CN108169918A - Underwater imaging laser illumination light spot homogenization adjusting device - Google Patents
Underwater imaging laser illumination light spot homogenization adjusting device Download PDFInfo
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- CN108169918A CN108169918A CN201711462308.8A CN201711462308A CN108169918A CN 108169918 A CN108169918 A CN 108169918A CN 201711462308 A CN201711462308 A CN 201711462308A CN 108169918 A CN108169918 A CN 108169918A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 20
- 238000005286 illumination Methods 0.000 title abstract description 6
- 238000000265 homogenisation Methods 0.000 title description 2
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 230000003287 optical effect Effects 0.000 abstract description 6
- 238000003491 array Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
- G02B27/0961—Lens arrays
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention belongs to the technical field of optical illumination and imaging, and particularly relates to a homogenizing adjusting device for an illumination spot of underwater imaging laser. The lens barrel fixing device comprises a lens barrel, a first fixing block, a second fixing block, a first circular ring and a second circular ring, wherein the first fixing block, the second fixing block, the first circular ring and the second circular ring are arranged in the lens barrel and are coaxial with the lens barrel; the first fixing block and the second fixing block are respectively used for fixing the first circular ring and the second circular ring, and the first circular ring and the second circular ring are respectively used for fixing two micro lenses; through the mechanical structure design, the micro-adjustment of relative axial distance error, relative rotation error and relative translation error (plane movement in two directions of X, Y) between two groups of micro-lenses is effectively realized by adopting a mode of independently adjusting four degrees of freedom, the strict alignment of the optical axes of the two groups of micro-lens arrays is ensured, the adjustment precision is high, the adjustment method is simple, and the light spot quality is good.
Description
Technical field
The invention belongs to illumination opticals and technical field of imaging, and in particular to a kind of to adjust machine using biserial microlens array
Structure makes the homogenized device of illumination laser output beam in Underwater Imaging.
Background technology
When being imaged under water, water body to natural light there are strong absorption and scattering, using natural light as lighting source
The energy attenuation in time is big, and transmission range is short.Therefore it is mostly illuminated in image camera system using laser light source under water.
The hot spot Gaussian distributed that laser is directly emitted, Energy distribution is uneven, and presentation central energy is big, the low spy of edge energy
Sign, is illuminated using this light source, can influence the imaging effect of underwater camera, can not directly be used, needed direct to laser
The hot spot of outgoing carries out being shaped as flat top beam, is uniformly distributed the energy of its entire hot spot.
Have at present using more extensive solution：Three kinds of binary diffraction element, hollow tubing conductor and microlens array etc.
Method.Since microlens array method has, beam homogenization system bulk is small, energy transmission efficiency is high, unwise to input light distribution
The features such as sense, and the advantages that can also be achieved certain depth of focus, be more and more applied to homogenizing for laser in this way and make
In.
Common microlens array method is composed of the lenticule of two row series connection, must be had between this two row lenticule stringent
Relative position relation, i.e., between two lens are ensured under the premise of focal length, each micro lens unit needs close alignment.This is just
It is required that two lenticules will eliminate the error brought due to process and assemble of installation ontology etc. with certain regulating mechanism.
Invention content
The object of the present invention is to provide a kind of Underwater Imaging laser lighting light spot homogenizing regulating devices, are set by mechanical structure
Meter effectively realizes the relative axle between two groups of lenticules away from error, opposite rotation in a manner that four degree of freedom are individually adjusted
Turn the micro-positioning regulators of error and relative translation error (planar movement in two direction of X, Y), ensure that two groups of microlens array optical axises
Close alignment, degree of regulation is high, adjusting method is simple, optical quality is good.
The technical solution of the present invention is to provide a kind of Underwater Imaging laser lighting light spot homogenizing regulating device, special
Part is：Including lens barrel, be arranged in lens barrel and first fixed block coaxial with lens barrel, the second fixed block, the first annulus and
Second annulus；First fixed block, the second fixed block are respectively used to fix the first annulus and the second annulus, the first annulus and the second circle
Ring is respectively used to fixed two panels lenticule；
Secured adjusted device is further included, above-mentioned secured adjusted device includes the first holding screw, the second holding screw, adjusts
Screw rod and axis move screw rod；
The center of above-mentioned first fixed block has ellipse hole, and the short-axis direction of ellipse hole is defined as upper and lower
To the long axis direction of ellipse hole is defined as left and right directions；
Lens barrel inner wall is equipped with hole slot, and outer wall and outer right wall are plane on the left of the first fixed block, and with the hole in lens barrel
Slot plane is bonded, and two cambered surface spacing are more than in the first fixed block two cambered surface spacing up and down to hole slot up and down；
Above-mentioned first annulus is located inside the ellipse hole, top and lower part and the first annulus of ellipse hole
Outer circle fits closely；
First holding screw and the second holding screw are located on the short axle of ellipse hole and long axis extended line respectively, and first
Holding screw and the second holding screw pass through lens barrel, and the first holding screw and the second holding screw head hold out against the first annulus respectively
And first fixed block；
Annular projection is circumferentially additionally provided with along lens barrel inner wall, the second fixed block is contacted with an end face of the annular projection；
One end of above-mentioned axis shifting screw rod sequentially passes through lens barrel drive end bearing bracket, the second fixed block and annular projection and is limited by circlip for shaft
In the other end of annular projection；Axis moves the other end contact lens barrel drive end bearing bracket of screw rod；Axis moves screw rod and the second fixed block screw thread
Connection；
The center of second fixed block offers circular through hole, and the second annulus is fixed in the circular through hole and can be along circle
The inner wall of shape through-hole rotates in a circumferential direction, and the second annulus radial direction is provided with threaded hole, and waist is offered on the second fixed block and lens barrel
Hole, adjusting screw rod pass through the waist hole of lens barrel and the second fixed block to be fixed with the threaded hole on the second annulus.
Preferably, in order to realize that the second fixation is fast and the second annulus steadily moves axially, Underwater Imaging laser of the present invention shines
Bright light spot homogenizing regulating device further includes guiding polished rod, and one end of above-mentioned guiding polished rod sequentially passes through lens barrel drive end bearing bracket, second solid
Block and annular projection limiting are determined in the other end of annular projection；The other end of above-mentioned guiding polished rod is pressed on lens barrel drive end bearing bracket end
Face.
Preferably, 2 threaded holes are provided on above-mentioned lens barrel up and down, left and right is provided with 2 through-holes, and two threaded holes are located at ellipse
On the short axle extended line of shape through-hole, through-hole is located on the long axis extended line of ellipse hole；
It is opened on first fixed block there are two threaded hole, on the extended line of long axis that two threaded holes are located at elliptical aperture, first
Holding screw holds out against the first annulus after sequentially passing through the screw thread on the through-hole and the first fixed block of lens barrel.
Preferably, two blind holes are also opened up on the first fixed block, it is described that the second holding screw passes through the screw thread of lens barrel to hold out against
Blind hole.
Preferably, the thickness of the first fixed block is more than the thickness of the first annulus, and the first fixed block inner wall circumferentially has groove,
First ring part is caught in the groove.
Preferably, the invention also includes small end cover, above-mentioned small end cover is located at the end face of the second fixed block, the second fixed block edge
The circumferential direction of circular through hole opens up annular groove, and the second annulus is located in the annular groove, and is fixed by small end cover.
Preferably, the invention also includes retaining mechanisms, and adjusting screw rod is locked at fixed position by retaining mechanism.
Preferably, above-mentioned retaining mechanism includes locking nut and gasket.
Preferably, lenticule is fixed on by injecting glue in the first annulus and the second annulus.
Preferably, the other end of above-mentioned guiding polished rod is pressed on lens barrel drive end bearing bracket end face by nut.
The beneficial effects of the invention are as follows：
1), regulating device of the present invention can be reduced to the adjusting of four degree of freedom, can make two groups of microlens array optical axises completely
Alignment, and each degree of freedom adjusts non-interference, degree of regulation height；
2), the present invention is realized left and right translation and upper and lower translation, will not be generated because common by two independent adjustment modules
The subsidiary turning effect generated during adjusting；
3), translation is adjusted using the mode of screw thread and axis is moved with higher degree of regulation, it is relatively large to regulated quantity
Rotation is adjusted and is adjusted axially, and is added to retaining mechanism, has good adjusting stability and operation ease.
4) it, after by adjusting, effectively reduces the interference fringe of laser emitting hot spot, reduce speckle phenomena, make light
Spot illumination is more uniform；
5), apparatus of the present invention are small, output intensity is evenly distributed, energy efficiency is high.
Description of the drawings
Fig. 1 is the smoothing mirror head rear end face figure for including regulating device of the present invention；
Fig. 2 is A-A sectional views in Fig. 1；
Fig. 3 is B-B sectional views in Fig. 1；
Fig. 4 is C-C sectional views in Fig. 1；
Fig. 5 is D direction views in Fig. 1；
Reference numeral is in figure：1- lens barrels, 2- drive end bearing brackets, the first fixed blocks of 3-, the first annulus of 4-, the second clamp screws of 5-
Nail, the second fixed blocks of 6-, 7- small end covers, the second annulus of 8-, 9- axis move screw rod, and 10- is oriented to polished rod, 11- spring washers, 12- spiral shells
Mother, 13- circlip for shaft, the first holding screws of 14-, 15- adjusting screw rods, 16- locking nuts, 17- gaskets, in 18- first
Hex bolts, the second hexagon socket head cap screws of 19-, 20- lenticules, 21- annular projections.
Specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention will be further described.
With reference to Fig. 1 and Fig. 2, it can be seen that regulating device of the present invention mainly includes lens barrel 1, is arranged in lens barrel 1 and and mirror
Cylinder 1 coaxial the first fixed block 3, the second fixed block 6, the first annulus 4 and the second annulus 8；
It will be seen from figure 1 that 1 inner wall of lens barrel is equipped with hole slot, 3 left side outer wall of the first fixed block is plane with outer right wall,
And be bonded with the hole slot plane in lens barrel 1, two cambered surface spacing are more than in the first fixed block 3 two cambered surface spacing up and down to hole slot up and down；
The center of first fixed block 3 has ellipse hole, trepanning of the ellipse hole for left and right directions, the first annulus 4
Inside ellipse hole, the top and lower part of ellipse hole and the outer circle of the first annulus 4 fit closely；
Lens barrel is provided with 2 threaded holes about 1, left and right is provided with 2 through-holes, and two threaded holes are located at the short axle of ellipse hole
On extended line, through-hole is located on the long axis extended line of ellipse hole；
It is opened on first fixed block 3 there are two threaded hole (see Fig. 3), two threaded holes are located at the extended line of the long axis of elliptical aperture
On, the first holding screw 14 holds out against the first annulus 4 after sequentially passing through the threaded hole on the through-hole and the first fixed block 3 of lens barrel 1, this
Locate that blind hole can be equipped on the first annulus 4, the head of the first holding screw 14 holds out against blind hole.
The threaded hole that second holding screw 5 is placed through ellipse hole short-axis direction lens barrel 1 holds out against the first fixed block 3.
Figure it is seen that the center of the second fixed block 6 offers circular through hole, the second fixed block 6 is along circular through hole
Annular groove circumferentially is opened up, the second annulus 8 is located in annular groove, and is fixed by small end cover 7, and the second annulus 8 is fixed on circle
It can rotate in a circumferential direction in shape through-hole and along the inner wall of circular through hole；
Annular projection 21 is circumferentially additionally provided with along 1 inner wall of lens barrel, an end face of the second fixed block 6 and annular projection 21 connects
It touches；One end of axis shifting screw rod 9 sequentially passes through 1 drive end bearing bracket 2 of lens barrel, the second fixed block 6 and annular projection 21 and passes through axis elasticity gear
13 limiting of circle is in the other end of annular projection 21；Axis moves the drive end bearing bracket 2 of the other end pine contact lens barrel 1 of screw rod 9；Axis moves screw rod
9 are threadedly coupled with the second fixed block 6；The one end for being oriented to polished rod 10 sequentially passes through lens barrel drive end bearing bracket 2, the second fixed block 6 and annular
Protrusion 21 is limited in the other end of annular projection 21；The other end for being oriented to polished rod 10 is pressed on lens barrel drive end bearing bracket by nut 12
2。
From fig. 4, it can be seen that 8 radial direction of the second annulus is provided with threaded hole, the second fixed block 6 on lens barrel 1 with opening up
There is waist hole, adjusting screw rod 15 passes through the waist hole of 1 and second fixed block 6 of lens barrel to be fixed with the threaded hole on the second annulus 8, adjusts spiral shell
Locking nut 16 and gasket 17 are additionally provided on bar 15.
Two panels lenticule 20 is divided in by injecting glue in two different annulus, wherein the first annulus 4 can drive it is micro-
Mirror is about 20, left and right translation, and the second annulus 8 can drive lenticule 20 to carry out axis relative to the lenticule 20 in the first annulus 4
To mobile and rotation.
It is realized especially by following manner：
The left and right translation of lenticule 20 in first annulus 4：As shown in Figure 1, Figure 3, the first annulus 4 is mounted on the first fixed block
In 3 ellipse hole, ellipse hole is the trepanning of left and right directions, and top, bottom are closely pasted with 4 outer circle of the first annulus
It closes, the first holding screw 14 is by the through-hole at left and right sides of lens barrel 1 and in the threaded hole of the first fixed block 3, the first circle
Ring 4 can control translation under the action of the first holding screw 14.
The upper and lower translation of lenticule 20 in first annulus 4：As shown in Figure 1 and Figure 2, the first fixed block 3 is nonstandard quasi-circular,
Its both sides is scabbled and is fitted with hole slot plane matched in lens barrel 1, and two cambered surface spacing are solid more than first up and down for hole slot
Determine two cambered surface spacing above and below in block 3, the second holding screw 5 is mounted in lens barrel 1 in both sides threaded hole up and down, the first fixed block 3
It can upper and lower translation under the action of the second holding screw 5 together with the first annulus 4.
The rotation of lenticule 20 in second annulus 8：As shown in Figure 4, Figure 5, the second annulus 8 is mounted on the by small end cover 7
In the slot of two fixed blocks 6, since it coordinates periphery to be circle, the second annulus 8 can be fixed around its axis opposite second
Block 6 rotates, and the second annulus 8 is provided with threaded hole in radial directions, and the second fixed block 6 is on corresponding circumferential position direction
Waist hole is provided with, lens barrel 1 is also provided with larger hole at the position of adjusting, and therefore, adjusting screw rod 15 passes through the large hole in lens barrel 1
It is connect with the waist hole in the second fixed block 6 with the threaded hole in the second annulus 8, and the second annulus 8 can be driven solid relative to second
Determine block 6 to be rotated, after rotation has been adjusted, by tightening adjusting screw rod 15, the extrados and second that can make the second annulus 8 are fixed
The intrados of block 6 compresses, and is locked.
The axial movement of lenticule 20 in second annulus 8：As shown in Fig. 2, drive end bearing bracket 2 is connect by bolt with lens barrel 1, axis
It moves screw rod 9 and is mounted in the hole of drive end bearing bracket 2 with being oriented to 10 equal one end of polished rod, the other end is mounted in the hole in lens barrel 1, and axis moves spiral shell
Bar 9 carries out axial pine using circlip for shaft 13 and fixes.Second fixed block 6 is provided with threaded hole and unthreaded hole, is moved respectively with axis
Screw rod 9 and guiding polished rod 10 connect and in lens barrel 1.The second fixed block 6 can be driven along leading by moving screw rod 9 by rotary shaft
Adjusting is moved axially to polished rod 10.After having adjusted, by tightening locking nut 16, the second fixed block 6 is locked in adjusting
Axial positions.
Claims (10)
1. a kind of Underwater Imaging laser lighting light spot homogenizing regulating device, it is characterised in that：Including lens barrel (1), it is arranged on lens barrel
(1) interior and first fixed block (3) coaxial with lens barrel (1), the second fixed block (6), the first annulus (4) and the second annulus (8)；The
One fixed block (3), the second fixed block (6) are respectively used to fix the first annulus (4) and the second annulus (8), the first annulus (4) and the
Two annulus (8) are respectively used to fixed two panels lenticule (20)；
Further include secured adjusted device, the secured adjusted device include the first holding screw (14), the second holding screw (5),
Adjusting screw rod (15) and axis move screw rod (9)；
The center of first fixed block (3) has ellipse hole, and the short-axis direction of ellipse hole is defined as upper and lower
To the long axis direction of ellipse hole is defined as left and right directions；
Lens barrel (1) inner wall is equipped with hole slot, and outer wall and outer right wall are plane on the left of the first fixed block (3), and in lens barrel (1)
Hole slot plane fitting, hole slot up and down two cambered surface spacing be more than the first fixed block (3) in up and down two cambered surface spacing；
First annulus (4) is inside the ellipse hole, top and lower part and the first annulus (4) of ellipse hole
Outer circle fit closely；
First holding screw (14) and the second holding screw (5) are located on the short axle of ellipse hole and long axis extended line respectively,
First holding screw (14) and the second holding screw (5) are across lens barrel (1), the first holding screw (14) and the second holding screw
(5) head holds out against the first annulus (4) and the first fixed block (3) respectively；
Annular projection (21) is circumferentially additionally provided with along lens barrel (1) inner wall, one of the second fixed block (6) and the annular projection (21)
End face contacts；One end that the axis moves screw rod (9) sequentially passes through lens barrel drive end bearing bracket (2), the second fixed block (6) and annular projection
(21) it is limited by circlip for shaft (13) in the other end of annular projection (21)；Axis moves another end in contact of screw rod (9)
Lens barrel drive end bearing bracket (2)；Axis moves screw rod (9) and is threadedly coupled with the second fixed block (6)；
The center of second fixed block (6) offers circular through hole, and the second annulus (8) is fixed in the circular through hole and being capable of edge
The inner wall of circular through hole rotates in a circumferential direction, and the second annulus (8) radial direction is provided with threaded hole, the second fixed block (6) on lens barrel (1)
Offer waist hole, adjusting screw rod (15) is across the spiral shell in the waist hole of lens barrel (1) and the second fixed block (6) and the second annulus (8)
Pit is fixed.
2. Underwater Imaging laser lighting light spot homogenizing regulating device according to claim 1, it is characterised in that：It further includes and leads
To polished rod (10), it is prominent that described one end for being oriented to polished rod (10) sequentially passes through lens barrel drive end bearing bracket (2), the second fixed block (6) and annular
(21) limiting is played in the other end of annular projection (21)；The other end for being oriented to polished rod (10) is pressed on lens barrel drive end bearing bracket end
Face (2).
3. Underwater Imaging laser lighting light spot homogenizing regulating device according to claim 2, it is characterised in that：The lens barrel
(1) 2 threaded holes are provided on up and down, left and right is provided with 2 through-holes, and two threaded holes are located at the short axle extended line of ellipse hole
On, through-hole is located on the long axis extended line of ellipse hole；
It is opened on first fixed block (3) there are two threaded hole, on the extended line of long axis that two threaded holes are located at elliptical aperture, first is tight
Determine to hold out against the first annulus (4) after screw (14) sequentially passes through the screw thread on the through-hole and the first fixed block (3) of lens barrel (1).
4. Underwater Imaging laser lighting light spot homogenizing regulating device according to claim 3, it is characterised in that：First fixes
Two blind holes are also opened up on block (3), the screw thread of the second holding screw (5) across lens barrel (1) holds out against the blind hole.
5. Underwater Imaging laser lighting light spot homogenizing regulating device according to claim 4, it is characterised in that：First fixes
The thickness of block (3) is more than the thickness of the first annulus (4), and the first fixed block (3) inner wall circumferentially has groove, the first annulus (4) portion
Divide and be caught in the groove.
6. Underwater Imaging laser lighting light spot homogenizing regulating device according to claim 5, it is characterised in that：It further includes small
End cap (7), the small end cover (7) are opened positioned at the end face of the second fixed block (6), the second fixed block (6) along the circumferential direction of circular through hole
If annular groove, the second annulus (8) is fixed in the annular groove, and by small end cover (7).
7. Underwater Imaging laser lighting light spot homogenizing regulating device according to claim 6, it is characterised in that：Further include lock
Adjusting screw rod (15) is locked at fixed position by tight mechanism by retaining mechanism.
8. Underwater Imaging laser lighting light spot homogenizing regulating device according to claim 7, it is characterised in that：The locking
Mechanism includes locking nut (16) and gasket (17).
9. Underwater Imaging laser lighting light spot homogenizing regulating device according to claim 8, it is characterised in that：Lenticule
(20) it is fixed in the first annulus (4) and the second annulus (8) by injecting glue.
10. Underwater Imaging laser lighting light spot homogenizing regulating device according to claim 9, it is characterised in that：It is described to lead
Lens barrel drive end bearing bracket end face (2) is pressed on by nut (12) to the other end of polished rod (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711462308.8A CN108169918B (en) | 2017-12-28 | 2017-12-28 | Underwater imaging laser illumination light spot homogenization adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711462308.8A CN108169918B (en) | 2017-12-28 | 2017-12-28 | Underwater imaging laser illumination light spot homogenization adjusting device |
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| Publication Number | Publication Date |
|---|---|
| CN108169918A true CN108169918A (en) | 2018-06-15 |
| CN108169918B CN108169918B (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711462308.8A Active CN108169918B (en) | 2017-12-28 | 2017-12-28 | Underwater imaging laser illumination light spot homogenization adjusting device |
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| CN110908058A (en) * | 2019-10-31 | 2020-03-24 | 中国航空工业集团公司洛阳电光设备研究所 | Multi freedom optical axis timing device |
| CN111929878A (en) * | 2020-07-10 | 2020-11-13 | 中国科学院西安光学精密机械研究所 | Off-axis three-mirror short-focus front objective lens system of hyperspectral imager |
| CN113031176A (en) * | 2019-12-24 | 2021-06-25 | 长春长光华大智造测序设备有限公司 | Optical fiber adjusting mechanism |
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| CN113031176A (en) * | 2019-12-24 | 2021-06-25 | 长春长光华大智造测序设备有限公司 | Optical fiber adjusting mechanism |
| CN113031176B (en) * | 2019-12-24 | 2023-01-03 | 长春长光华大智造测序设备有限公司 | Optical fiber adjusting mechanism |
| CN111929878A (en) * | 2020-07-10 | 2020-11-13 | 中国科学院西安光学精密机械研究所 | Off-axis three-mirror short-focus front objective lens system of hyperspectral imager |
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