CN216483851U - Device for testing comprehensive performance of fast axis lens - Google Patents
Device for testing comprehensive performance of fast axis lens Download PDFInfo
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- CN216483851U CN216483851U CN202121589057.1U CN202121589057U CN216483851U CN 216483851 U CN216483851 U CN 216483851U CN 202121589057 U CN202121589057 U CN 202121589057U CN 216483851 U CN216483851 U CN 216483851U
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Abstract
The utility model discloses a device for testing the comprehensive performance of a fast axis lens, which comprises a laser, a tested fast axis lens, a slow axis lens, an attenuation beam splitting diaphragm, a light spot testing component, a power testing component and a temperature testing component, wherein the tested fast axis lens, the slow axis lens and the attenuation beam splitting diaphragm are sequentially arranged along the laser beam direction of the laser; after passing through a fast axis lens to be tested, a laser beam of the laser forms a collimated light spot through a slow axis lens, and is divided into a transmission light beam and a reflection light beam through an attenuation beam splitting film, one light beam of the transmission light beam and the reflection light beam enters a light spot testing assembly, and the other light beam enters a power testing assembly; the temperature testing component is arranged on the side of the fast axis lens to be tested. In the utility model, at least one of the output light spot distribution, the output light energy or the working temperature of the fast axis lens to be tested is tested by the light spot testing component, the power testing component or the temperature testing component, so that the comprehensive test can be realized.
Description
Technical Field
The utility model relates to the technical field of semiconductor lasers, in particular to a device for testing the comprehensive performance of a fast axis lens.
Background
The divergence angles of the output light beams of the semiconductor laser in two mutually perpendicular planes are greatly different, and the light spots of the cross sections of the light beams are elliptical spots. The output light beam needs to be shaped in two planes respectively, usually by using two cylindrical lenses in front of each other, a fast axis collimating lens is attached to the laser chip, and a slow axis collimating lens is attached to the laser chip. The convex cylindrical surface of the fast axis collimating lens is aspheric, the processing is difficult and expensive, and the performance directly determines the coupling performance of the output beam of the laser to the optical fiber.
Whether fast axis lens can satisfy the customer and use, there are three important performance index to test usually, and facula detects, power detects and the temperature rise detects promptly, and trade prior art is: the method for judging the collimation effect of the aspheric lens on the divergent laser comprises the steps of detecting the shape of a collimated light spot by a light spot analyzer similar to a CCD camera, and then carrying out qualitative or quantitative judgment; the method for judging the energy coupling effect of the aspheric lens on the laser comprises the steps of detecting the light energy of an output light beam by using power detection equipment similar to a carbon hopper, and then carrying out qualitative or quantitative judgment; when strong current is conducted to output strong light, the temperature rise of the aspheric lens is judged by detecting the temperature of the aspheric lens by equipment similar to a non-contact thermal infrared imager and then performing qualitative or quantitative judgment.
At present, for the detection of the three indexes, the detection and the production are carried out by three stations: firstly, under the condition of small current, namely small output optical power, a CCD is used for monitoring whether the shape of a detected light spot is qualified or not, and if the shape of the detected light spot is qualified, the FAC lens is bonded on a chip. The method of supplying current to the laser chip is usually to use two spring probes, contacting the positive and negative electrodes of the chip, which are suitable because of the small current passing through them. And secondly, electrifying the laser bonded with the FAC lens with medium current, and testing the output light power. And thirdly, placing the laser module on refrigeration heat dissipation equipment, enabling high current to be conducted, namely high output optical power, and then testing the temperature of the FAC lens by using a thermal imager. Obviously, the spring probe electrode is not suitable for the second step and the third step, and a laser is required to bind a gold wire and the electrode, and then a large current is supplied for testing.
The above processes are complicated and uneconomical, and it is not possible to quickly determine whether the fast axis lens is qualified or not, and after the fast axis lens needs to be fixed, destructive disassembly is performed when the performance is found to be poor. For semiconductor fiber laser manufacturers, the comprehensive optical performance of the fast axis lens needs to be checked before the fast axis lens is glued and fixed on a laser and the gold wire and the electrode are bound with the laser.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model can solve the problems that the performance of the existing fast axis lens is inconvenient to detect, a plurality of parameters are difficult to detect, the detection efficiency is influenced, and the fast axis lens is easy to damage.
(II) technical scheme
In order to achieve the above object, in a first aspect, the present invention provides a fast axis lens combination property testing apparatus, including:
a laser for providing a laser beam as a test light source;
the fast axis lens to be measured is arranged at the output end of the laser through the clamping mechanism;
a slow axis lens;
an attenuation spectroscopic membrane;
the light spot testing assembly comprises a light spot analyzer or a photosensitive card and is used for carrying out light spot detection on the fast axis lens to be tested;
the power testing component comprises an optical power meter, a carbon bucket or an integrating sphere and is used for testing the output light energy of the fast axis lens to be tested;
the temperature testing assembly comprises a non-contact temperature detector or contact type thermosensitive detection equipment and is used for testing the working temperature of the fast axis lens to be tested;
the fast axis lens, the slow axis lens and the attenuation beam splitting diaphragm to be measured are sequentially arranged along the laser beam direction of the laser;
after passing through the fast axis lens to be tested, a laser beam of the laser forms a collimated light spot through the slow axis lens, the collimated light spot is divided into a transmission light beam and a reflection light beam through the attenuation beam splitting membrane, one of the transmission light beam and the reflection light beam enters the light spot testing assembly, and the other light beam enters the power testing assembly;
the temperature testing component is arranged on the side of the fast axis lens to be tested.
As a preferred technical solution of the present invention, the laser is a semiconductor laser, and the laser is connected to at least one of the heat sink and the refrigerator, or the laser is sequentially connected to the heat sink and the refrigerator.
As a preferable technical scheme of the utility model, the laser is electrically connected with the adjustable constant current power supply, and the driving power of the laser can be adjusted.
As a preferred technical scheme of the utility model, the laser, the clamping mechanism, the slow-axis lens, the attenuation beam splitting diaphragm, the light spot testing component, the power testing component and the temperature testing component are respectively fixedly or adjustably arranged on the testing platform.
In a second aspect, the utility model provides a use method of a device for testing the comprehensive performance of a fast axis lens, which comprises the following steps:
the clamping mechanism places the fast axis lens to be measured at the output end of the laser;
the laser beam of the laser forms a nearly square light spot after passing through the fast axis lens and the slow axis lens, and is split after passing through the attenuation beam splitting diaphragm;
the driving power of the laser is adjusted through the adjustable constant current power supply, at least one of the output light spot distribution, the output light energy or the working temperature of the fast axis lens to be tested is tested through the light spot testing component, the power testing component or the temperature testing component, and after the testing data is obtained, the clamping mechanism moves and takes out the fast axis lens to be tested.
The adjustable constant current power supply, the light spot testing component, the power testing component and the temperature testing component are respectively connected with the control terminal, the control terminal controls testing operation and data recording, and the control terminal comprises a computer or a tablet computer.
In a third aspect, the utility model further provides a test platform for the device for testing the comprehensive performance of the fast axis lens, and the test platform comprises a supporting seat, a moving part, a first supporting frame, a second supporting frame and a third supporting frame.
The supporting seat is installed on the upper portion of the testing platform, and the laser is installed on the supporting seat.
The movable member is mounted on the upper portion, close to the supporting seat, of the testing platform, and the light spot testing assembly is mounted on the output end of the movable member.
The first support frame is arranged on the upper portion, close to the laser, of the test platform, and the temperature test assembly is arranged on the lower portion of the first support frame.
The second support frame is installed on the upper portion, close to the support seat, of the test platform, and the power detector is installed on the upper portion of the second support frame.
The third support frame is installed on the side portion, close to the laser, of the test platform, two cameras are installed on the side portion of the third support frame, one camera is located on the upper portion of the laser, and the other camera is located on the side portion of the laser.
As a preferred technical scheme of the present invention, the clamping mechanism includes a six-dimensional adjusting frame and a clamping jaw, the six-dimensional adjusting frame is mounted on the upper portion of the test platform, the clamping jaw is mounted on the output end of the six-dimensional adjusting frame, a fast axis lens to be measured is mounted on the inner side of the clamping jaw, and the fast axis lens to be measured is adjusted by the six-dimensional adjusting frame and then is opposite to the output end of the laser.
The six-dimensional adjusting rack is characterized in that the number of the clamping jaws is two, push rods are arranged between the two clamping jaws and the output end of the six-dimensional adjusting rack respectively, the push rods are electric push rods or pneumatic push rods, and the output ends of the push rods are connected with the clamping jaws.
As a preferred technical scheme of the utility model, the loading and unloading of the fast axis lens to be tested can be completed manually or by a mechanical arm.
As a preferred technical scheme of the utility model, the control of the six-dimensional adjusting frame and the clamping jaws is completed through the control terminal.
(III) advantageous effects
1. The device for testing the comprehensive performance of the fast axis lens provided by the utility model tests at least one of the output light spot distribution, the output light energy or the working temperature of the tested fast axis lens through the light spot testing component, the power testing component or the temperature testing component, and the detection of the comprehensive performance is simply and conveniently realized;
2. according to the device for testing the comprehensive performance of the fast axis lens, when comprehensive testing is carried out, the fast axis lens to be tested only needs to be fixed once, the detection of three performances can be completed, the situation that the fast axis lens to be tested needs to be continuously disassembled and assembled in the existing detection is avoided, and the detection efficiency is higher;
3. the device for testing the comprehensive performance of the fast axis lens provided by the utility model can effectively protect the light spot testing component when the laser outputs high power by arranging the attenuation light splitting diaphragm.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a schematic front view of a part of the structure of embodiment 2 of the present invention;
FIG. 3 is a schematic top view of a part of the structure of embodiment 2 of the present invention;
FIG. 4 is a schematic sectional view taken along line A-A in FIG. 3 according to embodiment 2 of the present invention;
FIG. 5 is a schematic sectional view taken along line B-B in FIG. 3 according to embodiment 2 of the present invention;
fig. 6 is a schematic sectional front view of a moving part structure according to embodiment 2 of the present invention.
In the figure: 100. a test platform; 110. a third support frame; 120. a camera; 200. a support assembly; 210. a power source; 220. a supporting seat; 230. a refrigerator; 240. a heat sink; 250. a laser; 300. a clamping mechanism; 310. a six-dimensional adjusting bracket; 320. a clamping jaw; 321. a push rod; 330. a fast axis lens to be measured; 400. a light spot testing component; 410. a slow axis lens; 420. an attenuation spectroscopic membrane; 421. a support plate; 430. a moving member; 431. a slide rail; 432. a motor; 433. a lead screw; 434. a lead screw seat; 440. a light spot analyzer; 500. a temperature testing component; 510. a first support frame; 520. a temperature detector; 600. a power test component; 610. a second support frame; 620. a power detector.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without inventive efforts based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "longitudinal", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example 1
Referring to fig. 1, the apparatus for testing the overall performance of a fast axis lens includes:
a laser 250, the laser 250 being used to provide a laser beam as a test light source;
measured fast axis lens 330;
a slow axis lens 410;
an attenuating spectroscopic film 420;
a light spot testing assembly 400;
a power test assembly 600;
a temperature test assembly 500;
the fast axis lens 330, the slow axis lens 410 and the attenuation beam splitting diaphragm 420 to be measured are arranged in sequence along the laser beam direction of the laser 250;
after passing through the fast axis lens 330 to be tested, the laser beam of the laser 250 forms a collimated light spot through the slow axis lens 410, and is divided into a transmission light and a reflection light through the attenuation beam splitting membrane 420, wherein one of the transmission light and the reflection light enters the light spot testing assembly 400, and the other light enters the power testing assembly 600;
the temperature testing assembly 500 is disposed at the side of the fast axis lens 330 to be tested.
In the present embodiment, the laser 250 is a semiconductor laser, and the laser 250 is connected to at least one of the heat sink 240 and the refrigerator 230, or the laser 250 is connected to the heat sink 240 and the refrigerator 230 in turn.
In this embodiment, the fast axis lens 330 to be measured is disposed at the output end of the laser 250 through the clamping mechanism 300.
In this embodiment, the flare test assembly 400 is configured as a flare analyzer or a light sensing card.
In this embodiment, the power test assembly 600 is provided as an optical power meter, carbon bucket, or integrating sphere.
In the present embodiment, the temperature testing assembly 500 is configured as a non-contact temperature detector or a contact heat-sensitive detection device.
In the present embodiment, the laser 250 is electrically connected to the adjustable constant current power supply 210, and the driving power of the laser 250 is adjustable.
In the present embodiment, the laser 250, the clamping mechanism 300, the slow-axis lens 410, the attenuation and beam-splitting diaphragm 420, the light spot testing assembly 400, the power testing assembly 600, and the temperature testing assembly 500 are respectively fixedly or adjustably disposed on the testing platform 100.
In this embodiment, the adjustable constant current power supply 210, the light spot testing component 400, the power testing component 600, and the temperature testing component 500 are respectively connected to a control terminal, the control terminal controls the testing operation and data recording, and the control terminal is configured as a computer or a tablet computer.
In this embodiment, the method for testing the comprehensive performance of the fast axis lens includes the following steps:
clamping and moving a fast axis lens 330 to be tested by using a clamping mechanism 300, and placing the fast axis lens at a proper position in front of the laser 250 to obtain parallel light beam output;
tests are performed on demand, as required, for example:
when the medium and small power is driven, the light spot testing component 400 is used for detecting the light spots and qualitatively or quantitatively judging whether the fast axis lens 330 to be tested is qualified or not;
when the lens is driven by medium and small power, the power testing component 600 is used for detecting the optical power, and quantitatively judging whether the fast axis lens 330 to be tested is qualified or not;
when the high-power driving is performed, the temperature rise is measured by the temperature test component 500, and whether the fast axis lens 330 to be measured is qualified or not is qualitatively or quantitatively judged;
and reducing the driving power of the laser 250, moving the fast axis lens 330 to be measured out of the light path by using the clamping mechanism 300, taking down the fast axis lens 330 to be measured, and sorting and putting back.
Example 2
Referring to fig. 2-6, the apparatus for testing the overall performance of a fast axis lens includes a testing platform 100, a supporting assembly 200, a clamping mechanism 300, a spot testing assembly 400, a temperature testing assembly 500, and a power testing assembly 600.
The support assembly 200 includes a power source 210, a support base 220, a refrigerator 230 and a heat sink 240, the power source 210 is installed on the upper portion of the test platform 100, the support base 220 is installed on the upper portion of the test platform 100 adjacent to the power source 210, the refrigerator 230 is installed on the upper portion of the support base 220, the power source 210 is electrically connected with the refrigerator 230, the heat sink 240 is installed on the upper portion of the refrigerator 230, the laser 250 is installed on the upper portion of the heat sink 240, when the laser is specifically set, in order to supply power, the power source 210 is electrically connected with a terminal of the laser 250, and in order to adjust power, the power source 210 is set as a power adjustable constant current power source.
The clamping mechanism 300 comprises a six-dimensional adjusting frame 310 and clamping jaws 320, the six-dimensional adjusting frame 310 is installed at the upper part of the test platform 100, the clamping jaws 320 are installed at the output end of the six-dimensional adjusting frame 310, the tested fast axis lens 330 is installed at the inner side of the clamping jaws 320, the tested fast axis lens 330 is adjusted by the six-dimensional adjusting frame 310 and then is opposite to the output end of the laser 250, when the clamping jaws are specifically arranged, two clamping jaws 320 are arranged, push rods 321 are respectively arranged between the two clamping jaws 320 and the output end of the six-dimensional adjusting frame 310, the output end of the push rod 321 is connected with the clamping jaws 320, the push rods 321 are electric push rods, pneumatic push rods or spring clamps, when the clamping jaws 320 are specifically used, the clamping jaws 320 are driven to move through the operation of the push rods 321, and then the tested fast axis lens 330 is fixed at the inner side of the clamping jaws 320.
The facula testing assembly 400 comprises a slow-axis lens 410, an attenuation and dispersion membrane 420, a moving member 430 and a facula analyzer 440, wherein the slow-axis lens 410 is installed on the upper portion of a supporting seat 220, the side portion of the slow-axis lens 410 is opposite to the side portion of a tested fast-axis lens 330, the attenuation and dispersion membrane 420 is installed on the upper portion of the supporting seat 220, the side portion of the attenuation and dispersion membrane 420 is opposite to the side portion of the slow-axis lens 410, the moving member 430 is installed on the upper portion, adjacent to the supporting seat 220, of the testing platform 100, the facula analyzer 440 is installed at the output end of the moving member 430, the input end of the facula analyzer 440 is opposite to the weak light output end of the attenuation and dispersion membrane 420, and during specific setting, a supporting plate 421 is arranged between the slow-axis lens 410, the attenuation and dispersion membrane 420 and the supporting seat 220, and the supporting plate 421 can be slidably installed on the upper portion of the supporting seat 220 in a sliding manner that a sliding block is matched with a sliding groove.
In this embodiment, in order to achieve better detection effect, the center of the output end of the laser 250, the center of the fast axis lens 330 to be detected, the center of the slow axis lens 410, the center of the attenuation splitting diaphragm 420 and the center of the input end of the spot analyzer 440 are coaxially arranged, and the inclination angle of the attenuation splitting diaphragm 420 is 45 °.
In this embodiment, the moving member 430 includes a slide rail 431, a motor 432, a screw 433 and a screw base 434, the slide rail 431 and the motor 432 are respectively installed on the upper portion of the testing platform 100, the screw 433 is installed on the output end of the motor 432, the screw base 434 is installed on the outer side of the screw 433 in a threaded manner, the lower portion of the screw base 434 is connected with the slide rail 431 in a sliding manner, the light spot analyzer 440 is installed on the upper portion of the screw base 434, during specific use, the screw 433 is driven to rotate through the operation of the motor 432, under the cooperation of the slide rail 431, the screw base 434 is moved, and further the position of the light spot analyzer 440 is adjusted.
The temperature testing assembly 500 includes a first supporting frame 510 and a temperature detector 520, the first supporting frame 510 is mounted on the upper portion of the testing platform 100 adjacent to the refrigerator 230, the temperature detector 520 is mounted on the lower portion of the first supporting frame 510, the detecting end of the temperature detector 520 faces the fast axis lens 330 to be tested, and the temperature detector 520 can be configured as a non-contact thermal imager type or a contact type thermistor or thermocouple type temperature detector.
The power testing assembly 600 includes a second supporting frame 610 and a power detector 620, the second supporting frame 610 is mounted on the upper portion of the testing platform 100 adjacent to the supporting base 220, the power detector 620 is mounted on the upper portion of the second supporting frame 610, an input end of the power detector 620 faces a strong light output end of the attenuation beam splitter 420, and the power detector 620 may be a carbon bucket, an integrating sphere or a photosensitive detector type power detector.
In this embodiment, in order to observe the distance between the fast axis lens 330 to be measured and the laser 250 after moving, the testing platform 100 is provided with a third supporting frame 110 adjacent to the side of the laser 250, two cameras 120 are provided on the side of the third supporting frame 110, one camera 120 is located on the upper portion of the laser 250, and the other camera 120 is located on the side of the laser 250.
In conclusion, the detection of the facula, the temperature and the power of the fast axis lens is simply and conveniently realized, so that the comprehensive performance of the fast axis lens is conveniently judged, and the detection efficiency is conveniently improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Fast axle lens comprehensive properties testing arrangement, its characterized in that includes:
a laser (250), the laser (250) for providing a laser beam as a test light source;
a fast axis lens (330) to be measured;
a slow axis lens (410);
an attenuating spectroscopic film (420);
a spot testing assembly (400);
a power test assembly (600);
a temperature testing assembly (500);
the fast axis lens (330), the slow axis lens (410) and the attenuation and light splitting diaphragm (420) to be measured are sequentially arranged along the laser beam direction of the laser (250);
after passing through the fast axis lens (330) to be tested, a laser beam of the laser (250) forms a collimated light spot through the slow axis lens (410), and is divided into transmitted light and reflected light through the attenuation light-splitting membrane (420), one beam of the transmitted light and the reflected light enters the light spot testing assembly (400), and the other beam of the transmitted light and the reflected light enters the power testing assembly (600);
the temperature testing component (500) is arranged on the side of the fast axis lens (330) to be tested.
2. The fast axis lens combination property testing device of claim 1, wherein: the laser (250) is a semiconductor laser, and the laser (250) is connected with at least one of the heat sink (240) and the refrigerator (230), or the laser (250) is sequentially connected with the heat sink (240) and the refrigerator (230).
3. The fast axis lens combination property testing device of claim 1, wherein: the fast axis lens (330) to be measured is arranged at the output end of the laser (250) through a clamping mechanism (300).
4. The fast axis lens combination property testing device of claim 1, wherein: the light spot testing component (400) is arranged as a light spot analyzer or a photosensitive card.
5. The fast axis lens combination property testing device of claim 1, wherein: the power test assembly (600) is configured as an optical power meter, carbon bucket, or integrating sphere.
6. The fast axis lens combination property testing device of claim 1, wherein: the temperature testing assembly (500) is arranged as a non-contact temperature detector or a contact type heat-sensitive detection device.
7. The fast axis lens combination property testing device of claim 1, wherein: the laser (250) is electrically connected with the adjustable constant current power supply (210), and the driving power of the laser (250) can be adjusted.
8. The fast axis lens combination property testing device of claim 3, wherein: the laser (250), the clamping mechanism (300), the slow-axis lens (410), the attenuation light splitting membrane (420), the light spot testing assembly (400), the power testing assembly (600) and the temperature testing assembly (500) are respectively fixedly or adjustably arranged on the testing platform (100).
9. The fast axis lens combination property testing device of claim 7, wherein: the adjustable constant current power supply (210), the light spot testing component (400), the power testing component (600) and the temperature testing component (500) are respectively connected with a control terminal, the control terminal controls testing operation and data recording, and the control terminal is set to be a computer or a tablet computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121589057.1U CN216483851U (en) | 2021-07-13 | 2021-07-13 | Device for testing comprehensive performance of fast axis lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121589057.1U CN216483851U (en) | 2021-07-13 | 2021-07-13 | Device for testing comprehensive performance of fast axis lens |
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Address after: South side of 3rd Floor, Building 5, No. 33, Fuhua Road, Malu Town, Jiading District, Shanghai, 201818 Patentee after: Shanghai Millimeter Star Optical Co.,Ltd. Address before: South side of 3rd Floor, Building 5, No. 33, Fuhua Road, Malu Town, Jiading District, Shanghai, 201818 Patentee before: Shanghai Nextrend Technology Co.,Ltd. |
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Effective date of registration: 20230804 Address after: No. 39, group 4, Duotian, Shiliang village, Shagou Town, Xinghua City, Taizhou City, Jiangsu Province, 225300 Patentee after: Wang Longxiang Address before: South side of 3rd Floor, Building 5, No. 33, Fuhua Road, Malu Town, Jiading District, Shanghai, 201818 Patentee before: Shanghai Millimeter Star Optical Co.,Ltd. |
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Effective date of registration: 20230824 Address after: 201801 Room 201, building 14, 655 Fengzhou Road, Jiading District, Shanghai Patentee after: Shanghai Fast Slow Core Laser Technology Co.,Ltd. Address before: No. 39, group 4, Duotian, Shiliang village, Shagou Town, Xinghua City, Taizhou City, Jiangsu Province, 225300 Patentee before: Wang Longxiang |
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