CN109633892A - One kind is ultraviolet, visible, three wave band of near-infrared is total to road optical system - Google Patents
One kind is ultraviolet, visible, three wave band of near-infrared is total to road optical system Download PDFInfo
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- CN109633892A CN109633892A CN201910097561.0A CN201910097561A CN109633892A CN 109633892 A CN109633892 A CN 109633892A CN 201910097561 A CN201910097561 A CN 201910097561A CN 109633892 A CN109633892 A CN 109633892A
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- lens
- wave band
- ultraviolet
- visible
- meniscus
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- 230000003287 optical effect Effects 0.000 title claims abstract description 61
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000001914 filtration Methods 0.000 claims abstract description 21
- 230000005499 meniscus Effects 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 3
- 239000005350 fused silica glass Substances 0.000 claims description 3
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 3
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 3
- 230000008450 motivation Effects 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 25
- 238000013461 design Methods 0.000 abstract description 7
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 6
- 230000004927 fusion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000009738 saturating Methods 0.000 description 3
- 238000000701 chemical imaging Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000003333 near-infrared imaging Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
- G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/008—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
- G02B13/143—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation for use with ultraviolet radiation
Abstract
The invention discloses a kind of ultraviolet, visible, three wave bands of near-infrared to be total to road optical system, filtering mechanism is located at three wave band camera lens emergent light sides, filtering mechanism includes bracket, mounting disc, multiple optical filters, bracket is equipped with the shaft for being parallel to the axis arrangement of three wave band camera lenses, mounting disc may be rotatably mounted on bracket by the shaft, multiple optical filters surround the shaft circumferentially in mounting disc, and driving mechanism is connect with mounting disc for driving mounting disc to rotate.Road optical system is total to by ultraviolet, visible, three wave band of near-infrared of above-mentioned optimization design, three wave band camera lenses carry out enhanced modulation to three band of light, by being rotatablely installed disk, realize the switching of multiple optical filters, so that modulated light beam is filtered as needed, ultraviolet band image, visible images, near infrared band image and all band image are formed, to obtain the imaging of three band images.
Description
Technical field
The present invention relates to optical engineering optical lens design fields, more particularly to a kind of ultraviolet, visible, three wave band of near-infrared
Road optical system altogether.
Background technique
In recent years, UAV electro-optical's imaging system by itself high-resolution, high real-time, maneuverability, it is at low cost, grind
The advantages such as the period processed is short, risk is small have received widespread attention, geological exploration, vegetation study, soil investigation, precision agriculture,
Forest fire protection, forestry generaI investigation, Atmospheric Survey, petroleum pipeline monitoring, traffic monitoring, urban planning, disaster alarm, emergency response,
The fields such as field search and rescue are widely applied.The effect of photo electric imaging system is gone forward side by side primarily with respect to detection target blur-free imaging
Row accurately identifies, and can be divided into ultraviolet imagery system, Visible imaging system, near infrared imaging according to optical wavelength difference used is imaged
System etc..Wherein, it is seen that photoimaging systems are most widely used, and imaging resolution is apparently higher than ultraviolet and near infrared imaging system
System, but be limited only to detection identification high-contrast objects, for low-light or low contrast target imaging far away from other waves
Section optical system.Complementary in order to carry out to the imaging performance between different-waveband, multi-spectrum fusion photoelectronic imaging equipment is increasingly
It is taken seriously.By means of multispectral imaging characteristic, multi-spectrum fusion photoelectronic imaging equipment being capable of effective environment-identification Temperature Distribution
Identification verification is carried out to hiding target, the personnel equipment's positioning for being particularly suitable for the regions such as marine, disaster area and thick forest and field are searched
It rescues.Optical system is the core devices of multi-spectrum fusion photoelectronic imaging equipment, since ultraviolet, visible, near infrared band wavelength is each
Different, general optical system can not meet three equal blur-free imagings of wave band simultaneously, therefore traditional multi-spectrum fusion photoelectronic imaging is set
It is standby often individually to use different optical systems for different-waveband, the volume and weight of imaging device are considerably increased, nothing is given
Man-machine carrying brings difficulty.When common photo electric imaging system carries out multispectral imaging to same target, it is easy to lead to difference
Optical axis between spectrum not can guarantee the consistent imaging effect to same target there are deviation.In order to guarantee that optoelectronic device obtains
The consistency of more levels, different characteristic target information, enhances the real-time of system, and research and development can be for ultraviolet, visible, close red
The optical system of outer three wave band while blur-free imaging, becomes the key of unmanned plane multi-spectrum fusion photo electric imaging system.But it should
Class Optical System Design will take into account the image quality of three wave bands, and the optical material for being operable with this wave band is few, therefore
This system optical design is difficult.
Summary of the invention
To solve technical problem present in background technique, the present invention proposes that a kind of ultraviolet, visible, three wave band of near-infrared is total to
Road optical system.
One kind proposed by the present invention is ultraviolet, visible, three wave band of near-infrared is total to road optical system, comprising: three wave band camera lenses, filter
Ray machine structure, driving mechanism；
Filtering mechanism is located at three wave band camera lens emergent light sides, and filtering mechanism includes bracket, mounting disc, multiple optical filters,
Bracket is equipped with the shaft for being parallel to the axis arrangement of three wave band camera lenses, and mounting disc may be rotatably mounted at bracket by the shaft
On, multiple optical filters surround the shaft circumferentially in mounting disc, and driving mechanism is connect for driving peace with mounting disc
Sabot rotation.
Preferably, mounting disc is equipped with circumferential four mounting holes, and filtering mechanism includes being separately mounted to three
Ultraviolet filter, visible filter and near infrared filter in mounting hole.
Preferably, driving mechanism includes driving motor and driving gear, and driving motor is located at mounting disc side, drives gear
It is mounted in the drive shaft of driving motor, mounting disc periphery is equipped with the outer toothed portion engaged with driving gear.
Preferably, three wave band camera lenses include the first meniscus set gradually to close mounting disc direction, the second convex-concave
It is lens, third meniscus, the first biconcave lens, the first biconvex lens, the first concave-convex lens, the second biconvex lens, the 4th convex
Concavees lens, the 5th meniscus, the 6th meniscus, the 7th meniscus, third biconvex lens, the second concave-convex lens, second
Biconcave lens.
Preferably, the first meniscus, third meniscus, the 4th meniscus, the 5th meniscus, the 6th convex-concave are saturating
Mirror, third biconvex lens, the second biconcave lens are all made of fused quartz material and are made.
Preferably, the second meniscus, the first biconcave lens, the first biconvex lens, the first concave-convex lens, the 7th convex-concave are saturating
Mirror, the second concave-convex lens are all made of calcium fluoride material and are made.
Preferably, the second biconvex lens is made of magnesium fluoride material.
Preferably, three wave band camera lenses further include aperture diaphragm, and aperture diaphragm is located at third meniscus and the first concave-concave is saturating
Between mirror.
Preferably, the 6th meniscus, the 7th meniscus and third biconvex lens are successively bonded.
Preferably, the exit facet of the first biconcave lens is bonded with the plane of incidence of the first biconvex lens.
In the present invention, ultraviolet, visible, three wave band of near-infrared proposed is total to road optical system, and filtering mechanism is located at three waves
Duan Jingtou emergent light side, filtering mechanism include bracket, mounting disc, multiple optical filters, and bracket is equipped with and is parallel to three wave band mirrors
The shaft of the axis arrangement of head, mounting disc may be rotatably mounted on bracket by the shaft, and multiple optical filters are in mounting disc
Circumferentially around the shaft, driving mechanism is connect with mounting disc for driving mounting disc to rotate.It is set by above-mentioned optimization
Ultraviolet, visible, three wave band of near-infrared of meter are total to road optical system, and three wave band camera lenses carry out enhanced modulation to three band of light, pass through
It is rotatablely installed disk, realizes the switching of multiple optical filters, so that modulated light beam filters as needed, forms ultraviolet band
Image, visible images, near infrared band image and all band image, to obtain the imaging of three band images.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that one kind proposed by the present invention is ultraviolet, visible, three wave band of near-infrared is total to road optical system.
Fig. 2 is the vertical view for the mounting disc that one kind proposed by the present invention is ultraviolet, visible, three wave band of near-infrared is total to road optical system
Structural schematic diagram.
Fig. 3 is the three wave band camera lenses that one kind proposed by the present invention is ultraviolet, visible, three wave band of near-infrared is total to road optical system
Structural schematic diagram.
Specific embodiment
As shown in Figures 1 to 3, for one kind proposed by the present invention, ultraviolet, visible, three wave band of near-infrared is total to road optical system to Fig. 1
Structural schematic diagram, Fig. 2 is one kind proposed by the present invention is ultraviolet, visible, three wave band of near-infrared is total to road optical system mounting disc
Overlooking structure diagram, Fig. 3 is that one kind proposed by the present invention is ultraviolet, visible, three wave band of near-infrared is total to the three of road optical system
The structural schematic diagram of wave band camera lens.
Referring to Fig.1 with 2, one kind proposed by the present invention is ultraviolet, visible, three wave band of near-infrared is total to road optical system, comprising: three
Wave band camera lens, filtering mechanism, driving mechanism；
Filtering mechanism is located at three wave band camera lens emergent light sides, and filtering mechanism includes bracket 20, mounting disc 21, multiple optical filterings
Piece 22, bracket 20 are equipped with the shaft for being parallel to the axis arrangement of three wave band camera lenses, and mounting disc 21 can be rotated by the shaft
It is mounted on bracket 20, multiple optical filters 22 surround the shaft circumferentially in mounting disc 21, driving mechanism and installation
The connection of disk 2 is for driving mounting disc 21 to rotate.
Ultraviolet, visible, three wave band of near-infrared of the present embodiment are total in the specific work process of road optical system, and light is from three
Side of the wave band camera lens far from filtering mechanism is incident, after three wave band camera lens enhanced modulations, by filtering mechanism, passes through installation
The rotation of disk, the optical filter for selecting emergent light to pass through as needed, to realize the imaging of corresponding band image.
In the present embodiment, ultraviolet, visible, three wave band of near-infrared proposed is total to road optical system, and filtering mechanism is located at
Three wave band camera lens emergent light sides, filtering mechanism include bracket, mounting disc, multiple optical filters, and bracket is equipped with and is parallel to three waves
The shaft of the axis arrangement of Duan Jingtou, mounting disc may be rotatably mounted on bracket by the shaft, and multiple optical filters are being installed
On disk circumferentially around the shaft, driving mechanism is connect with mounting disc for driving mounting disc to rotate.By above-mentioned excellent
Ultraviolet, visible, three wave band of near-infrared for changing design are total to road optical system, and three wave band camera lenses carry out enhanced modulation to three band of light,
By being rotatablely installed disk, realizes the switching of multiple optical filters, so that modulated light beam filters as needed, formed ultraviolet
Band image, visible images, near infrared band image and all band image, to obtain the imaging of three band images.
In the specific embodiment of mounting disc, mounting disc 21 is equipped with circumferential four mounting holes, optical filtering machine
Structure includes the ultraviolet filter, visible filter and near infrared filter being separately mounted in three mounting holes；Driving mechanism
Disc spins are installed by driving, need to select optical filter according to imaging, so that being ultimately imaged ultraviolet band image, visible
Light image, near infrared band image and all band image.
In the specific design method of driving mechanism, driving mechanism includes driving motor 30 and driving gear 31, driving electricity
Machine 30 is located at 21 side of mounting disc, and driving gear 31 is mounted in the drive shaft of driving motor 30,21 periphery of mounting disc be equipped with
The outer toothed portion for driving gear 31 to engage, driving motor are rotated by sliding tooth wheel, are driven mounting disc rotation, are filtered as needed
The switching of mating plate.
Referring to Fig. 3, in the specific set-up mode of three wave band camera lenses, three wave band camera lenses include to close to 21 direction of mounting disc
The first meniscus 1, the second meniscus 2, third meniscus 3, the first biconcave lens 5, the first lenticular set gradually
Mirror 6, the first concave-convex lens 7, the second biconvex lens 8, the 4th meniscus 9, the 5th meniscus 10, the 6th meniscus 11,
7th meniscus 12, third biconvex lens 13, the second concave-convex lens 14, the second biconcave lens 15；By to three wave band camera lenses
The optimum choice and arrangement of middle lens guarantee that camera lens modulates the optimization of three band of light, realize it is ultraviolet, visible, near-infrared three
Wave band while blur-free imaging；Wherein, the first meniscus 1, the second meniscus 2, the second biconvex lens 8 and the second concave-convex lens
14 plane of incidence uses aspheric design, for reducing three wave band imaging aberrations, guarantees that three wave bands image in camera photosurface.
In the material selection of lens, the first meniscus 1, third meniscus 3, the 4th meniscus 9, the 5th convex-concave
Lens 10, the 6th meniscus 11, third biconvex lens 13, the second biconcave lens 15 are all made of fused quartz material and are made；
Second meniscus 2, the first biconcave lens 5, the first biconvex lens 6, the first concave-convex lens 7, the 7th meniscus
12, the second concave-convex lens 14 is all made of calcium fluoride material and is made；
Second biconvex lens 8 is made of magnesium fluoride material.
It is in optimized selection by the material to each lens, guarantees the high conduction efficiency of each wave band optical path, thus into one
Step ensures final imaging effect.
Image quality is improved in order to reduce stray light in camera lens, in other specific embodiments, three wave band camera lenses are also wrapped
Aperture diaphragm 4 is included, aperture diaphragm 4 is located between third meniscus 3 and the first biconcave lens 5；By aperture diaphragm eliminate into
Penetrate influence of the stray light to optical path is propagated in light.
In the specific set-up mode of multiple lens, the 6th meniscus 11, the 7th meniscus 12 and third lenticular
Mirror 13 is successively bonded, and the exit facet of the first biconcave lens 5 is bonded with the plane of incidence of the first biconvex lens 6.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of ultraviolet, visible, three wave band of near-infrared is total to road optical system characterized by comprising three wave band camera lenses filter
Mechanism, driving mechanism；
Filtering mechanism is located at three wave band camera lens emergent light sides, and filtering mechanism includes bracket (20), mounting disc (21), multiple optical filterings
Piece (22), bracket (20) are equipped with the shaft for being parallel to the axis arrangement of three wave band camera lenses, and mounting disc (21) passes through the shaft
It may be rotatably mounted on bracket (20), multiple optical filters (22) surround the shaft circumferentially on mounting disc (21), drive
Motivation structure is connect for driving mounting disc (21) to rotate with mounting disc (21).
2. ultraviolet, visible, three wave band of near-infrared according to claim 1 is total to road optical system, which is characterized in that mounting disc
(21) circumferential four mounting holes are equipped with, filtering mechanism includes the ultraviolet filtering being separately mounted in three mounting holes
Piece, visible filter and near infrared filter.
3. ultraviolet, visible, three wave band of near-infrared according to claim 1 is total to road optical system, which is characterized in that driving machine
Structure includes driving motor (30) and driving gear (31), and driving motor (30) is located at mounting disc (21) side, is driven gear (31)
It is mounted in the drive shaft of driving motor (30), mounting disc (21) periphery is equipped with the outer toothed portion engaged with driving gear (31).
4. ultraviolet, visible, three wave band of near-infrared according to claim 1 is total to road optical system, which is characterized in that three wave bands
Camera lens includes convex to the first meniscus (1), the second meniscus (2), third set gradually close to mounting disc (21) direction
Concavees lens (3), the first biconcave lens (5), the first biconvex lens (6), the first concave-convex lens (7), the second biconvex lens (8),
Four meniscuses (9), the 5th meniscus (10), the 6th meniscus (11), the 7th meniscus (21), third biconvex lens
(13), the second concave-convex lens (14), the second biconcave lens (15).
5. ultraviolet, visible, three wave band of near-infrared according to claim 4 is total to road optical system, which is characterized in that first is convex
Concavees lens (1), third meniscus (3), the 4th meniscus (9), the 5th meniscus (10), the 6th meniscus (11),
Third biconvex lens (13), the second biconcave lens (15) are all made of fused quartz material and are made.
6. ultraviolet, visible, three wave band of near-infrared according to claim 4 is total to road optical system, which is characterized in that second is convex
Concavees lens (2), the first biconcave lens (5), the first biconvex lens (6), the first concave-convex lens (7), the 7th meniscus (12),
Two concave-convex lens (14) are all made of calcium fluoride material and are made.
7. ultraviolet, visible, three wave band of near-infrared according to claim 4 is total to road optical system, which is characterized in that second pair
Convex lens (8) is made of magnesium fluoride material.
8. ultraviolet, visible, three wave band of near-infrared according to claim 4 is total to road optical system, which is characterized in that three wave bands
Camera lens further includes aperture diaphragm (4), and aperture diaphragm (4) is located between third meniscus (3) and the first biconcave lens (5).
9. ultraviolet, visible, three wave band of near-infrared according to claim 4 is total to road optical system, which is characterized in that the 6th is convex
Concavees lens (11), the 7th meniscus (12) and third biconvex lens (13) are successively bonded.
10. ultraviolet, visible, three wave band of near-infrared according to claim 4 is total to road optical system, which is characterized in that first
The exit facet of biconcave lens (5) is bonded with the plane of incidence of the first biconvex lens (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910097561.0A CN109633892A (en) | 2019-01-31 | 2019-01-31 | One kind is ultraviolet, visible, three wave band of near-infrared is total to road optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910097561.0A CN109633892A (en) | 2019-01-31 | 2019-01-31 | One kind is ultraviolet, visible, three wave band of near-infrared is total to road optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109633892A true CN109633892A (en) | 2019-04-16 |
Family
ID=66064454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910097561.0A Pending CN109633892A (en) | 2019-01-31 | 2019-01-31 | One kind is ultraviolet, visible, three wave band of near-infrared is total to road optical system |
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| CN (1) | CN109633892A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110087043A (en) * | 2019-05-20 | 2019-08-02 | 湖南工程学院 | A kind of wisdom field post monitoring system |
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| CN103309019A (en) * | 2013-06-24 | 2013-09-18 | 中国科学院长春光学精密机械与物理研究所 | Optical system of ultraviolet multi-band panoramic imaging instrument |
| WO2014046219A1 (en) * | 2012-09-18 | 2014-03-27 | Ricoh Company, Ltd. | Illumination device, projector, and illumination method |
| TW201426160A (en) * | 2012-12-28 | 2014-07-01 | Delta Electronics Inc | Light source system for stereoscopic image |
| US10274815B2 (en) * | 2016-08-12 | 2019-04-30 | Lg Electronics Inc. | Projector |
-
2019
- 2019-01-31 CN CN201910097561.0A patent/CN109633892A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014046219A1 (en) * | 2012-09-18 | 2014-03-27 | Ricoh Company, Ltd. | Illumination device, projector, and illumination method |
| TW201426160A (en) * | 2012-12-28 | 2014-07-01 | Delta Electronics Inc | Light source system for stereoscopic image |
| CN103309019A (en) * | 2013-06-24 | 2013-09-18 | 中国科学院长春光学精密机械与物理研究所 | Optical system of ultraviolet multi-band panoramic imaging instrument |
| US10274815B2 (en) * | 2016-08-12 | 2019-04-30 | Lg Electronics Inc. | Projector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110087043A (en) * | 2019-05-20 | 2019-08-02 | 湖南工程学院 | A kind of wisdom field post monitoring system |
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