CN110926264B - Combined objective system integrating aiming and guiding and adjusting method - Google Patents
Combined objective system integrating aiming and guiding and adjusting method Download PDFInfo
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- CN110926264B CN110926264B CN201911275958.0A CN201911275958A CN110926264B CN 110926264 B CN110926264 B CN 110926264B CN 201911275958 A CN201911275958 A CN 201911275958A CN 110926264 B CN110926264 B CN 110926264B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G1/00—Sighting devices
- F41G1/06—Rearsights
- F41G1/14—Rearsights with lens
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G1/00—Sighting devices
- F41G1/06—Rearsights
- F41G1/16—Adjusting mechanisms therefor; Mountings therefor
- F41G1/26—Adjusting mechanisms therefor; Mountings therefor screw
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G1/00—Sighting devices
- F41G1/46—Sighting devices for particular applications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G3/00—Aiming or laying means
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Abstract
The invention discloses an aiming-guiding integrated combined objective lens system and an adjusting method, belongs to the technical field of photoelectric comprehensive observing and aiming, and solves the problems that an observing and aiming guiding product in the prior art is large in size, large in mass, low in integration level, low in modularization degree, complex in adjusting and the like. The combined objective system comprises a laser guidance objective and a daytime observation objective; the laser guidance objective comprises a first straight cylinder section, the daytime observation objective comprises a second straight cylinder section, and the laser guidance objective and the daytime observation objective adopt the same shared objective part and a beam splitter prism; the first straight cylinder section is coaxially arranged with the shared objective lens part, and the second straight cylinder section is parallel to the first straight cylinder section; the beam splitter prism is arranged at the connecting part of the shared objective part and the first straight cylinder section, transmits the laser guide optical path, reflects the daytime observation and aiming optical path and is used for realizing the fusion of the laser guide objective and the daytime observation and aiming objective. The invention meets the common light path emission of the laser guidance light path and the observing and aiming light path.
Description
Technical Field
The invention belongs to the technical field of photoelectric comprehensive sighting, and particularly relates to a sighting and guiding combined objective lens system and an adjusting method.
Background
In the observing and aiming guide product, a laser guide light path and a daytime observing and aiming light path are arranged in parallel and are emitted through respective independent objective lenses, and in the adjusting and calibrating process, the mutual relation between the laser guide light path and the daytime aiming light path is adjusted on the basis of a daytime aiming system, so that the overall demand of the product is met. Along with the product integration, lightweight, miniaturization, modularization degree of requiring more and more, this mode has following shortcoming:
1) large volume, heavy weight and low integration level;
2) the emission apertures of the two independent objective lenses are larger than the area of the upper reflecting mirror occupied by the emission window;
3) the modularization degree is low, and the timing is complicated, is unfavorable for batch production and later stage maintenance.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide a combined objective system with aiming and guiding functions and an adjustment method thereof, which organically integrate a guided objective with a day observing and aiming objective system, so as to realize common-path emission of the system, reduce the area of an upper reflector occupied by an emission objective, improve the manufacturability and the adjustment difficulty of the whole adjustment of the system, and meet the design requirements of integration, light weight, miniaturization and modularization of the whole system.
The purpose of the invention is mainly realized by the following technical scheme:
a combined objective system integrating aiming and guiding comprises a laser guidance objective and a daytime observation objective;
the laser guidance objective lens comprises a first straight cylinder section, the daytime observation objective lens comprises a second straight cylinder section, and the same shared objective lens part and the same beam splitter prism are adopted by the laser guidance objective lens and the daytime observation objective lens;
the first straight cylinder section is coaxially arranged with the shared objective lens part, and the second straight cylinder section is parallel to the first straight cylinder section;
the beam splitter prism is arranged at the connecting part of the shared objective part and the first straight cylinder section, transmits the laser guide optical path, reflects the daytime observation and aiming optical path and is used for realizing the fusion of the laser guide objective and the daytime observation and aiming objective.
The daytime observation objective also comprises a field lens and a reflector;
the field lens is arranged on one side of the diurnal viewing optical path reflected by the beam splitter prism, and the reflecting lens is used for reflecting the diurnal viewing optical path reflected by the beam splitter prism into the second straight cylinder section.
The shared objective part is sequentially provided with a first positive lens, a second positive lens and a negative lens from top to bottom.
And a cemented lens is arranged in the first straight cylinder section, a third space ring is arranged above the cemented lens and used for adjusting the distance between the cemented lens and the common objective lens part.
The second straight cylinder section is internally provided with a frame reticle which comprises an outer frame and a reticle, the reticle is fixed on the outer frame through a fifth pressing ring, and the outer frame is fixed in the second straight cylinder section through threaded connection.
And a second space ring is arranged between the outer frame and the second straight cylinder section and is used for enabling the reticle to be positioned on the focal plane of the day observation and aiming objective lens.
A lamp with a seat is arranged on the side wall of the second straight cylinder section and used for illuminating the reticle; frosted glass is arranged between the lamp with the base and the reticle plate, and the frosted glass enables light rays of the lamp with the base to uniformly irradiate the reticle plate.
The lower end of the first straight cylinder section is provided with a first sealing ring, the lower end of the second straight cylinder section is provided with a second sealing ring, and the first sealing ring and the second sealing ring are used for sealing the objective system and an external shell.
A method for adjusting a combined objective system for aiming and guiding comprises the following steps:
mounting a common objective lens part, and determining the interval between the first positive lens and the second positive lens;
installing a beam splitter prism, a field lens and a reflector;
screwing in the reticle with the frame, adjusting the position of the reticle, and ensuring the parallax error and the arrow inclination of the reticle;
after the daytime observation objective is assembled and adjusted, the laser guidance objective is adjusted based on the daytime observation objective, and the focal length of the laser guidance objective and the parallelism of a laser guidance light path and the daytime observation light path are ensured by adjusting the position of the beam splitter prism.
Fixing the beam splitter prism by a first process screw and a second process screw, adjusting the first process screw and the second process screw, and micro-adjusting the beam splitter prism to ensure that the parallelism of optical axes between the day observation objective lens and the laser guidance objective lens is not more than 10'.
Compared with the prior art, the invention can at least realize one of the following technical effects:
1) the daytime viewing objective provides the daytime viewing system with an aiming objective and an aiming mark (reticle). The laser guidance objective lens provides a transmitting objective lens for the laser information field. The functions of the two parts are independent from each other, and the common shared objective lens part and the beam splitter prism are organically fused, so that the aims of imaging and emitting of the common shared objective lens part for aiming and laser guidance are fulfilled.
In the prior art, the calibers of two independent objective lenses for guidance and observation in a parallel light path are
After being fused, the light path is shared for emission, and the caliber of the objective lens part is shared
Can meet the requirements, the occupied area is reduced by nearly 40 percent, and the volume of the product is reduced.
The combined objective system optical path of aiming and guiding adopts a mode of double-channel injection and single-channel injection. All optical parts and structural parts are installed on the combined objective system integrating aiming and guiding, and after being adjusted, the combined objective system serving as an independent objective module is installed in an observing and aiming guiding product through screws. The modularized, integrated and miniaturized design is realized, the two light path objective lenses are combined into one, and the combined type optical path objective lens is used as a function independent module, so that the assembly, adjustment and installation difficulty is reduced, and meanwhile, the combined type optical path objective lens is convenient to maintain. The device can keep higher stability and reliability under the influence of environmental stress such as impact, vibration, high and low temperature and the like, and meets the use requirement under the complex environmental condition.
The integrated photoelectric sighting device can be widely applied to integrated multiple light paths of white light, laser, infrared and the like, and a comprehensive photoelectric sighting product with strict requirements on the structural size of an optical system.
2) The invention can ensure the repeated precision of the integral disassembly and assembly of the combined objective and the positioning stability, a first positioning cylinder is arranged at the lower end of the first straight cylinder section, a second positioning cylinder is arranged at the lower end of the second straight cylinder section, and the first positioning cylinder and the second positioning cylinder play a role in positioning pins; the first positioning cylinder is provided with a first sealing ring, and the second positioning cylinder is provided with a second sealing ring, so that the sealing between the combined objective lens system and an external shell is ensured, and the whole airtightness of the system is realized.
3) The daytime observation and aiming objective is also provided with a field lens and a reflector; the field lens is arranged on one side of the beam splitter prism for reflecting the daytime observation and aiming light path, so that the capability of the reflected edge light beam of the daytime observation and aiming light path to be incident to the second straight cylinder section is improved, the diameter of the second straight cylinder section is reduced, and the size of the combined objective lens is reduced; the reflector and the diurnal sighting optical path reflected by the beam splitter prism form an angle of 45 degrees and are used for reflecting the diurnal sighting optical path reflected by the beam splitter prism into the second straight cylinder section.
4) The second straight cylinder section is internally provided with a frame reticle which comprises an outer frame and a reticle, the reticle is fixed on the outer frame through a fifth pressing ring, and the outer frame is fixed in the second straight cylinder section through threaded connection. The frame has realized the regulation of the upper and lower position of reticle, makes the reticle rotate through the fixed reticle of fifth clamping ring to adjust the gradient of reticle arrow point. In order to ensure that the reticle with the frame is accurately fixed on the focal plane of the daytime observation objective lens, a second space ring is arranged between the outer frame and the second straight cylinder section.
5) The side wall of the second straight cylinder section is provided with a lamp with a seat for illuminating the reticle so that scales on the reticle can be clearly seen when light is dim; and frosted glass is arranged between the lamp with the base and the reticle plate, so that light rays of the lamp with the base uniformly irradiate on the reticle plate. The division lighting mode has reliable performance, low power consumption and uniform lighting.
6) The beam splitter prism is installed from the first side of the rectangular through hole, and the beam splitter prism is fixed by the first process screw and the second process screw, so that turning of a viewing and aiming light path and transmission of a laser guidance light path in daytime are realized. The parallelism of an optical axis between a daytime observation and aiming light path and a laser guidance light path is not more than 10' by adjusting the first process screw and the second process screw and micro-adjusting the beam splitter prism, the adjusting mode is simple, and the beam splitter prism is fixed by polysulfide sealant after adjustment to keep the stability of the beam splitter prism. Fixing the cover plate with screws prevents dust from entering the optical cavity.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a cross-sectional view of a combined objective system;
FIG. 2 is a schematic view of an objective lens body without a lens mounted thereon;
FIG. 3 is a cross-sectional view of a combined objective system A-A;
fig. 4 is a left side view of the mounting portion of the beam splitter prism.
Reference numerals:
1-a first clamping ring; 2-a cemented lens; 3-cover plate; 4-a beam splitting prism; 5-an objective lens body; 501-a first groove; 502-a second groove; 503-a third groove; 504-fourth groove; 6-a second pressing ring; 7-a first positive lens; 8-a first space ring; 9-a second positive lens; 10-a third pressing ring; 11-a negative lens; 12-a fourth clamping ring; 13-field lens; 14-a mirror; 15-pressing plate; 16-a second spacer; 17-frame reticle; 1701-outer frame; 1702-reticle; 18-ground glass; 19-a lamp with a socket; 20. 25-a screw; 21-a set screw; 22-a second sealing ring; 23-a first sealing ring; 24-a third space ring; 26-first craft screw; 27-second craft screw; 28-a fifth clamping ring; 29-outer shell.
Detailed Description
A further detailed description of a combined objective system and method of tuning will be provided in conjunction with specific embodiments, which are provided for purposes of comparison and explanation only and are not intended to limit the present invention.
An aiming and guiding combined objective system, as shown in fig. 1-4, comprises a laser guidance objective and a daytime observing and aiming objective; the laser guidance objective comprises a first straight cylinder section, the daytime observation and aiming objective comprises a second straight cylinder section, and the same common objective part and the beam splitter prism 4 are used for the laser guidance objective and the daytime observation and aiming objective; the beam splitter prism 4 is arranged at the connecting position of the shared objective part and the first straight cylinder section, and the beam splitter prism 4 transmits the laser guide optical path and reflects the daytime observation and aiming optical path to realize the fusion of the laser guide objective and the daytime observation and aiming objective. The daytime viewing objective provides the daytime viewing system with an aiming objective and an aiming mark (reticle). The laser guidance objective lens provides a transmitting objective lens for the laser information field. The functions of the two parts are independent from each other, and the common shared objective lens part and the beam splitter prism are organically fused, so that the aims of imaging and emitting of the common shared objective lens part for aiming and laser guidance are fulfilled.
In the prior art, the calibers of two independent objective lenses for guidance and observation in a parallel light path are
After being fused, the light path is shared for emission, and the caliber of the objective lens part is shared
Can meet the requirements, the occupied area is reduced by nearly 40 percent, and the volume of the product is reduced.
The whole combined objective system integrating aiming and guiding adopts a cylindrical structure, and the light path adopts a mode of double-channel injection and single-channel injection. All optical parts and structural parts are installed on the combined objective system integrating aiming and guiding, and after being adjusted, the combined objective system serving as an independent objective module is installed in an observing and aiming guiding product through screws. The modularized high-temperature-resistant high-voltage switch is modularized, is convenient to assemble, adjust, disassemble and maintain, can meet the requirements of keeping high stability and reliability under the influence of environmental stresses such as impact, vibration, high and low temperature and the like, and meets the use requirements under the complex environmental conditions.
In order to ensure the repeated precision of the integral disassembly and assembly of the combined objective lens and the positioning stability, the lower end of the first straight cylinder section is provided with a first positioning cylinder, the lower end of the second straight cylinder section is provided with a second positioning cylinder, and the first positioning cylinder and the second positioning cylinder play a role in positioning pins; the first positioning cylinder is provided with a first sealing ring 23, and the second positioning cylinder is provided with a second sealing ring 22, so that the sealing between the combined objective system and an external shell 29 is ensured, and the overall airtightness of the system is realized.
The first straight cylinder section and the second straight cylinder section are arranged in parallel, and the first straight cylinder section and the shared objective lens part are coaxially arranged; in order to enable the incident light beam to enter the second straight cylinder section and improve the capability of the marginal light beam to enter the second straight cylinder section, the daytime sighting objective is also provided with a field lens 13 and a reflecting lens 14; the field lens 13 is arranged on one side of the beam splitter prism 4, which reflects the daytime viewing path, so that the capability of the reflected daytime viewing path to be incident on the second straight cylinder section is improved, the diameter of the second straight cylinder section is reduced, and the size of the combined objective lens is reduced; the reflecting mirror 14 is arranged at 45 degrees with respect to the daytime viewing path reflected by the beam splitter prism 4, and is used for reflecting the daytime viewing path reflected by the beam splitter prism 4 into the second straight cylinder section.
The common objective lens part comprises an objective lens body 5, a first positive lens 7, a second positive lens 9 and a negative lens 11; the objective lens body 5 is a hollow cylinder, and a first groove 501, a second groove 502, a third groove 503 and a fourth groove 504 are arranged in the objective lens body 5 from top to bottom, and the diameters of the grooves are reduced in sequence.
The first positive lens 7, the second positive lens 9 and the negative lens 11 are sequentially arranged in the objective lens body 5 from top to bottom. The negative lens 11 is installed in the fourth groove 504, and the upper end of the negative lens 11 is pressed and fixed by the third pressing ring 10 to play a role in locking. The third pressing ring 10 is disposed in the third groove 503, and the third pressing ring 10 is fixedly connected with the fourth groove 504 through a threaded connection. To radially restrain the negative lens 11 and prevent the negative lens 11 from moving radially, the radial dimension of the negative lens 11 matches the diameter of the fourth groove 504.
The second positive lens 9 is disposed in the second groove 502, the first spacer 8 is disposed between the second positive lens 9 and the first positive lens 7, the first spacer 8 and the first positive lens 7 are disposed in the first groove 501, and the first spacer 8 is used for adjusting a distance between the second positive lens 9 and the first positive lens 7 and fixing positions of the second positive lens 9 and the first positive lens 7. The first positive lens 7, the first spacer 8 and the second positive lens 9 are locked and fixed by the second pressing ring 6. The distance interval between the first positive lens 7 and the second positive lens 9 is adjusted by changing the height of the first space ring 8, so that the imaging quality of the combined objective system is good, and the requirement that the resolution of the day sighting objective is not more than 10' is met.
The first straight cylinder section is internally provided with a cemented lens 2, specifically, the cemented lens 2 is obtained by cementing a biconvex lens and a plano-concave lens together, the curvature radiuses of the cemented surfaces of the biconvex lens and the plano-concave lens are the same, and the cemented lens 2 is used for eliminating the chromatic aberration of the laser guidance objective lens and improving the imaging definition; the upper end of the cemented lens 2 is provided with a third space ring 24, the third space ring 24 is used for ensuring the distance interval between the cemented lens 2 and the beam splitter prism 4, and the lower end of the cemented lens 2 is provided with a first pressing ring 1 used for fixing the cemented lens 2.
And determining the focal length of the laser guidance objective lens consisting of the first positive lens 7, the second positive lens 9, the negative lens 11, the beam splitter prism 4 and the cemented lens 2 in the laser guidance objective lens by trimming the length of the third space ring 24. And measuring the focal length of the laser guidance objective lens, and determining the thickness of the third space ring 24, so that the butt joint of the combined objective lens system and a subsequent laser guidance system is facilitated.
Be provided with in the second cylinder section and take frame reticle 17, take frame reticle 17 to include outer frame 1701 and reticle 1702, reticle 1702 passes through fifth clamping ring 28 and fixes on outer frame 1701, and outer frame 1701 passes through threaded connection and fixes in the second cylinder section. The outer frame 1701 is a hollow cylindrical structure, a thread is arranged at the upper end of the outer frame 1701, the upper end of the outer frame 1701 is in threaded connection with the second straight cylindrical section, and the vertical position of the reticle 1702 is adjusted by rotating the outer frame 1701, so that the reticle 1702 is positioned on the focal plane of the daytime sighting objective composed of the first positive lens 7, the second positive lens 9, the negative lens 11, the beam splitter prism 4, the field lens 13 and the reflector 14.
In order to fix the framed reticle 17 exactly in the focal plane of the day-viewing objective, a second spacer 16 is arranged between the outer frame 1701 and the second cylinder section. The lower end of the outer frame 1701 is provided with a raised edge, the upper end of the second space ring 16 abuts against the second straight cylinder section, and the lower end of the second space ring 16 abuts against the raised edge. The thickness of second spacer 16 is determined so that reticle 1702 has a parallax of no greater than 30'.
In order to lock and fix the framed reticle 17, the side wall of the second straight cylinder section is provided with a positioning screw 21, and after the framed reticle 17 rotates in place, the positioning screw 21 is screwed tightly to lock the framed reticle 17.
A lamp with a base 19 is arranged on the side wall of the second straight cylinder section and is used for illuminating the reticle; ground glass 18 is arranged between the lamp 19 and the reticle 1702 to make the light of the lamp 19 uniformly irradiate on the reticle 1702. The division lighting mode has reliable performance, low power consumption and uniform lighting.
The connection part of the shared objective lens part and the first straight cylinder section is provided with a cylindrical through hole coaxial with the shared objective lens part and a rectangular through hole vertical to the central shaft of the shared objective lens part, and the rectangular through hole is matched with the size of the beam splitting prism 4.
The beam splitter prism 4 is installed from the first side of the rectangular through hole, and the beam splitter prism 44 is fixed by the first process screw 26 and the second process screw 27, so that turning of a day viewing optical path and transmission of a laser guidance optical path are realized. By adjusting the first process screw 26 and the second process screw 27, the beam splitter prism 4 is finely adjusted, the parallelism of the optical axis between the day observation and aiming optical path and the laser guidance optical path is not more than 10', and the beam splitter prism 4 is fixed by polysulfide sealant after adjustment, so that the stability of the beam splitter prism is kept. In order to prevent dust from entering the optical cavity, the cover plate 3 is fixed with screws 25.
The field lens 13 is installed from the second side of the rectangular through hole, and a fourth pressing ring 12 is arranged at the right end of the field lens 13 and used for pressing the field lens 13 to play a role in locking. The reflector 14 is installed from the right end, and the reflector 14 is pressed by the screw 20 and the pressing plate 15, so that the stability of the reflector is ensured.
In a specific embodiment of the present application, the radius of curvature of the first surface of the biconvex lens in the cemented lens 2 is 381.9mm when R1 is larger than 381.9mm, and the radius of curvature of the second surface R2 is 39.8 mm; the radius of curvature R1 of the first surface of the first positive lens 7 is 62.2mm, and the radius of curvature R2 of the second surface is 229 mm; the radius of curvature R1 of the first surface of the second positive lens 9 is 38.3mm, and the radius of curvature R2 of the second surface is 24.2 mm; the radius of curvature R1 of the first surface of the negative lens 11 is 35.5mm, and the radius of curvature R2 of the second surface is 55.7 mm; the radius of curvature R1 of the first surface of the field lens 13 is 217.8mm, and the radius of curvature R2 of the second surface is 75.9 mm.
The first surfaces of the cemented lens 2, the first positive lens 7, the second positive lens 9, and the negative lens 11 are upward surfaces in fig. 1, and the second surfaces are downward surfaces; the first surface of the field lens 13 is a leftward surface, and the second surface is a rightward surface.
The center thickness of the first positive lens 7 is 9mm, the center thickness of the second positive lens 9 is 19.5mm, the center thickness of the negative lens 11 is 8.2mm, the thickness of the beam splitter prism 4 is 35mm, the center thickness of the cemented lens is 9mm, the center thickness of the field lens 13 is 7mm, and the thickness of the reticle is 5 mm.
The distance between the center of the second surface of the first positive lens 7 and the center of the first surface of the second positive lens 9 is 15.8mm, and the thickness of the first spacer ring 8 is 19.9mm, so that the combined objective system has good imaging quality and meets the requirement that the resolution of an objective of a daytime sighting telescope is not more than 10 ".
The distance between the center of the second surface of the second positive lens 9 and the center of the first surface of the negative lens 11 is 23mm, the thickness of the third spacer 24 is 5mm, and the distance between the center of the second surface of the negative lens 11 and the center of the first surface of the cemented lens is 68.3 mm. The focal length of the laser guidance objective lens consisting of the first positive lens 7, the second positive lens 9, the negative lens 11, the beam splitter prism 4 and the cemented lens 2 in the laser guidance objective lens is obtained through calculation, and then the focal length of the laser guidance objective lens is determined by trimming the length of the third space ring 24.
The beam splitter prism 4 is formed by gluing two triangular prisms, and the distance between the center of the gluing surface of the beam splitter prism 4 and the center of the first surface of the field lens 13 is 19.5 mm.
The thickness of the second spacer 16 is 4.3mm, so that the reticle 1702 is at the focal length of the day sighting objective lens, and the parallax of the reticle 1702 is not more than 30'.
The first pressing ring 1, the second pressing ring 6, the third pressing ring 10, the fourth pressing ring 12 and the fifth pressing ring 28 are all hollow cylinders, the inner diameter of each cylinder is smaller than the radial size of the corresponding lens, and the outer diameter of each cylinder is larger than the radial size of the corresponding lens, so that the corresponding lens is fixed. One end of the pressing ring, which is far away from the corresponding lens, is provided with a notch for screwing the pressing ring.
The transition connection among the components of the combined objective system adopts a rigid connection mode of a pressing ring, a pressing plate 15 and a screw, so that the connection is accurate, the positioning is reliable, and looseness cannot be generated.
All mechanical parts of the objective system are made of common materials such as common aluminum plates and aluminum bars, the optical glass is K9 glass, and the objective system has the advantages of good processing performance, simple assembly process, convenience in use and adjustment, good reliability and wide application range, so that the objective system has good economical efficiency and popularization.
A method for adjusting a combined objective system for aiming and guiding comprises the following steps:
installing a common objective lens part:
specifically, a negative lens 11 is loaded and pressed by a third pressing ring 10, and then a second positive lens 9, a first spacer 8 and a first positive lens 7 are sequentially loaded and locked by a pressing ring 6. And determining the thickness of the interval between the first positive lens 7 and the second positive lens 9 to ensure that the image quality of the daytime viewing objective lens is good and meet the requirement that the identification power of an imaging system of the daytime viewing objective lens is not more than 10'.
Mounting the beam splitter prism 4, the field lens 13 and the reflector 14:
the beam splitter prism 4 is initially installed from the left end, the beam splitter prism 4 is fixed by a first process screw 26 and a second process screw 27, and turning of a day viewing and aiming light path and transmission of a laser guidance light path are achieved. A field lens 13 is installed from the right side, and the field lens 13 is locked by a fourth pressing ring 12; the reflector 14 is installed from the right end, and the reflector 14 is pressed by the screw 20 and the pressing plate 15, so that the stability of the reflector is ensured.
And screwing the frame reticle 17, adjusting the position of the reticle 1702, ensuring the parallax error of the reticle 1702 and the arrow inclination of the reticle, fixing the frame reticle through screws after adjustment, and ensuring the technical parameters of the observing and sighting system in the daytime.
Specifically, the vertical position of the framed reticle 17 is rotated to make the reticle 1702 located on the focal plane of the daytime observation and sighting objective lens composed of the positive lens 7, the positive lens 9, the negative lens 11, the beam splitter prism 4, the field lens 13 and the reflector 14; determining the thickness of the spacer 16 to ensure that the parallax of the reticle 1702 is not more than 30'; the compression screw 21 locks the belt frame reticle 17. The reticle 1702 in the reticle 17 of the locking belt frame is slightly pulled so that the arrow inclination of the reticle 1702 is not more than 30'.
The ground glass 18 is fixed with polysulfide sealant and is placed in the lamp with base 19, and the ground glass 18 can uniformly illuminate the reticle 1702.
After the daytime observation objective is assembled and adjusted, the laser guidance objective is adjusted based on the daytime observation objective, and the focal length of the laser guidance objective and the parallelism of a laser guidance light path and the daytime observation light path are ensured by adjusting the position of the beam splitter prism 4, so that the integral butt joint of the subsequent light paths is facilitated, and the use requirements of the system are met.
In the laser guidance objective lens, the upper end of the cemented lens 2 is provided with a third space ring 24, the distance interval between the cemented lens 2 and the shared part is ensured, and the lower end of the cemented lens 2 is locked by a first pressing ring 1. And determining the focal length of a guidance objective lens consisting of the positive lens 7, the positive lens 9, the negative lens 11, the beam splitter prism 4 and the cemented lens 2 in the laser guidance light path by trimming the length of the spacing ring 24. The beam splitter prism 4 is finely adjusted through the first process screw 26 and the second process screw 27, the parallelism of an optical axis between the daytime observation objective and the laser guidance objective is not more than 10', and the beam splitter prism 4 is fixed by polysulfide sealant after adjustment, so that the stability of the beam splitter prism is kept. The cover plate 3 is fixed by screws 25 to prevent dust from entering the optical cavity.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (4)
1. A method for adjusting a combined objective system for aiming and guiding is characterized in that,
adopting an aiming and guiding combined objective system, which comprises a laser guidance objective and a daytime observing and aiming objective;
the laser guidance objective comprises a first straight cylinder section, the daytime observation and aiming objective comprises a second straight cylinder section, and the laser guidance objective and the daytime observation and aiming objective adopt the same shared objective part and a beam splitter prism (4);
the first straight cylinder section and the shared objective lens part are coaxially arranged, and the second straight cylinder section and the first straight cylinder section are arranged in parallel;
the beam splitter prism is arranged at the connecting part of the shared objective part and the first straight cylinder section, transmits the laser guide optical path, reflects the daytime observation and aiming optical path and is used for realizing the fusion of the laser guide objective and the daytime observation and aiming objective;
the diurnal sighting objective further comprises a field lens (13) and a reflecting lens (14);
the field lens (13) is arranged on one side of the reflection daytime viewing and aiming light path of the beam splitter prism (4), and the reflector (14) is used for reflecting the daytime viewing and aiming light path reflected by the beam splitter prism (4) into the second straight cylinder section;
the common objective part is sequentially provided with a first positive lens (7), a second positive lens (9) and a negative lens (11) from top to bottom; the radius of curvature R1=62.2mm for the first face of the first positive lens (7), and the radius of curvature R2 for the second face is 229 mm; the radius of curvature R1=38.3mm for the first face of the second positive lens (9), and the radius of curvature R2 for the second face is 24.2 mm; the radius of curvature of the first surface of the negative lens (11) R1=35.5mm, and the radius of curvature of the second surface R2 is 55.7 mm; the center thickness of the first positive lens (7) is 9mm, the center thickness of the second positive lens (9) is 19.5mm, and the center thickness of the negative lens (11) is 8.2 mm; the distance between the center of the second surface of the first positive lens (7) and the center of the first surface of the second positive lens (9) is 15.8 mm; the distance between the center of the second surface of the second positive lens (9) and the center of the first surface of the negative lens (11) is 23 mm;
a cemented lens (2) is arranged in the first straight cylinder section, the cemented lens (2) is formed by cementing a biconvex lens and a plano-concave lens, and the curvature radiuses of the cemented surfaces of the biconvex lens and the plano-concave lens are the same; the radius of curvature of the first face of the biconvex lens is R1=381.9mm, and the radius of curvature of the second face R2 is 39.8 mm; a third space ring (24) is arranged above the cemented lens (2), and the third space ring (24) is used for adjusting the distance between the cemented lens (2) and the common objective lens part;
a frame-provided reticle (17) is arranged in the second straight cylinder section, the frame-provided reticle (17) comprises an outer frame (1701) and a reticle (1702), the reticle (1702) is fixed on the outer frame (1701) through a fifth pressing ring (28), and the outer frame (1701) is fixed in the second straight cylinder section through threaded connection;
the device also comprises a first process screw (26) and a second process screw (27) which are used for fixing the beam splitter prism (4);
the method for adjusting the combined objective system for aiming and guiding comprises the following steps:
mounting a common objective lens part, and determining the interval between the first positive lens (7) and the second positive lens (9);
a beam splitter prism (4), a field lens (13) and a reflector (14) are installed;
screwing in the frame reticle (17), adjusting the position of the reticle (1702) and ensuring the parallax and the arrow inclination of the reticle (1702);
after the daytime observation objective lens is installed and adjusted, the laser guidance objective lens is adjusted based on the daytime observation objective lens, and the focal length of the laser guidance objective lens and the parallelism between a laser guidance light path and the daytime observation light path are ensured by adjusting the position of the beam splitter prism (4);
fixing the beam splitter prism (4) by a first process screw (26) and a second process screw (27), adjusting the first process screw (26) and the second process screw (27), and micro-adjusting the beam splitter prism (4) to ensure that the parallelism of optical axes between the day sight objective and the laser guidance objective is not more than 10'.
2. The method for adjusting an aiming-guiding combined objective system according to claim 1, characterized in that a second spacer ring (16) is arranged between the outer frame (1701) and the second cylinder section, the second spacer ring (16) being used to position the reticle (1702) in the focal plane of the day-looking objective.
3. The method for tuning a combined objective system according to claim 2, wherein the second cylinder segment has a lamp (19) with a base on the sidewall for illuminating the reticle (1702); frosted glass (18) is arranged between the lamp with the base (19) and the reticle (1702), and the frosted glass (18) enables the light of the lamp with the base (19) to uniformly irradiate the reticle (1702).
4. Method for tuning a combined objective system according to one of claims 1-3, characterized in that the first cylindrical section is provided with a first sealing ring (23) at its lower end, and the second cylindrical section is provided with a second sealing ring (22) at its lower end, the first sealing ring (23) and the second sealing ring (22) being used to seal the objective system to the outer casing (29).
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