A wet etching processing method of high-precision optical sight reticle

Abstract

The application discloses a high-precision optical sighting device reticle wet etching processing method, which comprises the following steps: etching the reticle in batches by using a reticle batch etching device, filling the reticle scribe line area on the reticle by using a reticle scribe line filling device, and detecting the reticle in multiple directions by using a reticle scribe line illumination brightness detection device. By the method, the reticle can be etched and filled in batches, surface scratches, scratches and broken edges of the reticle glass part are avoided, defective products are reduced, and the processing efficiency of the reticle scribe line is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dividing processing, in particular to a wet etching processing method of high-precision optical sighting device dividing plate. BACKGROUND

[0002] The main function of the dividing plate in the optical sighting device is to position and accurately aim at the observation target or attack target, and it plays an important role in the whole optical system. The ordinary dividing plate can meet the normal use during the day, but under the condition of low light source brightness or weak light source at night, the dividing lines on the ordinary dividing plate will lose the main function, thereby reducing the tracking of the observation target or attack target, and the whole sighting device does not fully reflect the function.

[0003] In order to solve the problem of poor clarity of the dividing plate when used under the condition of low light source brightness or weak light source, the traditional wet etching processing method is generally used to process the dividing line of the dividing plate at present. However, the traditional processing method cannot perform batch etching processing on the dividing plate, so that the batch processing efficiency is low. In addition, the filling mode of the dividing line of the dividing plate during processing is difficult to perform batch operation, thereby affecting the filling efficiency. Moreover, the operation process of processing and detecting simultaneously is not realized, and the processed product of the dividing plate with surface scratch or surface defect cannot be detected in time, which brings inconvenience to the later installation and use of the dividing plate. Therefore, the present application provides a wet etching processing method of high-precision optical sighting device dividing plate. SUMMARY

[0004] In order to solve the above problems, the purpose of the present application is to provide a wet etching processing method of high-precision optical sighting device dividing plate.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: a wet etching processing method of high-precision optical sighting device dividing plate, comprising the following steps:

[0006] S1, using a dividing plate batch etching device to perform batch etching on the dividing plate, that is, immersing the dividing plate after plating and completing exposure and development in a room temperature etching liquid for 20-30 seconds, then immediately rinsing the front and back surfaces of the dividing plate with pure water or deionized water for more than 10 seconds, and then using a degreasing cloth to wipe the dividing plate clean, so that one side of the dividing plate forms a dividing line area;

[0007] S2, using a dividing plate luminescent material filling device to fill water glass and luminescent material in the dividing line area of the dividing plate, cleaning the residual material on the surface of the filled dividing plate, and then placing the cleaned dividing plate in a constant temperature oven, turning off the power immediately when the temperature rises to 120 DEG C, and taking out the dividing plate after the temperature drops to room temperature; the luminescent filling material is zinc oxide or titanium dioxide;

[0008] S3, the scale plate after S2 is detected by the scale plate ruling line illumination brightness detection device, and the scale plate with the required line brightness is the qualified product.

[0009] Further, the scale plate batch etching device comprises a constant temperature water bath box and an etching clamp, the etching clamp is located in the inside of the constant temperature water bath box, the top of the etching clamp is provided with a scale plate placing groove, the inside of the constant temperature water bath box is provided with pure water, the liquid level of the pure water is lower than the top position of the etching clamp, and the inside of the constant temperature water bath box is provided with a temperature control system for keeping the pure water constant temperature.

[0010] Further, the etching liquid in S1 is prepared by mixing pure water and strong etching chemical reagent at a mixing ratio of 0.9:1.5, and the strong etching chemical reagent is one of hydrofluoric acid and sulfuric acid.

[0011] Further, in S1, the scale plate batch etching is to pour the etching liquid into the scale plate placing groove on the top of the etching clamp, and after constant temperature for 0.5-1 h, the plated and developed scale plate is immersed in the etching liquid.

[0012] Further, the scale plate light emitting object filling device comprises a base, a fixed block fixedly connected to the top of the base, a gas cylinder fixedly connected to the top of the fixed block, a connecting rod fixedly connected to the top end of the gas cylinder, a hollow filling plate fixedly connected to the bottom of the end of the connecting rod away from the gas cylinder, a first conveying pipe and a second conveying pipe fixedly connected to the top of the filling plate, two cavities separated by a partition plate in the inside of the filling plate, and the first conveying pipe and the second conveying pipe are in communication with the two cavities in the inside of the filling plate; a water glass conveying frame and a filling object conveying frame fixedly connected to the bottom of the filling plate, a plurality of water glass conveying frames and a plurality of filling object conveying frames symmetrically distributed around the partition plate; an installation groove opened in the top of the base, a connecting column rotatably connected to the inner bottom of the installation groove, a supporting seat fixedly connected to the top of the connecting column for placing a scale plate, a clamping groove opened in the top of the supporting seat, and a plurality of clamping grooves in the inside of the scale plate.

[0013] Further, a motor fixedly connected to the inner bottom of the installation groove, and a rotating column fixedly connected to the output end of the motor; a rotating plate fixedly connected to the top of the rotating column, a limiting column fixedly connected to the top of the rotating plate, two limiting columns annularly distributed on the outer surface of the rotating plate, and the two limiting columns are at right angles.

[0014] Further, the circumferential surface of the connecting column is fixedly connected with a fixing frame, four limiting grooves are arranged on the top of the fixing frame, and the four limiting grooves are distributed in cross shape.

[0015] Further, the top of the rotating plate is provided with a dial with an arc-shaped groove, the outer surface of the fixing frame is provided with arc-shaped grooves, and the two vertices of the arc-shaped groove of the dial can be alternately cut into the adjacent two arc-shaped grooves of the fixing frame.

[0016] Further, the reticle line illumination brightness detection device comprises a shell, a reticle support in the shell, a light-emitting diode A and a light-emitting diode B arranged at two different positions of the reticle support in the shell, an ocular group support fixedly arranged on the top of the shell, an adjustable magnification ocular group arranged on the ocular group support, and the reticle is arranged on the reticle support.

[0017] Further, the reticle line illumination brightness detection device further comprises a light-emitting diode A brightness control system, a light-emitting diode B brightness control system and a detection device switch assembly, the light-emitting diode A brightness control system is used for controlling the brightness of the light-emitting diode A, the light-emitting diode B brightness control system is used for controlling the brightness of the light-emitting diode B, and the detection device switch assembly is used for controlling the power-on and power-off of the light-emitting diode A brightness control system and the light-emitting diode B brightness control system.

[0018] Compared with the prior art, the reticle line processed by the method can still be clear when used under low illumination brightness or weak light source, so that the tracking of the observation target or the attack target can be easily completed, and the method has the following beneficial effects:

[0019] 1. The batch etching device for reticle can complete the batch etching process with high efficiency, and the etching fixture and the reticle placing groove arranged in the etching device can place each reticle separately, so that the surface defect caused by scratches on the surface of the reticle glass during the etching process is avoided, the scratches and broken edges on the surface of the reticle glass are avoided, and the defective products are reduced.

[0020] 2. The reticle plates are filled with luminous objects using a reticle plate filling device, which solves the problem that traditional processing methods cannot fill in batches and improves the filling efficiency of the reticle plates. Specifically, by providing a first conveying tube, a second conveying tube, multiple water glass conveying racks and a filler conveying rack, it is convenient to fill multiple reticle plates at the same time, thereby improving the convenience of filling the device. By providing a rotating plate, a limiting column, a fixed frame and a dial, a motor is used to drive the rotating column, the rotating plate and the dial to rotate. When the dial rotates, the two vertices of its arc-shaped groove respectively cut into the two adjacent arc-shaped grooves of the fixed frame, causing the fixed frame to rotate. The rotation of the fixed frame drives the support seat to rotate through the connecting column, thereby realizing the rotation and displacement of the reticle plates. During the displacement of the reticle plates, the two limiting columns enter the limiting grooves in turn, which is conducive to controlling the support seat to rotate at a fixed point, thereby improving the stability of the reticle plate position adjustment.

[0021] 3. The reticle line illumination brightness detection device can timely detect unqualified products with defects such as scratches, nicks, and broken edges on the reticle glass surface, preventing unqualified reticle finished products from entering the market, providing reliable guarantee for product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the process principle diagram of the present invention;

[0023] Figure 2 This is a schematic structural diagram of a reticle batch etching apparatus according to the present invention;

[0024] Figure 3 This is a schematic structural diagram of a reticle luminous object filling device according to the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the reticle luminous object filling device of the present invention;

[0026] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0027] Figure 6 For the present invention Figure 4 Enlarged view of point B in the middle;

[0028] Figure 7 This is a schematic structural diagram of a reticle line illumination brightness detection device according to the present invention;

[0029] Figure 8 Schematic diagram of the installation of the reticle in a high-precision optical sight.

[0030] Legend:

[0031] 1. Reticle batch etching device;

[0032] 101, constant temperature water bath box; 102, corrosion clamp; 103, scale plate placement groove; 104, temperature control system;

[0033] 2, scale plate light filling device;

[0034] 201, base; 202, fixed block; 203, air cylinder; 204, connecting rod; 205, filling plate; 206, first conveying pipe; 207, second conveying pipe; 208, water glass conveying frame; 209, partition; 210, filling material conveying frame; 211, mounting groove; 212, connecting column; 213, fixed frame; 214, support seat; 215, clamping groove; 216, limiting groove; 217, limiting column; 218, rotating plate; 219, dial; 220, motor; 221, rotating column.

[0035] 3, scale plate line marking illumination brightness detection device;

[0036] 301, shell; 302, scale plate seat; 303, eyepiece group seat; 304, adjustable magnification eyepiece group; 305, light emitting diode A; 306, detection device switch assembly; 307, light emitting diode A brightness control system; 308, light emitting diode B brightness control system; 309, light emitting diode B;

[0037] 4, scale plate; 5, eyepiece group; 6, barrel; 7, objective lens group; 8, image inverter group. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings.

[0039] Reference Figure 1 The wet etching processing method of the high-precision optical sighting device scale plate of the embodiment includes the following steps:

[0040] S1, using the scale plate batch etching device 1 to etch the scale plate in batches; specifically, pour the etching liquid into the scale plate placement groove 103 on the top of the corrosion clamp 102, wait for 0.5h-1h at constant temperature, then immerse the scale plate 4 after coating and completing exposure and development in the etching liquid, etch the scale plate in the room temperature etching liquid for 20-30 seconds, then immediately rinse the front and back of the scale plate with pure water or deionized water for more than 10 seconds, and then use a degreasing cloth to wipe the scale plate clean, so that one side of the scale plate forms a scale line marking area;

[0041] S2, the water glass and luminescent material are filled in the scale line area on the scale plate by using the scale plate luminescent material filling device 2, the surface residues of the filled scale plate are cleaned, then the cleaned scale plate is placed in a constant temperature oven, the power is turned off immediately when the temperature rises to 120 DEG C, the scale plate is taken out after the temperature drops to room temperature, the luminescent filler used is zinc oxide or titanium dioxide;

[0042] S3, the scale plate after S2 step is detected by using the scale plate line illumination brightness detection device 3, the scale plate line light and dark degree meets the requirements, which is the qualified product of the scale plate.

[0043] In the embodiment, the corrosion liquid is prepared by mixing pure water and strong corrosion chemical reagent according to a mixing ratio of 0.9:1.5, the strong corrosion chemical reagent is one of hydrofluoric acid and sulfuric acid, the corrosion time is controlled, and the corrosion liquid can better react with glass, so that the scale plate line groove is micro inverted trapezoidal.

[0044] Referring to Figure 2 The scale plate batch etching device 1 comprises a constant temperature water bath box 101 and an etching clamp 102, the etching clamp 102 is located in the inside of the constant temperature water bath box 101, the constant temperature water bath box 101 adopts a closed structure and has an upper cover which can be opened and closed, the top of the etching clamp 102 is provided with a scale plate placing groove 103, the inside of the constant temperature water bath box 101 is provided with pure water, and the liquid level position of the pure water is lower than the top position of the etching clamp 102, the inside of the constant temperature water bath box 101 is provided with a temperature control system 104 for keeping the pure water constant temperature, the temperature control system 104 has a heating assembly, a controller and a temperature detection sensor, which are used for ensuring that the pure water is in a constant temperature state, and the above-mentioned components in the temperature control system 104 are all existing products and are not the protection range of the present application, so they are not described in detail here.

[0045] Referring to Figures 3-6The scale plate light emitting filling device 2 comprises a base 201, a fixed block 202 fixedly connected to the top of the base 201, a pneumatic cylinder 203 fixedly connected to the top of the fixed block 202, a connecting rod 204 fixedly connected to the top end of the pneumatic cylinder 203, a hollow filling plate 205 fixedly connected to the bottom of the end of the connecting rod 204 away from the pneumatic cylinder 203, a first conveying pipe 206 and a second conveying pipe 207 fixedly connected to the top of the filling plate 205, the inside of the filling plate 205 being divided into two cavities by a partition plate 209, the first conveying pipe 206 and the second conveying pipe 207 being in communication with the two cavities in the inside of the filling plate 205 respectively, a water glass conveying frame 208 and a filling material conveying frame 210 being fixedly connected to the bottom of the filling plate 205, the number of the water glass conveying frame 208 and the filling material conveying frame 210 being multiple, and the water glass conveying frame 208 and the filling material conveying frame 210 being symmetrically distributed with the partition plate 209 as the center, an installation groove 211 being formed in the top of the base 201, a connecting column 212 being rotatably connected to the inner bottom of the installation groove 211, a support seat 214 for placing the scale plate 4 being fixedly connected to the top of the connecting column 212, a clamping groove 215 being formed in the top of the support seat 214, the number of the clamping groove being multiple, and the scale plate being located in the inside of the clamping groove 215.

[0046] In the embodiment, the inner bottom of the installation groove 211 is fixedly connected with a motor 220, and the output end of the motor 220 is fixedly connected with a rotating column 221; the top of the rotating column 221 is fixedly connected with a rotating plate 218, the top of the rotating plate 218 is fixedly connected with a limiting column 217, the number of the limiting column 217 is two, the two limiting columns 217 are annularly distributed on the outer surface of the rotating plate 218, and the two limiting columns 217 are at right angles.

[0047] In the embodiment, the circumferential surface of the connecting column 212 is fixedly connected with a fixed frame 213, four limiting grooves 216 are formed in the top of the fixed frame 213, and the four limiting grooves 216 are cross-shapedly distributed; the top of the rotating plate 218 is provided with a dial 219 with an arc-shaped groove on one side, the outer surface of the fixed frame 13 is provided with an arc-shaped groove, and the two vertices of the arc-shaped groove of the dial 219 can be alternately cut into the adjacent two arc-shaped grooves of the fixed frame 213.

[0048] When the motor 220 drives the rotating column 221, the rotating plate 218 and the dial 219 to rotate, the two vertices of the arc-shaped groove of the dial 219 are respectively cut into the two adjacent arc-shaped grooves of the fixed frame 213, so that the fixed frame 213 is rotated; the fixed frame 213 is rotated to drive the support seat 214 to rotate through the connecting column 212, so as to realize the rotation and transposition of the scale plate 4; during the transposition of the scale plate 4, the two limiting columns 217 rotate into the limiting grooves 216 in turn, which is beneficial to control the fixed-point rotation of the support seat 214, thereby improving the stability of the position adjustment of the scale plate.

[0049] Specifically, when the scale plate luminescent material filling device 2 is used to fill the scale division line area on the scale plate 4 with water glass and luminescent material, first, the second conveying pipe 207 is used to inject water glass into the corresponding cavity of the filling plate 205, and the water glass injected into the cavity is filled into the multiple scale plates 4 placed at the corresponding position through the multiple water glass conveying frames 208 at the bottom, and the multiple scale plates 4 are filled at the same time, which is beneficial to improve the filling efficiency; after the water glass is filled, the support seat 214 is rotated, the scale plate 4 filled with water glass on one side is transferred to the internal cavity of the filling plate 205 corresponding to the first conveying pipe 206, and the scale plate 4 not treated on the other side is transferred to the internal cavity of the filling plate 205 corresponding to the second conveying pipe 207; at this time, the first conveying pipe 206 is used to inject zinc oxide or titanium dioxide filler into the corresponding cavity, and the above-mentioned filler will fall into the filling groove at the top of the multiple scale plates 4 filled with water glass from the bottom of the filler conveying frame 210, thereby completing the secondary mixed filling; at the same time, the second conveying pipe 207 is used to inject water glass into the multiple scale plates 4 not treated under the cavity of the filling plate 205, and the injection path is the second conveying pipe 207, the internal cavity of the filling plate 205 and the water glass conveying frame 208; after the filling is completed, the working condition of the support seat 214 at this time is that a part of the scale plates 4 have completed the secondary mixed filling task, and a new batch of scale plates 4 to be treated can be taken out in batches and replaced, and the other part of the scale plates 4 that have completed the water glass injection can be rotated to the lower part of the cavity of the filling plate 205 corresponding to the first conveying pipe 206 through the support seat 214, and continue to inject zinc oxide or titanium dioxide filler, so as to realize the circulation operation, which is beneficial to improve the convenience of the device, and through batch filling, the filling efficiency is greatly improved.

[0050] The working principle of the reticle light emitting filling device 2 is as follows: first, the second conveying pipe 207 is used to inject water glass into the inside of the filling plate 205, so that the water glass preliminarily fills the top filling groove of the reticle 4, and at this time, the reticle 4 on the other side is in an unfilled state; then the motor 220 drives the rotating column 221, the rotating plate 218 and the dial plate 219 to rotate, the two vertices of the arc-shaped groove of the dial plate 219 are respectively cut into the two adjacent arc-shaped grooves of the fixed frame 213, so that the fixed frame 213 rotates, the fixed frame 213 drives the support seat 214 to rotate through the connecting column 212, so as to drive the reticle 4 to rotate and change position. After the reticle 4 rotates 180 degrees to change position, the reticle 4 on the unfilled side is preliminarily filled, and the first conveying pipe 206 is used to inject the light emitting material into the inside of the filling plate 205, so that the light emitting material is injected from the filling material conveying frame 210 into the reticle 4 and is located above the water glass layer, thereby realizing overall filling; at this time, the overall filled reticle 4 is taken out, a new batch of unfilled reticles 4 is changed in, the unfilled reticle 4 changed in is preliminarily filled, and the reticle 4 preliminarily filled is twice filled with the light emitting material, so as to realize the overall filling operation of the reticle 4 in batches, which is beneficial to improve the convenience of the device filling and improve the filling efficiency.

[0051] The cylinder 203 controls the height between the filling plate 205 and the support seat 214 through the connecting rod 204. Specifically, when the reticle 4 to be processed needs to be placed on the support seat 214 or the reticle 4 filled needs to be taken out from the support seat 214, the connecting rod 204 and the filling plate 205 can be controlled to move upward by the cylinder 203, so that the filling plate 205 moves away from the support seat 214; when the reticle 4 is taken or placed and needs to be filled, the connecting rod 204 and the filling plate 205 can be controlled to move downward by the cylinder 203, so as to facilitate the filling of the reticle 4.

[0052] Referring to Figure 7 The reticle line marking illumination brightness detection device 3 comprises a shell 301, a reticle support seat 302 located in the inside of the shell 301, a light emitting diode A 305 and a light emitting diode B 309 located in the inside of the shell 301 and at two different positions of the reticle support seat 302, a eyepiece group support seat 303 fixedly installed at the top of the shell 301, an adjustable magnification eyepiece group 304 installed on the eyepiece group support seat 303, and the reticle 4 arranged on the reticle support seat 302.

[0053] In this embodiment, the graticule line illumination brightness detection device 3 also includes an LED A brightness control system 307, an LED B brightness control system 308, and a detection device switch component 306. The LED A brightness control system 307 is used to control the brightness of the LED A 305, the LED B brightness control system 308 is used to control the brightness of the LED B 309, and the detection device switch component 306 is used to control the power on and off of the LED A brightness control system 307 and the LED B brightness control system 308.

[0054] During testing, you can choose to activate LED A brightness adjustment system 307 or LED B brightness adjustment system 308 to perform testing separately. In this embodiment, using side illumination as an example, turning on detection device switch assembly 306 and then LED B brightness adjustment system 308 will cause LED B 309 to brighten. By adjusting the button on LED B brightness adjustment system 308, the brightness of LED B 309 can be controlled to detect whether the brightness of the lines on reticle 4 meets the requirements. At the same time, the reticle 4 is observed for defects such as scratches, nicks, and broken edges.

[0055] The qualified reticle detected by the reticle line illumination brightness detection device 3 is installed in the high-precision sight, such as Figure 8 As shown, the high-precision sight includes an eyepiece group 5, a barrel 6, an objective lens group 7, and a rotating mirror group 8, and the reticle 4 is installed between the eyepiece group 5 and the rotating mirror group 8.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wet etching method for high-precision optical sight reticle, characterized in that: The following steps are involved: S1. Carry out batch etching of the graticule using a graticule batch etching device (1), that is, immerse the graticule after coating and exposure and development in a room temperature etching solution for 20 seconds to 30 seconds, then immediately rinse the front and back sides of the graticule with pure water or deionized water for more than 10 seconds, and then wipe the graticule with a degreased cloth to form a graticule line area on one side of the graticule; S2. Filling the reticle line area on the reticle with water glass and luminous material using the reticle plate luminous material filling device (2), cleaning the surface residue of the reticle plate after filling, and then placing the cleaned reticle plate in a constant temperature oven. When the temperature rises to 120° C., immediately turn off the power supply, and take out the reticle plate after the temperature drops to room temperature; the filler used by the reticle plate luminous material filling device (2) to fill the reticle line area on the reticle plate with luminous material is zinc oxide or titanium dioxide; The graticule luminous object filling device (2) comprises a base (201), the top of the base (201) is fixedly connected to a fixed block (202), the top of the fixed block (202) is fixedly connected to a cylinder (203), the top of the cylinder (203) is fixedly connected to a connecting rod (204), the bottom of one end of the connecting rod (204) away from the cylinder (203) is fixedly connected to a filling plate (205) with a hollow structure, the top of the filling plate (205) is fixedly connected to a first delivery pipe (206) and a second delivery pipe (207), the interior of the filling plate (205) is divided into two cavities by a partition (209), and the first delivery pipe (206) and the second delivery pipe (207) are respectively connected to the above-mentioned two cavities inside the filling plate (205); The bottom of the filling plate (205) is fixedly connected to a water glass conveying rack (208) and a filling material conveying rack (210), and the number of the water glass conveying rack (208) and the filling material conveying rack (210) is plural, and the water glass conveying rack (208) and the filling material conveying rack (210) are symmetrically distributed with the partition (209) as the center; the top of the base (201) is provided with a mounting groove (211), the inner bottom of the mounting groove (211) is rotatably connected to a connecting column (212), the top of the connecting column (212) is fixedly connected to a support seat (214) for placing a dividing plate (4), the top of the support seat (214) is provided with a card slot (215), the number of the card slots is plural, and the dividing plate is located inside the card slot (215); S3. Use the reticle line illumination brightness detection device (3) to perform multi-directional light source detection on the reticle after step S2. The reticle whose line brightness meets the requirements is qualified.

2. The wet etching method for a high-precision optical sight reticle according to claim 1, characterized in that: The reticle batch etching device (1) comprises a constant temperature water bath (101) and a etching fixture (102), wherein the etching fixture (102) is located inside the constant temperature water bath (101), and a reticle placement groove (103) is provided on the top of the etching fixture (102), pure water is provided inside the constant temperature water bath (101), and the liquid level of the pure water is lower than the top of the etching fixture (102), and a temperature control system (104) for maintaining a constant temperature of the pure water is provided inside the constant temperature water bath (101).

3. The wet etching method for a high-precision optical sight reticle according to claim 2, characterized in that: The etching solution in step S1 is prepared by mixing pure water and a strong etching chemical agent in a ratio of 0.9:1.

5. The strong etching chemical agent is one of hydrofluoric acid and sulfuric acid.

4. The wet etching method for a high-precision optical sight reticle according to claim 3, characterized in that: The batch etching of the grating plates described in step S1 is to pour the etching liquid into the grating plate placement groove (103) on the top of the etching fixture (102), and after being kept at a constant temperature for 0.5h-1h, immerse the grating plates (4) after coating and exposure and development in the etching liquid.

5. The wet etching method for a high-precision optical sight reticle according to claim 1, characterized in that: The inner bottom of the mounting groove (211) is fixedly connected to a motor (220), and the output end of the motor (220) is fixedly connected to a rotating column (221); the top of the rotating column (221) is fixedly connected to a rotating plate (218), and the top of the rotating plate (218) is fixedly connected to a limiting column (217), and the number of the limiting columns (217) is set to two, and the two limiting columns (217) are distributed in a ring shape on the outer surface of the rotating plate (218), and the two limiting columns (217) are at a right angle.

6. The wet etching method for a high-precision optical sight reticle according to claim 5, characterized in that: The circumferential surface of the connecting column (212) is fixedly connected to a fixing frame (213), and the top of the fixing frame (213) is provided with four limiting grooves (216), and the four limiting grooves (216) are distributed in a cross shape.

7. The wet etching method for a high-precision optical sight reticle according to claim 6, characterized in that: A dial (219) with an arc-shaped groove on one side is provided on the top of the rotating plate (218), and an arc-shaped groove is provided on the outer surface of the fixing frame (213), and two vertices of the arc-shaped groove of the dial (219) can be alternately cut into two adjacent arc-shaped grooves of the fixing frame (213).

8. The wet etching method for a high-precision optical sight reticle according to claim 1, characterized in that: The reticle line illumination brightness detection device (3) comprises a housing (301), a reticle support (302) located inside the housing (301), a light-emitting diode A (305) and a light-emitting diode B (309) are provided inside the housing (301) and at two different positions on the reticle support (302), an eyepiece assembly support (303) is fixedly mounted on the top of the housing (301), an adjustable magnification eyepiece assembly (304) is mounted on the eyepiece assembly support (303), and the reticle (4) is arranged on the reticle support (302).

9. The wet etching method for a high-precision optical sight reticle according to claim 8, characterized in that: The reticle line illumination brightness detection device (3) further comprises a light emitting diode A brightness control system (307), a light emitting diode B brightness control system (308), and a detection device switch component (306), wherein the light emitting diode A brightness control system (307) is used to control the brightness of the light emitting diode A (305), the light emitting diode B brightness control system (308) is used to control the brightness of the light emitting diode B (309), and the detection device switch component (306) is used to control the power on and off of the light emitting diode A brightness control system (307) and the light emitting diode B brightness control system (308).

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