CN107193132B - A kind of isocandela light beam splitting dissipation spot method and device based on polarization state modulation - Google Patents
A kind of isocandela light beam splitting dissipation spot method and device based on polarization state modulation Download PDFInfo
- Publication number
- CN107193132B CN107193132B CN201710526903.7A CN201710526903A CN107193132B CN 107193132 B CN107193132 B CN 107193132B CN 201710526903 A CN201710526903 A CN 201710526903A CN 107193132 B CN107193132 B CN 107193132B
- Authority
- CN
- China
- Prior art keywords
- phase delay
- light
- isocandela
- delay device
- modulated phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- 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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
-
- 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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
- Lasers (AREA)
Abstract
A kind of isocandela light beam splitting dissipation spot method and device based on polarization state modulation, is related to the inhibition and decrease of speckle.The present invention solve existing laser lighting light beam regulation method there is technical issues that stability and.The technical solution of the present invention is as follows: a kind of method of the isocandela light beam splitting dissipation spot based on polarization state modulation, wherein: the laser that laser light source issues, by the modulation of isocandela light divided beam system, it is divided into several beam emergent lights, several emergent lights are collected by collective optics, enter lighting system after the even light of shimming device, is finally imaged on the screen, realizes the inhibition of speckle；A kind of isocandela light beam splitting based on polarization state modulation disappears speckle device, in which: the speckle device that disappears is made of laser light source, isocandela light divided beam system, collective optics, shimming device, lighting system and the screen being sequentially arranged.Compared with prior art, the present invention has the advantages that stability and high reliablity, low energy consumption, long service life.
Description
Technical field
The present invention relates to the inhibition of speckle and decreases, it is especially useful in field of laser illumination；It is specially a kind of to be based on polarization state
The isocandela light beam splitting dissipation spot method and device of modulation.
Technical background
The high monochromaticity of laser, when high brightness makes it as lighting source advantageously than conventional light source.But simultaneously
The high coherence of laser also restricts the development of laser lighting.When coherent laser beam is from a rough surface transmission or reflection, thoroughly
Penetrating light or reflected light can interfere in the rough surface.Due to the randomness on surface, interference the result is that light intensity present it is random
Bright dark distribution, this phenomenon is known as speckle.The presence of speckle, makes poor quality images, it is therefore necessary to be suppressed.
Although currently, have it is some the method for light beam modulated by vibration at high speed or rotary part to inhibit speckle, due to
The component of vibration or rotation may be distorted, deform, therefore system the shortcomings that there are stability and poor reliability.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, provides a kind of isocandela light point based on polarization state modulation
Beam dissipation spot method and device, solving existing laser lighting light beam regulation method, there are the technologies of stability and poor reliability to ask
Topic.
The present invention is achieved by the following technical solutions:
A kind of isocandela light beam splitting dissipation spot method based on polarization state modulation, in which: the laser that laser light source issues, warp
The modulation for crossing isocandela light divided beam system is divided into several beam emergent lights, and several emergent lights are collected by collective optics, through shimming
Enter lighting system after the even light of device, is finally imaged on the screen, realizes the inhibition of speckle.
Further, several emergent lights are mutually incoherent and light intensity is equal.
Further, the isocandela light divided beam system is by spatially distributed modulated phase delay device and polarization beam apparatus group
At；Or it is made of spatially distributed modulated phase delay device, polarization beam apparatus and several reflecting mirrors.
Further, the spatially distributed modulated phase delay device is prolonged using the distributed modulated phase of reflective spatial
Slow device；Or use the spatially distributed modulated phase delay device of transmission-type.
A kind of isocandela light beam splitting based on polarization state modulation disappears speckle device, in which: the speckle device that disappears is by sequence
Laser light source, isocandela light divided beam system, collective optics, shimming device, lighting system and the screen composition of setting.
Further, the isocandela light divided beam system is by the distributed modulated phase delay device of reflective spatial and polarization point
Beam device composition, the distributed modulated phase delay device of the reflective spatial and polarization beam apparatus are arranged in parallel.
Further, the distributed modulated phase delay device of the reflective spatial and when the not parallel setting of polarization beam apparatus,
The isocandela light divided beam system is by the distributed modulated phase delay device of reflective spatial, polarization beam apparatus and reflection microscope group
At the reflecting mirror is correspondingly arranged with the polarization beam apparatus, and the distributed modulated phase delay device of the reflective spatial is adopted
It is realized with reflection-type electro-optical modulator or reflection-type magneto-optic modulator or reflection-type acousto-optic modulator.
Further, the isocandela light divided beam system is by the spatially distributed modulated phase delay device of transmission-type, polarization point
Beam device and reflecting mirror composition, the spatially distributed modulated phase delay device of the transmission-type and polarization beam apparatus are arranged in parallel, institute
State the spatially distributed modulated phase delay device of transmission-type using reflection-type electro-optical modulator or reflection-type magneto-optic modulator or
Reflection-type acousto-optic modulator is realized.
Further, the spatially distributed modulated phase delay device of the transmission-type and when the not parallel setting of polarization beam apparatus,
The isocandela light divided beam system is by the spatially distributed modulated phase delay device of transmission-type, polarization beam apparatus and multiple reflecting mirrors
Composition, multiple reflecting mirrors are correspondingly arranged with the polarization beam apparatus different angle, and the transmission-type is spatially distributed adjustable
Phase delay device processed is realized using reflection-type electro-optical modulator or reflection-type magneto-optic modulator or reflection-type acousto-optic modulator.
Further, incoming laser beam can be modulated to that several Shu Guangqiang are equal and mutual not phase by the isocandela light divided beam system
Dry beam exit.
The present invention modulates light beam by using static spatially distributed modulated phase delay device and polarization beam apparatus, real
The inhibition of existing speckle.The present invention with by vibration at high speed, compare by the speckle suppressing method of rotary device, with stability and reliably
Property it is high, low energy consumption, long service life the advantages of.
Detailed description of the invention
Fig. 1 is that a kind of isocandela light beam splitting of reflective polarizing state modulation disappears the specific implementation schematic diagram of speckle device, instead
The spatially distributed modulated phase delay device of emitting is parallel with polarization beam apparatus.
Fig. 2 is that a kind of isocandela light beam splitting of reflective polarizing state modulation disappears the specific implementation schematic diagram of speckle device, instead
The spatially distributed modulated phase delay device of emitting and polarization beam apparatus are not parallel, and this example angle is 45 degree.
Fig. 3 is that a kind of isocandela light beam splitting of transmission-type polarization state modulation disappears the specific implementation schematic diagram of speckle device, thoroughly
The spatially distributed modulated phase delay device of emitting is parallel with polarization beam apparatus.
Fig. 4 is that a kind of isocandela light beam splitting of transmission-type polarization state modulation disappears the specific implementation schematic diagram of speckle device, thoroughly
The spatially distributed modulated phase delay device of emitting and polarization beam apparatus are not parallel, and this example angle is 45 degree.
In figure: 1- laser light source, the spatially distributed modulated phase delay device of 2-, 2.1- reflective spatial distribution is adjustable
Phase delay device processed, the spatially distributed modulated phase delay device of 2.2- transmission-type, 3- polarization beam apparatus, 4- collective optics, 5-
Shimming device, 6- lighting system, 7- screen, 8- reflecting mirror, the first reflecting mirror of 8.1-, the second reflecting mirror of 8.2-, 9.1- first go out
Irradiating light beam, the second outgoing beam of 9.2-, the n-th outgoing beam of 9.n-.
Specific embodiment
Clear, complete description is carried out to technical solution of the present invention below in conjunction with drawings and examples.
Embodiment 1
The speckle device as shown in Figure 1, a kind of isocandela light beam splitting based on polarization state modulation disappears, by laser light source 1, reflection
The spatially distributed modulated phase delay device 2.1 of type, polarization beam apparatus 3, collective optics 4, shimming device 5, lighting system 6 and screen
Curtain 7 forms, and the distributed modulated phase delay device 2.1 of reflective spatial is parallel with polarization beam apparatus 3.
The laser beam that laser light source 1 issues reaches the distributed modulated phase delay device 2.1 of reflective spatial and retrodeviates polarization state
It is modulated, modulated light beam is incident on polarization beam apparatus 3, and polarization beam apparatus 3 has the linear polarization of reflection direction one
Light transmits the property of the linearly polarized light of the polarization direction two vertical with polarization direction one, therefore some light transmission is gone out, part light
The distributed modulated phase delay device 2.1 of reflective spatial is reflected and arrived again at, the mistake of polarization state modulation, light splitting is repeatedly carried out
Journey obtains several outgoing beam 9.1~9.n, several 9.1~9.n of outgoing beam being spatially separating after polarization beam apparatus 3
It is collected by collective optics 4, through the even light of shimming device 5, is finally imaged on screen 7 using lighting system 6.Due on screen 7
There are several independent speckle fields, and the inhibition of speckle may be implemented.
To realize optimal speckle inhibitory effect, several 9.1~9.n of outgoing beam answer mutually incoherent.If laser light
It is α, reflective spatial point that source 1, which issues light beam and is incident on the incidence angle of the distributed modulated phase delay device 2.1 of reflective spatial,
The modulated phase delay device 2.1 of cloth is d at a distance from polarization beam apparatus 3, and the coherence length of laser light source 1 is Lc, should meet
Condition 2*d/cos α >=Lc。
To realize optimal speckle inhibitory effect, several 9.1~9.n of outgoing beam light intensity are answered equal.Because system is deposited
In all kinds of losses, energy loss can not be may be not present in whole incident laser energy n equal portions.Below to illustrate such as the case where n=3
What obtains that 3 parts of light intensity are equal and maximum emergent light, has similar operating method for the case where n > 3.
First outgoing beam 9.1 is projected by the region A of the distributed modulated phase delay device 2.1 of reflective spatial, and second
Outgoing beam 9.2 is projected by the region B of the distributed modulated phase delay device 2.1 of reflective spatial, third outgoing beam 9.3 by
The region C of the distributed modulated phase delay device 2.1 of reflective spatial is projected.Change region A respectively, the phase-delay quantity of B, C,
The first outgoing beam 9.1, the second outgoing beam 9.2, the light intensity of third outgoing beam 9.3 can be changed respectively.
The phase-delay quantity for traversing region A, obtains the light intensity curve of the first outgoing beam 9.1.Maximizing on curve
I1maxWith minimum value I1min.A phase-delay quantity in setting area makes 9.1 light intensity of the first outgoing beam be in minimum value I later1min；
The phase-delay quantity for traversing region B, obtains the light intensity curve of the second outgoing beam 9.2.Maximizing on curve
I2maxWith minimum value I2min.The phase-delay quantity of setting area B makes 9.2 light intensity of the second outgoing beam be in minimum value I later2min；
The phase-delay quantity for traversing region C, obtains the light intensity curve of third outgoing beam 9.3.Maximizing on curve
I3max；
Determine two parameters,
Equation group is established,
I in formula1,I2,I3Respectively transmit the first outgoing beam 9.1, the second outgoing beam 9.2 and third outgoing beam 9.3
Light intensity, T1For the transmittance for transmiting the first outgoing beam 9.1, T2For the transmittance for transmiting the second outgoing beam 9.2.
Solving equations obtain
Light intensity I is found on the light intensity curve of the first outgoing beam 9.11Corresponding phase-delay quantity is determined as region A's
Phase-delay quantity.The phase-delay quantity for traversing region B later, finding 9.2 light intensity of the second outgoing beam is I1Corresponding phase is prolonged
It measures and determines late.The phase-delay quantity for traversing region C later, finding 9.3 light intensity of third outgoing beam is I1Corresponding phase is prolonged
It measures and determines late.So far, the transmitted light beam of 3 beam isocandelas is obtained.
Embodiment 2
The speckle device as shown in Fig. 2, a kind of isocandela light beam splitting based on polarization state modulation disappears, by laser light source 1, reflection
The spatially distributed modulated phase delay device 2.1 of type, polarization beam apparatus 3, collective optics 4, shimming device 5, lighting system 6, screen
Curtain 7 and reflecting mirror 8 form.The distributed modulated phase delay device 2.1 of reflective spatial and polarization beam apparatus 3 are not parallel, this example
Angle is 45 degree.
Laser light source 1 issues the linearly polarized laser beam of polarization direction one, skims over the reflection of 3 directive of polarization beam apparatus with low-angle
Mirror 8 is further reflected on polarization beam apparatus 3；The polarization beam apparatus 3 has the linearly polarized light of reflection direction one and saturating
The property of the linearly polarized light of the polarization direction two vertical with polarization direction one is penetrated, therefore, light is reflected to reflective spatial distribution
The a certain region of the modulated phase delay device 2.1 of formula, the polarization state of light is by modulation back reflection to polarization beam apparatus 3；Part at this time
Light becomes outgoing beam 9.1 through polarization beam apparatus 3, and part light is reflected into reflecting mirror 8 by polarization beam apparatus 3 and is reflected back polarization
Beam splitter 3；
Light beam repeatedly carried out between the distributed modulated phase delay device 2.1 of reflective spatial and polarization beam apparatus 3 with
Upper polarization state modulation, spectroscopic processes obtain several 9.2~9.n of outgoing beam；9.1~9.n of outgoing beam is collected with collective optics 4
Again by the even light of shimming device 5, the inhibition of speckle is ultimately imaged in screen 7 and realized into lighting system 6.
To realize optimal speckle inhibitory effect, several 9.1~9.n of outgoing beam answer mutually incoherent.If light beam from
The light path of reflective spatial distributed modulated phase delay device 2.1 to polarization beam apparatus 3 is a, light beam from polarization beam apparatus 3 to
The light path of reflecting mirror 8 is b, and the coherence length of laser light source 1 is Lc, 2* (a+b) >=L should be metcThe then mutual not phase of several transmitted light beams
It is dry.
To realize that optimal speckle inhibitory effect, the light intensity of several 9.1~9.n of outgoing beam need equal.Realization side
Method is same as Example 1.
Embodiment 3
The speckle device as shown in figure 3, a kind of isocandela light beam splitting based on polarization state modulation disappears, by laser light source 1, transmission
The spatially distributed modulated phase delay device 2.2 of type, polarization beam apparatus 3, collective optics 4, shimming device 5, lighting system 6, screen
Curtain 7 and reflecting mirror 8 form.The spatially distributed modulated phase delay device 2.2 of transmission-type is parallel with polarization beam apparatus 3.
The light beam that laser light source 1 issues, which is incident on first on the spatially distributed modulated phase delay device 2.2 of transmission-type, to pass through
It is emitted again after polarization state modulation, outgoing beam reaches polarization beam apparatus 3；The polarization beam apparatus 3 has reflection direction one
Linearly polarized light and transmit the property of the linearly polarized light of the polarization direction two vertical with polarization direction one, therefore some light transmission at
For outgoing beam 9.1, portion's dichroic reflection, after part reflected light penetrates the spatially distributed modulated phase delay device 2.2 of transmission-type
By the reflection of reflecting mirror 8 arrive again at the spatially distributed modulated phase delay device 2.2 of transmission-type realize polarization state modulation more times,
The process of light splitting will finally obtain several 9.1~9.n of emergent light after polarization beam apparatus 3, and several emergent lights are by optically focused member
Part 4 is collected, and by entering back into lighting system 6 after the even light of shimming device 5, is ultimately imaged and is realized the inhibition of speckle in screen 7.
To realize optimal speckle inhibitory effect, several 9.1~9.n of outgoing beam answer mutually incoherent.If laser light
The incidence angle that the light beam that source issues is incident on the spatially distributed modulated phase delay device 2.2 of transmission-type is α, and reflecting mirror 8 is to partially
The distance of vibration beam splitter 3 is d.2*d/cos α >=L should be metcKeep several outgoing beams mutually incoherent.
Further, the speckle inhibitory effect optimal for realization, the light intensity of several 9.1~9.n of outgoing beam need phase
Deng.Implementation method is same as Example 1.
Embodiment 4
The speckle device as shown in figure 4, a kind of isocandela light beam splitting based on polarization state modulation disappears, by laser light source 1, transmission
The spatially distributed modulated phase delay device 2.2 of type, polarization beam apparatus 3, collective optics 4, shimming device 5, lighting system 6, screen
The 7, first reflecting mirror 8.1 of curtain and the second reflecting mirror 8.2 composition.The spatially distributed modulated phase delay device 2.2 of transmission-type with partially
Shaking, beam splitter 3 is not parallel, and this example angle is 45 degree.
Laser light source 1 issues the linearly polarized laser beam of polarization direction one, skims over 3 directive first of polarization beam apparatus with low-angle
Reflecting mirror 8.1 is further reflected on polarization beam apparatus 3；The polarization beam apparatus 3 has the linear polarization of reflection direction one
Light and the property for transmiting the linearly polarized light of the polarization direction two vertical with polarization direction one, therefore, light is reflected by polarization beam apparatus 3
And through a certain region of the spatially distributed modulated phase delay device 2.2 of transmission-type, the polarization state with the time is modulated.Transmission
Light reaches polarization point after being again passed through the spatially distributed modulated phase delay device 2.2 of transmission-type by the reflection of the second reflecting mirror 8.2
Beam device 3；Part light becomes outgoing beam 9.1 through polarization beam apparatus 3 at this time, and part light is reflected into first by polarization beam apparatus 3
Reflecting mirror 8.1 is reflected back polarization beam apparatus 3 again；Light beam is in the spatially distributed modulated phase delay device 2.2 of transmission-type and polarization
Polarization state modulation is repeatedly carried out between beam splitter 3, the process of light splitting finally generates more outgoing beams after polarization beam apparatus 3
9.2~9.n.
To realize optimal speckle inhibitory effect, several 9.1~9.n of outgoing beam answer mutually incoherent.If light beam from
The light path of first reflecting mirror 8.1 to polarization beam apparatus 3 is a, is b from the light path of the 3 to the second reflecting mirror of polarization beam apparatus 8.2, answers
Meet 2* (a+b) >=LcThen several outgoing beams are mutually incoherent.
To realize that optimal speckle inhibitory effect, the light intensity of several 9.1~9.n of outgoing beam need equal.Realization side
Method is same as Example 1.
The present invention can be embodied in a variety of forms without departing from the spirit and scope of the present invention, it should be understood that above-mentioned
Embodiment is not limited to details above-mentioned, and should widely explain in claim limited range.It should be pointed out that for this
For the those of ordinary skill of technical field, without departing from the structure of the invention, it can also make several improvements and wait
The variation in range is imitated, such modifications and variations also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of isocandela light beam splitting dissipation spot method based on polarization state modulation, it is characterised in that: what laser light source (1) issued
Laser is divided into several beam emergent lights, several emergent lights are by collective optics (4) by the modulation of isocandela light divided beam system
It collects, enters lighting system (6) after shimming device (5) even light, be finally imaged on screen (7), realize the inhibition of speckle；Institute
It states isocandela light divided beam system to be made of spatially distributed modulated phase delay device (2) and polarization beam apparatus (3), or by space
Distributed modulated phase delay device (2), polarization beam apparatus (3) and several reflecting mirrors (8) composition.
2. the isocandela light beam splitting dissipation spot method according to claim 1 based on polarization state modulation, it is characterised in that: if
Do that the emergent light is mutually incoherent and light intensity is equal.
3. the isocandela light beam splitting dissipation spot method according to claim 1 based on polarization state modulation, it is characterised in that: institute
Spatially distributed modulated phase delay device (2) is stated using the distributed modulated phase delay device (2.1) of reflective spatial；Or it adopts
With the spatially distributed modulated phase delay device (2.2) of transmission-type.
4. a kind of isocandela light beam splitting based on polarization state modulation disappears speckle device, it is characterised in that: it is described disappear speckle device by
Sequence setting laser light source (1), isocandela light divided beam system, collective optics (4), shimming device (5), lighting system (6) and
Screen (7) composition；The isocandela light divided beam system is by spatially distributed modulated phase delay device (2) and polarization beam apparatus
(3) it forms, or is made of spatially distributed modulated phase delay device (2), polarization beam apparatus (3) and several reflecting mirrors (8).
The speckle device 5. the isocandela light beam splitting according to claim 4 based on polarization state modulation disappears, it is characterised in that: institute
Isocandela light divided beam system is stated to be made of the distributed modulated phase delay device (2.1) of reflective spatial and polarization beam apparatus (3),
The distributed modulated phase delay device (2.1) of the reflective spatial and polarization beam apparatus (3) are arranged in parallel.
The speckle device 6. the isocandela light beam splitting according to claim 5 based on polarization state modulation disappears, it is characterised in that: institute
When stating the distributed modulated phase delay device (2.1) of reflective spatial and polarization beam apparatus (3) not parallel setting, the isocandela
Light divided beam system is by the distributed modulated phase delay device (2.1) of reflective spatial, polarization beam apparatus (3) and reflecting mirror (8) group
At the reflecting mirror (8) is correspondingly arranged with the polarization beam apparatus (3), and the distributed modulated phase of the reflective spatial is prolonged
Slow device (2.1) is realized using reflection-type electro-optical modulator or reflection-type magneto-optic modulator or reflection-type acousto-optic modulator.
The speckle device 7. the isocandela light beam splitting according to claim 4 based on polarization state modulation disappears, it is characterised in that: institute
Isocandela light divided beam system is stated by the spatially distributed modulated phase delay device (2.2) of transmission-type, polarization beam apparatus (3) and reflection
Mirror (8) composition, the spatially distributed modulated phase delay device (2.2) of the transmission-type and polarization beam apparatus (3) are arranged in parallel, institute
The spatially distributed modulated phase delay device (2.2) of transmission-type is stated using reflection-type electro-optical modulator or reflection-type magneto-optic modulation
Device or reflection-type acousto-optic modulator are realized.
The speckle device 8. the isocandela light beam splitting according to claim 7 based on polarization state modulation disappears, it is characterised in that: institute
When stating the spatially distributed modulated phase delay device (2.2) of transmission-type and polarization beam apparatus (3) not parallel setting, the isocandela
Light divided beam system is by the spatially distributed modulated phase delay device (2.2) of transmission-type, polarization beam apparatus (3) and multiple reflecting mirrors
(8) it forms, multiple reflecting mirrors (8) are correspondingly arranged with the polarization beam apparatus (3) different angle, the transmission-type space point
The modulated phase delay device of cloth (2.2) is using reflection-type electro-optical modulator or reflection-type magneto-optic modulator or reflection-type acousto-optic
Modulator is realized.
9. disappeared speckle device according to any isocandela light beam splitting based on polarization state modulation of claim 5~8, feature
Be: incoming laser beam can be modulated to the equal and mutually incoherent light beam of several Shu Guangqiang and gone out by the isocandela light divided beam system
It penetrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710526903.7A CN107193132B (en) | 2017-06-30 | 2017-06-30 | A kind of isocandela light beam splitting dissipation spot method and device based on polarization state modulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710526903.7A CN107193132B (en) | 2017-06-30 | 2017-06-30 | A kind of isocandela light beam splitting dissipation spot method and device based on polarization state modulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107193132A CN107193132A (en) | 2017-09-22 |
| CN107193132B true CN107193132B (en) | 2019-09-24 |
Family
ID=59881749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710526903.7A Active CN107193132B (en) | 2017-06-30 | 2017-06-30 | A kind of isocandela light beam splitting dissipation spot method and device based on polarization state modulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107193132B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207457625U (en) * | 2017-11-22 | 2018-06-05 | 歌尔科技有限公司 | Disappear speckle device, laser light source and laser projection system |
| CN109270763B (en) * | 2018-10-23 | 2020-05-19 | 华中科技大学 | Light beam homogenizer based on acousto-optic deflection |
| CN110609394A (en) * | 2019-10-17 | 2019-12-24 | 杭州中科极光科技有限公司 | Laser speckle eliminating device and projection system |
| CN112255816B (en) * | 2020-11-04 | 2022-08-30 | 合肥工业大学 | Speckle suppression and focal depth expansion device based on angle diversity |
| CN113376856B (en) * | 2021-06-21 | 2023-03-21 | 山西大学 | Time domain and space domain combined speckle suppression device based on segmented light modulation and manufacturing method |
| CN113900268B (en) * | 2021-10-19 | 2023-05-09 | 山西大学 | Speckle suppression device and manufacturing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204945506U (en) * | 2015-10-09 | 2016-01-06 | 杭州虹视科技有限公司 | The laser aid of dissipation spot, laser display system and laser projection system |
| CN106033148A (en) * | 2015-03-20 | 2016-10-19 | 中兴通讯股份有限公司 | Laser speckle inhibition method and device |
-
2017
- 2017-06-30 CN CN201710526903.7A patent/CN107193132B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033148A (en) * | 2015-03-20 | 2016-10-19 | 中兴通讯股份有限公司 | Laser speckle inhibition method and device |
| CN204945506U (en) * | 2015-10-09 | 2016-01-06 | 杭州虹视科技有限公司 | The laser aid of dissipation spot, laser display system and laser projection system |
Non-Patent Citations (1)
| Title |
|---|
| 激光光束非相干叠加对散斑噪声抑制情况;邓慧等;《光学学报》;20160131;第36卷(第1期);第0129002-1~0129002-7页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107193132A (en) | 2017-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107193132B (en) | A kind of isocandela light beam splitting dissipation spot method and device based on polarization state modulation | |
| US10174894B2 (en) | Vehicle headlamp unit and vehicle headlamp system | |
| EP1274257B1 (en) | Polarised light recuperation method and apparatus | |
| US5748376A (en) | High optical throughput liquid-crystal projection display system | |
| CN107024763B (en) | Dual-channel structured light digital phase contrast microscopic imaging system and implementation method thereof | |
| CN107870503A (en) | Lighting device and projecting apparatus | |
| US10704754B2 (en) | Vehicle lamp system based on PBS (polarization beam splitter) | |
| CN102147562A (en) | Light source, illumination device, display device, display projector and projection display device | |
| JP6043228B2 (en) | Optical module and light irradiation device | |
| CN106842605A (en) | Light-dividing device based on polarization spectroscope | |
| WO2014162926A1 (en) | Optical module and observation device | |
| CN106291962B (en) | Structure light generating means and method based on polarization light phase modulation | |
| WO2007112259A2 (en) | System and method for laser speckle reduction | |
| CN103597816A (en) | Apparatus and method for combining laser beams of different polarization | |
| WO2016189871A1 (en) | Light source unit and projection device | |
| CN112987471A (en) | Multicolor light source and projection apparatus | |
| CN206671690U (en) | Light-dividing device based on polarization spectroscope | |
| WO2016150095A1 (en) | Method and device for inhibiting laser speckles | |
| CN106918921A (en) | A kind of laser display based on fly's-eye lens is polarized shimming apparatus for shaping | |
| KR20000073448A (en) | Reflection type color projector | |
| US11550135B2 (en) | Optical arrangement and method for light beam shaping for a light microscope | |
| CN113589635A (en) | Illumination system and projection device | |
| JP6014538B2 (en) | Optical module, light observation device, and light irradiation device | |
| CN100587588C (en) | Illuminator and projector | |
| KR102205893B1 (en) | In-line scanning holography system for fluorescence object and transmissive object |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200119 Address after: 030006 Taiyuan City, Shanxi province city road, No. 92 Patentee after: Shanxi Univeristy Address before: 030006 Taiyuan, Xiaodian District, Shanxi City Road, No. 92 Co-patentee before: Suzhou Academy of Xi'an Jiaotong University Patentee before: Shanxi Univeristy |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201019 Address after: 030006 No.3 workshop, No.51 Zhengyang Street, Taiyuan demonstration zone, Shanxi Province Patentee after: Shanxi Hanwei laser Polytron Technologies Inc. Address before: 030006 Taiyuan City, Shanxi province city road, No. 92 Patentee before: Shanxi University |
|
| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method and device of equal intensity beam splitting and speckle elimination based on polarization state modulation Effective date of registration: 20210617 Granted publication date: 20190924 Pledgee: Shanxi Financing Guarantee Co.,Ltd. Pledgor: Shanxi Hanwei laser Polytron Technologies Inc. Registration number: Y2021140000016 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |