CN109669315A - Lighting system, projection light machine system and laser dissipation spot method - Google Patents
Lighting system, projection light machine system and laser dissipation spot method Download PDFInfo
- Publication number
- CN109669315A CN109669315A CN201910137659.4A CN201910137659A CN109669315A CN 109669315 A CN109669315 A CN 109669315A CN 201910137659 A CN201910137659 A CN 201910137659A CN 109669315 A CN109669315 A CN 109669315A
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- lens
- gaussian
- piece
- lighting system
- light
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/48—Laser speckle optics
-
- 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
- G03B21/208—Homogenising, shaping of the illumination light
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The present invention provides a kind of lighting system, projection light machine system and laser dissipation spot methods, belong to projection device field.Said lighting system includes successively spaced laser light source, lens subassembly, fly's-eye lens, Gaussian piece and vibration device.The light that laser light source issues forms multiple point light sources by throwing after lens subassembly on fly's-eye lens, and the light issued from fly's-eye lens mixes in spatial so that interference image generates superposition, to realize space dissipation spot.Gaussian piece can periodic vibration so that different moments light is diffused into different positions by Gaussian piece, so that the interference image for generating different moments laser is unstable.Since there are eye storage characteristics for human eye, therefore the unstable interference image (i.e. speckle) that different moments generate can generate synergistic effect at human eye, to realize time dissipation spot.Said lighting system, projection light machine system and laser dissipation spot method can effectively reduce speckle, improve picture quality.
Description
Technical field
The present invention relates to projection device fields, disappear in particular to a kind of lighting system, projection light machine system and laser
Speckle Method.
Background technique
Projection light machine system can substantially be divided into lighting system and projection system, and lighting system generally uses laser light source,
The light that laser light source issues has than wider colour gamut, and therefore, they have relatively good light efficiency and color representation.So
And this projection light machine system has the speckle as caused by coherent illumination.Speckle is derived from the phase scattered from diffusing reflection surface
The interference dependent interaction of dry wave；The quality for the image that this speckle seriously affects.
Summary of the invention
The object of the present invention is to provide a kind of lighting systems, can effectively eliminate or reduce speckle.
Another object of the present invention is to provide a kind of projection light machine systems, and which employs said lighting systems.
Another object of the present invention is to provide a kind of laser dissipation spot methods, can effectively reduce speckle.
The present invention is implemented as follows:
A kind of lighting system, comprising:
Laser light source；
Lens subassembly, the lens subassembly are arranged in the optical path of the laser light source, for sending out the laser light source
Light out becomes collimated light beam；
Fly's-eye lens, the fly's-eye lens are arranged in the optical path of the lens subassembly, for so that the lens subassembly
The collimated light beam of sending becomes multiple point light sources；
Gaussian piece, the Gaussian piece are arranged in the optical path of the fly's-eye lens component, for the point
The light that light source issues is diffused；And
Vibration device, the Gaussian piece can determine a reference planes, and the vibration device is described for driving
Gaussian piece does periodic reverse motion in the reference planes.
Further, the vibration device further includes mounting rack, frame and Power Component；The frame and the mounting rack can
Rotation connection, and can be rotated in the reference planes；The Gaussian piece is connect with the frame.
Further, the Power Component includes motor and cam, and the cam is rotatably connected with the mounting rack；It is described
Motor is connect with the cam drive；The mounting rack includes elastic component, and the elastic component can apply torque to the frame,
So that the frame is abutted with the contoured surface of the cam.
Further, the cam is connect with by shaft with the mounting rack, and the motor passes through gear set and described turn
Axis transmission connection.
Further, the frequency of the vibration device is 60-100Hz, and amplitude is ± 0.5mm.
Further, the lens subassembly includes the first collimation lens and the second collimation lens of relative spacing setting.
It further, further include the first extender lens, first extender lens is arranged in the fly's-eye lens and the height
Between this diffusion sheet.
It further, further include the second extender lens, the optical path of the Gaussian piece is arranged in second extender lens
On.
It further, further include relay lens assemblies, the light of second diverging lens is arranged in the relay lens assemblies
On the road.
A kind of projection light machine system, the projection light machine system include the lighting system.
A kind of laser dissipation spot method, includes the following steps；
A. the light that laser light source issues is become into collimated light beam through optical element；
B. collimated light beam is become into point light source through optical element；
The light for issuing point light source mixes during propagating to Gaussian piece realizes space dissipation spot；
D. mixed light is expanded after boundling using Gaussian piece, the Gaussian piece can determine
One reference planes, and make Gaussian piece do periodic vibration in the reference planes and realize time dissipation spot.
The beneficial effect of technical solution provided by the present invention includes:
Lighting system, the projection light machine system that the present invention obtains by above-mentioned design are in use, the light that laser light source issues
Biggish hot spot is exaggerated to by lens subassembly；Amplified hot spot converges on fly's-eye lens, and convergence, which functions as, puts
Hot spot after big forms multiple point light sources on fly's-eye lens；The light that multiple point light sources issue is mixed in spatial,
Immixture makes stable interference image generate superposition so that the coherence of laser reduces, to realize space dissipation spot.
Due to Gaussian piece can periodic vibration so that different moments light is diffused into different positions by Gaussian piece, thus
The interference image for generating different moments laser is unstable.Since there are eye storage characteristics for human eye, therefore what different moments generated
Unstable interference image (i.e. speckle) can generate synergistic effect at human eye, so that reducing the coherence of laser realizes that the time disappears
Speckle.By the mating reaction of space dissipation spot and time dissipation spot, said lighting system can effectively reduce speckle, weaken it
Influence to picture quality；Above-mentioned projection light machine system uses said lighting system, and therefore, picture quality is higher.
Above-mentioned laser dissipation spot method is exactly based on the mating reaction of space dissipation spot and time dissipation spot to effectively reduce
Speckle, to improve picture quality.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is each optical element arrangement schematic diagram for the lighting system that embodiment of the present invention provides；
Fig. 2 is that the laser that embodiment of the present invention provides forms point light source on fly's-eye lens and mixes in space
Schematic cross-section；
Fig. 3 is the structural schematic diagram for the vibration device that embodiment of the present invention provides.
Icon: the first collimation lens of 1-；The second collimation lens of 2-；3- fly's-eye lens；The first extender lens of 4-；5- second expands
Beam lens；The first relay lens of 6-；The second relay lens of 7-；100- vibration device；110- mounting rack；120- frame；122- pivot
Spindle；130- Power Component；132- motor；134- gear set；136- cam；140- elastic component.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below to protect
The scope of the present invention of shield, but it is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.
In the description of the present invention, it is to be understood that, indicating position or the term of positional relationship are based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the equipment of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be on or below second feature
Directly contacted including the first and second features, also may include the first and second features be not direct contact but by them it
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature second spy
Right above sign and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature second feature it
Under, lower section and fisrt feature included below be directly below and diagonally below the second feature, or be merely representative of first feature horizontal height
Less than second feature.
Embodiment 1:
Such as Fig. 1, present embodiments provide a kind of lighting system, be used in projection light machine system, can effectively weaken or
Eliminate speckle.Said lighting system includes successively spaced laser light source, lens subassembly, fly's-eye lens 3 and Gaussian
Piece；The light that laser light source issues forms multiple point light sources by throwing after lens subassembly on fly's-eye lens 3, sends out from fly's-eye lens 3
Light out mixes in spatial so that interference image (i.e. speckle) generates superposition, to realize space dissipation spot.
Specifically, with continued reference to FIG. 1, the forefront of optical path, lens subassembly, 3 and of fly's-eye lens is arranged in laser light source
The coaxial arrangement of Gaussian piece, that is, be located in same optical path.Lens subassembly includes the first collimation lens 1 of parallel interval setting
With the second collimation lens 2, the light beam issued from laser light source forms flat after the first collimation lens 1 and the second collimation lens 2
Capable light beam, and it is exaggerated to biggish hot spot.Fly's-eye lens 3 is to be combined to be formed by a series of lenslets, saturating from the second collimation
The parallel rays that mirror 2 issues is converged by the sub- eye of fly's-eye lens 3, and multiple point light sources are formed on sub- eye.The light that point light source issues
Continue to propagate along optical path towards Gaussian piece, also, mix in space can be by interference image in sky for the light that issues of point light source
Between it is middle mixing so that Gaussian piece or the surface LCOS etc. formed mix so that weaken laser interference generate speckle.It is mixed
It closes effect and please refers to Fig. 2.
Referring to FIG. 2, compound eye converge the point light source to be formed emit beam in space propagate can cross, in optical path
Picture tells on the right side of effect such as Fig. 2 on section.Due to spatial mixing, multiple point light sources cannot in Gaussian piece or
The surface LCOS forms stable speckle image, to weaken the speckle (space dissipation spot) of laser interference generation.Fly's-eye lens 3 converges
Poly- light is restrained through extender lens 1, is incident upon Gaussian on piece.
In order to further improve dissipation spot effect, lighting system is also provided with vibration device 100, for driving Gaussian
Piece does periodic reverse motion in reference planes；Above-mentioned reference planes be described in Gaussian piece plane.This implementation
In example, vibration device 100 drives Gaussian piece to do linear reciprocating motion.
So that Gaussian piece is in different positions due to periodically moving back and forth, therefore is incident upon Gaussian on piece
Also as diffusion sheet moves inconsistent diffusion effect can occur for light.This diffusion effect not only changes synchronization diffusion sheet
The light path of upper incident ray, and the projected path of different moments light is made to produce variation.Change and enters on synchronization diffusion sheet
The light path for penetrating light facilitates the coherence for eliminating light, to weaken the speckle effect of laser generation.Due to different moments light
Projected path changes, and laser cannot generate stable interference speckle image at multiple moment.Since the persistence of vision of people is special
Property, multiple speckle images can be mixed to weaken laser generation speckle effect (time dissipation spot) in human eye.
Referring to FIG. 3, vibration device 100 includes mounting rack 110, frame 120 and Power Component 130 in the present embodiment；Peace
110 are shelved as frame-type frame like structure, the cage connection with lighting system, and be kept fixed.Frame 120 passes through drive-connecting shaft 122
It is rotatably connected with mounting rack 110, drive-connecting shaft 122 is perpendicular to frame 120 and mounting rack 110.Power Component 130 and mounting rack
110 connections, do rotation by a small margin for driver framework 120 in reference planes.Gaussian piece is connect with frame 120, by
It is 60-100Hz in 130 output frequency of Power Component, amplitude is the vibration of ± 0.5mm, and therefore, frame 120 is around drive-connecting shaft 122
Rotation is similar to move along a straight line.
Specifically, the generally plate structure of mounting rack 110, square hole and groove are provided on mounting rack 110, square hole is used
In installation frame 120.The generally square platy structure of frame 120, the middle part is provided with square holes, for installing Gaussian
Piece.Power Component 130 includes motor 132 and cam 136, and cam 136 is rotatably connected by shaft with mounting rack 110, shaft
It is parallel to the setting of mounting rack 110；Motor 132 is installed in a groove, and is connect by gear set 134 with rotating shaft transmission.
Elastic component 140 is additionally provided on mounting rack 110, the elastic component 140 can apply torque to the frame 120,
So that the frame 120 is abutted with the contoured surface of the cam 136.In the present embodiment, elastic component 140 uses torsional spring.At it
In its embodiment, elastic component 140 can apply torque to frame 120 using extension spring, compressed spring or rubber sleeve etc.
Element.
The working principle of above-mentioned vibration device 100 is as follows:
When 132 output torque of motor, output shaft is rotated by gear set 134 with moving cam 136；Due to the side of frame 120
Side is abutted with the outer profile of cam 136 always, and therefore, under the action of cam 136, frame 120 is done by a small margin around drive-connecting shaft 122
It swings.The swing of frame 120 drives Gaussian piece to swing, and since amplitude of fluctuation is smaller, is similar to move along a straight line.
Further, lighting system further includes the first extender lens 4 and the second extender lens 5, and first extender lens 4 is set
It sets between the fly's-eye lens 3 and the Gaussian piece.The Gaussian piece is arranged in second extender lens 5
In optical path, that is, second extender lens 5 is arranged in behind Gaussian piece, the luminous energy issued from the Gaussian piece
It is enough to be restrained across the second extender lens 5.
In addition, lighting system includes relay lens assemblies well, relay lens assemblies include in the first relay lens 6 and second
After lens 7, the first relay lens 6 is arranged behind the second extender lens 5, and the second relay lens 7 is arranged in the first relay lens 6
Behind.The light issued from the second extender lens 5 passes sequentially through the first relay lens 6 and the second relay lens 7.
It should be noted that in other embodiments, mounting rack 110 is not limited to above structure, as long as can be by power packages
Part 130 and frame 120 are attached；Power Component 130 is also not limited to 136 structure of cam, can also be using vibration electricity
Machine 132 drives frame 120 and Gaussian using vibrating motor 132 for example, being slidably connected frame 120 and mounting rack 110
Piece does straight reciprocating motion in reference planes.
Embodiment 2:
Present embodiments provide a kind of projection light machine system comprising the lighting system of projection system and the offer of embodiment 1,
The laser of sending is projected by projection system and is shown on screen by lighting system.
Embodiment 3:
A kind of laser dissipation spot method is present embodiments provided, which employs the lighting systems that embodiment 1 provides, including with
Lower step:
A. the light that laser light source issues is become into collimated light beam through optical element；Specifically, laser light source is passed through into collimation
Lens are exaggerated to biggish hot spot, and form parallel rays.
B. collimated light beam is become into point light source through optical element；Parallel rays direct projection is formed on fly's-eye lens multiple
Point light source；
The light for issuing point light source mixes during propagating to Gaussian piece realizes space dissipation spot；
D. mixed light is expanded after extender lens boundling using Gaussian piece, the Gaussian piece
It can determine a reference planes, and make Gaussian piece do periodic vibration in the reference planes and realize that the time dissipates
Spot.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of lighting system characterized by comprising
Laser light source；
Lens subassembly, the lens subassembly are arranged in the optical path of the laser light source, for issuing the laser light source
Light becomes collimated light beam；
Fly's-eye lens, the fly's-eye lens are arranged in the optical path of the lens subassembly, are used for so that the lens subassembly issues
Collimated light beam become multiple point light sources；
Gaussian piece, the Gaussian piece are arranged in the optical path of the fly's-eye lens component, for the point light source
The light of sending is diffused；And
Vibration device, the Gaussian piece can determine a reference planes, and the vibration device is for driving the Gauss
Diffusion sheet does periodic vibration in the reference planes.
2. lighting system according to claim 1, it is characterised in that:
The vibration device further includes mounting rack, frame and Power Component；The frame is rotatably connected with the mounting rack, and
It can be rotated in the reference planes；The Gaussian piece is connect with the frame.
3. lighting system according to claim 2, it is characterised in that:
The Power Component includes motor and cam, and the cam is rotatably connected with the mounting rack；The motor with it is described
Cam drive connection；The mounting rack includes elastic component, and the elastic component can apply torque to the frame, so that the frame
Frame is abutted with the contoured surface of the cam.
4. lighting system according to claim 3, it is characterised in that:
The cam is connect with by shaft with the mounting rack, and the motor is connect by gear set with the rotating shaft transmission.
5. lighting system according to claim 1, it is characterised in that: the frequency of the vibration device is 60-100Hz, vibration
Width is ± 0.5mm.
6. lighting system according to claim 1, it is characterised in that:
The lens subassembly includes the first collimation lens and the second collimation lens of relative spacing setting.
7. lighting system according to claim 1, it is characterised in that:
Further include the first extender lens, first extender lens setting the fly's-eye lens and the Gaussian piece it
Between.
8. lighting system according to claim 1, it is characterised in that:
It further include the second extender lens, second extender lens is arranged in the optical path of the Gaussian piece.
9. a kind of projection light machine system, which is characterized in that the projection light machine system includes described in any one of claim 1 to 8
Lighting system.
10. a kind of laser dissipation spot method, which comprises the following steps:
A. the light that laser light source issues is become into collimated light beam through optical element；
B. collimated light beam is become into point light source through optical element；
The light for issuing point light source mixes in communication process realizes space dissipation spot；
D. mixed light is expanded after boundling using Gaussian piece, the Gaussian piece can determine one
Reference planes, and make Gaussian piece do periodic vibration in the reference planes and realize time dissipation spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910137659.4A CN109669315A (en) | 2019-02-25 | 2019-02-25 | Lighting system, projection light machine system and laser dissipation spot method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910137659.4A CN109669315A (en) | 2019-02-25 | 2019-02-25 | Lighting system, projection light machine system and laser dissipation spot method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109669315A true CN109669315A (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910137659.4A Pending CN109669315A (en) | 2019-02-25 | 2019-02-25 | Lighting system, projection light machine system and laser dissipation spot method |
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| CN (1) | CN109669315A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113641063A (en) * | 2021-08-16 | 2021-11-12 | 深圳市火乐科技发展有限公司 | Light uniformizing device, projector optical machine and projector |
| WO2023020165A1 (en) * | 2021-08-16 | 2023-02-23 | 深圳市火乐科技发展有限公司 | Diffusion sheet assembly, beam speckle elimination apparatus, and projector |
-
2019
- 2019-02-25 CN CN201910137659.4A patent/CN109669315A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113641063A (en) * | 2021-08-16 | 2021-11-12 | 深圳市火乐科技发展有限公司 | Light uniformizing device, projector optical machine and projector |
| WO2023020165A1 (en) * | 2021-08-16 | 2023-02-23 | 深圳市火乐科技发展有限公司 | Diffusion sheet assembly, beam speckle elimination apparatus, and projector |
| CN113641063B (en) * | 2021-08-16 | 2023-12-08 | 深圳市火乐科技发展有限公司 | Dodging device, projector optical machine and projector |
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Effective date of registration: 20210305 Address after: 201203 1st floor, building 12, No. 718, Chuansha Road, Pudong New Area, Shanghai Applicant after: Hangzhou Yiting Technology Co.,Ltd. Shanghai Branch Address before: 200120 3rd floor, building 1, 400 Fangchun Road, Shanghai pilot Free Trade Zone, Pudong New Area, Shanghai Applicant before: SHANGHAI BAIZE NETWORK TECHNOLOGY Co.,Ltd. |