CN106501945B - System and method for homogenizing laser spots output by semiconductor laser - Google Patents
System and method for homogenizing laser spots output by semiconductor laser Download PDFInfo
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- CN106501945B CN106501945B CN201611115765.5A CN201611115765A CN106501945B CN 106501945 B CN106501945 B CN 106501945B CN 201611115765 A CN201611115765 A CN 201611115765A CN 106501945 B CN106501945 B CN 106501945B
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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
- G02B27/0933—Systems for active beam shaping by rapid movement of an element
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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
- G02B27/0994—Fibers, light pipes
Abstract
The invention discloses a system and a method for homogenizing laser spots output by a semiconductor laser, wherein the system comprises a tail fiber output semiconductor laser for supplementing light as a light source, an optical fiber vibration device connected with the tail fiber output semiconductor laser and used for homogenizing the laser spots output by optical fibers, an optical lens group connected with the optical fiber vibration device and used for collimating or diverging laser output beams, and a zooming device connected with the optical lens group and used for driving the optical lens group to move. The invention reduces the influence of laser speckle on the camera system by adopting the vibrating tail fiber, so that the light emitted by the laser is clearer and more uniform.
Description
Technical Field
The invention relates to the technical field of laser supplementary lighting, in particular to a system and a method for homogenizing laser spots output by a semiconductor laser.
Background
In the field of laser auxiliary lighting, particularly for night vision monitoring auxiliary supplementary lighting, in order to monitor a wider and longer range, the power requirement on laser is higher and higher, and the power requirement is as high as more than 10 watts. However, due to the light emitting power of a single chip laser, it is difficult to achieve a light emitting power of 10 watts or more due to process and cost problems. Therefore, the tail fiber output semiconductor laser is generally selected for the existing remote laser light supplement lamp, however, the light beam quality of the tail fiber output semiconductor laser has a serious speckle phenomenon, the image quality obtained by the camera system when the camera system uses the light supplement lamp is poor, the requirement of night vision monitoring cannot be met, and inconvenience is brought to obtaining a clear monitoring image.
Speckle phenomenon can be improved by the vibration device, but vibration in the optical fiber vibration device in the prior art can cause too fast fatigue and even breakage phenomenon to the optical fiber due to multi-directional pulling and twisting.
Accordingly, there is a need for improvements and developments in the art.
Disclosure of Invention
In view of the defects of the prior art, the present invention aims to provide a system and a method for homogenizing laser spots output by a semiconductor laser, and aims to solve the technical problem that vibration in an optical fiber vibration device in the prior art causes an excessive fatigue and even breakage phenomenon on an optical fiber due to multi-directional pulling and twisting.
The technical scheme of the invention is as follows:
the utility model provides a system for carry out dodging to the laser facula of semiconductor laser output, wherein, the system is including being used for carrying out the semiconductor laser of light filling as the light source, with what tail optical fiber output semiconductor laser was connected is used for carrying out dodging to the facula of optic fibre output laser optical fiber vibrating device, with what optic fiber vibrating device was connected is used for carrying out the optics mirror group of collimation or divergent processing to laser output light beam, and with what the optics mirror group was connected is used for driving the zooming device that the optics mirror group removed.
The system for homogenizing laser facula output by the semiconductor laser comprises a base, a vibration mechanism and a driving mechanism, wherein the vibration mechanism is arranged on the base and used for driving optical fibers to move, and the driving mechanism is arranged on the base and contacted with the vibration mechanism and used for driving the vibration mechanism to vibrate.
The system for homogenizing laser facula to semiconductor laser output, wherein, optic fibre vibrating device includes the base, sets up be used for driving the vibration mechanism of optic fibre vibration on the base, set up on the base with vibration mechanism contact be used for driving vibration mechanism wobbling actuating mechanism.
The system for homogenizing laser facula of semiconductor laser output, wherein, actuating mechanism is including setting up the motor of one side of base, and setting the opposite side of base, and with motor fixed connection be used for under the drive of motor drive through eccentric rotation drive actuating mechanism vibrating eccentric part, the motor is used for the drive eccentric part.
The system for homogenizing laser spots output by the semiconductor laser is characterized in that the eccentric component is a cam.
The system for homogenizing laser spots output by the semiconductor laser comprises an eccentric shaft and a bearing, wherein one end of the eccentric shaft is fixedly connected with a motor shaft of a motor, and the other end of the eccentric shaft is sleeved with the bearing.
The system for homogenizing the laser facula output by the semiconductor laser is characterized in that the rotating speed of the motor ranges from 3000 to 5000r/min.
The system for homogenizing the laser facula output by the semiconductor laser is characterized in that the amplitude range of the optical fiber is 1-3mm.
The dodging method of the system for dodging the laser spots output by the semiconductor laser comprises the following steps:
A. when the tail fiber is detected to output laser light from the semiconductor laser, the optical fiber vibration device arranged on the optical fiber drives the optical fiber to vibrate with certain amplitude;
B. the laser output after the optical fiber vibration is obtained is collimated by the optical lens group and the zooming device, and then the laser after the light is homogenized is generated.
The dodging method of the system for dodging the laser facula output by the semiconductor laser comprises the following steps that the amplitude of an optical fiber ranges from 1 mm to 3mm.
The invention provides a system and a method for homogenizing laser spots output by a semiconductor laser, wherein the laser spots generated by the laser output by an optical fiber have homogenization through an optical fiber vibration device, so that the light emitted by the laser is clearer and more uniform.
Drawings
Fig. 1 is a schematic structural diagram of a system for homogenizing a laser spot output by a semiconductor laser according to a preferred embodiment of the present invention.
Fig. 2a is a schematic diagram of a first view angle structure of an optical fiber vibration device in a first embodiment of the present invention.
Fig. 2b is a schematic diagram of a second view structure of an optical fiber vibration device in a first embodiment of the present invention.
Fig. 3a is a schematic view of a first view angle structure of an optical fiber vibration device in a second embodiment of the present invention.
Fig. 3b is a schematic diagram of a second view angle structure of an optical fiber vibration device in a second embodiment of the present invention.
Fig. 4a is a schematic view of a first view angle structure of an optical fiber vibration device in a third embodiment of the present invention.
Fig. 4b is a schematic diagram of a second view angle structure of an optical fiber vibration device in a third embodiment of the present invention.
Fig. 4c is a schematic diagram of a third view angle structure of an optical fiber vibration device in a third embodiment of the present invention.
Fig. 5a is a schematic view of a first view angle structure of an optical fiber vibrating device in a fourth embodiment of the present invention.
Fig. 5b is a schematic diagram of a second view angle structure of an optical fiber vibration device in a fourth embodiment of the present invention.
Fig. 6a is a schematic diagram of a first view angle structure of an optical fiber vibration device in a fifth embodiment of the present invention.
Fig. 6b is a schematic diagram of a second view angle structure of an optical fiber vibration device in a fifth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is described in further detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
As shown in fig. 1, the system includes a pigtail output semiconductor laser 100 for illuminating as a light source, an optical fiber vibration device 200 connected to the pigtail output semiconductor laser 100 for homogenizing the laser spots output by the optical fibers 300, an optical lens group 400 connected to the optical fiber vibration device 200 for collimating or diverging the laser output beams, and a zoom device 500 connected to the optical lens group for driving the optical lens group to move. The optical lens assembly 400 and the zoom apparatus 500 are fixedly connected by a shaft, which is not shown in the figure.
When the laser is implemented specifically, the laser output by the semiconductor laser output by the tail fiber is transmitted through the optical fiber, the optical fiber with the preset length is selected from the optical fiber for outputting the laser, after two ends of the optical fiber with the preset length are fixed, the middle point part of the optical fiber with the preset length is connected with the optical fiber vibration device, the optical fiber vibration device brings the optical fiber to vibrate up and down, the laser output by the vibrated optical fiber is obtained, and the laser is collimated through the zoom device and the optical lens group to be applied in the next step, such as illumination, display and the like.
In a further embodiment, the optical fiber vibration device comprises a base, a vibration mechanism arranged on the base and used for driving the optical fiber to move, and a driving mechanism arranged on the base and contacted with the vibration mechanism and used for driving the vibration mechanism to vibrate.
Specifically, the driving mechanism comprises a sliding guide rod, and the sliding guide rod is used for driving the optical fiber to vibrate up and down under the action of the driving mechanism. Wherein, the sliding guide rod is connected with the base through a sliding bearing. The sliding guide rod is also provided with a compression spring, and the compression spring is elastically connected with the fixed base. Furthermore, the driving mechanism can also adopt a spring piece, and unidirectional elastic resonance is realized by utilizing the characteristics of the spring piece in the driving mechanism.
In a further embodiment, the optical fiber vibration device comprises a base, a vibration mechanism arranged on the base and used for driving the optical fiber to vibrate, and a driving mechanism arranged on the base and in contact with the vibration mechanism and used for driving the vibration mechanism to swing. The specific driving mechanism may be a swing rod and a swing rod shaft, and the swing rod shaft is subjected to radial rigid back-and-forth vibration under the action of the driving mechanism, so that the optical fiber is driven to swing back and forth along a radian direction to achieve the purpose of vibration. The radial rigid vibration is loud in noise, and preferably vibrates back and forth radially elastically through a torsion spring or a tension spring.
In a further embodiment, the driving mechanism comprises a motor arranged on one side of the base, an eccentric component arranged on the other side of the base and fixedly connected with the motor, and used for driving the driving mechanism to vibrate through eccentric rotation under the driving of the motor, and the motor is used for driving the eccentric component.
The eccentric component is a cam or eccentric assembly. When the eccentric part adopts the cam, the driven part can obtain any expected motion by only designing a proper cam profile when the cam is used, and the cam has simple and compact structure and convenient design. Further, the eccentric part is an eccentric wheel, the center of the eccentric wheel is not on the rotating point, the eccentric wheel is generally referred to as a circular wheel, and when the circle does not rotate around the center of the circle, the eccentric wheel is formed. When the eccentric component is an eccentric component, the eccentric component comprises an eccentric shaft and a bearing, one end of the eccentric shaft is fixedly connected with a motor shaft of the motor, and the other end of the eccentric shaft is sleeved with the bearing. The bearing can effectively reduce abrasion and prolong the service life of the equipment.
The rotating speed range of the motor is 3000-5000 r/min, and meanwhile, the torsion value in the selection of the motor needs to be at least 1.5 times of load, and the load is a coupling line of the compression spring and the optical fiber.
The optical fiber adopts an optical fiber coupling line. The amplitude range of the optical fiber is 1 to 3mm. Preferably, the amplitude of the optical fiber is optimally controlled to be about 2 mm.
The optical fiber vibration device further includes a clamping member (not shown) for clamping a predetermined length of the optical fiber, and the optical fiber held by the clamping member has a middle portion fixed in the optical fiber through-hole. The predetermined length is equal to or greater than 40mm, preferably 50mm. The arrangement is such that the fiber has two support points to support the fiber and also to confine the vibration within the fiber in the AB segment without affecting and interfering with other components.
As shown in fig. 2a and 2b, the optical fiber vibration device includes a motor 1, an eccentric component 2, a ball head sliding guide rod 3, a compression spring 4, a base 5, an optical fiber fixing device 6, and a sliding bearing 8; a flange is arranged at the top of the ball head sliding guide rod 3, one end of a compression spring 4 is abutted against the flange, the other end of the compression spring 4 is fixed on a base 5, a motor 1 is fixed on one side of the base 5, a motor shaft through hole is arranged on the base 5, and a motor shaft of the motor 1 penetrates through the motor shaft through hole to be fixedly connected with an eccentric part 2 on the other side of the base 5; the eccentric component 2 drives the compression spring 4 to vibrate through eccentric rotation under the driving of the motor 1. The optical fiber fixing device 6 is connected with the sliding guide rod 3, and the optical fiber fixing device 6 is used for fixing an optical fiber 7. A sliding bearing 8 is provided on the base 5 for connecting the sliding guide 3 and the optical fiber fixing device 6. The top of the ball head sliding guide rod 3 is arranged below the eccentric component 2, a sliding guide rod through hole is formed in the base 5, and the sliding guide rod 3 is connected with the optical fiber fixing device 6 through a sliding bearing 8 arranged in the sliding guide rod through hole. The optical fiber fixing device 6 is an optical fiber wire clamping groove and is matched with the size of the optical fiber 7.
In a further embodiment, when the cam adopts an eccentric wheel, the ball head sliding guide rod correspondingly adopts a sliding guide rod with a plane top end. The adoption of the planar sliding guide rod has less noise.
Preferably, in order to reduce the abrasion of the eccentric wheel, a ball bearing and a guide rod bearing seat can be adopted to replace a ball head sliding guide rod, so that the service life of the device can be prolonged.
Specifically, the motor outputs a certain rotating speed and the eccentric component is connected and combined to realize reciprocating motion in the sliding bearing through the compression spring under certain frequency and amplitude, so that the optical fiber is driven to vibrate at certain amplitude and frequency, and speckle output from the optical fiber is weakened.
As shown in fig. 3a and 3b, a base 5, a swing link 11 hinged to the base 5, an eccentric member 2, and a motor 1 for driving the eccentric member 2; one end of the swing rod 11 is provided with a U-shaped groove, the eccentric component 2 is arranged in the U-shaped groove, and the eccentric component 2 drives the swing rod 11 to swing through eccentric rotation under the driving of the motor 1; the other end of the swing link 11 is provided with a fixing structure for fixing the optical fiber 7. The optical fiber 7 is preferably an optical fiber coupling line, namely, the optical fiber vibration device is matched with the tail fiber output semiconductor laser for use, and speckles of laser output by the optical fiber are weakened by vibrating the optical fiber coupling line.
The swing rod 11 is hinged on the base 5 through a swing rod shaft 13, a first bearing 12 is fixed on the base 5, one end of the swing rod shaft 13 is fixed on the inner ring of the first bearing 12, and the other end of the swing rod shaft 13 is fixed on the swing rod 11. In other words, the swing link 11 is rotated relative to the base 5 by the first bearing 12 fixed to the base 1. The optical fiber needs high-frequency vibration, and the abrasion and noise are greatly reduced and the stability of the device is improved by utilizing the good lubricating and rotating characteristics of the bearing. The first bearing 12 may be a rolling bearing or a sliding bearing.
Because the optical fiber is fixed at the other end of the swing rod, one end of the swing rod is driven to swing in a reciprocating manner through the eccentric rotation of the eccentric component, so that the optical fiber at the other end of the swing rod swings in a reciprocating manner by utilizing a lever principle (a hinge point is a fulcrum), the vibration of the optical fiber is realized, and laser speckles are effectively weakened.
A third embodiment of the application of an optical fiber vibration device of the present invention is shown in fig. 4a, 4b, and 4c, and includes: the device comprises a base 1, a swing rod shaft 13 arranged on the base 5, a torsion spring 14 and an inverted V-shaped swing rod (also called as an inverted U-shaped swing rod) 11 which are sequentially sleeved on the swing rod shaft 13, and a vibration mechanism contacted with a first swing arm of the inverted V-shaped swing rod 11; the swing rod shaft 13 and the vibration mechanism are both fixed on the base 5, and the top of the inverted V-shaped swing rod 11 is sleeved on the swing rod shaft 13, i.e. the torsion spring 14 and the inverted V-shaped swing rod 11 are pivoted on the base 5 through the swing rod shaft 13. A first torsion bar 21 of the torsion spring 14 is fixed on the base 5, and a second torsion bar of the torsion spring 14 is fixed on a first swing arm of the inverted V-shaped swing rod 11; the end part of the second swing arm of the inverted V-shaped swing rod 11 is used for fixing the optical fiber 7, and specifically, the vibration mechanism comprises a motor 1 fixed on the base 5 and an eccentric part 2 fixedly connected with a motor shaft of the motor 1; the eccentric component 2 drives the inverted V-shaped swing rod 11 to swing through eccentric rotation under the driving of the motor 1. The end of the second swing arm of the inverted V-shaped swing rod 11 is provided with a fixing structure for fixing the optical fiber. The optical fiber is preferably an optical fiber coupling line, namely, the optical fiber vibration device is matched with the tail fiber output semiconductor laser for use, and the speckle of the laser output by the optical fiber is weakened by vibrating the optical fiber coupling line.
As shown in fig. 5a and 5b, the device includes a base 5, a swing link 11 having one end hinged to an upper portion of the base 5, a tension spring 15 having one end disposed at a lower portion of the base 5, and a vibration mechanism for reciprocating the swing link 11; the other end of the tension spring 15 is fixedly connected with the swing rod 11, the swing rod 11 is contacted with the vibration mechanism, and the other end of the swing rod 11 is used for fixing the optical fiber 7. The optical fiber is preferably a fiber coupling wire.
Specifically, a swing rod shaft 13 is fixed on the upper portion of the front face of the base 5, and the swing rod shaft 13 is hinged to the swing rod 11. A fixed shaft 16 is fixed to the lower portion of the front surface of the base 5, and one end of a tension spring 15 is fixed to the fixed shaft 16. The vibration mechanism comprises an eccentric part 2 and a motor 1 fixed on the back of a base 5; a motor shaft through hole is formed in the base 5, and a motor shaft of the motor 1 penetrates through the motor shaft through hole to be fixedly connected with the eccentric part 2 on the front side of the base 5; the eccentric part 2 drives the swing rod 11 to swing through eccentric rotation under the driving of the motor 1.
Because the optical fiber is fixed on the other end of the swing rod, the swing rod is vibrated through the vibration mechanism, the swing rod is made to swing in a reciprocating mode by utilizing a lever principle (a swing rod shaft 13 is a pivot), vibration of the optical fiber is achieved (the vibration direction is shown by a solid arrow in fig. 5 a), light spots generated by laser after the optical fiber is output have a homogenization effect, and laser speckles are effectively weakened.
An embodiment of a specific application of an optical fiber vibration device, as shown in fig. 6a and 6b, includes: a base 5, a spring piece 17 with one end fixed on the base 5, an eccentric component 2 contacted with the bottom surface of the spring piece 17 and a motor 1 for driving the eccentric component 2 to rotate; the eccentric component 2 drives the spring plate 17 to vibrate through eccentric rotation under the driving of the motor 1; the other end of the spring piece 17 is used for fixing the optical fiber 7. The optical fiber is preferably a fiber coupling wire.
Because the optical fiber is fixed at the end part of the spring piece, the spring piece is vibrated through the eccentric rotation of the eccentric component, the vibration of the optical fiber is realized (the vibration direction is shown by a solid arrow in figure 6 a), light spots generated by laser output by the optical fiber have the homogenization effect, the light emitted by the laser is clearer and more uniform, and the laser speckle is effectively weakened.
The invention also provides a light uniformizing method of the system for uniformizing laser spots output by the semiconductor laser, which comprises the following steps:
step S100, when the tail fiber is detected to output laser output by the semiconductor laser, an optical fiber vibration device arranged on the optical fiber drives the optical fiber to vibrate at a certain amplitude;
and S200, collimating the output laser obtained after the optical fiber is vibrated through an optical lens group and a zooming device to generate laser after light homogenizing.
When the tail optical fiber output semiconductor laser is started, the section of the obtained optical fiber which is relatively gentle is provided with the optical fiber vibration device, the optical fiber is driven by the optical fiber vibration device to vibrate up and down, and laser output after the optical fiber vibrates is collimated by the optical lens group and the zooming device and used for illumination or display on the next step. In order to prevent the optical fiber from being damaged due to an excessively large vibration amplitude, the amplitude of the optical fiber is generally controlled to be 1 to 3mm.
The driving part of the optical vibration device in the dodging device is hard contact, so the mechanical structure is easy to generate abrasion and noise, the torsion spring/tension spring has certain rebound speed limit, so the generated noise is relatively large, and the structures are hard contact, so in order to avoid the occurrence of excessive noise and abrasion phenomena, different material configurations can be carried out on the contact movable mechanism, wherein one material needs to have self-lubricating property and anti-abrasion property, or other surface treatments can be carried out on the corresponding material, such as oil immersion, lubricating grease coating and the like, and corresponding soft materials such as rubber and damping grease can be added for carrying out noise reduction treatment.
In summary, the present invention provides a system and a method for homogenizing laser spots output by a semiconductor laser, wherein the system comprises a pigtail output semiconductor laser for illuminating as a light source, an optical fiber vibration device connected with the pigtail output semiconductor laser for homogenizing the laser spots output by the optical fiber, an optical lens group connected with the optical fiber vibration device for collimating or diverging laser output beams, and a zoom device connected with the optical lens group for driving the optical lens group to move. The device has the advantages that the light spots generated by the laser output by the optical fiber have the homogenization effect through the optical fiber vibration device, so that the light emitted by the laser is clearer and more uniform, the device has simple structure, reliable performance and long service life, the unidirectional vibration has good protection effect on the optical fiber, and the phenomenon of over-quick fatigue and even breakage of the optical fiber due to multidirectional pulling and twisting can not be generated.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (7)
1. A system for homogenizing laser facula output by a semiconductor laser is characterized by comprising a tail optical fiber output semiconductor laser for supplementing light as a light source, an optical fiber vibration device connected with the tail optical fiber output semiconductor laser and used for homogenizing the facula of laser output by optical fibers, an optical lens group connected with the optical fiber vibration device and used for collimating or dispersing laser output light beams, and a zooming device connected with the optical lens group and used for driving the optical lens group to move, wherein the optical fiber vibration device comprises a base, a vibration mechanism arranged on the base and used for driving the optical fibers to move, and a driving mechanism arranged on the base and contacted with the vibration mechanism and used for driving the vibration mechanism to vibrate in a single direction or swing back and forth along an arc direction; the driving mechanism comprises a motor and an eccentric part, the motor is arranged on one side of the base, the eccentric part is arranged on the other side of the base and fixedly connected with the motor and used for driving the driving mechanism to vibrate through eccentric rotation under the driving of the motor, the motor is used for driving the eccentric part, a first bearing is fixed on the base, one end of a swing rod shaft is fixed on an inner ring of the first bearing, the other end of the swing rod shaft is fixed on a swing rod, a U-shaped groove is formed in one end of the swing rod, the eccentric part is arranged in the U-shaped groove, the eccentric part drives the swing rod to swing through eccentric rotation under the driving of the motor, and a fixing structure used for fixing an optical fiber is arranged at the other end of the swing rod.
2. A system for homogenizing a laser spot output by a semiconductor laser as defined in claim 1 wherein the eccentric member is a cam.
3. The system of claim 1, wherein the eccentric component comprises an eccentric shaft and a bearing, one end of the eccentric shaft is fixedly connected to a motor shaft of a motor, and the other end of the eccentric shaft is sleeved to the bearing.
4. A system for homogenizing laser light output from a laser spot of a semiconductor laser as claimed in claim 1 wherein the motor has a speed in the range of 3000 to 5000r/min.
5. A system for homogenizing a laser spot output by a semiconductor laser according to claim 4 wherein the amplitude of the optical fiber is in the range of 1-3 mm.
6. A method of dodging light based on the system of claim 1 for dodging a laser spot output by a semiconductor laser, the method comprising:
A. when the tail fiber is detected to output laser light from the semiconductor laser, the optical fiber vibration device arranged on the optical fiber drives the optical fiber to vibrate with certain amplitude;
B. the laser output after the optical fiber vibration is obtained is collimated by the optical lens group and the zooming device, and then the laser after the light is homogenized is generated.
7. A method of dodging a system according to claim 6, wherein said optical fiber has an amplitude of 1 to 3mm.
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| CN106950676A (en) * | 2017-03-22 | 2017-07-14 | 河南平原光电有限公司 | Novel high-precision zoom mechanism |
| CN106990539B (en) * | 2017-03-27 | 2023-01-31 | 深圳市三千米光电科技有限公司 | Optical fiber vibration device |
| US20210181518A1 (en) * | 2019-12-13 | 2021-06-17 | Hamamatsu Photonics K.K. | Light source module |
| CN111092359A (en) * | 2019-12-27 | 2020-05-01 | 安图实验仪器(郑州)有限公司 | Laser system for matrix-assisted laser desorption ionization time-of-flight mass spectrometer |
| CN113339391B (en) * | 2021-06-11 | 2022-04-05 | 潍坊歌尔电子有限公司 | Hinge and wearable equipment |
| CN115882329B (en) * | 2023-01-05 | 2024-01-19 | 广东豪德数控装备股份有限公司 | Semiconductor laser using homogenized optical fiber output |
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| JPH0657950B2 (en) * | 1988-08-04 | 1994-08-03 | 株式会社熊谷組 | Long fiber reinforced spraying method for hydraulic materials |
| US5074642A (en) * | 1989-11-14 | 1991-12-24 | Hicks John W | Multifiber endoscope with fibers having different indices of refraction |
| DE102009017940A1 (en) * | 2009-04-17 | 2010-10-21 | Storz Endoskop Produktions Gmbh | Endoscopic system |
| CN102103270B (en) * | 2011-03-27 | 2012-07-04 | 山东大学 | Laser beam light balancing and shaping and speckle eliminating integrated device |
| CN202125890U (en) * | 2011-06-29 | 2012-01-25 | 山东神戎电子股份有限公司 | Remote laser zooming lighting device |
| CN102298215B (en) * | 2011-09-15 | 2013-06-12 | 深圳市佶达德科技有限公司 | Homogenizing method for laser illumination and laser illumination device |
| CN205643891U (en) * | 2016-04-14 | 2016-10-12 | 维林光电(苏州)有限公司 | Low spot multimode fiber coupled laser that looses |
| CN206209204U (en) * | 2016-12-07 | 2017-05-31 | 深圳市佶达德科技有限公司 | The system that a kind of laser facula of noise spectra of semiconductor lasers output carries out even light |
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