CN110673332A - High-precision laser partition scanning device - Google Patents
High-precision laser partition scanning device Download PDFInfo
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- CN110673332A CN110673332A CN201910817304.XA CN201910817304A CN110673332A CN 110673332 A CN110673332 A CN 110673332A CN 201910817304 A CN201910817304 A CN 201910817304A CN 110673332 A CN110673332 A CN 110673332A
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- 238000005192 partition Methods 0.000 title abstract description 6
- 239000005357 flat glass Substances 0.000 claims abstract description 31
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims abstract description 10
- 210000004907 gland Anatomy 0.000 claims description 11
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 14
- 239000000306 component Substances 0.000 description 26
- 238000005259 measurement Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000020347 spindle assembly Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0875—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements
- G02B26/0883—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements the refracting element being a prism
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4817—Constructional features, e.g. arrangements of optical elements relating to scanning
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- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
The invention relates to a high-precision laser partition scanning device, which solves the problems of complex structure, high cost and high system installation and adjustment difficulty of the conventional laser scanning system. The apparatus includes an optical unit and a supporting unit; the supporting unit comprises a cylinder top cover, a cylinder and a cylinder bottom plate, and an installation plate is arranged in the cylinder; the optical unit comprises a transmitting module and a receiving module; the transmitting module comprises a laser, a prism rotating shaft assembly, a fixed seat assembly, a transmitting mirror assembly, a folding mirror assembly and transmitting window glass; the laser is installed in barrel top cap top, and prism pivot subassembly sets up the light outlet at the laser, reflects the transmission light of laser to emission mirror subassembly, and fixing base subassembly includes emission mirror fixing base and fixed window glass, and the hinge mirror subassembly reflects emission mirror subassembly's emergent light to emission window glass, and receiving module includes receiving mirror group and receiving window glass.
Description
Technical Field
The invention relates to the field of laser radar detection, in particular to a high-precision laser partition scanning device.
Background
The laser scanning is an advanced remote measurement technology, has the characteristics of rapid measurement, wide measurement range, high spectral resolution, large vertical span, high detection precision, strong environmental adaptability and the like, is mainly used for accurately measuring the position information (distance and angle), the motion state and the appearance shape of an obstacle, detecting, identifying, distinguishing and tracking the obstacle, completing three-dimensional map drawing and the like.
The laser scanning system mainly comprises a transmitting system, a receiving system and a signal processing system, and core components of the system comprise a laser, an optical system, a scanning part, a detector, a receiving circuit and the like. The pulse laser system converts the measurement of the target distance information into the measurement of the laser flight time, the laser emits pulse laser, the pulse laser irradiates an obstacle through the emitting optical system, an echo laser signal is obtained through the diffuse reflection of the target, the echo laser signal is transmitted to the photoelectric conversion device through the receiving optical system, and finally three-dimensional information is obtained through the image processing system.
With the continuous maturity of laser technology, the application platform of the laser scanning system is also expanded from ground-based detection to airborne and satellite-borne, and the application and the demand of the laser scanning system are wider and wider. Therefore, miniaturization, light weight and low cost of the high-precision laser scanning system become an important index for assessing the quality of the laser scanning system. However, the existing laser scanning system has the problems of complex structure, higher cost, inconvenient maintenance and development, higher difficulty in system installation and adjustment and the like.
Disclosure of Invention
The invention aims to solve the problems of complex structure, high cost and high difficulty in system installation and adjustment of the conventional laser scanning system, and provides a high-precision laser subarea scanning device which is compact in structure, high in precision, simple in installation and adjustment, good in stability and low in cost.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a high-precision laser subarea scanning device comprises an optical unit and a supporting unit; the supporting unit comprises a cylinder top cover, a cylinder and a cylinder bottom plate; the cylinder top cover is arranged at the top end of the cylinder, the cylinder bottom plate is arranged at the bottom end of the cylinder, an installation plate is arranged in the cylinder, and a plurality of windows are arranged on the cylinder wall of the cylinder along the circumferential direction; the optical unit comprises a transmitting module and a receiving module; the transmitting module comprises a laser, a prism rotating shaft assembly, a fixing seat assembly, a plurality of transmitting mirror assemblies, a plurality of folding mirror assemblies and a plurality of transmitting window glasses; the laser is arranged above the top cover of the cylinder body, and a light outlet of the laser is vertically downward; the prism rotating shaft assembly is arranged at a light outlet of the laser, reflects emitted light of the laser to the emitting mirror assembly, and converts the emitted light from linear light into surface light; the prism rotating shaft assembly comprises a prism rotating shaft assembly and a fixing seat assembly, wherein the fixing seat assembly comprises a transmitting mirror fixing seat and fixed window glass arranged above the transmitting mirror fixing seat, and emergent light of the prism rotating shaft assembly is incident to the transmitting mirror assembly through the fixed window glass; the transmitting mirror fixing seat is arranged on the mounting plate of the barrel, the axis of the transmitting mirror fixing seat is coaxial with the axis of the prism rotating shaft component, the plurality of transmitting mirror components are arranged on the mounting plate and are arranged along the circumferential direction of the transmitting mirror fixing seat, the folding mirror component is arranged on the light emergent light path of the transmitting mirror component and reflects emergent light of the transmitting mirror component to the transmitting window glass, and the transmitting window glass is arranged on the light emergent light path of the folding mirror component; the receiving module comprises a plurality of receiving mirror groups and a plurality of receiving window glass, the receiving mirror groups are arranged along the circumferential direction of the transmitting mirror fixing seat and are arranged at intervals with the transmitting mirror group, and the receiving window glass is arranged on a light incident path of the receiving mirror groups.
Further, the prism rotating shaft assembly comprises a motor, a motor base, a bearing inner shaft, a bearing inner ring gland, a prism and a prism base; the motor is installed on the motor base, the motor base is arranged on the mounting plate of the barrel, the shaft in the bearing is a hollow shaft, the hollow shaft is sleeved on an output shaft of the motor, the bearing is arranged between the hollow shaft and the barrel, a bearing inner ring gland is used for compressing a bearing inner ring and is fixedly connected with the shaft in the bearing, the prism base is fixedly connected with the shaft in the bearing, the prism is fixed in a prism base cavity, and the prism can rotate 360 degrees along the central line of the rotating shaft through the driving of the motor.
Furthermore, the reflecting surface of the prism forms an included angle of 45 degrees with the central line of the rotating shaft.
Further, the bearing is an angular contact ball bearing.
Further, the transmitting mirror assembly comprises a transmitting lens barrel, and a first transmitting mirror frame, a second transmitting mirror frame and a third transmitting mirror frame which are arranged in the transmitting lens barrel, wherein a first lens is installed in the first transmitting mirror frame, a second lens is installed in the second transmitting mirror frame, and a third lens is installed in the third transmitting mirror frame.
Further, the broken shaft mirror assembly comprises a reflecting mirror and a broken shaft mounting frame, the reflecting mirror is arranged on the broken shaft mounting frame and reflects emergent light of the reflecting mirror assembly to the emission window glass, and the broken shaft mounting frame is arranged on the mounting plate.
Further, the receiving lens group comprises a receiving lens cone and a plurality of lenses arranged in the receiving lens cone.
Further, the barrel top cover is provided with a plurality of top cover lightening holes.
Furthermore, a plurality of bottom plate lightening holes are formed in the bottom plate of the cylinder body.
Furthermore, an O-shaped ring is arranged on the contact surface of the bottom plate of the cylinder body and the cylinder body.
Compared with the prior art, the invention has the following beneficial effects:
1. the high-precision laser partition scanning device has the advantages of good overall consistency, compact structure, high rigidity and good stability, and meanwhile, the device has the advantages of strong processing and adjusting manufacturability, low cost and the like.
2. The high-precision laser subarea scanning device realizes high coaxiality of the optical lens group through a collimation centering assembly and adjustment technology, reduces the divergence angle of laser beams, and effectively improves the detection capability and precision of the system.
3. The prism rotating shaft component of the emission system of the high-precision laser partition scanning device adopts a pair of high-precision angle contact ball bearings to form a shaft system to control the rotating shaft to shake, so that the fluctuation of emergent laser is reduced, emergent rays form high-precision coplanar beams, and the scanning precision and stability of the system are greatly improved.
Drawings
FIG. 1 is a three-dimensional exploded view of a high precision laser sector scanning apparatus of the present invention;
FIG. 2 is a top view of the high precision laser sector scanning apparatus of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is an optical layout of the high precision laser sector scanning apparatus of the present invention;
FIG. 5 is an assembly view of the prism spindle assembly of the high precision laser zoned scanning device of the present invention;
FIG. 6 is a diagram of a structure of a fixing base assembly of the high-precision laser scanning device of the present invention;
FIG. 7 is an assembly view of the mirror assembly of the high precision laser sector scanning apparatus of the present invention;
FIG. 8 is a drawing showing the assembly of the receiving lens set of the high-precision laser scanning device according to the present invention.
Reference numerals: 1-laser, 2-barrel, 3-prism rotating shaft component, 4-fixed seat component, 5-emitter mirror component, 6-folding shaft mirror component, 7-emitter window glass, 8-receiver mirror group, 9-receiver window glass, 10-barrel top cover, 11-barrel bottom plate, 12-top cover lightening hole, 13-bottom plate lightening hole, 14-O-shaped ring, 21-mounting plate, 22-window, 31-motor, 32-motor seat, 33-bearing inner shaft, 34-bearing seat, 35-bearing outer ring gland, 36-bearing inner ring gland, 37-prism seat, 41-emitter mirror fixed seat, 42-fixed window glass, 51-first emitter mirror frame, 52-second emitter mirror frame, 53-third transmitting group mirror frame, 54-transmitting lens cone, 61-reflecting mirror, 62-folding shaft mounting frame and 81-receiving lens cone.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
The invention comprehensively considers the technical difficulties of processing, manufacturing, system installation and debugging and the like, solves the defects of high cost and inconvenient maintenance and development of a laser scanning device, and provides a high-precision laser subarea scanning device.
As shown in fig. 1 to 8, the laser scanning apparatus is mainly composed of an optical unit and a supporting unit thereof, and the optical unit includes a transmitting module and a receiving module. The optical unit is used as an important component of the laser scanning device, the main function of the optical unit is to reduce the divergence angle of laser beams so that the laser beams can be transmitted by larger energy for a longer distance, and the function of the supporting unit is to realize the stress-free or micro-stress supporting and fixing function on the optical element on the premise of ensuring the strength and the rigidity of the device.
The supporting unit comprises a cylinder top cover 10, a cylinder 2 and a cylinder bottom plate 11; the cylinder top cover 10 is arranged at the top end of the cylinder 2, the cylinder bottom plate 11 is arranged at the bottom end of the cylinder 2, the cylinder 2 is internally provided with a mounting plate 21, and the cylinder wall of the cylinder is circumferentially provided with a plurality of windows 22 for light inlet and light outlet of the optical assembly. In order to reduce the weight of the device, lightening holes are formed in the cylinder top cover 10 and the cylinder bottom plate 11. In order to reduce the influence of the external environment on the device, an O-shaped ring 14 is arranged on the contact surface of the cylinder body bottom plate 11 and the cylinder body 2, so that media such as water and the like are prevented from entering the device.
The emission module mainly comprises a laser 1, a prism rotating shaft component 3, a fixed seat component 4, a plurality of emission mirror components 5, a plurality of folding shaft mirror components 6 and a plurality of emission window glass 7. The laser 1 is fixedly arranged on the top cover 10 of the cylinder body through screws, and a light outlet of the laser 1 is vertically downward. The prism rotating shaft component 3 is arranged at a light outlet of the laser 1, reflects the emitted light of the laser 1 to the emission mirror component 5, and simultaneously rotates the emitted light of the laser 1 by 360 degrees, so that the emitted light of the laser 1 is converted into surface light from linear light; the fixing seat assembly 4 comprises a transmitting mirror fixing seat 41 and fixed window glass 42 arranged above the transmitting mirror fixing seat 41, and emergent light of the prism rotating shaft assembly 3 enters the transmitting mirror assembly 5 through the fixed window glass 42; the transmitting mirror fixing seat 41 is fixedly arranged on the mounting plate 21 of the barrel 2 through screws, the axis of the transmitting mirror fixing seat is coaxially arranged with the axis of the prism rotating shaft component 3, the plurality of transmitting mirror components 5 are arranged on the mounting plate 21, the transmitting mirror fixing seat 41 is circumferentially arranged, the folding shaft mirror component 6 is arranged on the light emitting light path of the transmitting mirror component 5, emergent light of the transmitting mirror component 5 is reflected to the transmitting window glass 7, and the transmitting window 22 is arranged on the light emitting light path of the folding shaft mirror component 6.
In the embodiment of the present invention, the fixed window glass 42 is fixedly connected to the reflector holder 41 by an adhesive, and the reflector assemblies 5 are uniformly arranged along the circumferential direction of the reflector holder 41 by 60 °.
The prism rotating shaft component 3 mainly comprises a motor 31, a motor base 32, an angular contact ball bearing, a bearing inner shaft 33, a bearing seat 34, a bearing outer ring gland 35, a bearing inner ring gland 36 and a prism base 37. The motor base 32 is fixedly connected with the mounting plate 21 of the barrel 2 through screws, the motor 31 is fixed on the motor base 32 through screws, and the bearing inner shaft 33 is a hollow shaft which is sleeved on an output shaft of the motor 31 and is matched with the shaft hole of the motor 31 and fixedly connected with the shaft hole through screws. Inner rings of a pair of angular contact ball bearings are matched with a bearing inner shaft 33 through shaft holes, bearing outer rings are matched with a bearing seat 34 through shaft holes, the bearing seat 34 is fixedly connected with a motor base 32 through screws, and a bearing outer ring gland 35 is fixedly connected with the bearing seat 34 through screws and tightly presses the bearing outer rings; the bearing inner ring gland bush 36 is in threaded fastening connection with the bearing inner shaft 33 and tightly presses the bearing inner ring; the prism seat 37 is fixedly connected with the bearing inner ring gland 36 through screws, the prism is fixed in the cavity of the prism seat 37 through adhesive, the reflecting surface and the central line of the rotating shaft form an included angle of 45 degrees, and the prism can rotate 360 degrees along the central line of the rotating shaft through the driving of the motor 31.
The transmitting mirror assembly 5 comprises a transmitting lens barrel 54 and a first transmitting lens group mirror frame 51, a second transmitting lens group mirror frame 52 and a third transmitting lens group mirror frame 53 which are sequentially arranged in the transmitting lens barrel 54, a first lens is installed in the first transmitting lens group mirror frame 51, a second lens is installed in the second transmitting lens group mirror frame 52, a third lens is installed in the third transmitting lens group mirror frame 53, the first lens, the second lens and the third lens are respectively compressed in the first transmitting lens group mirror frame 51, the second transmitting lens group mirror frame 52 and the third transmitting lens group mirror frame 53 through clamping rings, and optical lenses in the transmitting mirror assembly 5 are arranged in a conventional mode.
First transmission group mirror picture frame 51 passes through adhesive fastening connection with transmission group lens cone 54, and through the collimation centering after realize that first lens optical axis is coaxial with first transmission group mirror picture frame 51 excircle, first transmission group mirror picture frame 51 and the cooperation of transmission group lens cone 54 shaft hole, through screw fastening connection, second transmission group mirror picture frame 52 and third transmission group mirror picture frame 53 constitute similarly with first transmission group mirror picture frame 51, and all cooperate with transmission group lens cone 54 shaft hole, pass through screw fastening connection with transmission group lens cone 54.
The folding shaft mirror assembly 6 comprises a reflector 61 and a folding shaft mounting rack 62, and the folding shaft mirror assembly 6 is fixedly connected with the cylinder 2 through screws and uniformly arranged at 60 degrees along the circumferential direction of the cylinder 2; specifically, the reflector 61 is arranged on the hinge mounting bracket 62, and reflects the emergent light of the emission mirror assembly 5 to the emission window glass 7, and the hinge mounting bracket 62 is arranged on the mounting plate 21; the emission window glass 7 is arranged on a light-emitting path of the folding axis mirror assembly 6, is fixed on the cylinder wall of the cylinder 2 through screws, and is uniformly arranged along the circumferential direction of the cylinder 2 by 60 degrees.
The receiving module comprises a plurality of receiving lens groups 8 and a plurality of receiving window glasses 9, the receiving lens groups 8 are similar to the transmitting lens assembly 5 in composition mode, the receiving lens groups 8 comprise receiving lens barrels 81 and a plurality of lenses arranged in the receiving lens barrels 81, and the lenses of the receiving lens groups 8 are arranged in a conventional mode. The receiving lens group 8 is fixedly connected with the cylinder 2 through screws, is uniformly arranged at 60 degrees along the circumferential direction of the cylinder 2, has a phase angle difference of 60 degrees with the installation phase angle of the transmitting lens component 5 in the transmitting system, is fixedly connected with the receiving window glass 9 and the wall of the cylinder 2 through threads, and has a glass optical axis coaxial with the axis of the receiving lens group 8.
The working process of the laser scanning system comprises the following steps: laser 1 emergent laser, through prism 90 degrees turn-around, through the transmission module transmission outside barrel 2, wherein the prism pivot in the transmission module is with certain frequency 360 degrees rotations, changes the laser of high energy, high collimation degree from "line" to "face", reaches the dynamic scanning purpose, and receiving module meets obstacle echo receipt information through laser simultaneously, obtains three-dimensional stereo information through image processing system at last.
Claims (10)
1. The utility model provides a high accuracy laser subregion scanning device which characterized in that: comprises an optical unit and a supporting unit;
the supporting unit comprises a cylinder top cover (10), a cylinder (2) and a cylinder bottom plate (11); the barrel top cover (10) is arranged at the top end of the barrel (2), the barrel bottom plate (11) is arranged at the bottom end of the barrel (2), an installation plate (21) is arranged in the barrel (2), and a plurality of windows (22) are arranged on the barrel wall of the barrel along the circumferential direction;
the optical unit comprises a transmitting module and a receiving module;
the transmitting module comprises a laser (1), a prism rotating shaft assembly (3), a fixed seat assembly (4), a plurality of transmitting mirror assemblies (5), a plurality of folding mirror assemblies (6) and a plurality of transmitting window glasses (7);
the laser (1) is arranged above the top cover (10) of the cylinder body, and a light outlet of the laser is vertically downward; the prism rotating shaft component (3) is arranged at a light outlet of the laser (1), reflects emitted light of the laser (1) to the emission mirror component (5), and converts the emitted light from linear light into surface light;
the fixing seat assembly (4) comprises a transmitting mirror fixing seat (41) and fixing window glass (42) arranged above the transmitting mirror fixing seat (41), and emergent light of the prism rotating shaft assembly (3) enters the transmitting mirror assembly (5) through the fixing window glass (42);
the emission mirror fixing seat (41) is arranged on the mounting plate (21) of the barrel (2), the axis of the emission mirror fixing seat is coaxial with the axis of the prism rotating shaft component (3), the plurality of emission mirror components (5) are arranged on the mounting plate (21) and are arranged along the circumferential direction of the emission mirror fixing seat (41), the folding shaft mirror component (6) is arranged on the light outlet path of the emission mirror components (5) and reflects the emergent light of the emission mirror components (5) to the emission window glass (7);
the receiving module comprises a plurality of receiving mirror groups (8) and a plurality of receiving window glasses (9), the receiving mirror groups (8) are arranged along the circumferential direction of the transmitting mirror fixing seat (41) and are arranged at intervals with the transmitting mirror assembly (5), and the receiving window glasses (9) are arranged on a light incident path of the receiving mirror groups (8).
2. The high precision laser sector scanning device of claim 1, wherein: the prism rotating shaft component (3) comprises a motor (31), a motor base (32), a bearing inner shaft (33), a bearing inner ring gland (36), a prism and a prism base (37);
the motor (31) is installed on the motor base (32), the motor base (32) is arranged on the installation plate (21) of the barrel body (2), the bearing inner shaft (33) is a hollow shaft, the bearing inner shaft is sleeved on an output shaft of the motor (31), a bearing is arranged between the bearing inner shaft and the barrel body (2), the bearing inner ring gland (36) is used for pressing a bearing inner ring and is fixedly connected with the bearing inner shaft (33), the prism base (37) is fixedly connected with the bearing inner shaft (33), the prism is fixed in a cavity of the prism base (37), and the prism can rotate 360 degrees along a central line of a rotating shaft through the driving of the motor (31).
3. The high precision laser sector scanning device of claim 2, wherein: the reflecting surface of the prism forms an included angle of 45 degrees with the central line of the rotating shaft.
4. A high precision laser sector scanning apparatus according to claim 3, wherein: the bearing is an angular contact ball bearing.
5. The high-precision laser subarea scanning device according to any one of claims 1 to 4, wherein: the transmitting mirror assembly (5) comprises a transmitting lens barrel (54) and a first transmitting mirror frame (51), a second transmitting mirror frame (52) and a third transmitting mirror frame (53) which are arranged in the transmitting lens barrel (54), wherein a first lens is installed in the first transmitting mirror frame (51), a second lens is installed in the second transmitting mirror frame (52), and a third lens is installed in the third transmitting mirror frame (53).
6. The high precision laser sector scanning device of claim 5, wherein: the folding shaft mirror assembly (6) comprises a reflecting mirror (61) and a folding shaft mounting rack (62), the reflecting mirror (61) is arranged on the folding shaft mounting rack (62) to reflect emergent light of the reflecting mirror assembly (5) to the emission window glass (7), and the folding shaft mounting rack (62) is arranged on the mounting plate (21).
7. The high precision laser sector scanning device of claim 6, wherein: the receiving lens group (8) comprises a receiving lens cone (81) and a plurality of lenses arranged in the receiving lens cone (81).
8. The high precision laser sector scanning device of claim 7, wherein: the cylinder top cover (10) is provided with a plurality of top cover lightening holes (12).
9. The high precision laser sector scanning device of claim 8, wherein: the barrel bottom plate (11) is provided with a plurality of bottom plate lightening holes (13).
10. The high precision laser sector scanning device of claim 9, wherein: an O-shaped ring (14) is arranged on the contact surface of the cylinder body bottom plate (11) and the cylinder body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910817304.XA CN110673332A (en) | 2019-08-30 | 2019-08-30 | High-precision laser partition scanning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910817304.XA CN110673332A (en) | 2019-08-30 | 2019-08-30 | High-precision laser partition scanning device |
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| CN110673332A true CN110673332A (en) | 2020-01-10 |
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| CN201910817304.XA Pending CN110673332A (en) | 2019-08-30 | 2019-08-30 | High-precision laser partition scanning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114125340A (en) * | 2021-11-13 | 2022-03-01 | 深圳市宏钢机械设备有限公司 | RGB display device emission window tube cover for laser television and production process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114125340A (en) * | 2021-11-13 | 2022-03-01 | 深圳市宏钢机械设备有限公司 | RGB display device emission window tube cover for laser television and production process thereof |
| CN114125340B (en) * | 2021-11-13 | 2024-05-10 | 深圳市宏钢光电封装技术股份有限公司 | RGB display device emission window tube cover for laser television and production process thereof |
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Application publication date: 20200110 |