.For example, also can adopt and comprise that the peak value that penetrates luminous intensity is each solid light source of semiconductor laser of the blue light of 440nm ~ 450nm.Constitute by becoming so, in luminescent coating, can make the efficient raising of sending fluorescence from blue light.
And though in the light supply apparatus 1 of present embodiment, the irradiation area 80a that has enumerated the exciting light in the luminescent coating 82 is that a limit is the foursquare example of 1mm, is not limited to this.Because so long as the irradiation area that to be included in a limit be the foursquare size of 1mm gets final product, so as irradiation area, also can be the irradiation area of littler (for example, square and/or square that the limit is 0.6mm that the limit is 0.8mm).Constitute by becoming so, can make the area of the irradiation area that sends fluorescence more fully little.
And, though in the projector 1000 of present embodiment, adopted liquid crystal light-modulating device processed as optic modulating device, be not to be defined in this.As optic modulating device, as long as corresponding to image information incident light is modulated, also can adopt micro mirror type optic modulating device etc.As the micro mirror type optic modulating device, for example, can adopt the DMD(Digital Micromirror Device) (trade mark of TI company).
And, though in the projector 1000 of present embodiment, adopted 3 liquid crystal light-modulating devices processed as liquid crystal light-modulating device processed, be not limited to this.1, the projector of the liquid crystal light-modulating device processed more than 2 or 4 also can be applied to adopt.
And though in the projector 1000 of present embodiment, the projector that has adopted transmission-type is not limited to this.For example, also can adopt the projector of reflection-type.At this, so-called " transmission-type " refer to, as the liquid crystal indicator of transmission-type etc. as the optic modulating device of light-modulating cell for making light transmissive type.So-called " reflection-type " refer to, as the type of optic modulating device for light is reflected as light-modulating cell such as the liquid crystal indicator of reflection-type.Under the situation of the projector that the utility model is applied to reflection-type, also can play the effect same with the projector of transmission-type.
The 2nd embodiment
Fig. 9 is the synoptic diagram of the light supply apparatus 2 that relates to of expression the 2nd embodiment of the present utility model.
As be shown in Fig. 9 ground, the light supply apparatus 2 that present embodiment relates to possess replacing the 1st light source portion 10 the 1st light source portion 10A point, replace the synthetic portion 30 of exciting light and to possess the point of the synthetic 30A of portion of exciting light different with the light supply apparatus 1 that described the 1st embodiment relates to.Because other points are identical with described formation, so at the additional prosign of the key element identical with Fig. 1, detailed explanation is omitted.Also have, in Fig. 9, the diagram of non-focusing optical system 40, lens integrator 50, dichronic mirror 60, overlapping optical system 70 and light-emitting component 80 is omitted.
As being shown in Fig. 9 ground, the 1st light source portion 10A has the 1st solid light source array 11A and the 1st collimator lens array 14A.The 2nd light source portion 20 has the 2nd solid light source array 21 and the 2nd collimator lens array 24.
Figure 10 is the front view of the solid light source array (the 1st solid light source array 11A, the 2nd solid light source array 21) that possesses of light supply apparatus 2.Figure 10 (a) is the front view of the 1st solid light source array 11A, and Figure 10 (b) is the front view of the 2nd solid light source array 21.
The 1st solid light source array 11A is as being shown in Figure 10 (a), has substrate 12A and penetrates 25 the 1st solid light source 13A of blue light as exciting light.In the 1st solid light source array 11A, 25 the 1st solid light source 13A are configured to the rectangular of 5 row, 5 row.
Also have, in light supply apparatus 2 of the present utility model, the number of the 1st solid light source 13A is not to be defined in 25, so long as get final product more than 2.
Substrate 12A has the function of carrying the 1st solid light source 13A.For example, substrate 12A has electric power is carried out the function of intermediary between two parties with respect to the supply of the 1st solid light source 13A and/or made the function etc. of the heat heat radiation that produces at the 1st solid light source 13A.
The 1st solid light source 13A comprises as the exciting light ejaculation blue light (peak value of luminous intensity: semiconductor laser about 460nm).This semiconductor laser has the light-emitting zone of rectangular shape, and constitutes as being shown in Figure 10 (a), and is bigger than the extended corner along the light of the long side direction of described light-emitting zone along the extended corner of the light of the short side direction of light-emitting zone.The size of the light-emitting zone in the semiconductor laser for example is, long limit is 8 μ m, and minor face is 2 μ m.
The 1st solid light source 13A ejaculation comprises the blue light with respect to the P polarized light of the plane of incidence of the synthetic 30A of portion of exciting light.Also have, because the exciting light from the 1st light source portion 10A is incident in the synthetic 30A of portion of exciting light as the exciting light that comprises the P polarized light, so penetrate as described the solid light source of the exciting light that comprises the P polarized light except adopting, also can adopt and penetrate solid light source and λ/2 plates that comprise with respect to the exciting light of the S polarized light of the plane of incidence of the synthetic 30A of portion of exciting light.
The 1st collimator lens array 14A arranges corresponding to a plurality of the 1st solid light source 13A, has 25 the 1st collimation lens 15A.Though omit the explanation of being undertaken by diagram, a plurality of the 1st collimation lens 15A are configured to the rectangular of 5 row, 5 row.Substantially parallelization of blue light that the 1st collimation lens 15A penetrates the 1st a solid light source 13A among a plurality of the 1st solid light source 13A.The 1st collimation lens 15A comprises plano-convex lens.
The 1st collimator lens array 14A is configured to, and the plane among a plurality of the 1st collimation lens 15A is towards the 1st solid light source array 11A side.Also have, the 1st collimator lens array 14A also can be configured to, and the convex surface among a plurality of the 1st collimation lens 15A is towards the 1st solid light source array 11A side.
The 2nd solid light source array 21 and the 2nd collimator lens array 24 as be shown in Fig. 9 and Figure 10 (b) because have the 2nd solid light source array 21 that relates to the 1st embodiment and the same formation of the 2nd collimator lens array 24, so the explanation of property is omitted in detail.
In the light supply apparatus 2 that present embodiment relates to, as be shown in Figure 10 (a) and Figure 10 (b), the light-emitting zone of the light-emitting zone of the 1st solid light source 13A and the 2nd solid light source 23 also have long side direction and the short side direction reciprocal relation that becomes separately.In more detail, when with the light-emitting zone projection of the 1st solid light source 13A during in the synthetic 30A of portion of exciting light, the long side direction of light-emitting zone is Z-direction, and the short side direction of light-emitting zone is Y direction.On the other hand, when with the light-emitting zone projection of the 2nd solid light source 23 during in the synthetic 30A of portion of exciting light, the long side direction of light-emitting zone is Y direction, and the short side direction of light-emitting zone is Z-direction.So, with the light-emitting zone projection of the 1st solid light source 13A when the synthetic 30A of portion of exciting light shape and the light-emitting zone projection of the 2nd solid light source 23 shape when the synthetic 30A of portion of exciting light had long side direction and the short side direction reciprocal relation that becomes separately.
On the other hand, the 1st light source portion 10A and the 2nd light source portion 20 as be configured to with being shown in Fig. 9, Figure 10 (a), Figure 10 (b) and Figure 11, in the plane of the optical axis of the blue light that synthesizes perpendicular to the synthetic 30A of portion by exciting light described later from the blue light (the 1st exciting light) of the 1st light source portion 10A and overlap mutually from the blue light (the 2nd exciting light) of the 2nd light source portion 20.
The synthetic 30A of portion of the exciting light that present embodiment relates to has a plurality of structures 31.A structure 31 among a plurality of structures 31 possesses the polarization separating film 32 that is folded between the 1st transparent component 33 and the 2nd transparent component 34.The formation material of the 1st transparent component 33, the 2nd transparent component 34 for example adopts glass.The synthetic 30A of portion of exciting light is that a plurality of structures 31 of rectangle under XZ overlooks are along the light beam compositor of the so-called cubic type of polarization separating film 32 permutation and combination.
The 1st exciting light that the synthetic 30A of portion of exciting light penetrates from the 1st light source portion 10A in polarization separating film 32 carries out light incident side the 1st transparent component 33 is set, and the 2nd exciting light that penetrates from the 2nd light source portion 20 in polarization separating film 32 carries out light incident side the 2nd transparent component 34 is set.It is down triangle (being the right angled isosceles triangle shape at this) that the 1st transparent component 33 and the 2nd transparent component 34 are overlooked at XZ, is the shape of line symmetry centered by polarization separating film 32.The 1st transparent component 33 and the 2nd transparent component 34 are configured to, and the base clamping polarization separating film 32 of right angled isosceles triangle is opposed under XZ overlooks.
So, the synthetic 30A of portion of the exciting light that present embodiment relates to is configured to, and the 2nd interface SF2 clamping polarization separating film 32 of the 1st interface SF1 of the 1st transparent component 33 and polarization separating film 32 and the 2nd transparent component 34 and polarization separating film 32 opposite one another and overlapping.
Figure 11 is the figure of the incident area of the incident area of the 1st exciting light among the synthetic 30A of portion of expression exciting light and the 2nd exciting light.In Figure 11, the part of surrounding with solid line is the incident area of the 1st exciting light, is the incident area of the 2nd exciting light with the part of dotted line.
As be shown in Fig. 9 and Figure 11 ground, and the incident area of the 1st exciting light is distributed as the rectangular of 5 row, 5 row, and the incident area of the 2nd exciting light is distributed as the rectangular of 5 row, 5 row.And constitute, the optical axis of the 1st exciting light that penetrates from the 1st light source portion 10A synthesizes the 30A of portion at exciting light with the optical axis of the 2nd exciting light that penetrates from the 2nd light source portion 20 and intersects mutually.Therefore, in the synthetic 30A of portion of exciting light, the 1st exciting light and the 2nd exciting light are overlapping.Its result obtains the rectangular intensity distributions that 5 row 5 are listed as.
According to the light supply apparatus 2 of present embodiment, the 1st exciting light Jie who penetrates from the 1st light source portion 10A is incident in polarization separating film 32 by the 1st transparent component 33, and the 2nd exciting light Jie who penetrates from the 2nd light source portion 20 is incident in polarization separating film 32 by the 2nd transparent component 34.Therefore, even under the situation that refringence is big between polarization separating film 32 and the air layer (from the exciting light of 2 light source portion up to being incident in the medium that passes through till the polarization separating film 32), also can alleviate described refringence.Thereby, with be not the 1st transparent component 33 that relates to of the utility model and the 2nd transparent component 34 situation that is disposed at polarization separating film 32 but compare from the formation that the exciting light of 2 light source portion directly is incident in polarization separating film 32, can the loss that produce light owing to described refringence greatly be suppressed.
And,, be configured to the 1st interface SF1 and the 2nd interface SF2 clamping polarization separating film 32 and opposite one another and overlapping according to this formation.Therefore, in the synthetic 30A of portion of each the comfortable exciting light that constitutes the 1st exciting light and the 2nd exciting light, be incident under the situation in clamping polarization separating film 32 zone opposite one another, alleviate described refringence easily by the 1st transparent component 33 and the 2nd transparent component 34.Thereby, can the loss that produce light owing to described refringence greatly be suppressed.
The 3rd embodiment
Figure 12 is the synoptic diagram of the light supply apparatus 3 that relates to of expression the 3rd embodiment of the present utility model.
As being shown in Figure 12 ground, the light supply apparatus 3 that present embodiment relates to possesses the point of the synthetic 30B of portion of exciting light replacing the synthetic portion 30 of exciting light different with the light supply apparatus 1 that described the 1st embodiment relates to.Because other points are identical with described formation, so at the additional prosign of the key element identical with Fig. 1, detailed explanation is omitted.Also have, in Figure 12, the diagram of non-focusing optical system 40, lens integrator 50, dichronic mirror 60, overlapping optical system 70 and light-emitting component 80 is omitted.
As being shown in Figure 12 ground, the synthetic 30B of portion of the exciting light that present embodiment relates to constitutes, clamping polarization separating film 32B and the 1st transparent component 33B and the 2nd transparent component 34B are installed.The 1st transparent component 33B and the 2nd transparent component 34B for example are the triangular prism prism.The synthetic 30B of portion of exciting light is configured to, and a plurality of the 1st transparent component 33B and the 2nd transparent component 34 of triangle are arranged along polarization separating film 32B under XZ overlooks.
The synthetic 30B of portion of exciting light carries out light incident side at the 1st exciting light that penetrates from the 1st light source portion 10 the 1st transparent component 33B is set, and carries out light incident side at the 2nd exciting light that penetrates from the 2nd light source portion 20 the 2nd transparent component 34B is set.It is down triangle (being the right angled isosceles triangle shape at this) that the 1st transparent component 33B and the 2nd transparent component 34B overlook at XZ, is the shape of line symmetry centered by polarization separating film 32B.The 1st transparent component 33B and the 2nd transparent component 34B are configured to, and the base clamping polarization separating film 32 of right angled isosceles triangle is opposed under XZ overlooks.
So, the synthetic 30B of portion of the exciting light that present embodiment relates to is configured to, and the 2nd interface SF2 clamping polarization separating film 32B of the 1st interface SF1 of the 1st transparent component 33B and polarization separating film 32B and the 2nd transparent component 34B and polarization separating film 32B is partly overlapping.
At this, a plurality of the 1st transparent component 33B carry out light incident side with the 1st exciting light that predetermined spacing is arranged at polarization separating film 32B, and a plurality of the 2nd transparent component 34B carry out light incident side with the 2nd exciting light that predetermined spacing is arranged at polarization separating film 32B.And in the synthetic 30B of portion of the exciting light that present embodiment relates to, the 1st interface SF1 and the 2nd interface SF2 are configured to, and clamping polarization separating film 32B departs from half pitch mutually.
For example, in Figure 12, overlook down at XZ, the mid point of establishing the base of the 1st a transparent component 33B is CP1, and the mid point of establishing the base of the 2nd a transparent component 34B is CP2.Under this situation, the mid point CP2 on end of the 1st transparent component 33B and the base of the 2nd transparent component 34B is overlapping.And the mid point CP1 on end of the 2nd transparent component 34B and the base of the 1st transparent component 33B is overlapping.
Light supply apparatus 3 according to present embodiment is configured to, and it is overlapping that the 1st exciting light is incident among the zone of polarization separating film 32B and each comfortable polarization separating film 32B in zone that the 2nd exciting light is incident in polarization separating film 32B a part.Thereby, can be in synthetic exciting light, producing inhomogeneous the inhibition.
The 4th embodiment
Figure 13 is the synoptic diagram of the light supply apparatus 4 that relates to of expression the 4th embodiment of the present utility model.
As being shown in Figure 13 ground, the light supply apparatus 4 that present embodiment relates to possesses the point of the synthetic 30C of portion of exciting light replacing the synthetic 30A of portion of exciting light different with the light supply apparatus 2 that described the 2nd embodiment relates to.Because other points are identical with described formation, so at the additional prosign of the key element identical with Fig. 9, detailed explanation is omitted.
Though the synthetic 30A of portion of the exciting light that the 2nd embodiment relates to is for overlooking rectangular-shaped down a plurality of structures 31 along the light beam compositor of the so-called cubic type of polarization separating film 32 permutation and combination at XZ, the exciting light that present embodiment relates to synthesizes the really not so formation of the 30C of portion.
That is, the synthetic 30C of portion of the exciting light that present embodiment relates to is as constituting with being shown in Figure 13, clamping polarization separating film 32C and the 1st transparent component 33C and the 2nd transparent component 34C are installed.The 1st transparent component 33C and the 2nd transparent component 34C for example are the triangular prism prism.The synthetic 30C of portion of exciting light is configured to, and overlooking down at XZ, a plurality of the 1st transparent component 33C and a plurality of the 2nd transparent component 34C of triangle arrange along polarization separating film 32C.
The synthetic 30C of portion of the exciting light that present embodiment relates to is configured to, whole of the 1st interface SF1 of the 1st transparent component 33C and polarization separating film 32C with whole the clamping polarization separating film 32C of the 2nd interface SF2 of the 2nd transparent component 34C and polarization separating film 32C opposite one another and overlapping.
In the light supply apparatus 4 of present embodiment, in the synthetic 30C of portion of each the comfortable exciting light that constitutes the 1st exciting light and the 2nd exciting light, be incident under the situation in clamping polarization separating film 32C zone opposite one another, also alleviate described refringence easily with the 1st transparent component 33C and the 2nd transparent component 34C.Thereby, can the loss that produce light owing to described refringence greatly be suppressed.
The 5th embodiment
Figure 14 is the synoptic diagram of the light supply apparatus 5 that relates to of expression the 5th embodiment of the present utility model.
As being shown in Figure 14 ground, the light supply apparatus 5 that present embodiment relates to possesses the point of the synthetic 30D of portion of exciting light replacing the synthetic portion 30 of exciting light different with the light supply apparatus 1 that described the 1st embodiment relates to.Because other points are identical with described formation, so at the additional prosign of the key element identical with Fig. 1, detailed explanation is omitted.Also have, in Figure 14, the diagram of non-focusing optical system 40, lens integrator 50, dichronic mirror 60, overlapping optical system 70 and light-emitting component 80 is omitted.
Figure 15 is the synoptic diagram of the synthetic 30D of portion of the exciting light that relates to of present embodiment.Figure 15 (a) is the stereographic map of the synthetic 30D of portion of exciting light, and Figure 15 (b) is the figure that sees the synthetic 30D of portion of exciting light from the 1st light source portion 10 sides.
As being shown in Figure 15 (a), Figure 15 (b), the synthetic 30D of portion of the exciting light that present embodiment relates to has the reflector space AR2 that passes through regional AR1 and a plurality of the 2nd exciting lights are reflected that a plurality of the 1st exciting lights are passed through.The regional AR1 that passes through among the synthetic 30D of portion of exciting light comprises a plurality of peristome 32Da that are arranged at polarization separating film 32D.A peristome 32Da is seen as rectangular-shaped from the 1st light source portion 10 sides.A plurality of peristome 32Da arrange corresponding to a plurality of the 1st solid light sources 13, are configured to the rectangular of 5 row, 4 row.The size of peristome 32Da is, the size that at least a portion among the light shafts of the 1st exciting light that penetrates from the 1st solid light source 13 can be passed through.
According to the light supply apparatus 5 of present embodiment, because can the loss of the light that produces owing to the 1st exciting light transmission-polarizing diffusion barrier 32D be suppressed, so can synthesize with high efficient a plurality of the 1st exciting lights and a plurality of the 2nd exciting light.
Preferably: the optical axis of the 1st exciting light that penetrates from the 1st solid light source 13 is by peristome 32Da.This is because the intensity on the optical axis is the strongest among the light beam of exciting light.And preferred: the size of peristome 32Da is, the size that the light beam of the 1st exciting light that penetrates from the 1st solid light source 13 is all passed through; Reflector space AR2 can all reflect the light beam of a plurality of the 2nd exciting lights.Constituting according to this, is minimum because can make the loss of the light that produces owing to the 1st exciting light transmission-polarizing diffusion barrier 32D, so can synthesize with higher efficient a plurality of the 1st exciting lights and a plurality of the 2nd exciting light.
Also have, though in the light supply apparatus 5 of present embodiment, the example that constitutes that regional AR1 has peristome 32Da of passing through of lifting at polarization separating film 32D as the synthetic 30D of portion of exciting light is illustrated, and is not limited to this.For example, as the synthetic portion of exciting light, also can adopt at the catoptron corresponding to the regional opening that passes through the zone.And, also can adopt the transparency carrier that is formed with the reflection horizon in the zone corresponding to reflector space.
But, if so constitute, then have following situation: the loss that is incident in generation light under the situation of the boundary member by zone and reflector space at exciting light.Thereby, even in order to be incident at exciting light by also will the loss of generation light being suppressed under the situation of zone and the boundary member of reflector space, as present embodiment ground, preferably constitute: pass through regional AR1 with the peristome 32Da that forms in polarization separating film 32D perforate.
The 6th embodiment
Figure 16 is the synoptic diagram of the projector 2000 that relates to of expression the 6th embodiment of the present utility model.
As be shown in Figure 16 ground, the projector 2000 that present embodiment relates to possesses lighting device 100E(and replaces light supply apparatus 1 and possess light supply apparatus 6 replacing lighting device 100) point different with the projector 1000 that described the 1st embodiment relates to.Because other points are identical with described formation, so at the additional prosign of the key element identical with Fig. 1, detailed explanation is omitted.
As being shown in Figure 16 ground, the light supply apparatus 6 of projector 2000 is identical with light supply apparatus 1 its component part that the 1st embodiment relates to.Difference is that the lens integrator is not used 1 the 1st lens arra 51 in pairs and only.In the present embodiment, overlapping optical system 70 works as light-gathering optics of the present utility model.
Figure 17 is the key diagram of the function of expression the 1st lens arra 51 and overlapping optical system 70.In Figure 17, in order to simplify, overlapping optical system 70 schematically is illustrated as 1 convex lens.There is not spherical aberration in overlapping optical system 70 or has reduced spherical aberration by correction.
Also have, in Figure 17, for convenience, the part corresponding to the irradiation area 80a of exciting light among the light-emitting component 80 only is shown.The irradiation area 80a of the exciting light in the luminescent coating 82 is for example for overlooking the basic square shape of 1mm * 1mm.
As be shown in Figure 17 (a), constitute in the optical system that constitutes comprising the 1st lens arra 51 and overlapping optical system 70, the exciting light (blue light B) that is incident in the 1st lens arra 51 is directional light, and the chief ray of the exciting light of transmission the 1st lens arra 51 and overlapping optical system 70 is by the focal point F 2 of overlapping optical system 70.If in other words, be that the optical system at two ends is set at the 1st lens arra 51 and overlapping optical system 70 then, object plane is infinity.That is, comprise the 1st lens arra 51 and overlapping optical system 70 and the optical system that constitutes is object side disposition far away.In optical system so, the exciting light of incident (blue light B) is incident in overlapping optical system 70 after transmission the 1st lens arra 51, the ejaculation pupil P of the fixed width that the exciting light that penetrates from overlapping optical system 70 relates to by overlapping optical system 70.
In so constituting, the size that numerical aperture NA and the focal length Lb of the width that penetrates pupil P by overlapping optical system 70 is defined as fixing.And the shape that penetrates pupil P is similar figures with the lenslet 51a that constitutes the 1st lens arra 51.That is, penetrate the width of pupil P and do not rely in the distance L a of overlapping optical system 70 and the 1st lens arra 51, total for fixing.For example, entrance pupil P is designed to the basic square shape of 1mm * 1mm.
Thereby, as be shown in Figure 17 (b), by the position in the focal point F 2 of overlapping optical system 70, the light-emitting component 80 of the size that configuration is identical with penetrating pupil, and will be set at infinity with the face of photoirradiated surface 80a conjugation, compare with the light supply apparatus 1 of the 1st embodiment, can reduce the use sheet number (the 2nd lens arra that need not be shown in Figure 1) of lens arra.Its result can make the light intensity equalization of exciting light with a small amount of number of components, and shine in light-emitting component 80.
According to the light supply apparatus 5 of present embodiment, because the exciting light that is divided into a plurality of light shafts with the 1st lens arra 51 is with overlapping optical system 70 optically focused, so the light intensity distributions equalization.In addition, as be shown among the ejaculation pupil P of Figure 17 (a) because not imaging of exciting light, so the picture of exciting light is fuzzy, make the light intensity equalization easily.Therefore, easily light quantity is controlled in order to avoid to produce light in light-emitting component 80 saturated.
And, according to this formation, the plan view shape that constitutes the photoirradiated surface 80a of the plan view shape of a plurality of lenslet 51a of the 1st lens arra 51 and light-emitting component 80 is similar figures, and the area of overlooking of the photoirradiated surface 80a of light-emitting component 80 equates substantially with the size of the ejaculation pupil P of integral optical system.Thus, exciting light is not shone lavishly in light-emitting component 80.Therefore, can make the fluorescence volume maximization of the taking-up relative with the excitation light quantity that drops into.
Also have, in the present embodiment, the area of overlooking of the photoirradiated surface 80a of light-emitting component 80 equates substantially with the size that penetrates pupil P., though even for example penetrating under the big situation of pupil P one side, also can waste a part of exciting light, because it is saturated to be suppressed at the light of light-emitting component 80, so can expect the improvement of luminescence efficiency.
And, in the present embodiment, though the focal point F 2 of photoirradiated surface 80a and overlapping optical system 70 is overlapping and dispose, even depart from from focal point F 2, also can expect the overlapping effect of the exciting light that caused by the 1st lens arra 51 by being situated between, there is the trend of equalization in the light intensity of exciting light.Therefore, can the light saturated phenomenon in the light-emitting component 80 be suppressed, and become the high light source of luminescence efficiency.
The 7th embodiment
Figure 18 is the synoptic diagram of the projector 3000 that relates to of expression the 7th embodiment of the present utility model.
As be shown in Figure 18 ground, the projector 3000 that present embodiment relates to possesses lighting device 100F(and replaces light supply apparatus 1 and possess light supply apparatus 7 replacing lighting device 100) point, replace look to separate leaded light optical system 200 and possess look to separate the point of leaded light optical system 202 different with the projector 1000 that described the 1st embodiment relates to the point that further possesses the 2nd lighting device 700.Because other points are identical with described formation, so at the additional prosign of the key element identical with Fig. 1, detailed explanation is omitted.
Though in described the 1st embodiment, adopted a part among the blue light to send the light-emitting component 80 of the fluorescence that comprises red light and green light, the utility model is not limited thereto.The light supply apparatus 7 that present embodiment relates to comprises the whole light-emitting component 80F that send fluorescence (red light and green light) from blue light.And the light-emitting component 80F that present embodiment relates to is from carrying out the light-emitting component that the light incident side opposition side sends the so-called transmission-type of fluorescence with exciting light.And light-emitting component 80F is the light-emitting component of fixed.And projector 3000 further possesses the 2nd lighting device 700 that penetrates blue light.The blue light light source portion is with symbol 720 expression, has the formation same with the 2nd light source portion 20.Make the diffuse optical system of blue light substantially parallelization after optically focused, scattering with symbol 730 expressions.Blue light generating unit 720 and diffuse optical system 730 constitute the 2nd light supply apparatus 710.With the 1st lens arra of symbol 740 expression and the 1st lens arra 120, with the 2nd lens arra and the 2nd lens arra 130 of symbol 750 expressions, the polarization conversion device of representing with symbol 760 and polarization conversion device 140 and overlapping lens and the overlapping lens 150 represented with symbol 770 have same formation respectively.And projector 3000 possesses lighting device 100F and separates leaded light optical system 202 corresponding to the look of the 2nd lighting device 700.
In the projector 3000 of present embodiment, because have described light supply apparatus 7, so the projector 3000 that the brightness that also can provide the utilization ratio that can not make light can make display frame further improves with reducing.
The utility model is being applied to from watching the projected image side to carry out under the situation of front projection type projector of projection, be applied to from carrying out can both using under the situation of back projection type projector of projection with watching projected image side opposition side.
Though in described each embodiment, be illustrated about the example that light supply apparatus of the present utility model is applied to projector, be not limited to this.For example, also light supply apparatus of the present utility model can be applied to other optical device (for example, the headlight of optical disc apparatus, automobile, light fixture etc.).

Claims (19)

1. a light supply apparatus is characterized in that, comprising:
The 1st light source portion, it comprises a plurality of the 1st solid light sources that penetrate the 1st exciting light;
The 2nd light source portion, it comprises a plurality of the 2nd solid light sources that penetrate the 2nd exciting light;
Exciting light synthesizes portion, and it synthesizes a plurality of described the 1st exciting light that penetrates from described the 1st light source portion and a plurality of described the 2nd exciting light that penetrates from described the 2nd light source portion, and penetrates as synthetic exciting light;
Lens arra, it will be divided into a plurality of sub-light shafts from the described synthetic exciting light that the synthetic portion of described exciting light penetrates;
Light-gathering optics, it makes described a plurality of sub-light shafts carry out optically focused; With
Light-emitting component, it sends fluorescence by the described a plurality of sub-light shafts excitation with described light-gathering optics optically focused.
2. light supply apparatus according to claim 1 is characterized in that, constitutes:
The synthetic portion of described exciting light has to be made as the light transmission of P polarized light incident and the polarization separating film that the light as the incident of S polarized light is reflected;
Described a plurality of described the 1st exciting light is incident in the synthetic portion of described exciting light as the P polarized light, and described a plurality of the 2nd exciting lights are incident in the synthetic portion of described exciting light as the S polarized light.
3. light supply apparatus according to claim 2 is characterized in that:
The synthetic portion of described exciting light further possesses the 1st transparent component and the 2nd transparent component that the described polarization separating film of clamping ground arranges;
The 1st exciting light among described a plurality of the 1st exciting light is situated between and is incident in described polarization separating film by described the 1st transparent component;
The 2nd exciting light among described a plurality of the 2nd exciting light is situated between and is incident in described polarization separating film by described the 2nd transparent component.
4. light supply apparatus according to claim 3 is characterized in that:
The synthetic portion of described exciting light is configured to, and the described polarization separating film of interface clamping between the interface between described the 1st transparent component and the described polarization separating film and described the 2nd transparent component and the described polarization separating film overlaps each other.
5. light supply apparatus according to claim 3 is characterized in that:
The synthetic portion of described exciting light is configured to, and the described polarization separating film of interface clamping between the interface between described the 1st transparent component and the described polarization separating film and described the 2nd transparent component and the described polarization separating film is partly overlapping mutually.
6. light supply apparatus according to claim 1 is characterized in that:
The synthetic portion of described exciting light has the reflector space that passes through the zone and described a plurality of the 2nd exciting light is reflected that described a plurality of the 1st exciting light is passed through.
7. according to each described light supply apparatus in the claim 1~6, it is characterized in that:
Described a plurality of the 1st solid light source and described a plurality of the 2nd solid light source comprise semiconductor laser respectively;
Described semiconductor laser constitutes, and has the light-emitting zone of the rectangular shape of overlooking, and is bigger than the extended corner along the light of the long side direction of described light-emitting zone along the extended corner of the light of the short side direction of described light-emitting zone;
The long side direction of the light-emitting zone projection of the 1st solid light source among described a plurality of the 1st solid light sources shape when the synthetic portion of described exciting light and short side direction and long side direction and short side direction with the shape of light-emitting zone projection when described exciting light synthesizes portion of the 2nd solid light source among described a plurality of the 2nd solid light sources had reciprocal relation respectively.
8. light supply apparatus according to claim 7 is characterized in that:
Described a plurality of the 1st solid light source is arranged as array-like;
Described the 1st light source portion possesses the 1st collimator lens array, and the 1st collimator lens array has a plurality of the 1st collimation lenses that arrange corresponding to described a plurality of the 1st solid light sources;
The 1st exciting light parallelization that the 1st collimation lens among described a plurality of the 1st collimation lens penetrates the 1st solid light source among described a plurality of the 1st solid light sources;
Described a plurality of the 2nd solid light source is arranged as array-like;
Described the 2nd light source portion possesses the 2nd collimator lens array, and the 2nd collimator lens array has a plurality of the 2nd collimation lenses that arrange corresponding to described a plurality of the 2nd solid light sources;
The 2nd exciting light parallelization that the 2nd collimation lens among described a plurality of the 2nd collimation lens penetrates the 2nd solid light source among described a plurality of the 2nd solid light sources.
9. light supply apparatus according to claim 8 is characterized in that:
Described a plurality of the 1st solid light source is configured to rectangular, and makes that the long side direction of described a plurality of the 1st solid light sources light-emitting zone separately is parallel with the 1st direction;
Described a plurality of the 1st collimation lens is configured to rectangular corresponding to the configuration of described a plurality of the 1st solid light sources;
The spacing of the direction of intersecting with described the 1st direction of described a plurality of the 1st collimation lenses of gap ratio of described the 1st direction of described a plurality of the 1st collimation lenses will be lacked;
Described a plurality of the 2nd solid light source is configured to rectangular, and makes that the long side direction of described a plurality of the 2nd solid light sources light-emitting zone separately is parallel with the 2nd direction;
Described a plurality of the 2nd collimation lens is configured to rectangular corresponding to the configuration of described a plurality of the 2nd solid light sources;
The spacing of the direction of intersecting with described the 2nd direction of described a plurality of the 2nd collimation lenses of gap ratio of described the 2nd direction of described a plurality of the 2nd collimation lenses will be lacked.
10. according to each described light supply apparatus in the claim 1~6, it is characterized in that:
Described light-gathering optics has and carries out the 2nd lens arra of incident with paired, the described sub-light shafts of described lens arra and make the described sub-light shafts that penetrate from described the 2nd lens arra overlapping overlapping optical system on described light-emitting component;
The lens face of described lens arra and the photoirradiated surface of described light-emitting component are situated between and are in conjugate relation by described light-gathering optics.
11. light supply apparatus according to claim 10 is characterized in that:
Constituting the plan view shape of a plurality of lenslets of described lens arra and the plan view shape of described photoirradiated surface is similar figures;
The light intensity distributions of shining the described exciting light of described photoirradiated surface becomes in the locus place light intensity continuous light intensity distributions identical with described photoirradiated surface.
12. according to each described light supply apparatus in the claim 1~6, it is characterized in that:
Described light-emitting component is set to, and photoirradiated surface is overlapped in the focal position of described light-gathering optics;
Be that the integral optical system at two ends is set at described lens arra and described light-gathering optics, with the face of described photoirradiated surface conjugation be infinity.
13. light supply apparatus according to claim 12 is characterized in that,
The plan view shape that constitutes the photoirradiated surface of the plan view shape of a plurality of lenslets of described lens arra and described light-emitting component is similar figures;
The area of overlooking of the photoirradiated surface of described light-emitting component equates substantially with the size of the ejaculation pupil of described integral optical system.
14. light supply apparatus according to claim 10 is characterized in that:
Have the described synthetic exciting light that penetrates from the synthetic portion of described exciting light is carried out the collector lens of optically focused and the parallelization lens that the described synthetic exciting light that penetrates from described collector lens is carried out parallelization;
Described parallelization lens have the concave surface of rotary secondary surface shape the either party of the plane of incidence or outgoing plane.
15. light supply apparatus according to claim 14 is characterized in that:
In the described parallelization lens, the described plane of incidence is that described concave surface, described outgoing plane are the plane.
16. light supply apparatus according to claim 14 is characterized in that:
In the described parallelization lens, the described plane of incidence is that the convex surface of dome shape, described outgoing plane are described concave surface.
17. light supply apparatus according to claim 14 is characterized in that:
Described concave surface, to establish intersection point with the central shaft of described concave surface and described light shafts be initial point, be the Z axle with described central shaft, be that coordinate figure in the r θ Z cylindrical-coordinate system of r axle is r and Z and to establish paraxial curvature be c, establish the constant of the cone when being K with the axle with described orthogonality of center shaft, be the shape of representing by following formula:
(formula 1)
18. according to each described light supply apparatus in the claim 1~6, it is characterized in that, constitute:
The 1st exciting light among described a plurality of the 1st exciting light is incident in the regional different zone of carrying out incident with described a plurality of the 2nd exciting lights in the synthetic portion of described exciting light.
19. a projector is characterized in that:
The optical modulation element that possesses each described light supply apparatus in the claim 1~18, the light that penetrates from described light supply apparatus is modulated and the projection optical system that the light by described optical modulation element modulation is carried out projection.
CN 201220632051 2011-11-30 2012-11-26 Light source device and projector CN203232239U (en)

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