CN109940266B - Lens positioning device and positioning method - Google Patents
Lens positioning device and positioning method Download PDFInfo
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- CN109940266B CN109940266B CN201910285953.XA CN201910285953A CN109940266B CN 109940266 B CN109940266 B CN 109940266B CN 201910285953 A CN201910285953 A CN 201910285953A CN 109940266 B CN109940266 B CN 109940266B
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Abstract
The embodiment of the invention provides a lens positioning device and a positioning method, comprising the following steps: the laser device comprises a base, a laser chip, a first support, a probe, a second support, a chuck, a clamping seat and a target lens, wherein the first support is fixed on the base, the laser chip is fixed on the first support, the probe is fixed on one side of the laser chip, the second support is fixed on the base, the second support is perpendicular to the first support, the probe is installed on the second support, the clamping seat is installed on the base, the chuck is installed on the clamping seat, and the target lens is located above the laser chip. According to the invention, the position of the target lens is adjusted in real time by comparing the difference between the target light spot and the preset light spot in shape, position and size until the target light spot and the preset light spot are completely overlapped, which indicates that the target light spot reaches the optimal position, and the position adjustment of the target lens is converted into the adjustment of the target light spot, so that the complexity of the adjustment is simplified, and the automatic positioning of the target lens is realized.
Description
Technical Field
The embodiment of the invention relates to the technical field of laser, in particular to a lens positioning device and a positioning method.
Background
In the field of laser technology, lenses on a tray are often required to be mounted on chips, and the traditional method usually uses manual operation, but the efficiency is low through the manual method, the workload is large, and the industrial requirement is difficult to adapt.
Therefore, a lens positioning apparatus and a positioning method are needed.
Disclosure of Invention
In view of the foregoing problems, embodiments of the present invention provide a lens positioning apparatus and a positioning method.
In a first aspect, an embodiment of the present invention provides a lens positioning apparatus, including: a base, a laser chip, a first bracket, a probe, a second bracket, a chuck, a holder and a target lens, wherein the first support is fixed on the base, the laser chip is fixed on the first support, the probe is fixed on one side of the laser chip, the second bracket is fixed on the base, the second bracket is vertical to the first bracket, the probe is arranged on the second bracket, the holder edge is arranged on the base, the chuck is arranged on the holder, the target lens is positioned above the laser chip, the probe is used for powering on the laser chip, the laser chip is used for emitting laser after being powered on, the chuck is used for clamping a target lens, the target lens is used for reflecting the laser emitted by the laser chip, and the probe is used for detecting the laser reflected by the target lens.
In a second aspect, an embodiment of the present invention provides a lens positioning method, including:
powering up the laser chip through the probe;
the laser chip emits laser light;
if the laser emitted by the laser chip is reflected by the target lens, the laser can be detected by the probe;
and if the target light spot detected by the probe is judged to be the same as the preset light spot, the chuck is utilized to place the target lens on the laser chip, and the target light spot is formed by the laser reflected by the target lens.
According to the lens positioning device and the positioning method provided by the embodiment of the invention, the position of the target lens is adjusted in real time by comparing the difference between the target light spot and the preset light spot until the target light spot and the preset light spot are completely overlapped, the target light spot reaches the optimal position, the position adjustment of the target lens is converted into the adjustment of the target light spot, the adjustment complexity is simplified, and the automatic positioning of the target lens is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a lens positioning apparatus according to an embodiment of the present invention;
fig. 2 is a flowchart of a lens positioning method according to an embodiment of the present invention.
Reference numerals:
101, a base; 102, a laser chip; 103, a first bracket;
104, a probe; 105, a probe; 106, a synchronous belt;
107, a chuck; 108, a holder; 109, objective lens.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a lens positioning apparatus according to an embodiment of the present invention, as shown in fig. 1, the apparatus includes: a base 101, a laser chip 102, a first support 103, a probe 104, a probe 105, a second support, a collet 107, a holder 108 and a target lens 109, wherein the first support 103 is fixed on the base 101, the laser chip 102 is fixed on the first support 103, the probe 104 is fixed on one side of the laser chip 102, the second support is fixed on the base 101, the second support is perpendicular to the first support 103, the probe 105 is installed on the second support, the holder 108 is installed on the base 101, the collet 107 is installed on the holder 108, the target lens 109 is located above the laser chip 102, the probe 104 is used for powering up the laser chip 102, the laser chip 102 is used for emitting laser after being powered up, the collet 107 is used for holding the target lens 109, the target lens 109 is configured to reflect the laser light emitted by the laser chip 102, and the probe 105 is configured to detect the laser light reflected by the target lens 109.
Specifically, the base 101 is a bottom plate portion of the apparatus, other modules are all mounted on the base 101, the first support 103 is mounted on the base 101 along a vertical direction, the laser chip 102 is fixed at an upper end of the first support 103, the probe 104 is fixed at one side of the laser chip 102, the second support is fixed on the base 101 along a horizontal direction, the second support is perpendicular to the first support 103, the probe 105 is mounted on the second support, and the second support is mainly used for providing a supporting function for the probe 105.
A collet 108 is mounted on the base 101 in a horizontal direction, a collet 107 is mounted at a front end of the collet 108, and the collet 107 sandwiches the target lens 109 such that the target lens 109 is positioned above the laser chip 102.
It should be noted that the re-packaging form of the probe, i.e. the sensor, is the most basic unit of the sensor, and the sensor is packaged by a reasonable electronic circuit and an external packaging structure, so that the sensor has some independent functional components required by us, and the probe is the same as the sensor, and is generally divided into several categories, such as a thermal probe, a photosensitive probe, a gas-sensitive probe, a force-sensitive probe, a magnetic-sensitive probe, a humidity-sensitive probe, a sound-sensitive probe, a radiation-sensitive probe, a color-sensitive probe, a flavor-sensitive probe, a video probe and the like, according to the basic sensing function.
In the embodiment of the present invention, a photosensitive probe is used to capture the laser light emitted from the laser chip 102.
In use, the chuck 107 holds the target lens 109 at the upper end of the laser chip 102, the probe 104 energizes the laser chip 102, the laser chip 102 emits laser light, and the laser light is irradiated to a position in the direction of the probe 105 by reflection of the target lens 109.
If the probe 105 can capture the laser reflected by the target lens 109, a target spot is formed, obviously, the target spot changes with the change of the position of the target lens 109, the target spot and the preset spot can be completely overlapped by adjusting the position of the target lens 109, when the target spot and the preset spot are overlapped, the target lens 109 is in the optimal position, and at this time, the target lens 109 is placed on the laser chip 102.
The target spot and the preset spot can be completely overlapped, and the target spot is identical to the preset spot in size, shape and position.
The preset light spot is obtained through a series of complex calculations according to the positional relationship among the laser chip 102, the target lens 109 in an ideal state, and the probe 105, and the shape, size, and position of the preset light spot are stored and used as a reference standard.
According to the lens positioning device provided by the embodiment of the invention, the position of the target lens is adjusted in real time by comparing the difference between the target light spot and the preset light spot until the target light spot and the preset light spot are completely overlapped, the target light spot reaches the optimal position, the position adjustment of the target lens is converted into the adjustment of the target light spot, the complexity of the adjustment is simplified, and the automatic positioning of the target lens is realized.
On the basis of the above embodiment, preferably, the probe 105 is further configured to detect a divergence angle of the laser light reflected by the objective lens 109.
The probe 105 is driven to move by the synchronous belt 106, so that the probe 105 adjusts the position until the probe 105 can capture the divergence angle of the reflected laser, and the divergence angle can be used for evaluating the quality of the target light spot.
On the basis of the above embodiment, the method further includes: the first controller is connected with the probe 105 and used for sending a control instruction according to a comparison result of the target light spot and a preset light spot.
Specifically, the lens positioning device further comprises a first controller, the first controller can be an internal controller installed on the base 101 or other external controllers, the first controller mainly generates a control instruction according to a comparison result of the target light spot and the preset light spot and sends the control instruction out, and the control instruction includes deviation conditions of the target light spot and the preset light spot in size, position and shape.
On the basis of the above embodiment, it is preferable to further include: and the second controller is connected with the chuck 107 and is used for receiving the control command and controlling the chuck 107 to move according to the control command.
Specifically, the lens positioning apparatus further includes a second controller, which may be an internal controller installed on the base 101 or another external controller, and the second controller is configured to receive the control command sent by the first controller and control the movement of the chuck 107 according to information contained in the control command, so as to adjust the pose of the target lens 109.
The embodiment of the invention provides an adjusting method of a target light spot and a preset light spot, and in the actual use process, the pose of a target lens can be adjusted according to the actual condition of the target light spot instead of blind adjustment, so that the adjusting efficiency is improved.
Fig. 2 is a flowchart of a lens positioning method according to an embodiment of the present invention, as shown in fig. 2, the method includes:
s1, powering up the laser chip through the probe;
s2, the laser chip emits laser;
s3, if the laser emitted by the laser chip is reflected by the target lens, the laser can be detected by the probe;
and S4, if the target light spot detected by the probe is judged to be the same as a preset light spot, the chuck is utilized to place the target lens on the laser chip, and the target light spot is formed by the laser reflected by the target lens.
Firstly, a probe is utilized to electrify a laser chip, the laser chip is electrified to emit laser, meanwhile, the initial position of a target lens is positioned above the laser chip, if the laser emitted by the laser chip is reflected by the target lens at the moment, the laser can be just detected by the probe to form a target light spot, the size, the position and the shape of the target light spot are compared with a preset light spot, if the size, the position and the shape of the target light spot are the same as those of the preset light spot, the target lens is in the optimal position and the optimal posture at the moment, and the target lens is installed on the laser chip according to the position and the posture.
On the basis of the above embodiment, it is preferable to further include: if the laser emitted by the laser chip cannot be detected by the probe after being reflected by the target lens, the posture of the target lens is adjusted by using the chuck until the laser emitted by the laser chip can be detected by the probe after being reflected by the target lens.
The position of the target lens is continuously adjusted through the chuck, so that light emitted by the laser chip can be detected by the probe after being reflected by the target lens, and a target light spot is formed.
On the basis of the foregoing embodiment, preferably, if it is determined that the target light spot is different from the preset light spot, the pose of the target lens is adjusted by using the chuck until the target light spot is the same as the preset light spot, and the target lens is placed on the laser chip.
If the target light spot detected by the probe is different from the preset light spot in at least one of the size, the position and the shape, the position and the posture of the target lens need to be adjusted until the target light spot is completely overlapped with the preset light spot. The position and posture of the objective lens at the time of coincidence are the optimum posture at which the objective lens is mounted on the laser chip.
On the basis of the foregoing embodiment, preferably, if it is determined that the target light spot is different from the preset light spot, adjusting the pose of the target lens by using the chuck specifically includes:
if the target light spot is judged to be different from the preset light spot in position and/or size, the position of the target lens is adjusted by using the chuck;
and if the target light spot is judged to be different from the preset light spot in shape, adjusting the inclination angle of the target lens by using the chuck.
Specifically, the position of the target lens is specifically adjusted according to the difference between the target light spot and the preset light spot, and the adjusting method comprises the following steps:
if the target light spot and the preset light spot are different in size and position, the target light spot and the preset light spot can be the same by adjusting the position of the target lens.
If the target light spot and the preset light spot are different in shape, the target light spot and the preset light spot can be made to be the same through adjusting the inclination angle of the target lens.
If the target light spot and the preset light spot are different in size, position and shape, the inclination angle and the position of the target lens can be adjusted simultaneously to enable the target light spot to be the same as the preset light spot.
The embodiment of the invention provides an adjusting method of a target light spot and a preset light spot, the position of a target lens needs to be adjusted when the size and the position of the target light spot are different from those of the preset light spot, the inclination angle of the target lens needs to be adjusted when the shape of the target light spot is different from that of the preset light spot, and in the actual use process, the pose of the target lens can be adjusted according to the actual condition of the target light spot instead of blind adjustment, so that the adjusting efficiency is improved.
According to the lens positioning method provided by the embodiment of the invention, the position of the target lens is adjusted in real time by comparing the difference between the shape, the position and the size of the target light spot and the preset light spot, until the target light spot and the preset light spot are completely overlapped, the target light spot reaches the optimal position, the position adjustment of the target lens is converted into the adjustment of the target light spot, the complexity of the adjustment is simplified, and the automatic positioning of the target lens is realized.
On the basis of the above embodiment, it is preferable to further include:
driving the probe to move to adjust the position of the probe;
acquiring a divergence angle of laser emitted by the laser chip through the probe;
and evaluating the quality of the target light spot according to the divergence angle.
Specifically, the synchronous belt 106 is used to drive the probe to move, the probe moves to detect the divergence angle of the laser beam, and the divergence angle is one of the criteria for evaluating the quality of the laser spot.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A lens positioning method, comprising:
powering up the laser chip through the probe; the probe is fixed on one side of the laser chip, the laser chip is fixed on a first support, and the first support is fixed on the base;
the laser chip emits laser light;
if the laser emitted by the laser chip can be detected by the probe after being reflected by the target lens, judging whether the target light spot is the same as the preset light spot; the target lens is positioned above the laser chip, the probe is installed on a second support, the second support is perpendicular to the first support, the second support is fixed on the base, and the target light spot is formed by laser reflected by the target lens;
if the target light spot is the same as the preset light spot, placing the target lens on the laser chip by using a chuck; the clamping head is arranged on a clamping seat, and the clamping seat is arranged on the base;
if the target light spot is different from the preset light spot, adjusting the pose of the target lens by using the chuck until the target light spot is the same as the preset light spot, and placing the target lens on the laser chip;
if the target light spot is different from the preset light spot, the pose of the target lens is adjusted by using the chuck, and the method specifically comprises the following steps:
if the target light spot is different from the preset light spot in position and/or size, adjusting the position of the target lens by using the chuck;
and if the target light spot is different from the preset light spot in shape, adjusting the inclination angle of the target lens by using the chuck.
2. The method of claim 1, further comprising:
if the laser emitted by the laser chip cannot be detected by the probe after being reflected by the target lens, the posture of the target lens is adjusted by using the chuck until the laser emitted by the laser chip can be detected by the probe after being reflected by the target lens.
3. The method of claim 1, further comprising:
driving the probe to move to adjust the position of the probe;
acquiring a divergence angle of laser emitted by the laser chip through the probe;
and evaluating the quality of the target light spot according to the divergence angle.
4. The method of claim 1, wherein the second support is a timing belt for driving the probe in motion.
5. The method of claim 1, wherein the probe is further configured to detect a divergence angle of the laser light reflected by the target lens.
6. The method according to claim 1, wherein the probe is connected with a first controller, and the first controller is used for sending a control command according to the comparison result of the target light spot and the preset light spot.
7. The method of claim 6, wherein the chuck is connected to a second controller, the second controller configured to receive the control commands and control the chuck to move in accordance with the control commands.
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| CN201910285953.XA CN109940266B (en) | 2019-04-10 | 2019-04-10 | Lens positioning device and positioning method |
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| CN201910285953.XA CN109940266B (en) | 2019-04-10 | 2019-04-10 | Lens positioning device and positioning method |
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| CN109940266B true CN109940266B (en) | 2020-07-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07249235A (en) * | 1994-03-11 | 1995-09-26 | Fujitsu Ltd | Astigmatism correcting method for semiconductor laser optical system |
| JP2001144362A (en) * | 1999-11-15 | 2001-05-25 | Sigma Koki Kk | Semiconductor laser device and manufacturing method therefor |
| CN101439441A (en) * | 2008-12-29 | 2009-05-27 | 广州瑞通千里激光设备有限公司 | Optical fiber laser dynamic focusing vibration mirror scanning type spot welding system and welding method thereof |
| CN201828716U (en) * | 2010-06-25 | 2011-05-11 | 北京高普乐光电科技有限公司 | Collimation device capable of controlling spot size |
| CN104375273B (en) * | 2014-10-21 | 2016-11-09 | 武汉锐科光纤激光技术股份有限公司 | A kind of high-power semiconductor laser spot shaping device |
| CN204178059U (en) * | 2014-11-03 | 2015-02-25 | 南京中科神光科技有限公司 | The self-checking device of laser module collimation lens |
| CN107706736A (en) * | 2017-10-23 | 2018-02-16 | 深圳市杰普特光电股份有限公司 | Semiconductor laser fast axis collimation equipment |
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