CN108803219A - A kind of light fixture applied in laser projection device - Google Patents
A kind of light fixture applied in laser projection device Download PDFInfo
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- CN108803219A CN108803219A CN201810404706.2A CN201810404706A CN108803219A CN 108803219 A CN108803219 A CN 108803219A CN 201810404706 A CN201810404706 A CN 201810404706A CN 108803219 A CN108803219 A CN 108803219A
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- Prior art keywords
- spherical lens
- emergent ray
- light fixture
- lens
- light
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/206—Control of light source other than position or intensity
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2066—Reflectors in illumination beam
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention provides a kind of light fixtures applied in laser projection device, the light fixture includes the first spherical lens, the second spherical lens, non-spherical lens, first spherical lens is located on the path of the first emergent ray projected from photoconductive tube, is used to increase the deviation angle of the first emergent ray and carries out curvature of field correction and distortion correction to the first emergent ray；Second spherical lens is located at from the path for the second emergent ray that the first spherical lens projects, for carrying out curvature of field correction and distortion correction to the second emergent ray；Non-spherical lens is located at from the path for the third emergent ray that the second spherical lens projects, for being projected to TIR prism to third emergent ray progress aberration correction, and by third emergent ray, so that third emergent ray is all-trans by TIR prism is incident upon DMD modules.The program reduces the lateral dimension of light fixture and longitudinal height by way of reduction number of lenses and using special lens, overall cost is also reduced simultaneously, and then solves the problems, such as that light fixture volume is big, of high cost under the premise of ensureing that laser projection device performance is unaffected.
Description
Technical field
The present invention relates to projection art more particularly to a kind of light fixtures applied in laser projection device.
Background technology
Laser projection device is a kind of equipment that can be projected image or video on curtain, be widely used in family,
Office, school and public place of entertainment.As a kind of emerging projection display technique, laser projection product is produced relative to LED projection
Product have higher brightness and service life.But the problem that current laser projection generally existing volume is big, price is high, seriously affects
The development of laser movie theatre.
As shown in Figure 1, 2, it is illumination group of the prior art when designing lighting system in used laser projection device
The structural schematic diagram of part, the prior art generally use 4 spherical lenses, 2 plate plane speculums, TIR architecture mode, i.e., 4
The architecture mode of+2 plate plane speculum+TIR of spherical lens, wherein 4 spherical lenses are respectively bent moon spherical lens, convex spherical
Lens, protruding spherical lens, meniscus lens, since number of lenses is more, the overall cost for not only resulting in eyeglass increases, and can also cause to shine
The lateral dimension of bright component is larger.In addition, the framework of the light fixture in laser projection device shown in FIG. 1 is by introducing two panels
Plane mirror is big although the mode of this two panels plane mirror turned back can ensure that the angular relationship of light fixture
The big longitudinal height for increasing light fixture.
It can be seen that in the prior art the light fixture of laser projection device not only longitudinal size and lateral dimension all compared with
Greatly, and the component of use is more, also higher so as to cause cost.Therefore lack one kind in the prior art in guarantee system
The light fixture of miniaturization and low cost is taken into account while performance.
Invention content
The purpose of the present invention is to provide a kind of light fixtures applied in laser projection device, to solve above-mentioned background
Big, the of high cost defect of light fixture volume in laser projection device is proposed in technology.
To achieve the above object, the present invention proposes a kind of light fixture applied in laser projection device, the laser
Projection arrangement includes light fixture, photoconductive tube, DMD modules, TIR prism, wherein：
The light fixture includes the first spherical lens, the second spherical lens, non-spherical lens；
First spherical lens is located at from the path for the first emergent ray that the photoconductive tube projects, for increasing
It states the deviation angle of the first emergent ray and curvature of field correction and distortion correction is carried out to first emergent ray；
Second spherical lens is located at from the path for the second emergent ray that first spherical lens projects, and is used for
Curvature of field correction and distortion correction are carried out to second emergent ray；
The non-spherical lens be located at from the path for the third emergent ray that second spherical lens projects, be used for pair
The third emergent ray carries out aberration correction, and the third emergent ray is projected to the TIR prism, so that described
The third emergent ray is all-trans by TIR prism is incident upon the DMD modules.
Preferably, further include plane mirror, wherein：
The plane mirror is located on the exit path of second emergent ray, is used for second emergent ray
It turns back to the TIR prism.
Preferably, the diopter φ 1 of first spherical lens be just, and meet：17D≤φ1≤56D；
The diopter φ 2 of second spherical lens be just, and meet：24.5D≤φ2≤33.5D.
Preferably, the plane mirror and plane where second spherical lens are in 45 degree of angles.
Preferably, the incidence surface of the non-spherical lens is convex surface, and the light-emitting surface of the non-spherical lens is plane, and institute
The light-emitting surface for stating non-spherical lens is parallel to the incidence surface of the TIR prism.
Preferably, mutually flat between first spherical lens, second spherical lens and the non-spherical lens
Row；Second spherical lens is between first spherical lens and the non-spherical lens；The non-spherical lens position
Between second spherical lens and the TIR prism.
Preferably, the diopter φ 3 of the non-spherical lens is just, and to meet 3≤29.5D of 22.5D≤φ.
Preferably, the upper surface of the photoconductive tube rotates counterclockwise to specified angle along its length；The specified angle
Degree is identical as the horizontal direction inclination angle of the TIR prism；DMD modules upper surface is parallel with horizontal plane.
Preferably, the material refractive index value range of first spherical lens and the second spherical lens is 1.6 to 1.8；
Ranging from 8 millimeters to 12 millimeters of the Thickness of first spherical lens and the second spherical lens.
Preferably, the material of first spherical lens and second spherical lens is specially lanthanum crown glass.
Preferably, aperture diaphragm is equipped between second spherical lens and the plane mirror；
The distance between the aperture diaphragm and second spherical lens are 3 millimeters to 7 millimeters.
The invention also provides a kind of laser projection device, which includes DMD modules, camera lens, TIR ribs
Mirror, and such as claim 1-8 any one of them light fixtures；Wherein：
The TIR prism is set between the non-spherical lens of the light fixture and the DMD modules, and being used for will be described
The third emergent ray that non-spherical lens is assembled, which is all-trans, to be incident upon in the DMD modules；
The DMD modules include the faces DMD, and the vertical axis direction in the faces DMD is parallel with the optical axis of the camera lens, described
The light is injected into the camera lens by DMD modules for receiving the light injected from the TIR prism；
The camera lens is used to receive the light of the DMD modules outgoing and is imaged.
The present invention provides a kind of light fixture applied in laser projection device, which includes the first spherical surface
Lens, the second spherical lens, non-spherical lens, the first spherical lens are located at the path of the first emergent ray projected from photoconductive tube
On, it is used to increase the deviation angle of the first emergent ray and curvature of field correction and distortion correction is carried out to the first emergent ray；The
Two spherical lenses are located at from the path for the second emergent ray that the first spherical lens projects, for being carried out to the second emergent ray
The curvature of field corrects and distortion correction；Non-spherical lens is located at from the path for the third emergent ray that the second spherical lens projects,
For being projected to TIR prism to third emergent ray progress aberration correction, and by third emergent ray, so that TIR prism will
Third emergent ray, which is all-trans, is incident upon DMD modules.The program is reduced by way of reduction number of lenses and using special lens
The lateral dimension of light fixture and longitudinal height, while overall cost is also reduced, and then ensureing laser projection device
Solve the problems, such as that light fixture volume is big, of high cost under the premise of energy is unaffected.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of the light fixture of laser projection device in the prior art；
Fig. 2 is the schematic diagram of the light fixture piece for the laser projection device for being not added with plane mirror in the prior art；
Fig. 3 is a kind of schematic diagram applied to the light fixture in laser projection device provided in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of light fixture when photoconductive tube does not rotate in the embodiment of the present invention；
Fig. 5 is the postrotational light fixture structural schematic diagram of photoconductive tube in the embodiment of the present invention.
Marginal data：1- photoconductive tubes；2-DMD modules；The faces 21-DMD；3- light fixtures；31-TIR prisms；311- prisms bottom
The first spherical lenses of face 32-；The second spherical lenses of 33-；34- non-spherical lenses；35- plane mirrors；The light extraction of 4- photoconductive tubes
Mouthful.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining relative position relation, motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and should not be understood as
It indicates or implies its relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In the description of the present invention, " multiple " contain
Justice is at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. shall be understood in a broad sense,
For example, " fixation " may be a fixed connection, it may be a detachable connection, or integral；It can be mechanical connection, can also be
Electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary the connection inside two elements or two
The interaction relationship of a element, unless otherwise restricted clearly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, the technical solution between each embodiment of the present invention can be combined with each other, but must be general with this field
Logical technical staff can be implemented as basis, will be understood that when the combination of technical solution appearance is conflicting or cannot achieve this
The combination of technical solution is not present, also not the present invention claims protection domain within.
The present invention proposes a kind of light fixture applied in laser projection device, it is intended to pass through the illumination group of reasonable design
Part framework makes its miniaturization, is cost effective to solve now in the case where ensureing that the performance of laser projection device is unaffected
The problem that some laser projection device generally existing volumes are big, price is high.
As shown in figure 3, being a kind of showing for light fixture applied in laser projection device that the embodiment of the present application proposes
It is intended to, which includes light fixture 3, photoconductive tube 1, DMD modules 2, TIR (Total Internal
Reflection, total internal reflection) prism 31.In the Fig. 3,4 be the light-emitting window of photoconductive tube, the laser light incident that light source is emitted to light
Go out to shoot out again after conduit (carrying out even light).
Wherein, light fixture 3 includes the first spherical lens 32, the second spherical lens 33, non-spherical lens 34, for wherein
Position where each lens and effect, are described as follows respectively：
First spherical lens 32：On the path of the first emergent ray projected from photoconductive tube 1, go out for increasing first
It penetrates the deviation angle of light and curvature of field correction and distortion correction is carried out to the first emergent ray；
Second spherical lens 33：On the path of the second emergent ray projected from the first spherical lens 32, for pair
Second emergent ray carries out curvature of field correction and distortion correction；
Non-spherical lens 34：On the path of the third emergent ray projected from the second spherical lens 33, for the
Three emergent rays carry out aberration correction, and third emergent ray are projected to TIR prism 31, so that TIR prism 31 is by third
Emergent ray, which is all-trans, is incident upon DMD modules 2.
In order to further reduce the size of light fixture, the application turns back to light path by using plane mirror,
To reduce the entire length of light fixture, therefore in the preferred embodiment of the application, which is located at
On the exit path of second emergent ray, for turning back the second emergent ray to TIR prism 311.
In order to coordinate turnover of the plane mirror to light path, in the preferred embodiment of the application, plane mirror 35 divides
It is not in 45 degree of angles with 33 place plane of the second spherical lens, and the incidence surface of non-spherical lens 34 is convex surface, light-emitting surface is
Plane, while the light-emitting surface of the non-spherical lens 34 is parallel to the incidence surface of TIR prism 31.
In specific application scenarios, light fixture 3 can take structure as shown in Figure 5, and wherein light fixture 3 is whole is in
L-type structure, light fixture 3 is using 2 spherical lenses, the illuminating frame of 1 non-spherical lens, 1 plate plane speculum+TIR prism
Structure pattern.In addition, aperture diaphragm, the aperture diaphragm and second can also also be arranged between the second spherical lens and speculum
The distance of spherical lens is that 0.3mm~0.7mm avoids stray light from entering camera lens for blocking stray light.First, photoconductive tube 1
The injection light for entering to inject light fixture 3 is homogenized by multiple reflections, the first spherical lens 32 and the second spherical lens
33 make convergence of rays turn back through plane mirror 35 in diaphragm, and non-spherical lens 34 makes the convergence of injection light again, through TIR
Prism 31 is totally reflected in DMD modules 2, and DMD modules 2 are launched light on camera lens and are imaged.
Above example is all preferred embodiment proposed by the present invention, two plane reflections employed in Traditional illumination assemblies
The mode of turning back of mirror considerably increases longitudinal height of light fixture, big, of high cost so as to cause the volume of laser projection device,
It is unfavorable for laser projection device to extend one's service group and the promotion to producer to product profit.Light fixture 3 in the present embodiment
Two panels plane mirror in Traditional illumination assemblies is substituted using a piece of plane mirror 35, on this basis people in the art
The deformation scheme that member can take other equivalent, these are all within the scope of protection of the present invention.
By using above-mentioned ,+1 non-spherical lens 34+1 plate planes reflection of 2 spherical lenses is set on light fixture 3
The scheme of the framework of mirror 35+TIR can accomplish to minimize while reduce 3 cost of light fixture, make laser projection device in valence
Advantage in terms of lattice and volume dramatically increases, and expands the user group of the product, and improves the profit of product.
In the application preferred embodiment, in order to enable the lens to reach its corresponding function, for the material of lens
And its parameter has carried out specific restriction：The diopter of first spherical lensFor just, and meet： The
The diopter of two spherical lensesFor just, and meet：With this so that the deviation angle of light becomes
Greatly, to reduce the lateral dimension of light fixture 3.And the thickness of the first spherical lens 32 be set as 8 millimeters to 12 millimeters can
The ability of the enhancing correction curvature of field.On the basis of setting the first spherical lens 32 to bent moon spherical lens, eyeglass material is adopted
It can be further such that the deviation angle of light becomes larger with the lanthanum crown glass of high refractive index.
It should be noted that the first spherical lens 32 and the second spherical lens 33 can be not only bent moon spherical lens, also
It can be other kinds of spherical lens.The present invention does not do specific limit to the spherical lens type of the first spherical lens 32 herein
Fixed, those skilled in the art can need to be specifically chosen any spherical lens type, and the change of its spherical lens type according to product
Change can't influence protection scope of the present invention.
Wherein, the eyeglass material of the first spherical lens 32 and the second spherical lens 33 can be not only lanthanum crown glass, may be used also
With the other eyeglass materials of selection.The present invention is not specifically limited the eyeglass material of the two herein, and the variation of eyeglass material is simultaneously
Protection scope of the present invention is not interfered with.
In the preferred embodiment of the application, in order to further reduce the volume of light fixture, by non-spherical lens 34
Closely it is set on TIR prism 31, since the planar side of non-spherical lens 34 close to TIR prism 31 and is conducive to Standard,
Therefore the planar side of non-spherical lens 34 is close to can further to compress the volume of light fixture 3 on TIR prism 31.Due to non-
Spherical plano-convex lens have the ability of stronger aberration correction, are corrected in conjunction with the first spherical lens 32 and the second spherical lens 33
Aberration ability enhances, therefore 3 framework of light fixture of the present invention can not only play the role of identical performance, while can also subtract
The lateral dimension of few light fixture 3.
It is pointed out that the pre-determined distance of the 35 to the second spherical lens of plane mirror 33 in the present embodiment and arrives aspheric
The pre-determined distance of face lens 34 is equal, is conducive to the light after plane mirror 35 is turned back in this way to the pre- of the second spherical lens 33
If distance is equal with the pre-determined distance to non-spherical lens 34 so that optical path length is minimum.Be conducive to the small of light fixture 3 in this way
Type, to make the volume of laser projection device become smaller, cost decline.
In specific application scenarios, technical staff can be arranged TIR prism 31 and be spaced pre-determined distance with non-spherical lens 34,
Light is all-trans for receiving the light emitted from non-spherical lens 34 and is incident upon DMD modules 2 by TIR prism 31.
In another preferred embodiment of the present invention, what is taken is the mode of no plane mirror, in this setup
Under, it is mutually parallel between the first spherical lens, the second spherical lens and non-spherical lens, the second spherical lens is located at the first ball
Between face lens and non-spherical lens, non-spherical lens is between second spherical lens and TIR prism, the set-up mode
By Rational choice lens material knead dough type, to eliminate the aberration of light fixture 3, while ensureing to shine using the framework of doubly telecentric
The illuminance uniformity of bright component 3.
It is slightly lower by selective refraction rate height, transmitance when choosing the material of eyeglass to reduce the cost of light fixture 3
Material in choose, the diopter of non-spherical lens can be arranged in design parameterFor just, and meet
On the basis of the deviation angle of light becomes larger with diopter, light fixture is made by the transmitance of the less compensation loss of eyeglass
3 transmitance remains unchanged, while eliminating illumination using the cooperation between the material of high refractive index, non-spherical lens 34 and eyeglass
The aberration of component 3.
Since TIR prism is typically all irregular obtuse triangle, in the preferred embodiment of the application, light guide
The upper surface of pipe rotates counterclockwise to specified angle along its length；The horizontal direction inclination angle phase of specified angle and TIR prism
Together, DMD modules upper surface is parallel with horizontal plane.
In specific application scenarios, for the lighting system of doubly telecentric, when being not added with plane mirror 35, such as Fig. 4
It is shown, inclined predetermined angle α between the faces DMD 21 and horizontal plane.The inclination angle in the faces DMD 21 is since the shape of TIR prism 31 causes
, when TIR prism 31 is right angled triangle, the phenomenon that will produce secondary total reflection, therefore TIR prism 31 is obtuse angle triangle
Shape, therefore lead to the bottom surface 311 of TIR prism 31 there are angle α with horizontal plane, since DMD is parallel to the bottom surface 311 of TIR prism 31,
So just there are certain inclination alphas between horizontal plane in the faces DMD.
But for non-telecentric system, the inclination angle caused by no TIR prism 31, therefore a piece of speculum is only needed to be used for
Reduce lateral dimension.The miniaturization for ensureing light fixture 3 simultaneously for the inclination angle in the faces compensation DMD 2121, can be used rotation light
The mode of conduit 11 reduces a piece of plane mirror 35.In this embodiment, when around photoconductive tube 11, its length direction is inverse
When hour hands rotation alpha, as shown in figure 4, photoconductive tube 1 with respect to the horizontal plane has inclination angle-α at this time, the faces DMD 21 because having rotated α counterclockwise,
The faces DMD 21 are parallel to horizontal plane, i.e.-α=0 α at this time.The longitudinal size of light fixture 3 is not only reduced in this way, while therefore being subtracted
Lack a piece of speculum and also reduces cost.
Conceived based on foregoing invention, the application also proposed a kind of laser projection device, which includes DMD
Module 2, camera lens (not shown), TIR prism 31, and the as above light fixture 3 of any one, wherein：
TIR prism 31 is set between the non-spherical lens of light fixture 3 and DMD modules 2, is used for non-spherical lens 34
The third emergent ray of convergence, which is all-trans, to be incident upon in DMD modules 2；
DMD modules 2 include the faces DMD 21, and the vertical axis direction in the faces DMD 21 is parallel with the optical axis of camera lens, and DMD modules 2 are used for
The light injected from TIR prism 31 is received, and the light is injected into camera lens；
Camera lens is used to receive the light of the outgoing of DMD modules 2 and is imaged.
By using the above-mentioned technical proposal of the application.The program is by reducing number of lenses and using the side of special lens
Formula also reduces overall cost come the lateral dimension for reducing light fixture and longitudinal height, and then is ensureing laser throwing
Solve the problems, such as that light fixture volume is big, of high cost under the premise of image device performance is unaffected.
All it is preferred embodiment proposed by the present invention from above example, those skilled in the art can adopt on this basis
Other equivalent deformation schemes are taken, these are all within the scope of protection of the present invention.
Claims (12)
1. a kind of light fixture applied in laser projection device, which is characterized in that the laser projection device includes illumination
Component, photoconductive tube, DMD modules, TIR prism, wherein：
The light fixture includes the first spherical lens, the second spherical lens, non-spherical lens；
First spherical lens is located at from the path for the first emergent ray that the photoconductive tube projects, for increasing described the
The deviation angle of one emergent ray and curvature of field correction and distortion correction are carried out to first emergent ray；
Second spherical lens is located at from the path for the second emergent ray that first spherical lens projects, for institute
It states the second emergent ray and carries out curvature of field correction and distortion correction；
The non-spherical lens is located at from the path for the third emergent ray that second spherical lens projects, for described
Third emergent ray carries out aberration correction, and the third emergent ray is projected to the TIR prism, so that the TIR
The third emergent ray is all-trans by prism is incident upon the DMD modules.
2. light fixture as described in claim 1, which is characterized in that further include plane mirror, wherein：
The plane mirror is located on the exit path of second emergent ray, for second emergent ray to be turned back
To the TIR prism.
3. light fixture as claimed in claim 2, which is characterized in that
The diopter φ 1 of first spherical lens be just, and meet：17D≤φ1≤56D；
The diopter φ 2 of second spherical lens be just, and meet：24.5D≤φ2≤33.5D.
4. light fixture as claimed in claim 3, which is characterized in that
The plane mirror is in 45 degree of angles with plane where second spherical lens.
5. light fixture as claimed in claim 4, which is characterized in that
The incidence surface of the non-spherical lens is convex surface, and the light-emitting surface of the non-spherical lens is plane, and described aspherical
The light-emitting surface of mirror is parallel to the incidence surface of the TIR prism.
6. light fixture as described in claim 1, which is characterized in that
It is mutually parallel between first spherical lens, second spherical lens and the non-spherical lens；
Second spherical lens is between first spherical lens and the non-spherical lens；
The non-spherical lens is between second spherical lens and the TIR prism.
7. light fixture as claimed in claim 6, which is characterized in that
The diopter of the non-spherical lensFor just, and meet
8. the light fixture as described in claim any one of 1-7, it is characterised in that：
The upper surface of the photoconductive tube rotates counterclockwise to specified angle along its length；The specified angle and the TIR
The horizontal direction inclination angle of prism is identical；
DMD modules upper surface is parallel with horizontal plane.
9. light fixture as claimed in claim 8, which is characterized in that
The material refractive index value range of first spherical lens and the second spherical lens is 1.6 to 1.8；
Ranging from 8 millimeters to 12 millimeters of the Thickness of first spherical lens and the second spherical lens.
10. light fixture as claimed in claim 9, which is characterized in that
The material of first spherical lens and second spherical lens is specially lanthanum crown glass.
11. light fixture as claimed in claim 9, which is characterized in that
Aperture diaphragm is equipped between second spherical lens and the plane mirror；
The distance between the aperture diaphragm and second spherical lens are 3 millimeters to 7 millimeters.
12. a kind of laser projection device, which is characterized in that the laser projection device includes DMD modules, camera lens, TIR prism,
And such as claim 1-11 any one of them light fixtures；Wherein：
The TIR prism is set between the non-spherical lens of the light fixture and the DMD modules, is used for the aspheric
The third emergent ray that face lens are assembled, which is all-trans, to be incident upon in the DMD modules；
The DMD modules include the faces DMD, and the vertical axis direction in the faces DMD is parallel with the optical axis of the camera lens, the DMD moulds
The light is injected into the camera lens by block for receiving the light injected from the TIR prism；
The camera lens is used to receive the light of the DMD modules outgoing and is imaged.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810404706.2A CN108803219A (en) | 2018-04-28 | 2018-04-28 | A kind of light fixture applied in laser projection device |
| PCT/CN2019/075615 WO2019205786A1 (en) | 2018-04-28 | 2019-02-20 | Projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810404706.2A CN108803219A (en) | 2018-04-28 | 2018-04-28 | A kind of light fixture applied in laser projection device |
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| Publication Number | Publication Date |
|---|---|
| CN108803219A true CN108803219A (en) | 2018-11-13 |
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ID=64093665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810404706.2A Pending CN108803219A (en) | 2018-04-28 | 2018-04-28 | A kind of light fixture applied in laser projection device |
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| Country | Link |
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| CN (1) | CN108803219A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111381422A (en) * | 2018-12-28 | 2020-07-07 | 青岛海信激光显示股份有限公司 | Projection apparatus and control method thereof |
| WO2021098278A1 (en) * | 2019-11-19 | 2021-05-27 | 青岛海信激光显示股份有限公司 | Laser projection apparatus |
| CN113448093A (en) * | 2020-03-24 | 2021-09-28 | 精工爱普生株式会社 | Virtual image display device and optical unit |
| US11287732B2 (en) | 2018-12-28 | 2022-03-29 | Hisense Laser Display Co., Ltd. | Optical illumination system and projection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019205786A1 (en) * | 2018-04-28 | 2019-10-31 | 青岛海信激光显示股份有限公司 | Projection device |
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| US11287732B2 (en) | 2018-12-28 | 2022-03-29 | Hisense Laser Display Co., Ltd. | Optical illumination system and projection device |
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| CN113448093B (en) * | 2020-03-24 | 2024-04-26 | 精工爱普生株式会社 | Virtual image display device and optical unit |
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Application publication date: 20181113 |