Optical system of eight-fold-ratio white light sighting telescope

Abstract

The invention discloses an optical system of an eight-fold-ratio white light sighting telescope. The optical system comprises an objective lens bonding lens, an objective lens second lens, a first field lens, a reticle, a second field lens, a pair of image rotation lenses, a field lens bonding lens, a bonding eyepiece and an eyepiece third lens which are sequentially and coaxially arranged from the object space to the image space. Wherein the image rotation lens close to one side of the object space is a zoom lens, the image rotation lenses close to the image space are compensation lenses, and the zoom lens and the compensation lenses are symmetrically arranged.

Description

Technical Field

[0001] The invention relates to the technical field of sights, and in particular to an optical system of an eight-fold ratio white light sight. Background Art

[0002] At present, in order to improve the accuracy of gun shooting, optical sights are generally installed on them. High-magnification white light sights have a wide range of uses. They can be used to search for targets at low magnification and large field of view, and to magnify and observe targets at high magnification and small field of view. Therefore, there is a large demand for high-magnification sights in the market, but current high-magnification white light sights generally have problems such as poor image quality, complex structure, and low stability, and are difficult to withstand the impact of the gun. At the same time, most white light sights do not pay attention to human-machine function design, which also brings many inconveniences to users. Summary of the invention

[0003] The purpose of the present invention is to provide an optical system of an eight-fold ratio white light sight, thereby improving the image quality of the white light sight.

[0004] In order to solve the above technical problems, the present invention provides a technical solution: an optical system of an eight-fold ratio white light sight, comprising an objective lens cemented lens, an objective lens second lens, a first field lens, a graticule, a second field lens, a pair of image transfer lenses, a field lens cemented lens, a cemented eyepiece, and an eyepiece third lens, which are coaxially arranged in sequence from the object side to the image side; wherein the image transfer lens close to the object side is a magnification lens, and the image transfer lenses close to the image side are compensation lenses, and the magnification lens and the compensation lens are symmetrically arranged.

[0005] According to the above scheme, the objective lens cemented lens includes a first biconvex lens and a first meniscus lens cemented and connected from the object side to the image side;

[0006] The second lens of the objective lens is a second meniscus lens;

[0007] The first field mirror is the third meniscus lens;

[0008] The second field mirror is a second double convex lens;

[0009] The zoom lens includes a fourth meniscus lens and a third biconvex lens cemented together from the object side to the image side; the compensation lens includes a fourth biconvex lens and a fifth meniscus lens cemented together from the object side to the image side;

[0010] The field lens cemented lens comprises a sixth meniscus lens and a seventh meniscus lens cemented and connected from the object side to the image side;

[0011] The cemented eyepiece includes a first biconcave lens and a fifth biconvex lens cemented and connected from the object side to the image side;

[0012] The third lens of the eyepiece is a sixth double convex lens.

[0013] According to the above scheme, the objective lens cemented lens and the objective lens second lens constitute the objective lens optical group, and the cemented eyepiece and the eyepiece third lens constitute the eyepiece optical group;

[0014] The objective lens group forms an image of a distant object on a first image plane, and the zoom lens and the compensating lens invert the inverted image of the first image plane and form an image on a second image plane;

[0015] The air gap between the objective lens and the second lens of the objective lens group is 8 to 9 mm;

[0016] The air gap between the second lens of the objective lens and the first field lens is 47-48 mm;

[0017] The air gap between the first field mirror and the reticle is 7 to 8 mm;

[0018] The air gap between the reticle and the second field lens is 6 to 8 mm;

[0019] The air gap between the field lens cemented lens and the second image plane is 1 to 2 mm;

[0020] The air gap between the first image plane and the second image plane is 83-84 mm;

[0021] The air gap between the second image plane and the cemented eyepiece is 10-11 mm;

[0022] The air gap between the glued eyepiece and the third lens of the eyepiece is 12 to 13 mm.

[0023] According to the above scheme, the variable air gap range between the second field lens and the zoom lens is 0.5-35mm; the variable air gap range between the zoom lens and the compensation lens is 2-5mm; the variable air gap range between the compensation lens and the field lens cemented lens is 8-45mm.

[0024] According to the above scheme, the focal length F0 of the objective optical group and the focal length F e Meet F0 / F e ≤1.62.

[0025] An eight-fold white light sight provided with an optical system of the eight-fold white light sight described above comprises a lens tube, wherein an objective lens group, an image transfer lens group and an eyepiece group are sequentially arranged inside the lens tube from the object side to the image side; a variable power hand wheel group transmission-connected to the image transfer lens group and an adjustment screw group for adjusting the trajectory and windage are arranged outside the lens tube; the objective lens group comprises an objective lens cemented lens and an objective lens second lens, the image transfer lens group comprises a first field lens, a graticule, a second field lens, a variable power lens, a compensation lens and a field lens cemented lens, and the eyepiece group comprises a cemented eyepiece and an eyepiece third lens.

[0026] According to the above scheme, the image transfer lens group includes a graticule joint and a field lens pressing ring, the graticule plate is arranged in the graticule joint, the first field lens is arranged in the field lens pressing ring, a graticule spacer is arranged between the graticule plate and the first field lens, and the field lens pressing ring is threadedly connected to the outer side of the graticule joint and fixes the first field lens and the graticule plate;

[0027] The image-transmitting lens assembly further comprises an image-transmitting lens tube and a zoom tube; the end of the image-transmitting lens tube close to the object side is threadedly connected to the inner side of the dividing joint and fixes the second field lens in the dividing joint; the end of the image-transmitting lens tube close to the image side is a ball head structure, and the field lens cemented lens is fixed in the ball head structure by a rear field lens pressure ring; the zoom tube is sleeved on the outside of the image-transmitting lens tube, and both ends of the image-transmitting lens tube extend from the zoom tube, the outer diameter of the ball head structure is larger than the outer diameter of the zoom tube, and a zoom gasket sleeved on the outside of the image-transmitting lens tube is provided between the ball head and the zoom tube;

[0028] A straight groove is arranged on the side wall of the image transfer lens tube; a first curved magnification change groove and a second curved magnification change groove are arranged on the side wall of the magnification change tube; the magnification change lens and the compensation lens are both fixed by the image transfer lens frame in the image transfer lens tube; a sliding sleeve screw is fixed on the side wall of the steering lens frame; a sliding sleeve is arranged on the outer end of the sliding sleeve screw; a sliding sleeve connected to the steering lens frame for fixing the magnification change lens passes through the straight groove of the image transfer lens tube and is arranged in the first curved magnification change groove; a sliding sleeve connected to the steering lens frame for fixing the compensation lens passes through the straight groove of the image transfer lens tube and is arranged in the second curved magnification change groove.

[0029] According to the above scheme, the ball head structure of the steering lens tube is fixed in the lens tube through the front washer, the elastic washer and the ball head pressure ring, and a slot is provided on the side wall of the ball head structure of the steering lens tube, and an inner end of a limit screw is located in the slot, and the outer end of the limit screw is fixed to the lens tube;

[0030] The magnification handwheel group includes a magnification handwheel and a magnification screw. The outer side of the end of the lens tube close to the image side is sleeved with a magnification handwheel. One end of the magnification handwheel contacts the lens tube, and the other end contacts the eyepiece barrel. The eyepiece barrel is a part of the eyepiece group that is fixed to the end of the lens tube close to the image side, and a third sealing ring and a second sealing ring are respectively provided at the contact surface positions of the magnification handwheel, the lens tube and the eyepiece barrel; the inner side of the magnification screw is a smooth rod portion, and the outer side is a threaded portion. The smooth rod portion of the magnification screw passes through the magnification opening groove and is located in the limit groove. The magnification opening groove is arranged on the side wall of the lens tube, and the limit groove is arranged on the side wall of the magnification tube.

[0031] According to the above scheme, the adjusting screw group includes a pair of vertically arranged adjusting structures; the adjusting structure includes an adjusting handwheel seat fixed to the mirror tube, an adjusting handle is arranged above the adjusting handwheel seat, and an adjusting screw is arranged below the adjusting handwheel seat; the adjusting handle rotates and slides in the slot hole at the top of the adjusting handwheel seat, and a handwheel seat pressure ring for axially limiting the adjusting handle is connected to the upper part of the adjusting handwheel seat, and the bottom of the adjusting handle is a flat rod; the top of the adjusting screw is provided with a flat socket matching the adjusting handle, and a wear-reducing screw is fixed to the bottom of the adjusting screw.

[0032] According to the above scheme, the inner wall of the slot hole of the adjusting handwheel seat for placing the adjusting handle is evenly distributed with a tooth structure in the circumferential direction, a pair of blind holes is arranged in the outer side of the adjusting handle, a positioning pin is arranged in the blind hole, a positioning hole is arranged at the outer end of the positioning pin, a metal ball is arranged in the positioning hole, a positioning column is arranged at the inner end of the positioning pin, a spring is sleeved on the positioning column, and the other end of the spring is in contact with the bottom of the blind hole.

[0033] The beneficial effects of the present invention are as follows: 1. The first image-transmitting lens and the second image-transmitting lens as a zoom group and a compensation group are mirror-symmetrical, which not only saves costs and brings convenience to design, processing, and assembly correction, but is also very beneficial to its aberration correction, including automatic compensation for vertical axis aberration, and the two groups of axial aberrations can be corrected separately.

[0034] 2. The "positive-positive" optical zoom structure makes the overall structure of the scope more compact, and can achieve smooth zoom at different magnifications, ensuring excellent image quality.

[0035] 3. The structure of the front scale allows the scale surface to change with the magnification during the zoom process, reducing the zoom error.

[0036] 4. There should be enough space between the glass reticle and the front and rear mirror groups for parallax adjustment in subsequent assembly.

[0037] 5. The optical system ensures that the image quality at both high and low magnifications meets the requirements of the human eye. At the same time, the chromatic aberration at high magnification is not obvious. It can be used normally during the magnification change from high to low magnification, and the system aberration correction is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural diagram of the optical system of the eight-fold white light sight according to the first embodiment of the present invention;

[0039] Figure 2 It is a spot diagram of an equivalent eyepiece of the eight-fold ratio white light sight optical system of the first embodiment of the present invention at 1x;

[0040] Figure 3 is a spot diagram of an equivalent eyepiece of the eight-fold ratio white light sight optical system of the first embodiment of the present invention at 8 times magnification;

[0041] Figure 4 It is the objective lens point diagram of the eight-fold ratio white light sight optical system of the first embodiment of the present invention;

[0042] Figure 5 It is a cross-sectional view from a first viewing angle of an eight-fold ratio white light sight according to a second embodiment of the present invention;

[0043] Figure 6 It is a cross-sectional view of the eight-fold white light sight according to the second embodiment of the present invention from a second viewing angle;

[0044] Figure 7 is a cross-sectional view of a steering lens assembly according to a second embodiment of the present invention;

[0045] Figure 8 It is a cross-sectional view from a first viewing angle of the adjustment mechanism of the second embodiment of the present invention;

[0046] Fig. 9 A cross-sectional view from a second viewing angle of the adjustment mechanism of the second embodiment of the present invention;

[0047] Fig.10 It is a cross-sectional view of a zoom hand wheel assembly according to a second embodiment of the present invention;

[0048] Fig.11 It is an expanded view of the variable power tube of the second embodiment of the present invention.

[0049] In the figure: 1-objective lens group, 2-first field lens, 3-image transfer lens group, 4-eyepiece group, 5-adjusting screw group, 6-zoom hand wheel group; 101-objective lens cemented lens, 102-objective lens second lens, 201-first field lens, 301-graticule, 302-second field lens, 303-image transfer lens, 304-field lens cemented lens, 401-cemented eyepiece, 402-eyepiece third lens; 305-graticule joint, 306-field lens pressure ring, 307-image transfer lens frame, 308-zoom tube, 3081-first curve zoom groove, 3082-second curve zoom groove, 3083-limiting groove, 309-image transfer lens tube, 310-rear field lens pressure ring, 311-zoom washer, 312-sleeve screw, 313-sleeve; 314-dividing spacer; 501-adjusting handwheel seat, 502-adjusting handle, 503-adjusting screw, 504-handwheel seat pressure ring, 505-friction reduction screw, 506-first sealing ring, 507-locating pin, 508-spring, 509-metal ball; 510-gasket, 511-screw; 601-mirror tube, 602-zoom handwheel, 603-zoom screw, 604-eyepiece tube, 605-ball head pressure ring, 606-elastic washer, 607-front washer, 608-limit screw, 609-second sealing ring, 610-third sealing ring, 611-zoom lever. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0051] Embodiment 1:

[0052] See also Figure 1 The optical system of an eight-fold ratio white light sight comprises an objective lens cemented lens 101 (the effective aperture of the objective lens cemented lens 101 is the aperture stop) coaxially arranged in sequence from the object side to the image side, an objective lens second lens 102, a first field lens 2012, a graticule 301 (a glass graticule 301 with a graticule surface, and graticule lines on the graticule surface), a second field lens 302, a pair of image transfer lenses 303, a field lens cemented lens 304, a cemented eyepiece 401, and an eyepiece third lens 402; wherein the image transfer lens 303 close to the object side is a magnification lens, and the image transfer lenses 303 close to the image side are compensation lenses, and the magnification transfer lens and the compensation lens are symmetrically arranged.

[0053] Further, the objective lens cemented lens 101 comprises a first biconvex lens and a first meniscus lens cemented and connected from the object side to the image side;

[0054] The second lens 102 of the objective lens is a second meniscus lens;

[0055] The first field mirror 2012 is a third meniscus lens;

[0056] The second field lens 302 is a second biconvex lens;

[0057] The zoom lens includes a fourth meniscus lens and a third biconvex lens cemented together from the object side to the image side; the compensation lens includes a fourth biconvex lens and a fifth meniscus lens cemented together from the object side to the image side;

[0058] The field lens cemented lens 304 includes a sixth meniscus lens and a seventh meniscus lens cemented and connected from the object side to the image side;

[0059] The cemented eyepiece 401 includes a first biconcave lens and a fifth biconvex lens cemented and connected from the object side to the image side;

[0060] The third lens 402 of the eyepiece is a sixth biconvex lens.

[0061] Further, the objective lens cemented lens 101 and the objective lens second lens 102 form an objective lens optical group, and the cemented eyepiece 401 and the eyepiece third lens 402 form an eyepiece optical group;

[0062] The objective lens group 1 forms an image of a distant object on the first image plane, and the zoom lens and the compensating lens invert the inverted image of the first image plane and form an image on the second image plane (during the zoom process, the positions of the first image plane and the second image plane remain unchanged); the image of the second image plane passes through the eyepiece optical group and is emitted in parallel, enters the human eye and forms an image on the retina.

[0063] The air gap between the objective lens cemented lens 101 and the objective lens second lens 102 of objective lens group 1 is 8.445 mm;

[0064] The air gap between the objective second lens 102 and the first field lens 2012 is 47.429 mm;

[0065] The air gap between the first field mirror 2012 and the reticle 301 is 7.33 mm;

[0066] The air gap between the reticle 301 and the second field lens 302 is 7 mm;

[0067] The air gap between the field lens cemented lens 304 and the second image plane is 1.839 mm;

[0068] The air gap between the first image plane and the second image plane is 83.138 mm;

[0069] The air gap between the second image plane and the cemented eyepiece 401 is 10.579 mm;

[0070] The air space between the cemented eyepiece 401 and the eyepiece third lens 402 is 12.386 mm.

[0071] Furthermore, the variable air gap range between the second field lens 302 and the variator lens is 0.525-34.145 mm; the variable air gap range between the variator lens and the compensation lens is 2.04-4.167 mm; and the variable air gap range between the compensation lens and the field lens cemented lens 304 is 8.406-44.153 mm.

[0072] Furthermore, the focal length F0 of the objective optical system and the focal length F e Meet F0 / F e ≤1.62.

[0073] The spot diagram of the above optical system can be found in Figure 2 to Figure 4 .

[0074] When the optical system changes magnification from high magnification to low magnification, the zoom lens moves along the optical axis, the system's combined focal length will change, and the image of the zoom lens will move accordingly. In order to maintain the image plane of the system stationary, the compensation lens moves with the zoom lens according to a certain rule, so that the image point of the zoom lens remains in the original position after passing through the compensation lens.

[0075] Embodiment 2:

[0076] See also Figure 5-6 , an eight-fold white light sight provided with an optical system of the eight-fold white light sight described in Example 1, comprising a lens tube 601, wherein an objective lens group 1, an image transfer lens group 303, and an eyepiece group 4 are sequentially arranged in the lens tube 601 from the object side to the image side; a zoom hand wheel group 602 group 6 connected to the image transfer lens group 303 and an adjustment screw group 503 for adjusting the trajectory and windage are arranged outside the lens tube 601; the objective lens group 1 comprises an objective lens cemented lens 101 and an objective lens second lens 102, the image transfer lens group 3 comprises a first field lens 2012, a graticule 301, a second field lens 302, a zoom lens, a compensation lens, and a field lens cemented lens 304, and the eyepiece group 4 comprises a cemented eyepiece 401 and an eyepiece third lens 402.

[0077] Further, see Figure 7 The image transfer lens group 303 includes a grating joint 305 and a field lens pressing ring 306, the grating plate 301 is arranged in the grating joint 305 (three stop screws are evenly distributed on the grating joint 305 for tightening the grating plate 301), the first field lens 2012 is arranged in the field lens pressing ring 306, and a grating spacer ring 314 is arranged between the grating plate 301 and the first field lens 2012 (during the assembly process, the parallax is adjusted by grinding the length of the grating spacer ring 314, which has better impact resistance than the structural form of adjusting the parallax by thread), and the field lens pressing ring 306 is threadedly connected to the outer side of the grating joint 305 and fixes the first field lens 2012 and the grating plate 301 (the field lens pressing ring is threadedly connected to the outer side of the grating joint 305 and fixed by a stop screw);

[0078] The image transfer lens group 303 also includes an image transfer lens tube 309 and a zoom tube 308; the image transfer lens tube 309 is threadedly connected to the inner side of the dividing joint 305 at one end close to the object side and fixes the second field lens 302 in the dividing joint 305; the image transfer lens tube 601 is a ball head structure at one end close to the image side, and the field lens cemented lens 304 is fixed in the ball head structure by a rear field lens pressing ring 310; the zoom tube 308 is sleeved on the outside of the image transfer lens tube 309, and both ends of the image transfer lens tube 309 extend out of the zoom tube 308, the outer diameter of the ball head structure is larger than the outer diameter of the zoom tube 308, and a zoom gasket 311 sleeved on the outside of the image transfer lens tube 309 is provided between the ball head and the zoom tube 308;

[0079] See also Fig.11A straight groove is arranged on the side wall of the image transfer lens tube 309; a first curved magnification change groove 3081 and a second curved magnification change groove 3082 are arranged on the side wall of the magnification change tube 308, the magnification change lens and the compensation lens are both fixed by the image transfer lens frame 307 in the image transfer lens tube 309 (three stop screws are evenly distributed on the image transfer lens frame 307 for fixing the magnification change lens and the compensation lens), a sliding sleeve screw 312 is fixed on the side wall of the steering lens frame, a sliding sleeve 313 is sleeved on the outer end of the sliding sleeve screw 312, the sliding sleeve 313 connected to the steering lens frame for fixing the magnification change lens passes through the straight groove of the image transfer lens tube 309 and is arranged in the first curved magnification change groove 3081, and the sliding sleeve 313 connected to the steering lens frame for fixing the compensation lens passes through the straight groove of the image transfer lens tube 309 and is arranged in the second curved magnification change groove 3082.

[0080] Further, see Fig.10 The ball head structure of the steering lens tube 601 is fixed to the lens tube 601 through the front washer 607, the elastic washer 606 and the ball head pressure ring 605. A slot is provided on the side wall of the ball head structure of the steering lens tube 601. An inner end of a limit screw 608 is located in the slot, and the outer end of the limit screw 608 is fixed to the lens tube 601 (the limit screw 608 cooperates with the slot to prevent the steering lens tube 601 from rotating);

[0081] The zoom hand wheel 602 group 6 includes a zoom hand wheel 602 and a zoom screw 603. The outer side of the end of the lens tube 601 close to the image side is sleeved with the zoom hand wheel 602. One end of the zoom hand wheel 602 contacts the lens tube 601, and the other end contacts the eyepiece barrel 604. The eyepiece barrel 604 is a part of the eyepiece group 4 that is fixed to the end of the lens tube 601 close to the image side, and the contact surfaces of the zoom hand wheel 602, the lens tube 601 and the eyepiece barrel 604 are respectively provided with a third sealing ring 610 and a second sealing ring 609; the inner side of the zoom screw 603 is a light rod portion, and the outer side is a threaded portion. The light rod portion of the zoom screw 603 passes through the zoom opening groove (the opening is 240°, determined by the zoom curve of the optical system) and is located in the limit groove 3083. The zoom opening groove is provided on the side wall of the lens tube 601, and the limit groove 3083 is provided on the side wall of the zoom tube 308.

[0082] During the zoom operation, the zoom tube 308 is driven by rotating the zoom hand wheel 602, which drives a pair of sliding screws 312 to move in the first curved zoom groove 3081 and the second curved zoom groove 3082 respectively, thereby driving the zoom lens and the compensation lens to move horizontally along the optical axis in the image transfer lens tube 309.

[0083] Furthermore, a zoom lever 611 is threadedly connected to the outer side of the zoom hand wheel 602 to facilitate adjustment of the zoom hand wheel 602 .

[0084] Furthermore, participate Figure 8-Figure 9, the adjusting screw 503 group 5 includes a pair of vertically arranged adjusting structures; the adjusting structure includes an adjusting hand wheel seat 501 fixed to the mirror tube 601, an adjusting handle 502 is arranged above the adjusting hand wheel seat 501 (a straight-line spanner slot is provided on the top of the adjusting handle 502, and a coin or other bar-shaped hard object can be inserted into the spanner slot to rotate the adjusting handle 502), and an adjusting screw 503 is arranged below the adjusting hand wheel seat 501; the adjusting handle 502 rotates and slides in the slot hole at the top of the adjusting hand wheel seat 501 (the bottom of the adjusting handle 502 is aligned with the top of the adjusting hand wheel seat 501) A first sealing ring 506 is provided between the parts), and a handwheel seat pressure ring 504 for axially limiting the adjusting handle 502 is connected to the upper part of the adjusting handwheel seat 501, and the bottom of the adjusting handle 502 is a flat rod; the top of the adjusting screw 503 is provided with a flat socket matched with the adjusting handle 502, and the bottom of the adjusting screw 503 is fixed with a wear-reducing screw 505 (the wear-reducing screw 505 and the adjusting screw 503 are interference fit and fixed by glue), and the bottom of the wear-reducing screw 505 is in contact with the outer side of the dividing joint 305 (the position of installing the dividing plate 301).

[0085] Furthermore, an outer side cover of the adjusting hand wheel seat 501 and the adjusting handle 502 is provided with an adjusting hand wheel cover.

[0086] Furthermore, the inner wall of the slot of the adjusting handwheel seat 501 for placing the adjusting handle 502 is evenly distributed with a tooth structure in the circumferential direction, a pair of blind holes is arranged in the outer side of the adjusting handle 502, a positioning pin 507 is arranged in the blind hole, a positioning hole is arranged at the outer end of the positioning pin 507, a metal ball 509 (steel ball) is arranged in the positioning hole, a positioning column is arranged at the inner end of the positioning pin 507, a spring 508 is sleeved on the positioning column, and the other end of the spring 508 is in contact with the bottom of the blind hole.

[0087] Furthermore, a screw 511 is threadedly connected to the bottom of the adjusting handle 502, and the screw 511 passes through a gasket 510 and is fixed to the bottom of the adjusting handle 502; the diameter of the gasket 510 is larger than the width of the slotted socket of the adjusting screw 503, so that the adjusting screw 503 will not fall out downward during the assembly process of the adjusting mechanism, reducing the difficulty of assembly.

[0088] The working principle of the adjustment mechanism is as follows: when in use, insert a coin (or other object) into the wrench slot at the top of the adjustment handle 502 and rotate it. When the adjustment handle 502 rotates, the metal ball 509 in its blind hole generates elastic force outwards under the elastic force of the spring 508, so that the toothed structure on the inner wall of the adjustment hand wheel seat 501 produces a sense of segmentation and a clicking sound; the straight-line plug at the bottom of the adjustment handle 502 cooperates with the straight-line socket at the top of the adjustment screw 503, so that the adjustment screw 503 rotates together with the adjustment handle 502, and then the adjustment screw 503 performs axial movement in the adjustment hand wheel seat 501, and adjusts the orientation of the two vertical directions of the reticle 301 through the contact between the wear-reducing screw 505 and the reticle joint 305. When no adjustment is needed, cover the adjustment hand wheel cover to improve the waterproof and dustproof capabilities.

[0089] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An optical system of an eight-fold white light sight, characterized in that: It includes an objective lens cemented lens, an objective lens second lens, a first field lens, a graticule, a second field lens, a pair of image transfer lenses, a field lens cemented lens, a cemented eyepiece, and an eyepiece third lens, which are coaxially arranged in sequence from the object side to the image side; the image transfer lens close to the object side is a magnification lens, and the image transfer lenses close to the image side are compensation lenses, and the magnification lens and the compensation lens are symmetrically arranged.

2. The optical system of the eight-fold white light sight according to claim 1, characterized in that: The objective lens cemented lens comprises a first biconvex lens and a first meniscus lens cemented and connected from the object side to the image side; The second lens of the objective lens is a second meniscus lens; The first field mirror is the third meniscus lens; The second field mirror is a second double convex lens; The zoom lens includes a fourth meniscus lens and a third biconvex lens cemented together from the object side to the image side; the compensation lens includes a fourth biconvex lens and a fifth meniscus lens cemented together from the object side to the image side; The field lens cemented lens comprises a sixth meniscus lens and a seventh meniscus lens cemented and connected from the object side to the image side; The cemented eyepiece includes a first biconcave lens and a fifth biconvex lens cemented and connected from the object side to the image side; The third lens of the eyepiece is a sixth double convex lens.

3. The optical system of the eight-fold ratio white light sight according to claim 2, characterized in that: The objective lens cemented lens and the second lens of the objective lens constitute an objective lens optical group, and the cemented eyepiece and the third lens of the eyepiece constitute an eyepiece optical group; The objective lens group forms an image of a distant object on a first image plane, and the zoom lens and the compensating lens invert the inverted image of the first image plane and form an image on a second image plane; The air gap between the objective lens and the second lens of the objective lens group is 8 to 9 mm; The air gap between the second lens of the objective lens and the first field lens is 47-48 mm; The air gap between the first field mirror and the reticle is 7 to 8 mm; The air gap between the reticle and the second field lens is 6 to 8 mm; The air gap between the field lens cemented lens and the second image plane is 1 to 2 mm; The air gap between the first image plane and the second image plane is 83-84 mm; The air gap between the second image plane and the cemented eyepiece is 10-11 mm; The air gap between the glued eyepiece and the third lens of the eyepiece is 12 to 13 mm.

4. The optical system of the eight-fold ratio white light sight according to claim 2, characterized in that: The variable air interval range between the second field lens and the zoom lens is 0.5-35mm; the variable air interval range between the zoom lens and the compensation lens is 2-5mm; the variable air interval range between the compensation lens and the field lens cemented lens is 8-45mm.

5. The optical system of the eight-fold ratio white light sight according to claim 3, characterized in that: The focal length F0 of the objective optical group and the focal length F of the eyepiece optical group e Meet F0 / F e ≤1.

62.

6. An eight-fold ratio white light sight provided with an optical system of the eight-fold ratio white light sight according to any one of claims 1 to 8, characterized in that: The invention comprises a lens tube, in which an objective lens group, an image transfer lens group and an eyepiece group are arranged in sequence from the object side to the image side; a variable power hand wheel group connected to the image transfer lens group in transmission and an adjusting screw group for adjusting the trajectory and windage are arranged outside the lens tube; the objective lens group comprises an objective lens cemented lens and an objective lens second lens, the image transfer lens group comprises a first field lens, a graticule, a second field lens, a variable power lens, a compensation lens and a field lens cemented lens, and the eyepiece group comprises a cemented eyepiece and an eyepiece third lens.

7. The eight-fold ratio white light sight according to claim 6, characterized in that: The image transfer lens assembly comprises a graticule joint and a field lens pressing ring, the graticule plate is arranged in the graticule joint, the first field lens is arranged in the field lens pressing ring, a graticule spacer is arranged between the graticule plate and the first field lens, and the field lens pressing ring is threadedly connected to the outer side of the graticule joint and fixes the first field lens and the graticule plate; The image-transmitting lens assembly further comprises an image-transmitting lens tube and a zoom tube; the end of the image-transmitting lens tube close to the object side is threadedly connected to the inner side of the dividing joint and fixes the second field lens in the dividing joint; the end of the image-transmitting lens tube close to the image side is a ball head structure, and the field lens cemented lens is fixed in the ball head structure by a rear field lens pressure ring; the zoom tube is sleeved on the outside of the image-transmitting lens tube, and both ends of the image-transmitting lens tube extend from the zoom tube, the outer diameter of the ball head structure is larger than the outer diameter of the zoom tube, and a zoom gasket sleeved on the outside of the image-transmitting lens tube is provided between the ball head and the zoom tube; A straight groove is arranged on the side wall of the image transfer lens tube; a first curved magnification change groove and a second curved magnification change groove are arranged on the side wall of the magnification change tube; the magnification change lens and the compensation lens are both fixed by the image transfer lens frame in the image transfer lens tube; a sliding sleeve screw is fixed on the side wall of the steering lens frame; a sliding sleeve is arranged on the outer end of the sliding sleeve screw; a sliding sleeve connected to the steering lens frame for fixing the magnification change lens passes through the straight groove of the image transfer lens tube and is arranged in the first curved magnification change groove; a sliding sleeve connected to the steering lens frame for fixing the compensation lens passes through the straight groove of the image transfer lens tube and is arranged in the second curved magnification change groove.

8. The eight-fold ratio white light sight according to claim 7, characterized in that: The ball head structure of the steering lens tube is fixed in the lens tube through a front washer, an elastic washer and a ball head pressure ring. A slot is provided on the side wall of the ball head structure of the steering lens tube. An inner end of a limit screw is located in the slot, and an outer end of the limit screw is fixed to the lens tube. The magnification handwheel group includes a magnification handwheel and a magnification screw. The outer side of the end of the lens tube close to the image side is sleeved with a magnification handwheel. One end of the magnification handwheel contacts the lens tube, and the other end contacts the eyepiece barrel. The eyepiece barrel is a part of the eyepiece group that is fixed to the end of the lens tube close to the image side, and a third sealing ring and a second sealing ring are respectively provided at the contact surface positions of the magnification handwheel, the lens tube and the eyepiece barrel; the inner side of the magnification screw is a smooth rod portion, and the outer side is a threaded portion. The smooth rod portion of the magnification screw passes through the magnification opening groove and is located in the limit groove. The magnification opening groove is arranged on the side wall of the lens tube, and the limit groove is arranged on the side wall of the magnification tube.

9. The eight-fold ratio white light sight according to claim 6, characterized in that: The adjusting screw group includes a pair of vertically arranged adjusting structures; the adjusting structure includes an adjusting handwheel seat fixed to the mirror tube, an adjusting handle is arranged above the adjusting handwheel seat, and an adjusting screw is arranged below the adjusting handwheel seat; the adjusting handle rotates and slides in the slot hole at the top of the adjusting handwheel seat, and a handwheel seat pressure ring for axially limiting the adjusting handle is connected to the upper part of the adjusting handwheel seat, and the bottom of the adjusting handle is a straight-shaped plug rod; the top of the adjusting screw is provided with a straight-shaped socket matching the adjusting handle, and a wear-reducing screw is fixed to the bottom of the adjusting screw.

10. The eight-fold ratio white light sight according to claim 9, characterized in that: The inner wall of the slot hole of the adjusting handwheel seat for placing the adjusting handle is evenly distributed with a tooth structure in the circumferential direction, a pair of blind holes is arranged in the outer side of the adjusting handle, a locating pin is arranged in the blind hole, a locating hole is arranged at the outer end of the locating pin, a metal ball is arranged in the locating hole, a locating column is arranged at the inner end of the locating pin, a spring is sleeved on the locating column, and the other end of the spring is in contact with the bottom of the blind hole.

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