CN209746267U - Night-vision device objective lens module capable of being replaced quickly - Google Patents
Night-vision device objective lens module capable of being replaced quickly Download PDFInfo
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- CN209746267U CN209746267U CN201920564511.4U CN201920564511U CN209746267U CN 209746267 U CN209746267 U CN 209746267U CN 201920564511 U CN201920564511 U CN 201920564511U CN 209746267 U CN209746267 U CN 209746267U
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Abstract
The utility model discloses a but quick replacement's night-time vision device objective module, its part is equipped with the image intensifier in stretching into the main lens cone of night-time vision device in, the main lens cone, include: the objective lens barrel is connected with the objective lens rotating base through threads, and one end of the objective lens rotating base, which is close to the image intensifier, is provided with an outward first flange; an inward second flange is arranged in the objective lens limiting ring, an image intensifier positioning hole is arranged in the objective lens limiting ring at one side, close to the image intensifier, of the second flange and used for fixing the outer circumferential surface of the image intensifier, the objective lens rotating base penetrates through the objective lens limiting ring, and the first flange is clamped on the second flange at the side of the image intensifier positioning hole. The utility model has simple structure, can realize the quick assembly and disassembly of each part of the objective lens module, and has convenient operation; and the image intensifier positioning hole is arranged, so that the image intensifier can be fixed, the image intensifier is stable in the main lens cone, and the image intensifying effect is better.
Description
Technical Field
The utility model belongs to the technical field of the night-time vision device, especially, relate to a but quick replacement's night-time vision device objective module.
Background
The night vision device is a night external sighting device which takes an image intensifier as a core device, does not need an infrared searchlight to illuminate a target when in work, and observes and aims the target by utilizing light rays reflected by the target under weak illumination to be intensified into a visible image which can be felt by human eyes on a fluorescent screen through the image intensifier. Night vision devices typically include an objective lens, an image intensifier, and an eyepiece. In military applications, quick disassembly and assembly of the night vision device is required, and quick replacement of parts of the objective part may be required. The objective lens of the existing night vision device has the problems that the disassembly, the overhaul and the maintenance are inconvenient, and the image intensifier is unstable in the main lens cone, easy to damage and unstable, so that the imaging effect is poor.
SUMMERY OF THE UTILITY MODEL
in order to solve the technical problem, the utility model provides a but quick replacement's night-time vision device objective module is the connection of dismantling between each part, can realize each part quick assembly disassembly in the objective module.
A quick replaceable objective module for a night vision device, which partially extends into a main barrel of the night vision device, the main barrel having an image intensifier disposed therein, comprising:
The part of the outer wall of the objective lens barrel, which is close to the main lens barrel, is provided with a first external thread;
The middle part of the objective lens rotating base is provided with a first internal thread, the first external thread is in threaded connection with the first internal thread, and one end of the objective lens rotating base, which is close to the image intensifier, is provided with an outward first flange;
The objective lens limiting ring is internally provided with an inward second flange, an image intensifier locating hole is formed in the objective lens limiting ring on one side, close to the image intensifier, of the second flange and used for fixing the outer circumferential surface of the image intensifier, the objective lens rotating base penetrates through the objective lens limiting ring, and the first flange is clamped on the second flange on the side of the image intensifier locating hole.
Above technical scheme is preferred, objective module still includes objective antiskid line shell, objective antiskid line shell cover is established objective lens barrel with objective rotating base stretches out on the part of primary lens barrel, objective antiskid line shell with objective lens barrel can dismantle the connection, objective antiskid line shell with be equipped with the clearance between objective rotating base.
Above technical scheme is preferred, objective module still includes objective window mirror subassembly, objective window mirror subassembly part stretches into in the antiskid line shell of objective, and with the objective lens barrel is kept away from the one end detachable connection of image intensifier.
Above technical scheme is preferred, the objective module still includes the spacing clamping ring of objective, the spacing clamping ring cover of objective is established be close to on the antiskid line shell of objective the one end of the spacing lasso of objective, be equipped with axial locating part on the spacing clamping ring of objective, the second flange is kept away from like intensifier one side be equipped with the arch in the spacing lasso of objective, the locating part stretches into in the spacing lasso of objective, and can with the arch produces the interference.
above technical scheme is preferred, the spacing clamp collar of objective includes the clamp collar body, be equipped with a fracture on the clamp collar body, fracture one side be equipped with breach and screw hole on the clamp collar body, the fracture opposite side corresponding also is equipped with the screw hole on the clamp collar body.
Above technical scheme is preferred, the breach is including having first surface and the second surface that is certain angle, wherein be equipped with the vertically on the first surface the screw hole, the breach is followed one side terminal surface of clamp ring body link up to the opposite side terminal surface.
above technical scheme is preferred, the middle part of objective anti-skidding line shell is equipped with the internal thread, the corresponding external screw thread that is equipped with on the objective lens barrel, in the objective anti-skidding line shell the internal thread is kept away from one side of objective rotating base is equipped with the inner chamber, is used for holding objective window subassembly, the inner wall of objective anti-skidding line shell is in the installation department is extended to the internal thread opposite side, is used for the installation the spacing clamping ring of objective.
Preferably, in the above technical solution, the cross section of the protrusion is rectangular, and the protrusion extends from the side end surface of the second flange to the side end surface of the objective lens position-limiting ferrule from the second flange in the direction of the objective lens window mirror assembly.
The utility model has the advantages and positive effects that: the utility model provides a night-vision device objective lens module capable of being replaced quickly, which comprises an objective lens cone, an objective lens rotating base and an objective lens limiting ferrule, wherein the objective lens cone is used for installing an objective lens so as to observe a target object; the objective lens rotating base is used for supporting the objective lens barrel and can rotate relatively, so that the definition of the objective lens is convenient to adjust; the objective lens limiting ferrule is used for realizing connection with the main lens barrel, and the arrangement of the first flange and the second flange plays a role in positioning the objective lens rotating base. All parts are detachably connected, the structure is simple, the parts of the objective lens module can be quickly disassembled and assembled, and the operation is convenient; and the image intensifier positioning hole is arranged, so that the image intensifier can be fixed, the image intensifier is stable in the main lens cone, and the image intensifying effect is better.
Drawings
Fig. 1 is a schematic structural diagram of a lens barrel according to an embodiment of the present invention;
fig. 2 is a schematic half-sectional view of a lens barrel according to an embodiment of the present invention;
Fig. 3 is a schematic half-sectional view of a lens barrel according to an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a main lens barrel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an objective lens module according to an embodiment of the present invention;
Fig. 6 is a schematic half-sectional view of an objective lens module according to an embodiment of the present invention;
fig. 7 is a schematic half-sectional view of an objective lens module according to an embodiment of the present invention;
Fig. 8 is a schematic structural diagram of an objective lens position-limiting clamping ring according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an objective lens position-limiting ferrule according to an embodiment of the present invention;
Fig. 10 is a schematic structural diagram of an objective lens antiskid housing according to an embodiment of the present invention;
Fig. 11 is a schematic structural view of an eyepiece module according to an embodiment of the present invention;
Fig. 12 is a half-sectional view of an eyepiece module provided by an embodiment of the present invention;
Fig. 13 is a schematic structural diagram of an image intensifier base according to an embodiment of the present invention;
fig. 14 is a schematic structural view of an eyepiece lens barrel according to an embodiment of the present invention.
Wherein: 1. a main barrel; 2. an objective lens module; 3. an eyepiece module; 4. an image intensifier; 21. an objective lens barrel; 22. an objective lens rotating base; 23. an objective lens limiting ferrule; 24. an objective lens anti-skid thread housing; 25. an objective lens window mirror assembly; 26. an objective lens limiting clamping ring; 221. a first flange; 231. a second flange; 232. an image intensifier positioning hole; 233. a protrusion; 241. anti-skid projections; 242. an inner cavity; 243. an installation part; 251. an objective lens window mirror housing; 252. objective lens window mirror glass; 261. a clamp ring body; 262. a notch; 263. a threaded hole; 264. a through hole; 265. breaking off; 31. an eyepiece barrel; 32. an image intensifier base; 33. an ocular screw thread fixing ring; 34. a diopter lens assembly; 311. a clamping block; 321. a first boss; 322. a second boss; 3211. a bayonet; 341. diopter lens housing.
Detailed Description
it should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to solve the problem that the conventional night vision device is inconvenient to disassemble, assemble and repair, the present embodiment provides a night vision device objective lens module capable of being replaced quickly, as shown in fig. 1-3, which includes a main lens barrel 1, an objective lens module 2, an eyepiece module 3 and an image intensifier 4, wherein the main lens barrel 1 is a hollow structure with two open ends, and the size of the objective lens module 2 is larger than that of the eyepiece module 3 in the present embodiment, so that as shown in fig. 4, the aperture of one end of the main lens barrel 1 is larger than that of the other end. The main lens barrel 1 plays a supporting role for each component module; the objective module 2 is used for observing an object, the observed weak optical image is enhanced through the image enhancer 4, and the human eye observes the enhanced optical image through the eyepiece assembly. One end of the objective lens module 2 extends into one end of the main lens barrel 1, the objective lens module 2 is detachably connected with one end of the main lens barrel 1, and an image intensifier positioning hole 232 is formed in one end, extending into the main lens barrel 1, of the objective lens module 2; one end of the eyepiece module 3 extends into the other end of the main lens barrel 1, the eyepiece module 3 is detachably connected with the other end of the main lens barrel 1, one end of the eyepiece module 3 extending into the main lens barrel 1 is provided with an image intensifier base 32, and a first boss 321 is axially arranged at one end of the image intensifier base 32 close to the image intensifier 4; one end of the image intensifier 4 is provided with a groove, the image intensifier 4 is arranged in the main lens cone 1, the first boss 321 extends into the groove, and the other end of the image intensifier 4 extends into the image intensifier positioning hole 232.
the objective lens module 2 and the eyepiece lens module 3 of the present embodiment are both detachably connected to the main barrel 1, and the image intensifier 4 is disposed in the main barrel 1, and the image intensifier positioning hole 232 of the objective lens module 2 and the image intensifier base 32 of the eyepiece lens module 3 cooperate to fix the image intensifier 4 in the main barrel 1; this embodiment simple structure, each part module is the detachable connection, can realize the quick assembly disassembly of each part module, convenient operation.
can dismantle in this application and connect and can be whole for the joint also can be whole for threaded connection also can be partly for the remaining part threaded connection of joint, can dismantle in this embodiment and connect whole for threaded connection.
The objective module 2, as shown in fig. 5-7, includes an objective lens barrel 21, an objective lens rotating base 22, and an objective lens position-limiting ferrule 23. An objective lens group is arranged in the objective lens barrel 21, and a first external thread is arranged on the part of the outer wall of the objective lens barrel 21, which is close to the main lens barrel 1; a first internal thread is arranged in the middle of the objective lens rotating base 22, the first external thread is in threaded connection with the first internal thread, and the threaded connection enables the objective lens barrel 21 to rotate relative to the objective lens rotating base 22 so as to enable a target image to be clear; one end of the objective lens rotating base 22 close to the image intensifier 4 is provided with an outward first flange 221; an inward second flange 231 is arranged in the objective lens limiting ferrule 23, an image intensifier positioning hole 232 is arranged in the objective lens limiting ferrule 23 at one side of the second flange 231 close to the image intensifier 4, the objective lens rotating base 22 penetrates through the objective lens limiting ferrule 23, the first flange 221 is clamped on the second flange 231 at one side of the image intensifier positioning hole 232, the other end of the image intensifier 4 extends into the image intensifier positioning hole 232, and the objective lens limiting ferrule 23 is detachably connected with one end of the main lens cone 1.
The objective lens barrel is used for mounting an objective lens so as to observe a target object; the objective lens rotating base is used for supporting the objective lens barrel and can rotate relatively, so that the definition of the objective lens is convenient to adjust; the objective lens limiting ferrule is used for realizing connection with the main lens barrel, and the arrangement of the first flange and the second flange plays a role in positioning the objective lens rotating base. All parts are detachably connected, the structure is simple, the parts of the objective lens module can be quickly disassembled and assembled, and the operation is convenient; and the image intensifier positioning hole is arranged, so that the image intensifier can be fixed, the image intensifier is stable in the main lens cone, and the image intensifying effect is better.
Specifically, in the present embodiment, the plurality of lenses of the objective lens group are sequentially mounted inside the objective lens barrel 21. The part of the outer wall of the objective lens cone 21 close to the main lens cone 1 is provided with a first external thread; a first internal thread is arranged in the middle of the objective lens rotating base 22, and the first external thread is in threaded connection with the first internal thread; one end of the objective lens rotating base 22 close to the image intensifier 4 is provided with an outward first flange 221; the objective lens limiting ferrule 23 is provided with a second external thread, the inner wall of one end of the main lens barrel 1 is provided with a second internal thread, the second external thread is in threaded connection with the second internal thread, an inward second flange 231 is arranged in the objective lens limiting ferrule 23, an image intensifier positioning hole 232 is arranged on one side of the second flange 231 close to the image intensifier 4, the objective lens rotating base 22 passes through the objective lens limiting ferrule 23, the first flange 221 is clamped on the second flange 231 on the side of the image intensifier positioning hole 232, and the other end of the image intensifier 4 extends into the image intensifier positioning hole 232. The aperture of the image intensifier positioning hole 232 is matched with the outer diameter of the image intensifier 4. The side end face of the first flange 221 is provided with a sealing groove, and a sealing ring is arranged in the sealing groove, so that the sealing property of the connection between the objective lens rotating base 22 and the objective lens limiting ferrule 23 can be ensured. The outer wall of the objective lens cone 21 is provided with a sealing groove on each of two sides of the first external thread, and a sealing ring is arranged in each sealing groove, so that the sealing property of the objective lens cone 21 connected with the objective lens rotating base 22 can be ensured. The objective lens limiting ferrule 23 is provided with a sealing groove, and a sealing ring is arranged in the sealing groove, so that the sealing property of the objective lens limiting ferrule 23 connected with the main lens barrel 1 can be ensured.
in order to rotate the objective lens barrel 21 conveniently, the objective lens module 2 further comprises an objective lens anti-skid pattern shell 24, the objective lens anti-skid pattern shell 24 is sleeved on the part, extending out of the main lens barrel 1, of the objective lens barrel 21 and the objective lens rotating base 22, the objective lens anti-skid pattern shell 24 is detachably connected with the objective lens barrel 21, and a gap is formed between the objective lens anti-skid pattern shell 24 and the objective lens rotating base 22. Specifically, the objective lens anti-skid thread casing 24 is provided with internal threads, the objective lens barrel 21 is correspondingly provided with external threads, and the objective lens anti-skid thread casing 24 and the objective lens barrel 21 are fastened through threads.
in order to protect the objective lens assembly in the objective lens barrel 21, the objective module 2 further includes an objective lens window mirror assembly 25, wherein the objective lens window mirror assembly 25 partially extends into the objective lens anti-slip casing 24 and is detachably connected to the end of the objective lens barrel 21 away from the image intensifier 4. Specifically, the objective lens window mirror assembly 25 includes an objective lens window mirror housing 251 and an objective lens window mirror glass 252 disposed at the end thereof, a cavity is disposed at the left end of the objective lens anti-skid thread housing 24, the objective lens window mirror housing 251 extends into the cavity, an internal thread is disposed at the portion of the objective lens window mirror housing 251 extending into the cavity, an external thread is disposed on the objective lens barrel 21, and the objective lens window mirror housing 251 extends into the cavity of the objective lens anti-skid thread housing 24 and is in threaded connection with the objective lens barrel 21. A sealing ring is arranged between the objective lens anti-skid vein shell 24 and the objective lens window lens shell 251, so that the connection tightness of the objective lens anti-skid vein shell and the objective lens window lens shell can be ensured.
In order to limit the rotation of the objective lens barrel 21 relative to the objective lens rotating base 22 within 360 °, the objective lens module 2 further includes an objective lens limiting clamping ring 26, and the objective lens limiting clamping ring 26 is sleeved on one end of the objective lens anti-skid casing 24 close to the objective lens limiting ring 23. As shown in fig. 8, the main body of the objective lens position-limiting clamping ring 26 is a ring-shaped clamping ring body 261, a break 265 is provided on the clamping ring body 261, and a notch 262 and a threaded hole 263 for installing a screw are provided on the clamping ring body 261 on one side of the break 265. In this embodiment, the notch 262 has a first surface and a second surface with a certain angle, wherein the first surface is provided with a vertical threaded hole 263. In order to facilitate the screw tightening operation, the notch penetrates from one end face of the objective lens limiting clamping ring 26 to the other end face. The clamp ring body 261 on the other side of the fracture 265 is correspondingly provided with a threaded hole, and the objective lens limiting clamp ring 26 can be fixed on the objective lens anti-skid thread shell 24 through screwing. The objective lens limiting clamping ring 26 can also be provided with an internal thread, and the objective lens anti-skid thread shell 24 is correspondingly provided with an external thread, and the two are connected and fastened through the threads. The objective lens position-limiting collar 26 is provided with an axial through hole 264, and a position-limiting member is provided in the through hole 264, as shown in fig. 9, a protrusion 233 is provided in the objective lens position-limiting collar 23 on the side of the second flange 231 away from the image intensifier 4, and the position-limiting member extends into the objective lens position-limiting collar 23 and can interfere with the protrusion 233. The cross section of the projection 233 in this embodiment is rectangular, and it extends from the left end face of the second flange 231 to the left end face of the objective lens position restricting collar 23. The objective lens limiting clamping ring 26, the objective lens anti-skid pattern shell 24, the objective lens window mirror component 25 and the objective lens barrel 21 are connected into a whole, the objective lens anti-skid pattern shell 24 is rotated, the objective lens limiting clamping ring 26, the objective lens anti-skid pattern shell 24, the objective lens window mirror component 25 and the objective lens barrel 21 rotate relative to the objective lens rotating base 22 together, and the objective lens barrel 21 is limited to rotate within 360 degrees relative to the objective lens rotating base 22 because the limiting piece rotates for a circle and then interferes with the bulge 233 in the objective lens limiting ring 23.
the anti-slip shell 24 of the objective lens has a specific structure as shown in fig. 10, wherein the middle part of the shell is provided with internal threads, and the outer surface of the shell is uniformly provided with anti-slip protrusions 241. The left end of the internal thread is provided with an inner cavity 242 for accommodating the objective lens barrel and the objective lens window assembly, and the inner wall of the objective lens anti-skid thread shell at the right end of the internal thread is provided with a protruding mounting part 243 for mounting the objective lens limiting clamping ring 26.
As shown in fig. 11 and 12, the eyepiece module 3 includes an eyepiece barrel 31 and an image intensifier base 32. An eyepiece lens group is arranged in the eyepiece lens barrel 31; the image intensifier base 32 is used for mounting the image intensifier 4, as shown in fig. 13, a second boss 322 is axially arranged at one end of the image intensifier base 32, which is far away from the image intensifier 4, an inner hole of the second boss 322 is sleeved at one end of the eyepiece lens barrel 31, which is close to the image intensifier 4, and a side end face of the eyepiece lens barrel 31 abuts against a side end face of the second boss 322.
The eyepiece lens barrel is used for mounting an eyepiece lens so as to be beneficial to observing a target object by human eyes; the axial that the image intensifier base is close to image intensifier one end is equipped with first boss for stretch into the recess of image intensifier, can effectively restrict image intensifier's circumference and rock, and the axial that the image intensifier base kept away from image intensifier one end is equipped with the second boss, is used for being connected with the eyepiece lens cone. The first boss can limit the image intensifier from shaking, so that the image intensifier is stable in the main lens cone, the image intensifying effect is better, and the service life of the image intensifier is prolonged.
in order to further improve the stability of the connection between the eyepiece lens barrel 31 and the image intensifier base 32, as shown in fig. 14, a latch 311 is disposed on the outer circumferential surface of the connection between the eyepiece lens barrel 31 and the image intensifier base 32, a bayonet 3211 is correspondingly disposed on the second boss 322, and the latch 311 is inserted into the bayonet 3211. The number of the latch 311 may be 1, 2, 3 or more, and the bayonets 3211 are disposed corresponding to the latch 311. In this embodiment, there are 3 fastening blocks 311, and 3 fastening holes 3211 are provided.
The other end of main lens cone 1 is equipped with the internal thread, and the pot head that keeps away from image intensifier base 32 of eyepiece lens cone 31 is equipped with eyepiece screw thread retainer plate 33, and eyepiece screw thread retainer plate 33 is equipped with the external screw thread, eyepiece screw thread retainer plate 33 and main lens cone 1 threaded connection. Optionally, two sealing grooves are formed in eyepiece barrel 31, and sealing rings are arranged in the sealing grooves, so that the sealing performance of connection between eyepiece barrel 31 and main barrel 1 can be ensured.
In consideration of the difference in vision of each eye when the user is not convenient to wear the glasses for watching, the eyepiece module 3 further includes a diopter lens assembly 34, the diopter lens assembly 34 includes a diopter lens housing 341 and a diopter lens arranged thereon, the diopter lens assembly 34 is covered on the outer side of the eyepiece screw fixing ring 33, the diopter lens housing 341 is provided with an external thread, and the diopter lens housing 341 is in threaded connection with the main barrel 1.
The installation process of this embodiment: assembling an objective lens assembly, wherein a sealing ring is arranged on an objective lens barrel 21, an objective lens rotating base 22 and the objective lens barrel 21 are installed in a threaded manner, the sealing ring is arranged on the objective lens rotating base 22, one side of an objective lens limiting ferrule 23, which is provided with an image intensifier positioning hole 232, faces the objective lens rotating base 22 and is sleeved on the left side of the objective lens rotating base 22, and the left end face of a first flange 221 of the objective lens rotating base 22 is in contact with the right end face of a second flange 231 of the objective lens limiting ferrule 23; an objective lens anti-skid shell 24 is arranged on an objective lens barrel 21, an objective lens window lens assembly 25 is arranged at the left end of the objective lens anti-skid shell 24, an objective lens limiting clamping ring 26 is sleeved at the right end of the objective lens anti-skid shell 24, a limiting piece in the objective lens limiting clamping ring 26 is adjusted to be in contact with the side surface of a bulge 233 in the objective lens limiting ring 23, a fracture of the objective lens limiting clamping ring 26 is screwed by a screw, and the image intensifier 4 partially extends into an image intensifier positioning hole 232 of the objective lens limiting ring 23; assembling an eyepiece assembly, enabling the bayonet 3211 of the image intensifier base 32 to correspond to the fixture block 311 of the eyepiece lens barrel 31, and clamping the second boss 322 of the image intensifier base 32 on the outer surface of the eyepiece lens barrel 31; an eyepiece thread fixing ring 33 is sleeved at the other end of the eyepiece lens barrel 31 opposite to the fixture block 311, and a sealing ring is sleeved on a sealing groove of the eyepiece lens barrel 31; inserting the objective lens module 2 and the image intensifier 4 from the large end of the main lens barrel 1, and screwing the objective lens limiting ferrule 23 and the thread on the main lens barrel 1; the ocular lens module 3 is extended into the small end of the main lens cone 1, the first boss 321 of the objective lens rotating base 22 is extended into the groove of the image intensifier 4, and the ocular lens thread fixing ring 33 and the thread on the main lens cone 1 are screwed; the diopter lens assembly 34 is screwed into the small end of the main barrel 1. Because the objective lens and the ocular lens are modularized, and all parts in each module are in threaded connection, the modules and all parts are quickly and simply disassembled, and the disassembling efficiency is effectively improved.
while one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (8)
1. A night vision device objective lens module capable of being replaced quickly, which partially extends into a main lens barrel of a night vision device, wherein an image intensifier is arranged in the main lens barrel, and the night vision device objective lens module is characterized by comprising:
the part of the outer wall of the objective lens barrel, which is close to the main lens barrel, is provided with a first external thread;
The middle part of the objective lens rotating base is provided with a first internal thread, the first external thread is in threaded connection with the first internal thread, and one end of the objective lens rotating base, which is close to the image intensifier, is provided with an outward first flange;
The objective lens limiting ring is internally provided with an inward second flange, an image intensifier locating hole is formed in the objective lens limiting ring on one side, close to the image intensifier, of the second flange and used for fixing the outer circumferential surface of the image intensifier, the objective lens rotating base penetrates through the objective lens limiting ring, and the first flange is clamped on the second flange on the side of the image intensifier locating hole.
2. The quick replaceable night vision objective module of claim 1 further comprising: the objective lens module further comprises an objective lens anti-skid pattern shell, the objective lens anti-skid pattern shell is sleeved on the part, extending out of the main lens barrel, of the objective lens barrel and the objective lens rotating base, the objective lens anti-skid pattern shell is detachably connected with the objective lens barrel, and a gap is formed between the objective lens anti-skid pattern shell and the objective lens rotating base.
3. The quick replaceable night vision objective module of claim 2 further comprising: the objective lens module further comprises an objective lens window mirror assembly, wherein the objective lens window mirror assembly partially extends into the objective lens anti-skid grain shell and is detachably connected with one end, far away from the image intensifier, of the objective lens barrel.
4. the quick replaceable night vision objective module of claim 3 wherein: the objective module further comprises an objective lens limiting clamping ring, the objective lens limiting clamping ring is arranged on the objective lens anti-skid thread shell and close to one end of the objective lens limiting ring, an axial limiting part is arranged on the objective lens limiting clamping ring, the second flange is far away from one side of the image intensifier, a protrusion is arranged in the objective lens limiting ring, and the limiting part stretches into the objective lens limiting ring and can interfere with the protrusion.
5. The quick replaceable night vision objective module of claim 4 wherein: the objective lens limiting clamping ring comprises a clamping ring body, a fracture is arranged on the clamping ring body, a notch and a threaded hole are formed in the clamping ring body on one side of the fracture, and a threaded hole is correspondingly formed in the clamping ring body on the other side of the fracture.
6. The quick replaceable night vision objective module of claim 5 wherein: the breach is including having first surface and the second surface that is certain angle, wherein be equipped with the vertically on the first surface the screw hole, the breach is followed one side terminal surface of clamp ring body link up to opposite side terminal surface.
7. The quick replaceable objective lens module for a night vision device as claimed in claim 4, wherein the objective lens barrel has an internal thread formed at a middle portion thereof, and an external thread formed on the objective lens barrel, wherein an inner cavity is formed at a side of the internal thread away from the objective lens rotating base for accommodating the objective lens window assembly, and a mounting portion is extended from an inner wall of the objective lens anti-slip thread housing at the other side of the internal thread for mounting the objective lens limiting clamping ring.
8. The quick replaceable night vision objective module of claim 4 wherein: the cross section of the bulge is rectangular, and the bulge extends from the side end face of the second flange to the side end face of the objective lens limiting ferrule from the second flange to the direction of the objective lens window mirror assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920564511.4U CN209746267U (en) | 2019-04-24 | 2019-04-24 | Night-vision device objective lens module capable of being replaced quickly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920564511.4U CN209746267U (en) | 2019-04-24 | 2019-04-24 | Night-vision device objective lens module capable of being replaced quickly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209746267U true CN209746267U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920564511.4U Active CN209746267U (en) | 2019-04-24 | 2019-04-24 | Night-vision device objective lens module capable of being replaced quickly |
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| Country | Link |
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| CN (1) | CN209746267U (en) |
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2019
- 2019-04-24 CN CN201920564511.4U patent/CN209746267U/en active Active
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