Laser optical path regulator and laser using same

Abstract

The utility model discloses a laser light path regulator which comprises a linear polarization regulating device and a circular polarization regulating device, the linear polarization regulating device can be arranged in a laser, one end of the linear polarization regulating device is connected with a reflector, and the other end is connected with a discharge tube; the circular polarization adjusting device is arranged at the output end of the laser; non-polarized light generated in the laser can be converted into linearly polarized light through the linear polarization adjusting device, and circularly polarized light is output after the linearly polarized light is adjusted through the circular polarization adjusting device. The linear polarization adjusting device is internally provided with a first channel for the light path to pass through, and the circular polarization adjusting device is internally provided with a second channel for the light path to pass through; a linear polarization lens is arranged in the first channel, and a quarter-wave plate is arranged in the second channel. Random polarized light is changed into linearly polarized light after being adjusted by the linear polarization adjusting device, the linearly polarized light is changed into circularly polarized light after being adjusted by the circular polarization adjusting device, an end point track contour line of an electric field vector of the circularly polarized light is a circle, and a product processed by the circularly polarized light does not have burrs.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of lasers, in particular to a laser light path adjuster and a laser applying the same. BACKGROUND

[0002] The laser is widely used in the fields of machinery, military, medical treatment, chemical industry and the like, and its structure generally comprises a gas storage tube, a discharge tube coaxial with the gas storage tube, a cooling tube sleeved on the discharge tube, electrodes arranged at both ends of the gas storage tube, an output mirror arranged on one side of the electrodes and a tail mirror arranged on the other side of the electrodes, and a laser power source acting on the electrodes to make the mixed gas in the discharge tube oscillate to form a laser.

[0003] When the laser is not used with any adjusting device, the output laser is non-polarized light, and the vibration direction is random, so that the use of the non-polarized light will form burrs on the edges of the processed products, and the direction of the burrs is inconsistent, which will increase the difficulty of subsequent processing of the products.

[0004] After the linear polarized mirror is used in the laser to adjust the light path of the output laser, the output laser of the laser is linearly polarized light, that is, the electric field vector oscillates in the same plane, so that when the linearly polarized light is used to process the products, the probability of burrs on the edges of the products is reduced, but the direction of the burrs is consistent, and the appearance of the burrs will increase the difficulty of subsequent processing of the products. SUMMARY

[0005] The application aims to provide a laser light path adjuster and a laser applying the same to solve the above technical problems.

[0006] The laser light path adjuster comprises a linear polarization adjusting device and a circular polarization adjusting device, the linear polarization adjusting device is arranged in the laser, one end of the linear polarization adjusting device is connected with a reflecting mirror, and the other end of the linear polarization adjusting device is connected with a discharge tube; the circular polarization adjusting device is arranged at the output end of the laser.

[0007] The non-polarized light generated in the laser can be converted into linearly polarized light through the linear polarization adjusting device, and the linearly polarized light can be converted into circularly polarized light through the circular polarization adjusting device.

[0008] The first channel for the light path is arranged in the linear polarization adjusting device, and the second channel for the light path is arranged in the circular polarization adjusting device; the linear polarization mirror is arranged in the first channel, and the quarter-wave plate is arranged in the second channel.

[0009] The random polarized light generated in the laser is converted into linearly polarized light through the linear polarization adjusting device, and the linearly polarized light is converted into circularly polarized light through the circular polarization adjusting device, so that the end point trajectory profile of the electric field vector of the circularly polarized light is a circle, and therefore the product processed by the circularly polarized light will not have burrs, and the subsequent processing process of the product is facilitated.

[0010] In some embodiments, the linear polarization adjusting device comprises a first connecting end and a second connecting end, one side of the first connecting end is capable of connecting the output mirror, and one side of the second connecting end is capable of connecting the discharge tube; the first connecting end and the second connecting end are respectively provided with a first clamping groove and a second clamping groove, and the first clamping groove and the second clamping groove are respectively provided with a positioning piece for fixing the linear polarization lens; the linear polarization adjusting device is provided with a light transmission hole matched with the linear polarization lens.

[0011] The beneficial effect is that the linear polarization lens can be fixed by the positioning piece to prevent displacement, and natural light can be projected onto the linear polarization lens through the light transmission hole, and whether the installation position of the linear polarization lens is in place can be judged by observing whether the projection and the shape of the light transmission hole match.

[0012] In some embodiments, the first clamping groove is arranged at the lower half of the circumference of the first connecting end and extends in the direction of the second connecting end.

[0013] The second clamping groove is arranged at the upper half of the circumference of the second connecting end and extends in the direction of the first connecting end.

[0014] The beneficial effect is that the positioning piece can fix the linear polarization lens from the upper and lower ends according to the shape characteristics of the linear polarization lens, achieving good fixing effect.

[0015] In some embodiments, the positioning piece comprises a fixed piece and a clamping piece connected to one end of the fixed piece, and the fixed piece is provided with a first through hole.

[0016] The shape of the positioning piece can match the first clamping groove and / or the second clamping groove.

[0017] Corresponding to the first through hole, the first connecting end and the second connecting end are respectively provided with a second through hole.

[0018] The beneficial effect is that the operator can judge whether the installation position of the positioning piece is in place by observing whether the first through hole and the second through hole coincide.

[0019] In some embodiments, the linear polarization lens comprises a main body, a first extension end and a second extension end.

[0020] The main body is a column and is internally through;

[0021] The main body extends in the direction of the first connecting end and converges downward to form the first extension end;

[0022] The main body extends in the direction of the second connecting end and converges upward to form the second extension end.

[0023] In some embodiments, the light transmission hole can pass natural light and project on the first extension end.

[0024] In some embodiments, the circular polarization adjusting device comprises

[0025] a deflection plate;

[0026] a first mirror seat connected to one side of the deflection plate, and a quarter wave plate arranged in the first mirror seat;

[0027] a second mirror seat connected to the other side of the deflection plate, and at least one mirror arranged in the second mirror seat.

[0028] The beneficial effect is that the linearly polarized light reflected by the linear polarization adjusting device can be incident on the quarter wave plate at an incident angle of 45°, the quarter wave plate converts the linearly polarized light into circularly polarized light, and the circularly polarized light is reflected onto the mirror and output by the mirror as the final circularly polarized light.

[0029] In some embodiments, the circular polarization adjusting device further comprises

[0030] a first beam combining baffle connected to the front end of the deflection plate;

[0031] a second beam combining baffle connected to the rear end of the deflection plate.

[0032] The beneficial effect is that the first beam combining baffle and the second beam combining baffle can be fixed to the fixed surface such as a plate or a wall.

[0033] In some embodiments, the circular polarization adjusting device further comprises

[0034] a first cooling device connected to the first mirror seat for cooling the quarter wave plate in the first mirror seat;

[0035] a second cooling device connected to the second mirror seat for cooling the mirror in the second mirror seat.

[0036] The beneficial effect is that the first cooling device and the second cooling device respectively act on the first mirror seat and the second mirror seat to cool and cool them, ensuring stable propagation of the laser.

[0037] A laser device, which applies the laser light path adjusting device. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings without creative labor on the basis of these drawings.

[0039] Figure 1 simplified view of the embodiment;

[0040] Figure 2 schematic view of the structure of the linear polarization adjusting device.

[0041] Figure 3 is a side view of Figure 2

[0042] Figure 4 schematic view of the structure of the positioning sheet.

[0043] Figure 5 schematic view of the structure of the linear polarization lens.

[0044] Figure 6 schematic view of the structure of the circular polarization adjusting device.

[0045] Figure 7 schematic view of the structure of the deflection plate.

[0046] Figure 8 schematic view of the structure of the first or second lens holder.

[0047] Explanation of reference numerals in the drawings,

[0048] 1, linear polarization adjusting device; 2, circular polarization adjusting device; 11, first channel; 12, linear polarization lens; 13, first connecting end; 14, second connecting end; 15, positioning sheet; 16, light transmission hole; 17, second through hole; 21, second channel; 22, deflection plate; 23, first lens holder; 24, second lens holder; 25, first beam combining baffle; 26, second beam combining baffle; 27, first cooling device; 28, second cooling device; 121, main body; 122, first extension end; 123, second extension end; 131, first clamping groove; 141, second clamping groove; 151, fixing sheet; 152, clamping piece; 153, first through hole; 221, incident hole; 222, exit hole; 223, first mounting hole; 224, second mounting hole; 231, seat hole; DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are part of the embodiments of the present application, rather than all the embodiments, and are used to explain the present application, but not to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0050] ​In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", "two ends", "two sides", "bottom", "top" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "superior", "inferior", "primary", "secondary" and the like are only for descriptive purposes and can be simply used to distinguish different components more clearly, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, it can also be detachable connection, it can be integrally connected, it can be mechanical connection, it can also be electrical connection, it can be directly connected, it can also be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] As Figures 1-8 shown,

[0053] A laser light path adjuster comprises linear polarization adjusting device 1 and circular polarization adjusting device 2, linear polarization adjusting device 1 can be arranged in laser, one end is connected with reflecting mirror, one end is connected with discharge tube; Circular polarization adjusting device 2 is arranged at the output end of the laser (in this embodiment, circular polarization adjusting device 2 is arranged outside the laser);

[0054] The non-polarized light generated in the laser can be converted into linearly polarized light by the linear polarization adjusting device 1, and the linearly polarized light is adjusted by the circular polarization adjusting device 2 to output circularly polarized light;

[0055] The first channel 11 for the light path is arranged in the linear polarization adjusting device 1, and the second channel 21 for the light path is arranged in the circular polarization adjusting device 2; Linear polarization lens 12 is arranged in the first channel 11, and quarter-wave plate is arranged in the second channel 21.

[0056] The beneficial effects are: the random polarized light generated in the laser is converted into linearly polarized light by the linear polarization adjusting device 1, and the linearly polarized light is converted into circularly polarized light by the circular polarization adjusting device 2, and the end point trajectory profile of the electric field vector of the circularly polarized light is a circle, so the product processed by the circularly polarized light will not have burrs, and the subsequent processing process of the product is facilitated.

[0057] AsFigures 2-3 As shown,

[0058] Preferably, the linear polarization adjustment device 1 includes a first connecting end 13 and a second connecting end 14. One side of the first connecting end 13 can be connected to an output mirror, and one side of the second connecting end 14 can be connected to a discharge tube. The first connecting end 13 and the second connecting end 14 are respectively provided with a first slot 131 and a second slot 141. The first slot 131 and the second slot 141 are respectively provided with positioning pieces 15 for fixing the linear polarization lens 12. The linear polarization adjustment device 1 is provided with a light-transmitting hole 16 that matches the linear polarization lens 12.

[0059] Its beneficial effects are: the linear polarizing lens 12 can be fixed by the positioning plate 15 to prevent it from shifting, and natural light can be projected onto the linear polarizing lens 12 through the light-transmitting hole 16. By observing whether the shape of the projection matches that of the light-transmitting hole 16, it can be determined whether the installation position of the linear polarizing lens 12 is in place.

[0060] Preferably, the first slot 131 is disposed in the lower half of the circumference of the first connecting end 13 and extends toward the second connecting end 14;

[0061] The second slot 141 is located on the upper half of the circumference of the second connecting end 14 and extends toward the first connecting end 13.

[0062] Its beneficial effect is that the positioning piece 15 can fix the linear polarizing lens 12 from the upper and lower ends respectively according to the shape characteristics of the linear polarizing lens 12, thus achieving a good fixing effect.

[0063] like Figure 4 As shown,

[0064] Preferably, the positioning piece 15 includes a fixing piece 151 and a clip 152 connected to one end of the fixing piece 151. The fixing piece 151 has a first through hole 153. The fixing piece 151 can slide in the first slot 131 and the second slot 141 respectively. The clip 152 is tilted at a certain angle to the fixing piece 151. The clip 152 can contact and fix the linear polarizing lens 12.

[0065] The shape of the positioning piece 15 can match the first slot 131 and / or the second slot 141;

[0066] Corresponding to the first through hole 153, a second through hole 17 is provided on the first connecting end 13 and the second connecting end 14 respectively.

[0067] Its beneficial effect is that operators can determine whether the positioning piece 15 is installed in place by observing whether the positions of the first through hole 153 and the second through hole 17 coincide.

[0068] like Figure 5 As shown,

[0069] Preferably, the linear polarized lens 12 comprises a main body 121, a first extending end 122 and a second extending end 123;

[0070] The main body 121 is a cylinder and is internally through;

[0071] The main body 121 extends to the first connecting end 13 and converges downward to form the first extending end 122;

[0072] The main body 121 extends to the second connecting end 14 and converges upward to form the second extending end 123.

[0073] Preferably, the light passing hole 16 can pass natural light and project on the first extending end 122.

[0074] The fixing sheet 151 in the first clamping groove 131 fixes the first extending end 122 from below, and the fixing sheet 151 in the second clamping groove 141 fixes the first extending end 122 from above.

[0075] As shown in Figure 6 ,

[0076] Preferably, the circular polarization adjusting device 2 comprises

[0077] a deflection plate 22;

[0078] a first mirror seat 23 connected to one side of the deflection plate 22, and a quarter wave plate (not shown in the figure) can be arranged in the first mirror seat 23;

[0079] a second mirror seat 24 connected to the other side of the deflection plate 22, and at least one mirror (not shown in the figure) can be arranged in the second mirror seat 24. The arranged mirror can ensure that the light output direction of the laser is the same as the final light output direction of the mirror.

[0080] The first mirror seat 23 and the second mirror seat 24 are respectively provided with seat holes 231 for fixing the quarter wave plate and the mirror.

[0081] The beneficial effect is that the linearly polarized light reflected by the linear polarization adjusting device 1 can be incident on the quarter wave plate at an incident angle of 45°, the quarter wave plate converts the linearly polarized light into circularly polarized light and reflects it on the mirror, and the mirror outputs the final circularly polarized light.

[0082] As shown in Figure 7 ,

[0083] The deflection plate 22 comprises an incident hole 221, an exit hole 222, a first mounting hole 223 and a second mounting hole 224 which are located in the second channel 21 and are in communication with each other; linearly polarized light passing through the incident hole 221 becomes circularly polarized light after being reflected by the quarter-wave plate on the first mounting hole 223, and the circularly polarized light is reflected by the mirror on the second mounting hole 224 and then exits through the exit hole 222.

[0084] It should be noted that Figure 7 The angle between the two planes a and b is 45 degrees, and the angle between the two planes c and d is 45 degrees.

[0085] Preferably, the circular polarization adjusting device 2 further comprises

[0086] The first beam combining baffle 25 is connected to the front end of the deflection plate 22.

[0087] The second beam combining baffle 26 is connected to the rear end of the deflection plate 22.

[0088] A plurality of fastener holes are provided on the first beam combining baffle 25 and the second beam combining baffle 26, respectively, to facilitate fixing to the fixing surface

[0089] The beneficial effect is that the first beam combining baffle 25 and the second beam combining baffle 26 can be fixed to the fixing surface such as a plate or a wall.

[0090] Preferably, the circular polarization adjusting device 2 further comprises

[0091] The first cooling device 27 is connected to the first mirror seat 23 and is used to cool the quarter-wave plate in the first mirror seat 23.

[0092] The second cooling device 28 is connected to the second mirror seat 24 and is used to cool the mirror in the second mirror seat 24.

[0093] It should be noted that the first cooling device 27 and the second cooling device 28 can be, but are not limited to, a circulating water cooling device, an air cooling device and the like.

[0094] The beneficial effect is that the first cooling device 27 and the second cooling device 28 are respectively arranged to act on the first mirror seat 23 and the second mirror seat 24 to cool and lower the temperature of the two, thereby ensuring stable propagation of the laser.

[0095] A laser device, which applies a laser light path adjusting device.

[0096] The laser light path direction is described below with reference to the accompanying drawings:

[0097] The mixed gas in the laser oscillator generates unpolarized light, which is injected into the linear polarizing lens 12 in the first channel 11. The unpolarized light is adjusted by the linear polarizing lens 12 and becomes linearly polarized light, which is output to the circular polarization adjusting device 22. The linearly polarized light is incident on the quarter-wave plate through the entrance hole 221. The linearly polarized light is adjusted by the quarter-wave plate and becomes circularly polarized light, which is output to the mirror and reflected, and then output through the exit hole 222.

[0098] The above merely describes some embodiments of the present application and is used to illustrate the technical solutions of the present application, rather than limit the same. It should be understood that, for those skilled in the art, without departing from the concept of the present application, the above description can be improved or replaced, and all these improvements and replacements shall fall within the protection scope of the appended claims of the present application. In this case, all the details can be replaced by equivalent elements, and the materials, shapes and sizes can be arbitrary.

Claims

1. A laser optical path adjuster, characterized in that, It includes a linear polarization adjustment device (1) and a circular polarization adjustment device (2). The linear polarization adjustment device (1) can be installed inside the laser, with one end connected to a reflector and the other end connected to a discharge tube. The circular polarization adjustment device (2) is installed at the output end of the laser. The unpolarized light generated in the laser can be converted into linearly polarized light by the linear polarization adjustment device (1), and the linearly polarized light is then adjusted by the circular polarization adjustment device (2) to output circularly polarized light. The linear polarization adjustment device (1) is provided with a first channel (11) through which the light path passes, and the circular polarization adjustment device (2) is provided with a second channel (21) through which the light path passes; a linear polarizing lens (12) is provided in the first channel (11), and a quarter-wave plate is provided in the second channel (21).

2. The laser optical path adjuster according to claim 1, characterized in that, The linear polarization adjustment device (1) includes a first connecting end (13) and a second connecting end (14). One side of the first connecting end (13) can be connected to an output mirror, and one side of the second connecting end (14) can be connected to a discharge tube. The first connecting end (13) and the second connecting end (14) are respectively provided with a first slot (131) and a second slot (141). The first slot (131) and the second slot (141) are respectively provided with positioning pieces (15) for fixing the linear polarization lens (12). The linear polarization adjustment device (1) is provided with a light-transmitting hole (16) that matches the linear polarization lens (12).

3. A laser optical path adjuster according to claim 2, characterized in that, The first slot (131) is located in the lower half of the circumference of the first connecting end (13) and extends toward the second connecting end (14); The second slot (141) is located on the upper half of the circumference of the second connecting end (14) and extends toward the first connecting end (13).

4. A laser optical path adjuster according to claim 2, characterized in that, The positioning piece (15) includes a fixing piece (151) and a clip (152) connected to one end of the fixing piece (151). The fixing piece (151) has a first through hole (153). The shape of the positioning piece (15) can match the first slot (131) and / or the second slot (141); Corresponding to the first through hole (153), a second through hole (17) is provided on the first connecting end (13) and the second connecting end (14).

5. A laser optical path adjuster according to claim 3, characterized in that, The linear polarizing lens (12) includes a main body (121), a first extension end (122) and a second extension end (123); The main body (121) is a column and has a through-hole structure. The main body (121) extends toward the first connecting end (13) and converges downward to form the first extension end (122); The main body (121) extends toward the second connecting end (14) and converges upward to form the second extension end (123).

6. A laser optical path adjuster according to claim 5, characterized in that, Natural light can pass through the light-transmitting hole (16) and be projected onto the first extension end (122).

7. A laser optical path adjuster according to claim 1, characterized in that, The circular polarization adjustment device (2) includes Deflection plate (22); A first mirror mount (23) is connected to one side of a deflection plate (22), and a quarter-wave plate can be provided inside the first mirror mount (23); A second mirror mount (24) is connected to the other side of the deflection plate (22), and at least one reflector can be provided in the second mirror mount (24).

8. A laser optical path adjuster according to claim 7, characterized in that, The circular polarization adjustment device (2) also includes The first beam-combining baffle (25) is connected to the front end of the deflection plate (22); The second beam-combining baffle (26) is connected to the rear end of the deflection plate (22).

9. A laser optical path adjuster according to claim 8, characterized in that, The circular polarization adjustment device (2) also includes The first cooling device (27) is connected to the first mirror mount (23) and is used to cool the quarter-wave plate inside the first mirror mount (23); The second cooling device (28) is connected to the second mirror mount (24) and is used to cool the mirror inside the second mirror mount (24).

10. A laser, characterized in that, The application includes the laser optical path modulator as described in any one of claims 1 to 9.

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