Lens mounting device

Abstract

The embodiment of the utility model provides a lens mounting device, and relates to the technical field of engineering optics. The lens mounting device comprises a laser, a light intensity detector, a control module and a lens adjusting module. The laser is used for emitting laser beams; the lens is used for reflecting the laser beams to form reflected laser beams; the light intensity detector is located on a propagation path of the reflected laser beam and is used for detecting light intensity information of the reflected laser beam; the control module is used for receiving the light intensity information and outputting an adjustment control signal to the lens adjustment module when the light intensity information is smaller than preset light intensity information. According to the mounting device provided by the embodiment of the utility model, whether the laser beam reflected by the lens can be incident to the light intensity detector in a specific direction is detected, so that the angle precision of the mounted lens is higher, and the error of an optical system is greatly reduced; meanwhile, the mounting device is simple and convenient to operate and can improve the mounting efficiency of the lens.

Description

Technical Field

[0001] The utility model relates to the technical field of optics, in particular to a lens mounting device. Background Art

[0002] Lasers are widely used in our lives and have penetrated almost every aspect of social life.

[0003] Common methods for mounting laser lenses on the market include threaded mounting and welding. However, these methods cannot precisely adjust the angle between the lens and the lens holder before installation. Fixing lenses with inaccurate angles makes adjusting the optical path extremely difficult during laser production. Furthermore, lenses mounted with threaded mounting can become loose due to vibration or temperature fluctuations, while soldering makes angle adjustment difficult and results in poor installation accuracy. Utility Model Content

[0004] The embodiment of the utility model provides a lens mounting device, which can make the mounting accuracy of the lens higher and is easy to operate.

[0005] The embodiment of the utility model provides a lens installation device, comprising a laser, a light intensity detector, a control module and a lens adjustment module;

[0006] The laser is used to emit a laser beam;

[0007] The lens is located on the propagation path of the laser beam and is used to reflect the laser beam to form a reflected laser beam;

[0008] The light intensity detector is located on the propagation path of the reflected laser beam and is used to detect the light intensity information of the reflected laser beam;

[0009] The control module is electrically connected to the light intensity detector and the lens adjustment module respectively, and is used to receive light intensity information and output an adjustment control signal to the lens adjustment module when the light intensity information is less than the preset light intensity information, so that the lens adjustment module adjusts the installation angle of the lens according to the adjustment control signal until the light intensity information is greater than or equal to the preset light intensity information.

[0010] Optionally, the mounting device further comprises a moving platform, the moving platform being used to carry a lens frame of the lens;

[0011] The control module is electrically connected to the mobile platform, and the control module is further configured to output a movement control signal to the mobile platform after the light intensity information is greater than or equal to the preset light intensity information;

[0012] The moving platform is used to drive the lens frame to move a preset distance after receiving a moving control signal, so that the lens frame abuts against the lens.

[0013] Optionally, the surface where the lens frame contacts the lens is provided with a light-sensitive adhesive;

[0014] The installation also includes a curing light;

[0015] The control module is electrically connected to the curing light, and the control module is further configured to output a start control signal to the curing light after the lens holder abuts against the lens;

[0016] The curing lamp is used to emit a curing light beam after receiving an on control signal to cure the light-sensitive adhesive.

[0017] Optionally, the lens adjustment module includes a lens adsorption unit and a lens angle adjustment unit;

[0018] The lens adsorption unit is used to adsorb the lens;

[0019] The lens angle adjustment unit includes a screw rod and is connected to the lens adsorption unit. It is used to adjust the degree of screwing of the lens adsorption unit through the screw rod, thereby adjusting the pitch angle of the lens.

[0020] Optionally, the adsorption unit includes a vacuum adsorption tube.

[0021] Optionally, the mounting device further comprises a beam splitter;

[0022] The beam splitter is placed in the optical path between the laser and the lens to transmit part of the laser beam to the lens;

[0023] The beam splitter is also arranged in the light path between the lens and the light intensity detector, and is used to reflect part of the reflected laser beam to the light intensity detector.

[0024] Optionally, the beam splitter has a transmission-reflection ratio of 1:1.

[0025] Optionally, the mounting device further comprises a housing having a cavity for accommodating the laser, the light intensity detector, the control module and the lens adjustment module;

[0026] The housing is used to shield stray light.

[0027] Optionally, the power P of the laser satisfies 0.5 mW≤P≤25 mW.

[0028] Optionally, the laser comprises a helium-neon laser.

[0029] The installation device provided in the embodiment of the present invention indirectly checks whether the installation angle of the lens is qualified by checking whether the laser beam reflected by the lens can be incident on the light intensity detector in a specific direction, thereby making the angle accuracy of the lens after installation higher and greatly reducing the error of the optical system; at the same time, the installation device is easy to operate and can improve the installation efficiency of the lens.

[0030] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a schematic diagram of a mounting device provided by an embodiment of the present utility model;

[0033] Figure 2 This is a schematic diagram of another installation device provided by an embodiment of the present utility model;

[0034] Figure 3 This is a schematic diagram of another installation device provided by an embodiment of the present utility model;

[0035] Figure 4 This is a schematic diagram of another installation device provided by an embodiment of the present utility model. DETAILED DESCRIPTION

[0036] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] Figure 1 This is a schematic diagram of an installation device provided by an embodiment of the present utility model. Figure 1 As shown, an embodiment of the present invention provides a lens installation device, which includes a laser 2, a light intensity detector 3, a control module (not shown in the figure) and a lens adjustment module 4; the laser 2 is used to emit a laser beam S1; the lens 1 is located on the propagation path of the laser beam, and is used to reflect the laser beam S1 to form a reflected laser beam S2; the light intensity detector 3 is located on the propagation path of the reflected laser beam S2, and is used to detect the light intensity information of the reflected laser beam S2; the control module is electrically connected to the light intensity detector 3 and the lens adjustment module 4, respectively, for receiving light intensity information and outputting an adjustment control signal to the lens adjustment module 4 when the light intensity information is less than the preset light intensity information, so that the lens adjustment module 4 adjusts the installation angle of the lens 1 according to the adjustment control signal until the light intensity information is greater than or equal to the preset light intensity information.

[0039] Specifically, in the optical system, the lens 1 needs to be installed in the optical system at a specific angle, which is the preset installation angle. If the installation angle of the lens 1 is equal to the preset installation angle, or the difference between the installation angle and the preset installation angle is less than the acceptable error value, the installation angle of the lens 1 is qualified. Figure 1 , the laser beam S1 emitted by the laser 2 is incident on the lens 1, and the laser beam S1 is reflected by the lens 1 to form a reflected laser beam S2, and then the reflected laser beam S2 is incident on the light intensity detector 3. Based on the installation requirements of the lens 1, the propagation direction of the laser beam S1 emitted by the laser 2 and the direction of the received light of the light intensity detector 3 are configured as follows: when the angle of the lens 1 is the preset installation angle or the difference between the angle and the preset installation angle is less than the acceptable error value, after the laser beam S1 emitted by the laser 2 is reflected by the lens 1, the reflected laser beam S2 can be fully or mostly received by the light intensity detector 3. The preset light intensity information is a pre-set light intensity information used to determine whether the installation angle of the lens 1 is qualified. The preset light intensity information is less than the light intensity of the laser beam S1 emitted by the laser 2. For example, the preset light intensity information can be set to 90% of the light intensity of the laser beam S1 emitted by the laser 2. If the light intensity information is greater than or equal to the preset light intensity information, it proves that the reflected laser beam S2 with sufficient energy is incident on the light intensity detector 3, and it can be considered that the installation angle of the lens 1 is qualified. If the light intensity information is less than the preset light intensity information, it proves that the reflected laser beam S2 with sufficient energy is not incident on the light intensity detector 3, and the installation angle of the lens 1 is unqualified. The lens adjustment module 4 continuously adjusts the installation angle of the lens 1 until the light intensity information is greater than or equal to the preset light intensity information. The lens adjustment module 4 can then place the lens 1 with the qualified installation angle into the installation position without changing the angle of the lens 1.

[0040] It should be noted that the acceptable error value mentioned above can be set according to the installation accuracy requirements. When the installation accuracy requirements are high, the acceptable error value can be set to less than 1%; when the installation accuracy requirements are relatively loose, the acceptable error value can be set to less than 5%. The present embodiment of the utility model does not specifically limit the acceptable error value, and it can be determined according to the installation accuracy in the actual installation process.

[0041] The installation device provided in the embodiment of the present invention indirectly checks whether the installation angle of the lens is qualified by checking whether the laser beam reflected by the lens can be incident on the light intensity detector in a specific direction, thereby making the installation angle of the installed lens more accurate and greatly reducing the error of the optical system; at the same time, the installation device is easy to operate and can improve the installation efficiency of the lens.

[0042] Based on the above embodiments, Figure 2 This is a schematic diagram of another installation device provided by an embodiment of the present invention, referring to Figure 2 As shown, the mounting device may further include a mobile platform 5, which is used to support a lens frame 6 for the lens 1; the control module is electrically connected to the mobile platform 5, and the control module is further used to output a movement control signal to the mobile platform 5 after the light intensity information is greater than or equal to the preset light intensity information; the mobile platform 5 is used to drive the lens frame 6 to move a preset distance after receiving the movement control signal, so that the lens frame 6 is in contact with the lens 1.

[0043] Specifically, when the light intensity information received by the light intensity detector 3 is greater than or equal to the preset light intensity information, it indicates that the installation angle of the lens 1 meets the preset installation angle requirement. At this time, the control module can output a movement control signal to the mobile platform 5 to control the mobile platform 5 to drive the lens frame 6 to move after receiving the movement control signal. Specifically, the path along which the mobile platform 5 drives the lens frame 6 to move is not limited. For example, the mobile platform 5 can be controlled to drive the lens frame 6 to move a first preset distance in a first direction and a second preset distance in a second direction, where the first direction and the second direction are the same; for example, the first direction can be horizontal, and the second direction can be vertical. For another example, to reduce drive power consumption, the mobile platform can be controlled to move in the direction of the line connecting the lens 1 and the lens frame 6 to ensure high drive efficiency. The present invention does not limit the specific movement method, and different movement methods can be selected in different application scenarios. It only needs to ensure that the moving platform 5 can drive the lens frame 6 to move after receiving the movement control signal to ensure that the lens frame can abut against the lens 1, so that the lens 1 can be installed in the lens frame 6 without moving the lens 1, avoiding the change of the installation angle of the lens 1 during the process of moving the lens 1 into the lens frame 6, thereby causing angle error, and improving the installation accuracy of the lens 1.

[0044] refer to Figure 2 On the basis of the above embodiment, a photosensitive adhesive is provided on the surface where the lens frame 6 contacts the lens 1; the mounting device further includes a curing lamp 7; the control module is electrically connected to the curing lamp 7, and the control module is further configured to output an on control signal to the curing lamp 7 after the lens frame 6 contacts the lens 1; the curing lamp 7 is configured to emit a curing light beam upon receiving the on control signal to cure the photosensitive adhesive.

[0045] Specifically, light-sensitive adhesive is an adhesive that cures rapidly upon exposure to light of a specific frequency band. Applying light-sensitive adhesive, such as UV-curable adhesive, to the surface where the lens frame 6 abuts the lens 1 prevents the adhesive from curing before the lens 1 abuts the lens frame 6, potentially preventing adhesion between the lens 1 and the lens frame 6. Furthermore, after the lens 1 abuts the lens frame 6, a curing light 7 can be used to emit a curing beam, securing the lens 1 to the lens frame 6 via the light-sensitive adhesive, achieving good adhesion between the lens 1 and the lens frame 6 and ensuring stable installation of the lens 1.

[0046] Figure 3 This is a schematic diagram of another installation device provided by the embodiment of the utility model, referring to Figure 3 On the basis of the above embodiment, the lens adjustment module 4 includes a lens adsorption unit 41 and a lens angle adjustment unit 42; the lens adsorption unit 41 is used to adsorb the lens 1; the lens angle adjustment unit 42 includes a screw rod and is connected to the lens adsorption unit 41, and is used to adjust the degree of screwing of the lens adsorption unit 41 through the screw rod, thereby adjusting the pitch angle of the lens 1.

[0047] Based on the above embodiment, the adsorption unit 41 includes a vacuum adsorption tube.

[0048] Compared to traditional clamps, the lens adsorption unit 41 utilizes air pressure differential to adsorb the lens 1, effectively preventing damage to the lens due to over-tightening of the clamp. The lens angle adjustment unit 42 achieves high-precision pitch angle adjustment through adjustment screws, increasing the angle adjustment accuracy of the lens adjustment module 4.

[0049] Figure 4 This is a schematic diagram of another installation device provided by the embodiment of the utility model, referring to Figure 4 On the basis of the above embodiment, the mounting device further includes a beam splitter 8; the beam splitter 8 is arranged in the optical path between the laser 2 and the lens 1, and is used to transmit part of the laser beam S1 to the lens 1; the beam splitter 8 is also arranged in the optical path between the lens 1 and the light intensity detector 3, and is used to reflect part of the reflected laser beam S2 to the light intensity detector 3.

[0050] refer to Figure 4A portion of the laser beam S1 emitted from the laser 2 is reflected by the beam splitter 8, while another portion is transmitted through the beam splitter 8 to become a transmitted laser beam S3. The transmitted laser beam S3 is incident on the lens 1 and reflected by the lens 1 to become a reflected laser beam S2. The reflected laser beam S2 reflected by the lens 1 propagates in the opposite direction along the original incident light path and is incident on the beam splitter 8 again. A portion of the reflected laser beam S2 is transmitted through the beam splitter 8, while another portion of the reflected laser beam S2 is reflected by the beam splitter 8 to become a first reflected laser beam S4, which is incident on the light intensity detector 3. By adjusting the angle of the beam splitter 8, the propagation direction of the light beam reflected by the beam splitter 8 can be adjusted, making the placement of the light intensity detector 3 more flexible. At the same time, the intensity of the first reflected laser beam S4 incident on the laser detector 3 can be adjusted by adjusting the angle of the spectrometer 8. For example, during the use of the lens mounting device, if the position of the light intensity detector 3 is offset and the installation angle of the lens 1 is qualified, the light intensity detector 3 cannot receive the first reflected laser beam S4, then by adjusting the position and angle of the spectrometer 8, the light intensity detector 3 can receive the first reflected laser beam S4 again when the installation angle of the lens 1 is qualified, making it more convenient to debug the lens mounting device.

[0051] Based on the above embodiment, the transmission-reflection ratio of the beam splitter is 1:1.

[0052] Assuming that the transmittance of the beam splitter 8 is p, the reflectance of the beam splitter 8 is (1-p). Under the premise that the installation angle of the lens 1 is the preset installation angle, the ratio of the light intensity incident on the light intensity detector 3 to the laser intensity emitted by the laser 2 is p*(1-p). It is easy to see that when the transmittance of the beam splitter 8 is 50%, that is, when the transmittance-reflection ratio of the beam splitter 8 is 1:1, the light intensity incident on the light intensity detector 3 is the highest. A high-intensity light beam facilitates detection by the light intensity detector 3 and makes the light intensity detector 3 less affected by stray light. Therefore, setting the transmittance-reflection ratio of the beam splitter to 1:1 can improve the detection accuracy of the light intensity detector 3 and further improve the installation accuracy of the lens 1.

[0053] Based on the above embodiment, the mounting device further includes a housing having a cavity for accommodating the laser 2, the light intensity detector 3, the control module and the lens adjustment module 4; the housing is used to shield stray light.

[0054] The housing encloses the laser 2, light intensity detector 3, control module, and lens adjustment module 4 within the cavity, while also leaving a window in the housing for accessing and placing the lens 1 and lens holder 6. By enclosing the laser 2, light intensity detector 3, control module, and lens adjustment module 4 within the cavity, the system shields itself from the effects of stray light from the surrounding environment, preventing it from irradiating the light intensity detector 3 and potentially causing excessive light intensity readings and misjudgments by the control module. Furthermore, encapsulating the laser 2, light intensity detector 3, control module, and lens adjustment module 4 facilitates portability and mobility.

[0055] Based on the above embodiment, the power P of the laser satisfies 0.5 mW≤P≤25 mW.

[0056] Too little optical power will make it difficult for the light intensity detector 3 to detect the light intensity signal and will result in an excessively low signal-to-noise ratio. Excessive optical power can damage the lens 1 and various components, so the laser power needs to be within an appropriate range. In the embodiment of the present invention, the laser power P is set to satisfy 0.5mW≤P≤25mW. This ensures that the light intensity detected by the light intensity detector 3 is high without damaging the components in the installation device, thereby increasing the signal-to-noise ratio, reducing the impact of environmental noise on the light intensity signal, and increasing the accuracy of the light intensity detected by the light intensity detector 3.

[0057] Based on the above embodiment, the laser includes a helium-neon laser.

[0058] Helium-neon lasers have good monochromaticity and high stability, making them suitable for precision measurement. At the same time, helium-neon lasers have a long life and low price, which can reduce the cost of installation devices and increase the life of installation devices.

[0059] The above specific embodiments do not limit the scope of protection of this utility model. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model shall be included within the scope of protection of this utility model.

Claims

1. A lens mounting device, characterized in that: It includes a laser, a light intensity detector, a control module and a lens adjustment module; The laser is used to emit a laser beam; The lens is located on the propagation path of the laser beam and is used to reflect the laser beam to form a reflected laser beam; The light intensity detector is located on the propagation path of the reflected laser beam and is used to detect the light intensity information of the reflected laser beam; The control module is electrically connected to the light intensity detector and the lens adjustment module respectively, and is used to receive the light intensity information and output an adjustment control signal to the lens adjustment module when the light intensity information is less than the preset light intensity information, so that the lens adjustment module adjusts the installation angle of the lens according to the adjustment control signal until the light intensity information is greater than or equal to the preset light intensity information.

2. The mounting device according to claim 1, wherein: The mounting device further comprises a moving platform, and the moving platform is used to carry the lens frame of the lens; The control module is electrically connected to the mobile platform, and the control module is further configured to output a movement control signal to the mobile platform after the light intensity information is greater than or equal to the preset light intensity information; The moving platform is used to drive the lens frame to move a preset distance after receiving the movement control signal, so that the lens frame abuts against the lens.

3. The mounting device according to claim 2, wherein: The surface where the lens frame contacts the lens is provided with a light-sensitive adhesive; The mounting device further includes a curing light; The control module is electrically connected to the curing light, and the control module is further configured to output a start control signal to the curing light after the lens holder abuts against the lens; The curing lamp is used to emit a curing light beam after receiving the start control signal to cure the light-sensitive adhesive.

4. The mounting device according to claim 1, wherein: The lens adjustment module includes a lens adsorption unit and a lens angle adjustment unit; The lens adsorption unit is used to adsorb the lens; The lens angle adjustment unit includes a screw rod and is connected to the lens adsorption unit, and is used to adjust the degree of screwing of the lens adsorption unit through the screw rod, thereby adjusting the pitch angle of the lens.

5. The mounting device according to claim 4, characterized in that The adsorption unit includes a vacuum adsorption tube.

6. The mounting device according to claim 1, wherein: The mounting device further includes a spectroscope; The beam splitter is arranged in the optical path between the laser and the lens, and is used to transmit part of the laser beam to the lens; The beam splitter is also arranged in the optical path between the lens and the light intensity detector, and is used to reflect part of the reflected laser beam to the light intensity detector.

7. The mounting device according to claim 6, characterized in that The transmittance-reflection ratio of the beam splitter is 1:

1.

8. The mounting device according to claim 1, wherein: The mounting device further comprises a housing having a cavity for accommodating the laser, the light intensity detector, the control module and the lens adjustment module; The housing is used to shield stray light.

9. The mounting device according to claim 1, wherein: The power P of the laser satisfies 0.5 mW≤P≤25 mW.

10. The mounting device according to claim 1, wherein: The laser comprises a helium-neon laser.

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