Sighting device

Abstract

A sighting device includes a housing, an objective lens unit, an eyepiece lens unit, an erecting unit, an adjusting unit, a light emitting unit and a light receiving unit. The housing includes a radial direction and a second central axis. The objective lens unit is disposed at one end of the housing. The eyepiece lens unit is disposed at the other end of the housing relative to the objective lens unit. The erecting unit is disposed between the objective lens unit and the eyepiece lens unit. The adjusting unit is movably disposed on the housing and abuts the erecting unit along the radial direction to adjust the erecting unit. The light emitting unit is disposed on the erecting unit and includes a light source to emit a light beam reflected by an object. The light receiving unit is disposed on the erecting unit and includes a light sensor to receive the light beam reflected by the object. A distance between any point on a cross section of an outer surface of the housing and the second central axis is almost equal.

Description

Technical Field

[0001] This invention relates to an aiming device, and more particularly to an aiming device having the external dimensions of a general aiming device and simultaneously having a rangefinding function. Background Technology

[0002] Standard sights do not have rangefinding capabilities. Sights with rangefinding capabilities usually have different shapes depending on their design and require special clamps to be mounted on the firearm, as they cannot be mounted with ordinary clamps. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a aiming device that not only has a rangefinding function, but also has the appearance and size of a general aiming device, and can be mounted on a gun using a general clamp.

[0004] The technical solution adopted by the present invention to solve its technical problem is to provide an embodiment of an aiming device including a housing, an objective lens unit, an eyepiece unit, an erecting unit, an adjustment unit, a light emitting unit, and a light receiving unit. The housing includes a radial direction and a second central axis. The objective lens unit is disposed at one end of the housing. The eyepiece unit is disposed at the other end of the housing relative to the objective lens unit. The erecting unit is disposed between the objective lens unit and the eyepiece unit. The adjustment unit is movably disposed on the housing and abuts against the erecting unit along the radial direction to adjust the erecting unit. The light emitting unit is disposed on the erecting unit and includes a light source to emit a light beam, which is reflected by an object. The light receiving unit is disposed on the erecting unit and includes a light sensor to receive the light beam reflected by the object. Any point on the cross-section of the outer surface of the housing is approximately equidistant from the second central axis.

[0005] In another embodiment, the housing includes a first clamping portion and a second clamping portion, which are respectively located on both sides of the adjustment unit where the housing is disposed; both the first clamping portion and the second clamping portion are cylindrical, and the ratio of the length of the first clamping portion to the length of the second clamping portion is 0.5 to 2; any point on the cross section of the inner surface of the housing is almost equal to the distance from the second central axis.

[0006] In another embodiment, the housing includes a first clamping portion; the uprighting unit includes a first central axis; the light emitting unit further includes a first end face facing the objective lens unit, and the point on the first end face that is furthest from the first central axis is a first reference point; the light receiving unit further includes a second end face facing the objective lens unit, the second end face including an outer edge, and the midpoint of the outer edge being a second reference point; the aiming device satisfies at least one of the following conditions: 6≦D5 / g3≦13; 8≦D6 / g2≦14; where D5 is the distance from the second reference point to the first central axis, g3 is the minimum distance between the light receiving unit and the first clamping portion, D6 is the distance from the first reference point to the first central axis, and g2 is the minimum distance between the light emitting unit and the first clamping portion.

[0007] In another embodiment, the housing includes a first clamping portion; the uprighting unit includes a first central axis; the light emitting unit further includes a first end face facing the objective lens unit, and the point on the first end face that is furthest from the first central axis is a first reference point; the light receiving unit further includes a second end face facing the objective lens unit, the second end face including an outer edge, and the midpoint of the outer edge being a second reference point; the first clamping portion is cylindrical and has an inner diameter and an outer diameter; the aiming device satisfies at least one of the following conditions: 4%≦∣(D5-D6) / d1∣≦6%; 4%≦∣(D5-D6) / d2∣≦6%, where D5 is the distance from the second reference point to the first central axis, D6 is the distance from the first reference point to the first central axis, d1 is the inner diameter of the first clamping portion, and d2 is the outer diameter of the first clamping portion.

[0008] In another embodiment, the upright unit has a first central axis, and when viewed along the direction of the first central axis, the light source and the light sensor are either coincident or have an angle of 180 degrees relative to the first central axis. 。 .

[0009] In another embodiment, the upright unit includes a first prism and a second prism, the first prism being closer to the objective lens unit than the second prism; the first prism includes a first side facing the eyepiece unit and a second side facing the objective lens unit; the second prism includes a third side facing the eyepiece unit and a fourth side facing the objective lens unit; the light emitting unit includes a first end face facing the objective lens unit; the light receiving unit includes a second end face facing the objective lens unit; the aiming device satisfies the condition 0.8≦∣(D1-D2) / (D3-D4)∣≦3, where D1 is the distance between the first end face and the third side face, D2 is the distance between the second end face and the third side face, D3 is the distance between the first side face and the third side face, and D4 is the distance between the second side face and the third side face.

[0010] In another embodiment, the uprighting unit includes a first central axis, a first prism, and a second prism, the first prism being closer to the objective lens unit than the second prism; the first prism includes a first side facing the eyepiece unit and a second side facing the objective lens unit; the second prism includes a third side facing the eyepiece unit and a fourth side facing the objective lens unit; the light emitting unit includes a first end face facing the objective lens unit; the light receiving unit includes a second end face facing the objective lens unit; the first central axis intersects the second side face at a first intersection point and intersects the third side face at a second intersection point; the point on the first end face furthest from the first central axis is a first reference point; the second end face includes an outer edge and an inner edge, the outer edge being farther from the uprighting unit than the inner edge, and the midpoint of the outer edge being a second reference point; the aiming device satisfies the condition 0.2≦∣(A1-A2) / (A3-A4)∣≦0.6, where A1 is the angle between the line connecting the second reference point and the second intersection point and the first central axis, A2 is the angle between the line connecting the first reference point and the second intersection point and the first central axis, A3 is the angle between the line connecting the second reference point and the first intersection point and the first central axis, and A4 is the angle between the line connecting the first reference point and the first intersection point and the first central axis.

[0011] In another embodiment, the upright unit includes a first prism, which is closer to the objective lens unit than the light emitting unit. The housing includes a first clamping portion, which is cylindrical and has an inner diameter and an outer diameter. The aiming device satisfies at least one of the following conditions: 3% ≦ g1 / d1 ≦ 6%; 3% ≦ g1 / d2 ≦ 6%, where g1 is the minimum distance between the first prism and the first clamping portion, d1 is the inner diameter of the first clamping portion, and d2 is the outer diameter of the first clamping portion.

[0012] In another embodiment, the housing includes a first clamping portion, which is cylindrical and has an inner diameter and an outer diameter. The aiming device satisfies at least one of the following conditions: 2%≦g2 / d1≦5%; 2%≦g2 / d2≦5%, where g2 is the minimum distance between the light emitting unit and the first clamping portion, d1 is the inner diameter of the first clamping portion, and d2 is the outer diameter of the first clamping portion.

[0013] In another embodiment, the housing includes a first clamping portion, which is cylindrical and has an inner diameter and an outer diameter. The aiming device satisfies at least one of the following conditions: 2%≦g3 / d1≦6%; 2%≦g3 / d2≦5%, where g3 is the minimum distance between the light receiving unit and the first clamping portion, d1 is the inner diameter of the first clamping portion, and d2 is the outer diameter of the first clamping portion.

[0014] The aiming device of the present invention has the following advantages: it not only has a rangefinding function, but also has the appearance and size of a general aiming device, and can be mounted on a gun using a general clamp. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the aiming device according to the present invention.

[0016] Figure 2 This is a partial cross-sectional view of the upright unit according to the present invention.

[0017] Figure 3 yes Figure 2 Plan view of the upright unit.

[0018] Figure 4A yes Figure 1 A cross-sectional view of the aiming device along IVA-IVA.

[0019] Figure 4B yes Figure 1 A cross-sectional view of the aiming device along IVB-IVB.

[0020] Figure 4C yes Figure 1 A cross-sectional view of the aiming device along IVC-IVC. Detailed Implementation

[0021] Please see Figure 1 , Figure 1 This is a schematic diagram of an aiming device according to the present invention. The aiming device 10 of the present invention includes a housing 110, an objective lens unit 120 disposed at one end of the housing 110, and an eyepiece unit 130 disposed at the other end of the housing 110 opposite to the objective lens unit 120. An erecting unit 140 is disposed between the objective lens unit 120 and the eyepiece unit 130. The end of the erecting unit 140 near the objective lens unit 120 is a free end, while the other end near the eyepiece unit 130 is connected to a movable joint (not shown) inside the housing 110, so that the erecting unit 140 can change its attitude relative to the connecting end when subjected to external force. An adjustment unit 150 is further disposed on the housing 110, and the adjustment unit 150 abuts against the erecting unit 140 along the radial direction of the housing 110. In operation, when the user aims the aiming device 10 at an object (not shown), the image of the object can reach the user's eye through the objective lens unit 120, the erecting unit 140, and the eyepiece unit 130, so as to aim at the object. Next, the user can use the adjustment unit 150 to adjust the attitude of the upright unit 140 for impact correction.

[0022] In addition to its aiming function, the aiming device 10 of the present invention also has a ranging function. To achieve this, the aiming device 10 further includes a light emitting unit 160 and a light receiving unit 170, both of which are connected to the upright unit 140. Please also refer to... Figure 2 , Figure 2 This is a partial cross-sectional view of the upright unit according to the present invention. The light emitting unit 160 includes a light source 161, such as a laser diode, mounted on a circuit board 163 using surface mount technology. The light receiving unit 170 includes a light sensor 171, such as an avalanche photodiode, mounted on a circuit board 173 using surface mount technology. Due to the use of surface mount technology, the overall volume of the light emitting unit 160 and the light receiving unit 170 can be significantly reduced and housed within the housing 110. This allows the aiming device 10 to have the appearance and dimensions of a typical sight, eliminating the need for a special design or enlarged size for mounting the light emitting unit 160 and the light receiving unit 170. Furthermore, it can be mounted on a firearm using a standard sight clamp. While both the light emitting unit 160 and the light receiving unit 170 are surface mount components, it is understood that if only one of them is a surface mount component, it also falls within the scope of this invention.

[0023] The aiming device 10 of the present invention further includes a first prism 141 and a second prism 142, which are disposed in the upright unit 140, wherein the first prism 141 is closer to the objective lens unit 120 than the second prism 142. During distance measurement, the light source 161 emits a light beam, which passes through the first prism 141 and the objective lens unit 120 to reach the object (not shown). The light beam is reflected back to the aiming device 10 by the object, and then passes through the objective lens unit 120, the first prism 141, and the second prism 142 before being deflected to reach the light sensor 171. By utilizing the time difference between the emission and reception of the light beam, the distance to the object can be calculated for user reference.

[0024] The following further describes the structural details of the aiming device 10 of the present invention:

[0025] Please refer to the following: Figure 1 The housing 110 includes a first clamping portion 111 and a second clamping portion 113, which are located on both sides of the adjustment unit 150 where the housing is positioned. Both the first clamping portion 111 and the second clamping portion 113 are generally cylindrical, and the length L1 of the first clamping portion 111 and the length L2 of the second clamping portion 113 are at least 30 mm, with a ratio of 0.5 or 2, where 0.5 to 2 falls within the scope of this invention. Through the design of the first clamping portion 111 and the second clamping portion 113, the aiming device 10 of this invention can be mounted on a firearm using the clamping components of a conventional sight. Furthermore, the adjustment unit 150 is positioned as close as possible to the user for convenient operation.

[0026] The upright unit 140 has a first central axis C1, and the housing 110 has a second central axis C2. As mentioned above, the user can use the adjustment unit 150 to adjust the attitude of the upright unit 140 for impact correction. Before adjustment, the angle between the first central axis C1 and the second central axis C2 can be 0. ° However, the angle between the first central axis C1 and the second central axis C2 will change during adjustment. Specifically, when viewed along the direction of the second central axis C2, the maximum value of the angle between the first central axis C1 and the second central axis C2 is at the top (0). ° ), below (180) ° ), left (270) ° ), right (90) ° The position can reach 0.48. ° However, considering a tolerance of ±5%, the angle is 0.456. 。 ~0.504 。 All areas within the scope of this invention are covered, while the upper right (45) ° ), lower right (135) ° ), upper left (315) ° ), lower left (225 ° The maximum included angle at this location can reach 0.68. ° However, considering a tolerance of ±5%, the angle is 0.646. ° ~0.714 ° All of the above fall within the scope of this invention. The housing 110 has an inner and an outer surface, wherein the distance between the second central axis C2 and any point on the cross section of the outer surface of the housing 110 is almost equal, or the distance between the second central axis C2 and any point on the cross section of the inner surface of the housing 110 is almost equal, so as to correspond to the first clamping part 111 and the second clamping part 113 being generally cylindrical, wherein the first clamping part 111 and the second clamping part 113 have almost equal inner and outer diameters, wherein the aforementioned almost equal, taking into account a tolerance of ± 5%, can fall within the range of 0.95% to 1.05%.

[0027] Furthermore, when the user adjusts the posture of the uprighting unit 140 using the adjustment unit 150, the minimum gap between the uprighting unit 140 and the inner wall of the housing 110 is at the top (0). ° ), below (180) ° ), left (270) ° ), right (90) ° The gap can be approximately 1mm, and considering a tolerance of ±5%, a minimum gap within the range of 0.95mm to 1.05mm falls within the scope of this invention. The minimum gap is located at the upper right (45). ° ), lower right (135) ° ), upper left (315)° ), lower left (225 ° The position can be approximately 1.42mm, and considering a tolerance of ±5%, the minimum value is within the range of 1.349mm to 1.491mm, which is within the scope of this invention.

[0028] When viewed along the first central axis C1, the angle between the light source 161 and the light sensor 171 relative to the first central axis C1 is 180°. ° Because the light source 161 and the light sensor 171 are not located adjacent to each other, it is possible to avoid the light sensor 171 receiving light leakage from the light source 161 and thus not affecting the ranging result. However, the invention is not limited to this. It is understood that the positions of the light source 161 and / or the light sensor 171 can be changed so that their positions coincide when viewed along the first central axis C1 (i.e., 0). 。 This also falls within the scope of the present invention.

[0029] Please also refer to Figure 2 as well as Figure 3 , Figure 3 yes Figure 2 A plan view of the upright unit. The first prism 141 includes a first side surface 1411 facing the eyepiece unit 130 and a second side surface 1412 facing the objective lens unit 120. The second prism 142 includes a third side surface 1423 facing the eyepiece unit 130 and a fourth side surface 1424 facing the objective lens unit 120. The light emitting unit 160 includes a first end face 165 facing the objective lens unit 120. The light receiving unit 170 includes a second end face 175 facing the objective lens unit 120. In this invention, the distance D1 between the first end face 165 and the third side face 1423 is 24.8mm~31.3mm, and considering a tolerance of ±5%, the distance D1 can be 23.56mm~32.865mm. The distance D2 between the second end face 175 and the third side face 1423 is 13.1mm~17.5mm, and considering a tolerance of ±5%, the distance D2 can be 12.445mm~18.375mm. The distance D3 between the first side face 1411 and the third side face 1423 is 34.5mm~38.5mm, and considering a tolerance of ±5%, the distance D3 can be 32.775mm~40.425mm. The distance D4 between the second side face 1412 and the third side face 1423 is 39.5mm~45.5mm, and considering a tolerance of ±5%, the distance D1 can be 24.8mm~31.3mm. Considering 5%, the distance to D4 could be 37.525mm~47.775mm.

[0030] The first central axis C1 intersects the second side surface 1412 at the first intersection point S1, and intersects the third side surface at the second intersection point S2. The point on the first end face 165 that is farthest from the first central axis C1 is the first reference point P1. The distance from the first reference point P1 to the first central axis C1 is D6. In this invention, the distance D6 can be 14.2 mm. Considering a tolerance of ±5%, a distance D6 within the range of 13.49 mm to 14.91 mm is within the scope of this invention. The second end face 175 includes an outer edge 1751 and an inner edge 1753. The outer edge 1751 is farther from the upright unit 140 than the inner edge 1753. The midpoint of the outer edge 1751 is the second reference point P2. The distance from the second reference point P2 to the first central axis C1 is D5. In this invention, the distance D5 can be 12.4mm to 12.5mm. Considering a tolerance of ±5%, a distance D5 within the range of 11.78mm to 13.125mm is within the scope of this invention. The angle A1 between the line connecting the second reference point P2 and the second intersection point S2 and the first central axis C1 is 35°. ° ~55 ° However, considering a tolerance of ±5%, the angle is 33.25 degrees. ° ~57.75 ° All areas within the scope of this invention; the angle A2 between the line connecting the first reference point P1 and the second intersection point S2 and the first central axis C1 is 24°. ° ~35 ° However, considering a tolerance of ±5%, the angle is 22.8 degrees. ° ~36.75 ° All areas within the scope of this invention; the angle A3 between the line connecting the second reference point P2 and the first intersection point S1 and the first central axis C1 is 24°. ° ~29 ° However, considering a tolerance of ±5%, the angle is 22.8 degrees. ° ~30.45 ° All areas within the scope of this invention; the angle A4 between the line connecting the first reference point P1 and the first intersection point S1 and the first central axis C1 is approximately 60°. ° However, considering a tolerance of ±5%, the angle is 57 degrees. ° ~63 ° All items within the scope of this invention fall within its scope.

[0031] Please see Figure 4A , Figure 4A yes Figure 1The aiming device is shown in a cross-sectional view along IVA-IVA. The figure shows the third intersection point S3 of the first prism 141 and its circumscribed circle K1. The distance between this third intersection point S3 and the housing 110 is the minimum distance between the first prism 141 and the first clamping portion 111 of the housing 110, which is equal to the distance indicated by the symbol g1 in the figure. The distance between the first prism 141 and the first clamping portion 111 in this invention is at least 1.38~1.88 mm, and considering a tolerance of ±5%, the distance g1 can be 1.311 mm~1.974 mm. The inner diameter d1 of the first clamping portion 111 of the housing 110 in this invention can be 31.5 mm, and considering a tolerance of ±5%, the inner diameter d1 can be 29.925 mm~33.075 mm. The outer diameter d2 of the first clamping part 111 of the housing 110 of the present invention can be 34 mm, while considering a tolerance of ± 5%, the outer diameter d2 can be 32.3 mm to 35.7 mm.

[0032] Please see Figure 4B , Figure 4B yes Figure 1 The aiming device is shown in a cross-sectional view along IVB-IVB. The figure shows the fourth intersection point S4 of the light emitting unit 160 and its circumscribed circle K2. The distance g2 between the fourth intersection point S4 and the housing 110 is the minimum distance between the light emitting unit 160 and the first clamping part 111. The distance between the light emitting unit 160 and the first clamping part 111 in this invention is at least 1.05~1.55mm, and considering a tolerance of ±5%, the distance g2 can be 0.9975mm~1.6275mm.

[0033] Please see Figure 4C , Figure 4C yes Figure 1 The aiming device is shown in a cross-sectional view along IVC-IVC. The figure shows a fifth intersection point S5 between the light receiving unit 170 and its circumscribed circle K3. The distance between this fifth intersection point S5 and the housing 110 is the minimum distance between the light receiving unit 170 and the first clamping part 111, which is equal to the distance indicated by the symbol g3 in the figure. The distance between the light receiving unit 170 and the first clamping part 111 in this invention is at least 1.02~1.63 mm, and considering a tolerance of ±5%, the distance g3 can be 0.969 mm~1.7115 mm.

[0034] In this embodiment, the aiming device 10 further satisfies the following condition:

[0035] 6≦D5 / g3≦13 (1)

[0036] 8≦D6 / g2≦14 (2)

[0037] 4%≦∣(D5-D6) / d1∣≦6% (3)

[0038] 4%≦∣(D5-D6) / d2∣≦6%(4)

[0039] 2%≦g3 / d1≦6% (5)

[0040] 2%≦g3 / d2≦5% (6)

[0041] 2%≦g2 / d1≦5% (7)

[0042] 2%≦g2 / d2≦5% (8)

[0043] 3%≦g1 / d1≦6% (9)

[0044] 3%≦g1 / d2≦6% (10)

[0045] 0.2≦∣(A1-A2) / (A3-A4)∣≦0.6 (11)

[0046] 0.8≦∣(D1-D2) / (D3-D4)∣≦3 (12)

[0047] The symbols A1~A4 and D1~D6 above are indicated in Figure 3 In the diagram, the symbols d1~d2 and g1~g3 are indicated in... Figures 4A-4C The meanings of the symbols have been described above and will not be repeated here. It can be understood that if the aiming device only satisfies some of the conditions, it should also fall within the scope of this invention.

[0048] Through the above design, the aiming device of the present invention not only has a rangefinding function, but also has the external dimensions of a general-purpose sight, allowing it to be mounted on a firearm using a standard clamp without the need for a specially developed clamp. Furthermore, the adjustment unit of the aiming device of the present invention is positioned as close as possible to the user, facilitating user operation.

Claims

1. An aiming device, characterized in that, include: The housing includes radial and second central axes; The objective lens unit is located at one end of the housing; The eyepiece unit is disposed at the other end of the housing relative to the objective lens unit; An upright unit is disposed between the objective lens unit and the eyepiece unit; An adjustment unit is movably disposed on the housing and abuts against the upright unit along the radial direction to adjust the upright unit; A light emitting unit, disposed on the upright unit, includes a light source to emit a light beam, which is reflected by an object; A light receiving unit, disposed on the upright unit, includes a light sensor that receives a light beam reflected by the object; Wherein, any point on the cross section of the outer surface of the housing is almost equal to the distance from the second central axis, and the housing includes a first clamping part and a second clamping part, which are respectively arranged on both sides of the adjustment unit where the housing is installed; Both the first clamping part and the second clamping part are cylindrical and have almost equal inner diameters, and both have almost equal outer diameters. The aiming device must satisfy at least one of the following conditions: The upright unit includes a first central axis; the light emitting unit further includes a first end face facing the objective lens unit, with the point on the first end face furthest from the first central axis serving as a first reference point; the light receiving unit further includes a second end face facing the objective lens unit, the second end face including an outer edge, the midpoint of which serves as a second reference point; the aiming device satisfies: 6≦D5 / g3≦13; where D5 is the distance from the second reference point to the first central axis, and g3 is the minimum distance between the light receiving unit and the first clamping part; or The upright unit includes a first central axis; the light emitting unit further includes a first end face facing the objective lens unit, and the point on the first end face that is furthest from the first central axis is a first reference point; the aiming device satisfies: 8≦D6 / g2≦14; where D6 is the distance from the first reference point to the first central axis, and g2 is the minimum distance between the light emitting unit and the first clamping part; or The upright unit includes a first central axis; the light emitting unit further includes a first end face facing the objective lens unit, with the point on the first end face furthest from the first central axis serving as a first reference point; the light receiving unit further includes a second end face facing the objective lens unit, the second end face including an outer edge, the midpoint of which serves as a second reference point; the aiming device satisfies: 4% ≦ |(D5-D6) / d1 ∣ ≦ 6%; where D5 is the distance from the second reference point to the first central axis, D6 is the distance from the first reference point to the first central axis, and d1 is the inner diameter of the first clamping portion; or The upright unit includes a first central axis; the light emitting unit further includes a first end face facing the objective lens unit, and the point on the first end face farthest from the first central axis is a first reference point; wherein, the light receiving unit further includes a second end face facing the objective lens unit, the second end face including an outer edge, the midpoint of the outer edge being a second reference point; the aiming device satisfies: 4% ≦ |(D5-D6) / d2 ∣ ≦ 6%; where D5 is the distance from the second reference point to the first central axis, where D6 is the distance from the first reference point to the first central axis, and d2 is the outer diameter of the first clamping part; or The upright unit includes a first central axis; the light emitting unit further includes a first end face facing the objective lens unit; the upright unit includes a first prism and a second prism, the first prism being closer to the objective lens unit than the second prism; the first prism includes a first side face facing the eyepiece unit and a second side face facing the objective lens unit; the second prism includes a third side face facing the eyepiece unit and a fourth side face facing the objective lens unit; the aiming device satisfies: 0.8≦∣(D1-D2) / (D3-D4)∣≦3; where D1 is the distance between the first end face and the third side face, D2 is the distance between the second end face and the third side face, D3 is the distance between the first side face and the third side face, and D4 is the distance between the second side face and the third side face; or The upright unit includes a first central axis; the light emitting unit further includes a first end face facing the objective lens unit, with the point on the first end face furthest from the first central axis serving as a first reference point; the light receiving unit further includes a second end face facing the objective lens unit, the second end face including an outer edge, the midpoint of which serves as a second reference point; the upright unit includes a first prism and a second prism, the first prism being closer to the objective lens unit than the second prism; the first prism includes a first side facing the eyepiece unit and a second side facing the objective lens unit; the second prism includes a third side facing the eyepiece unit and a fourth side facing... The objective lens unit; wherein the first central axis intersects the second side surface at a first intersection point, and the first central axis intersects the third side surface at a second intersection point; the aiming device satisfies: 0.2≦∣(A1-A2) / (A3-A4)∣≦0.6; A1 is the angle between the line connecting the second reference point and the second intersection point and the first central axis, A2 is the angle between the line connecting the first reference point and the second intersection point and the first central axis, A3 is the angle between the line connecting the second reference point and the first intersection point and the first central axis, and A4 is the angle between the line connecting the first reference point and the first intersection point and the first central axis; or The upright unit includes a first prism and a second prism, with the first prism being closer to the objective lens unit than the second prism; the aiming device satisfies: 3% ≤ g1 / d1 ≤ 6%; g1 is the minimum distance between the first prism and the first clamping part, and d1 is the inner diameter of the first clamping part, or The upright unit includes a first prism and a second prism, with the first prism being closer to the objective lens unit than the second prism; the aiming device satisfies: 3% ≤ g1 / d2 ≤ 6%; g1 is the minimum distance between the first prism and the first clamping part, and d2 is the outer diameter of the first clamping part; or The aiming device satisfies: 2% ≤ g2 / d1 ≤ 5%; g2 is the minimum distance between the light emitting unit and the first clamping part, and d1 is the inner diameter of the first clamping part; or The aiming device satisfies: 2% ≤ g2 / d2 ≤ 5%; g2 is the minimum distance between the light emitting unit and the first clamping part, and d2 is the outer diameter of the first clamping part; or The aiming device satisfies: 2% ≤ g3 / d1 ≤ 6%; g3 is the minimum distance between the light receiving unit and the first clamping part; d1 is the inner diameter of the first clamping part; or The aiming device satisfies: 2% ≤ g3 / d1 ≤ 6%; g3 is the minimum distance between the light receiving unit and the first clamping part; d2 is the outer diameter of the first clamping part; or The aiming device satisfies the following conditions: 2%≦g3 / d2≦5%, where g3 is the minimum distance between the light receiving unit and the first clamping part, and d2 is the outer diameter of the first clamping part.

2. The aiming device as described in claim 1, characterized in that: The ratio of the length of the first clamping part to the length of the second clamping part is 0.5 to 2.

3. The aiming device as described in claim 1, characterized in that, When viewed along the first central axis, the light source and the light sensor are either aligned or form an angle of 180 degrees relative to the first central axis. 。 .

4. The aiming device as claimed in claim 1, characterized in that, The second end face includes an outer edge and an inner edge, the outer edge being farther from the upright unit than the inner edge.

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