10-fold-ratio white light sighting telescope and optical system thereof

Abstract

The invention discloses a 10-time-ratio white light sighting telescope and an optical system thereof. The optical system comprises a first diaphragm, an objective lens optical system, a reticle, a relay lens optical system and an eyepiece optical system which are sequentially arranged from the object space to the image space. The objective lens optical system comprises an objective lens first biconvex lens, an objective lens cemented lens and an objective lens meniscus lens, the image rotation lens optical system comprises a first cemented lens capable of axially moving for zooming and a second cemented lens for compensation, the reticle is arranged on an objective lens image focal plane, the objective lens object focal plane is a second image plane, and the positions of the two image planes are not changed during zooming. According to the system, stray light can be reduced, aberration is eliminated, additional focusing is not needed, and the imaging definition and the aiming accuracy are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical sighting telescope, in particular to a 10 times ratio white light sighting telescope and an optical system thereof. BACKGROUND

[0002] At present, in order to improve the shooting accuracy of guns, optical sighting telescopes are generally used. The large variable ratio white light sighting telescope is widely used. When the small magnification and large field of view is used, the target can be searched. When the large magnification and small field of view is used, the target is enlarged and observed. Therefore, there is a large demand for the large variable ratio sighting telescope in the market. However, the current large variable ratio white light sighting telescope has problems such as poor image quality, complex structure and low stability, and is difficult to withstand the impact force brought by the gun. At the same time, most white light sighting telescopes have insufficient man-machine function design, which brings many inconveniences to the users. SUMMARY

[0003] The purpose of the present application is to provide a 10 times ratio white light sighting telescope and an optical system thereof, so as to improve the use experience of the white light sighting telescope.

[0004] In order to solve the above technical problems, the present application provides an optical system of a 10 times ratio white light sighting telescope, which comprises a first diaphragm, an objective optical system, a reticle, an image conversion lens optical system and an eyepiece optical system arranged in sequence from the object side to the image side. The objective optical system comprises an objective first double convex lens, an objective cemented lens and an objective meniscus lens arranged in sequence from the object side to the image side; the objective cemented lens is formed by cementing an objective second double convex lens and an objective double concave lens in sequence from the object side to the image side; the first diaphragm coincides with the object side of the objective first double convex lens; The image conversion lens optical system comprises a front field mirror meniscus lens, an image conversion lens first cemented lens, an image conversion lens second cemented lens and a rear field mirror cemented lens arranged in sequence from the object side to the image side; the image conversion lens first cemented lens can move axially for zooming, and the image conversion lens second cemented lens can move axially for compensation; the image conversion lens first cemented lens is formed by cementing an image conversion lens second meniscus lens and an image conversion lens first double convex lens in sequence from the object side to the image side, the image conversion lens second cemented lens is formed by cementing an image conversion lens third meniscus lens and an image conversion lens second double convex lens in sequence from the object side to the image side, and the rear field mirror cemented lens is formed by cementing an image conversion lens double concave lens and an image conversion lens fourth meniscus lens in sequence from the object side to the image side; The eyepiece optical system comprises an eyepiece cemented lens and an eyepiece double convex lens arranged in sequence from the object side to the image side; the eyepiece cemented lens is formed by cementing an eyepiece double concave lens and an eyepiece first double convex lens in sequence from the object side to the image side; The image side focal plane of the objective optical system is a first image plane, the first image plane is located between the objective optical system and the image conversion lens optical system, and the reticle is arranged at the first image plane; The object side focal plane of the eyepiece optical system is a second image plane, and the second image plane is located between the image converter lens optical system and the eyepiece optical system; and the positions of the first image plane and the second image plane remain unchanged during the zooming process.

[0005] According to the above scheme, the optical system satisfies ; is the focal length of the objective lens optical system, is the focal length of the eyepiece optical system.

[0006] According to the above scheme, the air gap between the first biconvex lens of the objective lens and the objective lens cemented lens is in the range of 10.524-15.286 mm; The air gap between the objective lens cemented lens and the objective lens meniscus lens is in the range of 30.110-35.862 mm; The air gap between the objective lens meniscus lens and the reticle is in the range of 8.241-13.389 mm; The air gap between the reticle and the front field lens meniscus lens is in the range of 10.200-14.526 mm; The air gap between the rear field lens cemented lens and the second image plane is in the range of 14.226-20.459 mm; The air gap between the second image plane and the eyepiece cemented lens is in the range of 24.338-26.118 mm; The air gap between the eyepiece cemented lens and the eyepiece biconvex lens is in the range of 0.399-0.554 mm.

[0007] According to the above scheme, the variable air gap between the front field lens meniscus lens and the image converter lens first cemented lens is 3-60.784 mm; The variable air gap between the image converter lens first cemented lens and the image converter lens second cemented lens is 0.5-30.9 mm; The variable air gap between the image converter lens second cemented lens and the rear field lens cemented lens is 59.305-4.5 mm.

[0008] According to the above scheme, the optical system comprises a lens barrel, a zooming handle group, and an objective lens group, a reticle group, an image converter lens group, and an eyepiece group arranged in sequence from the object side to the image side; The objective lens group comprises a first diaphragm and an objective lens optical system, the reticle group comprises a reticle, the image converter lens group comprises an image converter lens optical system, and the eyepiece group comprises an eyepiece optical system; The objective lens group, the reticle group, and the image converter lens group are arranged in the lens barrel, the eyepiece group is connected to the end of the lens barrel, the zooming handle group is connected to the outer circumferential side of the lens barrel, and the zooming handle group is in transmission connection with the image converter lens first cemented lens and the image converter lens second cemented lens.

[0009] According to the scheme, the division group comprises a division plate frame, the division plate frame is connected with one end of the image converter lens group, the division plate is arranged in the division plate frame, and the division plate frame is circumferentially provided with a light emitter for illuminating the division plate.

[0010] According to the scheme, the illumination brightness of the light emitter can be adjusted; the mirror tube is provided with a switch illumination group, the switch illumination group comprises a power supply mechanism and a gear shifting mechanism, the power supply mechanism comprises a battery, the battery is electrically connected with the gear shifting mechanism, and the gear shifting mechanism is operated to form a loop with the battery and the light emitter and different resistance values or disconnect the loop with the light emitter.

[0011] According to the scheme, the image converter lens group comprises an image converter lens tube, a zoom tube, the image converter lens tube is arranged in the zoom tube; a front field mirror meniscus lens is fixed in the image converter lens tube, a first cemented lens of the image converter lens and a second cemented lens of the image converter lens are respectively fixed in a zoom lens frame and a compensation lens frame, the zoom lens frame and the compensation lens frame are slidingly connected with the image converter lens and are drivingly connected with the zoom tube, the zoom tube is drivingly connected with a zoom hand wheel group; a rear field mirror cemented lens is fixed in a rear field mirror frame, the rear field mirror frame is connected with an image side end of the image converter lens tube, and an image side end of the rear field mirror frame is connected with a second diaphragm.

[0012] According to the scheme, an image converter ball head is arranged outside the image converter lens tube, a stepped surface with an increased outer diameter is arranged at a material side end of the image converter lens tube, and the zoom tube is located between the image converter ball head and the stepped surface; the mirror body is provided with an adjusting screw group, the adjusting screw group comprises a pair of vertically arranged adjusting screw mechanisms, and the adjusting screw mechanisms are drivingly connected with the image converter lens group.

[0013] According to the scheme, the zoom hand wheel group comprises a zoom hand wheel and a zoom screw; the zoom hand wheel is located outside the mirror tube and the eyepiece group; a zoom opening slot with a certain angle is arranged on the mirror tube, the zoom tube is provided with a slot, an outside end of the zoom screw is connected with the zoom hand wheel, and an inside end of the zoom screw is located in the slot of the zoom tube after passing through the zoom opening slot; A zoom hand wheel limiting screw is arranged inside the zoom hand wheel, the zoom hand wheel limiting screw is fixed to the mirror tube, a special-shaped limiting slot is arranged on an inner wall of the zoom hand wheel, and an outside head of the zoom hand wheel limiting screw is located in the special-shaped limiting slot.

[0014] Advantageous effects The optical system disclosed by the application realizes key performance improvement through core structure design; wherein, the first diaphragm is coincident with the first biconvex lens of the objective lens in the material side, can accurately control light in the initial stage of the light beam entering the objective lens, reduces stray light interference, and significantly improves imaging contrast; the division plate is arranged in the image side focal plane (first image plane) of the objective lens, the division plate and the target image are always relatively stable and the imaging is clear during zooming, precise aiming is realized; during zoom adjustment, the first cemented lens of the image converter lens moves axially for zooming, the second cemented lens moves axially for compensation, so as to realize 1-10 times zooming, and the positions of the first and second image planes are unchanged during zooming. Attached Figure Description

[0015] Figure 1 This is an optical system diagram of the optical system of a 10x white light sight according to an embodiment of the present invention at 1x magnification; Figure 2 This is a dot plot of the optical system of a 10x white light sight according to an embodiment of the present invention at 1x magnification; Figure 3 This is a field curvature distortion diagram of the optical system of a 10x white light sight according to an embodiment of the present invention at 1x magnification; Figure 4 This is a chromatic aberration diagram of the optical system of a 10x white light sight according to an embodiment of the present invention at 1x magnification. Figure 5 This is an optical system diagram of the optical system of a 10x white light sight according to an embodiment of the present invention at 10x magnification; Figure 6 This is a dot plot of the optical system of a 10x white light sight according to an embodiment of the present invention at 10x magnification; Figure 7 This is a field curvature distortion diagram of the optical system of a 10x white light sight according to an embodiment of the present invention at 10x magnification; Figure 8 This is a chromatic aberration diagram of the optical system of a 10x white light sight according to an embodiment of the present invention at 10x magnification. Figure 9 This is a first-view cross-sectional view of a 10x white light sight according to an embodiment of the present invention; Figure 10 This is a second-view cross-sectional view of a 10x white light sight according to an embodiment of the present invention; Figure 11 This is a cross-sectional view of an image-rotating lens group according to an embodiment of the present invention; Figure 12 This is a cross-sectional view of the eyepiece assembly according to an embodiment of the present invention; Figure 13 This is an exploded view of a switch lighting assembly according to an embodiment of the present invention; Figure 14 This is a cross-sectional view of a switch lighting assembly according to an embodiment of the present invention; Figure 15 This is a cross-sectional view of a variable magnification handwheel assembly according to an embodiment of the present invention; Figure 16 This is a schematic diagram of a variable magnification tube according to an embodiment of the present invention; Figure 17 This is a schematic diagram of the irregularly shaped limiting groove of the variable magnification handwheel according to an embodiment of the present invention. Figure 1 ; Figure 18 This is a schematic diagram of the irregularly shaped limiting groove of the variable magnification handwheel according to an embodiment of the present invention. Figure 2 .

[0016] In the figure: 1, objective lens group; 2, relay lens group; 3, eyepiece lens group; 4, adjusting screw group; 5, switch illumination group; 6, variable magnification hand wheel group; 101, objective lens first double convex lens; 102, objective lens cemented lens; 103, objective lens meniscus lens; 201, reticle; 202, front field lens meniscus lens; 203, relay lens first cemented lens; 204, relay lens second cemented lens; 205, rear field lens cemented lens; 206, variable magnification tube; 207, relay lens tube; 208, relay lens ball head; 209, reticle frame; 210, gasket; 211, first elastic gasket; 212, rear field lens frame; 213, second diaphragm; 214, sliding sleeve screw; 215, sliding sleeve; 216, reticle frame set screw; 217, second diaphragm set screw; 218, light emitting diode; 301, eyepiece lens cemented lens; 302, eyepiece lens double convex lens; 303, eyepiece lens tube; 304, variable magnification second sealing ring; 305, eyepiece lens frame; 501, lens tube; 502, switch handle; 503, switch seat; 504, battery cover; 505, switch positioning ring; 506, connecting seat; 507, brush plate; 508, wiring board; 509, wiring board pressing ring; 510, battery; 511, sealing gasket; 512, countersunk screw; 513, connecting screw; 514, spring; 515, steel ball; 516, switch positioning ring sealing ring; 517, connecting seat sealing ring; 518, switch handle sealing ring; 519, switch seat sealing ring; 520, battery cover sealing ring; 601, variable magnification hand wheel; 602, ball head pressing ring; 603, second elastic gasket; 604, ball head gasket; 605, variable magnification screw; 606, relay lens ball head limiting screw; 607, variable magnification hand wheel limiting screw; 608, eyepiece lens tube set screw; 609, variable magnification first sealing ring. DETAILED DESCRIPTION

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort belong to the scope of protection of the present disclosure.

[0018] The embodiment discloses an optical system of a 10 times ratio white light sighting telescope, comprising a first diaphragm, an objective lens optical system, a (glass) reticle 201, a relay lens optical system, and an eyepiece lens optical system arranged in sequence from the object side to the image side; The objective optical system comprises, in order from the object side to the image side, an objective first double convex lens 101, an objective cemented lens 102, and an objective meniscus lens 103; the objective cemented lens is formed by cementing an objective second double convex lens and an objective double concave lens in order from the object side to the image side; a first diaphragm coincides with the object side of the objective first double convex lens 101; The relay lens optical system comprises, in order from the object side to the image side, a front field lens meniscus lens 202 (as a front field lens), a relay lens first cemented lens 203, a relay lens second cemented lens 204, and a rear field lens cemented lens 205 (as a rear field lens); the relay lens first cemented lens 203 can move axially to zoom, and the relay lens second cemented lens 204 can move axially to compensate; the relay lens first cemented lens 203 is formed by cementing a relay lens second meniscus lens and a relay lens first double convex lens in order from the object side to the image side, the relay lens second cemented lens 204 is formed by cementing a relay lens third meniscus lens and a relay lens second double convex lens in order from the object side to the image side, and the rear field lens cemented lens 205 is formed by cementing a relay lens double concave lens and a relay lens fourth meniscus lens in order from the object side to the image side; The eyepiece optical system comprises, in order from the object side to the image side, an eyepiece cemented lens 301 and an eyepiece double convex lens 302; the eyepiece cemented lens 301 is formed by cementing an eyepiece double concave lens and an eyepiece first double convex lens in order from the object side to the image side; The image side focal plane of the objective optical system is a first image plane, and the first image plane is located between the objective optical system and the relay lens optical system; a reticle 201 is arranged at the first image plane; The object side focal plane of the eyepiece optical system is a second image plane, and the second image plane is located between the relay lens optical system and the eyepiece optical system; the positions of the first image plane and the second image plane remain unchanged during zooming.

[0019] Further, the optical system satisfies ; is the focal length of the objective optical system, is the focal length of the eyepiece optical system.

[0020] Further, the air gap between the objective first double convex lens 101 and the objective cemented lens 102 ranges from 10.524 mm to 15.286 mm; The air gap between the objective cemented lens 102 and the objective meniscus lens 103 ranges from 30.110 mm to 35.862 mm; The air gap between the objective meniscus lens 103 and the reticle 201 ranges from 8.241 mm to 13.389 mm; The air gap between the reticle 201 and the front field lens meniscus lens 202 ranges from 10.200 mm to 14.526 mm; The air gap between the rear field mirror cemented mirror 205 and the second image surface ranges from 14.226 mm to 20.459 mm; The air gap between the second image surface and the eyepiece cemented mirror 301 ranges from 24.338 mm to 26.118 mm; The air gap between the eyepiece cemented mirror 301 and the eyepiece lenticular lens 302 ranges from 0.399 mm to 0.554 mm.

[0021] Further, the variable air gap between the front field mirror meniscus lens 202 and the first image lens 203 ranges from 3 mm to 60.784 mm; The variable air gap between the first image lens 203 and the second image lens 204 ranges from 0.5 mm to 30.9 mm; The variable air gap between the second image lens 204 and the rear field mirror cemented mirror 205 ranges from 59.305 mm to 4.5 mm.

[0022] In the embodiment, the objective optical system adopts ultra-low dispersion glass to optimize chromatic aberration of the system; the first image lens 203 (i.e., the zoom lens group) and the second image lens 204 (i.e., the compensation lens group) are both negative lens-positive lens cemented structures, and the negative lens material is selected as high refractive flint material to optimize chromatic aberration of the system.

[0023] The embodiment provides a parameter of an optical system of a 10x white light sighting scope as shown in the following table:

[0024] The variable air gap data are shown in the following table:

[0025] The embodiment further provides a 10x white light sighting scope, which comprises a mirror tube 501, a zoom hand wheel group 6, and an objective lens group 1, a reticle group, an image lens group 2, and an eyepiece group 3 arranged in sequence from the object side to the image side; the objective lens group 1 comprises a first diaphragm and an objective optical system, the reticle group comprises a reticle 201, the image lens group 2 comprises an image optical system, and the eyepiece group 3 comprises an eyepiece optical system. The objective lens group 1, the reticle group, and the image lens group 2 are arranged in the mirror tube 501, the eyepiece group 3 is connected to the end of the mirror tube 501, the zoom hand wheel group 6 is connected to the outer circumferential side of the mirror tube 501, and the zoom hand wheel group 6 is in transmission connection with the first image lens 203 and the second image lens 204.

[0026] Further, the reticle group comprises a reticle frame 209, the reticle frame 209 is connected to one end of the image lens group 2, the reticle 201 is arranged in the reticle frame 209, and the reticle frame 209 is circumferentially provided with a light emitter for illuminating the reticle 201.

[0027] Specifically, the reticle frame 209 is screwed with the turning lens tube 207 of the turning lens group, when installing the reticle group, first rotate the reticle frame 209 to adjust the axial position of the reticle 201, after determining the axial position of the reticle 201, fasten the reticle frame 209 with the reticle frame fastening screw 216, and then adjust the rotation direction of the reticle 201.

[0028] In the embodiment, the light emitter is a light emitting diode 218, and the reticle frame 209 is circumferentially provided with eight evenly distributed waist-shaped grooves, and the light emitting diode 218 is arranged in the waist-shaped groove of the reticle frame 209.

[0029] Further, the illumination brightness of different light emitters is different; the mirror tube 501 is provided with a switch illumination group 5, the switch illumination group 5 includes a power supply mechanism and a gear shifting mechanism, the power supply mechanism includes a battery 510, the battery 510 is electrically connected with the gear shifting mechanism, and the gear shifting mechanism is operated to form a loop or break the loop of the battery 510, the light emitter and the resistor with different resistance values.

[0030] Specifically, the gear shifting mechanism includes a plurality of power-on gears and at least one power-off gear, when being adjusted and switched to the power-on gear, the battery 510 and the light emitter form a power-on loop, thereby illuminating the reticle 201, and the illumination brightness can be changed by switching different power-on gears; when being adjusted and switched to the power-off gear, the light emitter is extinguished.

[0031] In this embodiment, the switch lighting group 5 is provided with 16 positions, 8 brightness positions and 8 power-off positions are equally arranged, and the rotating switch handle 502 can adjust the position. The switch positioning ring 505 and the connecting seat 506 are fixed on the mirror body by two countersunk screws 512. The switch positioning ring 505 has 16 evenly distributed holes inside, and the end surface of the switch handle 502 has four evenly distributed cylindrical bosses. When the handle is pressed to the right, the bosses are locked in the holes and cannot be rotated, that is, the locked state. Pulling out the switch handle 502 to the left can unlock it, so that the handle can be normally rotated. The switch handle 502 has two V-shaped sealing ring grooves inside, which can keep sealed when the handle moves left and right, and can also prevent sliding. The spring 514 and the steel ball 515 are installed in the two symmetrical circular holes of the connecting seat 506. The switch seat 503 is made of brass and has good wear resistance, and is provided with 16 evenly distributed spherical holes. When rotated to the set position, the steel ball is pressed into the spherical hole to realize the position adjustment feeling. The brush plate 507 is fixed on the connecting seat 506 by four connecting screws 513. The wiring board 508 is fixed on the switch seat 503 by the wiring board 508 pressing ring, and the negative plate (connected to the negative electrode of the power supply) and the battery 510 clip (connected to the positive electrode of the power supply) are welded on the wiring board 508. Different resistance values are welded on the back of the wiring board 508. Two brushes on the brush plate 507 are electrically connected to the wiring board 508 for position adjustment when the switch handle 502 is rotated. The wires welded on the brush plate 507 pass through the sealing gasket 511 into the mirror body and are connected to the light-emitting diode. All parts of the switch lighting group that communicate with the outside are provided with sealing elements (such as the switch positioning ring sealing ring 516, the connecting seat sealing ring 517, the switch handle sealing ring 518, the switch seat sealing ring 519, and the battery cover sealing ring 520 shown in the figure). The switch lighting group of the present application can realize the functions of position adjustment and position locking, and can be rotated to different brightness positions to meet the different needs of the user at different times; the switch handle 502 is engraved with position marks, which is convenient for recording the position of the brightness; a wrench groove is designed on the battery cover 504. A wrench can be used to assist in opening the battery cover 504 to replace the battery 510.

[0032] Further, the relay lens group 2 includes a relay lens tube 207, a zoom tube 206, the relay lens tube 207 is arranged in the zoom tube 206; a front field mirror meniscus lens 202 is fixed in the relay lens tube 207, a relay lens first cemented lens 203 and a relay lens second cemented lens 204 are respectively fixed in a zoom lens frame and a compensation lens frame, the zoom lens frame and the compensation lens frame are in sliding connection with the relay lens, and are in transmission connection with the zoom tube 206, the zoom tube 206 is in transmission connection with the zoom hand wheel group 6; a rear field mirror cemented lens 205 is fixed in a rear field mirror frame 212, the rear field mirror frame 212 is connected to an image side end of the relay lens tube 207, and an image side end of the rear field mirror frame 212 is connected with a second diaphragm 213 (in this embodiment, the second diaphragm 213 is fastened by a second diaphragm fastening screw 217).

[0033] Specifically, the side wall of the image converter lens tube 207 is provided with a one-groove, and the side wall of the zoom tube 206 is provided with a zoom curve groove corresponding to the zoom lens frame and the compensation lens frame; the side surface of the zoom lens frame and the compensation lens frame is connected with a sliding sleeve screw 214, and the sliding sleeve screw 214 is sleeved with a sliding sleeve 215, which is located in the one-groove of the image converter lens tube 207 and the zoom curve groove of the zoom tube 206. When the zoom handwheel set 6 drives the zoom tube 206 to rotate, the zoom curve groove on the zoom tube 206 drives the sliding sleeve screw 214 to move, and since the sliding sleeve screw 214 is also limited by the one-groove of the image converter lens tube 207, the sliding sleeve screw 214 drives the zoom lens frame and the compensation lens frame to move axially, thereby realizing zooming and compensation.

[0034] Further, the image converter lens tube 207 is provided with an image converter ball head 208 outside, and the image converter lens tube 501 is provided with a stepped surface with an increased outer diameter at the object side end, and the zoom tube 206 is located between the image converter ball head 208 and the stepped surface; the lens body is provided with an adjusting screw set 4, which includes a pair of vertically arranged adjusting screw mechanisms, and the adjusting screw mechanisms are in transmission connection with the reticle frame 209.

[0035] Specifically, a gasket 210 is arranged between one end of the zoom tube 206 and the stepped surface of the image converter lens tube 501, and a first elastic gasket 211 is arranged between the other end of the zoom tube 206 and the image converter ball head 208. The image converter ball head 208 and the stepped surface of the image converter lens tube 207 axially limit the zoom tube 206, so that the zoom tube 206 can only rotate. The side surface of the image converter ball head 208 is provided with a one-groove (the direction of the one-groove is parallel to the optical axis direction), and an image converter ball head limiting screw 606 is connected with the lens tube 501 at one end and located in the one-groove of the image converter ball head 208 at the other end, thereby limiting the image converter ball head 208 from rotating around the optical axis. A ball head gasket 604 is arranged between the image converter ball head 208 and the steering tube, and a ball head pressing ring 602 is connected with the end of the zoom tube 206, and a second elastic gasket 603 is arranged between the ball head pressing ring 602 and the image converter ball head 208. When the ball head pressing ring 602 is pressed, the ball head gasket 604 and the second elastic gasket 603 press the image converter ball head 208, so that the image converter ball head 208 can rotate in the limited direction. By operating the adjusting screw mechanism, the vertical and horizontal positions of the reticle frame 209 in the lens tube 501 (at this time, the image converter ball head 208 serves as a rotating fulcrum) can be changed, thereby realizing adjustment of the trajectory and wind direction.

[0036] Further, the eyepiece group 3 includes an eyepiece barrel 303, an eyepiece frame 305 connected with the lens tube 501 through the eyepiece barrel 303, and an eyepiece optical system arranged in the eyepiece frame 305. The eyepiece frame 305 has an inclined end face in the eye direction, and the wall thickness thereof gradually decreases in the direction close to the eye direction, and the thinnest wall thickness is 0.95 mm. A pressing ring for fixing the eyepiece optical system is arranged in the object side of the eyepiece frame 305. The inclined face of the eyepiece frame 305 is designed according to the exit pupil distance, so that the human eye has a thin wall effect when observing, and the field of view is large, clear and comfortable, and the observation experience is optimized.

[0037] Specifically, the eyepiece barrel 303 is fastened between the lens tube 501 and the eyepiece barrel fastening screw 608.

[0038] Further, the zooming hand wheel group 6 includes a zooming hand wheel 601 and a zooming screw 605. The zooming hand wheel 601 is located outside the lens tube 501 and the eyepiece group 3. The lens tube 501 is provided with a zooming opening slot with a certain angle (214° in the embodiment, which is determined by the zooming curve of the optical system), and the zooming tube 206 is provided with a slot. The outer end (threaded end) of the zooming screw 605 is connected with the zooming hand wheel 601, and the inner end (light pole end) is located in the slot of the zooming tube 206 after passing through the zooming opening slot.

[0039] Specifically, when the zooming hand wheel 601 is rotated, the zooming screw 605 rotates in the zooming opening slot, and drives the zooming tube 206 to rotate through the slot of the zooming tube 206, so as to realize zooming. In order to improve the sealing performance of the structure before, the zooming first sealing ring 609 is arranged between the zooming hand wheel 601 and the lens tube 501, and the zooming second sealing ring 304 is arranged between the zooming hand wheel 601 and the eyepiece group 3.

[0040] Further, the zooming hand wheel 601 is provided with a zooming hand wheel limiting screw 607 inside, the zooming hand wheel limiting screw 607 is fixed to the lens tube 501, and the inner wall of the zooming hand wheel 601 is provided with a special-shaped limiting slot, and the outer head of the zooming hand wheel limiting screw 607 is located in the special-shaped limiting slot.

[0041] Specifically, when the zooming hand wheel 601 is installed, first, the zooming hand wheel is sleeved outside the lens tube 501, the zooming hand wheel limiting screw 607 is fixed, then the zooming hand wheel 601 is slid from the object side to the image side, the special-shaped limiting slot avoids the protruding head of the zooming hand wheel limiting screw 607 in the sliding process, and after the zooming hand wheel 601 is slid into place, the zooming hand wheel 601 is rotated, the head of the zooming hand wheel limiting screw 607 is clamped in the special-shaped limiting slot, and then the zooming screw 605 is fixed. After the zooming hand wheel 601 is installed, the zooming hand wheel limiting screw 607 and the zooming screw 605 jointly limit the zooming hand wheel 601, so as to avoid the shaking or gap of the zooming hand wheel 601 during adjustment.

[0042] The application at least has the beneficial effects including: 1) The distance between the glass scale plate and the front and rear mirror groups is greater than or equal to 8 mm, leaving sufficient margin for parallax adjustment, and the process is good.

[0043] 2) The image quality of each magnification is stable without mutation, and the aberration is within the tolerance requirement of the telescope system.

[0044] 3) The scale surface is clear, and the high and low magnification parallax is within 0.5SD.

[0045] 4) The distortion of each waveband at the lowest magnification of 1X is within 3%, the image in the field of view is not deformed, the field of view is small, and the effect of closest naked eye observation under 1X is realized. The scale center point can be quickly switched to a red dot sighting mode after being illuminated.

[0046] 5) The resolution of the application at 10X is as high as 5" or less, and the target details can be clearly presented, which is convenient for target identification, ballistic point observation and accurate long-distance shooting.

[0047] 6) By using ED glass lenses in the objective lens, the chromatic aberration of the system is greatly reduced, and the phenomenon of purple edge existing on the edge of the target at high magnification is avoided.

[0048] 7) By coating each lens with a multilayer broadband anti-reflection film, the reflectivity of each lens is reduced to below 3%, the transmittance of the product is above 85%, and the imaging color is true without visual fatigue.

[0049] 8) The field of view angle at 1X is as high as 22°, the field of view range is wider, and it is convenient for tracking fast-moving targets.

[0050] 9) Under the premise of excluding the parallax caused by human eye recognition, the scale surface can be coincided with the theoretical image surface, and the parallax correction accuracy is improved without upper limit.

[0051] 10) The switch illumination group structure is stable and convenient to use; the brightness levels and the power-off levels are arranged in intervals, and the switch handle can lock the level.

[0052] 11) The magnification handwheel group structure is compact, stable in magnification, and good in adjustment feel. The new-shaped slot and the limiting screw are added to avoid the handwheel shaking or gap during magnification adjustment.

[0053] It should be noted that according to the needs of implementation, each step / component described in the present application can be split into more steps / components, or two or more steps / components or part of the operation of the steps / components can be combined into a new step / component to achieve the purpose of the present application.

[0054] Those skilled in the art can easily understand that the above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An optical system for a 10x magnification white light sight, characterized in that, It includes a first aperture, an objective lens optical system, a reticle, an image-rotating lens optical system, and an eyepiece optical system arranged sequentially from the object side to the image side; The objective optical system includes a first biconvex objective lens, a cemented objective lens, and a meniscus objective lens arranged sequentially from the object side to the image side. The cemented objective lens is formed by cementing together a second biconvex objective lens and a biconcave objective lens arranged sequentially from the object side to the image side; the first aperture coincides with the object side of the first biconvex objective lens; The image-switching lens optical system includes a front field lens meniscus, a first image-switching lens cemented lens, a second image-switching lens cemented lens, and a rear field lens cemented lens, arranged sequentially from the object side to the image side. The first image-switching lens cemented lens can move axially for magnification, and the second image-switching lens cemented lens can move axially for compensation. The first image-switching lens cemented lens is formed by cementing the second image-switching lens meniscus and the first image-switching lens biconvex lens, arranged sequentially from the object side to the image side. The second image-switching lens cemented lens is formed by cementing the third image-switching lens meniscus and the second image-switching lens biconvex lens, arranged sequentially from the object side to the image side. The rear field lens cemented lens is formed by cementing the fourth image-switching lens meniscus, arranged sequentially from the object side to the image side. The eyepiece optical system includes an eyepiece cemented lens and an eyepiece biconvex lens arranged sequentially from the object side to the image side; the eyepiece cemented lens is formed by cementing together an eyepiece biconcave lens and an eyepiece first biconvex lens arranged sequentially from the object side to the image side. The image-side focal plane of the objective lens optical system is the first image plane, which is located between the objective lens optical system and the image-rotating lens optical system. The reticle is set at the first image plane. The object-side focal plane of the eyepiece optical system is the second image plane, which is located between the image-rotating lens optical system and the eyepiece optical system; the positions of the first and second image planes remain unchanged during zooming.

2. The optical system of the 10x magnification white light sight according to claim 1, characterized in that, Optical system meets ; The focal length of the objective lens optical system. This refers to the focal length of the eyepiece optical system.

3. The optical system of the 10x magnification white light sight according to claim 1, characterized in that, The air gap between the first biconvex lens and the cemented lens of the objective lens ranges from 10.524 to 15.286 mm. The air gap between the cemented objective lens and the meniscus objective lens ranges from 30.110 to 35.862 mm. The air gap between the meniscus objective lens and the reticle ranges from 8.241 to 13.389 mm. The air gap between the reticle and the front field lens meniscus ranges from 10.200 to 14.526 mm. The air gap between the cemented rear mirror and the second image plane ranges from 14.226 to 20.459 mm. The air gap between the second image plane and the eyepiece cemented lens ranges from 24.338 to 26.118 mm. The air gap between the cemented eyepiece and the biconvex eyepiece lens ranges from 0.399 to 0.554 mm.

4. The optical system of the 10x white light sight according to claim 1 or 3, characterized in that, The variable air gap between the front field lens (meniscus) and the image-rotating lens (first cemented lens) is 3–60.784 mm. The variable air gap between the first cemented lens and the second cemented lens of the image-switching lens is 0.5–30.9 mm; The variable air gap between the second cemented lens of the image-switching lens and the cemented lens of the rear field lens is 59.305–4.5 mm.

5. A 10x magnification white light sight, comprising the optical system of claim 1, characterized in that, It includes a microscope tube, a zoom lever assembly, and an objective lens assembly, a reticle assembly, an image-rotating lens assembly, and an eyepiece assembly arranged sequentially from the object side to the image side; The objective lens group includes a first aperture stop and an objective lens optical system, the reticle group includes a reticle, the image-rotating lens group includes an image-rotating lens optical system, and the eyepiece group includes an eyepiece optical system. The objective lens group, reticle group, and image-rotating lens group are located inside the microscope tube. The eyepiece group is connected to the end of the microscope tube. The zoom handwheel group is connected to the outer periphery of the microscope tube and is connected to the first and second image-rotating lenses in a driving connection.

6. The 10x magnification white light sight according to claim 5, characterized in that, The reticle assembly includes a reticle frame, which is connected to one end of the image-rotating lens assembly. The reticle is set inside the reticle frame, and light-emitting elements for illuminating the reticle are arranged around the reticle frame.

7. The 10x magnification white light sight according to claim 6, characterized in that, The illumination brightness of the light source is adjustable; the lens tube is equipped with a switch illumination group, which includes a power supply mechanism and a gear switching mechanism. The power supply mechanism includes a battery, which is electrically connected to the gear switching mechanism. When the gear switching mechanism is operated, the battery, the light source and resistors of different resistance values ​​form a circuit, or the circuit with the light source is broken.

8. The 10x magnification white light sight according to claim 5, characterized in that, The image-switching lens assembly includes an image-switching lens tube and a zoom tube, with the image-switching lens tube housed within the zoom tube. The front field lens, a meniscus lens, is fixed within the image-switching lens tube. The first and second cemented image-switching lenses are fixed within the zoom lens frame and the compensation lens frame, respectively. The zoom lens frame and the compensation lens frame are slidably connected to the image-switching lens and are drivenly connected to the zoom tube. The zoom tube is drivenly connected to the zoom handwheel assembly. The rear field lens, a cemented lens, is fixed within the rear field lens frame, which is connected to the image-side end of the image-switching lens tube. A second aperture stop is connected to the image-side end of the rear field lens frame.

9. The 10x magnification white light sight according to claim 6, characterized in that, An image-rotating lens tube is provided on the outside of an image-rotating ball head, and an image-rotating lens tube is provided on the object-side end with a stepped surface with an increased outer diameter. The zoom tube is located between the image-rotating ball head and the stepped surface. The lens body is provided with an adjusting screw assembly, which includes a pair of vertically arranged adjusting screw mechanisms that are connected to the image-rotating lens assembly in a transmission manner.

10. The 10x magnification white light sight according to claim 5, characterized in that, The zoom handwheel assembly includes a zoom handwheel and a zoom screw; the zoom handwheel is located outside the scope tube and eyepiece assembly; the scope tube is provided with a zoom opening slot at a certain angle, the zoom tube is provided with a slot, the outer end of the zoom screw is connected to the zoom handwheel, and the inner end passes through the zoom opening slot and is located in the slot of the zoom tube. A zoom handwheel limit screw is provided on the inner side of the zoom handwheel. The zoom handwheel limit screw is fixed to the lens tube. An irregularly shaped limit groove is provided on the inner wall of the zoom handwheel. The outer head of the zoom handwheel limit screw is located in the irregularly shaped limit groove.

Images