CN210346718U - Reverse visual collimator - Google Patents
Reverse visual collimator Download PDFInfo
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- CN210346718U CN210346718U CN201921399317.1U CN201921399317U CN210346718U CN 210346718 U CN210346718 U CN 210346718U CN 201921399317 U CN201921399317 U CN 201921399317U CN 210346718 U CN210346718 U CN 210346718U
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- 230000003287 optical effect Effects 0.000 claims abstract description 94
- 230000004069 differentiation Effects 0.000 claims description 103
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
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- 230000001105 regulatory effect Effects 0.000 claims 3
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- 238000013461 design Methods 0.000 abstract description 3
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 238000012937 correction Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 2
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- 206010015911 Eye burns Diseases 0.000 description 1
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Abstract
The utility model belongs to a reverse visual collimator; the collimator comprises a collimator 11, wherein the collimator 11 comprises a laser display part, an optical display part and an optical part, the laser display part and the optical part are arranged on a horizontal line, the optical display part is vertically arranged between the laser display part and the optical part, two collimator integral fine adjusting devices 13 are symmetrically arranged in the middle of the collimator 11, two collimator integral coarse adjusting devices 14 are arranged at the lower parts of the two collimator integral fine adjusting devices 13, and a collimator integral fixing device 15 is arranged between the two collimator integral coarse adjusting devices 14; the device has the advantages of simple structure, reasonable design, great saving of occupied space and area, high debugging precision, high debugging speed, small error, avoidance of eye fatigue and danger, elimination of poor eyesight of human eyes, and great improvement on the precision and uniformity of a surveying and mapping instrument.
Description
Technical Field
The utility model belongs to the technical field of photoelectricity, concretely relates to reverse visual collimator.
Background
At present, the following current situations exist in the surveying instrument industry: surveying and mapping instruments include optical levels, electronic theodolites, total stations, plumbs and the like. These surveying instruments generally comprise an optical reference part and a laser pointing part, and both parts are respectively calibrated and debugged to a uniform reference during production or after-sale maintenance. There are two current calibration methods: 1. a correction method of three points and one line is utilized, namely, a vacant or longer factory building is found, a target with cross scales is respectively arranged at the positions of 50 meters and 100 meters or the target is reflected by a mirror to reach a longer distance, a more accurate level is used in advance, and the cross targets at the three positions are adjusted to be on a uniform horizontal line by human eyes through cross hairs of an observation instrument. Thereby achieving the instrument that the 50 m target and the 100 m target form three points and one line. And in the later stage, the two targets are used as reference lines to adjust and calibrate the optical cross reference line and the laser pointing point of the instrument, so that corresponding requirements are met. This correction method has the disadvantages: the large-scale single-eye eyepiece microscope has the advantages of large occupied area, large waste space in batch debugging, low precision, easy fatigue of human eyes for observing the eyepiece by single eye for a long time, and strict requirement on the height of a repeated instrument. 2. Using an optical collimator correction method: the method is advanced, namely, an infinite target can be generated by utilizing the collimator, a cross target with a corresponding scale value is arranged at the target, and the target is completely positioned on the focal plane of the objective lens, so that the target can be seen only by light parallel to the collimator objective lens and is displayed on the target center. A relatively accurate level is used in advance, the cross target in the collimator and the cross wire of the instrument are adjusted to be consistent by human eyes through the cross wire of the observation instrument, and the optical cross reference line and the laser pointing point of the instrument are adjusted by taking the cross target of the collimator as a reference line at the later stage, so that the requirement is met. This correction method has the disadvantages: the eyepieces are easy to fatigue and cause reading errors when being observed by the eyes for a long time, the eyepieces are required to be observed repeatedly by the eyes during debugging, the debugging screws are very precise, numerical values are observed by the eyes through the eyepieces when one point of screw is adjusted, and the adjusted instrument needs to be observed repeatedly for several times or even dozens of times, so that the production debugging speed is greatly influenced. In addition, when adjusting the laser pointing point, a light-filtering mirror is needed to be blocked between human eyes and an ocular lens to prevent the laser from directly irradiating the eyes to cause eye burn, and the danger coefficient is very high. And the eye sight of each debugging person is different, so that instrument precision errors debugged by different persons can be caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect among the prior art, and provide a structural design is reasonable, has saved occupation of land space and area greatly, and the debugging precision is high, fast, eliminates people's eye fatigue, avoids burning eyes and eliminates a reverse visual collimator of people's eye vision error.
The purpose of the utility model is realized like this: the collimator comprises a collimator 11, wherein the collimator 11 comprises a laser display part, an optical display part and an optical part, the laser display part and the optical part are arranged on a horizontal line, the optical display part is vertically arranged between the laser display part and the optical part, two collimator integral fine adjusting devices 13 are symmetrically arranged in the middle of the collimator 11, two collimator integral coarse adjusting devices 14 are arranged at the lower parts of the two collimator integral fine adjusting devices 13, and a collimator integral fixing device 15 is arranged between the two collimator integral coarse adjusting devices 14;
the laser display part consists of a first high-definition CCD camera 1, a first high-power lens 2, a first lens focal length regulator 3, a first lens position regulator 4, an LED adjustable light source 5, a laser display differentiation plate 6 and a photoelectric differentiation plate combination medium 7 in sequence from front to back;
the optical display part is composed of a second high-definition CCD camera 16, a second high-power lens 17, a second lens focal length adjuster 18, a second lens position adjuster 19, an optical display differentiation plate 20, an optical display differentiation plate focal length adjusting device 21, an optical display differentiation plate central adjusting device 22, a beam splitter prism adjusting device 23 and a beam splitter prism adjusting device 5 from front to back in sequence: 5, a beam splitter prism 24 and a uniform light plate 25;
the optical part consists of a calibration differentiation plate 8, a double differentiation plate centering adjusting device 9, a double differentiation plate focal length adjusting device 10, a collimator 11 and an optical objective 12 from front to back in sequence.
Preferably, the first high-definition CCD camera 1, the first high-power lens 2, the first lens focal length adjuster 3, the first lens position adjuster 4, the LED adjustable light source 5, the laser display differentiation board 6 and the photoelectric differentiation board combination medium 7 are connected by a screw thread.
Preferably, the second high-definition CCD camera 16, the second high-power lens 17, the second lens focal length adjuster 18, the second lens position adjuster 19, the optical display differentiation plate 20, the optical display differentiation plate focal length adjusting device 21, the optical display differentiation plate centering adjusting device 22, the beam splitter prism adjusting devices 23, 5: the 5-beam splitter prism 24 and the uniform light plate 25 are connected by an aluminum piece 25.
Preferably, the first high-definition CCD camera 1 and the second high-definition CCD camera 16 are connected to the computer monitor 27 through wires.
The utility model has the advantages of simple structure, reasonable in design saves occupation of land space and area greatly, and the debugging precision is high, the debugging is fast, and the error is little, avoids people's eye fatigue and danger, eliminates people's eye sight poor, has very big promotion to surveying instrument's precision and unity.
Drawings
Fig. 1 is a schematic view of the calibration frame of the present invention.
Fig. 2 is a schematic view of the structural principle of the present invention.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, in which like reference numerals refer to like parts in the drawings. For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure of the product.
As shown in fig. 1 and 2, the utility model relates to a reverse visual collimator, including collimator 11, collimator 11 includes laser display part, optical display part and optical part, laser display part and optical part set up on a horizontal line, optical display part sets up perpendicularly between laser display part and optical part, the middle part symmetry of collimator 11 is equipped with two whole fine tuning devices 13 of collimator, the lower part of two whole fine tuning devices 13 of collimator is equipped with two whole rough tuning devices 14 of collimator, be equipped with whole fixing device 15 of collimator between two whole rough tuning devices 14 of collimator; the laser display part consists of a first high-definition CCD camera 1, a first high-power lens 2, a first lens focal length regulator 3, a first lens position regulator 4, an LED adjustable light source 5, a laser display differentiation plate 6 and a photoelectric differentiation plate combination medium 7 in sequence from front to back; the optical display part is composed of a second high-definition CCD camera 16, a second high-power lens 17, a second lens focal length adjuster 18, a second lens position adjuster 19, an optical display differentiation plate 20, an optical display differentiation plate focal length adjusting device 21, an optical display differentiation plate central adjusting device 22, a beam splitter prism adjusting device 23 and a beam splitter prism adjusting device 5 from front to back in sequence: 5, a beam splitter prism 24 and a uniform light plate 25; the optical part consists of a calibration differentiation plate 8, a double differentiation plate centering adjusting device 9, a double differentiation plate focal length adjusting device 10 and an optical objective lens 12 from front to back in sequence. The high-definition CCD camera comprises a first high-definition CCD camera 1, a first high-power lens 2, a first lens focal length adjuster 3, a first lens position adjuster 4, an LED adjustable light source 5, a laser display differentiation plate 6 and a photoelectric differentiation plate combined medium 7 which are connected through threads. Second high definition CCD camera 16, second high power camera lens 17, second camera lens focus regulator 18, second camera lens position regulator 19, optical display differentiation board 20, optical display differentiation board focus adjusting device 21, optical display differentiation board adjusting device 22 placed in the middle, beam splitter prism adjusting device 23, 5: the 5-beam splitter prism 24 and the uniform light plate 25 are connected by an aluminum piece. The first high-definition CCD camera 1 and the second high-definition CCD camera 16 are connected with a computer display 27 through leads.
The working principle of the utility model is as follows: since the optical display differentiation plate 20, the laser display differentiation plate 6 and the calibration differentiation plate 8 are all completely located on the focal plane of the objective lens, respectively, only the parallel light and the laser parallel to the light pipe objective lens can be displayed on the focal plane of the objective lens, that is, on the differentiation plate, and displayed on the center of the differentiation plate. It has no influence on the incident parallel light and the height of the laser, but is very sensitive to the incident angle. By utilizing the characteristic of the collimator, the correction of the optical reference and the laser pointing point of the surveying instrument can be carried out in two steps, the first step is used for correcting the optical reference part of the surveying instrument, and the correction principle is as follows: the instrument is fixed and leveled by a standard level, theodolite or total station, the objective lens group of the instrument is aligned with the objective lens of the collimator and adjusted to infinity. The utility model discloses key reverse principle as follows: when uniform light passes through the surveying instrument, a cross-shaped wire is arranged on a focal plane of an objective lens group of the surveying instrument, so that parallel light beams emitted by the objective lens group of the surveying instrument are emitted to a collimator objective lens, then the parallel light beams are imaged on a correction differentiation plate and an optical display differentiation plate respectively through a beam splitter prism, then a medium is arranged behind the correction differentiation plate, the light path is cut off, the other path of image imaged on the optical display differentiation plate is imaged on a high-definition CCD camera through a high-power lens, and generated analog signals are transmitted to a display screen through a data line. Therefore, the position difference between the cross-shaped wire of the surveying and mapping instrument and the datum line of the light pipe can be visually seen through the display screen, and the cross-shaped wire of the surveying and mapping instrument can be debugged in place at one time. The eye lens of a repeated observation instrument of human eyes is omitted, the debugging speed is greatly improved, the visual difference of the human eyes and the eye fatigue observation difference of the human eyes are also omitted, and the debugging precision is improved.
The second step of the calibration principle of the laser pointing point of the surveying instrument: the laser pointing point of the surveying instrument is consistent with the center of the optical cross-shaped filament and is on the focal plane of the objective lens group of the surveying instrument. When the laser point switch of the surveying instrument is turned on, the laser beam emitted by the surveying instrument is emitted to the objective lens of the collimator, and is divided into two paths of laser by the beam splitter prism of the collimator, and the two paths of laser are finally imaged on the correcting and differentiating board and the optical display differentiating board respectively, and the optical display differentiating board 20 is plated with a 650 narrow-band cut-off film, so that the one path of laser is stopped at the position. The other path of laser light is converged on the center of the calibration differentiation plate 8, the size of the laser light is reduced by ten times, the brightness is increased by ten times, the laser light is strong, light rays are weakened, the photoelectric differentiation plate and the medium 7 play a role in weakening the laser light, the photoelectric differentiation plate and the medium 7 are semi-transparent films with the thickness of about 0.01MM, the visible light transmittance range is 400-780 nanometers, the laser light penetrates through the photoelectric differentiation plate and reaches the center of the optical display differentiation plate 20 through the medium 7, the laser display differentiation plate 6 and the calibration differentiation plate 8 are concentric and coaxial and are carved with cross scale values, images of the display differentiation plate collected through a high-power lens pass through a high-definition CCD camera, and are finally connected to a screen through data lines. The size and the position of the laser pointing point can be observed conveniently, and the size of the laser point is used for distinguishing whether the laser pointing point is on the focal plane of the objective lens group of the surveying instrument. The position of the laser point is used for distinguishing whether the laser pointing point is on the same optical axis with the cross-shaped line of the checked drawing instrument. Therefore, debugging personnel can visually see the position information of the laser point through the display screen, and can adjust the laser pointing point to the corresponding position at one time, so that the debugging speed and the adjusting precision are greatly improved, and the damage caused by the direct observation of the laser by human eyes is avoided.
The laser display part of the utility model is used for projecting the image of the laser position of the surveying instrument on the display screen; the optical display part is used for projecting the images of the optical cross reference in the surveying and mapping instrument and the cross division plate in the light pipe onto a display screen, the optical part enables the light pipe to generate an infinite target value, the material standard is aluminum alloy, and the high-precision standard is ceramic.
The function of each component in the utility model is described as follows:
(1) first high definition CCD camera 1: the laser scanning device is used for collecting the position of a laser point or a laser line on a reticle, so that debugging personnel can conveniently make debugging judgment;
(2) first high power lens 2: respectively providing clear images for the first high-definition CCD camera 1;
(3) first lens focal length adjuster 3: the device is used for debugging the display definition of the laser display differentiation board 6 in the screen;
(4) first lens position adjuster 4: the center position for adjusting the display of the laser display differentiation plate 6 in the screen;
(5) LED adjustable light source 5: the laser display differentiation board 6 is used for lighting the laser display differentiation board, so that the focal length and the definition of the collimator are conveniently adjusted, and the laser display differentiation board is used for performing a reflection auxiliary effect on the laser emitted into the collimator, because the intensity of the laser emitted into the collimator is reduced by 10 times and is also increased by 10 times when the laser is emitted into the collimator onto the differentiation board, a CCD camera is prevented from acquiring images due to too strong light;
(6) laser-revealed differentiation plate 6: the display provides a concentric and coaxial reference value, and the laser display differentiation plate 6 and the calibration differentiation plate 8 are concentrically and coaxially combined into a whole;
(7) photoelectric differentiation plate binding medium 7: the medium plays a role of ground glass, is used for radiating LED light on the laser display differentiation plate 6 in a scattered manner, and has a function of weakening laser;
(8) calibration of the differentiation plate 8: providing a reference value concentric and coaxial with the objective lens for the collimator to ensure the collimation degree of the optical part of the collimator;
(9) double-differentiation plate centering adjusting device 9: for adjusting the differentiation plate to the center of the optical axis of the optical objective 12;
(10) double differentiation board focus adjusting device 10: the device is used for strictly adjusting the differentiation plate to the focal plane of the optical objective lens 12 to ensure that the image of the differentiation plate is in the clearest state;
(11) the collimator 11: the device is used for fixing the light pipe objective lens 12, the laser display differentiation plate 6, the calibration differentiation plate 8 and the optical display differentiation plate 20, aluminum alloy sections are adopted, ceramic materials are adopted with high precision, and because the ceramic is subjected to the minimum temperature coefficient change, a stable light path environment can be provided for the light pipe objective lens 12, the laser display differentiation plate 6, the calibration differentiation plate 8 and the optical display differentiation plate 20, and the interference of external light at temperature is avoided;
(12) the optical objective lens 12: an important part objective lens on the collimator 11, and the focal length is F550;
(13) two collimator integral fine-tuning devices 13: for fine-tuning the collimator 11 to a desired angle and position;
(14) two collimator gross adjustment mechanisms 14: fine-tuning the collimator 11 to a desired angle and position;
(15) collimator integral fixing device 15: for fixing the collimator 11 to a desired position frame;
(16) second high-definition CCD camera 16: the position of an optical cross reference line for collecting a surveying instrument on the optical display differentiation plate 20 is convenient for debugging personnel to adjust in place at one time;
(17) second high power lens 17: providing a clear and stable image for the second high-definition CCD camera 16;
(18) the second lens focal length adjuster 18: the device is used for adjusting the definition and the direction of the optical display differentiation board 20 displayed in the screen;
(19) second lens position adjuster 19: for adjusting the central position of the optical display differentiation plate 20 displayed in the screen;
(20) optical display differentiation plate 20: the back of the optical display differentiation board 20 is plated with a narrow-band light filtering film, 650-band laser is cut off to pass through, corresponding scales are engraved on the optical display differentiation board 20 to provide a reference value for optical alignment, and the optical display differentiation board 20, the beam splitter prism adjusting device 23 and the calibration differentiation board 8 form a set of two-optical-path system with the same focal plane, the same optical axis and the same center;
(21) optical display differentiation plate focal distance adjusting device 21: the optical display differentiation plate 20 is strictly adjusted to the focal plane of the objective lens, so that the image of the differentiation plate is in the clearest state;
(22) optical display differentiation plate centering adjustment device 22: for adjusting the optical display differentiation plate to the optical center of the optical objective 12;
(23) beam splitter prism adjusting apparatus 23: the device is used for adjusting the double light paths to 90 degrees;
(24)5: 5 beam splitting prism 24: for separating the laser light path from the optical light path.
(25) Uniform light plate 25: a uniform parallel beam of light is provided to the optical display system. The optical display differentiation plate 20 can be conveniently and stably imaged without being interfered by external light.
The utility model discloses a reverse visual collimator's differentiation board explains: the calibration differentiation plate 8 and the laser display differentiation plate 6 are formed by combining two differentiation plates which are concentric and have the same optical axis and different scale values. One is a calibration differentiation plate with a small scale value, the actual scale value is 0.05MM per grid, and the angle value is expressed in a collimator tube for about 20 arc seconds (measured by theodolite). One is a laser display differentiation board, the scale value is large, the actual scale value is 0.1MM per grid, and the angle value is expressed in a collimator for about 40 arc seconds (measured by a theodolite). The optical display showed that the differentiation plate 20 and the calibration differentiation plate 8 were consistent in scale value. The two differentiation plates are adjusted to the same focal plane and the same optical axis in the adjustment of the light pipe, which is the key point of the utility model. Also, calibration differentiation board 8 seems to be meaningful little in entire system, but it is most important when entire system self is proofreaded really, and it is the benchmark of entire system accuracy, when the accurate surveying instrument of timing play in addition, needs a plurality ofly the utility model discloses reverse visual parallel light nest of tubes is in the same place, carries out the diversified correction of multi-angle to surveying instrument. When a plurality of the reverse visual parallel light pipes are combined together, the calibration and differentiation plate 8 is a plurality of the important basis and the benchmark for installing the reverse visual parallel light pipes together.
In conclusion, after the reverse visual photoelectric integrated collimator is utilized, a debugging person can finish the light path reference debugging and the laser pointing reference debugging of the surveying and mapping instrument by observing one display screen in a space of 1 square meter, so that the occupied space and the area are greatly saved, more than 80% of the occupied space can be saved for the factory adjustment work, and batch debugging can be realized. Meanwhile, the debugging speed is improved by more than ten times compared with the prior debugging speed, and the time for repeatedly observing the ocular lens by human eyes for more than ten times is saved. The visual difference of eye lens for human eye observation is saved. The eyepieces are observed for a long time by human eyes, so that human eye fatigue and reading errors are reduced. The consistency of debugging instruments is the same. Debugging precision is improved by 2 times than before. The human eyes are prevented from directly observing laser and burning the human eyes.
The utility model discloses final purpose is to install several or dozens of such systems even on being surveyed the different horizontal angle and the vertical angle of drawing the instrument by the school more, through multichannel video cassette recorder gather a display screen on, come to carry out the diversified correction of multi-angle to surveying instrument, promote surveying instrument's precision and speed once more. For example: the electron theodolite just needs 4 sets at minimum when the alignment the utility model discloses the system comes its correction because the electron theodolite has the diaxon rotatory, horizontal rotation axis and vertical rotation axle. A minimum of two detection points are required on each rotating shaft to detect the straightness and angle of each rotating shaft. So need two sets of at every epaxial different angle installations of rotation the utility model discloses the system. Two rotation axes require 4 sets. Have because different surveying instrument has different correction angles, different producers have different technology and required precision in addition, and this will confirm specific a set of correction station according to the different required technology precision of different producers and use several sets the utility model discloses reverse visual collimator. Not all of which are described herein.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; or communication between the interior of the two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.
Claims (4)
1. A counter-vision collimator comprising a collimator (11), the collimator (11) comprising a laser display portion, an optical display portion and an optical portion, characterized in that: the laser display part and the optical part are arranged on the same horizontal line, the optical display part is vertically arranged between the laser display part and the optical part, two collimator integral fine-tuning devices (13) are symmetrically arranged in the middle of the collimator (11), two collimator integral rough-tuning devices (14) are arranged at the lower parts of the two collimator integral fine-tuning devices (13), and a collimator integral fixing device (15) is arranged between the two collimator integral rough-tuning devices (14);
the laser display part consists of a first high-definition CCD camera (1), a first high-power lens (2), a first lens focal length regulator (3), a first lens position regulator (4), an LED adjustable light source (5), a laser display differentiation plate (6) and a photoelectric differentiation plate combination medium (7) from front to back in sequence;
the optical display part sequentially consists of a second high-definition CCD camera (16), a second high-power lens (17), a second lens focal length regulator (18), a second lens position regulator (19), an optical display differentiation plate (20), an optical display differentiation plate focal length regulating device (21), an optical display differentiation plate centering regulating device (22), a beam splitter prism regulating device (23), a 5: 5 beam splitter prism (24) and a uniform light plate (25) from front to back;
the optical part consists of a calibration differentiation plate (8), a double differentiation plate centering adjusting device (9), a double differentiation plate focal length adjusting device (10) and an optical objective lens (12) from front to back in sequence.
2. A reverse visual collimator according to claim 1 in which: the high-definition CCD camera is characterized in that the first high-definition CCD camera (1), the first high-power lens (2), the first lens focal length adjuster (3), the first lens position adjuster (4), the LED adjustable light source (5), the laser display differentiation board (6) and the photoelectric differentiation board combined medium (7) are connected through threads.
3. A reverse visual collimator according to claim 1 in which: the device comprises a second high-definition CCD camera (16), a second high-power lens (17), a second lens focal length adjuster (18), a second lens position adjuster (19), an optical display differentiation plate (20), an optical display differentiation plate focal length adjusting device (21), an optical display differentiation plate centering adjusting device (22), a light splitting prism adjusting device (23), a 5: 5 light splitting prism (24) and an even light plate (25) which are connected through an aluminum piece.
4. A reverse visual collimator according to claim 1 in which: the first high-definition CCD camera (1) and the second high-definition CCD camera (16) are connected with a computer display (26) through wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921399317.1U CN210346718U (en) | 2019-08-21 | 2019-08-21 | Reverse visual collimator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921399317.1U CN210346718U (en) | 2019-08-21 | 2019-08-21 | Reverse visual collimator |
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| Publication Number | Publication Date |
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| CN210346718U true CN210346718U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921399317.1U Withdrawn - After Issue CN210346718U (en) | 2019-08-21 | 2019-08-21 | Reverse visual collimator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455315A (en) * | 2019-08-21 | 2019-11-15 | 南阳天正精科自动化设备有限公司 | A kind of reverse visual parallel light tube |
-
2019
- 2019-08-21 CN CN201921399317.1U patent/CN210346718U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455315A (en) * | 2019-08-21 | 2019-11-15 | 南阳天正精科自动化设备有限公司 | A kind of reverse visual parallel light tube |
| CN110455315B (en) * | 2019-08-21 | 2024-04-02 | 南阳天正精科自动化设备有限公司 | Reverse visual collimator |
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