CN208834084U - Light supply apparatus, projector - Google Patents
Light supply apparatus, projector Download PDFInfo
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- CN208834084U CN208834084U CN201821586056.XU CN201821586056U CN208834084U CN 208834084 U CN208834084 U CN 208834084U CN 201821586056 U CN201821586056 U CN 201821586056U CN 208834084 U CN208834084 U CN 208834084U
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- light
- mentioned
- shafts
- semiconductor laser
- light shafts
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Lenses (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Light supply apparatus and projector inhibit the expansion of unit scale using multiple semiconductor laser chips and improve light output.Light supply apparatus has: multiple semiconductor laser elements, multiple light emissions including being arranged on identical or different semiconductor laser chip go out region and go out multiple first light shafts that region is projected from adjacent multiple light emissions by incidence, and are transformed to multiple second light shafts of substantially parallel light shafts and the first refractive optical system that projects；And second dioptric system, include multiple flat surfaces with different inclinations angle or multiple convex surfaces outstanding based on each flat surface of multiple flat surfaces, the multiple respective at least part of second light shafts projected from identical semiconductor laser element are incident on different flat surfaces or different convex surfaces, the direction of travel of multiple second light shafts is converted and projected in a manner of reducing the mutual standoff distance of each chief ray, is accordingly configured with the quantity of semiconductor laser element.
Description
Technical field
The utility model relates to light supply apparatus, in particular to utilize the light source dress of the light projected from semiconductor laser chip
It sets.In addition, the utility model relates to have the projector of such light supply apparatus.
Background technique
It is being promoted as the light source for projector using the technology of semiconductor laser chip.In recent years, from city
Semiconductor laser chip is used as light source like this and further improves the light supply apparatus of light output by field.
In order to improve the light output of light source side, it may be considered that light will be projected from multiple semiconductor laser chips and carry out optically focused
Method.But there are certain width for semiconductor laser chip, they are configured with touching and is limited.That is,
Multiple semiconductor laser chips are only configured, will lead to light supply apparatus enlargement.
From this viewpoint, there are following technologies: for example following patent documents 1 like that, configure semiconductor in first area
Chip of laser group configures other semiconductor laser chip groups in the second area different from first area, using by gap
The combination mechanism that mirror is constituted synthesizes the light projected from two semiconductor laser chipsets.In this way, with only existing
The case where same position arrangement multiple semiconductor laser chips, is compared, and can reduce configuration area and improve luminous intensity.
Existing technical literature
Patent document
1 Japanese Unexamined Patent Publication 2017-215570 bulletin of patent document
In addition, the method as the luminous intensity for improving light source side, it may be considered that use the areas for being provided with multiple injection laser
The method of the semiconductor laser chip in domain (light emission goes out region: hereinafter sometimes referred to " emitter ").Such semiconductor laser
Device chip is sometimes referred to as " multi-emitting figure ".The present application people have studied by by the semiconductor laser of multi-emitting figure
Device chip is used in light source come the case where improving luminous intensity, there are projects as follows for discovery.
Figure 1A is the perspective view for showing schematically the construction for the semiconductor laser chip for having an emitter.It is such
Semiconductor laser chip is sometimes referred to as " single-shot beam type ".It is projected in addition, also being schematically shown in Figure 1A from emitter
Light (laser) light shafts.In addition, in the present specification, the light group for being formed as pencil that will be projected from single emitter
Referred to as " light shafts ".
It is known in the case where so-called " end face light emitting-type " semiconductor laser chip 100 as shown in Figure 1A, from hair
The light shafts 101L that beam 101 projects presents oval tapered.It in the present specification, will be with optical axis (Z-direction shown in figure 1A) just
The big direction (Y-direction shown in figure 1A) of among 2 directions (X-direction and Y-direction) handed over, light shafts 101L angle of divergence claims
For " fast axis direction ", the small direction of the angle of divergence of light shafts 101L (X-direction shown in figure 1A) is known as " slow-axis direction ".
Figure 1B be divided into light shafts 101L the case where from X-direction and the case where from Y-direction and schematic map
The figure shown.As shown in Figure 1B, for fast axis direction, the angle of divergence θ of light shafts 101LyGreatly, for slow-axis direction, light shafts 101L
Angle of divergence θxIt is small.
In addition, in each figure below, for convenience of description, sometimes by the angle of divergence of light shafts than practical exaggeration map
Show.
In the light (light that configures multiple semiconductor laser chips 100 and will be projected from each semiconductor laser chip 100
Beam 101L) carry out optically focused and in the case where utilizing, from the viewpoint of the size for inhibiting optical component, usually by each light shafts
101L is photochemical in parallel to carry out optically focused by lens later.Specifically, the rear class in semiconductor laser chip 100 configures collimation
Lens (also referred to " collimation lens "), to reduce the angle of divergence of each light shafts 101L.
Fig. 2A be schematically illustrated at semiconductor laser chip 100 rear class be configured with collimation lens 102 in the case where
The figure for the light shafts advanced on YZ in-plane.In addition, depicting only the glazed thread and lower light in geometric optics in Fig. 2A
Line.
In addition, in the present specification, " glazed thread " refers to light among light shafts, passing through optical component (such as lens)
Enclose (entrance pupil) upper limb light, " lower light " refer to it is among light shafts, pass through said aperture (entrance pupil) under
The light of edge.In addition, the light at the center across said aperture (entrance pupil) among light shafts is known as " key light below
Line ".That is the chief ray light that is the center across the glazed thread of light shafts and lower light.
A according to fig. 2, light shafts 101L become essence after passing through collimation lens 102, about fast axis direction (Y-direction)
On directional light harness (hereinafter referred to as " substantially parallel light shafts ".).In addition, in the present specification, " substantial directional light
Harness " or " substantially parallel light shafts " refer to glazed thread and lower light shafts of the light angulation less than 2 °.
Fig. 2 B is to be schematically illustrated at the rear class of semiconductor laser chip 100 to be configured in the case of collimation lens 102
The figure for the light shafts advanced on XZ in-plane.B according to fig. 2, light shafts 101L are after passing through collimation lens 102 about slow axis
Direction (X-direction) also becomes substantially parallel light shafts.
Fig. 3 A be show schematically the semiconductor laser chip for having multiple emitters with Figure 1A difference construction it is vertical
Body figure.In Fig. 3 A, shows semiconductor laser chip 110 and have the case where two emitters (111,112).
Fig. 3 B be it is similar with Figure 1B, being divided into will be from the light shafts (111L, 112L) that each emitter (111,112) projects from X
The case where direction is observed and the figure schematically illustrated the case where from Y-direction.Each emitter (111,112) is about Y-direction
It is formed in same coordinate position, therefore light shafts (111L, 112L) are completely overlapped when from X-direction.On the other hand, each hair
Beam (111,112) is formed in different coordinate positions about X-direction, thus when from Y-direction light shafts (111L,
112L) it is shown in such a way that respective positions deviate.
It studies the rear class of the semiconductor laser chip 110 illustrated in figure 3 a, configure standard in the same manner as Fig. 2A and Fig. 2 B
The form of light shafts in the case where straight lens 102.As described referring to Fig. 3 B, light shafts when from X-direction
(111L, 112L) is completely overlapped.Accordingly, with respect to fast axis direction (Y-direction), each light shafts (111L, 112L) are passing through collimation thoroughly
It is same as Fig. 2A to become substantially parallel light shafts after mirror 102.
Fig. 4 be schematically illustrated at semiconductor laser chip 110 rear class be configured in the case where collimation lens 102
The figure for the light shafts advanced on XZ in-plane.Semiconductor laser chip 110 has the multiple emitters separated in the X direction
(111,112), therefore the X of the center of the X-coordinate of the center of collimation lens 102 and each emitter (111,112) is sat
Mark is inevitably generated deviation.
As a result, the light shafts 111L projected from emitter 111 and the light shafts 112L projected from emitter 112 are dividing
Substantially parallel light shafts, but the chief ray 111Lm and light shafts 112L of light shafts 111L Chuan Guo not be become after collimation lens 102
Chief ray 112Lm it is not parallel.That is, light shafts 111L and light shafts 112L make the respective row in relation to X-direction respectively
Into direction difference.
In the case of such a construction, even if later being gathered each light shafts (111L, 112L) optically focused using condensing optical system
Light beam bundle after light can also be spread, and generation is not able to guide to the light in direction as a purpose.As a result, the utilization of light
Efficiency reduces.Especially utilize in the semiconductor laser chip 110 of the multiple multi-emitting figures of configuration from each semiconductor laser
In the case where the light that device chip 110 projects, the amount of unavailable light reaches the degree that cannot ignore.
After passing through collimation lens 102, the angle of the direction of travel of the related X-direction of light shafts 111L and light shafts 112L
Degree is determined by the distance between emitter (111,112) relative to the relative value of the focal length of collimation lens 102.In more detail
Say, set the distance from the optical axis of collimation lens 102 to the position of each emitter (111,112) farthest with above-mentioned optical axis be d,
When the focal length of collimation lens 102 is f, the angle of divergence θ of light shafts (111L, 112L) is by θ=tan-1(d/f) it provides.
Fig. 5 be schematically illustrated at using with collimating lens 102, compared with the structure of Fig. 4 by emitter (111,112)
Between distance (distance of X-direction) widened situation under, the figure of the light shafts advanced on XZ in-plane similar with Fig. 4.It changes
Yan Zhi, Fig. 5 correspond to compared with the structure of Fig. 4 make emitter (111,112) between at a distance from focus relative to collimation lens 102
The case where relative value of distance becomes larger.
As can be seen from FIG. 5, chief ray 111Lm and chief ray 112Lm angulation θxm(angle corresponds to collimation lens
2 times with each chief ray angulation of 102 optical axis) with Fig. 4 the case where compared with become larger.In this case, light shafts 111L
With light shafts 112L compared with the form of Fig. 4, about Z-direction with 102 closer proximity of collimation lens at be kept completely separate.Scheming
In 4 form, about optical axis direction (Z-direction), light shafts 111L and light shafts 112L is kept completely separate at the position of z1.Relatively
In this, in the form of Fig. 5, about optical axis direction (Z-direction), light shafts 111L and light at the position of z2 for leaning on prime than z1
Harness 112L is kept completely separate.
On the contrary, the distance between emitter (111,112) is that can fill relative to the focal length of collimation lens 102
In the case where the size for dividing the degree ignored, about X-direction, the master of the chief ray 111Lm and light shafts 112L of light shafts 111L
Light 112Lm angulation is also substantially close to 0 °, will not there is a situation where such as each light shafts (111L, 112L) separation.
But the lens for making collimation lens 102 with sufficiently long focal length are needed thus, cause the size of optical system to expand
Greatly.
Especially in the case where configuring semiconductor laser chip 110 of multiple multi-emitting figures, need to lead with fifty-fifty
Body laser chip 110 accordingly configures collimation lens 102, therefore unit scale becomes extremely big.
The above subject in the semiconductor laser chip 100 of single-shot beam type it can also happen that.That is, the above subject is such as
Generation is equally possible in lower situation: in order to make the output of semiconductor laser chip 100 rise and make the width of emitter 101
The case where broadening, the semiconductor laser chip 100 for configuring multiple single-shot beam types simultaneously make from multiple semiconductor laser chips
100 light shafts projected the situation incident to a collimation lens 102.
Utility model content
The utility model is in view of the above subject, and it is an object of the present invention to provide inhibiting device using multiple semiconductor laser chips
The expansion of scale and the light supply apparatus for improving light output.In addition, the purpose of this utility model is to provide have light source dress
The projector set.
The light supply apparatus of the utility model is characterized in that having: multiple semiconductor laser elements, including multiple light emissions
Region and first refractive optical system out, above-mentioned multiple light emissions go out region and identical or different semiconductor laser chip are arranged in
On, above-mentioned first refractive optical system goes out multiple first light shafts that region is projected from adjacent multiple above-mentioned light emissions by incidence,
Above-mentioned multiple first light shafts are transformed to multiple second light shafts as substantially parallel light shafts respectively and are projected；And the
Two dioptric systems, comprising multiple flat surfaces with different inclinations angle or with each flat surface of above-mentioned multiple flat surfaces
Based on multiple convex surfaces outstanding, multiple above-mentioned second light shafts projected from identical above-mentioned semiconductor laser element are each
From at least part be incident on different above-mentioned flat surfaces or different above-mentioned convex surfaces, to reduce multiple above-mentioned second light
The mode of the mutual standoff distance of the respective chief ray of beam is converted and is penetrated to the direction of travel of multiple above-mentioned second light shafts
Out；Above-mentioned second dioptric system is accordingly configured with the quantity of above-mentioned semiconductor laser element.
As described referring to Fig. 3 A~Fig. 5, match in the rear class of the semiconductor laser chip 110 of multi-emitting figure
In the case where having set collimation lens 102, about fast axis direction (Y-direction), each light shafts (111L, 112L) become roughly parallel light
Harness, but about slow-axis direction (X-direction), the direction of travel of each light shafts (111L, 112L) is different.In this condition, if
Configure multiple semiconductor laser chips 110 and multiple collimation lenses 102 in order to improve brightness as shown in Figure 6, and will be from each
The light shafts that collimation lens 102 projects carry out optically focused using collector lens 120, then the light shafts 111L projected from emitter 111
Chief ray 111Lm it is different from the direction of travel of chief ray 112Lm of light shafts 112L projected from emitter 112, as a result lead
It causes to be imaged in multiple positions (131,132).
In form shown in Fig. 6, considering to be utilized in the optical system of rear class by the light of 120 optically focused of collector lens
In the case where, need to configure with comprising phase from each imaging position (131,132) the roomy plane of incidence optical system, lead
Cause the reduction of the brightness on the plane of incidence and the expansion of unit scale.
In contrast, light supply apparatus according to the present utility model, can make to project from identical semiconductor laser element
Chief ray be condensed to roughly the same position each other, realize the utilization efficiency of light and/or the raising of brightness.More particularly
It is as follows.
If multiple first light shafts are incident on first refractive optical system, multiple first light shafts are transformed to make respectively
For multiple second light shafts of substantially parallel light shafts.But each second light shafts each other, more particularly each second light shafts
Chief ray there is angle corresponding with the mutual interval of the chief ray of the first light shafts each other and advance.The master of first light shafts
The mutual interval of light goes out the mutual interval in center in region dependent on the light emission for projecting each first light shafts.
Above-mentioned light supply apparatus has the second dioptric system in the rear class of first refractive optical system, the second refraction light
System includes to have multiple flat surfaces at different inclinations angle or using each flat surface in above-mentioned multiple flat surfaces as base
Plinth and multiple convex surfaces outstanding.Here, " inclination angle " is also possible to the angle relative to optical axis.More particularly, " inclination
Angle " be also possible to by the second dioptric system from optical axis direction (such as Z-direction in aftermentioned Fig. 7) and multiple light emissions
The orthogonal defined first direction of the adjacent direction in region (such as X-direction in aftermentioned Fig. 7) both sides (such as aftermentioned figure out
Y-direction in 7) observation when angle of each flat surface relative to optical axis.That is, if can be referring to the coordinate system in Fig. 7
The angle relative to Z axis in XZ plane.
The second dioptric system have it is above-mentioned " with different inclinations angle multiple flat surfaces " in the case where, from
When above-mentioned first direction (such as Y-direction in aftermentioned Fig. 7) observes the second dioptric system, confirm with different
The broken line at inclination angle or multiple line segments.More particularly, when the second dioptric system have in single part it is multiple flat
Above-mentioned broken line is confirmed in the case where face.In addition, when the second dioptric system is divided into multiple components and each portion
In the case that part has the flat surface with different inclinations angle, above-mentioned multiple line segments are confirmed.
In addition, alternatively, when the second dioptric system have it is above-mentioned " with the multiple of different inclinations angle
In the case where multiple convex surfaces outstanding based on each flat surface of flat surface ", (such as aftermentioned from above-mentioned first direction
Fig. 7 in Y-direction) observation the second dioptric system when, distinguish and misknow above-mentioned broken line or multiple line segments, but confirm
By the song of the respective two endpoints connection of each line segment on the basis of imaginary broken line or multiple line segments with different inclinations angle
Line (such as circular arc or elliptic arc).
From same semiconductor laser element project, more particularly from same first refractive optical system project it is more
A respective at least part of second light shafts enters to the different flat surface of the second dioptric system or different convex surfaces
It penetrates.Also, correspond to the inclination angle for being formed in flat surface (or the flat surface on the basis as convex surface), multiple second light shafts
Refraction, change in travel direction.
Here, the inclination angle of each flat surface (or each flat surface on the basis as convex surface) of the second dioptric system
It is set to, so that the mutual standoff distance of incident multiple respective chief rays of second light shafts reduces.Preferably, respectively
The inclination angle of flat surface is set to, and is condensed to multiple respective chief rays of second light shafts more substantially.As a result, it is possible to
So that the chief ray projected from same above-mentioned semiconductor laser element is condensed to substantially same position each other, it can be achieved that light utilization
The raising of efficiency and/or brightness.
Above-mentioned light supply apparatus can also have it is multiple on same semiconductor laser chip have multiple light emissions go out region
The semiconductor laser chip of multi-emitting figure made of (so-called " emitter "), and can also have multiple in same half
Go out the semiconductor laser core of single-shot beam type made of region (emitter) on conductor laser chip with single light emission
Piece.
In above-mentioned light supply apparatus, being also possible to above-mentioned second dioptric system is comprising with different inclinations angle
Multiple above-mentioned flat surfaces in each above-mentioned flat surface based on to outstanding with above-mentioned first refractive optical system opposite side
The structure of multiple convex surfaces, the focal length of multiple above-mentioned convex surfaces are from the light emergence face side of above-mentioned second dioptric system
Position to the mutual intersection of multiple above-mentioned respective chief rays of second light shafts projected from above-mentioned second dioptric system
More than the distance until position, or from the position of the light emergence face side of above-mentioned second dioptric system to multiple above-mentioned
It is more than the distance until the mutual crossover sites of imaginary extended line of the respective chief ray of two light shafts.
Focal length d1 in multiple above-mentioned convex surfaces and the position from the light emergence face side of above-mentioned second dioptric system
Set the mutual crossover sites of multiple above-mentioned respective chief rays of second light shafts projected from above-mentioned second dioptric system,
Or the distance d2 until the mutual crossover sites of imaginary extended line of multiple above-mentioned respective chief rays of second light shafts is compared to real
In the case where extremely being grown in matter, it can make from the position through away from chief ray among the second light shafts that each convex surface projects
Light carried out substantially in parallel with above-mentioned each chief ray.
On the other hand, in the case where above-mentioned distance d1 and above-mentioned distance d2 are substantially equal, for from multiple convex surfaces
The light for the position through away from chief ray among the second light shafts projected can also swash to from same above-mentioned semiconductor
Substantially the same part guidance in the mutual optically focused position of chief ray that light device unit projects.That is, multiple second light
The whole light for including in beam are condensed to roughly the same position, therefore by configuring the plane of incidence of the optical system of rear class
At the position, the high light of brightness can be guided to the optical system of rear class.
In addition, set multiple convex surfaces focal length (in the case that the focal length of each convex surface is different as focus away from
From average value) be d1, if being penetrated from the position of the light emergence face side of the second dioptric system to from the second dioptric system
The vacation of the mutual crossover sites of multiple respective chief rays of second light shafts or multiple respective chief rays of second light shafts out
When the distance for thinking until the mutual crossover sites of extended line is d2, the value of d1 and d2 are substantially the same, can refer to | d1-d2 |/
d1≤0.1。
In above-mentioned light supply apparatus, being also possible to above-mentioned first refractive optical system in light emergence face side has song outstanding
Face, above-mentioned second dioptric system is relative to above-mentioned first refractive optical system configurations than above-mentioned first refractive optical system
Focal length further from position.
The chief ray of multiple second light shafts projected from first refractive optical system is each other in first refractive optical system
Focus position intersect.The width of the glazed thread of each second light shafts and lower light is substantially common, therefore first
On the position of the focus of dioptric system, each second light shafts are completely coincident each other.It were it not for the second refractive optics of configuration
System, then each second light shafts mutually have and diffusely go each other with the position of the focus far from first refractive optical system
Into.
In addition, being presented on the position intensity of light of chief ray most from the second light shafts that first refractive optical system projects
It is high, further away from chief ray then luminous intensity more sharply decline with light distribution, such as the such distribution of Gaussian Profile.
According to above structure, at least from first refractive optical system project multiple second light shafts chief ray respectively to
The different flat surfaces (or convex surface) of second dioptric system are incident.That is, the radiation among each second light shafts
The high light of illumination is transformed to substantially the same with chief ray after being incident on different flat surfaces (or convex surface)
Direction is advanced towards roughly the same position.As a result, the high light of the radiation illumination for including in multiple second light shafts is gathered
Light is to roughly the same position, can be by high brightness therefore by configuring the plane of incidence of the optical system of rear class at the position
Light be directed to the optical system of rear class.
In above-mentioned light supply apparatus, it is also possible to the configuration of above-mentioned second dioptric system in adjacent pair above-mentioned the
The lower light of above-mentioned second light shafts of the glazed thread and another party of above-mentioned second light shafts of a side among two light shafts is handed over
The specific position of fork, or than above-mentioned specific position further from the position of above-mentioned first refractive optical system.
On above-mentioned specific position, above-mentioned second light shafts of adjacent pair are separated completely each other.It were it not for configuration
Second dioptric system, then each second light shafts are each other as far from above-mentioned specific position, phase separation from broadening disperses to go
Into.
That is, by above-mentioned specific position or rearward than the specific position grade configure the second dioptric system,
Multiple second light shafts projected from first refractive optical system are incident on what the second dioptric system had completely respectively
The different flat surface in inclination angle (or convex surface).The light that as a result, it is possible to keep the radiation illumination for including in each second light shafts high
Line is condensed to almost the same position.
Above-mentioned second dioptric system can be only fitted to not to be projected from adjacent above-mentioned semiconductor laser element
The position of above-mentioned second light shafts incidence.This corresponds to the second dioptric system of regulation relative to first refractive optical system
The preferred upper limit value of spaced apart locations.
If the second dioptric system is configured in the position extremely remote from first refractive optical system, then from adjacent half
The second light shafts that conductor laser unit projects are incident on the second refractive optics system.At this time, it may occur however that following problem.
Since the second dioptric system is configured in the position extremely remote from first refractive optical system, from same first
Multiple second light shafts that dioptric system projects are completely separated from each other, and then are incident on the with the big state of its standoff distance
Each flat surface (or each convex surface) of two dioptric systems.As a result, needing to make each flat surface in the second dioptric system
(or each convex surface) becomes larger or the interval between (or between each convex surface) each flat surface is made to become larger, and leads to the second dioptric system
Scale becomes larger.
In turn, for multiple light emissions that are located among the second dioptric system, to go out the adjacent direction in region (such as aftermentioned
Fig. 7 in X-direction) end flat surface (or convex surface), incident the projected from corresponding first refractive optical system
Two light shafts.In contrast, among the second dioptric system be located at above-mentioned end other than part flat surface (or
Convex surface), other than carrying out the second light shafts of self-corresponding first refractive optical system, also incidence is from the first adjacent folding
Penetrate the second light shafts of optical system.In this case, the more light direction for including in the second light shafts is big with chief ray
It advances for different directions, it is therefore possible to the reductions of the utilization efficiency of light.
In contrast, by using above-mentioned structure, without make the expanded in size of the second dioptric system to it is necessary with
On, it can be improved the utilization efficiency of light.
The projector of the utility model is characterized in that, using the light projected from above-mentioned light supply apparatus, is thrown image
Shadow.
Utility model effect
According to the utility model, realizes the expansion for inhibiting unit scale using multiple semiconductor laser chips and mention
The light supply apparatus of High Light Output.
Detailed description of the invention
Figure 1A is the perspective view for showing schematically the construction of semiconductor laser chip of single-shot beam type.
Figure 1B be divided into the case where light shafts that will be projected from the semiconductor laser chip of Figure 1A are from X-direction and from
Y-direction observation situation and the figure that schematically illustrates.
Fig. 2A be schematically illustrated at semiconductor laser chip rear class be configured with it is flat in YZ in the case where collimation lens
The figure for the light shafts that face side travels upwardly.
Fig. 2 B be schematically illustrated at semiconductor laser chip rear class be configured with it is flat in XZ in the case where collimation lens
The figure for the light shafts that face side travels upwardly.
Fig. 3 A is the perspective view for showing schematically the construction of semiconductor laser chip of multi-emitting figure.
Fig. 3 B be divided into the case where light shafts that will be projected from the semiconductor laser chip of Fig. 3 A are from X-direction and from
The case where Y-direction is observed and the figure that schematically illustrates.
Fig. 4 be schematically illustrated at the semiconductor laser chip of Fig. 3 A rear class be configured in the case where collimation lens
The figure for the light shafts advanced on XZ in-plane.
Fig. 5 be schematically illustrated at the structure of Fig. 4 compared to expanding at a distance between emitter in the case where in XZ plane
The figure of the light shafts just travelled upwardly.
Fig. 6 is the semiconductor laser chip and collimation lens for being schematically illustrated at configuration multiple groups Fig. 3 A, and will be from each standard
In the case that the light shafts that straight lens project pass through collector lens optically focused, in the figure for the light shafts that XZ in-plane is advanced.
Fig. 7 is the figure for showing schematically the structure of an embodiment of light supply apparatus.
Fig. 8 is that adjacent two semiconductor laser elements and behind the second refraction light of grade configuration are extracted from Fig. 7
System and the figure illustrated.
Fig. 9 is that the light emission having from a semiconductor laser chip is gone out region to first refractive optics in fig. 8
The figure that the part of system amplifies.
Figure 10 is the figure in fig. 8 amplifying the part near the second dioptric system.
Figure 11 is the schematical figure in fig. 8 omitting the display of the light other than chief ray and illustrating.
Figure 12 is schematical in the case that the construction of the second dioptric system to be set as to other forms in Figure 11
Figure.
Figure 13 is schematical in the case that the construction of the second dioptric system to be set as to other forms in Fig. 7
Figure.
Figure 14 is schematical in the case that the construction of the second dioptric system to be set as to other forms in Figure 11
Figure.
Figure 15 is schematical in the case that the construction of the second dioptric system to be set as to other forms in Fig. 7
Figure.
Figure 16 is the figure for showing schematically the structural example of the projector including light supply apparatus.
Figure 17 is the figure for showing schematically the structure of other embodiments of light supply apparatus.
Figure 18 is the figure for showing schematically the structure of other embodiments of light supply apparatus.
Description of symbols
1: light supply apparatus；
2: semiconductor laser element；
3: the second dioptric systems；
5: semiconductor laser chip；
6: first refractive optical system；
10,20: light emission goes out region (emitter)；
11,21: the first light shafts；
31, the flat surface of 32: the second dioptric systems；
The convex surface of 33: the second dioptric systems；
40: rear class optical system；
51: constituting the dioptric system of a part of the second dioptric system；
52: constituting the collector lens of a part of the second dioptric system；
61: the optical axis of first refractive optical system；
The optical axis of 63: the second dioptric systems；
70: light-collecting area；
80: lamp optical system；
81: diffuser plate；
82: lens；
83: dichroscope；
84: fluorophor wheel；
85: mirror；
86: filter wheel；
87: column type integrator；
90: image optical system；
91: lens；
92: total reflection prism；
93:DMD；
94: projection lens；
100,110: semiconductor laser chip；
101,111,112: emitter；
101L, 111L, 112L: the light shafts projected from emitter；
102: collimation lens；
120: collector lens；
131,132: imaging position；
F6: the focal length of first refractive optical system.
Specific embodiment
The light supply apparatus of the utility model and each embodiment of projector are said hereinafter, suitably referring to attached drawing
It is bright.In addition, each attached drawing below all schematically illustrates, actual size might not be consistent with the size on attached drawing.
Fig. 7 is the figure for showing schematically the structure of an embodiment of light supply apparatus.Light supply apparatus 1, which has, multiple partly leads
Body laser unit (2,2 ...) and correspond to the quantity of each semiconductor laser element (2,2 ...) and configure the
Two dioptric systems 3.In addition, illustrating the rear class optical system being guided from the light that the second dioptric system 3 projects in Fig. 7
System 40.Correspond to the quantity of each semiconductor laser element (2,2 ...) about the second dioptric system 3 and configures this
Point 0 is described referring to Fig.1 below.
Semiconductor laser element 2 has semiconductor laser chip 5 and first refractive optical system 6.Fig. 8 is to extract phase
2 adjacent semiconductor laser elements 2 and the second dioptric system 3 accordingly configured with the semiconductor laser element 2
And the figure illustrated.In the present embodiment, semiconductor laser chip 5 is that have multiple light emissions to go out the multiple of region (10,20)
The construction of beam type, show with referring to Fig. 3 A come the same shape of the semiconductor laser chip 110 that describes.Hereinafter, with Fig. 3 A
Equally, by light emission go out region (10,20) adjacent direction be set as X-direction, optical axis direction be set as to Z-direction, will be with X and the side Z
Y-direction is set as to orthogonal direction to be illustrated.
Fig. 9 is will to go out region (10,20) to the first folding from the light emission that a semiconductor laser chip 5 has in Fig. 8
Penetrate the figure of the part amplification of optical system 6.
The width that each light emission that semiconductor laser chip 5 has goes out the fast axis direction (direction y) of region (10,20) is
2 μm hereinafter, be 1 μm as an example.Each light emission go out the slow-axis direction (X-direction) in region (10,20) width be 5 μm or more and
500 μm hereinafter, be 80 μm as an example.Each light emission go out region (10,20) interval (X-direction) be 50 μm or more and 1000 μm with
Under, it is 150 μm as an example.
Semiconductor laser chip 5 goes out the first light shafts that region (10,20) project roughly conical shape from each light emission
(11,21).At this point, same as describing referring to Fig. 3 B, each light emission goes out region (10,20) and is formed in same seat about Y-direction
Cursor position, therefore each first light shafts (11,21) are completely overlapped when from X-direction.On the other hand, each light emission goes out region
(10,20) are formed in different coordinate positions about X-direction, thus when from Y-direction each first light shafts (11,21) with
The mode that respective positions deviate is shown.Fig. 8 and Fig. 9 is showed schematically each first light shafts (11,21) from Y-direction
The figure of ray plot when observation.
More particularly, as shown in figure 9, the first light shafts 11 are by the light group that is clipped by glazed thread 11a and lower light l1b
Regulation.The light advanced between glazed thread 11a and lower light 11b is defined as chief ray 11m.Equally, the first light shafts
21 by clipping light group regulation by glazed thread 21a and lower light 21b, and there are chief ray 21m for position therebetween.For side
Just, chief ray (11m, 21m) is indicated with single dotted broken line.In addition, in Fig. 8 and Fig. 9, by the light of first refractive optical system 6
Axis is illustrated as optical axis 61.
Semiconductor laser chip 5 is located on the optical axis 61 of corresponding first refractive optical system 6 with its center 5a
Mode configure.It is respectively arranged at and is positioned away from about X-direction from optical axis 61 as a result, each light emission goes out region (10,20).Into
And each light emission goes out in region (10,20), also in the X direction have size, therefore the end of the side close with optical axis 61 with
Between the end of the side remote from optical axis 61, it is poor to generate in the distance respectively away from optical axis 61.
Semiconductor laser chip 5 mutually leaves first refractive optical system 6 with first refractive optical system 6 in z-direction
Focal length f6 and configure.Go out each the first of region (10,20) injection from each light emission of semiconductor laser chip 5 as a result,
Light shafts (11,21) are reflected by first refractive optical system 6, are transformed to the second light shafts as substantially parallel light shafts respectively
(12,22).As long as each first light shafts (11,21) are transformed to as substantially parallel light shafts by first refractive optical system 6
The second light shafts (12,22) optical system, be made of and be ok any optical component.
It is respectively arranged at and is positioned away from about X-direction from optical axis 61 as described above, each light emission goes out region (10,20).Cause
This, the respective chief ray (12m, 22m) of the second light shafts (12,22) as substantially parallel light shafts is towards first refractive optics
It advances (the light emergence face side) focal position of the rear class of system 6.As a result, the second light shafts (12,22) are respectively as substantially
Directional light harness is advanced, but respective direction of travel is different.The case where each second light shafts (12,22) intersect is illustrated in Fig. 8.
Second light shafts (12,22) are directed to configuration in the second refractive optics of the rear class of first refractive optical system 6
System 3.Figure 10 is by the figure of the part amplification in Fig. 8 near the second dioptric system 3.In addition, Figure 11 be in order to illustrate
The figure conveniently and from the display for omitting the light other than chief ray (12m, 22m) in Fig. 8 illustrated.
As shown in figure 11, there is the second dioptric system 3 flat surface 31 that light incident surface side is arranged in and setting to exist
Light emergence face side show multiple and different inclinations angle (θ a, θ b, θ c, θ d ...) multiple flat surfaces (32a, 32b, 32c,
32d,……).In addition, the different multiple flat surfaces in inclination angle are referred to as sometimes " flat in the second dioptric system 3
Face 32 ".
In the present embodiment, flat surface 31 is made of the face orthogonal with the optical axis 63 of the second dioptric system 3.Second
The optical axis 63 of dioptric system 3 refers to the optical axis across the whole central location of the second dioptric system 3.In addition, Figure 11
In due to illustrating only a part of the second dioptric system 3, the second dioptric system 3 can also be in the X direction
Include the flat surface 32 other than flat surface (32a, 32b, 32c, 32d).
Here, each flat surface (32a, 32b, 32c, 32d ...) inclination angle (θ a, θ b, θ c, θ d ...) refer in XZ
Go out the optical axis in region (10,20) adjacent direction (X-direction) and the second dioptric system 3 in plane, i.e. in multiple light emissions
In plane formed by 63 direction (Z-direction), angle when using the direction of above-mentioned optical axis 63 as benchmark, about the angle, according to
Direction of rotation adds positive and negative value to distinguish.Here, direction of rotation is set as just for the case where counter clockwise direction, it will be square clockwise
To the case where be set as negative.At this point, illustrated in Figure 11 inclination angle (θ a, θ b, θ c, θ d ...) be all positive value.In addition, Figure 11
The tiltangleθ of the flat surface 32 of the lower half portion of second dioptric system 3 of the diagram of middle omission is all negative value.
For the second dioptric system 3, so as to be incident on each flat surface (32a, 32b, 32c, 32d ...)
The mode that the respective mutual standoff distance dm of chief ray (12m, 22m) (referring to Fig.1 0) of second light shafts (12,22) is reduced is set
Fixed each inclination angle (θ a, θ b, θ c, θ d ...).It is further preferred that so that each chief ray (12m, 22m) is substantial towards each other
The mode at identical position set each inclination angle (θ a, θ b, θ c, θ d ...).
More particularly, in relation to projected by incidence from same first refractive optical system 6 multiple second light shafts (12,
22) flat surface group (such as 32a and 32b), then inclination angle remoter with the distance of the optical axis 63 away from the second dioptric system 3
The smaller mode of absolute value be set.That is, in the example of Figure 11, the inclination angle quilt of each flat surface (32a, 32b, 32c, 32d)
It is set as, so that θ a < θ b, θ c < θ d are set up.It is also the same in the flat surface 32 that the illustration is omitted in Figure 11.
If being conceived to a flat surface 32a, it is incident on 22m pairs of chief ray of the second light shafts 22 of flat surface 32a
Should in flat surface 32a tiltangleθ a and reflect, direction of travel is transformed to towards light-collecting area 70 (referring to Fig. 7).Second light
Beam 22 is transformed to substantially parallel light shafts by first refractive optical system 6, therefore about the key light for including in the second light shafts 22
Direction of travel is also transformed to direction and chief ray 22m substantially same direction by the light other than line 22m.As a result, poly-
Imaging in light region 70.
If being conceived to other flat surfaces 32b, it is incident on 12m pairs of chief ray of the second light shafts 12 of flat surface 32b
Should in flat surface 32b tiltangleθ b and reflect, direction of travel is transformed to towards above-mentioned light-collecting area 70 (referring to Fig. 7).At this point,
About the light other than the chief ray 12m for including in the second light shafts 12, direction of travel is also transformed to direction and chief ray 12m
Substantially same direction.As a result, being imaged in light-collecting area 70.
In the example shown in Figure 11, the second dioptric system 3 corresponds to some semiconductor laser element 2, has:
A part of 3a has the flat surface 32a of tiltangleθ a as defined in indicating；And a part of 3b, there is tiltangleθ as defined in indicating
The flat surface 32b of b.Equally, the second dioptric system 3 corresponds to other semiconductor laser elements 2, has: a part of 3c,
With the flat surface 32c for indicating defined tiltangleθ c；And a part of 3d, there is the flat surface of tiltangleθ d as defined in indicating
32d。
That is, the second dioptric system 3 that light supply apparatus 1 has corresponds to semiconductor laser element 2
Quantity, and it correspondingly includes to indicate not that the light emission that has with each semiconductor laser element 2, which goes out the quantity in region (10,20),
The flat surface 32 at same inclination angle.With this configuration, it is incident on the key light of multiple second light shafts (12,22) of each flat surface 32
The direction of travel of line (12m, 22m) is all transformed to, so that the mutual standoff distance of chief ray reduces, is more preferably directed towards poly-
Light region 70.In addition, will also advance about the light other than the chief ray (12m, 22m) for including in the second light shafts (12,22)
Direction transformation is direction and each chief ray (12m, 22m) substantially same direction.As a result, from each second dioptric system
3 the second light shafts (12,22) projected are advanced both facing to identical light-collecting area 70.As a result, each second light shafts (12,22)
It is directed in the light-collecting area 70 for showing relatively narrow area, therefore by configuring rear class in the region comprising light-collecting area 70
The plane of incidence of optical system 40 can guide light of high brightness to rear class optical system 40.
In addition, the second dioptric system 3 is preferably disposed on than the second light of adjacent pair as shown in Fig. 8
The lower light 12b of the second light shafts 12 of the glazed thread 22a and another party of the second light shafts 22 of a side among beam (12,22)
Rear class is leaned in the position (specific position) of intersection.At this point, to the second dioptric system 3 each flat surface (32a, 32b, 32c,
32d ...) it is incident before stage, the second adjacent light shafts (12,22) are separated completely each other, therefore can make each the
The substantially the entirety of light for including in two light shafts (12,22) is advanced to direction identical with each chief ray (12m, 22m).
As long as the second dioptric system 3 have make incident each second light shafts (12,22) each chief ray (12m,
Direction of travel 22m) is transformed to the function towards roughly the same position, is made of and is ok any optical component.As one
Example, the second dioptric system 3 with prism made of multiple flat surfaces 32 by constituting.
In addition, as shown in Figure 12 and Figure 13, the second dioptric system 3 is also possible to include by different every in inclination angle
The structure of multiple optical elements (3a, 3b, 3c, 3d ...) of a flat surface 32 (32a, 32b, 32c, 32d ...) segmentation.?
In this case, the second dioptric system 3 has the optical element of quantity corresponding with the quantity of semiconductor laser element 2
(3a、3b、3c、3d、……)。
In addition, the second dioptric system 3 is also possible to replace the different flat surface 32 in inclination angle and have flat with this
The structure of convex surface 33 based on face 32.Figure 14 is to copy Figure 11, schematically illustrates the second refraction light for having convex surface 33
The figure of a part of system 3.
Here, the convex surface 33 based on flat surface 32 refers to the line for indicating will to be made of flat surface 32 in XZ plane
The curved surface of the curve of the arc-shaped or oval arcuation of the beginning and end connection of section.It is further preferred that chief ray (12m, 22m) institute
The inclination angle of the tangent plane of convex surface 33 in incident position is set to, so that working as each chief ray (12m, 22m) to evagination
When face 33 is incident, respective chief ray (12m, 22m) position substantially the same towards each other.
At this point, each focal length of convex surface 33 is preferably between the second dioptric system 3 and light-collecting area 70
More than distance, more preferably the two is substantially the same.In this case, about including in each second light shafts (12,22)
Light other than chief ray (12m, 22m), also can make it be condensed to the position roughly the same with chief ray (12m, 22m), because
This can realize the high light of brightness (referring to Fig.1 5).
In addition, in the case where the plane of incidence of rear class optical system 40 is configured than the forward grade of light-collecting area 70, in chief ray
At the position nearby that (12m, 22m) intersects, each second light shafts (12,22) are incident on rear class optical system 40.In the situation
Under, the focal length of each convex surface 33 is preferably not present with hypothesis rear class optical system 40 and makes chief ray (12m, 22m)
The distance between the position intersected both when hypothetically extending and the second dioptric system 3 are substantially the same.In this case,
About the light other than the chief ray (12m, 22m) for including in each second light shafts (12,22), also make it to be condensed to chief ray
State near (12m, 22m) is incident to rear class optical system 40.
It can be integrated using column type as rear class optical system 40 according to the utilization purpose of the light projected from light supply apparatus 1
The various optical systems such as instrument, lens.
Figure 16 is the figure for showing schematically the structural example of the projector including above-mentioned light supply apparatus 1.Projector 9 has packet
Include the lamp optical system 80 and image optical system 90 of light supply apparatus 1, the image optical system 90 is according to from light optics
The photogenerated image light of the guidance of system 80 simultaneously projects on screen.In addition, in this embodiment, the rear class optical system illustrated in Fig. 7
40 correspond to configuration in the element of the lamp optical system 80 of the rear class of light supply apparatus 1.
In the example shown in Figure 16, it is contemplated that make the blue the case where using light source of light supply apparatus 1.It is projected from light supply apparatus 1
Blue light of high brightness as needed by diffuser plate 81 reduce interference capability after, it is narrow to be transformed to width of light beam by lens 82
Directional light is then channeled to dichroscope 83.Blue light guides after being reflected by dichroscope 83 to fluorophor wheel 84.This
When, it can be as needed by lens light gathering.In fluorophor wheel 84, the coating region of yellow fluorophor is equipped with by every defined angle
Domain, green-emitting phosphor the area of application, make the light transmissive gap regions of blue, corresponding to the rotation of fluorophor wheel 84, by fluorescence
The wavelength change of light/or the light across fluorophor wheel 84 that body wheel 84 reflects.
Have passed through the blue light of fluorophor wheel 84 as needed via lens by it is parallel it is photochemical after, via mirror (85,
85,85) dichroscope 83 is turned again to.In addition, lens are arranged between mirror as needed.
The sodium yellow or green light transmission dichroscope 83 reflected by fluorophor wheel 84.That is, in dichroscope 83, white light
It is synthesized, and is incident on column type integrator 87 via filter wheel 86 with after lens light gathering as needed.Filter wheel 86 is pressed
It is equipped with: is coated with the region for the optical filter that shortwave long component is truncated and the region for transmiting light as former state per defined angle.
If light transmission filter areas, shortwave long component is truncated, and generates red light.
It is incident after adjusting width of light beam via lens as needed for having passed through the synthesis light of column type integrator 87
To image optical system 90.Image optical system 90 is the dress for receiving to generate image from the light that lamp optical system 80 is irradiated
It sets, such as with lens 91, total reflection prism 92 and DMD (digital micromirror device, registered trademark) 93.Have passed through column type product
If the synthesis light of point instrument 87 is incident to total reflection prism 92 via lens 91, by guidance after prism facets reflection to DMD93.
DMD93 has multiple movable micro mirrors, and not shown control unit is matched with the timing for being incident on respective white light, and root
It is controlled according to the video signal inputted.Light transmission total reflection prism 92 and guidance after being modulated by DMD93 extremely project
Lens 94 project on screen (not shown) via projection lens 94.
As shown in figure 16, projector 9 utilizes the light generated by light supply apparatus 1 as light source, bright thus, it is possible to utilize
High light is spent, therefore the output of projector 9 can be greatly improved.
In addition, illustrate the case where modulating device is made of the element (DMD) of reflection-type in projector 9 shown in Figure 16,
But it can also be made of the liquid crystal cell of transmission-type.Lamp optical system 80, image optical system 90 can be according to modulating devices
Structure and suitably change.
[other embodiments]
Hereinafter, being illustrated to other embodiments.
<1>semiconductor laser chip 5 described referring to Fig. 7 etc. is that have to go out the more of region (10,20) there are two light emission
Emit three-dimensional-structure.The quantity that the light emission that the semiconductor laser chip 5 has goes out region is not limited to 2, is also possible to 3
More than a.The quantity of the different flat surface in the inclination angle that second dioptric system 3 has (3a, 3b ...) is according to same
The light emission that semiconductor laser element 2 is included goes out the quantity in region and sets.
On the contrary, being also possible to each semiconductor laser chip 5 is to have individual light emission referring for example to Figure 1A come what is described
The single-shot in region penetrates three-dimensional-structure out, is the injection light from multiple semiconductor laser chips 5 to first refractive optical system 6
Incident structure (referring to Fig.1 7).In turn, as shown in figure 17, in the injection light from multiple semiconductor laser chips 5 to
In the incident mode of one dioptric system 6, each semiconductor laser chip 5 is also possible to multi-emitting figure construction.In addition, the
As long as a dioptric system 6 is arranged in correspondence with each semiconductor laser chip 5, even if the first refractive optical system
6 itself are located separately, and also may be formed integrally as array-like.
2 > of < in the above-described embodiment, be set as the second dioptric system 3 with 6 opposite side of first refractive optical system
Face, i.e. light emergence face side there are the different multiple flat surfaces 32 in inclination angle, but can also be in 6 side of first refractive optical system
Multiple flat surfaces 32 that face, i.e. light incident surface side have inclination angle different.In this case, also can replace " flat surface 32 " and
It is set as " convex surface 33 ".
But according to the difference of angle, being incident on a part of light of the second light shafts (12,22) of flat surface 32, have can
It can be totally reflected, therefore from the viewpoint of the utilization efficiency for further increasing light, the second dioptric system 3 is preferably in light
It projects surface side and flat surface 32 is set.
3 > of < is in the above-described embodiment, it is contemplated that each semiconductor laser chip 5 goes out region (10,20) for light emission and is formed in
On the end face of semiconductor laser chip 5 so-called " end face light emitting-type " construction the case where and be illustrated.But even if
Each semiconductor laser chip 5 is so-called " surface-emitting type " construction that light is taken out along the stacking direction of semiconductor layer, similarly
The utility model can be applied.
<4>as long as multiple light shafts are carried out optically focused and to the application of defined irradiation object object irradiation, in addition to projection
Also the light supply apparatus 1 of the utility model can be applied other than instrument.As an example, light supply apparatus 1 can be used as exposure device
Light source utilize.
5 > of < is as shown in figure 18, and the second dioptric system 3 is also possible to include dioptric system 51 and collector lens 52
Structure.Dioptric system 51 has the mutually different flat surface in inclination angle (51a, 51b) in light incident surface side.In addition, folding
It penetrates optical system 51 and has the flat surface 51c orthogonal relative to optical axis 63 in light emergence face side, with what is linked with flat surface 51c
Mode is configured with collector lens 52.
Flat surface (51a, 51b) goes out the chief ray that region (10,20) are projected, inclination angle from different light emissions by incidence respectively
It is set to keep both sides' chief ray substantially parallel.As a result, the second light shafts (12,22) for being incident on dioptric system 51 are made
It advances in dioptric system 51 for substantially parallel light shafts.Then, if it is incident to the collector lens 52 linked, the
The chief ray (12m, 22m) of two light shafts (12,22) and the light advanced around it are condensed to the focus of collector lens 52.By
This, it is same as the structure of Figure 15, about the light other than chief ray (12m, 22m), it can also be condensed to and chief ray
(12m, 22m) roughly the same position, therefore can realize the high light of brightness.
Only an example, the utility model do not limit the optical arrangement mode that 6 > of < above-mentioned light supply apparatus 1 has
In each structure of diagram.For example, the row for making light can also be there may suitably be between certain optical system and other optical systems
Into the reflective optics of direction change.
Claims (7)
1. a kind of light supply apparatus, which is characterized in that have:
Multiple semiconductor laser elements, including multiple light emissions go out region and first refractive optical system, and above-mentioned multiple light emissions go out
Region is arranged on identical or different semiconductor laser chip, and above-mentioned first refractive optical system is by incidence from adjacent more
A above-mentioned light emission goes out multiple first light shafts of region injection, and above-mentioned multiple first light shafts are transformed to respectively as substantially flat
Multiple second light shafts of row light shafts simultaneously project；And
Second dioptric system, comprising multiple flat surfaces with different inclinations angle or with each of above-mentioned multiple flat surfaces
Multiple convex surfaces outstanding based on flat surface, multiple above-mentioned second projected from identical above-mentioned semiconductor laser element
The respective at least part of light shafts is incident on different above-mentioned flat surfaces or different above-mentioned convex surfaces, to reduce from identical
The mode for the mutual standoff distance of multiple above-mentioned respective chief rays of second light shafts that above-mentioned semiconductor laser element projects
The direction of travel of multiple above-mentioned second light shafts is converted and is projected,
The quantity of above-mentioned second dioptric system and above-mentioned semiconductor laser element is accordingly configured.
2. light supply apparatus as described in claim 1, which is characterized in that
Above-mentioned second dioptric system is comprising with each above-mentioned in multiple above-mentioned flat surfaces with different inclinations angle
To the structure with above-mentioned first refractive optical system opposite side multiple convex surfaces outstanding based on flat surface,
The focal length of multiple above-mentioned convex surfaces is from the position of the light emergence face side of above-mentioned second dioptric system to from upper
State the second dioptric system injection the mutual crossover sites of multiple above-mentioned respective chief rays of second light shafts until away from
From above, or respectively from the position of the light emergence face side of above-mentioned second dioptric system to multiple above-mentioned second light shafts
Chief ray the mutual crossover sites of imaginary extended line until distance more than.
3. light supply apparatus as claimed in claim 1 or 2, which is characterized in that
Incident above-mentioned multiple flat of multiple above-mentioned second light shafts projected from identical above-mentioned first refractive optical system
Face or the above-mentioned multiple evaginations incident from multiple above-mentioned second light shafts of identical above-mentioned first refractive optical system injection
Above-mentioned multiple flat surfaces based on face, the distance of the optical axis away from above-mentioned second dioptric system is remoter, then inclination angle
Absolute value it is smaller.
4. light supply apparatus as claimed in claim 1 or 2, which is characterized in that
Above-mentioned first refractive optical system has curved surface outstanding in light emergence face side,
Above-mentioned second dioptric system is configured relative to above-mentioned first refractive optical system than above-mentioned first refractive optical system
The focal length of system further from position.
5. light supply apparatus as claimed in claim 4, which is characterized in that
Above-mentioned second light of above-mentioned second dioptric system configuration side among above-mentioned second light shafts of adjacent pair
The specific position that the lower light of the glazed thread of beam and above-mentioned second light shafts of another party intersects, or more than above-mentioned specific position
Position far from above-mentioned first refractive optical system.
6. light supply apparatus as claimed in claim 1 or 2, which is characterized in that
The configuration of above-mentioned second dioptric system projected not by incidence from adjacent above-mentioned semiconductor laser element it is above-mentioned
The position of second light shafts.
7. a kind of projector, which is characterized in that
Using the light projected from light supply apparatus of any of claims 1 or 2, image is projected.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2018105267A JP2019211530A (en) | 2018-05-31 | 2018-05-31 | Light source device and projector |
| JP2018-105267 | 2018-05-31 |
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|---|---|
| CN208834084U true CN208834084U (en) | 2019-05-07 |
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| CN201821586056.XU Active CN208834084U (en) | 2018-05-31 | 2018-09-28 | Light supply apparatus, projector |
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| JP (1) | JP2019211530A (en) |
| CN (1) | CN208834084U (en) |
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| CN110676691A (en) * | 2019-09-12 | 2020-01-10 | 华中科技大学 | Semiconductor laser spectrum beam combining device and method based on collimation-deflection element |
| JP2021036307A (en) * | 2019-08-26 | 2021-03-04 | カシオ計算機株式会社 | Light source device and projection device |
| CN113296278A (en) * | 2020-02-24 | 2021-08-24 | 宁波激智科技股份有限公司 | Alignment film, interference-reducing alignment film, laminating alignment film, image recognition module and preparation method thereof |
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| JPH0961610A (en) * | 1994-10-31 | 1997-03-07 | Nippon Steel Corp | Binary optics, and light convergence optical system and laser machining device using binary optics |
| US20090122272A1 (en) * | 2007-11-09 | 2009-05-14 | Silverstein Barry D | Projection apparatus using solid-state light source array |
| JP5159516B2 (en) * | 2008-08-27 | 2013-03-06 | 株式会社東芝 | Laser irradiation device |
| JP5429543B2 (en) * | 2009-09-15 | 2014-02-26 | カシオ計算機株式会社 | Light source unit and projector |
| KR20130108359A (en) * | 2010-09-22 | 2013-10-02 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | Tilted dichroic color combiner iii |
| JP2012221820A (en) * | 2011-04-12 | 2012-11-12 | Seiko Epson Corp | Method of adjusting light source device, light source device, and projector |
| WO2014115194A1 (en) * | 2013-01-24 | 2014-07-31 | パナソニック株式会社 | Light source, light source unit, and light source module using same |
| JP2015153889A (en) * | 2014-02-14 | 2015-08-24 | 三菱電機株式会社 | laser combining optical device |
| JP2016096333A (en) * | 2014-11-10 | 2016-05-26 | 三菱電機株式会社 | Semiconductor laser device |
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- 2018-05-31 JP JP2018105267A patent/JP2019211530A/en active Pending
- 2018-08-22 TW TW107129230A patent/TW202004860A/en unknown
- 2018-08-28 WO PCT/JP2018/031684 patent/WO2019230008A1/en active Application Filing
- 2018-09-28 CN CN201821586056.XU patent/CN208834084U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021036307A (en) * | 2019-08-26 | 2021-03-04 | カシオ計算機株式会社 | Light source device and projection device |
| CN110676691A (en) * | 2019-09-12 | 2020-01-10 | 华中科技大学 | Semiconductor laser spectrum beam combining device and method based on collimation-deflection element |
| CN113296278A (en) * | 2020-02-24 | 2021-08-24 | 宁波激智科技股份有限公司 | Alignment film, interference-reducing alignment film, laminating alignment film, image recognition module and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019211530A (en) | 2019-12-12 |
| TW202004860A (en) | 2020-01-16 |
| WO2019230008A1 (en) | 2019-12-05 |
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